JPH0717830B2 - Carbon fiber reinforced thermoplastic resin composition - Google Patents
Carbon fiber reinforced thermoplastic resin compositionInfo
- Publication number
- JPH0717830B2 JPH0717830B2 JP61059421A JP5942186A JPH0717830B2 JP H0717830 B2 JPH0717830 B2 JP H0717830B2 JP 61059421 A JP61059421 A JP 61059421A JP 5942186 A JP5942186 A JP 5942186A JP H0717830 B2 JPH0717830 B2 JP H0717830B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- carbon fiber
- parts
- thermoplastic resin
- polyethylene
- 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 - Fee Related
Links
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は優れた摺動特性と加工性に優れた炭素繊維強化
樹脂組成物に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a carbon fiber reinforced resin composition having excellent sliding properties and workability.
［従来の技術］ 炭素繊維強化樹脂組成物は、その優れた機械的性質、熱
変形温度が評価され、耐摩擦・摩耗材として使われてい
る。しかし、軸受け等の耐摩擦・摩耗材として広範囲で
使用するには、限界PV値は高いものの、摩擦係数が充分
なものでなく、摩擦係数を低下させた材料が望まれてい
る。[Prior Art] Carbon fiber reinforced resin compositions have been evaluated as excellent mechanical properties and heat distortion temperatures, and are used as friction and wear resistant materials. However, for a wide range of use as a friction and wear resistant material for bearings and the like, a material having a high limit PV value but an insufficient friction coefficient and a reduced friction coefficient is desired.
摩擦係数を低下させる方法として、二硫化モリブデン，
グラファイト，テフロン粉末等の固体潤滑剤を添加する
方法が知られているが、ほとんど効果がない。As a method of reducing the friction coefficient, molybdenum disulfide,
A method of adding a solid lubricant such as graphite or Teflon powder is known, but it has almost no effect.
又、摩擦係数を低下させるために、炭素繊維と液体潤滑
剤を含浸した結晶性ポリオレフィン粉末を熱可塑性樹脂
に配合することが提案されている。（特開昭53−10814
2） ［発明が解決しようとする問題点］ しかしながら、この提案は、液体潤滑剤を結晶性ポリオ
レフィン粉末に含浸させる工程が必要になるため、混合
操作が、複雑になるという欠点があった。またこの提案
による材料では、確かに摩擦係数は低下するものの、液
体潤滑剤を含浸していることにより、加工時、例えば射
出成形機で成形する際、液体潤滑剤が遊離してきて、成
形品外観を商品価値のない程度まで汚染するという欠点
があった。Further, in order to reduce the coefficient of friction, it has been proposed to blend a crystalline polyolefin powder impregnated with carbon fibers and a liquid lubricant into a thermoplastic resin. (JP-A-53-10814
2) [Problems to be Solved by the Invention] However, this proposal has a drawback that the mixing operation becomes complicated because a step of impregnating the crystalline polyolefin powder with the liquid lubricant is required. In addition, although the friction coefficient certainly decreases with the material proposed by this proposal, since it is impregnated with a liquid lubricant, the liquid lubricant is released during processing, for example when molding with an injection molding machine, and the appearance of the molded product There was a drawback that it contaminates to the extent that it has no commercial value.
すなわち本発明は、摺動特性と加工性が共に優れた炭素
繊維強化熱可塑性樹脂組成物を提供するためになされた
ものである。That is, the present invention has been made in order to provide a carbon fiber reinforced thermoplastic resin composition having excellent sliding properties and workability.
［問題点を解決するための手段及び作用］ 本発明者らは、特定の重量平均分子量をもったポリエチ
レンを配合した炭素繊維強化熱可塑性樹脂組成物が、驚
くべきことに、摺動特性と加工性ともに満足することを
見いだし、本発明を成すに至ったのである。[Means and Actions for Solving Problems] The present inventors have surprisingly found that a carbon fiber-reinforced thermoplastic resin composition containing polyethylene having a specific weight average molecular weight has sliding properties and processing properties. They found that they were satisfied with their sex and completed the present invention.
即ち、本発明の目的は、ナイロン66、ナイロン46から選
ばれた少なくとも１つのポリアミドまたはポリエステル
である熱可塑性樹脂100重量部に対して炭素繊維を５〜1
30重量部と、重量平均分子量が10万〜50万であるポリエ
チレン３〜60重量部とからなる炭素繊維強化熱可塑性樹
脂組成物により初めて達成されたのである。That is, the object of the present invention is to add 5 to 1 parts by weight of carbon fiber to 100 parts by weight of thermoplastic resin which is at least one polyamide or polyester selected from nylon 66 and nylon 46.
It was achieved for the first time by a carbon fiber reinforced thermoplastic resin composition comprising 30 parts by weight and 3 to 60 parts by weight of polyethylene having a weight average molecular weight of 100,000 to 500,000.
本発明で言う熱可塑性樹脂としては、ポリアミド、ポリ
エステルが挙げられる。ポリアミドとしては、ナイロン
66,ナイロン46のホモポリマー及びこれらのコポリマー
やブレンド物である。ポリエステルとしては、ポリエチ
レンテレフタレート，ポリブチレンテレフタレート等が
挙げられる。Examples of the thermoplastic resin referred to in the present invention include polyamide and polyester. As a polyamide, nylon
They are homopolymers of 66, nylon 46 and their copolymers and blends. Examples of the polyester include polyethylene terephthalate and polybutylene terephthalate.
炭素繊維としては、特に制限がなく、ポリアクリロニト
リルを原料としたパン系やピッチ系炭素繊維が用いられ
る。The carbon fiber is not particularly limited, and bread-based or pitch-based carbon fiber made of polyacrylonitrile is used.
ポリエチレンは重量平均分子量が10万から50万の範囲の
ものであるが、好ましくは15万から30万である。重量平
均分子量が10万以下であると、摺動特性改良が不満足で
あり、又、50万以上であると摺動特性改良が不満足のう
えに、ポリエチレンの均一分散が困難となる。ポリエチ
レンの形状は特に制限はなく、ペレット状だけではな
く、粉末状でもよい。Polyethylene has a weight average molecular weight in the range of 100,000 to 500,000, preferably 150,000 to 300,000. When the weight average molecular weight is 100,000 or less, the sliding property improvement is unsatisfactory, and when it is 500,000 or more, the sliding property improvement is unsatisfactory and uniform dispersion of polyethylene becomes difficult. The shape of polyethylene is not particularly limited and may be not only pellets but also powders.
ナイロン66、ナイロン46から選ばれた少なくとも１つの
ポリアミドまたはポリエステルである熱可塑性樹脂100
重量部に対して、炭素繊維が５〜130重量部，ポリエチ
レン３〜60重量部からなる組成物であるが、好ましく
は、ナイロン66、ナイロン46から選ばれた少なくとも１
つのポリアミドまたはポリエステルである熱可塑性樹脂
100重量部に対して炭素繊維９〜100重量部，ポリエチレ
ン５〜35重量部からなる組成物である。Thermoplastic resin 100 which is at least one polyamide or polyester selected from nylon 66 and nylon 46
The composition is composed of 5 to 130 parts by weight of carbon fibers and 3 to 60 parts by weight of polyethylene, preferably at least 1 selected from nylon 66 and nylon 46.
Thermoplastic that is one polyamide or polyester
It is a composition comprising 9 to 100 parts by weight of carbon fiber and 5 to 35 parts by weight of polyethylene with respect to 100 parts by weight.
炭素繊維が５重量部より少ないと充分な機械的強度が得
られず、130重量部より多いと、溶融時の流動性が低下
し、加工性が劣るようになる。If the amount of carbon fibers is less than 5 parts by weight, sufficient mechanical strength cannot be obtained, and if the amount of carbon fibers is more than 130 parts by weight, the fluidity at the time of melting is lowered and the workability becomes poor.
ポリエチレンの量が３重量部より少ないと満足した摺動
特性が得られず、60重量部より多いと、機械的強度の低
下を来たす恐れがある。If the amount of polyethylene is less than 3 parts by weight, satisfactory sliding characteristics cannot be obtained, and if it is more than 60 parts by weight, mechanical strength may be reduced.
又、当然のことながら、一般に知られた添加剤、耐候
剤、固体潤滑剤を本発明の目的を損わない範囲で少量添
加してもさしつかえない。Further, as a matter of course, generally known additives, weathering agents, and solid lubricants may be added in small amounts within a range not impairing the object of the present invention.
［実施例］ 以下実施例により、本発明を詳細に説明する。なお、実
施例及び比較例、参考例中の物性及び評価は、以下の方
法に準じて行った。[Examples] The present invention will be described in detail with reference to Examples. The physical properties and evaluations in Examples, Comparative Examples and Reference Examples were carried out according to the following methods.
曲げ強度 ASTM D−790 曲げ弾性率 ASTM D−790 摺動特性 スラスト法 面圧一定（10kg/cm2） 加工性 混合時 押出材料を混合する時の作業性を評価した。Bending strength ASTM D-790 Bending elastic modulus ASTM D-790 Sliding characteristics Thrust method Surface pressure constant (10 kg / cm 2 ) Workability Mixing Workability when mixing extruded materials was evaluated.
混練時 押出材料を混合後、70mm押出機で混練する時の均一混練
性及び押出性を評価した。At the time of kneading After mixing the extruded materials, uniform kneading property and extrudability at the time of kneading with a 70 mm extruder were evaluated.
成形時 混練押出後ペレタイズしたペレットで成形する時の成形
性と、できた成形品の表面外観を評価した。At the time of molding The moldability at the time of molding with pelletized pellets after kneading and extrusion, and the surface appearance of the resulting molded product were evaluated.
実施例−１ ナイロン66（旭化成工業（株）製レオナ1300）100重量
部に対し、炭素繊維（旭日本カーボンファイバー製Ａ−
6000）20重量部と第１表に示した重量平均分子量をもつ
ポリエチレン（旭化成工業（株）製サンテックJ240,サ
ンテックS360,サンテックＦ−180）13.33重量部を混合
し、一軸の70mmφ押出機にて溶融混練し、押出、ペレタ
イズした。得られたペレットを用いて射出成形機で曲げ
試験片、摺動特性試験片を成形し、曲げ特性、摺動特性
を評価した。Example-1 100 parts by weight of nylon 66 (Leona 1300 manufactured by Asahi Kasei Kogyo Co., Ltd.) was added to carbon fiber (A-made by Asahi Nippon Carbon Fiber A-
6000) 20 parts by weight and 13.33 parts by weight of polyethylene having a weight average molecular weight shown in Table 1 (Suntech J240, Suntech S360, Suntech F-180 manufactured by Asahi Kasei Kogyo Co., Ltd.) were mixed and the mixture was mixed with a uniaxial 70 mmφ extruder. It was melt-kneaded, extruded and pelletized. A bending test piece and a sliding characteristic test piece were molded using an injection molding machine using the obtained pellets, and the bending characteristic and the sliding characteristic were evaluated.
比較例−１ ナイロン66（旭化成工業（株）製レオナ1300）100重量
部に対し、炭素繊維（旭日本カーボンファイバー製Ａ−
6000）20重量部と、第１表に示した重量平均分子量をも
つポリエチレン（旭化成工業（株）サンテックＭ−170
3,サンファインＵ−UH−900）13.33重量部を混合し、実
施例−１と同様にして曲げ特性、摺動特性を評価した。Comparative Example-1 100 parts by weight of nylon 66 (Leona 1300 manufactured by Asahi Kasei Kogyo Co., Ltd.) was added to carbon fiber (A-made by Asahi Nippon Carbon Fiber A-
6000) 20 parts by weight and polyethylene having the weight average molecular weight shown in Table 1 (Suntech M-170, Asahi Kasei Corporation)
13.33 parts by weight of Sunfine U-UH-900) were mixed, and bending properties and sliding properties were evaluated in the same manner as in Example-1.
比較例−２ 重量平均分子量25万のポリエチレン（旭化成工業（株）
製サンテックS360）とパラフィンとを２対１で混合し、
これを140℃に加熱した。冷却後粉砕し、パラフィンを
含浸させたポリエチレンを得た。このポリエチレンを、
ナイロン66（旭化成工業（株）製レオナ1300）100重量
部に対し20重量部（ポリエチレン13.33重量部、パラフ
ィン6.67重量部）と炭素繊維（旭日本カーボンファイバ
ー製Ａ−6000）20重量部を混合し、実施例−１と同様に
して曲げ特性、摺動特性を評価した。Comparative Example-2 Polyethylene with a weight average molecular weight of 250,000 (Asahi Kasei Corporation)
Suntech S360) and paraffin are mixed in a 2: 1 ratio,
It was heated to 140 ° C. After cooling, it was pulverized to obtain paraffin-impregnated polyethylene. This polyethylene
20 parts by weight (13.33 parts by weight of polyethylene, 6.67 parts by weight of paraffin) and 20 parts by weight of carbon fiber (A-6000 made by Asahi Nippon Carbon Fiber) are mixed with 100 parts by weight of nylon 66 (Leona 1300 manufactured by Asahi Kasei Corporation). The bending characteristics and sliding characteristics were evaluated in the same manner as in Example-1.
実施例−1,比較例−1,比較例−２の評価結果を第１表に
示した。Table 1 shows the evaluation results of Example-1, Comparative Example-1, and Comparative Example-2.
実施例−２ ナイロン66（旭化成工業（株）製レオナ1300）100重量
部に対し、炭素繊維（旭日本カーボンファイバー製Ａ−
6000）と重量平均分子量25万のポリエチレン（旭化成工
業（株）製サンテックS360）を第２表に示した組成比で
混合し、実施例−１と同様にして曲げ特性、摺動特性を
評価した。 Example-2 To 100 parts by weight of nylon 66 (Leona 1300 manufactured by Asahi Kasei Co., Ltd.), carbon fiber (A-made by Asahi Nippon Carbon Fiber A-
6000) and polyethylene having a weight average molecular weight of 250,000 (Suntech S360 manufactured by Asahi Kasei Kogyo Co., Ltd.) were mixed in the composition ratios shown in Table 2, and bending properties and sliding properties were evaluated in the same manner as in Example-1. .
比較例−３ ナイロン66（旭化成工業（株）製レオナ1300）100重量
部に対し、炭素繊維（旭日本カーボンファイバー製Ａ−
6000）と重量平均分子量25万のポリエチレン（旭化成工
業（株）製サンテックS360）を第２表に示した組成比で
混合し、実施例−１と同様にして曲げ特性、摺動特性を
評価した。Comparative Example-3 100 parts by weight of nylon 66 (Leona 1300 manufactured by Asahi Kasei Kogyo Co., Ltd.) to 100 parts by weight of carbon fiber (A-made by Asahi Nippon Carbon Fiber A-
6000) and polyethylene having a weight average molecular weight of 250,000 (Suntech S360 manufactured by Asahi Kasei Kogyo Co., Ltd.) were mixed in the composition ratios shown in Table 2, and bending properties and sliding properties were evaluated in the same manner as in Example-1. .
比較例−４ ナイロン66（旭化成工業（株）製レオナ1300）100重量
部に対し、炭素繊維（旭日本カーボンファイバー製Ａ−
6000）17.6重量部を混合し、実施例−１と同様にして曲
げ特性、摺動特性を評価した。Comparative Example-4 To 100 parts by weight of nylon 66 (Leona 1300 manufactured by Asahi Kasei Co., Ltd.), carbon fiber (A-made by Asahi Nippon Carbon Fiber A-
6000) 17.6 parts by weight were mixed, and bending properties and sliding properties were evaluated in the same manner as in Example-1.
実施例−2,比較例−3,比較例−４の評価結果を第２表に
示した。The evaluation results of Example-2, Comparative example-3 and Comparative example-4 are shown in Table 2.
［発明の効果］ 本発明の炭素繊維強化熱可塑性樹脂組成物は摺動特性と
加工性が共に優れ軸受け等の耐摩擦摩耗材料として広範
囲に使用することができ、その工業的価値は大なるもの
がある。 [Effect of the Invention] The carbon fiber reinforced thermoplastic resin composition of the present invention has excellent sliding properties and workability, and can be widely used as a friction and wear resistant material such as a bearing, and its industrial value is great. There is.
フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｃ０８Ｌ 23:06） Continuation of front page (51) Int.Cl. 6 Identification code Office reference number FI technical display area C08L 23:06)
Claims (1)
くとも１つのポリアミドまたはポリエステルである熱可
塑性樹脂100重量部に対して、炭素繊維５〜130重量部と
重量平均分子量が10万〜50万であるポリエチレン３〜60
重量部とからなる炭素繊維強化熱可塑性樹脂組成物。1. Carbon fiber of 5 to 130 parts by weight and weight average molecular weight of 100,000 to 500,000 per 100 parts by weight of a thermoplastic resin which is at least one polyamide or polyester selected from nylon 66 and nylon 46. Some polyethylene 3-60
A carbon fiber reinforced thermoplastic resin composition comprising 1 part by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61059421A JPH0717830B2 (en) | 1986-03-19 | 1986-03-19 | Carbon fiber reinforced thermoplastic resin composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61059421A JPH0717830B2 (en) | 1986-03-19 | 1986-03-19 | Carbon fiber reinforced thermoplastic resin composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62218453A JPS62218453A (en) | 1987-09-25 |
| JPH0717830B2 true JPH0717830B2 (en) | 1995-03-01 |
Family
ID=13112780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61059421A Expired - Fee Related JPH0717830B2 (en) | 1986-03-19 | 1986-03-19 | Carbon fiber reinforced thermoplastic resin composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0717830B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0662831B2 (en) * | 1986-07-28 | 1994-08-17 | 三ツ星ベルト株式会社 | Method for producing polyacetal resin composition |
| JPS63297455A (en) * | 1987-05-29 | 1988-12-05 | Mitsuboshi Belting Ltd | Polyester resin composition |
| JP6491911B2 (en) * | 2015-03-13 | 2019-03-27 | 旭化成株式会社 | Polyacetal resin molding |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55165952A (en) * | 1979-06-14 | 1980-12-24 | Unitika Ltd | Polyamide composition |
| JPS56167740A (en) * | 1980-05-29 | 1981-12-23 | Toyobo Co Ltd | Polyblend composition |
| JPS59113054A (en) * | 1982-12-20 | 1984-06-29 | Unitika Ltd | Resin composition |
| JPS60217256A (en) * | 1984-04-12 | 1985-10-30 | Unitika Ltd | Polyester composition |
-
1986
- 1986-03-19 JP JP61059421A patent/JPH0717830B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62218453A (en) | 1987-09-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |