JPS62227967A - Fluororesin power coating for use in forming electrically non-chargeable coating film - Google Patents
Fluororesin power coating for use in forming electrically non-chargeable coating filmInfo
- Publication number
- JPS62227967A JPS62227967A JP7088886A JP7088886A JPS62227967A JP S62227967 A JPS62227967 A JP S62227967A JP 7088886 A JP7088886 A JP 7088886A JP 7088886 A JP7088886 A JP 7088886A JP S62227967 A JPS62227967 A JP S62227967A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- fluororesin
- carbon black
- coating
- coating film
- 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.)
- Granted
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 51
- 239000011248 coating agent Substances 0.000 title claims abstract description 42
- 239000000843 powder Substances 0.000 claims abstract description 65
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 45
- 239000002245 particle Substances 0.000 claims abstract description 31
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 24
- 239000004917 carbon fiber Substances 0.000 claims abstract description 24
- 239000003973 paint Substances 0.000 claims abstract description 3
- 229920005989 resin Polymers 0.000 claims description 15
- 239000011347 resin Substances 0.000 claims description 15
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 2
- 239000011737 fluorine Substances 0.000 claims description 2
- 229910052731 fluorine Inorganic materials 0.000 claims description 2
- 239000006185 dispersion Substances 0.000 abstract description 12
- 229920001577 copolymer Polymers 0.000 abstract description 8
- 239000000835 fiber Substances 0.000 abstract description 6
- 239000000203 mixture Substances 0.000 abstract description 4
- 230000009969 flowable effect Effects 0.000 abstract 2
- 239000006229 carbon black Substances 0.000 description 9
- 235000019241 carbon black Nutrition 0.000 description 9
- 238000005299 abrasion Methods 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000002156 mixing Methods 0.000 description 6
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- BOSAWIQFTJIYIS-UHFFFAOYSA-N 1,1,1-trichloro-2,2,2-trifluoroethane Chemical compound FC(F)(F)C(Cl)(Cl)Cl BOSAWIQFTJIYIS-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 241000282320 Panthera leo Species 0.000 description 2
- QYKIQEUNHZKYBP-UHFFFAOYSA-N Vinyl ether Chemical class C=COC=C QYKIQEUNHZKYBP-UHFFFAOYSA-N 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
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- UUAGAQFQZIEFAH-UHFFFAOYSA-N chlorotrifluoroethylene Chemical group FC(F)=C(F)Cl UUAGAQFQZIEFAH-UHFFFAOYSA-N 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- HCDGVLDPFQMKDK-UHFFFAOYSA-N hexafluoropropylene Chemical group FC(F)=C(F)C(F)(F)F HCDGVLDPFQMKDK-UHFFFAOYSA-N 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 229920002379 silicone rubber Polymers 0.000 description 2
- 239000004945 silicone rubber Substances 0.000 description 2
- 238000007592 spray painting technique Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- BLTXWCKMNMYXEA-UHFFFAOYSA-N 1,1,2-trifluoro-2-(trifluoromethoxy)ethene Chemical compound FC(F)=C(F)OC(F)(F)F BLTXWCKMNMYXEA-UHFFFAOYSA-N 0.000 description 1
- BZPCMSSQHRAJCC-UHFFFAOYSA-N 1,2,3,3,4,4,5,5,5-nonafluoro-1-(1,2,3,3,4,4,5,5,5-nonafluoropent-1-enoxy)pent-1-ene Chemical compound FC(F)(F)C(F)(F)C(F)(F)C(F)=C(F)OC(F)=C(F)C(F)(F)C(F)(F)C(F)(F)F BZPCMSSQHRAJCC-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 241001499740 Plantago alpina Species 0.000 description 1
- 239000004962 Polyamide-imide Substances 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229920002522 Wood fibre Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000006231 channel black Substances 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 230000002301 combined effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000007590 electrostatic spraying Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000003925 fat Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000006232 furnace black Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- AQYSYJUIMQTRMV-UHFFFAOYSA-N hypofluorous acid Chemical compound FO AQYSYJUIMQTRMV-UHFFFAOYSA-N 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920002312 polyamide-imide Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 229920001897 terpolymer Polymers 0.000 description 1
- 239000006234 thermal black Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000002025 wood fiber Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/20—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat
- G03G15/2003—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat
- G03G15/2014—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat
- G03G15/2053—Structural details of heat elements, e.g. structure of roller or belt, eddy current, induction heating
- G03G15/2057—Structural details of heat elements, e.g. structure of roller or belt, eddy current, induction heating relating to the chemical composition of the heat element and layers thereof
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Pressure Vessels And Lids Thereof (AREA)
- Paints Or Removers (AREA)
- Fixing For Electrophotography (AREA)
- Rollers For Roller Conveyors For Transfer (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は非帯電性であって且つ耐摩耗性、非粘着性に優
れたふっ素樹脂塗膜を形成するための粉体塗料に関する
。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a powder coating for forming a fluororesin coating film that is non-static and has excellent abrasion resistance and non-adhesion.
ふっ素樹脂は表面エネルギーが低く、非粘着性に優れて
いるため、ふっ素樹脂の粉体塗料は例えば、オフセット
防止機能が要求される電子複写機の加熱定着ローラーの
被覆や食品、プラスチック等の成形ローラの被覆、ある
いはホラ・９−やタンクのライニング等に多く利用され
ている。しかしながらこのような用途において、ふっ素
樹脂の塗膜は１０１″′オーム以上という高い表面抵抗
を有するため摩擦によって帯電し易いという問題があり
、その改善かもとめられている。Fluororesin has low surface energy and excellent non-adhesive properties, so fluororesin powder coatings are used, for example, as coatings for heat-fixing rollers in electronic copiers that require anti-offset functionality, and on molding rollers for foods, plastics, etc. It is often used as a coating for tanks, linings for tanks, etc. However, in such applications, there is a problem in that the fluororesin coating film has a high surface resistance of 101'' ohm or more and is therefore easily charged by friction, and there is a need to improve this problem.
例えば、電子複写機の定着装置においては、金属芯体表
面にふっ素樹脂を被覆した加熱定着ローラーと金属芯体
表面にシリコーンゴムを被覆した加圧ローラーの組合せ
が多く利用されているが、シリコーンゴムや複写紙との
摩擦によシｆ＃電気が発生し、その結果帯電した定着ロ
ーラー表面に複写紙上の未定着トナーが吸引されて定着
ローラー表面が汚れ、オフセットが発生する。又成形ロ
ーラー等においては空気中の凰あいを吸着して、処理物
がそれによって汚染されるというトラブルが発生する。For example, in the fusing device of an electronic copying machine, a combination of a heated fusing roller whose metal core surface is coated with fluororesin and a pressure roller whose metal core surface is coated with silicone rubber is often used. Electricity is generated due to friction between the fixing roller and the copy paper, and as a result, unfixed toner on the copy paper is attracted to the charged fixing roller surface, staining the fixing roller surface and causing offset. In addition, forming rollers and the like adsorb dust particles in the air, which causes problems such as contamination of the processed material.
従来、上記のような塗膜の帯電を防止するためふっ素樹
脂粉体塗料にカーボンブラックを配合することか行われ
ているが、これを十分な帯電防止効果を得るために好ま
しい１０’オーム以下の表面抵抗とするに必要な配合比
率（５重量％以上）迄添加すると、樹脂の見かけの溶融
粘度が極めて高くなるため塗膜の形成性が悪化し、平滑
でピンホールの無い塗膜を得ることが困難となる他、塗
膜面の非粘着性が低下し、又耐摩耗性も十分でないとい
う問題があった。Conventionally, carbon black has been blended into fluororesin powder coatings in order to prevent the above-mentioned electrostatic charge, but in order to obtain a sufficient antistatic effect, carbon black is preferably added to a powder of 10' ohm or less. If it is added to the blending ratio required to achieve surface resistance (5% by weight or more), the apparent melt viscosity of the resin will become extremely high, resulting in poor coating film formation, making it difficult to obtain a smooth, pinhole-free coating. In addition, there were problems in that the non-adhesion of the coating film surface was reduced and the abrasion resistance was insufficient.
更に、ふっ素樹脂粉末とカーボンブラックとをトライブ
レンドした粉体塗料では静電噴霧塗装時にふっ素樹脂粉
末とカーボンブラックとが分離し易い上、樹脂粉末とカ
ーボンブラックとの間で放電が起こシ易くカーボンブラ
ックの添加址が１％以上の場合には爆発の危険さえある
。Furthermore, in powder coatings that are a tri-blend of fluororesin powder and carbon black, the fluororesin powder and carbon black tend to separate during electrostatic spray painting, and electric discharge easily occurs between the resin powder and carbon black. If the amount of black added is 1% or more, there is even a danger of explosion.
本発明は上記従来の問題点を解決した非帯電性のふっ素
樹脂塗膜を形成するためのふっ素樹脂粉体塗料を提供す
る事を目的とするものである。The object of the present invention is to provide a fluororesin powder coating for forming a non-static fluororesin coating that solves the above-mentioned conventional problems.
本発明のふっ素樹脂粉体塗料は、平均粒径２−１５０ミ
クロンの熱流動性ふっ素樹脂の焼結粉末の粒子内に全重
量に対して１−３：ｌｉ％の導電性カーボンブラックが
均一に分散されていると共に、全重量に対して少なくと
も１１ｉ量％の炭素繊維粉末が該粒子内又は外に均一に
分散されておシ、該導電性カーボンブラックと該炭素繊
維粉末の合計割合が１０重量％以下であることを特徴と
する。In the fluororesin powder coating of the present invention, conductive carbon black is uniformly distributed in the particles of sintered powder of heat-flowable fluororesin with an average particle size of 2-150 microns in an amount of 1-3:li% based on the total weight. and at least 11% by weight of carbon fiber powder based on the total weight is uniformly dispersed within or outside the particles, and the total proportion of the conductive carbon black and the carbon fiber powder is 10% by weight. % or less.
本発明の成分であるふっ素樹脂は熱流動性ふっ素樹脂で
あって、非熱流動性ふっ素樹脂であるＰＴＦＥ等は除外
される。使用し得る熱流動性ふっ素樹脂としては、テト
ラフルオロエチレン共重合体、フッ化ビニリチン重合体
及び共重合体、クロロトリフルオロエチレン重合体及び
共重合体等をあげることが出来る。かかる共重合体のコ
モノマーとしては、テロダン活性を実質的に有しない共
重合可能なビニルモノマーが利用でき、例えば、エチレ
ン、プロピレン、インブチレンのような炭化水［系オレ
フィン類；フッ化とニル、フッ化ビニリチン、クロロト
リフルオロエチレン、）臂−フルオロアルキルエチレン
のよ゛うな含ふっ素オレフィン類；テトラフルオロエチ
レン、ヘキサフルオロプロピレンのよ６なノ９−フルオ
ロオレフィン類；パーフルオロメチルビニルエーテル、
パーフルオロプロピルビニルエーテルのよウナフルオロ
アルキルビニルエーテル類等をあげることができる。The fluororesin that is a component of the present invention is a thermofluid fluororesin, and PTFE and the like, which are non-thermofluid fluororesins, are excluded. Examples of the heat-flowable fluororesin that can be used include tetrafluoroethylene copolymers, fluorinated vinylitine polymers and copolymers, chlorotrifluoroethylene polymers and copolymers, and the like. As a comonomer for such a copolymer, a copolymerizable vinyl monomer having substantially no telodan activity can be used. Fluorine-containing olefins such as vinylitine fluoride, chlorotrifluoroethylene, and -fluoroalkylethylene; 6-9-fluoroolefins such as tetrafluoroethylene and hexafluoropropylene; perfluoromethyl vinyl ether,
Examples include perfluoropropyl vinyl ether and unafluoroalkyl vinyl ethers.
特に好適な樹脂としては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体（ＦＥＰ）、テトラフル
オロエチレン／パーフルオロアル中ルビニルエーテル共
重合体＜ＰＦＡ）、テトラフルオロエチレン／へΦサフ
ルオログロピレ／／パーフルオロアルキルビニルエーテ
ル三元共重合体（ＥＰＥ）、テトラフルオロエチレン／
パーフルオロアルキルエチレン共重合体等を例示するこ
とが出来る。Particularly suitable resins include tetrafluoroethylene/hexafluoropropylene copolymer (FEP), tetrafluoroethylene/ruvinyl ether copolymer in perfluoroalcohol <PFA), tetrafluoroethylene/hexafluoropropylene//perfluoroethylene Alkyl vinyl ether terpolymer (EPE), tetrafluoroethylene/
Examples include perfluoroalkylethylene copolymers.
本発明において上記熱流動性ふっ素樹脂の粉末を構成す
る各樹脂粒子は融点以上の温度で焼成された粒子であシ
、その平均粒径は２−１５０ミクロンであることが好ま
しい。平均粒径が１５０ミクロンを越える場合はピンホ
ールの無い塗膜を形成する事が困難であり、一方平均粒
径が２ミクロン未満の場合は塗膜にクラックが生じ易く
なる。In the present invention, each resin particle constituting the heat-flowable fluororesin powder is preferably a particle fired at a temperature higher than the melting point, and the average particle size thereof is preferably 2 to 150 microns. If the average particle size exceeds 150 microns, it is difficult to form a coating film without pinholes, while if the average particle size is less than 2 microns, cracks are likely to occur in the coating film.
特に好ましい平均粒径は５−７５ミクロンである。A particularly preferred average particle size is 5-75 microns.
本発明の導電性カーボンブラックとしては、ファーネス
ブラック、チャネルブラック、サーマルブラック等従来
公知のものが使用できるが、特に粒子径５０ミリミクロ
ン以下のファーネス系導電性カーボンブラックが好まし
い。このようなカーボンブラックとしては、ケッチェン
ブラックＥＣ（商品名、ライオン油脂製）が例示される
。Conventionally known conductive carbon blacks such as furnace black, channel black, and thermal black can be used as the conductive carbon black of the present invention, but furnace-based conductive carbon blacks having a particle size of 50 millimicrons or less are particularly preferred. An example of such carbon black is Ketjen Black EC (trade name, manufactured by Lion Oil Co., Ltd.).
導電性カーボンブラックの配合量は１−３重量％の範囲
から選択される。１重量％未満の配合量では、塗膜の表
面抵抗が高くなシ十分な帯電防止効果が得られない。３
重量％を越える配合量では、溶融製膜時の樹脂の見かけ
の溶融粘度が極めて高くなるため塗膜の形成性が悪化し
、塗膜の非粘着性も劣ったものとなるので好ましくない
。The amount of conductive carbon black is selected from the range of 1-3% by weight. If the amount is less than 1% by weight, the surface resistance of the coating film will be high and a sufficient antistatic effect will not be obtained. 3
If the blending amount exceeds % by weight, the apparent melt viscosity of the resin during melt film formation becomes extremely high, resulting in poor coating film formation properties and poor non-stick properties of the coating film, which is not preferred.
本発明の利点の一つは、上記のように、導電性カーボン
ブラックの配合量が、塗膜の形成性や非粘着性に悪影響
を及ぼさない程度の少量であるにもかかわらず、優れた
帯電防止効果がえられる点にあり、これは下記のように
第二の充填材成分である炭素繊維粉末との複合効果によ
って達成される。One of the advantages of the present invention is that, as mentioned above, the amount of conductive carbon black contained is so small that it does not adversely affect the coating film formation properties or non-adhesive properties, yet it provides excellent charging performance. A preventive effect is obtained, and this is achieved by the combined effect with the second filler component, carbon fiber powder, as described below.
本発明の炭素繊維としては、ポリアクリロニトリル、キ
ツチ、レーヨン、リグニン等の繊維を原料とする従来公
知の炭素繊維が使用でき、平均繊維長１０−１００ミク
ロン、繊維径５−２０ミクロンの炭素繊維が有利に採用
され得る。繊維長が余りに大きいものは粉末粒子間の空
隙率が犬となり、平滑でピンホールのない塗膜を得難い
ので好ましくない。特に好ましい平均繊維長は１〇−５
０ミクロンである。As the carbon fiber of the present invention, conventionally known carbon fibers made from fibers such as polyacrylonitrile, wood fiber, rayon, lignin, etc. can be used. can be advantageously employed. If the fiber length is too long, the porosity between the powder particles becomes too large, making it difficult to obtain a smooth coating without pinholes, which is not preferable. A particularly preferable average fiber length is 10-5
It is 0 micron.
炭素繊維の配合量は少なくとも１重量％とすることが必
要であり、１重量％未満の場合は十分な帯′屯防止効果
や耐摩耗性の向上が得られない。炭素繊維粉末は導電性
カーボンブラックに比べて粒就が大きく、比表面積も小
さいため、配合量の増加にともなう樹脂の見かけの溶融
粘度増大の程度は導電性カーボンブラックの場合に比べ
て小さいが、導電性カーボンブラックとの合計割合が１
０重量％を越える配合量は塗膜の形成性を悪化させるの
で避けるべきである。特に好ましい合計割合は５重量％
以下である。It is necessary that the amount of carbon fiber blended is at least 1% by weight; if it is less than 1% by weight, sufficient banding prevention effect and improvement in abrasion resistance cannot be obtained. Carbon fiber powder has a larger grain size and a smaller specific surface area than conductive carbon black, so the increase in the apparent melt viscosity of the resin as the blending amount increases is smaller than that of conductive carbon black. The total ratio with conductive carbon black is 1
A blending amount exceeding 0% by weight should be avoided since it deteriorates the coating film formation properties. A particularly preferred total proportion is 5% by weight.
It is as follows.
本発明の粉体塗料において、上記導電性カーボンブラッ
ク及び炭素繊維粉末の分散形態としては、（イ）導電性
カーボンブラック及び炭素繊維粉末が共に熱流動性ふっ
素樹脂粉末の各焼成粒子の内部に均一に分散されている
形態（粒子表面部分の樹脂に固着して分散されている形
態も包含する）、（ロ）導電性カーボンブラックが各焼
成粒子の内部に均一に分散され、一方、炭素繊維粉末が
各焼成粒子の外部に均一に分散されている形態、並びに
、（ハ）導電性カーボンブラックが各焼成粒子の内部に
均一に分散され、一方、炭素繊維粉末が各焼成粒子の内
部及び外部に均一に分散されている形態、のいずれの形
態をもとることができるが、粉体塗料の取り扱い時や噴
霧塗装時に炭素繊維粉末が分離し難いという点から、（
イ）の形態がより好ましい。In the powder coating of the present invention, the dispersion form of the conductive carbon black and carbon fiber powder is as follows: (a) both the conductive carbon black and the carbon fiber powder are uniformly distributed inside each fired particle of the heat-flowable fluororesin powder; (2) Conductive carbon black is uniformly dispersed inside each fired particle, while carbon fiber powder (c) Conductive carbon black is uniformly dispersed inside each fired particle, while carbon fiber powder is distributed inside and outside each fired particle. Carbon fiber powder can be in any form (uniformly dispersed), but carbon fiber powder is difficult to separate when handling powder coatings or spray painting.
The form a) is more preferable.
（イ）の形態の粉体塗料は、例えば特公昭５４−３１７
２や特公昭５２−４４５７６に記載されるように、平均
粒径０．０５−０．５ミクロンの熱流動性ふっ素樹脂を
含む水性分散液に導電性カーボンブラックと炭素繊維粉
末とを添加、分散して得られる混合分散液又は該混合分
散液を共凝集する事によって得られる凝集粉末を該熱流
動性ふっ素樹脂の融点以上に保たれた雰囲気中に噴霧し
て焼成することにより製造する事ができる。The powder coating of the form (a) is, for example,
2 and Japanese Patent Publication No. 52-44576, conductive carbon black and carbon fiber powder are added and dispersed in an aqueous dispersion containing a thermofluid fluororesin with an average particle size of 0.05-0.5 microns. It can be produced by spraying the mixed dispersion obtained by coagulating the mixed dispersion or the agglomerated powder obtained by co-agglomerating the mixed dispersion into an atmosphere maintained at a temperature higher than the melting point of the thermofluid fluororesin and firing it. can.
（ロ）の形態の粉体塗料は上記製造法において、ふっ素
樹脂の水性分散液に導電性カーボンブラックのみを添加
分散し、以下同様にして導電性カーボンブラックのみが
粒子内に分散された熱流動性ふっ素樹脂の焼成粉末を得
、この粉末と炭素繊維粉末とを、例えばトライブレンド
等の方法により混合することによって製造することがで
きる。The powder coating of form (b) is produced by adding and dispersing only conductive carbon black to an aqueous dispersion of fluororesin in the above manufacturing method. It can be produced by obtaining a fired powder of a fluororesin and mixing this powder with carbon fiber powder, for example, by a method such as tri-blend.
（ハ）の形態の粉体塗料は、（イ）の形態の粉体塗料に
炭素繊維粉末を混合することによって製造することがで
きる。The powder coating of the form (c) can be produced by mixing carbon fiber powder with the powder coating of the form (a).
本発明の粉体塗料によれば、導電性カーボンブラックと
炭素繊維粉末の配合量が極めて少ないにもかかわらず、
非帯電性にすぐれた塗膜を得ることができ、且つ両充填
材の配合量が少ないことにより、塗膜の形成性に侵れ、
非粘着性等のふっ素樹脂の特性も損なわれない。しかも
、炭素繊維の補強効果によって、従来の導電性カーボン
ブラックのみを配合したものに比べ、塗膜の耐摩耗性も
大幅に向上したものとなる。According to the powder coating of the present invention, despite the extremely small amount of conductive carbon black and carbon fiber powder,
It is possible to obtain a coating film with excellent non-static properties, and because the amount of both fillers is small, the formation properties of the coating film are affected.
The properties of fluororesin, such as non-adhesiveness, are not impaired. Furthermore, due to the reinforcing effect of the carbon fibers, the abrasion resistance of the coating film is also significantly improved compared to conventional coatings containing only conductive carbon black.
本発明の第二の効果は、導電性カーボンブラックがふっ
素樹脂粉末の粒子内に包含されているという特徴による
ものであり、粉体塗料の移送、運搬等の取り扱い時や、
噴畷塗装時に導電性カーボンブラック樹脂粉末から分離
することが無いため、極めて均一な組成の塗膜を得るこ
とができる。更にこの特徴のため、従来のカーボンブラ
ックとふっ素樹脂粉末がトライブレンドされた粉体塗料
のように、導電性カーボンブラックと樹脂粉末との間の
放電による粉じん１発の危険性もない。The second effect of the present invention is due to the characteristic that the conductive carbon black is included in the particles of the fluororesin powder.
Since there is no separation from the conductive carbon black resin powder during funote coating, a coating film with an extremely uniform composition can be obtained. Furthermore, because of this feature, there is no danger of a single dust particle being emitted due to electrical discharge between the conductive carbon black and the resin powder, unlike conventional powder coatings in which carbon black and fluororesin powder are tri-blended.
本発明の粉体塗料は、鉄、アルミニウム、ニッケル、チ
タン、銅等の金属や合金、あるいはガラスや陶磁器等の
耐熱製基材に塗装され、基材には樹脂塗膜との接着強度
を高めるため、予めプラスト処理、エツチング処理、プ
ライマー処理等の表面処理を施しておくことができる。The powder coating of the present invention is applied to metals and alloys such as iron, aluminum, nickel, titanium, and copper, or to heat-resistant substrates such as glass and ceramics, and the powder coating enhances the adhesive strength with the resin coating on the substrate. Therefore, a surface treatment such as a blast treatment, an etching treatment, a primer treatment, etc. can be performed in advance.
本発明の粉体塗料は静電吹き付は塗装に特に有用なもの
であるが、それ以外の塗装法、例えば、ふシかけ法、転
がし法、吹きつけ法、流動浸せき法、静電流動浸せき法
等にも好適に利用する事ができるし、有機溶剤等に分散
させ分散液塗料として利用することもできる。このよう
な塗装法によシ粉末を基材に塗着した後は、樹脂の融点
以上に加熱して焼付けが行われる。焼き付は雰囲気とし
ては空気中又は不活性ガス雰囲気が利用できる。得られ
た塗膜は所望によシ研磨やローラー掛は等の二次加工を
施すことによって一層平滑性を向上することも出来る。The powder coating of the present invention is particularly useful for painting by electrostatic spraying, but it can also be applied to other coating methods, such as spraying, rolling, spraying, fluid dipping, and electrostatic dynamic dipping. It can be suitably used for methods such as methods, and can also be used as a dispersion paint by dispersing it in an organic solvent or the like. After the resin powder is applied to the base material by such a coating method, baking is performed by heating it to a temperature higher than the melting point of the resin. For baking, air or an inert gas atmosphere can be used as the atmosphere. The resulting coating film can be further improved in smoothness by subjecting it to secondary processing such as polishing or rolling, if desired.
本発明の粉体塗料は前記複写機の加熱定着ローラーや成
形ローラー、ホラ・臂−、タンク等の被覆の他、非粘着
性や耐薬品性等のふっ素樹脂の優れた特性が要求され、
且つ題あいの吸着や、放電、電波障害等のトラブル防止
のため導電性が要求される各種物品の被覆に利用するこ
とが出来る。The powder coating of the present invention is required to coat the heat fixing roller, forming roller, hollow, arm, tank, etc. of the copying machine, and also has the excellent properties of fluororesin such as non-adhesiveness and chemical resistance.
In addition, it can be used to coat various articles that require electrical conductivity in order to prevent troubles such as problematic adsorption, discharge, and radio wave interference.
実施例１
平均粒径約０．２ミクロン、融点３０７℃を有するｐＦ
Ａ樹脂の２３９ｇ水性分散液に、平均粒径約２５ミリミ
クロンの導電性カーボンブラック（商品名ケッチェンブ
ラックＥＣ，ライオン油脂製）及び平均繊維長２５ミク
ロン、繊維径７ミクロンの炭素繊維粉末を第１表（テス
）Ｎ１１１−１２ ）に示す割合で添加し、攪はんによ
って均一に分散させた後、硝酸とトリクロロトリフルオ
ロエタンとを順次添加して共凝集を行った。Example 1 pF with an average particle size of about 0.2 microns and a melting point of 307°C
Conductive carbon black (product name Ketjen Black EC, manufactured by Lion Oil & Fats) with an average particle size of about 25 mm and carbon fiber powder with an average fiber length of 25 microns and a fiber diameter of 7 microns were added to 239 g of an aqueous dispersion of resin A. They were added in the proportions shown in Table 1 (Tess) N111-12) and uniformly dispersed by stirring, and then nitric acid and trichlorotrifluoroethane were sequentially added to coagulate.
得られた共凝集粉末をろ別し、トリクロロトリフルオロ
エタンを揮散させた後、リッツミル（リンツマニュ７ア
クチュアリング製、モデルＲＰ−６−ｆ１１５、回転数
６０００Ｊ？Ｐ％ｆ）で粉砕した。The obtained co-agglomerated powder was filtered, trichlorotrifluoroethane was volatilized, and then pulverized with a Ritz mill (manufactured by Lindt Manu 7 Acturing, model RP-6-f115, rotation speed 6000 J?P%f).
該粉砕粉末を５５０°ＣｃＤ温度雰囲気を有する特公昭
５２−４４５７６号に記載されるごとき焼成炉に噴霧し
て焼成し、融点以下に冷却された粉末をサイクロンに捕
集した。サイクロンよシ取り出した各焼成粉末の平均粒
径は１５〜３０ミクロンであシ、顕微鏡観察の結果いず
れもほぼ球状の粒子であって、第１表に示すテストＮａ
２〜１２の粉末では樹脂粒子内に充填剤粉末が分散して
おシ、粒子表面に存在する炭素繊維は樹脂に固着して分
離し難いことが観察された。The pulverized powder was fired by spraying it into a firing furnace as described in Japanese Patent Publication No. 52-44576 having a temperature atmosphere of 550°CcD, and the powder cooled below the melting point was collected in a cyclone. The average particle size of each fired powder taken out from the cyclone was 15 to 30 microns, and microscopic observation showed that all particles were approximately spherical, and the test Na shown in Table 1.
It was observed that in powders Nos. 2 to 12, the filler powder was dispersed within the resin particles, and the carbon fibers present on the particle surface adhered to the resin and were difficult to separate.
得られた各焼成粉末をプラスト処理したアルミニウム板
上に静電吹き付は法によって塗着しだ後３８０℃で２０
分間焼成し、厚さ約５０ミクロンの塗膜を得た。The obtained fired powders were electrostatically sprayed onto a plasto-treated aluminum plate and then heated at 380℃ for 20 minutes.
It was baked for a minute to obtain a coating film with a thickness of about 50 microns.
各粉末から得られた塗膜の状態及び物性を第１表に示す
。テス）ＮｌｌＬ５−８は本発明例、Ｎｃｔｌ−４及び
９−１２は比較例である。なお、摩耗係数は、荷重＝
３ ｋｙ／ｃＩ／ｌ、平均速度＝Ｑ、５ｍ／秒、相手材
＝５．５−４１、温度＝２０℃なる条件で測定した。Table 1 shows the state and physical properties of the coating film obtained from each powder. NllL5-8 is an example of the present invention, and Nctl-4 and 9-12 are comparative examples. In addition, the wear coefficient is load =
Measurement was performed under the following conditions: 3 ky/cI/l, average speed = Q, 5 m/sec, mating material = 5.5-41, and temperature = 20°C.
実施例２
加熱ローラの表面を実施例１のテスト血１又はＮα５の
粉体塗料で被覆した第１図に示す熱ローラ型定着装置を
用いて複写試験を行なった。Example 2 A copying test was conducted using the heated roller type fixing device shown in FIG. 1, in which the surface of the heated roller was coated with Test Blood 1 or Nα5 powder coating of Example 1.
その結果、テストＮＩＩＬ１ではオフセットが起ったが
、テストＮａ ５ではオフセットの発生は全く認められ
なかった。As a result, an offset occurred in test NIIL1, but no offset was observed in test Na5.
また、ローラ回転数＝９４ ｒｐｍ、ローラ懺面温度＝
１８０〜１９０℃、分離爪材質＝ポリアミドイミド、分
離爪先端圧力＝６０１なる条件下での耐摩耗性試験にお
いても、テスト１１！１ｌＬ５は第２図に示すようにテ
スト血１に較べて遥かに優れた結果を与えた。Also, roller rotation speed = 94 rpm, roller surface temperature =
Even in the abrasion resistance test under the conditions of 180 to 190°C, separation claw material = polyamideimide, and separation claw tip pressure = 601, Test 11!1L5 was far superior to Test Blood 1 as shown in Figure 2. gave excellent results.
第１図は実施例２において使用された熱ローラ型定着装
置の断面略示図であり、第２図は実施例２における耐摩
耗性試験の結果を示すグラフである。
図において、１は加熱ローラ、２は加圧ローラ、３は被
覆層、４は芯金、５は発熱ランプ、６はシリコーンゴム
層、７は芯金、８は未定着（帯電）トナー、９は定着ト
ナー、１０は複写紙である。FIG. 1 is a schematic cross-sectional view of the heat roller type fixing device used in Example 2, and FIG. 2 is a graph showing the results of the abrasion resistance test in Example 2. In the figure, 1 is a heating roller, 2 is a pressure roller, 3 is a coating layer, 4 is a metal core, 5 is a heating lamp, 6 is a silicone rubber layer, 7 is a metal core, 8 is unfixed (charged) toner, 9 1 is a fixed toner, and 10 is copy paper.
Claims (1)
結粉末の粒子内に全重量に対して１−３重量％の導電性
カーボンブラックが均一に分散されていると共に全重量
に対して少なくとも１重量％の炭素繊維粉末が該粒子内
又は外に均一に分散されており、該導電性カーボンブラ
ックと該炭素繊維粉末との合計割合が１０重量％以下で
あることを特徴とする非帯電性塗膜形成用ふつ素樹脂粉
体塗料。Conductive carbon black in an amount of 1-3% by weight based on the total weight is uniformly dispersed within the particles of the sintered powder of thermofluid fluororesin with an average particle size of 2-150 microns. At least 1% by weight of carbon fiber powder is uniformly dispersed within or outside the particles, and the total proportion of the conductive carbon black and the carbon fiber powder is 10% by weight or less. Fluorine resin powder paint for forming a transparent coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7088886A JPS62227967A (en) | 1986-03-31 | 1986-03-31 | Fluororesin power coating for use in forming electrically non-chargeable coating film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7088886A JPS62227967A (en) | 1986-03-31 | 1986-03-31 | Fluororesin power coating for use in forming electrically non-chargeable coating film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62227967A true JPS62227967A (en) | 1987-10-06 |
| JPH0573147B2 JPH0573147B2 (en) | 1993-10-13 |
Family
ID=13444514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7088886A Granted JPS62227967A (en) | 1986-03-31 | 1986-03-31 | Fluororesin power coating for use in forming electrically non-chargeable coating film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62227967A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008044668A1 (en) * | 2006-10-10 | 2008-04-17 | Kureha Corporation | Powder coating, method for production of coated material, and coated material |
| CN104927503A (en) * | 2015-06-18 | 2015-09-23 | 巨化集团技术中心 | Thermoset fluororesin powder coating preparation method |
| WO2022178369A1 (en) * | 2021-02-22 | 2022-08-25 | Chemours-Mitsui Fluoroproducts Co., Ltd | Powder coating composition |
| WO2023120617A1 (en) * | 2021-12-22 | 2023-06-29 | ダイキン工業株式会社 | Powder coating composition, coating, multilayered coating, and coated article |
-
1986
- 1986-03-31 JP JP7088886A patent/JPS62227967A/en active Granted
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008044668A1 (en) * | 2006-10-10 | 2008-04-17 | Kureha Corporation | Powder coating, method for production of coated material, and coated material |
| JP5430939B2 (en) * | 2006-10-10 | 2014-03-05 | 株式会社クレハ | Powder coating material, method for producing painted material, and painted material |
| CN104927503A (en) * | 2015-06-18 | 2015-09-23 | 巨化集团技术中心 | Thermoset fluororesin powder coating preparation method |
| WO2022178369A1 (en) * | 2021-02-22 | 2022-08-25 | Chemours-Mitsui Fluoroproducts Co., Ltd | Powder coating composition |
| WO2023120617A1 (en) * | 2021-12-22 | 2023-06-29 | ダイキン工業株式会社 | Powder coating composition, coating, multilayered coating, and coated article |
| JP2023093394A (en) * | 2021-12-22 | 2023-07-04 | ダイキン工業株式会社 | Powder coating composition, coating layer, multilayered coating layer, and coated article |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0573147B2 (en) | 1993-10-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0008542B1 (en) | Method of manufacturing xergraphic fuser roll having an abhesive surface | |
| WO2016133010A1 (en) | Coating composition, coating film, and laminated body | |
| EP0483760B1 (en) | Fluororesin coating composition | |
| JP2008525616A (en) | Fluoropolymer composition, coated article, and method of making the same | |
| JPH10142990A (en) | Fixing roller | |
| US20050267246A1 (en) | Abrasion resistant fluoropolymer compositions containing zeolite | |
| US5376307A (en) | Fluorocarbon paint composition | |
| EP1749062B1 (en) | Abrasion resistant fluoropolymer compositions containing micropulp | |
| JPS62227967A (en) | Fluororesin power coating for use in forming electrically non-chargeable coating film | |
| JP2831714B2 (en) | Manufacturing method of heat fixing roll for electrophotography | |
| JP3217452B2 (en) | Method for forming polybenzimidazole coating | |
| KR20210015867A (en) | Fluoropolymer coating composition | |
| JPS59198118A (en) | Manufacture of heat fluidized fluorocarbon resin- covered cylindrical article | |
| JP2769319B2 (en) | Complex | |
| JP7260835B1 (en) | Powder coating compositions, coatings, multi-layer coatings and coated articles | |
| JP3390531B2 (en) | Fluororesin powder composition for powder processing | |
| JP2018168324A (en) | Coating Composition | |
| KR100194986B1 (en) | Fluorocarbon Paint Compositions | |
| JP2007264542A (en) | Fixing rotator and method of manufacturing same | |
| JP2642816B2 (en) | Separation claw for copier | |
| JP2002322432A (en) | Non-sticky abrasion-resistant coating composition and non-sticky abrasion-resistant coated article | |
| KR20230146585A (en) | powder coating composition | |
| JPH0564353B2 (en) | ||
| JPH06102786A (en) | Fixing roller | |
| JPH0679841A (en) | Two-layer film |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |