JPS6337198A - Sliding member composition - Google Patents
Sliding member compositionInfo
- Publication number
- JPS6337198A JPS6337198A JP18104186A JP18104186A JPS6337198A JP S6337198 A JPS6337198 A JP S6337198A JP 18104186 A JP18104186 A JP 18104186A JP 18104186 A JP18104186 A JP 18104186A JP S6337198 A JPS6337198 A JP S6337198A
- Authority
- JP
- Japan
- Prior art keywords
- sliding
- friction
- sliding member
- polyethylene
- member composition
- 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 11
- 239000004698 Polyethylene Substances 0.000 claims abstract description 10
- -1 polyethylene Polymers 0.000 claims abstract description 10
- 229920000573 polyethylene Polymers 0.000 claims abstract description 10
- 229920006324 polyoxymethylene Polymers 0.000 claims abstract description 7
- 229930182556 Polyacetal Natural products 0.000 claims abstract description 6
- 239000003273 ketjen black Substances 0.000 claims abstract description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 239000006230 acetylene black Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 4
- 230000001050 lubricating effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 17
- 230000000052 comparative effect Effects 0.000 description 7
- 230000005611 electricity Effects 0.000 description 3
- 230000013011 mating Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 229920005177 Duracon® POM Polymers 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 241000282320 Panthera leo Species 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 241000872198 Serjania polyphylla Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000006258 conductive agent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
Landscapes
- Sliding-Contact Bearings (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Lubricants (AREA)
Abstract
Description
【発明の詳細な説明】
(al産業上の利用分野
本発明は事務機、事務用電子機器等の紙送り部で使用さ
れる比較的低速、軽負荷の無給油軸受、歯車などの摺動
材料組成物に関するもので、低摩擦、低摩耗で摩擦音、
所謂「鳴き」が生じず、かつ静電気の蓄積による誤動作
が防止できる摺動性能の優れた導電性材料を提供する為
になされたものである。Detailed Description of the Invention (Al Industrial Field of Application) The present invention is applied to sliding materials such as relatively low-speed, light-load oil-free bearings and gears used in paper feeding sections of office machines, office electronic equipment, etc. Concerning the composition, it has low friction, low wear, and low fricative noise.
This was done in order to provide a conductive material with excellent sliding performance that does not cause so-called "squeal" and can prevent malfunctions due to accumulation of static electricity.
(bl従来の技術
従来、事務機、事務用電子機器等の紙送り部に使用され
る比較的軽負荷の軸受、歯車等の摺動部材には、導電性
ポリアセクール樹脂が低コスト摺動部材として広く使用
されている。(bl Conventional Technology) Conventionally, conductive polyacecool resin has been used as a low-cost sliding member for relatively light-load bearings, gears, and other sliding members used in paper feeding parts of office machines, office electronic equipment, etc. Widely used.
然しなから、従来の導電性摺動材料は自己潤滑件と耐摩
耗性には優れた性質を有するが、摩擦係数が若干高めで
あり、しかも摺動中に摩擦係数が変動する為、スティッ
クスリップが生じ、不快な摩擦音所謂「鳴き」を発生す
る欠点があり、発生の都度摺動表面にグリースやオイル
等の潤滑材を塗布してこの欠点を改善する必要があった
。However, although conventional conductive sliding materials have excellent self-lubricating properties and wear resistance, they have a slightly higher friction coefficient, and the friction coefficient fluctuates during sliding, resulting in stick-slip. This has the disadvantage of generating an unpleasant frictional sound, so-called "squeak," and it has been necessary to remedy this defect by applying a lubricant such as grease or oil to the sliding surface each time it occurs.
又、従来材料の歯車同志を組合せる場合、摩耗が急増す
る欠点も有していた。Furthermore, when gears made of conventional materials are combined, there is a drawback that wear increases rapidly.
tc+発明が解決しようとする問題点
前述のように、現在汎用されているポリアセクール製導
電性摺動材料は「鳴き」発生の主原因と考えられている
高摩擦、摩擦係数の変動並びにプラス千ツク同志が摺動
する場合の摩耗の点に問題が存在した。Problems that the tc+ invention aims to solve As mentioned above, the currently widely used conductive sliding materials made of polyacecool suffer from high friction, fluctuations in the coefficient of friction, and high friction, which are considered to be the main causes of "squeal". Problems existed in terms of wear when the comrades were sliding.
本発明者等は、上記のような従来の摂動材料の欠点を解
消し低摩擦で且つ摩擦係数の変動の小さい高性能の摺動
部材組成物を追求し、「鳴き」の発生を防止すると共に
、耐摩耗性を改善することを目的として研究を重ねて本
発明を完成したものである。The present inventors solved the drawbacks of conventional perturbation materials as described above, and pursued a high-performance sliding member composition with low friction and small fluctuations in the coefficient of friction, thereby preventing the occurrence of "squeal" and The present invention was completed through repeated research aimed at improving wear resistance.
(d)問題点を解決する為の手段
本発明者等は、先に、ポリアセクールにMI(メルトイ
ンデックス)10以上のポリエチレンを適量配合するこ
とによって、ポリアセタールより細辛15で摩擦係数の
経時変動が少なく「鳴き」が発生しない摺動材料ができ
ることを見出した(特願昭6l−098999)が、こ
の材料に更にケッチェンブラック、アセチレンブラック
等の導電性付与剤を適量配合することによって本発明を
完成させたものである。(d) Means for Solving the Problems The inventors of the present invention first blended an appropriate amount of polyethylene with an MI (melt index) of 10 or more into polyacetal, so that the coefficient of friction changed over time with a 15% fineness compared to polyacetal. It was discovered that a sliding material that generates little "squeak" can be produced (Japanese Patent Application No. 61-098999), but the present invention can be achieved by further adding an appropriate amount of conductivity imparting agent such as Ketjen black or acetylene black to this material. It has been completed.
この際ポリエチレンの配合量としては、全体に対し重量
比2〜30%、導電性付与剤の配合量としては全体に対
し3〜10%とするのが適切である。In this case, it is appropriate that the amount of polyethylene blended is 2 to 30% by weight based on the whole, and the blended amount of the conductivity imparting agent is 3 to 10% based on the whole.
この範囲は実験によって確L8シたものであって、ポリ
エチレンの配合口が30%を超えると、ポリアセクール
が本来有している剛性、強靭性が低下し変形し易くなっ
て実用性が低下する。This range has been established through experiments, and if the proportion of polyethylene exceeds 30%, the inherent rigidity and toughness of polyacecool will decrease and it will become easily deformed, reducing its practicality.
又ポリエチレンの配合量が2%以下となると摩擦低下の
効果が薄く「鳴き」を完全に防止するには不十分である
。Furthermore, if the amount of polyethylene is less than 2%, the effect of reducing friction will be weak and it will not be sufficient to completely prevent "squeal".
又、導電性付与剤の配合量は、3%以下では静電防止に
必要な10〜10部cmの体積抵抗値を得ることが出来
ない。Further, if the amount of the conductivity imparting agent is 3% or less, a volume resistivity of 10 to 10 parts cm, which is necessary for preventing static electricity, cannot be obtained.
静電防止に必要な導電性イ」与剤の量は実質的には3%
以上あればよいわけであり、上限値は特に制約を受ける
ものではないが、10%を超えると混練がや\困難にな
り、製造上から10%とするのが妥当である。The amount of conductive agent required to prevent static electricity is actually 3%.
The upper limit is not particularly restricted as long as it is above 10%, but if it exceeds 10%, kneading becomes somewhat difficult, and from the viewpoint of manufacturing, it is appropriate to set it at 10%.
(e)作用
本発明は、ポリアセタールにM110以上のポリエチレ
ンの適量を相溶的に配合し且つ、導電性付与剤を適量配
合することによって、It7′擦係数が低下すると共に
摩擦係数の変動が少なく、摺動中の「鳴き」現象が発生
することなく且つ、耐摩耗性を一段と向上させたもので
ある。(e) Effect The present invention reduces the It7' coefficient of friction and reduces fluctuations in the coefficient of friction by blending an appropriate amount of polyethylene of M110 or more with polyacetal and an appropriate amount of a conductivity imparting agent. , the "squeal" phenomenon during sliding does not occur, and the wear resistance is further improved.
(f)実施例
以下に本発明による摺動部材組成物の実施例を従来の摺
動部材即ち、ポリアセクール導電性材料による比較例と
比較して説明する。(f) Examples Examples of the sliding member composition according to the present invention will be described below in comparison with a comparative example of a conventional sliding member, that is, a polyacecool conductive material.
実施例1゜
ポリアセクール(商品名ジュラコンM90、ポリプラス
チックス社製)85部にポリエチレン(血品名ペトロセ
ン248、MI20、東洋曹達社製)10部とケッチェ
ンブラック (商品名ライオンアクゾ社製)5部を配合
し、スクリュ一式押出機で混練ペレソ1−化した後、射
出成形により 10x200 x 6 t(1璽)坂を
成形した。ごの材料の体積抵抗値は、100cmであっ
た。Example 1 85 parts of polyacecool (product name: Duracon M90, manufactured by Polyplastics Co., Ltd.), 10 parts of polyethylene (product name: Petrocene 248, MI20, manufactured by Toyo Soda Co., Ltd.) and 5 parts of Ketjen Black (product name: manufactured by Lion Akzo Co., Ltd.) The mixture was mixed and kneaded using a single screw extruder, and then molded into a 10 x 200 x 6 t (1 piece) slope by injection molding. The volume resistivity of the material was 100 cm.
実施例2゜
実施例1.と同じポリアセクールとポリエチレンにアセ
チレンブラック8部を配合し実施例1.と同様に板を成
形した。この材料の体積抵抗値は、5−+5
100cmであった。Example 2゜Example 1. Example 1 was prepared by blending 8 parts of acetylene black with the same polyacecool and polyethylene as in Example 1. A plate was formed in the same manner. The volume resistivity value of this material was 5-+5 100 cm.
比較例1゜
実施例1.で使用したポリアセクール単独で実施例1.
と同様に板を成形した。この材料の体積抵抗値は10部
cm以上であった。Comparative example 1゜Example 1. The polyacecool used in Example 1 was used alone.
A plate was formed in the same manner. The volume resistivity of this material was 10 parts cm or more.
比較例2゜
導電性ポリアセクール(商品名ジュラコンES5、ポリ
プラスチックス社M)を使用し、実施例1、と同様に板
を成形した。この材料の体積抵抗値は10Ω■であった
。Comparative Example 2 A plate was molded in the same manner as in Example 1 using conductive polyacecool (trade name: Duracon ES5, manufactured by Polyplastics Co., Ltd.). The volume resistivity value of this material was 10Ω■.
上記各例試験板から φ8X5(n+)のテストピース
(ピン)を機械加工で削り出し、ビンディスク型摩擦、
摩耗試験機により摺動性能を測定した結果は第1図(摩
擦係数の経時変化)、第2図(摩擦進行曲線〉及び第1
表(「鳴き」現象の有無、大小、摩擦係数の変動)に示
す通りであった。A test piece (pin) of φ8×5 (n+) was machined from each of the above test plates, and a bottle-disk type friction,
The results of measuring sliding performance using an abrasion tester are shown in Figure 1 (changes in friction coefficient over time), Figure 2 (friction progression curve), and Figure 1.
The results are as shown in the table (presence or absence of "squeal" phenomenon, magnitude, and variation in friction coefficient).
尚、この際の試験条件は次の通りである。The test conditions at this time were as follows.
速度 0.39m/S
接触圧力 3 kg / cd
相手軸 5US303ステンレス鋼相手面粗さ
Ra=0.12μm
潤滑 無潤滑(ドライ)
第1表
実施例3゜
実施例1.比較例1.゛比較例2の材料でφ100x6
tの円板を成形してこれをディスクとし、同じ材料のビ
ンと組合わせて摺動性能を調べた。Speed 0.39m/S Contact pressure 3 kg/cd Mating shaft 5US303 stainless steel mating surface roughness
Ra=0.12μm Lubrication Non-lubrication (dry) Table 1 Example 3゜Example 1. Comparative example 1.゛Material of Comparative Example 2 φ100x6
A disk of T was formed into a disk, and the sliding performance was examined by combining it with a bottle made of the same material.
結果は摺動時の鳴きは第2表、各周波数における騒音レ
ベルは第3図、摩耗進行曲線は第4図の通りであった。The results are as shown in Table 2 for the noise during sliding, Figure 3 for the noise level at each frequency, and Figure 4 for the wear progression curve.
尚、試験条件は相手ディスクがプラスチックであって接
触面圧が0.82 kg / crlである点以外は他
の実施例、比較例と同じである。The test conditions were the same as in the other Examples and Comparative Examples, except that the mating disk was made of plastic and the contact surface pressure was 0.82 kg/crl.
第2表
上記試験の結果に示すように、本発明の組成物は、従来
のポリアセクール及び導電性ポリアセタールより摩擦係
数が低く、且つ安定しているのみならず、摩耗も小さく
摺動時の「鳴き」も皆無であった。As shown in the above test results in Table 2, the composition of the present invention not only has a lower coefficient of friction and is more stable than conventional polyacetyls and conductive polyacetals, but also exhibits less wear and noise when sliding. ” were also absent.
(g)発明の効果
上述したように、本発明に係る摺動部材組成物は、従来
汎用されている導電性ポリアセクール。よりも自己潤滑
性、耐摩耗性が一段と向上し、而も従来材料が克服でき
なかった摺動中の「鳴き」が発生しない点で、極めて優
れた新規な摺動材料である。(g) Effects of the Invention As mentioned above, the sliding member composition according to the present invention is a conventionally widely used conductive polyacecool. It is a new sliding material that is extremely superior in that it has much improved self-lubricating properties and wear resistance, and does not generate the "squeak" during sliding that conventional materials could not overcome.
第1図は各実施例及び比較例の摩擦係数の経時変化を示
すグラフである。
第2図は同じく、摩耗進行曲線を示すグラフである。
第3図は、同種材料同志を摺動させた時の各周波数での
騒音レベルを示すグラフである。
第4図は、同種材料同志を摺動させた時の摩耗進行曲線
を示すグラフである。
特許出願人 スターライト工業株式会社第1図
2す?)怪〕)す2
3矧uJ1
4尤勘J2
第2図
摩謬2勉(km)
手続ネ市正書(自発)
昭和61年8月w日
2、発明の名称
摺動部材組成物
3、補正をする者
事件との関係 特許出願人
住 所 大阪市鶴見区徳庵1丁目1番71号明細署
の発明の詳細な説明の欄
−梓J′
いる。」を削除し、
「ポリアセクール、ポリアミド等の熱可塑性樹脂が低コ
スト摺動部材として広く使用されるが、必要時にはこれ
らの材料を導電化したものが使用される。」を挿入する
。
(2)第2頁第12、「摩擦音所謂」とあるを「摩擦音
、所謂」と訂正する。
(3)第2頁第12行目、及び第18行目に何れも「同
志」とあるを、「同士」と各1字訂正する。
(4)第4頁第10行目の、「わけであり、」を削除し
、「が増量によって更に導電性を太き(することができ
る。配合量の」を挿入する。
以上FIG. 1 is a graph showing changes over time in the coefficient of friction of each example and comparative example. Similarly, FIG. 2 is a graph showing a wear progression curve. FIG. 3 is a graph showing the noise level at each frequency when similar materials are slid together. FIG. 4 is a graph showing a wear progression curve when similar materials are slid together. Patent applicant Starlight Industries Co., Ltd. Figure 1 2. ) Su2 3 Haji uJ1 4 Yu Kan J2 Figure 2 Makoto 2 Tsutomu (km) Procedure Ne City Official Book (Spontaneous) August 1986 w Day 2, Title of Invention Sliding Member Composition 3, Relationship with the case of the person making the amendment Patent applicant address: 1-1-71 Tokuan, Tsurumi-ku, Osaka-shi Detailed description of the invention column - Azusa J'. " and insert "Thermoplastic resins such as polyacecool and polyamide are widely used as low-cost sliding members, but conductive versions of these materials are used when necessary." (2) On page 2, No. 12, the phrase "so-called fricatives" is corrected to "fricatives, so-called." (3) In the 12th line and the 18th line of page 2, correct the words "comrades" by one character each to "comrades". (4) In the 10th line of page 4, delete "Wake," and insert "It is possible to make the conductivity even thicker by increasing the amount of compounded amount."
Claims (1)
MI(メルトインデックス)10以上のポリエチレン2
〜30%、(ハ)ケッチェンブラック、アセチレンブラ
ック等の導電性付与剤3〜10%からなる摺動部剤組成
物。By weight, (a) polyacetal 95-60%, (b)
Polyethylene 2 with an MI (melt index) of 10 or more
(c) a sliding part agent composition comprising 3 to 10% of a conductivity imparting agent such as Ketjen black or acetylene black.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18104186A JPS6337198A (en) | 1986-07-31 | 1986-07-31 | Sliding member composition |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18104186A JPS6337198A (en) | 1986-07-31 | 1986-07-31 | Sliding member composition |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6337198A true JPS6337198A (en) | 1988-02-17 |
Family
ID=16093730
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18104186A Pending JPS6337198A (en) | 1986-07-31 | 1986-07-31 | Sliding member composition |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6337198A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0292746A2 (en) * | 1987-05-15 | 1988-11-30 | Mitsubishi Petrochemical Co., Ltd. | Polyacetal resin composition and sliding part made therefrom |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5064668A (en) * | 1973-10-08 | 1975-05-31 | ||
JPS512876A (en) * | 1974-06-25 | 1976-01-10 | Dai Ichi Seiko Co Ltd | JIKOKYUYUSEIZAIRYO |
JPS6051747A (en) * | 1983-08-31 | 1985-03-23 | Taiho Kogyo Co Ltd | Electroconductive sliding resin material |
-
1986
- 1986-07-31 JP JP18104186A patent/JPS6337198A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5064668A (en) * | 1973-10-08 | 1975-05-31 | ||
JPS512876A (en) * | 1974-06-25 | 1976-01-10 | Dai Ichi Seiko Co Ltd | JIKOKYUYUSEIZAIRYO |
JPS6051747A (en) * | 1983-08-31 | 1985-03-23 | Taiho Kogyo Co Ltd | Electroconductive sliding resin material |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0292746A2 (en) * | 1987-05-15 | 1988-11-30 | Mitsubishi Petrochemical Co., Ltd. | Polyacetal resin composition and sliding part made therefrom |
US4873282A (en) * | 1987-05-15 | 1989-10-10 | Mitsubishi Petrochemical Co., Ltd. | Polyacetal resin composition |
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