JPH02118216A - Porous sliding member - Google Patents
Porous sliding memberInfo
- Publication number
- JPH02118216A JPH02118216A JP27007788A JP27007788A JPH02118216A JP H02118216 A JPH02118216 A JP H02118216A JP 27007788 A JP27007788 A JP 27007788A JP 27007788 A JP27007788 A JP 27007788A JP H02118216 A JPH02118216 A JP H02118216A
- Authority
- JP
- Japan
- Prior art keywords
- ptfe
- mechanical strength
- porosity
- resin
- lowering
- 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
- 239000000463 material Substances 0.000 claims abstract description 23
- 229920005989 resin Polymers 0.000 claims abstract description 14
- 239000011347 resin Substances 0.000 claims abstract description 14
- 239000000314 lubricant Substances 0.000 claims abstract description 11
- 229920006015 heat resistant resin Polymers 0.000 claims abstract description 9
- 239000007787 solid Substances 0.000 claims abstract description 8
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000004810 polytetrafluoroethylene Substances 0.000 abstract description 13
- 229920001343 polytetrafluoroethylene Polymers 0.000 abstract description 13
- 238000005299 abrasion Methods 0.000 abstract description 6
- 239000010687 lubricating oil Substances 0.000 abstract description 4
- 230000001050 lubricating effect Effects 0.000 abstract description 3
- 230000001771 impaired effect Effects 0.000 abstract description 2
- 239000011148 porous material Substances 0.000 abstract description 2
- 150000001875 compounds Chemical class 0.000 abstract 2
- 239000000203 mixture Substances 0.000 description 8
- 239000000843 powder Substances 0.000 description 5
- 230000014759 maintenance of location Effects 0.000 description 4
- 230000013011 mating Effects 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 1
- 239000012766 organic filler Substances 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Sliding-Contact Bearings (AREA)
Abstract
Description
【発明の詳細な説明】 ［発明の技術分野］ 本発明は多孔質摺動材の改良に関する。[Detailed description of the invention] [Technical field of invention] The present invention relates to improvements in porous sliding materials.
［従来の技術と課題］
周知の如＜、複写機やプリンター等の軸受等の摺動を必
要とすべき部分には摺動材が用いられている。従来、か
かる摺動けの代表的な材質として、四弗化エチレン樹脂
（ＰＴＦＥ）に各種無機、有機フィラーが混合された組
成物が用いられている。[Prior Art and Problems] As is well known, sliding materials are used in parts of copiers, printers, etc. that require sliding, such as bearings. Conventionally, a composition in which various inorganic and organic fillers are mixed with tetrafluoroethylene resin (PTFE) has been used as a typical material for such sliding.
ここで、フィラーを混入したのは、この組成物のベース
樹脂であるＰＴＦＥ単体が耐熱性及び耐薬品性に優れる
とともに、摩擦係数は小さく良好な樹脂であるが、耐摩
耗性や機械的強度は必ずしも良好でないため、それらを
向上させる目的のためである。Here, the filler was mixed because PTFE alone, which is the base resin of this composition, has excellent heat resistance and chemical resistance, and has a small coefficient of friction, but it has poor abrasion resistance and mechanical strength. This is for the purpose of improving them because they are not necessarily good.
しかし、上記のようなＰＴＦＥをベース樹脂とした組成
物では油の保持性が悪い。従って潤滑油を必要とするよ
うな摺動箇所に既存のフィラーが混入された摺動材を用
いても、摩擦係数と摩耗係数の向上は期待できず、また
特に摩耗係数が大きいことから寿命が短いという欠点を
有する。However, the above-mentioned compositions using PTFE as a base resin have poor oil retention properties. Therefore, even if sliding materials mixed with existing fillers are used in sliding parts that require lubricating oil, improvements in the friction coefficient and wear coefficient cannot be expected, and the wear coefficient is especially high, so the service life will be shortened. It has the disadvantage of being short.
本発明は上記事情に鑑みてなされたもので、ＰＴＦＨに
耐熱性樹脂及び固体用滑剤を添加するとともに気孔率を
１０〜２０％とすることによって、潤滑油の保持性を改
善し、もって摩擦特性や耐摩耗性に優れた長寿命な多孔
質摺動↑Ａを提供することを目的とする。The present invention was made in view of the above circumstances, and by adding a heat-resistant resin and a solid lubricant to PTFH and setting the porosity to 10 to 20%, the lubricating oil retention property is improved and the friction properties are improved. The purpose of the present invention is to provide a long-life porous sliding member ↑A with excellent wear resistance and abrasion resistance.
［課題を解決するための手段］
本発明は、四弗化エチレン樹脂４０〜７０重量％、耐熱
性樹脂２０〜４０重量％、及び固体潤滑剤０〜３０重量
％を混合した組成物からなり、１０〜２０％の気孔率を
有するこを特徴とする多孔質摺動材である。[Means for Solving the Problems] The present invention consists of a composition in which 40 to 70% by weight of a tetrafluoroethylene resin, 20 to 40% by weight of a heat-resistant resin, and 0 to 30% by weight of a solid lubricant are mixed, It is a porous sliding material characterized by having a porosity of 10 to 20%.
本発明において、ＰＴＦＥを４０〜７０重量％とするの
は、４０重量％未満ではＰＴＦＥの潤滑特性が十分でな
く、７０重量％を越えると機械的強度の低下がみられる
為である。In the present invention, the content of PTFE is 40 to 70% by weight because if it is less than 40% by weight, the lubricating properties of PTFE are insufficient, and if it exceeds 70% by weight, a decrease in mechanical strength is observed.
本発明において、耐熱性樹脂を２０〜４０重量％とする
のは多孔質体による機械的強度の低下を補うためであり
、２０重量％未満ではその効果が期待できず、４０重量
％を越えるとＰＴＦＥの摩擦特性が損われる為である。In the present invention, the reason why the heat-resistant resin is set at 20 to 40% by weight is to compensate for the decrease in mechanical strength due to the porous material; if it is less than 20% by weight, no effect can be expected, and if it exceeds 40% by weight, This is because the frictional properties of PTFE are impaired.
前記耐熱性樹脂としては、ポリフェニルスルファイド（
Ｐ Ｐ Ｓ）樹脂、ポリイミド（Ｐり樹脂等ＰＴＦＥ樹
脂の製造条件に耐えうるちのが挙げられる。As the heat-resistant resin, polyphenylsulfide (
Examples include PPS) resin, polyimide (P resin, etc.) that can withstand the manufacturing conditions of PTFE resin.
本発明において、固体潤滑剤を０〜３０重量％とするの
は、３０１１１ｍ％を越えると機械的強度の低下が著し
く又潤滑効果もこれ以上期待できない為である。なお、
潤滑剤は少量でも含むことが望ましい。前記固体潤滑剤
としては、黒鉛、二硫化モリブデン、ＢＮ、ＷＳ２等の
粉末、カーボン繊維、アミド繊維等の無機、有機の繊維
物等が挙げられる。In the present invention, the solid lubricant is contained in an amount of 0 to 30% by weight because if it exceeds 30111% by weight, the mechanical strength will drop significantly and no more lubricating effect can be expected. In addition,
It is desirable to include even a small amount of lubricant. Examples of the solid lubricant include powders such as graphite, molybdenum disulfide, BN, and WS2, and inorganic and organic fibers such as carbon fiber and amide fiber.
本発明において、摺動材の気孔率を１０〜２０％とする
のは、１０％未満では油脂分を十分含浸せず、２０％を
越えると耐摩耗性や機械的強度が低下するからである。In the present invention, the porosity of the sliding material is set to 10 to 20% because if it is less than 10%, it will not be sufficiently impregnated with oil and fat, and if it exceeds 20%, the abrasion resistance and mechanical strength will decrease. .
［作用）
本発明によれば、ＰＴＦＥ、耐熱性樹脂及び固体潤滑剤
を夫々適宜な割合で混合して組成物を形成し、この組成
物により気孔率１０〜２０％の摺動材とするため、ＰＴ
ＦＨの潤滑油の保持性を改良でき、油脂分を十分含浸し
て摩擦、摩耗特性の向上を図ることができる。[Function] According to the present invention, a composition is formed by mixing PTFE, a heat-resistant resin, and a solid lubricant in appropriate proportions, and this composition is used to form a sliding material with a porosity of 10 to 20%. , P.T.
The lubricating oil retention of FH can be improved, and the friction and wear characteristics can be improved by sufficiently impregnating oil and fat.
以下、本発明の実施例について説明する。Examples of the present invention will be described below.
［実施例１］
まず、ＰＴＦＥ樹脂粉末６０重量％、３５メツシユを通
過したＰＰＳ樹脂粉末３０重量％、及び黒鉛１０重量％
をヘンシェルミキサーで混合する。[Example 1] First, 60% by weight of PTFE resin powder, 30% by weight of PPS resin powder that passed through 35 meshes, and 10% by weight of graphite.
Mix in a Henschel mixer.
次に、得られた組成物を成形圧カフ ００ｋｇ ｒ／ｃ
Ｉ＃、加圧保持時間２分の条件下で予備成形した。次い
で、その予備成形体を室温から６０℃／ｈｒの割合で２
８０℃まで上昇させて６０分間保持した後、上記と同割
合で３７０℃まで上昇させて４時間保持し、更に３０℃
／ｈｒの割合で室温まで下げ、気孔率１５％の摺動材を
得た。Next, the obtained composition was applied to a molding pressure cuff of 00kg r/c.
Preforming was carried out under the conditions of I# and pressure holding time of 2 minutes. Next, the preform was heated at a rate of 60°C/hr from room temperature for 2
After raising the temperature to 80°C and holding it for 60 minutes, raising it to 370°C at the same rate as above and holding it for 4 hours, and then further raising it to 30°C.
/hr to obtain a sliding material with a porosity of 15%.
実施例１によれば、ＰＴＦＥ樹脂粉末にＰＰＳ樹脂粉末
及び黒鉛を適宜混合、成形等して気孔率１５％の摺動材
とするため、油脂分を十分含浸し、摩擦特性や耐摩耗性
を著しく向上できる。According to Example 1, in order to make a sliding material with a porosity of 15% by appropriately mixing PTFE resin powder, PPS resin powder and graphite, and molding, etc., it was sufficiently impregnated with oil and fat to improve friction properties and wear resistance. It can be significantly improved.
事実、第３図に示すスラスト耐久比較試験で摩擦係数を
調べたところ、第１図に示すような結果が得られた。但
し、第３図において、１はトルク検出レバー ２は摺動
材（寸法３０ｘ３０ｘ３ｔ）、３は相手材（例えばφ２
０Ｘφ２５．６×Ｌ２０でＳＵＳ製） ４は摺動材と相
手材とを平行にするための調芯平行板。また、試験条件
としてＰ（荷重）は１０ ｋｇ ／ ｃｄ 、速度３５
（ｍ／ｗｉｎ）、雰囲気温度は室温とする。第１図より
本発明に係る摺動材が従来のそれと比べ摩擦係数が小さ
いことが明らかである。また、従来の場合試験時間５０
時間で摩耗量０．０４ｍｍで摩耗係数４．６Ｘ１０″６
（ｍｍ／ ｋｇ ｆ／ ｃｄ −ｍ ／ ｌｌ１ｉｎｈ
ｒ）であるのに対し本発明の場合摩耗ｍｏ、０２で摩擦
係数１．ｌＸｌ０″６であった。同様に（但し、荷重３
０ｋｇ／ｃｊ、速度１０ ｍ／ｍｉｎ ） 、相手材が
Ａノの場合についても摩擦係数を調べたところ、第２図
に示す特性図が得られた。この場合従来は摩耗量０．０
５ｍ＋ａ、摩耗係数３．３ｘｌＯ″６であったが、本発
明の場合摩耗ｍＯ，０１ｍｍ、摩耗係数３．３Ｘ１０−
７であった。In fact, when the friction coefficient was investigated in the thrust durability comparison test shown in FIG. 3, the results shown in FIG. 1 were obtained. However, in Fig. 3, 1 is a torque detection lever, 2 is a sliding material (dimensions 30x30x3t), and 3 is a mating material (for example, φ2
(0xφ25.6xL20 made of SUS) 4 is an alignment parallel plate to make the sliding material and the mating material parallel. In addition, the test conditions were P (load) of 10 kg/cd, speed of 35
(m/win), and the ambient temperature is room temperature. It is clear from FIG. 1 that the sliding material according to the present invention has a smaller coefficient of friction than the conventional sliding material. In addition, in the conventional case, the test time was 50
Wear amount per hour is 0.04mm and wear coefficient is 4.6X10″6
(mm/kg f/cd-m/ll1inh
r), whereas in the case of the present invention, the friction coefficient is 1 at abrasion mo of 02. lXl0″6. Similarly (however, load 3
0 kg/cj, speed 10 m/min), and when the mating material was A, the friction coefficient was also investigated, and the characteristic diagram shown in FIG. 2 was obtained. In this case, conventionally the wear amount was 0.0
5m+a, wear coefficient 3.3xlO''6, but in the case of the present invention, wear mO, 01mm, wear coefficient 3.3x10-
It was 7.
［発明の効果］
以上詳述した如く本発明によれば、ＰＴＦＨに耐熱性樹
脂及び固体潤滑剤を添加するとともに気孔率を１０〜２
０％とすることによって、従来のＰＴＦＥの場合と比べ
潤滑油の保持性を改善し、もって摩擦特性や耐摩耗性に
優れた長寿命な多孔質摺動材を提供できる。[Effects of the Invention] As detailed above, according to the present invention, a heat-resistant resin and a solid lubricant are added to PTFH, and the porosity is increased from 10 to 2.
By setting it to 0%, it is possible to improve lubricant retention compared to conventional PTFE, thereby providing a long-life porous sliding material with excellent friction characteristics and wear resistance.
第１図及び第２図は夫々本発明及び従来の摺動材の摩擦
係数と試験時間との関係を示す特性図、第３図はスラス
ト耐久比較試験装置の説明図であ
る。
トルク検出レバー
２・・・摺動材、
３・・・相手
材、
４・・・調芯平行板。FIGS. 1 and 2 are characteristic diagrams showing the relationship between the friction coefficient and test time of the present invention and conventional sliding materials, respectively, and FIG. 3 is an explanatory diagram of a thrust durability comparison test device. Torque detection lever 2...Sliding material, 3...Mating material, 4...Aligning parallel plate.
Claims (1)
〜４０重量％、及び固体潤滑剤０〜３０重量％を混合し
た組成物からなり、１０〜２０％の気孔率を有すること
を特徴とする多孔質摺動材。Tetrafluoroethylene resin 40-70% by weight, heat-resistant resin 20%
40% by weight of a porous sliding material and a solid lubricant of 0 to 30% by weight, the porous sliding material having a porosity of 10 to 20%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27007788A JPH02118216A (en) | 1988-10-26 | 1988-10-26 | Porous sliding member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27007788A JPH02118216A (en) | 1988-10-26 | 1988-10-26 | Porous sliding member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02118216A true JPH02118216A (en) | 1990-05-02 |
Family
ID=17481207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27007788A Pending JPH02118216A (en) | 1988-10-26 | 1988-10-26 | Porous sliding member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02118216A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6113278A (en) * | 1994-12-27 | 2000-09-05 | Ntn Corporation | Rolling bearing for a dental instrument hand-piece |
| JP2010159809A (en) * | 2009-01-07 | 2010-07-22 | Ntn Corp | Seat reclining device bearing bush, and seat reclining device |
| JP2016044220A (en) * | 2014-08-21 | 2016-04-04 | ニチアス株式会社 | Sliding member and method for producing the same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01307514A (en) * | 1988-06-03 | 1989-12-12 | Nitto Denko Corp | Porous sheet for sliding and adhesive sheet for sliding |
-
1988
- 1988-10-26 JP JP27007788A patent/JPH02118216A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01307514A (en) * | 1988-06-03 | 1989-12-12 | Nitto Denko Corp | Porous sheet for sliding and adhesive sheet for sliding |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6113278A (en) * | 1994-12-27 | 2000-09-05 | Ntn Corporation | Rolling bearing for a dental instrument hand-piece |
| JP2010159809A (en) * | 2009-01-07 | 2010-07-22 | Ntn Corp | Seat reclining device bearing bush, and seat reclining device |
| JP2016044220A (en) * | 2014-08-21 | 2016-04-04 | ニチアス株式会社 | Sliding member and method for producing the same |
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