JP2003268296A - Fluororesin composition for painting - Google Patents
Fluororesin composition for paintingInfo
- Publication number
- JP2003268296A JP2003268296A JP2002072779A JP2002072779A JP2003268296A JP 2003268296 A JP2003268296 A JP 2003268296A JP 2002072779 A JP2002072779 A JP 2002072779A JP 2002072779 A JP2002072779 A JP 2002072779A JP 2003268296 A JP2003268296 A JP 2003268296A
- Authority
- JP
- Japan
- Prior art keywords
- fluororesin
- coating
- composition
- tetrafluoroethylene
- modified
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000203 mixture Substances 0.000 title claims abstract description 27
- 238000010422 painting Methods 0.000 title 1
- 238000000576 coating method Methods 0.000 claims abstract description 61
- 239000011248 coating agent Substances 0.000 claims abstract description 59
- 239000000463 material Substances 0.000 claims abstract description 13
- 230000005855 radiation Effects 0.000 claims abstract description 13
- 238000002844 melting Methods 0.000 claims abstract description 12
- 230000008018 melting Effects 0.000 claims abstract description 12
- 229920005989 resin Polymers 0.000 claims description 14
- 239000011347 resin Substances 0.000 claims description 14
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 10
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 10
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 7
- 229920006026 co-polymeric resin Polymers 0.000 claims description 7
- 229910052731 fluorine Inorganic materials 0.000 claims description 7
- 239000011737 fluorine Substances 0.000 claims description 7
- 229920000840 ethylene tetrafluoroethylene copolymer Polymers 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- PEVRKKOYEFPFMN-UHFFFAOYSA-N 1,1,2,3,3,3-hexafluoroprop-1-ene;1,1,2,2-tetrafluoroethene Chemical group FC(F)=C(F)F.FC(F)=C(F)C(F)(F)F PEVRKKOYEFPFMN-UHFFFAOYSA-N 0.000 claims description 3
- 150000002222 fluorine compounds Chemical class 0.000 claims description 3
- 239000003607 modifier Substances 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 2
- 229910052739 hydrogen Inorganic materials 0.000 claims description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims description 2
- -1 polytetrafluoroethylene Polymers 0.000 claims description 2
- 239000011342 resin composition Substances 0.000 claims description 2
- 230000006866 deterioration Effects 0.000 abstract description 9
- 238000010304 firing Methods 0.000 abstract description 9
- 238000002156 mixing Methods 0.000 abstract description 7
- 230000003746 surface roughness Effects 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 230000000052 comparative effect Effects 0.000 description 12
- 239000000843 powder Substances 0.000 description 10
- 238000005299 abrasion Methods 0.000 description 7
- 238000010073 coating (rubber) Methods 0.000 description 6
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000004132 cross linking Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000008199 coating composition Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000007639 printing Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000010894 electron beam technology Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000007610 electrostatic coating method Methods 0.000 description 1
- 238000007720 emulsion polymerization reaction Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Landscapes
- Processes Of Treating Macromolecular Substances (AREA)
- Paints Or Removers (AREA)
Abstract
(57)【要約】
【課題】優れた離型性と耐摩耗性を兼備するとともに、
表面粗さの面でも優れた特質を備えた塗膜を形成するこ
とができ、さらに、塗膜形成のとき、塗装対象物に対す
る劣化作用が少ない塗装用ふっ素樹脂組成物を提供す
る。
【解決手段】融点が３００℃以下の母材ふっ素樹脂と、
放射線で分子間を架橋した改質ふっ素樹脂の混合によっ
て組成を構成し、塗膜形成のための焼成温度を３００℃
以下に設定する。(57) [Abstract] [Problem] While having both excellent release property and wear resistance,
Provided is a fluororesin composition for coating capable of forming a coating film having excellent characteristics even in terms of surface roughness and further having little deterioration effect on the object to be coated when forming the coating film. A base material fluororesin having a melting point of 300 ° C. or less;
The composition is composed by mixing a modified fluororesin whose molecules have been cross-linked by radiation, and the firing temperature for forming the coating film is 300 ° C.
Set as follows.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、塗装用ふっ素樹脂
組成物に関し、特に、優れた離型性と耐摩耗性を兼備す
るとともに、表面粗さの面でも優れた特質を備えた塗膜
を形成することができ、さらに、塗膜を形成するとき、
塗装対象物に対する劣化作用の少ない塗装用ふっ素樹脂
組成物に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluororesin composition for coating, and more particularly to a coating film having excellent releasability and abrasion resistance as well as excellent surface roughness. Can be formed, when further forming a coating film,
TECHNICAL FIELD The present invention relates to a fluororesin composition for coating, which has little deterioration effect on an object to be coated.
【０００２】[0002]
【従来の技術】複写機やプリンタ等の事務機において
は、画像のフルカラー化あるいは印画および印字速度が
急速に高速化しており、これに伴い、定着ローラに対す
る大幅な特性改善が求められている。即ち、離型剤の供
給を必要としないオイルレスの離型性がその要求であ
り、従来のゴム被覆ローラをもつてこれに対処すること
は困難である。2. Description of the Related Art In office machines such as copiers and printers, full-color images or printing and printing speeds are rapidly increasing, and with this trend, significant improvement in characteristics of fixing rollers is required. That is, the oil-less releasability which does not require the supply of the release agent is required, and it is difficult to deal with this by using the conventional rubber-coated roller.
【０００３】このため、優れた離型性を備える新規な定
着ローラとして、表面層をポリテトラフルオロエチレン
（ＰＴＦＥ）の塗膜によって構成したローラが提案され
ている。金属ローラ上にゴム被覆とＰＴＦＥの塗膜を順
に形成したもので、ゴム被覆による形状追随性とＰＴＦ
Ｅによる印刷部よりの離型性とを併せ備えており、前述
の要求に対応し得るローラとして相応の評価を受けてい
る。For this reason, as a novel fixing roller having an excellent releasability, a roller having a surface layer formed of a coating film of polytetrafluoroethylene (PTFE) has been proposed. A rubber roller and a PTFE coating film are formed in this order on a metal roller.
It also has the releasability from the printing portion due to E, and has been evaluated as a roller that can meet the above-mentioned requirements.
【０００４】[0004]
【発明が解決しようとする課題】しかし、従来のふっ素
樹脂塗膜を形成した定着ローラによると、ＰＴＦＥの塗
膜が耐摩耗性に劣るため、使用寿命が短く、さらに、ロ
ーラの表面にキズが付きやすい等の問題が指摘されてい
る。However, according to the conventional fixing roller having the fluororesin coating film formed thereon, the PTFE coating film has poor wear resistance, so that the service life is short and the surface of the roller is scratched. Problems such as easy attachment are pointed out.
【０００５】特に、定着ローラの使用温度が１３０〜２
００℃という高温であること、そして、高速化の進展に
よるさらなる定着ローラへの負荷の高まりを考慮すると
き、この耐摩耗性の不足は、大きな問題として顕在化す
ることになる。In particular, when the fixing roller is used at a temperature of 130 to 2
Considering that the temperature is as high as 00 ° C. and that the load on the fixing roller is further increased due to the increase in speed, this lack of abrasion resistance becomes a serious problem.
【０００６】また、以上の構成の定着ローラにあって
は、その構造上、ゴム被覆上でのＰＴＦＥ塗膜の焼成が
不可欠となるため、この塗膜形成が塗装下地であるゴム
被覆の熱劣化を促進させるように作用し、このため、短
寿命化に、より一層の拍車をかける問題も有している。Further, in the fixing roller having the above structure, since it is indispensable to bake the PTFE coating film on the rubber coating due to its structure, this coating film formation causes thermal deterioration of the rubber coating as the coating base. Therefore, there is also a problem of further shortening the life and further increasing the spur.
【０００７】従って、本発明の目的は、優れた離型性と
耐摩耗性を兼備するとともに、表面粗さの面でも優れた
特質を備えた塗膜を形成することができ、さらに、塗膜
を形成するとき、塗装対象物に対する劣化作用の少ない
塗装用ふっ素樹脂組成物を提供することにある。Therefore, an object of the present invention is to form a coating film having both excellent releasability and abrasion resistance and excellent characteristics in terms of surface roughness. It is intended to provide a fluororesin composition for coating which has less deterioration effect on the object to be coated when forming.
【０００８】[0008]
【課題を解決するための手段】本発明は、上記の目的を
達成するため、塗装対象物に塗布された後、焼成処理を
施されることによって所定の塗膜を形成する塗装用ふっ
素樹脂組成物において、融点が３００℃以下の母材ふっ
素樹脂と、放射線の照射により分子間を架橋された改質
ふっ素樹脂の混合物よりなり、かつ、前記焼成処理のた
めの温度が３００℃以下であることを特徴とする塗装用
ふっ素樹脂組成物を提供するものである。In order to achieve the above object, the present invention provides a fluororesin composition for coating which forms a predetermined coating film by being applied to an object to be coated and then subjected to a baking treatment. Of the base material fluorocarbon resin having a melting point of 300 ° C. or lower and a modified fluorocarbon resin whose molecules are cross-linked by irradiation with radiation, and the temperature for the firing treatment is 300 ° C. or lower. The present invention provides a fluororesin composition for coating characterized by the above.
【０００９】本発明において、融点が３００℃以下の母
材ふっ素樹脂と改質ふっ素樹脂の２種類のふっ素樹脂を
併用し、さらに、その使用条件として、塗装後の焼成温
度を３００℃以下に設定する意義は、第１に、母材ふっ
素樹脂によって塗膜形成時の高溶融流動性とこれによる
良好な連続塗膜形成性を確保するとともに、改質ふっ素
樹脂によって優れた耐摩耗性を確保することにあり、第
２には、同質であり、従って、本質的に相互分散性およ
び相溶性の良好な２つの材料の混合によって塗膜表面の
緻密性を確保するとともに、双方がふっ素樹脂であるこ
とによる優れた離型性を発揚させることにある。In the present invention, two kinds of fluororesin, that is, a base material fluororesin having a melting point of 300 ° C. or lower and a modified fluororesin are used in combination, and the firing temperature after coating is set to 300 ° C. or lower as the use condition. The significance of this is that, firstly, the base material fluororesin ensures high melt flowability at the time of coating film formation and good continuous coating film formability therewith, and the modified fluororesin ensures excellent abrasion resistance. Secondly, the second aspect is that they are homogeneous, and therefore, by mixing two materials having essentially good mutual dispersibility and compatibility, the denseness of the coating film surface is ensured, and both are fluororesins. It is to raise the excellent mold releasability.
【００１０】さらに、第３には、母材の融点と塗装後の
焼結条件とを従来のＰＴＦＥより低温となる３００℃以
下に設定することによって、塗装対象物の熱による劣化
を防ぐことにあり、そして、以上の第１〜第３の特質を
合わせることによって、離型性、耐摩耗性、塗装対象物
に対する保護性、および表面の緻密性の総合特性に優れ
た塗装用ふっ素樹脂組成物を提供することにある。Thirdly, by setting the melting point of the base material and the sintering condition after coating to 300 ° C. or lower, which is lower than that of conventional PTFE, it is possible to prevent deterioration of the coating object due to heat. And, by combining the above-mentioned first to third characteristics, a fluorine resin composition for coating excellent in releasability, abrasion resistance, protection against an object to be coated, and overall characteristics of surface denseness To provide.
【００１１】なお、本発明において、ふっ素樹脂に対す
る放射線の照射は、改質すべきふっ素樹脂を融点以上に
加熱し、照射雰囲気を１０ｔｏｒｒ以下の酸素濃度に設
定し、さらに、照射線量を１ｋＧｙ〜１０ＭＧｙに設定
して行うことが好ましく、これらの３条件が揃うとき、
放射線照射により生じる末端ラジカルの消滅のない効率
的架橋が可能となる。In the present invention, the irradiation of the fluorine resin with the radiation is performed by heating the fluorine resin to be modified to a temperature above its melting point, setting the irradiation atmosphere to an oxygen concentration of 10 torr or less, and further setting the irradiation dose to 1 kGy to 10 MGy. It is preferable to set it, and when these three conditions are met,
Efficient cross-linking is possible without annihilation of terminal radicals generated by irradiation with radiation.
【００１２】上記の３条件において、ふっ素樹脂を融点
以上に加熱することは、ふっ素樹脂の主鎖の分子運動を
活発化させ、これによって高効率の架橋を図ることを可
能にし、また、酸素濃度を１０ｔｏｒｒ以下に設定する
ことは、ふっ素樹脂の酸化劣化を防いで耐摩耗性向上へ
の悪影響をなくすと同時に、放射線照射による生成ラジ
カルの消費を防いで、効率的な架橋反応を可能にする。Under the above three conditions, heating the fluororesin above the melting point activates the molecular motion of the main chain of the fluororesin, which enables highly efficient cross-linking and also the oxygen concentration. Is set to 10 torr or less, the oxidative deterioration of the fluororesin is prevented and the abrasion resistance is not adversely affected, and at the same time, the consumption of generated radicals by irradiation of radiation is prevented, and an efficient crosslinking reaction is enabled.
【００１３】上記にいうふっ素樹脂の融点としては、Ｐ
ＴＦＥの場合で３２７℃に特定でき、後述するＰＦＡ、
ＭＦＡ、ＦＥＰおよびＥＴＦＥの場合で、それぞれ、順
に、３０５℃、２８５℃、２７５℃および２７０℃に特
定することができる。なお、ふっ素樹脂の加熱温度を過
度に高くすることは、分子主鎖の分解と切断を招くよう
になるので避けるべきであり、多くの場合、融点より１
０〜３０℃高くなる程度に設定される。The melting point of the above-mentioned fluororesin is P
In the case of TFE, it can be specified at 327 ° C, and PFA, which will be described later,
In the case of MFA, FEP and ETFE, respectively 305 ° C., 285 ° C., 275 ° C. and 270 ° C. can be specified respectively. It should be noted that an excessively high heating temperature of the fluororesin should be avoided because it may cause decomposition and breakage of the molecular main chain.
The temperature is set to be higher by 0 to 30 ° C.
【００１４】１ｋＧｙ〜１０ＭＧｙとする放射線の照射
線量は、下限においては、本発明の塗装用組成物より構
成される塗膜に対して、充分な耐摩耗性を与えるため、
そして、上限においては、放射線の照射による伸び特性
等の低下を防ぐうえで好適な条件となる。The lower limit of the radiation dose of 1 kGy to 10 MGy is to give sufficient abrasion resistance to the coating film composed of the coating composition of the present invention.
Then, the upper limit is a condition suitable for preventing the deterioration of the elongation property and the like due to the irradiation of radiation.
【００１５】本発明の母材を構成するふっ素樹脂として
は、テトラフルオロエチレンーパーフルオロメチルビニ
ルエーテル共重合樹脂（ＭＦＡ）、テトラフルオロエチ
レンーヘキサフルオロプロピレン共重合樹脂（ＦＥＰ）
およびエチレン−テトラフルオロエチレン共重合樹脂
（ＥＴＦＥ）より選択される少なくとも１種のふっ素樹
脂の使用が好ましく、一方、改質ふっ素樹脂としては、
ＰＴＦＥ、テトラフルオロエチレン−パーフルオロアル
キルビニルエーテル共重合樹脂（ＰＦＡ）、ＥＴＦＥお
よびＦＥＰより選択される少なくとも１種のふっ素樹脂
の使用が好ましい。As the fluororesin constituting the matrix of the present invention, tetrafluoroethylene-perfluoromethyl vinyl ether copolymer resin (MFA), tetrafluoroethylene-hexafluoropropylene copolymer resin (FEP)
And the use of at least one fluororesin selected from ethylene-tetrafluoroethylene copolymer resin (ETFE), on the other hand, as the modified fluororesin,
It is preferable to use at least one fluorine resin selected from PTFE, tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer resin (PFA), ETFE and FEP.
【００１６】また、母材ふっ素樹脂および改質ふっ素樹
脂のいずれの場合にも、上記した具体的な各樹脂に対し
て、１モル％以下の他の成分を共重合させることは可能
であり、用途および要求特性に応じた種々の共重合形式
によるふっ素樹脂の使用が可能である。Further, in both cases of the base material fluororesin and the modified fluororesin, it is possible to copolymerize 1 mol% or less of other components with respect to each of the above specific resins, It is possible to use a fluororesin in various copolymerization forms according to the application and required properties.
【００１７】なお、これら２つのふっ素樹脂の混合割合
は、下限においては、実用的な耐摩耗性を確保するた
め、そして、上限においては、形成する塗膜に対して均
一かつ緻密な表面状態を与えるとともに、優れた耐摩耗
性および耐久性を保証するため、５〜５０容量％の範囲
内に設定することが好ましい。The lower limit of the mixing ratio of these two fluororesins is to ensure practical wear resistance, and the upper limit of the mixing ratio is a uniform and dense surface condition for the coating film to be formed. It is preferable to set the content within the range of 5 to 50% by volume in order to provide excellent wear resistance and durability as well as to give.
【００１８】放射線の照射に際して、水素、ふっ素およ
びふっ素化合物より選択される少なくとも１種の改質剤
をふっ素樹脂に接触させ、これによって放射線照射によ
り生じた未反応あるいは残存不飽和結合への改質剤の反
応を起こさせることにより、高温での熱融着と軟化を防
止する架橋本来の効果を高めることは可能である。Upon irradiation with radiation, at least one modifier selected from hydrogen, fluorine and fluorine compounds is brought into contact with the fluororesin, whereby the unreacted or residual unsaturated bond produced by irradiation is modified. By causing a reaction of the agent, it is possible to enhance the original effect of crosslinking which prevents heat fusion and softening at high temperature.
【００１９】改質剤のふっ素樹脂に対する接触時期とし
ては、放射線の照射時あるいは照射後のいずれでもよ
い。また、その濃度の下限は、改質ふっ素樹脂に対する
良好な耐熱性付与のために少なくとも２６６Ｐａに設定
することが好ましく、一方、上限に関しては、特に制限
はないものの、安全上の観点から１０１．３ｋＰａ以下
に設定することが好ましい。The contact time of the modifier with the fluororesin may be during or after irradiation with radiation. In addition, the lower limit of the concentration is preferably set to at least 266 Pa in order to impart good heat resistance to the modified fluororesin, while the upper limit is not particularly limited, but from the viewpoint of safety, it is 101.3 kPa. It is preferable to set the following.
【００２０】なお、ふっ素化合物の具体例としては、Ｃ
ＬＦ3、ＢｒＦ3、ＳＦ4、ＣＦ3ＣＯＣＦ3、ＣＦ3ＣＨ
Ｏ、ＣＦ4、ＮＦ3、ＳｉＦ4あるいはＣ3Ｆ6等を挙げる
ことができる。放射線としては、電離作用を有するもの
であることが好ましく、具体的には、電子線、γ線、Ｘ
線、中性子線あるいは高エネルギーイオン等が挙げられ
る。A specific example of the fluorine compound is C
LF 3 , BrF 3 , SF 4 , CF 3 COCF 3 , CF 3 CH
Examples thereof include O, CF 4 , NF 3 , SiF 4 and C 3 F 6 . The radiation preferably has an ionizing action, and specifically, electron beams, γ rays, X
Ray, neutron ray or high energy ion.
【００２１】本発明による塗装用ふっ素樹脂組成物を使
用する際の形態としては、粉体、溶液あるいは分散液の
いずれでもよく、また、その塗膜形成手段としては、粉
体の場合が静電粉体塗装法あるいは流動浸漬法等を挙げ
ることができ、一方、溶液あるいは分散液の場合がスプ
レー塗装法あるいは静電塗装法等を挙げることができ
る。The fluororesin composition for coating according to the present invention may be used in the form of powder, solution or dispersion, and its coating film forming means is electrostatic in the case of powder. A powder coating method or a fluidized dipping method can be mentioned, while a spray coating method or an electrostatic coating method can be mentioned in the case of a solution or dispersion.
【００２２】なお、本発明の塗装用ふっ素樹脂組成物に
よる塗膜形成の対象としては、複写機、プリンタ、ファ
クシミリ等の電子写真方式を利用した画像形成装置の定
着ローラを含めた熱定着装置、または搬送ベルト、ある
いは回転伝達用ベルト等が挙げられる。The target of the coating film formation by the coating fluororesin composition of the present invention is a heat fixing device including a fixing roller of an image forming apparatus using an electrophotographic system such as a copying machine, a printer and a facsimile. Alternatively, a conveyor belt, a rotation transmission belt, or the like may be used.
【００２３】[0023]
【発明の実施の形態】次に、本発明による塗装用ふっ素
樹脂組成物の実施の形態を説明する。図１は、この実施
の形態において塗膜形成の対象とされた定着ローラの構
成を示し、ローラ状の金属心体１上にゴム被覆２と塗膜
３を形成した構成を有する。以下、表１および表３に基
づいて、各実施例および比較例の実施内容を説明する。BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of the fluororesin composition for coating according to the present invention will be described. FIG. 1 shows the structure of a fixing roller which is the object of coating film formation in this embodiment, and has a structure in which a rubber coating 2 and a coating film 3 are formed on a roller-shaped metal core body 1. The contents of implementation of each example and comparative example will be described below based on Tables 1 and 3.
【００２４】[0024]
【表１】 [Table 1]
【００２５】[0025]
【表２】 [Table 2]
【００２６】[0026]
【実施例１】酸素濃度０．１ｔｏｒｒ、樹脂温度３４０
℃および照射線量１００ｋＧｙの条件下でＰＴＦＥ粉末
に電子線を照射することにより改質ＰＴＦＥ粉末（日立
電線商品名ＸＦＯ）を得た後、この粉末の２５容量％を
７５容量％の母材ＦＥＰ粉末と混合し、所定の塗装用ふ
っ素樹脂組成物を調合した。[Example 1] Oxygen concentration 0.1 torr, resin temperature 340
After obtaining a modified PTFE powder (Hitachi Cable Trade Name XFO) by irradiating the PTFE powder with an electron beam under the conditions of ° C and an irradiation dose of 100 kGy, 25% by volume of this powder is used as a base material FEP powder of 75% by volume. And a predetermined fluororesin composition for coating was prepared.
【００２７】次に、この塗装用組成物を図１のローラの
ゴム被覆２上に静電粉体塗装法によつて塗装した後、こ
れを３００℃の温度で６０分間焼成することにより塗膜
３を形成し、次いで、形成した塗膜３を６０μｍの厚さ
となるように研磨加工することによって所定の定着ロー
ラを製造した。Next, this coating composition is applied onto the rubber coating 2 of the roller of FIG. 1 by the electrostatic powder coating method, and then the coating composition is baked at a temperature of 300 ° C. for 60 minutes to form a coating film. 3 was formed, and then the formed coating film 3 was polished to have a thickness of 60 μm, whereby a predetermined fixing roller was manufactured.
【００２８】[0028]
【実施例２〜１２】表１に示される母材ふっ素樹脂の粉
末を表１に示される割合に基づいてＸＦＯと混合するこ
とによって実施例２〜１２の塗装用ふっ素樹脂組成物を
調合し、さらに、焼成温度を表１に示される実施例２〜
１２の条件に設定するとともに、他の条件を実施例１と
同じに設定することによってそれぞれ所定の定着ローラ
を製造した。Examples 2 to 12 The coating fluororesin compositions of Examples 2 to 12 were prepared by mixing powder of the base fluororesin shown in Table 1 with XFO based on the proportions shown in Table 1, Further, the firing temperature is shown in Table 1 in Examples 2 to 2.
The predetermined fixing rollers were manufactured by setting the conditions to 12 and setting the other conditions to be the same as in Example 1.
【００２９】[0029]
【比較例１〜１５】表２に示される母材ふっ素樹脂の粉
末を表２に示される比率に基づいてＸＦＯと混合し、あ
るいは混合せずに比較例１〜１５の塗装用ふっ素樹脂組
成物を調合し、さらに、焼成温度を表２に示される比較
例１〜１５の条件に設定するとともに、他の条件を実施
例１と同じに設定することによってそれぞれ所定の定着
ローラを製造した。[Comparative Examples 1 to 15] Base fluorocarbon resin powders shown in Table 2 were mixed with or without XFO based on the ratio shown in Table 2, or the coating fluororesin compositions of Comparative Examples 1 to 15 were mixed. And the firing temperature was set to the conditions of Comparative Examples 1 to 15 shown in Table 2, and the other conditions were set to be the same as in Example 1 to manufacture predetermined fixing rollers.
【００３０】表１および表２に示される特性の項は、以
上により得られた各例の定着ローラに対する試験結果を
まとめたものである。なお、両表において、表面粗さ
は、形成された塗膜３の粗さを示し、ゴム割れは、塗膜
３を焼成した際の熱劣化作用によるゴム被覆２への割れ
発生の有無を示す。The characteristic items shown in Tables 1 and 2 summarize the test results for the fixing roller of each example obtained as described above. In both tables, the surface roughness indicates the roughness of the formed coating film 3, and the rubber crack indicates whether or not cracks were generated in the rubber coating 2 due to the thermal deterioration effect when the coating film 3 was fired. .
【００３１】また、相対摩耗量と離型性は、得られた定
着ローラをレーザビームプリンタの定着機構に装着し、
トナー（離型剤を乳化重合によりポリエステルに分散さ
せた花王社製のカラートナー）を１．５〜１．６ｇ／ｃ
ｍ2となるように用紙に付着させるとともに、定着ロー
ラの表面温度を１３０〜１８０℃に設定して定着試験を
行ったときの試験結果である。The relative amount of wear and releasability are determined by mounting the obtained fixing roller on the fixing mechanism of the laser beam printer,
Toner (color toner manufactured by Kao Corporation in which a release agent is dispersed in polyester by emulsion polymerization) is 1.5 to 1.6 g / c.
The test results are obtained when the fixing test is carried out with the surface temperature of the fixing roller set to 130 to 180 ° C. while being attached to the paper so as to be m 2 .
【００３２】表１および表２によれば、実施例による定
着ローラが、いずれも、小さな表面粗さ、ゴム割れなし
の表面状態、低い相対摩耗量、および良好な離型性を示
しているのに比べ、比較例により得られた定着ローラ
は、これらのいずれかの特性において１つ以上の不足を
示しており、両者の間には明確な差が認められる。According to Tables 1 and 2, each of the fixing rollers according to the examples shows a small surface roughness, a surface state without rubber cracks, a low relative wear amount, and a good releasability. In comparison, the fixing roller obtained by the comparative example shows one or more deficiencies in any of these characteristics, and a clear difference is recognized between the two.
【００３３】これは、実施例が、３００℃以下の融点を
有する母材ふっ素樹脂に放射線で架橋された改質ふっ素
樹脂を混合することによって塗装材を構成しているとと
もに、塗装後の焼成温度をいずれも３００℃以下として
いるのに対し、比較例の場合には、これら２つの条件の
いずれかあるいは双方を欠いていることによる。In this example, the coating material is constructed by mixing the base material fluorocarbon resin having a melting point of 300 ° C. or lower with the radiation-crosslinked modified fluorocarbon resin, and the firing temperature after coating is set. However, in the case of the comparative example, either or both of these two conditions are lacking.
【００３４】即ち、比較例１、３および５の場合には、
改質ふっ素樹脂が配合されていないこと、また、比較例
７〜９の場合には、塗装後の焼成温度が３００℃を超え
ていること、そして、比較例１０〜１５の場合には、母
材を構成するふっ素樹脂が３００℃を超える融点を有
し、従って、その焼成温度も３００℃を超えている（比
較例１０、１１、１３および１５）か、あるいはＸＦＯ
の配合がなく焼成温度も高いこと（比較例１２、１４）
が、実施例との顕著な特性の違いとなって現れているも
のである。That is, in the case of Comparative Examples 1, 3 and 5,
No modified fluororesin was blended, and in the case of Comparative Examples 7 to 9, the firing temperature after coating exceeded 300 ° C., and in the case of Comparative Examples 10 to 15, the mother resin was used. The fluororesin constituting the material has a melting point of over 300 ° C., and therefore its firing temperature also exceeds 300 ° C. (Comparative Examples 10, 11, 13 and 15), or XFO.
Higher calcination temperature without blending (Comparative Examples 12 and 14)
However, it appears as a remarkable difference in characteristics from the example.
【００３５】なお、比較例２，４，６が前述した２つの
条件を満足しているにも拘わらず表面粗さおよび相対摩
耗量において比較的大きな値を示しているのは、母材と
改質ふっ素樹脂の混合物中に占める改質ふっ素樹脂の割
合が大きなためであり、従って、このことより、本発明
の実施に際しては、改質ふっ素樹脂の最大割合を既述の
ように５０容量％に設定することが好ましい。なお、好
ましい最小割合は、実施例７、９および１１に示される
ように、５容量％である。It should be noted that the comparative examples 2, 4 and 6 show comparatively large values of surface roughness and relative wear amount in spite of satisfying the above-mentioned two conditions. This is because the proportion of the modified fluororesin in the mixture of the quality fluororesins is large, and therefore, in the practice of the present invention, the maximum proportion of the modified fluororesin is 50% by volume as described above. It is preferable to set. The preferred minimum ratio is 5% by volume, as shown in Examples 7, 9 and 11.
【００３６】[0036]
【発明の効果】以上説明したように、本発明による塗装
用ふっ素樹脂組成物によれば、融点が３００℃以下の母
材ふっ素樹脂と放射線照射により架橋された改質ふっ素
樹脂との混合物によって組成を構成するとともに、３０
０℃以下の焼成温度によって特徴づけられているため、
優れた離型性と耐摩耗性を有する表面粗さの小さな塗膜
を形成することができ、さらに、塗膜を形成するとき、
塗装対象物への劣化作用の少ない塗装用ふっ素樹脂組成
物を提供することができる。As described above, the coating fluororesin composition according to the present invention comprises a mixture of a base fluororesin having a melting point of 300 ° C. or lower and a modified fluororesin crosslinked by irradiation. And configure 30
Because it is characterized by a firing temperature below 0 ° C,
It is possible to form a coating film with a small surface roughness that has excellent mold releasability and wear resistance. Furthermore, when forming a coating film,
It is possible to provide a fluororesin composition for coating, which has less deterioration effect on an object to be coated.
【図１】本発明の実施の形態により得られた塗装用ふっ
素樹脂組成物を使用した定着ローラの構成を示す説明図
であり、（ａ）は斜視図、（ｂ）は（ａ）のＡ−Ａ断面
図を示す。FIG. 1 is an explanatory view showing a constitution of a fixing roller using a fluororesin composition for coating obtained according to an embodiment of the present invention, (a) is a perspective view, and (b) is A of (a). -A sectional drawing is shown.
１ 金属心体 ２ ゴム被覆 ３ 塗膜 1 metal core 2 rubber coating 3 paint film
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｃ０９Ｄ 129/10 Ｃ０９Ｄ 129/10 // Ｃ０８Ｌ 27:12 Ｃ０８Ｌ 27:12 Ｆターム(参考） 4F070 AA23 HA01 HB02 HB04 4J038 CB011 CD121 CD131 CE051 PA17 ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 7 Identification code FI theme code (reference) C09D 129/10 C09D 129/10 // C08L 27:12 C08L 27:12 F term (reference) 4F070 AA23 HA01 HB02 HB04 4J038 CB011 CD121 CD131 CE051 PA17
Claims (6)
されることによって所定の塗膜を形成する塗装用ふっ素
樹脂組成物において、 融点が３００℃以下の母材ふっ素樹脂と、放射線の照射
により分子間を架橋された改質ふっ素樹脂の混合物より
なり、かつ、前記焼成処理のための温度が３００℃以下
であることを特徴とする塗装用ふっ素樹脂組成物。1. A fluororesin composition for coating, which is applied to an object to be coated and then subjected to a baking treatment to form a predetermined coating film, wherein a base material fluororesin having a melting point of 300 ° C. or less, and radiation. A coating fluororesin composition comprising a mixture of modified fluororesin whose molecules are crosslinked by the irradiation of 1) and having a temperature of 300 ° C. or lower for the baking treatment.
０ｔｏｒｒ以下の酸素濃度および照射線量１ｋＧｙ〜１
０ＭＧｙの条件下で放射線を照射されたものであること
を特徴とする請求項１項記載の塗装用ふっ素樹脂組成
物。2. The modified fluororesin has a melting point not lower than 1
Oxygen concentration below 0 torr and irradiation dose 1 kGy to 1
The coating fluorine resin composition according to claim 1, which is irradiated with radiation under a condition of 0 MGy.
チレン−パーフルオロメチルビニルエーテル共重合樹
脂、テトラフルオロエチレン−ヘキサフルオロプロピレ
ン共重合樹脂およびエチレン−テトラフルオロエチレン
共重合樹脂より選択される少なくとも１種のふっ素樹脂
であることを特徴とする請求項１項記載の塗装用ふっ素
樹脂組成物。3. The base material fluororesin is at least one selected from tetrafluoroethylene-perfluoromethyl vinyl ether copolymer resin, tetrafluoroethylene-hexafluoropropylene copolymer resin and ethylene-tetrafluoroethylene copolymer resin. The fluororesin composition for coating according to claim 1, which is a fluororesin of
ロエチレン、テトラフルオロエチレン−パーフルオロア
ルキルビニルエーテル共重合樹脂、エチレン−テトラフ
ルオロエチレン共重合樹脂およびテトラフルオロエチレ
ン−ヘキサフルオロプロピレン共重合樹脂より選択され
る少なくとも１種のふっ素樹脂であることを特徴とする
請求項１項記載の塗装用ふっ素樹脂組成物。4. The modified fluororesin is selected from polytetrafluoroethylene, tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer resin, ethylene-tetrafluoroethylene copolymer resin and tetrafluoroethylene-hexafluoropropylene copolymer resin. The fluororesin composition for coating according to claim 1, wherein the fluororesin composition is at least one kind of fluororesin.
脂との合計量中に占める割合か５〜５０容量％であるこ
とを特徴とする請求項１項記載の塗装用ふっ素樹脂組成
物。5. The coating fluororesin composition according to claim 1, wherein the modified fluororesin accounts for 5 to 50% by volume of the total amount of the base fluororesin. .
時あるいは照射後において、水素、ふっ素およびふっ素
化合物より選択される少なくとも１種の改質剤と接触さ
せられたものであることを特徴とする請求項１項記載の
塗装用ふっ素樹脂組成物。6. The modified fluororesin is brought into contact with at least one modifier selected from hydrogen, fluorine and fluorine compounds during or after irradiation with the radiation. The fluororesin composition for coating according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002072779A JP2003268296A (en) | 2002-03-15 | 2002-03-15 | Fluororesin composition for painting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002072779A JP2003268296A (en) | 2002-03-15 | 2002-03-15 | Fluororesin composition for painting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003268296A true JP2003268296A (en) | 2003-09-25 |
Family
ID=29202678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002072779A Pending JP2003268296A (en) | 2002-03-15 | 2002-03-15 | Fluororesin composition for painting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003268296A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180131257A1 (en) * | 2012-09-21 | 2018-05-10 | Asmo Co., Ltd. | Commutator |
-
2002
- 2002-03-15 JP JP2002072779A patent/JP2003268296A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180131257A1 (en) * | 2012-09-21 | 2018-05-10 | Asmo Co., Ltd. | Commutator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5035950A (en) | Fluoroelastomer coated fuser roll | |
| US5709949A (en) | Coated fuser members and methods of making coated fuser members | |
| DE69417154T2 (en) | Low surface energy material | |
| US5534347A (en) | Fusing roll having a fluorocarbon-silicone barrier layer | |
| US20020102374A1 (en) | Crosslinking of fluoropolymers with polyfunctional siloxanes for release enhancement | |
| DE69732973T2 (en) | COATED DISPOSABLE ELEMENTS AND METHOD FOR PRODUCING COATED FILM ELEMENTS | |
| US6146751A (en) | Fuser member with vinyl and hydride containing silane adhesive layer | |
| US5753317A (en) | Electrically conductive processes | |
| JPH10142990A (en) | Fixing roller | |
| EP1227128B1 (en) | Fuser system member comprising chlorofluoro elastomer compositions | |
| JP2008176293A (en) | Fixing member, manufacturing method thereof, fixing device using the same, and electrophotographic image forming apparatus | |
| US5795500A (en) | Electrically conductive coatings comprising fluorinated carbon filled fluoroelastomer | |
| US6297302B1 (en) | Stabilized fluorosilicone materials | |
| JPH06250553A (en) | Roll | |
| DE60113220T2 (en) | Process for producing a multilayer elastomeric coating | |
| JP2003268296A (en) | Fluororesin composition for painting | |
| EP0332438B1 (en) | Fuser member | |
| JP3927785B2 (en) | Roller, heat fixing device using the same, and method for producing electrophotographic roller | |
| EP1727003B1 (en) | Process for producing a fuser member coating using a fluoroelastomer and a blend of a fluorinated surfactant and a fluorinated polydimethylsiloxane | |
| JP2001056618A (en) | Formation of elastomer surface | |
| JP4983153B2 (en) | Fluorine-containing resin aqueous dispersion | |
| JP2005031618A (en) | Melting station and method for depositing toner image | |
| JP2000321912A (en) | Fixing roller using composite material | |
| JP3340285B2 (en) | Method for modifying peroxide-crosslinked fluororubber | |
| JPH08502081A (en) | Metal oxide-free fluoroelastomer composition and fusion member containing the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20040423 |
|
| A977 | Report on retrieval |
Effective date: 20060915 Free format text: JAPANESE INTERMEDIATE CODE: A971007 |
|
| A131 | Notification of reasons for refusal |
Effective date: 20060926 Free format text: JAPANESE INTERMEDIATE CODE: A131 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20061124 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20070116 |