WO2024071790A1 - 내열성 및 산화 안정성이 우수한 폴리이미드 수지 및 이의 제조방법 - Google Patents
내열성 및 산화 안정성이 우수한 폴리이미드 수지 및 이의 제조방법 Download PDFInfo
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- WO2024071790A1 WO2024071790A1 PCT/KR2023/014046 KR2023014046W WO2024071790A1 WO 2024071790 A1 WO2024071790 A1 WO 2024071790A1 KR 2023014046 W KR2023014046 W KR 2023014046W WO 2024071790 A1 WO2024071790 A1 WO 2024071790A1
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- polyimide resin
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- dianhydride
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
- C08G73/1067—Wholly aromatic polyimides, i.e. having both tetracarboxylic and diamino moieties aromatically bound
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
- C08G73/1003—Preparatory processes
- C08G73/1007—Preparatory processes from tetracarboxylic acids or derivatives and diamines
- C08G73/1028—Preparatory processes from tetracarboxylic acids or derivatives and diamines characterised by the process itself, e.g. steps, continuous
- C08G73/1032—Preparatory processes from tetracarboxylic acids or derivatives and diamines characterised by the process itself, e.g. steps, continuous characterised by the solvent(s) used
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
- C08G73/1046—Polyimides containing oxygen in the form of ether bonds in the main chain
- C08G73/105—Polyimides containing oxygen in the form of ether bonds in the main chain with oxygen only in the diamino moiety
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
- C08K3/041—Carbon nanotubes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L79/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen or carbon only, not provided for in groups C08L61/00 - C08L77/00
- C08L79/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
- C08L79/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/001—Conductive additives
Definitions
- the present invention relates to a polyimide resin having excellent heat resistance and oxidation stability and a method for producing the same.
- Polyimide has heat and chemical resistance, and aromatic polyimide in particular has excellent mechanical properties and electrical insulation due to its rigid main chain structure.
- a polyimide resin with excellent heat resistance can be obtained by converting polyamic acid into polyimide through an imidization reaction in a solvent soluble in the precursor, but the polyimide resin has poor mechanical properties.
- the purpose of the present invention is to provide a polyimide resin with excellent heat resistance.
- the purpose of the present invention is to provide a polyimide resin with excellent oxidation stability.
- the purpose of the present invention is to provide a molded body with excellent mechanical properties in which powders containing polyimide resin are well fused together.
- the polyimide resin according to an embodiment of the present invention contains a reaction product of a diamine compound and a dianhydride compound, and may have a half-life measured as follows of 150 minutes or more.
- the polyimide resin may have a tensile strength of 140 MPa or more.
- the polyimide resin may have an apparent density of 0.15 g/cm3 to 0.31 g/cm3.
- the diamine compounds include p-phenylenediamine (p-PDA) and m-phenylenediamine (m-PDA). It may include at least one selected from the group consisting of 4,4'-oxydianiline (ODA) and combinations thereof.
- p-PDA p-phenylenediamine
- m-PDA m-phenylenediamine
- ODA 4,4'-oxydianiline
- the diamine compound includes 70 mol% to 92 mol% of p-phenylenediamine; and 8 mol% to 30 mol% of 4,4'-oxydianiline.
- the diamine compound includes 70 mol% to 92 mol% of p-phenylenediamine; And it may include 8 mol% to 30 mol% of m-phenylenediamine.
- the dianhydride compound is 3,3',4,4'-Biphenyltetracarboxylic dianhydride (BPDA), Pyromellitic dianhydride (PMDA) ) and combinations thereof.
- BPDA 3,3',4,4'-Biphenyltetracarboxylic dianhydride
- PMDA Pyromellitic dianhydride
- the dianhydride compound includes 30 mol% to 70 mol% of 3,3',4,4'-biphenyltetracarboxylic acid dianhydride; And it may include 30 mol% to 70 mol% of pyromellitic acid dianhydride.
- the molar ratio of the diamine compound and the dianhydride compound may be 40:60 to 60:40.
- the molded body according to an embodiment of the present invention may include the polyimide resin.
- the molded body may further include graphite.
- the molded body further includes a conductive additive, and the conductive additive may include at least one selected from the group consisting of carbon nanotubes, carbon black, and combinations thereof.
- a method for producing a polyimide resin according to an embodiment of the present invention includes preparing a starting material containing a diamine compound and a dianhydride compound; Preparing a mixed solvent including a first solvent soluble in the starting material and a second solvent insoluble in the starting material; and adding the starting material to the mixed solvent and reacting the starting material.
- the first solvent is N-methyl-2-pyrrolidone (NMP), dimethylformamide (N,N-dimethylformamide (DMF), dimethylacetamide (DMAc), pyridine ( Pyridine), tetrahydrofuran (THF), and combinations thereof.
- NMP N-methyl-2-pyrrolidone
- DMF dimethylformamide
- DMAc dimethylacetamide
- pyridine Pyridine
- THF tetrahydrofuran
- the second solvent may include at least one selected from the group consisting of xylene, water, ethanol, methanol, isopropyl alcohol, and combinations thereof.
- the mixed solvent is 58% to 70% by weight of the first solvent; And it may include 30% to 42% by weight of the second solvent.
- a polyimide resin with excellent heat resistance and oxidation stability can be obtained.
- powders containing polyimide resin are well fused together to obtain a molded body with excellent mechanical properties.
- first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.
- a first component may be named a second component, and similarly, the second component may also be named a first component without departing from the scope of the present invention.
- Singular expressions include plural expressions unless the context clearly dictates otherwise.
- the polyimide resin according to the present invention may contain reactants of a diamine compound and a dianhydride compound.
- the present invention is characterized by improving the heat resistance and oxidation stability of polyimide resin through a specific combination of the diamine compound and dianhydride compound.
- the heat resistance of the polyimide resin was increased and at the same time, mechanical properties such as tensile strength and elongation were prevented from being reduced.
- the formulation of the polyimide resin is not particularly limited.
- the polyimide resin may be in powder form, emulsion form, dispersion form, etc.
- the reactant may include a copolymer of the diamine compound and the dianhydride compound.
- the reactant may include a unit structure derived from the diamine compound and a unit structure derived from the dianhydride compound. Additionally, the reactant may include random copolymer, block copolymer, or alternating copolymer.
- the diamine compounds include p-phenylenediamine (p-PDA) and m-phenylenediamine (m-PDA). It may include at least one selected from the group consisting of 4,4'-oxydianiline (ODA) and combinations thereof.
- p-PDA p-phenylenediamine
- m-PDA m-phenylenediamine
- ODA 4,4'-oxydianiline
- the diamine compound may include 70 mol% to 92 mol% of p-phenylenediamine and 8 mol% to 30 mol% of 4,4'-oxydianiline. Additionally, the diamine compound may include 70 mol% to 92 mol% of p-phenylenediamine and 8 mol% to 30 mol% of m-phenylenediamine.
- the p-phenylenediamine has a rigid structure, and the 4,4'-oxydianiline and m-phenylenediamine have a flexible structure. By using them in an appropriate amount, the heat resistance, oxidation stability, and stability of the polyimide resin are improved. Mechanical properties can be improved in a balanced manner.
- the dianhydride compound is 3,3',4,4'-Biphenyltetracarboxylic dianhydride (BPDA), Pyromellitic dianhydride (PMDA) ) and combinations thereof.
- BPDA 3,3',4,4'-Biphenyltetracarboxylic dianhydride
- PMDA Pyromellitic dianhydride
- the dianhydride compound may include 30 mol% to 70 mol% of 3,3',4,4'-biphenyltetracarboxylic acid dianhydride and 30 mol% to 70 mol% of pyromellitic acid dianhydride.
- the 3,3',4,4'-biphenyltetracarboxylic acid dianhydride has a flexible structure
- the pyromellitic acid dianhydride has a rigid structure. By using them in an appropriate amount, the heat resistance of the polyimide resin can be improved. , oxidation stability and mechanical properties can be improved in a balanced manner.
- the molar ratio of the diamine compound and the dianhydride compound may be 40:60 to 60:40, or 50:50.
- the heat resistance and oxidation stability of the polyimide resin can be evaluated by half-life.
- the half-life may refer to the time required for the weight reduction of the specimen to reach 50% when the specimen containing the polyimide resin is heat-treated in an air atmosphere.
- the weight reduction may refer to the ratio of the weight of the specimen at the time of measurement to the weight of the specimen before the start of heat treatment. The method for measuring the half-life will be described later.
- the half-life of the polyimide resin may be 150 minutes or more.
- the upper limit of the half-life is not particularly limited, and may be, for example, 300 minutes or less, 250 minutes or less, or 210 minutes or less.
- the tensile strength of the polyimide resin may be 140 MPa or more.
- the upper limit of the tensile strength is not particularly limited, and may be, for example, 200 MPa or less, 190 MPa or less, 180 MPa or less, or 170 MPa or less.
- the elongation of the polyimide resin may be 5% or more.
- the upper limit of the elongation is not particularly limited, and may be, for example, 20% or less, 18% or less, or 15% or less.
- the half-life, heat resistance, tensile strength, and elongation may be physical properties of a molded body containing the polyimide resin.
- the molded body according to the present invention may include the polyimide resin.
- the shape of the molded body is not particularly limited and may be in the form of a sheet, pellet, etc.
- the manufacturing method of the molded body is not particularly limited, and it can be manufactured by compression molding the polyimide resin and then baking it.
- the method of manufacturing the molded body may be baking the compression molded polyimide resin at a temperature of 300°C to 450°C for 5 to 36 hours in a nitrogen atmosphere.
- the molded body may further include graphite. Molded bodies obtained by combining polyimide resin and graphite can be used as functional materials in various fields.
- the molded body may further include a conductive additive.
- the conductive additive may include any material that has electrical conductivity, and may include, for example, at least one carbon material selected from the group consisting of carbon nanotubes, carbon black, and combinations thereof.
- the method for producing a polyimide resin according to the present invention includes preparing a starting material containing a diamine compound and a dianhydride compound, a first solvent soluble in the starting material, and a second solvent insoluble in the starting material. It may include preparing a mixed solvent containing a and adding the starting material to the mixed solvent and reacting the starting material.
- the present invention is characterized in that the solubility of the starting material in the mixed solvent is controlled in detail by combining the first solvent and the second solvent in an appropriate ratio. Additionally, unlike the prior art, the azeotropic point and reaction temperature of the mixed solvent can be adjusted by combining a second solvent insoluble in the starting material with the first solvent.
- the apparent density of the final material, polyimide resin can be adjusted to an appropriate level through the solubility and reaction temperature.
- the apparent density is a physical property related to the filling amount of the polyimide resin when manufacturing the molded body, and the apparent density of the polyimide resin may be 0.15 g/cm3 to 0.31 g/cm3. When the apparent density of the polyimide resin is within the above range, fusion between the polyimide resins occurs easily, thereby preventing a decrease in the mechanical strength of the molded product.
- the first solvent may include a solvent that is soluble in the starting material.
- Solubility in the starting material may mean the property of dissolving the starting material by more than 50%, more than 60%, more than 70%, more than 80%, more than 90%, or more than 100%.
- the unit of the ratio may be mass, volume, or mole.
- the first solvent is N-methyl-2-pyrrolidone (NMP), dimethylformamide (N,N-dimethylformamide (DMF), dimethylacetamide (DMAc), pyridine ( Pyridine), tetrahydrofuran (THF), and combinations thereof.
- NMP N-methyl-2-pyrrolidone
- DMF dimethylformamide
- DMAc dimethylacetamide
- pyridine Pyridine
- THF tetrahydrofuran
- the second solvent may include a solvent that is insoluble in the starting material.
- the lack of solubility in the starting material may mean the property of dissolving the starting material at 20% or less, 10% or less, or 0%.
- the unit of the ratio may be mass, volume, or mole.
- the second solvent may include at least one selected from the group consisting of xylene, water, ethanol, methanol, isopropyl alcohol, and combinations thereof.
- the mixed solvent may include 58% to 70% by weight of the first solvent and 30% to 42% by weight of the second solvent. When the contents of the first solvent and the second solvent are within the above range, the effect according to the present invention described above can be realized.
- a reactor equipped with a Dean-stark trap, stirrer, temperature control device, and nitrogen injection device was prepared. The reactor was placed in a nitrogen atmosphere.
- a mixed solvent was prepared by mixing 65% by weight of N-methyl-2-pyrrolidone (NMP) as a first solvent and 35% by weight of xylene as a second solvent, and the mixed solvent was added to the reactor.
- NMP N-methyl-2-pyrrolidone
- p-PDA p-phenylenediamine
- ODA 4,4'-oxydianiline
- BPDA 3,3',4,4'-biphenyltetracarboxylic acid dianhydride
- PMDA pyromellitic acid dianhydride
- the reaction After raising the temperature of the reactor to about 70°C, the reaction proceeded for about 3 hours. Afterwards, the temperature of the reactor was raised to about 150°C, and an imidization reaction occurred for about 2 hours. Water generated during the reaction was removed with a Dean-Stark trap. After the reaction was completed, the formed polyimide resin in powder form was collected, filtered and washed with acetone, and then sufficiently dried in a vacuum oven.
- the polyimide resin powder was molded at a pressure of 100,000 psi and sintered at 400°C for 11 hours to prepare a molded specimen.
- Polyimide resin and molded product specimens were manufactured in the same manner as Example 1, except that the ratio of the diamine compound was adjusted as shown in Table 1 below.
- the half-life of the polyimide resin according to Examples 1 to 3 and Comparative Examples 1 to 3 was measured as follows.
- thermogravimetric analysis TGA
- the analyzer was placed in a nitrogen atmosphere and the temperature was raised to 520°C at a rate of 10°C per minute. Since the analyzer was created in a nitrogen atmosphere without oxygen, there is almost no weight loss during the temperature increase section, so it does not significantly affect the results.
- the temperature reached 520°C the inside of the analyzer was converted to an air atmosphere, and the time when the weight of the specimen reached 50% of the initial weight was measured.
- the half-life may mean the time at which the measured value becomes 50% of the initial weight of the specimen when the specimen is heat-treated at 520°C in an air atmosphere and the weight of the specimen is measured.
- the weight of the initial specimen may be the weight of the specimen before being introduced into the analyzer, or it may be the weight of the specimen when the temperature reaches 520°C.
- Comparative Example 2 in which the content of 4,4'-oxydianiline (ODA), a diamine compound, is less than 8 mol% shows a half-life similar to that of the Examples, but the tensile strength and elongation are very low.
- Comparative Examples 1 and 3 when the content of 4,4'-oxydianiline (ODA) exceeds 30 mol%, Comparative Examples 1 and 3 have excellent tensile strength and elongation, but the half-life is very short, so it can be seen that the oxidation stability is reduced. .
- Polyimide resin and molded product specimens were manufactured in the same manner as in Example 1, except that the type and ratio of the diamine compound were adjusted as shown in Table 3 below.
- Comparative Example 4 in which the content of m-phenylenediamine (m-PDA), a diamine compound, is less than 8 mol%, has very poor tensile strength and elongation, and Comparative Example 4 in which the content of m-phenylenediamine (m-PDA) is more than 30 mol%
- Example 5 has a very short half-life.
- Examples 4 and 5 which are reactants of a diamine compound and a dianhydride compound in a specific combination and content presented in the present invention, improved oxidation stability and mechanical strength in a balanced manner.
- Polyimide resin and molded product specimens were manufactured in the same manner as in Example 1, except that the ratio of the dianhydride compound was adjusted as shown in Table 5 below.
- Examples 6 and 7 which are reactants of a diamine compound and a dianhydride compound in a specific combination and content presented in the present invention, improved oxidation stability and mechanical strength in a balanced manner.
- Polyimide resin and molded product specimens were manufactured in the same manner as Example 1, except that the type and ratio of the mixed solvent were adjusted as shown in Table 7 below.
- Comparative Examples 8 to 11 in which the content of the second solvent exceeds the 30 to 42 wt% suggested by the present invention, have very poor mechanical properties.
- Examples 8 to 13 using the specific combination and content of mixed solvents presented in the present invention have excellent mechanical properties and an appropriate apparent density.
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- Chemical Kinetics & Catalysis (AREA)
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Abstract
Description
| 구분 | 이무수물 화합물[mol%] | 디아민 화합물[mol%] | 혼합용매[중량%] | |||
| PMDA | BPDA | p-PDA | ODA | 제1 용매 | 제2 용매 | |
| NMP | 자일렌 | |||||
| 비교예1 | 100 | - | - | 100 | 65 | 35 |
| 비교예2 | 50 | 50 | 95 | 5 | 65 | 35 |
| 실시예2 | 50 | 50 | 92 | 8 | 65 | 35 |
| 실시예1 | 50 | 50 | 85 | 15 | 65 | 35 |
| 실시예3 | 50 | 50 | 70 | 30 | 65 | 35 |
| 비교예3 | 50 | 50 | 60 | 40 | 65 | 35 |
| 구분 | 반감기[분] | 인장강도[㎫] | 신율[%] |
| 비교예1 | 95 | 110 | 10 |
| 비교예2 | 213 | 90 | 2.3 |
| 실시예2 | 210 | 152 | 6.5 |
| 실시예1 | 201 | 160 | 8.8 |
| 실시예3 | 152 | 146 | 12.1 |
| 비교예3 | 140 | 140 | 14.2 |
| 구분 | 이무수물 화합물[mol%] | 디아민 화합물[mol%] | 혼합용매[중량%] | |||
| PMDA | BPDA | p-PDA | m-PDA | 제1 용매 | 제2 용매 | |
| NMP | 자일렌 | |||||
| 비교예4 | 50 | 50 | 95 | 5 | 65 | 35 |
| 실시예4 | 50 | 50 | 80 | 20 | 65 | 35 |
| 실시예5 | 50 | 50 | 70 | 30 | 65 | 35 |
| 비교예5 | 50 | 50 | 30 | 70 | 65 | 35 |
| 구분 | 반감기[분] | 인장강도[㎫] | 신율[%] |
| 비교예4 | 215 | 78 | 2.2 |
| 실시예4 | 185 | 152 | 6.6 |
| 실시예5 | 172 | 148 | 8.2 |
| 비교예5 | 148 | 146 | 11.1 |
| 구분 | 이무수물 화합물[mol%] | 디아민 화합물[mol%] | 혼합용매[중량%] | |||
| PMDA | BPDA | p-PDA | ODA | 제1 용매 | 제2 용매 | |
| NMP | 자일렌 | |||||
| 비교예1 | 100 | - | - | 100 | 65 | 35 |
| 비교예6 | 80 | 20 | 85 | 15 | 65 | 35 |
| 실시예6 | 70 | 30 | 85 | 15 | 65 | 35 |
| 실시예1 | 50 | 50 | 85 | 15 | 65 | 35 |
| 실시예7 | 30 | 70 | 85 | 15 | 65 | 35 |
| 비교예7 | 20 | 80 | 85 | 15 | 65 | 35 |
| 구분 | 반감기[분] | 인장강도[㎫] | 신율[%] |
| 비교예1 | 95 | 110 | 10 |
| 비교예6 | 190 | 52 | 1.2 |
| 실시예6 | 183 | 141 | 5.5 |
| 실시예1 | 201 | 160 | 8.8 |
| 실시예7 | 152 | 163 | 7.8 |
| 비교예7 | 145 | 167 | 7.6 |
| 구분 | 이무수물 화합물[mol%] | 디아민 화합물[mol%] | 혼합용매[중량%] | |||||
| PMDA | BPDA | p-PDA | ODA | 제1 용매 | 제2 용매 | |||
| NMP | DMF | THF | 자일렌 | |||||
| 비교예8 | 50 | 50 | 85 | 15 | 55 | - | - | 45 |
| 실시예8 | 50 | 50 | 85 | 15 | 58 | - | - | 42 |
| 실시예1 | 50 | 50 | 85 | 15 | 65 | - | - | 35 |
| 실시예9 | 50 | 50 | 85 | 15 | 70 | - | - | 30 |
| 실시예10 | 50 | 50 | 85 | 15 | 50 | 15 | - | 35 |
| 실시예11 | 50 | 50 | 85 | 15 | 55 | 10 | - | 35 |
| 실시예12 | 50 | 50 | 85 | 15 | 60 | - | 5 | 35 |
| 실시예13 | 50 | 50 | 85 | 15 | 58 | - | 4 | 38 |
| 비교예9 | 50 | 50 | 85 | 15 | 70 | - | 5 | 25 |
| 비교예10 | 50 | 50 | 85 | 15 | 75 | - | - | 25 |
| 비교예11 | 50 | 50 | 85 | 15 | 100 | - | - | - |
| 구분 | 인장강도[㎫] | 신율[%] | 겉보기 밀도[g/㎤] |
| 비교예8 | 58 | 1.8 | 0.27 |
| 실시예8 | 145 | 7.2 | 0.25 |
| 실시예1 | 160 | 8.8 | 0.18 |
| 실시예9 | 140 | 6.5 | 0.28 |
| 실시예10 | 156 | 7.5 | 0.22 |
| 실시예11 | 158 | 7.7 | 0.20 |
| 실시예12 | 152 | 7.5 | 0.31 |
| 실시예13 | 155 | 7.5 | 0.29 |
| 비교예9 | 66 | 2.0 | 0.37 |
| 비교예10 | 66 | 2.0 | 0.39 |
| 비교예11 | 폴리이미드 수지가 바스러져 시편 제조 불가함 | - | |
Claims (22)
- 디아민 화합물 및 이무수물 화합물의 반응물을 포함하고,하기에 따라 측정한 반감기가 150분 이상인 폴리이미드 수지.[반감기]시편을 공기 분위기에서 520℃로 열처리하며 시편의 무게를 측정할 때, 측정값이 최초 시편의 무게의 50%가 되는 시점의 시간을 측정함.
- 제1항에 있어서,인장강도가 140㎫ 이상인 폴리이미드 수지.
- 제1항에 있어서,겉보기 밀도가 0.15g/㎤ 내지 0.31g/㎤인 폴리이미드 수지.
- 제1항에 있어서,상기 디아민 화합물은 p-페닐렌디아민(p-phenylenediamine, p-PDA), m-페닐렌디아민(m-phenylenediamine, m-PDA). 4,4'-옥시디아닐린(4,4′-oxydianiline, ODA) 및 이들의 조합으로 이루어진 군으로부터 선택된 적어도 하나를 포함하는 폴리이미드 수지.
- 제1항에 있어서,상기 디아민 화합물은p-페닐렌디아민 70mol% 내지 92mol%; 및4,4'-옥시디아닐린 8mol% 내지 30mol%를 포함하는 폴리이미드 수지.
- 제1항에 있어서,상기 디아민 화합물은p-페닐렌디아민 70mol% 내지 92mol%; 및m-페닐렌디아민 8mol% 내지 30mol%를 포함하는 폴리이미드 수지.
- 제1항에 있어서,상기 이무수물 화합물은 3,3',4,4'-비페닐테트라카르복시산 디안하이드라이드(3,3′,4,4′-Biphenyltetracarboxylic dianhydride, BPDA), 피로멜리트산 디안하이드라이드(Pyromellitic dianhydride, PMDA) 및 이들의 조합으로 이루어진 군으로부터 선택된 적어도 하나를 포함하는 폴리이미드 수지.
- 제1항에 있어서,상기 이무수물 화합물은3,3',4,4'-비페닐테트라카르복시산 디안하이드라이드 30mol% 내지 70mol%; 및피로멜리트산 디안하이드라이드 30mol% 내지 70mol%를 포함하는 폴리이미드 수지.
- 제1항에 있어서,상기 디아민 화합물과 이무수물 화합물의 몰 비는 40:60 ~ 60:40인 폴리이미드 수지.
- 제1항 내지 제9항 중 어느 한 항의 폴리이미드 수지를 포함하는 성형체.
- 제10항에 있어서,그라파이트(Graphite)를 더 포함하는 성형체.
- 제10항에 있어서,상기 성형체는 도전성 첨가제를 더 포함하고,상기 도전성 첨가제는 카본나노튜브, 카본블랙 및 이들의 조합으로 이루어진 군으로부터 선택된 적어도 하나를 포함하는 성형체.
- 디아민 화합물 및 이무수물 화합물을 포함하는 출발물질을 준비하는 단계;상기 출발물질에 대한 용해성이 있는 제1 용매 및 상기 출발물질에 대한 용해성이 없는 제2 용매를 포함하는 혼합용매를 준비하는 단계; 및상기 출발물질을 상기 혼합용매에 투입하고 상기 출발물질을 반응시키는 단계;를 포함하고,하기에 따라 측정한 반감기가 150분 이상인 폴리이미드 수지의 제조방법.[반감기]시편을 공기 분위기에서 520℃로 열처리하며 시편의 무게를 측정할 때, 측정값이 최초 시편의 무게의 50%가 되는 시점의 시간을 측정함.
- 제13항에 있어서,인장강도가 140㎫ 이상인 폴리이미드 수지의 제조방법.
- 제13항에 있어서,겉보기 밀도가 0.15g/㎤ 내지 0.31g/㎤인 폴리이미드 수지의 제조방법.
- 제13항에 있어서,상기 디아민 화합물은p-페닐렌디아민 70mol% 내지 92mol%; 및4,4'-옥시디아닐린 8mol% 내지 30mol%를 포함하는 폴리이미드 수지의 제조방법.
- 제13항에 있어서,상기 디아민 화합물은p-페닐렌디아민 70mol% 내지 92mol%; 및m-페닐렌디아민 8mol% 내지 30mol%를 포함하는 폴리이미드 수지의 제조방법.
- 제13항에 있어서,상기 이무수물 화합물은3,3',4,4'-비페닐테트라카르복시산 디안하이드라이드 30mol% 내지 70mol%; 및피로멜리트산 디안하이드라이드 30mol% 내지 70mol%를 포함하는 폴리이미드 수지의 제조방법.
- 제13항에 있어서,상기 디아민 화합물과 이무수물 화합물의 몰 비는 40:60 ~ 60:40인 폴리이미드 수지의 제조방법.
- 제13항에 있어서,상기 제1 용매는 N-메틸-2-피롤리돈(N-methyl-2-pyrrolidone, NMP), 디메틸포름아마이드(N,N-dimethylformamide, DMF), 디메틸아세트아미드(Dimethylacetamide, DMAc), 피리딘(Pyridine), 테트라하이드로퓨란(Tetrahydrofuran, THF) 및 이들의 조합으로 이루어진 군으로부터 선택된 적어도 하나를 포함하는 폴리이미드 수지의 제조방법.
- 제13항에 있어서,상기 제2 용매는 자일렌(Xylene), 물, 에탄올, 메탄올, 이소프로필알콜(Isopropyl alcohol) 및 이들의 조합으로 이루어진 군으로부터 선택된 적어도 하나를 포함하는 폴리이미드 수지의 제조방법.
- 제13항에 있어서,상기 혼합용매는상기 제1 용매 58중량% 내지 70중량%; 및상기 제2 용매 30중량% 내지 42중량%를 포함하는 폴리이미드 수지의 제조방법.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20120101660A (ko) * | 2009-10-27 | 2012-09-14 | 이 아이 듀폰 디 네모아 앤드 캄파니 | 고온 마모 용도를 위한 폴리이미드 수지 |
| JP2018150544A (ja) * | 2018-05-01 | 2018-09-27 | 株式会社有沢製作所 | ポリイミド樹脂前駆体 |
| KR20190089688A (ko) * | 2018-01-22 | 2019-07-31 | 연세대학교 원주산학협력단 | 폴리이미드의 제조방법 |
| KR20190130526A (ko) * | 2019-11-08 | 2019-11-22 | 에스케이씨코오롱피아이 주식회사 | 연성동박적층판 제조용 폴리이미드 필름 및 이를 포함하는 연성동박적층판 |
| KR20210062902A (ko) * | 2019-11-22 | 2021-06-01 | 피아이첨단소재 주식회사 | 저유전 폴리이미드 복합 분말 및 그 제조방법 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120101660A (ko) * | 2009-10-27 | 2012-09-14 | 이 아이 듀폰 디 네모아 앤드 캄파니 | 고온 마모 용도를 위한 폴리이미드 수지 |
| KR20190089688A (ko) * | 2018-01-22 | 2019-07-31 | 연세대학교 원주산학협력단 | 폴리이미드의 제조방법 |
| JP2018150544A (ja) * | 2018-05-01 | 2018-09-27 | 株式会社有沢製作所 | ポリイミド樹脂前駆体 |
| KR20190130526A (ko) * | 2019-11-08 | 2019-11-22 | 에스케이씨코오롱피아이 주식회사 | 연성동박적층판 제조용 폴리이미드 필름 및 이를 포함하는 연성동박적층판 |
| KR20210062902A (ko) * | 2019-11-22 | 2021-06-01 | 피아이첨단소재 주식회사 | 저유전 폴리이미드 복합 분말 및 그 제조방법 |
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