JPH0535183B2 - - Google Patents
Info
- Publication number
- JPH0535183B2 JPH0535183B2 JP59116700A JP11670084A JPH0535183B2 JP H0535183 B2 JPH0535183 B2 JP H0535183B2 JP 59116700 A JP59116700 A JP 59116700A JP 11670084 A JP11670084 A JP 11670084A JP H0535183 B2 JPH0535183 B2 JP H0535183B2
- Authority
- JP
- Japan
- Prior art keywords
- composition
- wollastonite
- fluororesin
- wear
- present
- 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.)
- Expired - Lifetime
Links
- 239000000203 mixture Substances 0.000 claims description 24
- 239000010456 wollastonite Substances 0.000 claims description 16
- 229910052882 wollastonite Inorganic materials 0.000 claims description 16
- 238000000465 moulding Methods 0.000 claims description 6
- 229920001577 copolymer Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 description 17
- 229920005989 resin Polymers 0.000 description 17
- 239000000463 material Substances 0.000 description 10
- 238000012360 testing method Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 238000005452 bending Methods 0.000 description 6
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000001746 injection moulding Methods 0.000 description 4
- 230000013011 mating Effects 0.000 description 4
- 239000011342 resin composition Substances 0.000 description 4
- 229920003002 synthetic resin Polymers 0.000 description 4
- 239000000057 synthetic resin Substances 0.000 description 4
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 3
- 239000004962 Polyamide-imide Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 239000011737 fluorine Substances 0.000 description 3
- 229910052731 fluorine Inorganic materials 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229920002312 polyamide-imide Polymers 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 229920001780 ECTFE Polymers 0.000 description 2
- 239000002033 PVDF binder Substances 0.000 description 2
- 239000004963 Torlon Substances 0.000 description 2
- 229920003997 Torlon® Polymers 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 229910052918 calcium silicate Inorganic materials 0.000 description 2
- 235000012241 calcium silicate Nutrition 0.000 description 2
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 2
- 229920000840 ethylene tetrafluoroethylene copolymer Polymers 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 229920002493 poly(chlorotrifluoroethylene) Polymers 0.000 description 2
- 239000005023 polychlorotrifluoroethylene (PCTFE) polymer Substances 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- 229920002620 polyvinyl fluoride Polymers 0.000 description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 2
- 239000007779 soft material Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229920000271 Kevlar® Polymers 0.000 description 1
- 241000208822 Lactuca Species 0.000 description 1
- 235000003228 Lactuca sativa Nutrition 0.000 description 1
- 229920006364 Rulon (plastic) Polymers 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 229920006015 heat resistant resin Polymers 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000004761 kevlar Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Description
〈産業上の利用分野〉
本発明は耐摩耗性の優れた溶融成形用フツ素系
樹脂組成物に関する。
〈従来の技術〉
近年、オフイス・オートメーシヨン（OA）機
器を中心とした機器の小型化に伴ない、軸受け、
ブツシユ、スライダー等の摺動部材が、従来のボ
ールベアリング、焼結金属製から無給油（オイル
レス）の合成樹脂製に変換されつつある。
しかしながら、このような摺動部材は、より高
荷重、より高速度かつ150℃以上の高温度雰囲気
下で使用されるものとなつているため、従来の合
成樹脂材料では適用が不可能であつた。しかも、
合成樹脂製摺動部材の相手材がアルミニウムやア
ルミニウム合金等のような軟質材料である場合、
合成樹脂としてポリアミド樹脂やポリアミドイミ
ド樹脂のような硬質材料は相手材を摩耗させるた
め使用できない。
〈発明が解決しようとする問題点〉
そこで、本発明者らは、フツ素系樹脂を使用す
ることを検討した。フツ素系樹脂は耐熱性、耐薬
品性、耐候性、電気特性、非粘着性に優れてお
り、しかも低摩擦係数を有しているが、一方弾性
係数が低く、摺動面にキズが入り易いという欠点
があつた。従つて、低荷重下で摺動部材として使
用する際でも摩耗量が大きく、まして高荷重、高
温度雰囲気下で摺動部材として使用することは不
可能であつた。
本発明者らは、フツ素系樹脂を用いて、高荷
重、高速度、高温度雰囲気下における耐摩耗性の
優れた摺動部材用の材料を提供することを目的と
して鋭意検討した結果、本発明に到達した。
〈問題点を解決するための手段および作用〉
すなわち、本発明はフツ素系樹脂94〜40重量
％、ワラストナイト５〜60重量％からなる耐摩耗
性の優れた溶融成形用フツ素系樹脂組成物であ
る。
フツ素系樹脂とメタケイ酸カルシウムからなる
水性分散液は知られている（特開昭54−150454号
公報）が、フツ素系樹脂とワラストナイトからな
る溶融成形用組成物はまだ知られておらず、ま
た、かかる組成物の優れた耐摩耗性効果も全く知
られていない。耐摩耗性向上効果はフツ素系樹脂
にワラストナイトを含有せしめることにより特異
的に奏される。ガラス繊維、グラフアイト、炭酸
カルシウム、タルク、ガラスビーズ、二硫化モリ
ブデン、炭素繊維、銅、アルミニウム、雲母等の
ワラストナイト以外の充填剤を含有したフツ素系
樹脂組成物は、比較例にも示されるように耐摩耗
性が多少は改善されるが、まだ十分ではない。
以下、本発明を具体的に説明する。
本発明で好ましく用いられるフツ素系樹脂とし
ては、例えばポリテトラフルオロエチレン
（PTFE）、ポリクロロトリフルオロエチレン
（POTFE）、ポリフツ化ビニリデン（PVdF）、ポ
リフツ化ビニル（PVF）、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
ロアルキルビニルエーテル共重合体（PFA）、テ
トラフルオロエチレン−エチレン共重合体
（ETFE）、クロロトリフルオロエチレン−エチレ
ン共重合体（ECTFE）等が挙げられ、これらは
混合物としても使用できる。これらのうちで、よ
り好ましくはPFAが用いられる。
本発明で用いられるワラストナイトは、大部分
が天然産のカルシウムメタシリケートである。ワ
ラストナイトは、例えば米国プロセスド・ミネラ
ルズ社（Proccessed Minerals Inc.）からも販売
されている。ワラストナイトは樹脂への分散性が
よく、特別な表面処理なしで樹脂に添加できる。
また、ワラストナイトにシランカツプリング剤を
コーテイングすることにより強度的、電気的、熱
的特性を改良でき、耐水性を上げ、粘度を下げ作
業性をよくし、高充填化を可能とする場合があ
る。ワラストナイトの添加量はフツ素系樹脂とワ
ラストナイトからなる組成物全体の５〜60重量％
が好ましく、より好ましくは20〜50重量％であ
る。添加量が５重量％未満では強度や耐摩耗性の
改善効果が少なく十分な摺動特性、耐摩耗性が得
られない。一方、60重量％を越えるとワラストナ
イトが均一に分散せず、溶融時の流動性が悪くな
り表面外観のよい成形品が得られない。また、強
度も低下し、摺動特性、耐摩耗性も悪化する。特
に耐摩耗性では軟質材料からなる相手材を摩耗し
易くなる。
本発明の樹脂組成物に更に潤滑性を向上させる
為に、オキシベンゾイルポリエステルのごとき高
結晶性耐熱性樹脂、“ケブラー”（商標）のごとき
芳香族ポリアミド系樹脂のごとき有機重合体；黒
鉛、二硫化モリブデンなどの固体潤滑剤；シリコ
ーンオイル、有機酸の金属塩からなる金属石ケ
ン；ワツクス類を少量加えることも可能である。
本発明の樹脂組成物を得る為の混合方法として
はフツ素系樹脂とワラストナイトを例えばヘンシ
エルミキサー、スーパーミキサーなどの混合機で
ドライブレンドした後、一軸または多軸押出機で
溶融混練しストランドに押出しカツターにてペレ
ツト化する方法が一般的であるが、特にこれに限
定されるものではない。
また、例えばPTFEのように上記方法でペレツ
ト化ができないフツ素系樹脂においてはヘンシエ
ルミキサー、スーパーミキサーなどで混合した
後、そのまま次の成形に使用すればよい。
このようにして得られた本発明の組成物から軸
受け、ブツシユ、スライダー、ギヤー、分離爪
（セパレーター）その他の成形品を得るには射出
成形を適用するのが一般的であるが、スライダー
のごとき成形品では押出成形によりシートを成形
し、スライダーの形状に打ち抜くことやラム押出
機や単軸、２軸押出機で丸棒や平板、円筒のごと
き素材を成形し、この素材から機械加工によつて
軸受け、ブツシユ、ギヤー、分離爪等の製品を得
ることもできる。
〈実施例〉
以下、実施例により本発明を説明する。
実施例 １
フツ素系樹脂としてPFA樹脂（三井フロロケ
ミカル(株)製340J）と各種充填剤を第１表に示す組
成比となるようヘンシエルミキサーで混合し、１
軸タイプの押出機（田辺機械 30φ押出機）でシ
リンダー温度を310〜350℃に設定し、押出造粒を
行ないペレツトを得た。これらを射出成形機（住
友重機製、ネオマツト25／140）を用いて曲げ試
験片、摩耗試験片（30□
×3t角板）に成形した。
曲げ特性はASTM D790−49Tにより測定した。
摩擦摩耗特性は、鈴木式摩耗試験機を用いて室温
下で圧力Ｐ＝10Kg／cm2、速度20ｍ／分の条件下で
相手材にS45Cリング（外径23.1mmφ、内径20.2mm
φ、接触面積１cm2）を用い１時間運転した後の各
試験片の摩擦係数と摩耗量を測定した。結果は表
１の通りであり、本発明組成物はすぐれた耐摩耗
性を示す。
<Industrial Application Field> The present invention relates to a fluororesin composition for melt molding that has excellent wear resistance. <Conventional technology> In recent years, with the miniaturization of equipment, mainly office automation (OA) equipment, bearings,
Sliding members such as bushes and sliders are being converted from conventional ball bearings and sintered metals to oil-free synthetic resins. However, since such sliding members are used under higher loads, higher speeds, and high temperature environments of 150°C or higher, it has been impossible to apply them using conventional synthetic resin materials. . Moreover,
When the mating material of the synthetic resin sliding member is a soft material such as aluminum or aluminum alloy,
Hard materials such as polyamide resin and polyamideimide resin cannot be used as synthetic resins because they will wear out the mating material. <Problems to be Solved by the Invention> Therefore, the present inventors have considered using a fluororesin. Fluorine-based resins have excellent heat resistance, chemical resistance, weather resistance, electrical properties, and non-adhesiveness, as well as a low coefficient of friction, but they also have a low elastic coefficient and can cause scratches on the sliding surface. It had the disadvantage of being easy. Therefore, even when used as a sliding member under a low load, the amount of wear is large, and it has been impossible to use it as a sliding member under a high load and high temperature atmosphere. The inventors of the present invention have conducted extensive research with the aim of providing a material for sliding members that has excellent wear resistance under high loads, high speeds, and high temperature environments, using fluorocarbon resins. invention has been achieved. <Means and effects for solving the problems> That is, the present invention provides a fluororesin for melt molding with excellent wear resistance, which is composed of 94 to 40% by weight of fluororesin and 5 to 60% by weight of wollastonite. It is a composition. Although an aqueous dispersion consisting of a fluororesin and calcium metasilicate is known (Japanese Patent Application Laid-Open No. 150454/1983), a melt-molding composition consisting of a fluororesin and wollastonite is not yet known. Furthermore, the excellent anti-wear effects of such compositions are not known at all. The effect of improving wear resistance is specifically achieved by incorporating wollastonite into the fluororesin. Fluorine resin compositions containing fillers other than wollastonite, such as glass fiber, graphite, calcium carbonate, talc, glass beads, molybdenum disulfide, carbon fiber, copper, aluminum, and mica, were also used in comparative examples. As shown, the wear resistance is improved to some extent, but it is still not sufficient. The present invention will be specifically explained below. Examples of fluororesins preferably used in the present invention include polytetrafluoroethylene (PTFE), polychlorotrifluoroethylene (POTFE), polyvinylidene fluoride (PVdF), polyvinyl fluoride (PVF), and tetrafluoroethylene-hexafluoroethylene. Fluoropropylene copolymer (FEP), tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer (PFA), tetrafluoroethylene-ethylene copolymer (ETFE), chlorotrifluoroethylene-ethylene copolymer (ECTFE), etc. These can also be used as a mixture. Among these, PFA is more preferably used. The wollastonite used in the present invention is mostly naturally occurring calcium metasilicate. Wollastonite is also sold by Processed Minerals Inc., for example. Wollastonite has good dispersibility in resins and can be added to resins without any special surface treatment.
In addition, by coating wollastonite with a silane coupling agent, strength, electrical, and thermal properties can be improved, water resistance is increased, viscosity is lowered, workability is improved, and high filling is possible. There is. The amount of wollastonite added is 5 to 60% by weight of the entire composition consisting of fluororesin and wollastonite.
is preferable, and more preferably 20 to 50% by weight. If the amount added is less than 5% by weight, the effect of improving strength and wear resistance will be small, and sufficient sliding characteristics and wear resistance will not be obtained. On the other hand, if it exceeds 60% by weight, wollastonite will not be uniformly dispersed, resulting in poor fluidity during melting, making it impossible to obtain a molded product with a good surface appearance. In addition, the strength decreases, and the sliding properties and wear resistance also deteriorate. In particular, when it comes to wear resistance, the mating material made of soft material is likely to wear out. In order to further improve the lubricity of the resin composition of the present invention, highly crystalline heat-resistant resins such as oxybenzoyl polyester, organic polymers such as aromatic polyamide resins such as "Kevlar"(trademark); It is also possible to add small amounts of solid lubricants such as molybdenum sulfide; silicone oil; metal soaps made of metal salts of organic acids; and waxes. The mixing method for obtaining the resin composition of the present invention is to dry blend the fluororesin and wollastonite using a mixer such as a Henschel mixer or a super mixer, and then melt-knead the mixture using a single-screw or multi-screw extruder. A common method is to extrude into strands and pelletize with a cutter, but the method is not particularly limited to this method. Further, for example, fluororesins such as PTFE which cannot be pelletized by the above method may be mixed in a Henschel mixer, a super mixer, etc., and then used as is for the next molding. Injection molding is generally applied to obtain bearings, bushes, sliders, gears, separators, and other molded products from the composition of the present invention obtained in this way. For molded products, sheets are formed by extrusion and punched into the shape of a slider, or materials such as round bars, flat plates, and cylinders are formed using a ram extruder, single-screw extruder, or twin-screw extruder, and then machined from this material. Products such as bearings, bushes, gears, separation claws, etc. can also be obtained. <Examples> The present invention will be explained below with reference to Examples. Example 1 PFA resin (340J manufactured by Mitsui Fluorochemical Co., Ltd.) as a fluorine-based resin and various fillers were mixed in a Henschel mixer in a composition ratio shown in Table 1.
Extrusion granulation was performed using a shaft type extruder (Tanabe Kikai 30φ extruder) at a cylinder temperature of 310 to 350°C to obtain pellets. These were molded into bending test pieces and abrasion test pieces (30□ x 3t square plate) using an injection molding machine (Neomatsu 25/140, manufactured by Sumitomo Heavy Industries).
Bending properties were measured according to ASTM D790-49T.
The friction and wear characteristics were measured using a Suzuki type abrasion tester at room temperature under the conditions of pressure P = 10 Kg/cm 2 and speed of 20 m/min.
φ, contact area 1 cm 2 ), and the friction coefficient and wear amount of each test piece were measured after running for 1 hour. The results are shown in Table 1, and the composition of the present invention exhibits excellent wear resistance.
【表】
実施例 ２
実施例１と同様のフツ素系樹脂に実施例１と同
様の各種充填剤を表２に示す組成比となるように
ヘンシエルミキサーで混合し、実施例１と同じ方
法で摩耗試験片を成形し、圧力をＰ＝５Kg／cm2と
15Kg／cm2の２水準にする以外は実施例１と同様に
して摩擦係数、摩耗量を測定した。結果は表２の
通りである。本発明組成物は優れた耐摩耗性を示
した。[Table] Example 2 The same fluororesin as in Example 1 was mixed with various fillers as in Example 1 using a Henschel mixer so as to have the composition ratio shown in Table 2, and the same method as in Example 1 was carried out. A wear test piece was molded with a pressure of P=5Kg/ cm2 .
The coefficient of friction and amount of wear were measured in the same manner as in Example 1 except that two levels of 15 kg/cm 2 were used. The results are shown in Table 2. The composition of the present invention exhibited excellent wear resistance.
【表】
実施例 ３〜７
実施例１と同様のフツ素系樹脂にワラストナイ
トを表３に示す配合比になるようにヘンシエルミ
キサーで混合し、池貝鉄工(株)製“PCM−45”２
軸押出機を用いてシリダー温度320〜350℃でペレ
ツト化した。ワラストナイト80wt％の場合はペ
レツト化が困難であつた。得られたレツトを用い
射出成形機（住友重機製“ネオマツト“75/140）
を用い曲げ試験片を成形し、曲げ特性を測定した
結果及び実施例１と同様の条件で摩擦摩耗特性を
測定した結果を表３に示す。また、得られたペレ
ツトを用い溶融粘度を高化式フローテスターで温
度340℃、圧力20Kg／cm2、滞留10分、ノズル１mm
φ×２で測定した結果を表４に示す。[Table] Examples 3 to 7 The same fluorocarbon resin as in Example 1 and wollastonite were mixed in a Henschel mixer at the compounding ratio shown in Table 3, and "PCM-45" manufactured by Ikegai Tekko Co., Ltd. ”2
It was pelletized using a screw extruder at a cylinder temperature of 320-350°C. When wollastonite was 80 wt%, it was difficult to pelletize it. An injection molding machine (“Neo Matsut” 75/140 manufactured by Sumitomo Heavy Industries) was used using the obtained lettuce.
Table 3 shows the results of measuring the bending properties of a bending test piece and measuring the friction and wear properties under the same conditions as in Example 1. In addition, using the obtained pellets, the melt viscosity was measured using an enhanced flow tester at a temperature of 340°C, a pressure of 20 kg/cm 2 , a residence time of 10 minutes, and a nozzle of 1 mm.
Table 4 shows the results measured at φ×2.
【表】
ず
[Table] Zu
【表】
実施例 ８
次の(A)〜(E)の樹脂および組成物を準備した。
(A)：実施例１と同様の方法により得たワラストナ
イトを40重量％含有するPFA樹脂組成物、
(B)：PTFE樹脂を20重量％含有するアモコ社製ポ
リアミドイミド樹脂“トーロン”4000Tの組成
物（TI−5013F20）、
(C)：PTFE樹脂を40重量％含有するアモコ社製ポ
リアミドイミド樹脂“トーロン”4000Tの組成
物（TI−5013F40）、
(D)：住友化学(株)製ポリオキシベンゾイル樹脂“エ
コノール”2000、
(E)：東洋ベアリング(株)製ガラス繊維入りPTFE樹
脂“ルーロン”LD。30□
×3t角板。
これらの樹脂および組成物(A)〜(D)から、射出成
形により30□
×3tの摩耗試験片を得た。このうち
(B)〜(C)は常法によりポストキユアを行なつた。こ
れら摩耗試験片に対し、スラスト摩耗テストを島
津製鈴木式摩耗試験機を用いて、相手材にアルミ
5056の接触面積２cm2になるリングを用い雰囲気温
度180℃で面圧（荷重）10Kg／cm2、速度７ｍ／分
で摩擦摩耗特性を経時的に測定した。結果は第１
図の通りとなり本発明の組成物(A)は優れた耐摩耗
性を示した。
〈発明の効果〉
本発明のフツ素系樹脂組成物は、低摩擦係数を
有しかつ耐摩耗性に優れ、高温、高荷重下での圧
縮強度、曲げ強度、曲げ弾性率において優れてい
る。従つて、本発明の組成物はOA機器等の摺動
部材その他一般工業用機器の摺動部材等の摺動用
途に適用可能であり、さらに、食品加工用機器の
ごとく被加工品の汚染が許されない機械装置のオ
イルレス軸受け、ガイドロール、ガイド板等にも
有用な材料となり得る。[Table] Example 8 The following resins and compositions (A) to (E) were prepared. (A): PFA resin composition containing 40% by weight of wollastonite obtained by the same method as in Example 1, (B): Polyamideimide resin "Torlon" 4000T manufactured by Amoco, containing 20% by weight of PTFE resin. Composition (TI-5013F20), (C): Composition of polyamideimide resin "Torlon" 4000T manufactured by Amoco containing 40% by weight of PTFE resin (TI-5013F40), (D): Manufactured by Sumitomo Chemical Co., Ltd. Polyoxybenzoyl resin “Econol” 2000, (E): Glass fiber-filled PTFE resin “Rulon” LD manufactured by Toyo Bearing Co., Ltd. 30□ ×3 t square plate. From these resins and compositions (A) to (D), wear test pieces of 30□×3t were obtained by injection molding. this house
In cases (B) to (C), post-cure was performed using a conventional method. A thrust wear test was performed on these wear test pieces using a Shimadzu Suzuki type wear tester, and the mating material was aluminum.
Using a ring with a contact area of 2 cm 2 of 5056, friction and wear characteristics were measured over time at an ambient temperature of 180° C., a surface pressure (load) of 10 Kg/cm 2 and a speed of 7 m/min. The result is the first
As shown in the figure, the composition (A) of the present invention showed excellent wear resistance. <Effects of the Invention> The fluororesin composition of the present invention has a low coefficient of friction and excellent wear resistance, and is excellent in compressive strength, bending strength, and bending modulus under high temperature and high load. Therefore, the composition of the present invention can be applied to sliding members such as office automation equipment and other general industrial equipment, and furthermore, it can be used to prevent contamination of processed products such as food processing equipment. It can also be a useful material for oil-less bearings, guide rolls, guide plates, etc. of mechanical devices that are not permitted.
第１図は本発明の実施例８における本発明組成
物の耐摩耗特性を説明するための、時間と摩耗深
さとの関係を示す図である。
Ａ：本発明組成物
FIG. 1 is a diagram showing the relationship between time and wear depth for explaining the wear resistance properties of the composition of the present invention in Example 8 of the present invention. A: Composition of the present invention
Claims (1)
イト５〜60重量％からなる耐摩耗性の優れた溶融
成形用フツ素系樹脂組成物。 ２ フツ素系樹脂がテトラフルオロエチレン−パ
ーフルオロアルキルビニルエーテル共重合体であ
る特許請求の範囲第１項記載の耐摩耗性の優れた
溶融成形用フツ素系樹脂組成物。[Scope of Claims] 1. A fluororesin composition for melt molding with excellent wear resistance, comprising 95 to 40% by weight of fluororesin and 5 to 60% by weight of wollastonite. 2. The fluororesin composition for melt molding with excellent wear resistance according to claim 1, wherein the fluororesin is a tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11670084A JPS60262844A (en) | 1984-06-08 | 1984-06-08 | Fluororesin composition for melt processing excellent in abrasion resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11670084A JPS60262844A (en) | 1984-06-08 | 1984-06-08 | Fluororesin composition for melt processing excellent in abrasion resistance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60262844A JPS60262844A (en) | 1985-12-26 |
| JPH0535183B2 true JPH0535183B2 (en) | 1993-05-25 |
Family
ID=14693673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11670084A Granted JPS60262844A (en) | 1984-06-08 | 1984-06-08 | Fluororesin composition for melt processing excellent in abrasion resistance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60262844A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3410487B2 (en) * | 1992-05-21 | 2003-05-26 | ダイキン工業株式会社 | Resin composition for sliding parts |
| JPH07228744A (en) * | 1994-02-19 | 1995-08-29 | Nippon Pillar Packing Co Ltd | Fluororesin composition for sliding member |
| US6020417A (en) * | 1997-01-24 | 2000-02-01 | Ntn Corporation | Sheet feed members for image forming devices |
-
1984
- 1984-06-08 JP JP11670084A patent/JPS60262844A/en active Granted
Non-Patent Citations (1)
| Title |
|---|
| TEFLON PFA=1979 * |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60262844A (en) | 1985-12-26 |
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