JPH03100059A - Addition reaction-type silicone rubber composition, and molding, elastic rotating body and fixing apparatus formed from same composition - Google Patents
Addition reaction-type silicone rubber composition, and molding, elastic rotating body and fixing apparatus formed from same compositionInfo
- Publication number
- JPH03100059A JPH03100059A JP23897289A JP23897289A JPH03100059A JP H03100059 A JPH03100059 A JP H03100059A JP 23897289 A JP23897289 A JP 23897289A JP 23897289 A JP23897289 A JP 23897289A JP H03100059 A JPH03100059 A JP H03100059A
- Authority
- JP
- Japan
- Prior art keywords
- silicone rubber
- rubber composition
- addition reaction
- weight
- type silicone
- 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 46
- 229920002379 silicone rubber Polymers 0.000 title claims description 34
- 239000004945 silicone rubber Substances 0.000 title claims description 25
- 238000006757 chemical reactions by type Methods 0.000 title 1
- 238000000465 moulding Methods 0.000 title 1
- 239000007788 liquid Substances 0.000 claims abstract description 48
- 239000000126 substance Substances 0.000 claims abstract description 23
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 19
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims abstract description 11
- -1 polysiloxane Polymers 0.000 claims description 27
- 239000010419 fine particle Substances 0.000 claims description 25
- 238000007259 addition reaction Methods 0.000 claims description 19
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 11
- 229910052697 platinum Inorganic materials 0.000 claims description 9
- 239000002344 surface layer Substances 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 3
- 239000013013 elastic material Substances 0.000 claims 1
- 239000002245 particle Substances 0.000 abstract description 7
- 230000003068 static effect Effects 0.000 abstract description 7
- 238000002156 mixing Methods 0.000 abstract description 5
- 239000011148 porous material Substances 0.000 abstract description 5
- 230000005611 electricity Effects 0.000 abstract description 3
- 239000004005 microsphere Substances 0.000 abstract description 3
- 239000010954 inorganic particle Substances 0.000 abstract 2
- 229920006136 organohydrogenpolysiloxane Polymers 0.000 abstract 2
- 150000003058 platinum compounds Chemical class 0.000 abstract 2
- 206010039509 Scab Diseases 0.000 abstract 1
- 239000000945 filler Substances 0.000 abstract 1
- 238000010068 moulding (rubber) Methods 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 24
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- 229920001577 copolymer Polymers 0.000 description 12
- 239000000843 powder Substances 0.000 description 12
- 229910052751 metal Inorganic materials 0.000 description 11
- 239000002184 metal Substances 0.000 description 11
- 230000000694 effects Effects 0.000 description 10
- 229920001971 elastomer Polymers 0.000 description 10
- 239000004094 surface-active agent Substances 0.000 description 10
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 9
- 229910052731 fluorine Inorganic materials 0.000 description 9
- 239000011737 fluorine Substances 0.000 description 9
- 239000000377 silicon dioxide Substances 0.000 description 9
- 239000010410 layer Substances 0.000 description 7
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 7
- 239000004944 Liquid Silicone Rubber Substances 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 6
- 239000003054 catalyst Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- 239000000378 calcium silicate Substances 0.000 description 4
- 229910052918 calcium silicate Inorganic materials 0.000 description 4
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 125000005010 perfluoroalkyl group Chemical group 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 239000004721 Polyphenylene oxide Substances 0.000 description 3
- 239000012295 chemical reaction liquid Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 229920005645 diorganopolysiloxane polymer Polymers 0.000 description 3
- 230000008030 elimination Effects 0.000 description 3
- 238000003379 elimination reaction Methods 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229920000570 polyether Polymers 0.000 description 3
- 239000010453 quartz Substances 0.000 description 3
- 235000012239 silicon dioxide Nutrition 0.000 description 3
- 230000037303 wrinkles Effects 0.000 description 3
- LOUICXNAWQPGSU-UHFFFAOYSA-N 2,2,3,3-tetrafluorooxirane Chemical class FC1(F)OC1(F)F LOUICXNAWQPGSU-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000004205 dimethyl polysiloxane Substances 0.000 description 2
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 2
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 235000021317 phosphate Nutrition 0.000 description 2
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000005909 Kieselgur Substances 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 238000010073 coating (rubber) Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 125000005388 dimethylhydrogensiloxy group Chemical group 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 239000010436 fluorite Substances 0.000 description 1
- 239000005350 fused silica glass Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 125000001165 hydrophobic group Chemical group 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 238000010406 interfacial reaction Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 239000003094 microcapsule Substances 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 125000004368 propenyl group Chemical group C(=CC)* 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052917 strontium silicate Inorganic materials 0.000 description 1
- QSQXISIULMTHLV-UHFFFAOYSA-N strontium;dioxido(oxo)silane Chemical compound [Sr+2].[O-][Si]([O-])=O QSQXISIULMTHLV-UHFFFAOYSA-N 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 125000000725 trifluoropropyl group Chemical group [H]C([H])(*)C([H])([H])C(F)(F)F 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Landscapes
- Fixing For Electrophotography (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、シリコーンゴム組成物、該組成物から形成さ
れた成形物、並びに該組成物から形成された表面層を有
する弾性体を具備している弾性回転体及び該弾性回転体
を有する定着装置に関する。Detailed Description of the Invention [Industrial Application Field] The present invention comprises a silicone rubber composition, a molded article formed from the composition, and an elastic body having a surface layer formed from the composition. The present invention relates to an elastic rotating body and a fixing device having the elastic rotating body.
電子複写装置等の画像形成装置において、普通紙等のシ
ート状転写材または記録材を所定の経路に沿って搬送す
る搬送ローラには、一般に搬送性、離型性ならびに耐久
性が要求される。2. Description of the Related Art In image forming apparatuses such as electronic copying machines, a conveyance roller that conveys a sheet-like transfer material or recording material such as plain paper along a predetermined path is generally required to have good conveyance performance, releasability, and durability.
特に、転写紙上の未定着トナー像に加圧条件下で熱を付
与し、かつ半溶融又は溶融トナーのオフセット現象を防
止しながら該転写紙を所定経路へと搬送しなければなら
ない定着ローラ及び加圧ローラを具備する定着装置には
、より厳しい条件下での搬送性、離型性、耐摩耗性、定
着性及び耐久性が要求される。In particular, fixing rollers and heat rollers that must apply heat under pressure to the unfixed toner image on the transfer paper and convey the transfer paper to a predetermined path while preventing the offset phenomenon of semi-melted or molten toner. A fixing device equipped with a pressure roller is required to have conveyance properties, release properties, abrasion resistance, fixing properties, and durability under more severe conditions.
従来、この種の定着装置は、定着ローラとこれに加圧接
触して従動回転する加圧ローラを少なくとも有する。定
着ローラは、例えばアルミニウム。Conventionally, this type of fixing device has at least a fixing roller and a pressure roller that is in pressure contact with the fixing roller and rotates as a result of the fixing roller. The fixing roller is made of aluminum, for example.
鉄等の中空の芯金の上にポリテトラフルオロエチレン、
テトラフルオロエチレン−フロロアルコキシエチレン共
重合体の如き、フッ素系樹脂あるいはシリコーンゴム等
の離型性の良い材料の層が被覆形成されである。また、
定着ローラの中には、必要に応じてハロゲンランプ等の
ヒータが備えられており、定着ローラの表面を定着に好
適な特定の温度まで昇温せしめている。また、多(の場
合、センサを用いて上記定着ローラの表面温度は常時設
定された温度となるように制御を受けている。さらに、
定着ローラの外周面には、オフセットしたトナーや紙粉
を除去するためのクリーナや、像担持材の定着ローラへ
の巻付きを防ぐための分離爪が設けられている場合もあ
る。Polytetrafluoroethylene is placed on a hollow core made of iron, etc.
A layer of a material with good mold releasability such as a fluororesin such as a tetrafluoroethylene-fluoroalkoxyethylene copolymer or a silicone rubber is formed as a coating. Also,
The fixing roller is provided with a heater such as a halogen lamp, if necessary, to raise the temperature of the surface of the fixing roller to a specific temperature suitable for fixing. In addition, in the case of multiplexing, the surface temperature of the fixing roller is controlled using a sensor so that it always remains at a set temperature.Furthermore,
The outer peripheral surface of the fixing roller may be provided with a cleaner for removing offset toner and paper dust, and a separation claw for preventing the image bearing material from being wrapped around the fixing roller.
一方、加圧ローラは、鉄やステンレス鋼等の芯金の上に
シリコーンゴム等の離型性を有する弾性体層が被覆され
ている。そして、加圧ローラは、バネ等によって定着ロ
ーラへ加圧されている。On the other hand, in the pressure roller, a core metal such as iron or stainless steel is coated with an elastic layer having release properties such as silicone rubber. The pressure roller is pressed against the fixing roller by a spring or the like.
かくして、未定着トナー像を持つ像担持材は上記定着ロ
ーラと加圧ローラとによる加熱加圧下において挾持搬送
されることにより上記未定着)・ナー像が加圧定着され
る。In this way, the image bearing material having the unfixed toner image is held and conveyed under heat and pressure by the fixing roller and the pressure roller, whereby the unfixed toner image is fixed under pressure.
上記従来装置では、通紙時に加圧ローラが摩擦帯電によ
って、例えば2KV以上に帯電してしまい、そのために
紙が加圧ローラに巻き付いてしまうという問題があった
。また、加圧ローラの電界によって、未定着のトナーが
飛び散りライン像を滲ませたり、トナーが定着ローラ表
面へ付着してオフセットが多くなるという問題もあった
。In the above-mentioned conventional apparatus, there was a problem in that the pressure roller was charged to, for example, 2 KV or more due to frictional electrification when paper was passed through the paper, and as a result, the paper wound around the pressure roller. Further, due to the electric field of the pressure roller, unfixed toner scatters and blurs the line image, and toner adheres to the surface of the fixing roller, resulting in increased offset.
上記問題の対策として、従来は加圧ローラに除電ブラシ
を当接させて接地除電を行っていた。しかしこの方策で
も1〜2KV程度にしか電位が下がらず、除電効果に限
界があり充分とは言えず、その改善が望まれていた。As a countermeasure to the above-mentioned problem, conventionally, a static elimination brush was brought into contact with the pressure roller to eliminate static electricity by grounding. However, even with this measure, the potential drops only to about 1 to 2 KV, and the static elimination effect is limited and cannot be said to be sufficient, and an improvement has been desired.
また、定着ローラ表面をクリーニングするクリーニング
手段を有していない定着装置の場合、加圧ローラ表面の
帯電が大きいと定着ローラ表面へのトナーの付着量が増
加し、該トナーは紙の如き転写材または加圧ローラ表面
に移行するため、オフセットの如き画像不良、ローラ表
面のトナー付着汚れ等の問題を生じ易かった。In addition, in the case of a fixing device that does not have a cleaning means for cleaning the surface of the fixing roller, if the surface of the pressure roller is highly charged, the amount of toner adhering to the surface of the fixing roller increases, and the toner is transferred to a transfer material such as paper. Alternatively, since the toner is transferred to the pressure roller surface, problems such as image defects such as offset and toner adhesion stains on the roller surface are likely to occur.
〔課題を解決するための手段及び作用〕本発明は、帯電
を防止もしくは抑制し得る液状物質を包含担持した無機
質中空球状多孔質微粒子(多孔質無機質壁を有する無機
マイクロカプセル)を付加反応型シリコーンゴム組成物
に含有せしめることによりゴム成形物の帯電を防止もし
くは抑制することを可能としたものである。[Means and effects for solving the problems] The present invention provides addition-reactive silicone inorganic hollow spherical porous fine particles (inorganic microcapsules having a porous inorganic wall) containing and carrying a liquid substance capable of preventing or suppressing electrification. By incorporating it into a rubber composition, it is possible to prevent or suppress charging of a rubber molded article.
本発明のシリコーンゴム組成物を構成するポリもので、
R1+ R2はメチル基、エチル基などのアルキル基
、フェニル基などのアリール基、トリフルオロプロピル
基などのポリフルオロアルキル基などである。A polyester material constituting the silicone rubber composition of the present invention,
R1+R2 is an alkyl group such as a methyl group or an ethyl group, an aryl group such as a phenyl group, or a polyfluoroalkyl group such as a trifluoropropyl group.
本発明は、
(A)1分子中に少なくとも2個のケイ素結合不飽和基
を有するオルガノポリシロキサン100重量部、(B)
1分子中に少なくとも3個のケイ素結合水素原子を有す
るオルガノハイドロジエンポリシロキサ78重量部〔但
し、8重量部は、オルガノハイドロジエンポリシロキサ
ン中のケイ素原子結合水素原子の合計量と(A)成分中
の全不飽和基のモル数が0.5/1から20/1となる
ような量である〕、(C)帯電を防止もしくは抑制し得
る液状物質を包含担持した無機質中空球状多孔質微粒子
0.1〜40重量部、及び
(D)白金系化合物0 、1〜500 p p mを含
有するシリコーンゴム組成物である。The present invention comprises: (A) 100 parts by weight of an organopolysiloxane having at least two silicon-bonded unsaturated groups in one molecule; (B)
78 parts by weight of an organohydrodiene polysiloxane having at least 3 silicon-bonded hydrogen atoms in one molecule [However, 8 parts by weight is the total amount of silicon-bonded hydrogen atoms in the organohydrodiene polysiloxane and (A) The amount is such that the number of moles of all unsaturated groups in the components is from 0.5/1 to 20/1], (C) an inorganic hollow spherical porous material containing and supporting a liquid substance that can prevent or suppress electrification. This is a silicone rubber composition containing 0.1 to 40 parts by weight of fine particles and 0.1 to 500 ppm of (D) a platinum-based compound.
本発明に用いられる(A)成分のオルガノポリシロキサ
ンは、本発明組成物の主成分であり、(D)成分の触媒
作用によって(B)成分と付加反応し硬化する。(A)
成分は、1分子中に少なくとも2個のケイ素結合不飽和
基を有するオルガノポリシロキサンであり、かかる不飽
和基としては、ビニル基、アリル基、プロペニル基が例
示される。該不飽和基は成分中のどこに存在しても良い
が、少なくとも分子末端に存在することが好ましい。The organopolysiloxane (A) component used in the present invention is the main component of the composition of the present invention, and is cured by addition reaction with the (B) component by the catalytic action of the (D) component. (A)
The component is an organopolysiloxane having at least two silicon-bonded unsaturated groups in one molecule, such unsaturated groups being exemplified by vinyl, allyl, and propenyl groups. The unsaturated group may be present anywhere in the component, but is preferably present at least at the terminal of the molecule.
さらに本成分の分子構造は直鎖状、分枝を含む直鎖状、
環状、網目状のいずれであっても良い。本成分の分子量
は特に限定されるものでな(、粘度の低い液状から非常
に粘度の高い生ゴム状まで包含されるが硬化物がゴム状
弾性体となるに゛は25℃の粘度が100センチポイズ
以上であることが好ましい。このようなオルガノポリシ
ロキサンとしては、メチルビニルポリシロキサン、メチ
ルビニルシロキサンとジメチルシロキサンの共重合体、
両末端ジメチルビニルシロキサン基封鎖のジメチルポリ
シロキサン、両末端ジメチルビニルシロキサン基封鎖の
ジメチルシロキサン−メチルフェニルシロキサン共重合
体、両末端ジメチルビニルシロキサン基封鎖のジメチル
シロキサン−ジフェニルシロキサン−メチルビニルシロ
キサン共重合体、両末端トリメチルシロキシ基封鎖のジ
メチルシロキサン−メチルビニルシロキサン共重合体、
両末端トリメチルシロキシ基封鎖のジメチルシロキサン
−メチルフェニルシロキサン−メチルビニルシロキシ共
重合体、両末端ジメチルビニルシロキサン基封鎖のメチ
ル(3,3,3−1−リフロロプロピル)ポリシロキサ
ン、両末端ジメチルビニルシロキシ基封鎖のジメチルシ
ロキサン−メチル(3,3゜3−トリフロロプロピル)
シロキサン共重合体、CH2=CH(CH2)25i0
272単位と(CH2)2S i O2/2単位とS
i 0./2単位からなるポリシロキサンが例示される
。本発明においては上記オルガノポリシロキサンを組合
せて使用してもよい。Furthermore, the molecular structure of this component is linear, linear with branches,
It may be either ring-shaped or mesh-shaped. The molecular weight of this component is not particularly limited (it can range from a low viscosity liquid to a very high viscosity raw rubber, but the viscosity at 25°C must be 100 centipoise for the cured product to become a rubber-like elastic body). The above is preferable.Such organopolysiloxanes include methylvinylpolysiloxane, copolymers of methylvinylsiloxane and dimethylsiloxane,
Dimethylpolysiloxane with dimethylvinylsiloxane groups blocked at both ends, dimethylsiloxane-methylphenylsiloxane copolymer with dimethylvinylsiloxane groups blocked at both ends, dimethylsiloxane-diphenylsiloxane-methylvinylsiloxane copolymer with dimethylvinylsiloxane groups blocked at both ends , dimethylsiloxane-methylvinylsiloxane copolymer with both ends blocked by trimethylsiloxy groups,
Dimethylsiloxane-methylphenylsiloxane-methylvinylsiloxy copolymer with trimethylsiloxy groups blocked at both ends, methyl(3,3,3-1-lifluoropropyl)polysiloxane blocked with dimethylvinylsiloxane groups at both ends, dimethylvinyl at both ends Siloxy-blocked dimethylsiloxane-methyl (3,3°3-trifluoropropyl)
Siloxane copolymer, CH2=CH(CH2)25i0
272 units and (CH2)2S i O2/2 units and S
i0. A polysiloxane consisting of /2 units is exemplified. In the present invention, the above organopolysiloxanes may be used in combination.
(B)成分のオルガノハイドロジエンポリシロキサンは
(A)成分の架橋剤であり、(D)成分の触媒作用によ
り本成分のケイ素原子結合水素原子が(A)成分中の不
飽和基と付加反応して硬化するものである。この(B)
成分は1分子中に少なくとも3個のケイ素原子結合水素
原子を有する。本成分の分子構造については、特に限定
されるものでない。The organohydrodiene polysiloxane of component (B) is a crosslinking agent of component (A), and the silicon-bonded hydrogen atom of this component undergoes an addition reaction with the unsaturated group in component (A) due to the catalytic action of component (D). It hardens. This (B)
The component has at least three silicon-bonded hydrogen atoms in one molecule. The molecular structure of this component is not particularly limited.
本成分の分子量も特に限定されないが(A)成分との相
溶性を良好にするために25℃の粘度が1〜50.00
0センチポイズであることが望ましい。The molecular weight of this component is also not particularly limited, but in order to have good compatibility with component (A), the viscosity at 25°C is 1 to 50.00.
Preferably it is 0 centipoise.
本成分の添加量は、本成分中のケイ素原子結合水素原子
の合計量と(A)成分中の全不飽和基の合計量とのモル
比が0.5/l〜20/1となるような量が必要である
。該モル比が0.5/1より小さいと良好な硬化性が得
に< < 20/1より大き(なると硬化物を加熱した
ときに硬度が太き(なる傾向にある。好ましくは該モル
比は0.5/1〜5/1である。The amount of this component added is such that the molar ratio between the total amount of silicon-bonded hydrogen atoms in this component and the total amount of all unsaturated groups in component (A) is 0.5/l to 20/1. A large amount is required. When the molar ratio is smaller than 0.5/1, good curability is obtained, especially when the molar ratio is larger than <<20/1, the hardness tends to increase when the cured product is heated. Preferably, the molar ratio is 0.5/1 to 5/1.
本成分のオルガノハイドロジエンポリシロキサンは両末
端トリメチルシロキシ基封鎖のメチルハイドロジエンポ
リシロキサン、両末端トリメチルシロキシ基封鎖のジメ
チルシロキサン−メチルハイドロジエンシロキサン共重
合体、両末端ジメチルハイドロジエンシロキシ基封鎖の
ジメチルシロキサン−メチルハイドロジエンシロキサン
共重合体、ジメチルシロキサン−メチルハイドロジエン
シロキサン環状共重合体、(CH3) 2 H3iO+
/2単位とS i O2/4単位からなる共重合体、(
CH3) 3 SiO+/2単位(CH3)2 H3i
O+/2単位およびS i 04/2単位からなる共重
合体が例示される。The organohydrodiene polysiloxane of this component is methylhydrodienepolysiloxane with both terminals blocked by trimethylsiloxy groups, dimethylsiloxane-methylhydrodienesiloxane copolymer with both terminals blocked with trimethylsiloxy groups, and dimethyl with both terminals blocked with dimethylhydrogensiloxy groups. Siloxane-methylhydrodienesiloxane copolymer, dimethylsiloxane-methylhydrodienesiloxane cyclic copolymer, (CH3) 2 H3iO+
Copolymer consisting of /2 units and S i O2/4 units, (
CH3) 3 SiO+/2 units (CH3)2 H3i
A copolymer consisting of O+/2 units and S i 04/2 units is exemplified.
(C)成分の帯電を防止もしくは抑制し得る液状物質を
包含担持した無機質中空球状多孔質微粒子において帯電
を防止もしくは抑制し得る液状物質は耐熱性を有するも
のであり、例えば弗素系の界面活性剤、側鎖にポリオキ
シアルキレン基を有するシリコーンポリエーテル共重合
体があげられる。In the inorganic hollow spherical porous fine particles containing and carrying a liquid substance capable of preventing or suppressing the charging of the component (C), the liquid substance capable of preventing or suppressing the charging is heat resistant, such as a fluorine-based surfactant. , a silicone polyether copolymer having a polyoxyalkylene group in its side chain.
弗素系の界面活性剤としてはパーフルオロアルキルエス
テル、パーフルオロアルキルポリオキシエチレンエタノ
ール、パーフルオロアルキルカルボン酸塩、パーフルオ
ロアルキルアンモニウム塩、パーフルオロアルキルベタ
イン、パーフルオロアルキルアミンオキサイド、パーフ
ルオロアルキルエチレンオキシド付加物、パーフルオロ
アルキルリン酸エステル、非解離性パーフルオロアルキ
ル化合物が挙げられる。特に、パーフルオロエチレンオ
キシド付加物が硬化阻害が少なく、除電効果が優れてい
るので好ましい。Examples of fluorine-based surfactants include perfluoroalkyl esters, perfluoroalkyl polyoxyethylene ethanol, perfluoroalkyl carboxylates, perfluoroalkyl ammonium salts, perfluoroalkyl betaines, perfluoroalkyl amine oxides, and perfluoroalkyl ethylene oxide additions. Examples include perfluoroalkyl phosphates, perfluoroalkyl phosphates, and non-dissociable perfluoroalkyl compounds. In particular, perfluoroethylene oxide adducts are preferred because they have little curing inhibition and are excellent in static elimination effects.
側鎖にポリオキシアルキレン基を有するシリコーンポリ
エーテル共重合体は、分子中のジメチルポリシロキサン
の部分を疎水基に、ポリエーテルの部分を親水基とした
非イオン系の界面活性剤構造を有し、一般式
%式%
(m≠0、n≠0、a、 bのうち少なくとも一方は
正の整数)
無機質中空球状多孔質微粒子としては粒子径が1〜20
0μmの中空微小球で球殻に直径が10〜400人の細
孔を有する。無機質中空球状多孔質微粒子は、特許第1
184016号(1983)記載の界面反応法により得
た。該中空微小球の球殻(壁)はシリカ(SiO2)ケ
イ酸カルシウム及びケイ酸ストロンチウムが破壊に対し
て強固であることから該無機化合物が好ましい。無機質
中空球状多孔質微粒子への帯電を防止もしくは抑制する
効果を有する液状物質の担持は以下の如く行われる。第
1図のガラス鐘内のフラスコに所定量の無機質中空球状
多孔質微粒子を入れ、10−”torrにて3〜4時間
真空排気する。真空状態を保持したままあらかじめ設置
されている足長分液漏斗から所定量の帯電を防止もしく
は抑制しつる液状物質を滴下、注入する。Silicone polyether copolymers with polyoxyalkylene groups in their side chains have a nonionic surfactant structure in which the dimethylpolysiloxane portion of the molecule is a hydrophobic group and the polyether portion is a hydrophilic group. , general formula % formula % (m≠0, n≠0, at least one of a and b is a positive integer) The inorganic hollow spherical porous fine particles have a particle size of 1 to 20.
Hollow microspheres with a diameter of 0 μm and pores with a diameter of 10 to 400 in the spherical shell. Inorganic hollow spherical porous fine particles are patented No. 1.
It was obtained by the interfacial reaction method described in No. 184016 (1983). The spherical shell (wall) of the hollow microspheres is preferably made of inorganic compounds such as silica (SiO2), calcium silicate, and strontium silicate, since these are strong against breakage. The liquid substance having the effect of preventing or suppressing charging of the inorganic hollow spherical porous fine particles is supported as follows. A predetermined amount of inorganic hollow spherical porous fine particles is placed in a flask inside a glass bell as shown in Figure 1, and the vacuum is evacuated at 10-''torr for 3 to 4 hours.While maintaining the vacuum state, the length of the legs set in advance is A predetermined amount of a liquid substance that prevents or suppresses electrostatic buildup is dripped or injected from a liquid funnel.
全量を注入後1時間静置したのちガラス鐘内を大気圧に
もどし、目的の帯電を防止もしくは抑制する効果を有す
る液状物質含有無機質中空球状多孔質微粒子を得る。帯
電防止能を有する液状物質の該微粉体に対する含浸比率
は該微粉体100重量部に対して50重量部から600
重最部の範囲である。After injecting the entire amount and leaving it for one hour, the inside of the glass bell is returned to atmospheric pressure to obtain inorganic hollow spherical porous fine particles containing a liquid substance that has the desired effect of preventing or suppressing electrification. The impregnation ratio of the liquid substance having antistatic ability to the fine powder is from 50 parts by weight to 600 parts by weight per 100 parts by weight of the fine powder.
This is the heaviest range.
帯電を防止もしくは抑制し得る液状物質を包含担持した
無機質中空球状多孔質微粒子のシリコーンゴム組成物に
対する添加量は0.1〜30重量%の範囲で、好ましく
は0.1〜10重量%である。(A)成分100重量部
に対しては0.1〜40重量部である。The amount of the inorganic hollow spherical porous fine particles containing and supporting a liquid substance capable of preventing or suppressing electrification added to the silicone rubber composition is in the range of 0.1 to 30% by weight, preferably 0.1 to 10% by weight. . The amount is 0.1 to 40 parts by weight per 100 parts by weight of component (A).
(D)成分のケイ素原子結合原子と不飽和基とを付加反
応させる触媒であり、例えば塩化白金酸およびそれをア
ルコールやケトン類に溶解させたものおよびその溶液を
熟成させたもの、塩化白金酸の錯化合物、白金黒および
白金を担体に保持させたものなどが挙げられる。(D) A catalyst that carries out an addition reaction between the silicon-bonded atom and the unsaturated group, such as chloroplatinic acid, a solution of it in alcohol or ketones, and an aged solution of chloroplatinic acid. complex compounds, platinum black, and those in which platinum is supported on a carrier.
本成分の添加量は、(A)成分と(B)成分の合計[1
00重量部に対して白金系金属として0.1〜1100
0ppとされるが、これは0.1〜11000pp未満
では架橋反応が十分進行せず、11000ppを越える
と不経済であるからである。通常使用される場合には白
金系金属として1〜1100pp程度の添加量が好まし
い。The amount of this component added is the total of component (A) and component (B) [1
0.1 to 1100 as platinum-based metal per 00 parts by weight
This is because the crosslinking reaction does not proceed sufficiently when the amount is less than 0.1 to 11,000 pp, and it is uneconomical when it exceeds 11,000 pp. When normally used, the amount of platinum-based metal added is preferably about 1 to 1100 pp.
本発明のシリコーンゴム組成物には、充填剤として微粉
末合成シリカ、石英粉末、溶融石英粉末、けいそう土、
炭酸カルシウムなどを添加しても良い。その他の添加剤
として、ベンガラの如き酸化鉄等の耐熱性向上剤、酸化
チタン、酸化亜鉛等の圧縮永久歪改良剤、低分子量シロ
キサンの如き分散剤を用いても良い。The silicone rubber composition of the present invention includes fine powder synthetic silica, quartz powder, fused quartz powder, diatomaceous earth,
Calcium carbonate or the like may be added. As other additives, heat resistance improvers such as iron oxide such as red iron oxide, compression set improvers such as titanium oxide and zinc oxide, and dispersants such as low molecular weight siloxane may be used.
本発明の弾性回転体は、帯電を防止もしくは抑制し得る
液状物質を包含担持した無機質中空球状多孔質微粒子を
含有したシリコーンゴム組成物から形成された弾性体を
具備するものである。本発明の定着装置は少なくとも一
対のローラ間に像担持材を挾持搬送させることにより像
担持材上に形成された未定着トナー像を加熱加圧定着す
るものである。The elastic rotating body of the present invention includes an elastic body formed from a silicone rubber composition containing inorganic hollow spherical porous fine particles that contain and support a liquid substance that can prevent or suppress electrification. The fixing device of the present invention fixes an unfixed toner image formed on the image carrier by heating and pressing the image carrier by sandwiching and conveying the image carrier between at least a pair of rollers.
以下、添付図面にもとづいて本発明の弾性回転体及び定
着装置の実施例を説明する。Embodiments of the elastic rotating body and fixing device of the present invention will be described below based on the accompanying drawings.
第2図は、本発明の弾性回転体を加圧ローラとして具備
している定着装置の概要構成を示す縦断面図を主に示す
図である。同図において、1は定着ローラで、該定着ロ
ーラlはアルミニウム、鉄、ステンレス鋼等の芯金2の
外表面にPFA、PTFE等の耐熱性及び離型性を有す
る樹脂層3が形成されている。FIG. 2 is a diagram mainly showing a vertical cross-sectional view showing a schematic configuration of a fixing device including the elastic rotating body of the present invention as a pressure roller. In the figure, reference numeral 1 denotes a fixing roller, and the fixing roller l has a heat-resistant and mold-releasing resin layer 3 made of PFA, PTFE, etc. formed on the outer surface of a core metal 2 made of aluminum, iron, stainless steel, etc. There is.
芯金2の内部にはヒータの如き加熱手段9が内包されて
いる。A heating means 9 such as a heater is included inside the core metal 2.
上記定着ローラlには、加圧ローラ4が図示せぬバネ等
によって圧せられて従動回転するようになっている。該
加圧ローラ4は、鉄、ステンレス等の芯金5の上に本発
明に係るシリコーンゴム組成物から形成された弾性体層
6が形成されている。A pressure roller 4 is pressed against the fixing roller l by a spring or the like (not shown) and rotates as a result. The pressure roller 4 has an elastic layer 6 made of a silicone rubber composition according to the present invention formed on a core metal 5 made of iron, stainless steel, or the like.
上記定着ローラlの周辺には、定着ローラ1の温度を検
出するサーミスタ8.定着ローラlに接触してその表面
を清掃するクリーナを具備しても良(、また、トナー像
10を有する普通紙の如き転写材11を定着ローラlと
加圧ローラ4の間に導くための入口ガイド12等が設け
られている。一方、加圧ローラ4の芯金5には、接地の
ための導通用板バネ13が接触している。Around the fixing roller 1, there is a thermistor 8 for detecting the temperature of the fixing roller 1. A cleaner may be provided for contacting the fixing roller l and cleaning its surface (and a cleaner for guiding the transfer material 11 such as plain paper having the toner image 10 between the fixing roller l and the pressure roller 4). An entrance guide 12 and the like are provided.On the other hand, a conductive leaf spring 13 for grounding is in contact with the core metal 5 of the pressure roller 4.
以下、部は重量部を意味する。 Hereinafter, parts mean parts by weight.
[実施例1] ビニル基含有ジオルガノポリシロキサン100部。[Example 1] 100 parts of vinyl group-containing diorganopolysiloxane.
乾式微粉末シリカ5部9石英粉末20部、ベンガラ1部
および白金系触媒から成る粘度900ポイズの付加反応
型液状シリコーンゴム組成物100部に、フッ素系界面
活性剤(三菱金属製エフトップ■EF122B)担持シ
リカ中空球状多孔質微粒子を1部部添加し、均一に撹拌
分散して得られた付加反応型液状シリコーンゴム組成物
をA液とした。100 parts of an addition-reactive liquid silicone rubber composition with a viscosity of 900 poise, consisting of 5 parts of dry finely powdered silica, 20 parts of quartz powder, 1 part of red iron and a platinum catalyst, are mixed with a fluorine-based surfactant (Mitsubishi Metals F-Top EF122B). ) Addition reaction type liquid silicone rubber composition obtained by adding one part of supported silica hollow spherical porous fine particles and uniformly stirring and dispersing the mixture was designated as Solution A.
ビニル基含有ジオルガノポリシロキサン及びケイ素結合
水素原子のモル数とケイ素結合ビニル基のモル数の比が
2/1となる量の活性水素基含有ジオルガノポリシロキ
サンとの混合物100部、乾式微粉末シリカ5部、石英
粉末20部、ベンガラ1部から成る粘度600ボイズの
付加反応型液状シリコーンゴム組成物100部に、A液
と同様に、フッ素系界面活性剤担持シリカ中空球状多孔
質微粒子を10部添加し、均一に撹拌分散して得られた
付加反応型液状シリコーンゴム組成物をB液とした。100 parts of a mixture of a vinyl group-containing diorganopolysiloxane and an active hydrogen group-containing diorganopolysiloxane in an amount such that the ratio of the number of moles of silicon-bonded hydrogen atoms to the number of moles of silicon-bonded vinyl groups is 2/1, dry fine powder Similar to Solution A, 10 parts of silica hollow spherical porous fine particles supporting a fluorosurfactant were added to 100 parts of an addition reaction type liquid silicone rubber composition with a viscosity of 600 voids consisting of 5 parts of silica, 20 parts of quartz powder, and 1 part of red iron. The addition reaction type liquid silicone rubber composition obtained by uniformly stirring and dispersing the mixture was designated as Liquid B.
A液とB液を重量比で100対100で混合し脱泡後、
150℃で10分間加熱することにより、該混合組成物
中のビニル基と、ケイ素結合水素とが白金触媒の存在下
において付加反応を開始し、該混合組成物は硬化せしめ
られゴム状弾性体となった。After mixing liquid A and liquid B at a weight ratio of 100:100 and defoaming,
By heating at 150° C. for 10 minutes, the vinyl groups in the mixed composition and silicon-bonded hydrogen start an addition reaction in the presence of a platinum catalyst, and the mixed composition is cured to form a rubber-like elastomer. became.
フッ素系界面活性剤を包含担持したシリカ中空球状多孔
質微粒子は以下の如く調製した。Silica hollow spherical porous fine particles containing and supporting a fluorosurfactant were prepared as follows.
平均粒径20μm、最頻細孔直径分布域が20〜100
人、比表面積200〜600 rrr/gのシリカ(S
in2)中空球状多孔質微粒子100gを第1図のガラ
ス鐘内のフラスコに入れ10−”torrにて4時間真
空排気した。真空状態を保持したままあらかじめ設置し
ておいた足長分液漏斗から100ccのフッ素系界面活
性剤三菱金属製エフトップ@EF122B (N−ポリ
オキシエチレン−N−アルキル−パーフルオロオクタン
スルフオン酸アミド)を滴下、注入した。全量を注入後
、1時間静置したのち、ガラス鐘内を大気圧にもどし、
目的の帯電防止能を有する液状物質(エフトップ■EF
122B)を包含担持した無機質中空球状多孔質微粒子
を得た。Average particle size 20μm, mode pore diameter distribution range 20-100
Silica (S) with a specific surface area of 200 to 600 rrr/g
in2) 100 g of hollow spherical porous fine particles were placed in the flask inside the glass bell shown in Figure 1 and evacuated for 4 hours at 10-''torr. 100 cc of a fluorine-based surfactant manufactured by Mitsubishi Metals F-Top@EF122B (N-polyoxyethylene-N-alkyl-perfluorooctane sulfonic acid amide) was dropped and injected.After injecting the entire amount, it was left to stand for 1 hour. , return the inside of the glass bell to atmospheric pressure,
A liquid substance with the desired antistatic ability (EFTOP EF
Inorganic hollow spherical porous fine particles containing and supporting 122B) were obtained.
[比較例1]
実施例1のA液において、フッ素系界面活性剤を包含担
持したシリカ中空球状多孔質微粒子を全く添加しない外
は、A液間様に粘度900ボイズの付加反応型液状シリ
コーンゴム組成物を調製し、C液とした。[Comparative Example 1] Addition reaction type liquid silicone rubber with a viscosity of 900 voids was used in Liquid A of Example 1, except that no hollow spherical porous particles of silica containing a fluorine-based surfactant were added. A composition was prepared and designated as Solution C.
また、実施例1のB液において、フッ素系界面活性剤を
包含担持したシリカ中空球状多孔質微粒子を全く添加し
たい外は、B液間様に粘度600ポイズの付加反応型液
状シリコーンゴム組成物を調製し、D液とした。In addition, in the B liquid of Example 1, an addition reaction type liquid silicone rubber composition with a viscosity of 600 poise was added as in the B liquid, except that the silica hollow spherical porous fine particles containing and supporting a fluorine-based surfactant were not added at all. This was prepared as Solution D.
C液とD液を重量比で100対100で均一に混合し、
脱泡した後、150℃で10分間加熱することにより、
該混合組成物中のビニル基とケイ素結合水素とが、白金
触媒存在下において付加反応を開始し、該混合組成物は
硬化せしめられゴム状弾性体となった。Mix liquid C and liquid D uniformly at a weight ratio of 100:100,
After defoaming, by heating at 150°C for 10 minutes,
The vinyl groups and silicon-bonded hydrogen in the mixed composition started an addition reaction in the presence of a platinum catalyst, and the mixed composition was cured into a rubber-like elastic body.
[比較例2]
実施例1のA液においてフッ素系界面活性剤を担持した
微小細孔を有する多孔性無機微粉体を6部添加しA液間
様に粘度600ボイズの付加反応型液状シリコーンゴム
組成物を調製しE液とした。[Comparative Example 2] 6 parts of a porous inorganic fine powder having micropores supporting a fluorine-based surfactant was added to the A liquid of Example 1 to produce an addition reaction liquid silicone rubber with a viscosity of 600 voids like the A liquid. A composition was prepared and used as liquid E.
実施例1のB液においてフッ素系界面活性剤を担持した
微小細孔を有する多孔質無機微粉体を6部添加しB液と
同様に粘度900ボイスの付加反応型液状シリコーンゴ
ム組成物を調製しF液とした。E液とF液を重量比で1
00対100で均一に混合し、脱泡した後、150℃で
10分間加熱することにより、該混合組成物中のビニル
基とケイ素結合水素とが、白金触媒存在下において付加
反応を開始し、該混合組成物は硬化せしめられゴム状弾
性体となった。In the B solution of Example 1, 6 parts of porous inorganic fine powder having micropores supporting a fluorosurfactant was added to prepare an addition reaction liquid silicone rubber composition having a viscosity of 900 voices in the same manner as B solution. It was used as F solution. The weight ratio of E liquid and F liquid is 1
After uniformly mixing 00:100 and defoaming, heating at 150 ° C. for 10 minutes causes the vinyl groups and silicon-bonded hydrogen in the mixed composition to start an addition reaction in the presence of a platinum catalyst, The mixed composition was cured into a rubber-like elastomer.
上記のフッ素系界面活性剤含浸多孔質無機充填剤は下記
の如く調製した。平均粒径25μm、細孔径約0.01
〜10μm、吸油量500mf / 100g。The above fluorosurfactant-impregnated porous inorganic filler was prepared as follows. Average particle size 25μm, pore size approximately 0.01
~10μm, oil absorption 500mf/100g.
見掛比重OJ、BET比表面積115rr?/gのジャ
イロライト型ケイ酸カルシウム(徳山曹達製フローライ
ト■R)100重量部を撹拌装置に導入し、パーフルオ
ロエチレンオキシド付加物(N−ポリオキシエチレン−
N−アルキル−パーフルオロオクタンスルホン酸アミド
)からなるフッ素系界面活性剤を500重量部を、ケイ
酸カルシウム微粉体を撹拌しながら徐々に滴下し、全f
i (500重量部)滴下後、撹拌装置から取り出し、
50℃にて1時間風乾して界面活性剤を含浸したケイ酸
カルシウム微粉体を調製した。Apparent specific gravity OJ, BET specific surface area 115rr? /g of gyrolite type calcium silicate (Fluorite ■R manufactured by Tokuyama Soda) was introduced into a stirring device, and perfluoroethylene oxide adduct (N-polyoxyethylene-
500 parts by weight of a fluorine-based surfactant consisting of N-alkyl-perfluorooctane sulfonic acid amide was gradually added dropwise to the calcium silicate fine powder while stirring, until the total f.
i (500 parts by weight) After dropping, remove from the stirring device,
A calcium silicate fine powder impregnated with a surfactant was prepared by air drying at 50° C. for 1 hour.
[比較例3]
実施例1のB液においてフッ素系界面活性剤(三菱金属
製エフトップ■EF122B)を10部添加しB液間様
に粘度900ポイズの付加反応型液状シリコーンゴム組
成物を調製しG液とした。[Comparative Example 3] Adding 10 parts of a fluorine-based surfactant (Mitsubishi Metals' F-Top EF122B) to the B solution of Example 1 to prepare an addition reaction liquid silicone rubber composition having a viscosity of 900 poise like the B solution. It was made into liquid G.
A液とG液を重量比で100対100で均一に混合し脱
泡した後、150℃で10分間加熱したが該混合組成物
は完全に硬化しなかった。After uniformly mixing liquid A and liquid G at a weight ratio of 100:100 and defoaming, the mixed composition was heated at 150° C. for 10 minutes, but the mixed composition was not completely cured.
実施例1.比較例1.比較例2で得られたゴム状弾性体
について、帯電防止及び除電効果を以下の如き方法で調
べた。20 m m X 60 m m X 2 m
mのゴム試験片にコロナ放電によって一5000Vを所
定の時間(1秒間)印加した後、直ちに感応板プローブ
を用いて、ゴム試験片表面の電位の変化を表面電位計で
測定した。該結果を第3図に示す。Example 1. Comparative example 1. Regarding the rubber-like elastic body obtained in Comparative Example 2, the antistatic and static eliminating effects were investigated by the following methods. 20mm x 60mm x 2m
After applying 15,000 V for a predetermined period of time (1 second) to the rubber test piece of 50 m by corona discharge, the change in potential on the surface of the rubber test piece was immediately measured using a sensitive plate probe with a surface electrometer. The results are shown in FIG.
[実施例2コ
本発明のシリコーンゴム組成物を弾性層として有する熱
圧定着装置用の加圧ローラを下記の如(製造した。[Example 2] A pressure roller for a heat-pressure fixing device having the silicone rubber composition of the present invention as an elastic layer was manufactured as follows.
あらかじめ、外径10mmステンレス製のシロキサン系
プライマー塗布加圧ローラ用芯金を設置し、130℃に
予備加熱してお・いた円筒状金型内に、実施例1のシリ
コーンゴム組成物のA液:B液を100対100の重量
比率で均一に混合し、脱泡して得た混合液を射出し、同
温度にて10分間保持して硬化させた。硬化後に金型よ
り取り出されたシリコーンゴム被覆加圧ローラは、外径
16mm、シリコーンゴム被覆層厚3 m mであった
。Liquid A of the silicone rubber composition of Example 1 was placed in a cylindrical mold in which a siloxane-based primer-coated pressure roller core bar made of stainless steel with an outer diameter of 10 mm was preheated to 130°C. : B liquid was uniformly mixed at a weight ratio of 100:100, and the resulting mixed liquid was injected by defoaming and held at the same temperature for 10 minutes to harden. The silicone rubber-coated pressure roller taken out from the mold after curing had an outer diameter of 16 mm and a silicone rubber coating layer thickness of 3 mm.
上記で得た加圧ローラを使用して第2図に示す熱定着式
定着装置を設置し、下記の条件にて連続通紙定着処理試
験を行った。定着ローラ1は外径20mmのアルミ製芯
金の上にテトラフルオロエチレン樹脂を15μmの層厚
で被覆したものを用いた。A heat fixing type fixing device shown in FIG. 2 was installed using the pressure roller obtained above, and a continuous sheet feeding fixing process test was conducted under the following conditions. The fixing roller 1 used was one in which an aluminum core metal having an outer diameter of 20 mm was coated with tetrafluoroethylene resin in a layer thickness of 15 μm.
(定着条件)
定着ローラ表面管理温度:150℃
定着ローラと加圧ローラ間の締付圧: 6kgf通紙用
紙:テストパターンの未定着トナー像を形成したA4版
転写紙(普通紙)
通紙速度:4枚/分
結果は、25万枚通紙後も加圧ローラ表面にトナー付着
汚れは起こらず、定着ローラ表面へのトナー付着もなか
った。また、画質不良1画像汚れ1画像抜けが全(なく
良好な画質性及び定着性を維持した。特に、紙のローラ
への巻き付き1紙詰まり。(Fixing conditions) Fixing roller surface control temperature: 150°C Tightening pressure between fixing roller and pressure roller: 6 kgf Paper passing: A4 size transfer paper (plain paper) on which the unfixed toner image of the test pattern was formed Paper passing speed : 4 sheets/min As a result, even after 250,000 sheets were passed, no toner adhesion stains occurred on the pressure roller surface, and no toner adhesion to the fixing roller surface. In addition, there were no poor image quality, no image stains, and no missing images, and good image quality and fixing performance were maintained.In particular, there was no paper jam due to paper wrapping around the roller.
紙カール、紙シワなど全く起こらず、ジャムトラブルの
起こらない、良好な搬送性を維持した。ローラの形状変
化も極めて小さく、寸法安定性も良好であった。No paper curls or wrinkles occurred, and good conveyance was maintained without any jam troubles. Changes in the shape of the roller were also extremely small, and the dimensional stability was also good.
[比較例4]
比較例1で調製したG液及びD液を用いる以外は実施例
2と同様にして加圧ローラを製造した。[Comparative Example 4] A pressure roller was manufactured in the same manner as in Example 2, except that liquid G and liquid D prepared in Comparative Example 1 were used.
結果は、1万枚通紙にて加圧ローラ表面へのトナー付着
汚れが増し、画質不良1画像汚れ1画像抜け。As a result, after 10,000 sheets were passed, toner adhesion and stains on the pressure roller surface increased, resulting in poor image quality, 1 image was stained, and 1 image was missing.
紙シワ、紙づまり1紙カールなどが発生した。Paper wrinkles, paper jams, and one paper curl occurred.
[比較例5]
比較例2で調製したF液及びF液を用いる以外は実施例
2と同様にして加圧ローラを製造した。[Comparative Example 5] A pressure roller was manufactured in the same manner as in Example 2 except that the F liquid and the F liquid prepared in Comparative Example 2 were used.
結果は、15万枚通紙にて加圧ローラ表面へのトナー付
着汚れが増し画質不良2画像汚れ9画像抜け9紙シワ、
紙づまり9紙カールなどが発生した。As a result, after 150,000 sheets were passed, toner adhesion to the pressure roller surface increased, image quality was poor, 2 image stains, 9 missing images, 9 paper wrinkles,
Paper jams, 9 paper curls, etc. occurred.
本発明は帯電を防止もしくは抑制し得る液状物質を無機
質中空球状多孔質微粒子に包含担持させ、且つ該微粒子
を付加反応型シリコーンゴム組成物に含有せしめること
により以下の効果をもたらす。The present invention provides the following effects by incorporating and carrying a liquid substance capable of preventing or suppressing electrification on inorganic hollow spherical porous fine particles and incorporating the fine particles into an addition reaction type silicone rubber composition.
1、帯電防止能を有する液状物質を直接添加し混合する
ことによって生じる硬化性の低下。1. Decrease in curability caused by directly adding and mixing a liquid substance with antistatic ability.
強度9弾性等の物性の低下、その他の性能の低下を防止
することができる。Deterioration of physical properties such as strength 9 elasticity and other performance can be prevented.
2)液状物質を無機質中空球状多孔質微粒子に包含担持
させることによる液状物質の粉体化によりシリコーンゴ
ム組成物中への分散が容易となり均一分散が可能となる
。2) Powdering the liquid substance by supporting the liquid substance in inorganic hollow spherical porous particles facilitates dispersion into the silicone rubber composition and enables uniform dispersion.
3、帯電を防止もしくは抑制し得る液状物質を包含担持
した無機質中空球状多孔質微粒子をシリコーンゴム組成
物に含有せしめることにより、ゴム成形物の帯電を防止
もしくは抑制することを可能とする。3. By incorporating inorganic hollow spherical porous fine particles containing and supporting a liquid substance capable of preventing or suppressing electrification into a silicone rubber composition, it is possible to prevent or suppress electrification of a rubber molded article.
4、帯電防止能を有する液状物質を包含担持した無機質
中空球状多孔質微粒子はシリコーンゴム中に均一に分散
されるため帯電防止剤を直接添加した場合に比較してゴ
ム成形物の帯電防止能が向上する。4. The inorganic hollow spherical porous fine particles containing and carrying a liquid substance with antistatic ability are uniformly dispersed in the silicone rubber, so the antistatic ability of the rubber molded product is improved compared to when an antistatic agent is directly added. improves.
5、無機質中空球状多孔質微粒子に包含担持された帯電
防止能を有する液状物質が徐々に該微粒子から放出され
、ゴム成形物表面に移行してい(ために効果の持続性が
飛躍的に向上する。5. The liquid substance with antistatic ability contained in the inorganic hollow spherical porous fine particles is gradually released from the fine particles and transferred to the surface of the rubber molded product (this dramatically improves the sustainability of the effect). .
また、本発明の組成物を例えば電子複写装置等の画像形
成装置における画像定着装置の定着ローラ並びに加圧ロ
ーラ等の定着用ローラの弾性表面層として用いた場合、
ローラ表面の帯電を防止もしくは抑制し得るために、ロ
ーラ表面へのトナーの付着量が大幅に減少し、オフセッ
トの如き画像不良やローラ表面へのトナー付着による汚
染を防止することができるとともに紙の巻き付き、紙カ
ール等の搬送上の問題も解決される。また、無機質中空
球状多孔質微粒子に包含担持された帯電防止能を有する
液状物質が徐々にシリコーンゴム中に供給されることに
より、良好な帯電抑制効果及び除電効果が長期にわたっ
て維持され、その結果、ローラ表面へのトナー付着によ
る汚染や、紙のローラへの巻き付き、紙カールなどの搬
送上の問題が長期にわたり防止され、ローラの耐久性を
飛躍的に向上させることを可能とする。Further, when the composition of the present invention is used as an elastic surface layer of a fixing roller of an image fixing device in an image forming apparatus such as an electronic copying machine and a fixing roller such as a pressure roller,
Since charging on the roller surface can be prevented or suppressed, the amount of toner adhering to the roller surface is significantly reduced, making it possible to prevent image defects such as offset and contamination due to toner adhesion to the roller surface, as well as to reduce the amount of toner adhering to the roller surface. Conveyance problems such as wrapping and paper curling are also solved. In addition, by gradually supplying the liquid substance with antistatic ability contained in the inorganic hollow spherical porous fine particles into the silicone rubber, good antistatic effect and neutralizing effect are maintained over a long period of time, and as a result, Conveyance problems such as contamination due to toner adhesion to the roller surface, paper wrapping around the roller, and paper curling can be prevented for a long time, making it possible to dramatically improve the durability of the roller.
なお、定着用ローラのうち定着ローラ、加圧ローラ共に
、被覆材として、本発明のシリコーンゴム組成物を用い
ても良いし、定着ローラ、加圧ローラのいずれか一方で
もかまわないものである。Note that the silicone rubber composition of the present invention may be used as a covering material for both the fixing roller and the pressure roller among the fixing rollers, or either the fixing roller or the pressure roller may be used.
【図面の簡単な説明】
第1図は帯電防止能を有する液状物質の無機質中空球状
多孔質微粒子への含浸装置を示す。
第2図は本発明の一実施例装置を示す縦断面図を示す。
第3図はシリコーンゴム表面の表面電位の経時変化の一
例を示したものである。
1・・・定着ローラ
2・・・加圧ローラ
6・・・弾性体層
7・・・本発明の帯電防止能を有する液状物質を包含担
持した無機質中空球状多孔質微粒子10・・・未定着ト
ナー
11・・・転写紙BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an apparatus for impregnating inorganic hollow spherical porous particles with a liquid substance having antistatic ability. FIG. 2 shows a longitudinal sectional view of an apparatus according to an embodiment of the present invention. FIG. 3 shows an example of the change over time in the surface potential of the silicone rubber surface. DESCRIPTION OF SYMBOLS 1... Fixing roller 2... Pressure roller 6... Elastic layer 7... Inorganic hollow spherical porous fine particles containing and carrying the liquid substance having antistatic ability of the present invention 10... Not fixed Toner 11...transfer paper
Claims (4)
飽和基を有するオルガノポリシロキサン100重量部、 (B)1分子中に少なくとも3個のケイ素結合水素原子
を有するオルガノハイドロジエンポリシロキサンa重量
部〔但し、a重量部は、オルガノハイドロジエンポリシ
ロキサン中のケイ素原子結合水素原子の合計量と(A)
成分中の全不飽和基のモル比が0.5/1から20/1
となるような量である〕、 (C)帯電を防止もしくは抑制し得る液状物質を包含担
持した無機質中空球状多孔質微粒子0.1〜40重量部
、及び (D)白金系化合物0.1〜500ppm を含有することを特徴とする付加反応型シリコーンゴム
組成物。(1) (A) 100 parts by weight of an organopolysiloxane having at least two silicon-bonded unsaturated groups in one molecule; (B) an organohydrodiene polysiloxane having at least three silicon-bonded hydrogen atoms in one molecule; Part by weight [However, Part by weight is the total amount of silicon-bonded hydrogen atoms in the organohydrodiene polysiloxane and (A)
The molar ratio of all unsaturated groups in the components is from 0.5/1 to 20/1
(C) 0.1 to 40 parts by weight of inorganic hollow spherical porous fine particles containing and supporting a liquid substance capable of preventing or suppressing electrification; and (D) 0.1 to 40 parts by weight of a platinum-based compound. An addition reaction type silicone rubber composition, characterized in that it contains 500 ppm.
ム組成物から形成されることを特徴とする成形物。(2) A molded article formed from the addition reaction type silicone rubber composition according to claim 1.
ム組成物から形成された表面層を有する弾性体を具備し
ていることを特徴とする弾性回転体。(3) An elastic rotating body comprising an elastic body having a surface layer formed from the addition reaction type silicone rubber composition according to claim 1.
させることにより像担持材上に形成された未定着トナー
像を、加熱加圧定着する定着装置において、少なくとも
一方のローラ表面層を弾性体とし、該弾性体が特許請求
の範囲第1項の付加反応型シリコーンゴム組成物から形
成されていることを特徴とする定着装置。(4) In a fixing device that heats and presses an unfixed toner image formed on an image bearing material by conveying the image bearing material between at least a pair of rollers, the surface layer of at least one of the rollers is made of an elastic material. A fixing device characterized in that the elastic body is formed from the addition reaction type silicone rubber composition according to claim 1.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23897289A JPH03100059A (en) | 1989-09-14 | 1989-09-14 | Addition reaction-type silicone rubber composition, and molding, elastic rotating body and fixing apparatus formed from same composition |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23897289A JPH03100059A (en) | 1989-09-14 | 1989-09-14 | Addition reaction-type silicone rubber composition, and molding, elastic rotating body and fixing apparatus formed from same composition |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH03100059A true JPH03100059A (en) | 1991-04-25 |
Family
ID=17038032
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP23897289A Pending JPH03100059A (en) | 1989-09-14 | 1989-09-14 | Addition reaction-type silicone rubber composition, and molding, elastic rotating body and fixing apparatus formed from same composition |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH03100059A (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0722989A1 (en) * | 1995-01-17 | 1996-07-24 | Dow Corning Corporation | Organosiloxane compositions yielding machinable erosion resistant elastomers |
JP2001182738A (en) * | 1999-12-22 | 2001-07-06 | Sumitomo Rubber Ind Ltd | Conductive roll and manufacturing method of conductive roll |
US6459878B1 (en) * | 1999-09-30 | 2002-10-01 | Canon Kabushiki Kaisha | Heating assembly, image-forming apparatus, and process for producing silicone rubber sponge and roller |
US6546223B2 (en) * | 2000-09-01 | 2003-04-08 | Canon Kabushiki Kaisha | Elastic body, roller, heating and fixing device, and manufacturing method therefor |
JP2003141931A (en) * | 2001-11-07 | 2003-05-16 | Shin Etsu Chem Co Ltd | Silicone rubber composition for semi-conductive roll and semi-conductive roll |
JP2007063388A (en) * | 2005-08-31 | 2007-03-15 | Dow Corning Toray Co Ltd | Heat-curable and low-specific gravity liquid silicone rubber composition and low-specific gravity silicone rubber molded product |
JP2009062403A (en) * | 2007-09-04 | 2009-03-26 | Kao Corp | Resin composition |
JP2009217262A (en) * | 2008-03-07 | 2009-09-24 | Xerox Corp | Image fixing member, and process for forming image fixing member |
WO2023276628A1 (en) * | 2021-07-01 | 2023-01-05 | 信越化学工業株式会社 | Addition-curable silicone rubber composition and cured silicone rubber product |
WO2023203982A1 (en) * | 2022-04-18 | 2023-10-26 | 信越化学工業株式会社 | Addition-curable silicone rubber composition and cured silicone rubber product |
-
1989
- 1989-09-14 JP JP23897289A patent/JPH03100059A/en active Pending
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0722989A1 (en) * | 1995-01-17 | 1996-07-24 | Dow Corning Corporation | Organosiloxane compositions yielding machinable erosion resistant elastomers |
US6459878B1 (en) * | 1999-09-30 | 2002-10-01 | Canon Kabushiki Kaisha | Heating assembly, image-forming apparatus, and process for producing silicone rubber sponge and roller |
JP2001182738A (en) * | 1999-12-22 | 2001-07-06 | Sumitomo Rubber Ind Ltd | Conductive roll and manufacturing method of conductive roll |
US6546223B2 (en) * | 2000-09-01 | 2003-04-08 | Canon Kabushiki Kaisha | Elastic body, roller, heating and fixing device, and manufacturing method therefor |
JP2003141931A (en) * | 2001-11-07 | 2003-05-16 | Shin Etsu Chem Co Ltd | Silicone rubber composition for semi-conductive roll and semi-conductive roll |
JP2007063388A (en) * | 2005-08-31 | 2007-03-15 | Dow Corning Toray Co Ltd | Heat-curable and low-specific gravity liquid silicone rubber composition and low-specific gravity silicone rubber molded product |
JP2009062403A (en) * | 2007-09-04 | 2009-03-26 | Kao Corp | Resin composition |
JP2009217262A (en) * | 2008-03-07 | 2009-09-24 | Xerox Corp | Image fixing member, and process for forming image fixing member |
WO2023276628A1 (en) * | 2021-07-01 | 2023-01-05 | 信越化学工業株式会社 | Addition-curable silicone rubber composition and cured silicone rubber product |
WO2023203982A1 (en) * | 2022-04-18 | 2023-10-26 | 信越化学工業株式会社 | Addition-curable silicone rubber composition and cured silicone rubber product |
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