JP2002105314A - Lubricating composition - Google Patents
Lubricating compositionInfo
- Publication number
- JP2002105314A JP2002105314A JP2000298726A JP2000298726A JP2002105314A JP 2002105314 A JP2002105314 A JP 2002105314A JP 2000298726 A JP2000298726 A JP 2000298726A JP 2000298726 A JP2000298726 A JP 2000298726A JP 2002105314 A JP2002105314 A JP 2002105314A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- lubricating composition
- carbon nanotubes
- lubricating
- weight
- 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
- 230000001050 lubricating effect Effects 0.000 title claims abstract description 22
- 239000000203 mixture Substances 0.000 title claims abstract description 14
- 239000011347 resin Substances 0.000 claims abstract description 27
- 229920005989 resin Polymers 0.000 claims abstract description 27
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000002041 carbon nanotube Substances 0.000 claims abstract description 15
- 229910021393 carbon nanotube Inorganic materials 0.000 claims abstract description 15
- 239000004734 Polyphenylene sulfide Substances 0.000 claims abstract description 13
- 229920000069 polyphenylene sulfide Polymers 0.000 claims abstract description 13
- PYVHTIWHNXTVPF-UHFFFAOYSA-N F.F.F.F.C=C Chemical compound F.F.F.F.C=C PYVHTIWHNXTVPF-UHFFFAOYSA-N 0.000 claims description 5
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 abstract description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 13
- 238000000034 method Methods 0.000 description 10
- 239000000463 material Substances 0.000 description 9
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 7
- 229910002092 carbon dioxide Inorganic materials 0.000 description 7
- 229910052739 hydrogen Inorganic materials 0.000 description 7
- 239000001257 hydrogen Substances 0.000 description 7
- 239000001569 carbon dioxide Substances 0.000 description 6
- 239000003054 catalyst Substances 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 4
- 229920006351 engineering plastic Polymers 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 239000004809 Teflon Substances 0.000 description 2
- 229920006362 Teflon® Polymers 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229920006358 Fluon Polymers 0.000 description 1
- 229920006361 Polyflon Polymers 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、各種の摺動部材料
として利用されるポリフェニレンサルファイド樹脂を主
成分とする潤滑性組成物に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lubricating composition containing polyphenylene sulfide resin as a main component, which is used as various sliding portion materials.
【０００２】[0002]
【従来の技術】近年、エンジニアリングプラスチツク
（以下、エンプラという）製滑り軸受の用途の拡大に伴
い、軸受の使用条件、特に高温雰囲気下において、良好
な摩擦摩耗特性の優れた耐熱性のあるエンプラ製軸受が
要求されるようになってきた。2. Description of the Related Art In recent years, as the use of engineering plastic (hereinafter referred to as engineering plastic) sliding bearings has expanded, under the operating conditions of bearings, especially in high-temperature atmospheres, it has been found that engineering plastics have excellent friction and wear characteristics and are excellent in heat resistance. Bearings have come to be required.
【０００３】従来、耐熱性が良好で機械的強度の優れた
エンプラとしてポリフェニレンサルファイド（以下、Ｐ
ＰＳという）樹脂が使用されている。しかしながら、Ｐ
ＰＳ樹脂は自己潤滑性が低いため、潤滑性が要求される
部分の材料として使用するには、潤滑剤等を添加して潤
滑性を付与する必要があり、例えば、黒鉛、四フツ化エ
チレン樹脂、潤滑油等が潤滑性付与物質として用いられ
ている。しかし、このようなものは、高温、高負荷条件
のもとで、良好な摩耗摩擦特性を発揮させるという点に
おいて満足のいくものではなかった。一方、炭素繊維を
配合した複合材料を用いることも試みられているが、こ
の材料は初期においては良好な摩擦摩耗特性を示すが、
相手材を損傷させ、その損傷にともない摩擦摩耗特性は
急激に悪化する。[0003] Conventionally, polyphenylene sulfide (hereinafter, referred to as P) has been used as engineering plastic having good heat resistance and excellent mechanical strength.
Resin (PS). However, P
Since PS resin has low self-lubricating properties, it must be added with a lubricant or the like to provide lubricating properties when used as a material for parts requiring lubricating properties. For example, graphite, tetrafluoroethylene resin , Lubricating oils and the like are used as lubricity-imparting substances. However, such a material is not satisfactory in that it exhibits good wear friction characteristics under high temperature and high load conditions. On the other hand, attempts have been made to use a composite material containing carbon fibers, but this material initially shows good friction and wear properties,
The mating material is damaged, and the friction and wear characteristics rapidly deteriorate with the damage.
【０００４】[0004]
【発明が解決しようとする課題】上記のように、従来の
技術において良好な潤滑特性を有する耐熱性材料がなく
産業界の要望に応えられないという問題点があり、これ
を解決することが課題になっていた。As described above, there is a problem that the prior art does not have a heat-resistant material having good lubricating properties and cannot meet the demands of the industry. Had become.
【０００５】[0005]
【課題を解決するための手段】上記の課題を解決するた
めに、本発明の潤滑性組成物は、ＰＰＳ樹脂にカーボン
ナノチューブを添加したことを特徴とする。さらに、好
ましくは、ＰＰＳ樹脂に四フツ化エチレン樹脂１５〜３
５重量％とカーボンナノチューブ１０〜４０重量％を添
加した潤滑性組成物である。Means for Solving the Problems To solve the above problems, the lubricating composition of the present invention is characterized in that carbon nanotubes are added to a PPS resin. Further, preferably, the PPS resin is an ethylene tetrafluoride resin 15 to 3
This is a lubricating composition to which 5% by weight and 10 to 40% by weight of carbon nanotubes are added.
【０００６】[0006]
【発明の実施の形態】本発明に使用するＰＰＳ樹脂は、
一般式；−［Ｐｈ−Ｓ］−で示される樹脂である（ただ
し、Ｐｈはフェニル基）。この樹脂は、直鎮型、架橋型
もしくは半架橋型のいずれでもよく、好ましくは直鎖型
が良い。ＰＰＳ樹脂としては、例えばクレハ化学社製Ｋ
ＰＳ−Ｗ２０５、東ソーサティール社製ＰＰＳ＃１６０
などを使用することができる。BEST MODE FOR CARRYING OUT THE INVENTION The PPS resin used in the present invention is:
It is a resin represented by the general formula:-[Ph-S]-(where Ph is a phenyl group). This resin may be any of a direct resin type, a cross-linked type or a semi-cross-linked type, and preferably a linear type. As the PPS resin, for example, Kleha Chemical K
PS-W205, PPS # 160 manufactured by Tosoh Sastille
Etc. can be used.
【０００７】また、本発明に使用するカーボンナノチュ
ーブは二酸化炭素の接触水素還元により製造したものが
好ましいが、アーク放電法、レーザー蒸発法、ＣＶＤ
法、熱分解法等で製造してもよい。二酸化炭素の接触水
素還元による製造は、少なくとも二酸化炭素及び水素を
含む混合ガスを４００〜９００℃の反応温度にて遷移金
属触媒に接触させ、混合ガス中の二酸化炭素を接触水素
還元することにより、触媒表面にカーボンナノチューブ
を析出させる。カーボンナノチューブの量は、好ましく
は１０〜４０重量％、さらに好ましくは１５〜３０重量
％である。これら範囲外では潤滑特性が悪化するからで
ある。The carbon nanotubes used in the present invention are preferably those produced by catalytic hydrogen reduction of carbon dioxide.
It may be manufactured by a method, a thermal decomposition method or the like. The production of carbon dioxide by catalytic hydrogen reduction is performed by contacting a mixed gas containing at least carbon dioxide and hydrogen with a transition metal catalyst at a reaction temperature of 400 to 900 ° C, and catalytically reducing carbon dioxide in the mixed gas by hydrogen. Deposit carbon nanotubes on the catalyst surface. The amount of carbon nanotubes is preferably 10 to 40% by weight, more preferably 15 to 30% by weight. If the content is outside these ranges, the lubricating properties deteriorate.
【０００８】また、本発明では、潤滑性を上げるために
四フツ化エチレン樹脂を使用してもよい。本発明に使用
する四フツ化エチレン樹脂は、四フツ化エチレンの重合
体であり、成形用の粉末であっても、固体潤滑剤の粉末
であっても良い。例えば、三井・デュポンフロロケミカ
ル社製：テフロン７Ｊ、旭硝子社製：フルオンＧ１６
３、ダイキン工業社製：ポリフロンＭ１５、ルブロンＬ
５などを例示することができる。四フツ化エチレン樹脂
の量は、１０〜３５重量％がこのましい。１０重量％よ
り少ないと潤滑特性が悪く、３５重量％を超えると成形
性が損なわれるからである。Further, in the present invention, a tetrafluoroethylene resin may be used in order to improve lubricity. The ethylene tetrafluoride resin used in the present invention is a polymer of ethylene tetrafluoride, and may be a molding powder or a solid lubricant powder. For example, Mitsui-Dupont Fluorochemicals: Teflon 7J, Asahi Glass: Fluon G16
3. Daikin Industries: Polyflon M15, Lubron L
5 and the like. The amount of the tetrafluoroethylene resin is preferably from 10 to 35% by weight. If it is less than 10% by weight, the lubricating properties are poor, and if it exceeds 35% by weight, the moldability is impaired.
【０００９】ここで、配合割合の決定した各添加物を混
合する方法は、一般的に用いられる方法、例えば主成分
となる樹脂、それ以外の諸原料をそれぞれ個別に、もし
くはヘンシェルミキサー、タンブラーミキサボールミル
等の混合機に供給するか、もしくは、予め熱ロール、ニ
ーダ、溶融押出機等で溶融混合する等の方法を用いれば
よい。また、本発明の潤滑性組成物の成形法は特に限定
するものではなく、圧縮成形、押出成形、射出成形等の
方法等を用いることができる。なお、本発明の潤滑組成
物に対して、潤滑特性を悪化させない範囲内で各種添加
剤を配合することができる。Here, the method of mixing the additives whose mixing ratios are determined is a commonly used method, for example, a resin as a main component and other raw materials are individually used, or a Henschel mixer or a tumbler mixer. A method of supplying the mixture to a mixer such as a ball mill or a method of previously melt-mixing with a hot roll, a kneader, a melt extruder, or the like may be used. The method for molding the lubricating composition of the present invention is not particularly limited, and methods such as compression molding, extrusion molding, and injection molding can be used. Various additives can be added to the lubricating composition of the present invention as long as the lubricating properties are not deteriorated.
【００１０】本発明の潤滑性組成物は、ＰＰＳ樹脂に四
フツ化エチレン樹脂、カーボンナノチューブを添加する
ことにより良好な潤滑特性を示すと同時に、相手材を摩
耗させることもない。さらに、カーボンナノチューブの
量を調整することにより導電性も付与することができ
る。The lubricating composition of the present invention shows good lubricating properties by adding ethylene tetrafluoride resin and carbon nanotubes to the PPS resin, and does not wear the mating material. Furthermore, by adjusting the amount of carbon nanotubes, conductivity can also be imparted.
【００１１】[0011]
【実施例】（材料）実施例、比較例に使用した材料を表
１に示す。各成分の配合割合は、すべて重量％である。EXAMPLES (Materials) The materials used in the examples and comparative examples are shown in Table 1. The mixing ratio of each component is all% by weight.
【表１】 なお、上記表中、ＰＰＳ樹脂は、クレハ化学社製、ＫＰ
Ｓ−Ｗ２０５、四フツ化エチレン樹脂は三井デュポン・
フロロケミカル社製、テフロン７Ｊを使用した。また、
カーボンナノチューブは、以下の方法で製造した。 （カーボンナノチューブの製造方法）二酸化炭素の接触
水素還元法一流通式固定床反応器（８０ｍｍφ×６００
ｍｍＬ）に触媒２００ｇ（５０ｗｔ％Ｎｉ／Ｓｉｏ２）
を充填し、水素２Ｌ／ｍｉｎ，４００℃，２ｈｒ還元
後、水素と二酸化炭素の混合ガス７．５Ｌ／ｍｉｎ（Ｈ
２：ＣＯ２＝５：２．５ｖ／ｖ）を反応器に導入し、５
３０℃，４ｈｒ反応させた。反応終了後、反応器内を窒
素で置換し、室温まで冷却した。触媒を反応器から取り
出し、触媒を走査電子顕微鏡で観察したところ、触媒表
面にカーボンナノチューブが生成していた。[Table 1]In the above table, PPS resin is KP manufactured by Kureha Chemical Co., Ltd.
S-W205, tetrafluoroethylene resin is Mitsui DuPont
Teflon 7J manufactured by Fluorochemicals Co., Ltd. was used. Also,
Carbon nanotubes were produced by the following method. (Method for producing carbon nanotubes) Contact with carbon dioxide
Hydrogen reduction method, one-flow fixed bed reactor (80 mmφ × 600
mmL) and 200g of catalyst (50wt% Ni / Sio)2)
, Hydrogen 2L / min, 400 ℃, 2hr reduction
Then, a mixed gas of hydrogen and carbon dioxide 7.5 L / min (H
2: CO2= 5: 2.5 v / v) was introduced into the reactor, and 5
The reaction was performed at 30 ° C. for 4 hours. After the reaction is completed,
And cooled to room temperature. Remove the catalyst from the reactor
And the catalyst was observed with a scanning electron microscope.
Carbon nanotubes were formed on the surface.
【００１２】（成形）潤滑性組成物の成形は、まず各種
材料をヘンシェルミキサーで混合し、ニ軸溶融押出機に
供給し、シリンダー温度３１０℃、１００回転／分の回
転数の条件で押出して造粒し、得られたペレツトを樹脂
温度３１０℃、射出圧力８００ｋｇ／ｃｍ２、金型温度
１３０℃の射出成形条件下で外径２３ｍｍ、内径１４ｍ
ｍ、長さ１３ｍｍリング状試験片を成形し、この試験片
を用いて体積抵抗率の測定、摩擦摩耗試験を行った。ま
た、摩擦係数は滑り速度を１００ｍ／ｍｉｎ、荷重１ｋ
ｇ／ｃｍ２の条件でスラスト型摩耗試験機を用いて測定
し、摩耗係数は滑り速度１２８ｍ／ｍｉｎ、荷重３．９
ｋｇ／ｃｍ２の条件でスラスト型摩耗試験機を用いて測
定した。(Molding) To form a lubricating composition, first, various materials are mixed with a Henschel mixer, supplied to a twin-screw extruder, and extruded at a cylinder temperature of 310 ° C. and a rotation speed of 100 revolutions / minute. The pellet was granulated, and the obtained pellet was subjected to injection molding conditions at a resin temperature of 310 ° C., an injection pressure of 800 kg / cm 2 , and a mold temperature of 130 ° C., with an outer diameter of 23 mm and an inner diameter of 14 m.
A ring-shaped test piece having a length of 13 mm and a length of 13 mm was molded, and a volume resistivity was measured and a friction and wear test was performed using the test piece. In addition, the coefficient of friction is such that the slip speed is 100 m / min and the load is 1 k.
g / cm 2 , measured using a thrust-type abrasion tester. The abrasion coefficient was 128 m / min for the sliding speed and 3.9 for the load.
It was measured using a thrust-type abrasion tester under the condition of kg / cm 2 .
【００１３】（比較例）表１に示した割合で原材料を配
合したこと以外は実施例と同一にして試験片を作成し、
諸特性を求め、得られた結果を表２に示した。(Comparative Example) A test piece was prepared in the same manner as in the example except that the raw materials were blended at the ratios shown in Table 1.
Various characteristics were determined, and the obtained results are shown in Table 2.
【００１４】[0014]
【表２】 [Table 2]
【００１５】表２の結果から、カーボンナノチューブを
添加すると黒鉛を添加した場合に比較して摩耗係数が１
／４程度小さくなっており、潤滑特性が黒鉛よりも優れ
ていることが判明した。[0015] From the results in Table 2, it can be seen that the addition of carbon nanotubes has a wear coefficient of 1 compared to the case of adding graphite.
It was found that the lubricating property was superior to that of graphite.
【００１６】[0016]
【発明の効果】本発明の潤滑組成物から得られる成形体
は良好な耐摩耗性を有しており、それに加えて導電性が
付与されるので、ＰＰＳ樹脂の耐熱性を利用して、高温
で耐摩耗性と導電性の両者の機能が同時に要求される用
途には最適である。しかも、成形も容易に行えるという
格別の効果を有する。The molded article obtained from the lubricating composition of the present invention has good abrasion resistance and, in addition, has electrical conductivity. It is most suitable for applications that require both wear resistance and conductivity. Moreover, there is a special effect that molding can be easily performed.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） //(Ｃ０８Ｌ 81/02 (Ｃ０８Ｌ 81/02 27:18） 27:18） Ｃ１０Ｎ 20:06 Ｃ１０Ｎ 20:06 Ｚ 30:00 30:00 Ｚ 30:06 30:06 30:08 30:08 40:02 40:02 Ｆターム(参考） 4H104 AA04C CG03A EA07C EA14C LA03 LA04 LA20 PA01 QA21 4J002 BD152 CN011 DA016 FD172 FD176 GM00 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) // (C08L 81/02 (C08L 81/02 27:18) 27:18) C10N 20:06 C10N 20: 06 Z 30:00 30:00 Z 30:06 30:06 30:08 30:08 40:02 40:02 F term (reference) 4H104 AA04C CG03A EA07C EA14C LA03 LA04 LA20 PA01 QA21 4J002 BD152 CN011 DA016 FD172 FD176 GM00
Claims (2)
ボンナノチューブを添加したことを特徴とする潤滑性組
成物。1. A lubricating composition comprising a carbon nanotube added to a polyphenylene sulfide resin.
化エチレン樹脂１５〜３５重量％とカーボンナノチュー
ブ１０〜４０重量％を添加したことを特徴とする潤滑性
組成物。2. A lubricating composition comprising a polyphenylene sulfide resin and 15 to 35% by weight of ethylene tetrafluoride resin and 10 to 40% by weight of carbon nanotubes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000298726A JP2002105314A (en) | 2000-09-29 | 2000-09-29 | Lubricating composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000298726A JP2002105314A (en) | 2000-09-29 | 2000-09-29 | Lubricating composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002105314A true JP2002105314A (en) | 2002-04-10 |
Family
ID=18780651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000298726A Pending JP2002105314A (en) | 2000-09-29 | 2000-09-29 | Lubricating composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002105314A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004113435A (en) * | 2002-09-26 | 2004-04-15 | Brother Ind Ltd | Sewing machine |
| US7449432B2 (en) | 2006-03-07 | 2008-11-11 | Ashland Licensing And Intellectual Property, Llc (Alip) | Gear oil composition containing nanomaterial |
| CN102382468A (en) * | 2011-09-28 | 2012-03-21 | 深圳市科聚新材料有限公司 | Carbon nano tube reinforced polyphenylene sulfide material and preparation method thereof |
| JP2013023608A (en) * | 2011-07-22 | 2013-02-04 | Tosoh Corp | Polyarylene sulfide-based composition |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2002105329A (en) * | 2000-09-29 | 2002-04-10 | Toray Ind Inc | Thermoplastic resin composition and molded article |
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| JPH0741780A (en) * | 1993-07-30 | 1995-02-10 | Ntn Corp | Heat-resistant conductive sliding bearing |
| JPH11279405A (en) * | 1998-03-26 | 1999-10-12 | Kureha Chem Ind Co Ltd | Polyarylene sulfide resin composition |
| JP2000044216A (en) * | 1998-04-09 | 2000-02-15 | Horcom Ltd | Purifying method of nanotube soot, nanotube composite material suspension and composition |
| JP2000086891A (en) * | 1998-09-17 | 2000-03-28 | Kureha Chem Ind Co Ltd | Sliding member for conveying apparatus |
| JP2003524516A (en) * | 1999-03-31 | 2003-08-19 | ゼネラル・エレクトリック・カンパニイ | Catalyst system for carbon fibril production |
| JP2002097375A (en) * | 2000-09-22 | 2002-04-02 | Toray Ind Inc | Thermoplastic resin composition and molding |
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| JP2004113435A (en) * | 2002-09-26 | 2004-04-15 | Brother Ind Ltd | Sewing machine |
| US7449432B2 (en) | 2006-03-07 | 2008-11-11 | Ashland Licensing And Intellectual Property, Llc (Alip) | Gear oil composition containing nanomaterial |
| JP2013023608A (en) * | 2011-07-22 | 2013-02-04 | Tosoh Corp | Polyarylene sulfide-based composition |
| CN102382468A (en) * | 2011-09-28 | 2012-03-21 | 深圳市科聚新材料有限公司 | Carbon nano tube reinforced polyphenylene sulfide material and preparation method thereof |
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