WO2006068099A1 - ゴム組成物、プラズマ処理装置用シール材 - Google Patents
ゴム組成物、プラズマ処理装置用シール材 Download PDFInfo
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- WO2006068099A1 WO2006068099A1 PCT/JP2005/023285 JP2005023285W WO2006068099A1 WO 2006068099 A1 WO2006068099 A1 WO 2006068099A1 JP 2005023285 W JP2005023285 W JP 2005023285W WO 2006068099 A1 WO2006068099 A1 WO 2006068099A1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/12—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/0025—Crosslinking or vulcanising agents; including accelerators
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/14—Peroxides
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/54—Silicon-containing compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2666/00—Composition of polymers characterized by a further compound in the blend, being organic macromolecular compounds, natural resins, waxes or and bituminous materials, non-macromolecular organic substances, inorganic substances or characterized by their function in the composition
- C08L2666/02—Organic macromolecular compounds, natural resins, waxes or and bituminous materials
- C08L2666/14—Macromolecular compounds according to C08L59/00 - C08L87/00; Derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L71/00—Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
- C08L71/02—Polyalkylene oxides
Definitions
- the present invention relates to a reactive rubber composition before curing and a sealing material for a plasma processing apparatus, and more specifically, even when used continuously at a high temperature for a long time, particularly in a semiconductor manufacturing process.
- Uncured rubber composition before curing which can provide a sealing material for a plasma processing apparatus that can be produced at low cost without the problem of particle sticking that is difficult to stick to a mating member And a sealing material for a plasma processing apparatus formed by vulcanization molding of the composition.
- FFKM perfluoroelastomer
- FKM fluoro rubber
- FKM fluoropolymer
- FFKM perfluoroelastomer
- FFKM fluorosilicone rubber having plasma resistance
- a rubber material for a plasma-resistant processing apparatus obtained by vulcanizing and molding a blend of fluororubber and fluorosilicone rubber having high plasma resistance with a peroxide cross-linking agent or the like (Japanese Patent Laid-Open No. 2001-348462)
- Patent Document 1 Japanese Patent Laid-Open No. 2001-348462
- the fluorosilicone materials used (KE, FE series, etc.) contain a large amount of filler, which is etched and filled with plasma. If the material contaminates the semiconductor manufacturing process as particles, there is a problem, and a rubber composition containing a filler in an amount of about 30% by weight is peroxide-crosslinked to further improve the plasma resistance.
- rubber materials for plasma-resistant processing equipment vulcanized and molded with an agent have a problem of generation of filler-derived particles when used for semiconductors.
- JP 2003-183402 A includes a curable composition described in JP 11-116684 A or JP 11-116685 A (Patent Documents 3 to 4).
- a molded product obtained by vulcanization molding as it is is disclosed, and more specifically, in JP-A-2003-183402 (Patent Document 2), a bivalent perfluoropolyether or a bivalent perfluoropolyether is added to the main chain.
- a plasma-resistant fluoroelastomer seal material cross-linked by an addition-reactive polymer is disclosed, and the seal material is oxygen-resistant plasma resistant. And non-adhesiveness to quartz.
- a raw material rubber which is a fluorine-based elastomer, a specific cross-linking polymer and catalyst (baroxide type), and a co-crosslinking agent are kneaded with an open roll to obtain a compound, and then a primary and secondary cure are performed to obtain a molded product. It is described that it was obtained (Examples 1 to 5, Comparative Examples 1 to 10).
- the Patent Document 2 includes conventional fluorine rubber, perfluoroelastomer, silicone rubber, EPDM, and the like. However, these are merely examples for comparison, and these are used together with the raw rubber represented by the above formula (1) to improve the adhesiveness of the resulting molded product. There is no thought at all.
- Patent Document 2 has a normal force (hardness, tension, elongation, 100M) and a compression force that is good in terms of compression set, and has plasma resistance (radical resistance). There is room for further improvement in terms of inferiority and adhesion (see “Comparative Example 2” in Table 1 of the present specification).
- Patent Document 5 discloses that a hydroxyl group-modified silicone having a specific hydroxyl group-containing group is brought into contact with a fluororubber molded article, and the fluororubber molded article after contact is heated.
- a fluororubber molded article having a surface layer having a hydroxyl group-modified silicone force and having both plasma resistance and non-adhesiveness can be obtained, and the fluororubber molded product is a fluorine having a surface layer having a silicone force.
- Patent Document 1 Japanese Patent Laid-Open No. 2001-348462
- Patent Document 2 Japanese Patent Laid-Open No. 2003-183402
- Patent Document 3 Japanese Patent Laid-Open No. 11-116684
- Patent Document 4 JP-A-11-116685
- Patent Document 5 JP 2002-220486 A
- the present invention is intended to solve the problems associated with the prior art as described above, and even if it is used continuously at a high temperature for a long time in a semiconductor manufacturing process or the like, it becomes sticky with a counterpart member.
- -A vulcanizable and reactive rubber composition prior to curing so that a sealing material for a plasma processing apparatus can be obtained at a low cost without causing the problem of particle generation that hardly sticks, and the composition
- An object of the present invention is to provide a plasma processing apparatus sealing material obtained by vulcanization molding.
- the rubber composition according to the present invention comprises:
- (d) It is characterized by containing a vulcanizing agent (d-1) and, if necessary, a co-crosslinking agent (d-2).
- the reactive fluorine-based compound (b) and the reactive organosilicon compound (c) are in a liquid state and can react and gel in the presence of a catalyst. It needs to be a thing.
- the crosslinkable fluororubber (a) is (i) a vinylidene fluoride crosslinkable fluororubber (FKM) alone, or (Mouth) In addition to the crosslinkable FKM, it may contain a small amount of crosslinkable perfluorinated rubber (FFKM).
- FKM vinylidene fluoride crosslinkable fluororubber
- FFKM crosslinkable perfluorinated rubber
- the total amount of the reactive fluorine-based compound (b) and the reactive organosilicon compound (c) is 1 to 10 parts by weight with respect to 100 parts by weight of the crosslinkable fluororubber (a).
- the vulcanizing agent (d-1) is included in an amount of 0.5 to 2.5 parts by weight and the co-crosslinking agent (d-2) in an amount of 3 to 6 parts by weight.
- the sealing material for a plasma processing apparatus is obtained by performing primary vulcanization molding of the unvulcanized rubber composition described above, and then 150 to 300 ° C, preferably 200 ° C to 280 ° C. Under normal pressure to reduced pressure at a temperature of ⁇ Example of vacuum degree: 0.01 to 500 Pa ⁇ , preferably in a vacuum oven (vacuum degree: the same as above), followed by secondary vulcanization.
- the plasma resistance is superior to that of conventional fluoro rubber (FKM), and even when used continuously for a long time at a high temperature in a semiconductor manufacturing process or the like, stickiness and adhesion to a mating member are prevented.
- FKM fluoro rubber
- a rubber composition that can be vulcanized so that a sealing material for a plasma processing apparatus that does not cause the problem of particle generation that does not easily occur can be obtained at low cost.
- the primary vulcanization molding of the composition after the primary vulcanization molding of the composition, it is performed at a temperature of 150 to 300 ° C, preferably 200 ° C to 280 ° C under normal pressure to reduced pressure, preferably in a vacuum oven.
- a sealing material for a plasma processing apparatus which is vulcanized and has the above characteristics.
- the vulcanized molded product represented by the sealing material for plasma processing apparatus according to the present invention is excellent in non-adhesiveness with a counterpart member and has good mold releasability, so that it can be obtained by plasma pressing or the like. It is possible to manufacture a sealing material for a processing apparatus and the like efficiently and safely at a low cost.
- FIG. 1 is a diagram showing a test for fixing test performed by attaching an O-ring to a flange, and its test method. It is explanatory drawing of.
- FIG. 2 is a schematic diagram of a particle test apparatus for measuring the amount of particles by attaching an O-ring to a flange.
- the rubber composition according to the present invention is a vulcanizable and reactive rubber composition before curing, which includes a crosslinkable fluororubber (a), a specific reactive fluorine-based compound (b), and a specific rubber composition. It contains a reactive organosilicon compound (c), a vulcanizing agent (d-1), and, if necessary, a co-crosslinking agent (d-2).
- cross-linkable fluororubber (a) a base rubber that is desired to be a rubber material that can provide a seal material resistant to plasma (plasma etching treatment) used in various semiconductor dry processes in light of the object of the present invention is desirable.
- the material (a) generally known fluororubber having excellent plasma resistance is used.
- Biridene fluoride crosslinkable fluororubber FKM may be used alone
- crosslinkable fluororubber (a) for example, the ones listed in “Development of Fluorine-Based Materials” (1997, published by CM1 Corporation, Yamabe, Matsuo, Table 1 of 64p) can be used. ,In particular,
- VDF Binary Biridene Fluoride
- HFP Hexafluoropropylene
- FKM Copolymer Rubber
- TFE Tetrafluorinated Tylene
- FFKM butyl ether copolymer rubber
- TFE tetrafluoroethylene
- the cross-linkable FKMs include the product names “Buyton” (manufactured by DuPont), “Daiel G902, G912J (manufactured by Daikin Industries),” “Miraflon” ( Asahi Kasei), “Florel” (manufactured by 3M), and “Technoflon” (manufactured by Solvay Solexis) can all be used.
- the base rubber (a) As the base rubber (a), a cheaper FKM is used alone, or a material containing FKM as a main component and a small amount of FFKM or the like is mainly used. From the standpoint of plasma resistance, the use of crosslinkable FFKM increases the cost of power to provide the best seal material. In contrast, the present invention is based on the cheaper and more versatile FKM, and its resistance to A rubber material for sealing that can be used as a semiconductor sealing material at low cost with improved laser and adhesive properties can be obtained!
- the hydrogen directly connected to the main chain carbon is completely removed from the viewpoint of, for example, improving the plasma resistance of the FKM significantly (see Example 5).
- a small amount of the above-mentioned cross-linkable perfluoro fluorocarbon rubber (FFKM) and the above-mentioned cross-linkable fluoroplastic elastomer e.g., 20 parts by weight or less, preferably 100 parts by weight of cross-linkable FKM. May be used in a mixture of about 10 to 1 part by weight.
- the reactive fluorine-based compound (b) has a divalent perfluoropolyether structure or a divalent perfluoroalkylene structure, and has at least a hydrosilyl group ( ⁇ Si—) in the organosilicon compound (c) at the terminal or side chain. Those having two or more alkenyl groups capable of addition reaction with H) are used. This divalent perfluoropolyether structure or divalent perfluoroalkylene structure contributes to the curing reaction.
- the reactive fluorine-based compound (b) is represented by the following formula (1) as described in JP-A-2003-183402 (Patent Document 2). .
- X is independently -CH-, -CH ⁇ -, CH ⁇ CH-, -Y-NR'SO- or -Y-
- NR 1 -CO- (where Y is -CH- or -Si (CH)-Ph- (Ph: phenylene group), R 1 is hydrogen
- R is a divalent perfluoroalkyl f
- a lent group or a divalent perfluoropolyether group, p is independently 0 or 1, and a is an integer of 0 or more.
- Q is represented by the following general formula (2), (3) or (4).
- R 3 represents a substituted or unsubstituted divalent hydrocarbon group.
- R 4 is a substituted or unsubstituted divalent hydrocarbon group that may contain one or more of oxygen atom, nitrogen atom, key atom and sulfur atom in the middle of bonding, or the following formula ( 5) or a functional group represented by (6).
- R 5 is a substituted or unsubstituted monovalent hydrocarbon group
- R 6 is one or two of a carbon atom, an oxygen atom, a nitrogen atom, a silicon atom and a sulfur atom.
- Examples of such reactive fluorine compounds (b) include “SIFEL” (manufactured by Shin-Etsu Chemical Co., Ltd.).
- the reactive organosilicon compound (c) has two or more hydrosilyl groups ( ⁇ Si—H) in the molecule and is capable of addition reaction with at least the alkenyl group in the reactive fluorine-based compound (b). Things are used.
- the reactive organosilicon compound (c) is preferably a cross-linking polymer described in [0023] to [0027] of the above-mentioned JP-A-2003-183402 (Patent Document 2). No. 116684 (Patent Document 3) or Japanese Patent Application Laid-Open No. 1-116685 (Patent Document 4)
- Patent Document 3 Japanese Patent Application Laid-Open No. 1-116685
- the reactive fluorine-based compound (b) includes a reactive organosilicon compound (c) (crosslinking polymer) having two or more hydrosilyl groups in the molecule and capable of addition reaction with an alkenyl group. Bridged.
- Examples of the reactive organosilicon compound (c) include organonodogen polysiloxane having 2 hydrosilyl groups, preferably 3 or more.
- organohydropolyene polysiloxane organohydrodiene polysiloxanes usually used in addition reaction curable silicone rubber compositions can be used.
- the following compounds (7) and (8) Is desirable.
- R 2 is a substituted or unsubstituted monovalent hydrocarbon group
- b is 1 or 2 in the compound (7). Or 3, or 2 or 3 in the compound (8).
- the monovalent hydrocarbon group having 1 to 8 carbon atoms is preferred. Specifically, a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group, an isobutyl group, tert-butyl Group, pentyl group, neopentyl group, hexyl group, heptyl group, octyl group, etc.
- alkyl group alkyl group, cyclopentyl group, cyclohexyl group, cycloheptyl group etc., cycloalkyl group, phenol group, tolyl group, xylyl group
- a chloromethyl group a bromoethyl group, a aralkyl group such as a benzyl group, a phenyl group or the like, or a hydrogen atom of these groups partially or entirely substituted with a halogen atom such as fluorine, chlorine, bromine, etc.
- halogen atom such as fluorine, chlorine, bromine, etc. Examples thereof include chloropropyl group, trifluoropropyl group, 3,3,4,4,5,5,6,6,6-nonafluorohexyl group and the like.
- Examples of the reactive organic silicon compound (c) include, for example, a crosslinking agent CP-2 for rsiFEL (manufactured by Shin-Etsu Chemical Co., Ltd.).
- the reactive fluorine-based compound (b) and the reactive organosilicon compound (C) react and gel in the presence of a catalyst.
- Metallic compounds are preferably used.
- an addition reaction catalyst such as a platinum group metal compound described in [0028] of JP-A-2003-183402 (Patent Document 2) is preferably used.
- the same platinum group metal catalyst as described in Japanese Patent No. 116684 (Patent Document 3) or Japanese Patent Application Laid-Open No. 1-116685 (Patent Document 4) can be used.
- platinum group compound catalyst for the gelation reaction between the component (b) and the component (c) is also described in JP-A-2003-183402 (Patent Document 2).
- Patent Document 2 chloroplatinic acid or a complex of chloroplatinic acid and olefins such as ethylene, a complex of alcohol or bursiloxane, platinum Z (silica or alumina or carbon), etc. Is not to be done.
- platinum group metal compounds other than platinum compounds include rhodium, ruthenium, iridium, and noradium compounds.
- the amount of these catalysts used is not particularly limited, and a desired curing rate can be obtained with a catalytic amount.
- a reactive fluorine-based compound ( b) 0.1-1 OOOppm in terms of platinum group metal, more preferably 0. 0, with respect to the total amount of (component (b)) and reactive organosilicon compound (C) (component (C)). It should be in the range of l-500ppm.
- the “SIFEL POTTING GEL (SIFEL8070AZB)” (manufactured by Shin-Etsu Chemical Co., Ltd.) preferably used as the component “(b) + (c)” includes the reactive fluorine.
- Crosslinkable fluoro rubber (a) eg FKM
- vulcanizing agent (dl) vulcanizing agent
- co-crosslinking agent (d-2) etc.
- a molded product is obtained by crosslinking the fluororubber component and causing the addition reaction of the components (A) and (B) constituting “SIFEL8070AZB” to proceed to gelation (curing).
- the unvulcanized rubber composition according to the present invention usually contains a vulcanizing agent (d-1) and, if necessary, a co-crosslinking agent (d-2) as a crosslinking component (d). Both sulfur and co-crosslinking agents are included.
- vulcanizing agent (d-1) and co-crosslinking agent (d-2) conventionally known ones can be widely used, and as vulcanizing agent (d-1), unvulcanized ones can be used.
- Types of crosslinkable fluororubber (a) in vulcanized rubber composition As the vulcanization form of FKM that is selected and preferably used according to the above, polyamine vulcanization, polyol vulcanization, peroxide vulcanization (peroxide vulcanization), triazine vulcanization, etc. can be selected. Of these, peroxide vulcanization is preferred.
- the peroxide cross-linking agent described in JP-A-2003-155382 [0018] etc. previously proposed by the applicant of the present application can be preferably used.
- the co-crosslinking agent (d-2) a crosslinking aid for crosslinking peroxides described in [0019] of the same publication can be used.
- the peroxide cross-linking agent used as the vulcanizing agent (d-1) specifically, for example, 2,5-dimethyl-2,5- Di (t-butylperoxy) hexane (Nippon Yushi Co., Ltd. “Perhexa 25B”), Dicumyl peroxide (Nippon Yushi Co., Ltd. “Park Mill DJ”), 2,4-dichlorobenzoyl peroxide, di-t- Butyl peroxide, t-Butyl diamyl peroxide (Nippon Yushi Co., Ltd.
- d-1 specifically, for example, 2,5-dimethyl-2,5- Di (t-butylperoxy) hexane (Nippon Yushi Co., Ltd. “Perhexa 25B”), Dicumyl peroxide (Nippon Yushi Co., Ltd. “Park Mill DJ”), 2,4-dichlorobenzoyl peroxide, di-t- Butyl peroxide, t-But
- Park Mill D Benzyl peroxide, 2, 5-dimethyl-2,5 di (t-butyl peroxide) Hexin-3 (Nippon Yushi “Perhexine 25B”), 2,5-Dimethyl-2,5di (benzoylperoxy) hexane, ⁇ , a'-bis (t-butylperoxy-m-isopropyl) benzene (Japan) "Perbutyl ⁇ " made from fats and oils, ⁇ , ⁇ '-bis (t-butylperoxy-m-isopropyl) benzene t-butyl peroxide O carboxymethyl isopropyl carbonate, p-chlorobenzoyl I peroxide, t-Buchirupa base Nzoeto like.
- a peroxide crosslinking agent may be used alone as the vulcanizing agent! / ⁇ , if necessary, together with the peroxide crosslinking agent (d-1).
- Crosslinking agent (d-2) Peroxide crosslinking rack Also called bridge aid. ) Can be used.
- co-crosslinking agent (d-2) examples include triallyl isocyanurate (“TAIK” manufactured by Nippon Kasei Co., Ltd.), triallyl cyanurate (TAC), triallyl trimellitate, ⁇ , ⁇ '-m -Phenylene bismaleimide, dipropargyl terephthalate, diaryl phthalate, tetraaryl terephthalamide, ethylene glycol dimethacrylate (“Sanester EG” manufactured by Sanshin Chemical Co., Ltd.), trimethylolpropane trimer Tatalylate (“Sanester TMP” manufactured by Sanshin Chemical Co., Ltd.), multifunctional metathalylate monomer (“Neucross M” manufactured by Seiya Chemical Co., Ltd.), polyhydric alcohol methacrylate and acrylate, methacrylic Examples include compounds capable of co-crosslinking with radicals such as metal salts of acids. These co-crosslinking agents can be used alone or in combination of two or more.
- triallyl isocyanurate which has excellent reactivity and tends to improve the heat resistance of the obtained sealing material, is preferable.
- the rubber composition according to the present invention comprises a total of the reactive fluorine-based compound (b) and the reactive organosilicon compound (c) with respect to 100 parts by weight of the crosslinkable fluororubber (solid content) (a). Usually in an amount of 1-10 parts by weight, preferably 2-6 parts by weight
- the vulcanizing agent (crosslinking agent) (d-1) is contained in an amount of usually 0.5 to 2.5 parts by weight, preferably 0.5 to 2.0 parts by weight, if necessary, the co-crosslinking agent (d-2) is contained.
- the co-crosslinking agent (d-2) is contained in an amount of usually 3 to 6 parts by weight, preferably 4 to 6 parts by weight.
- the vulcanizing agent (crosslinking agent) (d-1) is less than the above range, the crosslinking reaction tends to be insufficient, and if it is more than the above range, the reaction is too early and a completely desired molded product is obtained. Tends to be difficult to obtain.
- the co-crosslinking agent (d-2) is less than the above range, crosslinking tends to be insufficient.
- the seal material obtained more than the above range is used especially as a seal material for plasma processing equipment, and its crosslinking density becomes too high, which adversely affects physical properties such as elongation, and the seal material has a high temperature. There is a tendency for cracks to occur during compression.
- the reactive fluorine-based compound (b) and the reactive organosilicon compound (C) are usually used in the amount of (b)> (C) if necessary. May be.
- the (unvulcanized) rubber composition may further contain an acid acceptor, a filler, and the like.
- the acid acceptor is preferably required in polyamine vulcanization and polyol vulcanization.
- the acid acceptor examples include magnesium oxide and calcium hydroxide. If these acid acceptors are contained, particles may be generated during use of the obtained sealing material. Therefore, in the present invention, where it is desired that the sealing material does not contain any filler that is a source of particle generation, it is desirable to employ buroxide vulcanization, which is a vulcanization method that does not require an acid acceptor.
- fillers it is desirable not to use fillers as much as possible.
- organic and inorganic systems are used as necessary within the scope of the purpose of the present invention (for example, for the purpose of improving physical properties).
- Various fillers can also be blended.
- Examples of the inorganic filler include carbon black, silica, barium sulfate, titanium oxide, aluminum oxide, and the like.
- organic fillers examples include polytetrafluoroethylene resin, polyethylene resin, and polyimide resin.
- organic and inorganic fillers may be used alone or in combination.
- the filler usable in the present invention is not limited to these.
- a sealing material containing such polytetrafluoroethylene resin as a filler in which polytetrafluoroethylene resin is desired is preferable from the seal material. Particle generation can be prevented as much as possible, and even if the rubber component of the sealing material is etched, particles that adversely affect the semiconductor manufacturing process are relatively generated. There is an advantage that it is difficult to produce.
- the unvulcanized rubber composition is obtained by adding and mixing the vulcanizing agent (d-1) and, if necessary, the co-crosslinking agent (d-2).
- the order of adding these components (a) to (d) is arbitrary and is not particularly limited!
- the "catalyst for addition reaction of the reactive fluorine compound (b) and the reactive organosilicon compound (c)" is, for example, the reactive fluorine compound (b) and The reactive fluorine-based compound (b) and the reactive organosilicon compound (c) can be combined with the crosslinkable fluorine by adding an addition reaction catalyst to any of the reactive organosilicon compounds (c). When kneaded with rubber (a) or the like, it is added to and mixed with the blends (a) to (d).
- component (b) and component (c) are packaged separately, and in advance, component (b) or (c) is one of the “catalysts for promoting the addition reaction between components (b) and (c)”.
- component (b) or (c) is one of the “catalysts for promoting the addition reaction between components (b) and (c)”.
- rSIFEL PO TTING GEL SIFEL8070AZB
- Shin-Etsu Chemical Co., Ltd. etc.
- These blended ingredients are kneaded by a known method using a kneader such as an open roll mixer to prepare an unvulcanized rubber composition.
- the sealing material for a plasma processing apparatus is formed by vulcanizing and molding an unvulcanized rubber composition described above in a predetermined mold.
- the obtained vulcanized molded product such as a sealing material is excellent in plasma resistance and non-adhesiveness. Therefore, a sealing material used in a plasma processing process in a semiconductor manufacturing process, particularly a plasma processing chamber. It is possible to obtain an excellent sealant for a drive unit such as a gate valve used for an opening of one unit.
- an unvulcanized rubber composition (rubber compound) is filled into a mold or the like, and under pressure ⁇ example of mold pressure: l to 250kgf / cm 2 150 ⁇ 18 to ⁇ Under heating at 0 ° C, heat for about 5-20 minutes and vulcanize (primary vulcanization).
- the vulcanized product of the curable composition of the present invention can produce a vulcanized molded body such as a sealing material excellent in plasma resistance, non-adhesiveness and low particle property (low dust generation). .
- “SIFEL8070AZB” manufactured by Shin-Etsu Chemical Co., Ltd.
- “SIFEL3701AZB” for LIM molding and the like can be mentioned as those containing components (b) and (c). It is necessary to use the material presented.
- a rubber composition is prepared by blending components (b) and (c) in the liquid form with the rubber component (a), and this is molded into a rubber elastic body (seal material) by vulcanization molding.
- sealing material particularly excellent in plasma resistance and non-adhesiveness can be obtained.
- ordinary fluororubber blends often take the form of a certain phase structure (sea-island structure) in which both components are not completely dispersed. Weak to plasma inside, and it is thought that the deterioration progresses selectively from the part!
- the blend of component (b) (c) and fluororubber (a) showing a liquid used in the present invention tends to spread well during kneading. Perf with plasma properties
- the inventor infers that the fluoropolyether or perfluoroalkylene part is well protected in the weak region of the fluororubber to form a structure.
- the invention described in Document 2 is also common to the present invention in that it uses a “SIFEL” (manufactured by Shin-Etsu Chemical Co., Ltd.) product, but the “SIFEL” product used in the same document is used for mold forming.
- SIFEL8070AZB used as a component for "(b) + (c)" in the present invention is a gel-forming material, and does not contain (component (a) etc. )
- This “SIFEL8070AZB” is a soot material that can only be made into a gel even if it is molded by the original method.
- a sealing material that does not contain a filler which is considered to be a source of particles from the sealing material, can be used with the SIFEL POTTING GEL (SIFEL 8070A / B ) "Is most desirable.
- SIFEL POTTING GEL SIFEL 8070A / B
- fillers are pre-mixed, whereas SIFEL8070AZB is a gel-forming material and therefore does not contain fillers. it can.
- the filler is much more fluid, it is more preferable from the viewpoint of blend dispersibility.
- the components (b) and (c) may not be completely gelled only by vulcanization molding and may remain as unreacted components, and the temperature becomes high in this state.
- emitted gas may be generated.
- the vulcanized molded body represented by the sealing material for plasma processing apparatus according to the present invention has dramatically improved plasma resistance and non-adhesiveness as compared with the conventional product, and the blending of the filler is improved. Not necessary at all (filler content in the composition or vulcanized molded product: 0% by weight)-even if it is contained, it can be suppressed to a very small amount (eg, 1.0-LO: about 0% by weight). Even when used as a sealing material for a plasma processing apparatus, there is an excellent effect that particles are not generated.
- the sealing material is inexpensive because it is equivalent in price to fluoro rubber (FKM).
- an O-ring molded with a mold capable of forming an AS-ring of size AS568A-330 is attached to the flange, and the flange is bolted to the metal touch state.
- ⁇ Plasma resistance> As described in Japanese Patent Application Laid-Open No. 2004-134665, a parallel plate type low-temperature plasma irradiation device (electrode diameter ⁇ 300 mm, inter-electrode distance 50 mm) is used, and the ground side electrode and the plasma source are opposed to each other. Place a seal material on the electrode as a test piece, shield the plasma source side surface of the test piece with punching metal, and then shield the surface with steel wool. It was set to receive only the effects of radicals.
- a plasma irradiation test was conducted under the conditions of 20 (ccZ min, flow rate ratio (volume ratio)), total gas flow rate 150sccm, and vacuum degree 80Pa.
- the weight (mass) of the sealing material before and after the test was measured, and the mass reduction rate was calculated by the following formula, where x was the mass (g) before the test and y (g) was the mass after the test.
- Mass reduction rate (%) [(x-y) / x] X 100
- a platinum group compound catalyst for the addition reaction between (b) and (c) “SIFEL 8070A / BJ ⁇ Shin-Etsu Chemical Co., Ltd. ⁇ ”, which is a gelable component by the reaction between b) and (c),
- a rubber compound was obtained by kneading for 1.0 hour at a temperature of 60 ° C. using an open roll. [0063] The rubber compound was filled into a mold, and was subjected to crosslinking molding by applying a pressure of 50 kgf / cm 2 and heating at a temperature of 165 ° C for 15 minutes (primary vulcanization molding).
- the primary vulcanized molded body was taken out from the mold and heated at 200 ° C. for 12 hours under a reduced pressure in a vacuum oven (vacuum degree: 3 OPa) (secondary vulcanization).
- the obtained molded product was measured for the normal properties, compression set (%), adhesion test (N), and plasma resistance (weight reduction rate (%), shielded for 3 hours under the conditions) shown in Table 1 under the above test conditions. did.
- a molded body was obtained in the same manner as in Example 1 except that the blending composition and the like were changed as shown in Table 1 in Example 1.
- the obtained molded product was measured for the normal properties, compression set (%), adhesion test ( ⁇ ), and plasma resistance (weight reduction rate (%), shielded for 3 hours under the conditions) shown in Table 1 under the above test conditions. did.
- Example 1 the secondary vulcanization conditions were changed from 200 ° CX 12 hours to 180 ° CX 12 hours as shown in Table 1, and primary to secondary vulcanization molding was performed in the same manner as in Example 1. A molded body was obtained.
- Example 6 according to Table 1, the unreacted component is “existing”, but it is only a trace amount, and there is no problem in basic normal physical properties, compression set, adhesion, and plasma resistance. If the location where this sealant is installed is a pipe other than the vicinity of the woofer chamber, it can be used without any problems. In addition, “Yes” in Example 6 is only a very small amount of unreacted components, and can be sufficiently used in the vicinity of one chamber.
- Example 1 As shown in the composition of Table 1, a molded product was obtained in the same manner as in Example 1 except that “SIFEL8070AZB” ⁇ manufactured by Shin-Etsu Chemical Co., Ltd. ⁇ was used. It was. [0067] The obtained molded article was measured for the normal properties, compression set (%), adhesion test (N), and plasma resistance shown in Table 1 under the above test conditions.
- Example 1 As shown in the composition of Table 1, “SIFEL3701 AZB” (manufactured by Shin-Etsu Chemical Co., Ltd.) containing a dedicated crosslinking agent and filler that is not peroxide-based is used in accordance with its usage. A molded body was formed by molding.
- This Comparative Example 2 corresponds to Example 4 of JP-A-2003-183402 (Patent Document 2) (rim molding type “SIFEL”).
- Note 1 “100 parts by weight of S1FEL 3701 A / BJ contains a cross-linking agent and filler.
- Note 2 “ TECN0FL0N PFR-94 ”manufactured by Solvey, peroxide addition type.
- the same particle test as described above was performed on the O-ring (dimensions: the same as above) obtained in the same manner as the molded bodies obtained in Examples 2 to 6, and the same result as above, that is, The number of generated particles was extremely small: several Z100 cycles at 100,000 operations (100 cycles immediately after installation), and 1 or less Z100 cycles at 1 to 50,000 operations.
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Sealing Material Composition (AREA)
- Gasket Seals (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
Description
Claims
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006548978A JP4675907B2 (ja) | 2004-12-20 | 2005-12-19 | ゴム組成物、プラズマ処理装置用シール材 |
| CN2005800435214A CN101080463B (zh) | 2004-12-20 | 2005-12-19 | 橡胶组合物、等离子体处理装置用密封材料 |
| EP05816557A EP1834990B1 (en) | 2004-12-20 | 2005-12-19 | Rubber composition and sealing material for plasma treatment device |
| US11/793,577 US20080153986A1 (en) | 2004-12-20 | 2005-12-19 | Rubber Composition and Sealing Material for Plasma Treatment Device |
| IL184002A IL184002A (en) | 2004-12-20 | 2007-06-17 | Rubber composition and sealant for plasma treatment device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004-368377 | 2004-12-20 | ||
| JP2004368377 | 2004-12-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006068099A1 true WO2006068099A1 (ja) | 2006-06-29 |
Family
ID=36601699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2005/023285 Ceased WO2006068099A1 (ja) | 2004-12-20 | 2005-12-19 | ゴム組成物、プラズマ処理装置用シール材 |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US20080153986A1 (ja) |
| EP (1) | EP1834990B1 (ja) |
| JP (1) | JP4675907B2 (ja) |
| KR (1) | KR100840484B1 (ja) |
| CN (1) | CN101080463B (ja) |
| IL (1) | IL184002A (ja) |
| TW (1) | TWI389961B (ja) |
| WO (1) | WO2006068099A1 (ja) |
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| WO2022065053A1 (ja) * | 2020-09-28 | 2022-03-31 | 株式会社バルカー | エラストマー組成物、シール材およびシール材の製造方法 |
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- 2005-12-19 WO PCT/JP2005/023285 patent/WO2006068099A1/ja not_active Ceased
- 2005-12-19 KR KR1020077016367A patent/KR100840484B1/ko not_active Expired - Lifetime
- 2005-12-19 CN CN2005800435214A patent/CN101080463B/zh not_active Expired - Lifetime
- 2005-12-19 EP EP05816557A patent/EP1834990B1/en not_active Expired - Lifetime
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| JP2009509012A (ja) * | 2005-09-21 | 2009-03-05 | カール・フロイデンベルク・カーゲー | ゴムコンパウンド |
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| JP2020070326A (ja) * | 2018-10-30 | 2020-05-07 | 三菱電線工業株式会社 | 未架橋フッ素ゴム組成物及びそれを用いて製造されるゴム製品 |
| JP2019214743A (ja) * | 2019-09-19 | 2019-12-19 | 三菱電線工業株式会社 | ゴム製品及びその製造方法 |
| WO2022065054A1 (ja) * | 2020-09-28 | 2022-03-31 | 株式会社バルカー | エラストマー組成物、シール材およびシール材の製造方法 |
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| EP4219611A4 (en) * | 2020-09-28 | 2024-10-16 | VALQUA, Ltd. | ELASTOMER COMPOSITION, SEALING MATERIAL AND METHOD FOR PRODUCING A SEALING MATERIAL |
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| JP7749570B2 (ja) | 2020-09-28 | 2025-10-06 | 株式会社バルカー | エラストマー組成物、シール材およびシール材の製造方法 |
| JP7766038B2 (ja) | 2020-09-28 | 2025-11-07 | 株式会社バルカー | エラストマー組成物、シール材およびシール材の製造方法 |
| JP7048713B1 (ja) | 2020-12-18 | 2022-04-05 | 三菱電線工業株式会社 | フッ素ゴム組成物及びそれを用いて形成されたゴム成形品 |
| WO2022130713A1 (ja) * | 2020-12-18 | 2022-06-23 | 三菱電線工業株式会社 | フッ素ゴム組成物及びそれを用いて形成されたゴム成形品 |
| WO2022131051A1 (ja) * | 2020-12-18 | 2022-06-23 | 三菱電線工業株式会社 | フッ素ゴム組成物及びそれを用いて形成されたゴム成形品 |
| JP2022096901A (ja) * | 2020-12-18 | 2022-06-30 | 三菱電線工業株式会社 | フッ素ゴム組成物及びそれを用いて形成されたゴム成形品 |
| JP2022097403A (ja) * | 2020-12-18 | 2022-06-30 | 三菱電線工業株式会社 | ゴム成形品 |
Also Published As
| Publication number | Publication date |
|---|---|
| IL184002A0 (en) | 2007-10-31 |
| US20080153986A1 (en) | 2008-06-26 |
| EP1834990B1 (en) | 2012-03-07 |
| CN101080463A (zh) | 2007-11-28 |
| EP1834990A4 (en) | 2009-08-26 |
| EP1834990A1 (en) | 2007-09-19 |
| IL184002A (en) | 2013-05-30 |
| TW200626651A (en) | 2006-08-01 |
| TWI389961B (zh) | 2013-03-21 |
| JP4675907B2 (ja) | 2011-04-27 |
| KR20070089863A (ko) | 2007-09-03 |
| CN101080463B (zh) | 2010-06-23 |
| KR100840484B1 (ko) | 2008-06-20 |
| JPWO2006068099A1 (ja) | 2008-06-12 |
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