JP2003313576A - Diamond composite self-lubrication abrasion material - Google Patents
Diamond composite self-lubrication abrasion materialInfo
- Publication number
- JP2003313576A JP2003313576A JP2002118225A JP2002118225A JP2003313576A JP 2003313576 A JP2003313576 A JP 2003313576A JP 2002118225 A JP2002118225 A JP 2002118225A JP 2002118225 A JP2002118225 A JP 2002118225A JP 2003313576 A JP2003313576 A JP 2003313576A
- Authority
- JP
- Japan
- Prior art keywords
- diamond
- fine powder
- polytetrafluoroethylene
- mixed resin
- friction
- 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.)
- Granted
Links
Landscapes
- Lubricants (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は機械や可動構造物の
摺動部分に適用し、大気中および水中で使用される摩擦
係数が低く、耐摩耗性が高い、ダイヤモンド複合自己潤
滑性摩擦材料（以下、単に材料とも言う）及びの製造方
法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is applied to sliding parts of machines and movable structures, and is used in air and water. The diamond composite self-lubricating friction material has a low friction coefficient and high wear resistance. (Hereinafter, also simply referred to as a material) and the manufacturing method thereof.
【０００２】[0002]
【従来の技術】機械などの動力エネルギーを節減し、摺
動部の寿命を長くするため、低い摩擦係数と高い耐摩耗
性を兼ね備える摩擦材料が望まれる。これまでに金属
系、セラミックス系、黒鉛系、プラスチック系などの各
種の自己潤滑性摩擦材料が開発され、実用化されてい
る。これらの中でプラスチック系は、材料製作のエネル
ギーも他の系より少なくて済むという利点がある。2. Description of the Related Art A friction material having a low coefficient of friction and high wear resistance is desired in order to save power energy of a machine or the like and prolong the life of a sliding portion. So far, various self-lubricating friction materials such as metal-based, ceramic-based, graphite-based, and plastic-based materials have been developed and put into practical use. Among them, the plastic system has an advantage that it requires less energy for material production than other systems.
【０００３】従来、ポリイミド−ＰＴＦＥ（ポリテトラ
フロホロエチレン）との混合樹脂からなるマトリックス
中にクラスターダイヤモンド（ＣＤ）、グラファイトク
ラスターダイヤモンド（ＧＣＤ）を分散させたもの（高
津宗吉、梅田一徳、田中章浩、黛政男：トライボロジー
会議予稿集、２００１年５月、Ｐ１８７−１８８、２０
０１年１１月、Ｐ２３３−２３４）が室温大気中で優れ
た摩擦・摩耗特性を示すことは知られている。しかし、
この材料の場合、使用するＣＤ、ＧＣＤは他のダイヤモ
ンドに比べて極めて高価で、材料コストが高くつくとい
う問題点がある。またそのダイヤモンドの生産はロシア
の１社に限られているため、材料の安定供給にも不安が
ある。従って、より安価で材料供給が安定しているダイ
ヤモンドを用いて、ＣＤ、ＧＣＤと同等以上の特性を持
つ摩擦材料の出現が望まれる。Conventionally, cluster diamond (CD) and graphite cluster diamond (GCD) are dispersed in a matrix made of a mixed resin of polyimide-PTFE (polytetrafluorofluoroethylene) (Muneyoshi Takatsu, Kazunori Umeda, Akihiro Tanaka). , Masao Mayuzumi: Tribology Conference Proceedings, May 2001, P187-188, 20.
(November 2001, P233-234) is known to exhibit excellent friction and wear characteristics in a room temperature atmosphere. But,
In the case of this material, the CD and GCD used are extremely expensive as compared with other diamonds, and there is a problem that the material cost is high. Moreover, since the production of that diamond is limited to one Russian company, there is concern about the stable supply of materials. Therefore, it is desired to develop a friction material having a characteristic equal to or higher than that of CD and GCD by using diamond which is cheaper and whose material supply is stable.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、安価でかつ
すぐれた摩擦・摩耗特性を示す自己潤滑性摩擦材料及び
その製造方法を提供することをその課題とする。SUMMARY OF THE INVENTION An object of the present invention is to provide an inexpensive self-lubricating friction material having excellent friction and wear characteristics and a method for producing the same.
【０００５】[0005]
【課題を解決するための手段】本発明らは、前記課題を
解決すべく鋭意研究を重ねた結果、本発明を完成するに
至った。即ち、本発明によれば、以下に示すダイヤモン
ド複合自己潤滑性摩擦材料及びその製造方法が提供され
る。
（１）ポリテトラフルオロエチレンとポリイミドとの混
合樹脂中に粒径２０μｍ以下の爆発合成ダイヤモンド微
粉末及び／又は超高圧合成ダイヤモンド微粉末を材料全
体に対して１〜３０容量％の割合で分散させた構造を有
することを特徴とするダイヤモンド複合自己潤滑性摩擦
材料。
（２）該ポリテトラフルオロエチレンの割合が該混合樹
脂中５〜３０容量％であり、該ダイヤモンド微粉末の粒
径が８μｍ以下でその割合が３〜１５容量％であること
を特徴とする前記（１）に記載の材料。
（３）前記（１）又は（２）に記載の材料を表面材とし
て基材の片面又は両面に形成したことを特徴とするダイ
ヤモンド複合自己潤滑性摩擦材料。
（４）前記（１）に記載の材料の製造方法であって、ポ
リテトラフルオロエチレンとポリイミドとの混合樹脂微
粉末と爆発合成ダイヤモンド微粉末及び／又は超高圧合
成ダイヤモンド微粉末とを混合する混合工程と、該混合
工程で得られた混合粉を所要形状に成形して放電プラズ
マ焼結する焼結工程からなることを特徴とするダイヤモ
ンド自己潤滑性摩擦材料の製造方法。The present inventors have completed the present invention as a result of intensive studies to solve the above problems. That is, according to the present invention, the following diamond composite self-lubricating friction material and a method for producing the same are provided. (1) Disperse explosive synthetic diamond fine powder and / or ultra high pressure synthetic diamond fine powder having a particle size of 20 μm or less in a mixed resin of polytetrafluoroethylene and polyimide at a ratio of 1 to 30% by volume with respect to the entire material. A diamond composite self-lubricating friction material characterized by having a different structure. (2) The ratio of the polytetrafluoroethylene is 5 to 30% by volume in the mixed resin, the particle size of the diamond fine powder is 8 μm or less, and the ratio is 3 to 15% by volume. The material according to (1). (3) A diamond composite self-lubricating friction material, characterized in that the material according to (1) or (2) is formed as a surface material on one side or both sides of a base material. (4) The method for producing the material according to (1), wherein the mixed resin fine powder of polytetrafluoroethylene and polyimide is mixed with explosive synthetic diamond fine powder and / or ultra-high pressure synthetic diamond fine powder. A process for producing a diamond self-lubricating friction material, which comprises a step and a sintering step of shaping the mixed powder obtained in the mixing step into a desired shape and performing spark plasma sintering.
【０００６】[0006]
【発明の実施の形態】本発明において用いるダイヤモン
ド微粉末は、爆発合成ダイヤモンド（ＳＤ）微粉末又は
超高圧ダイヤモンド（ＨＤ）微粉末あるいは両者の混合
物（以下、これらのダイヤモンド微粉末を単にダイヤモ
ンド微粉末とも言う）である。そのダイヤモンド微粉末
の粒径は２０μｍ以下、好ましくは８μｍ以下である。
その下限値は特に制約されないが、通常０．００１μｍ
程度である。前記ＳＤ微粉末及びＨＤ微粉末としては、
市販のものを用いることができる。これらのダイヤモン
ドは、クラスターダイヤモンド（ＣＤ）やグラファイト
クラスターダイヤモンド（ＧＣＤ）よりも安価であり、
本発明の材料のコストを大幅に低減させる。BEST MODE FOR CARRYING OUT THE INVENTION The diamond fine powder used in the present invention is an explosion-synthesized diamond (SD) fine powder, an ultra-high pressure diamond (HD) fine powder, or a mixture of both (hereinafter, these diamond fine powders are simply referred to as diamond fine powders). It is also called). The particle size of the diamond fine powder is 20 μm or less, preferably 8 μm or less.
The lower limit value is not particularly limited, but usually 0.001 μm
It is a degree. As the SD fine powder and the HD fine powder,
A commercially available product can be used. These diamonds are cheaper than cluster diamond (CD) and graphite cluster diamond (GCD),
Significantly reduces the cost of the material of the present invention.
【０００７】本発明では、前記ダイヤモンド微粉末分散
用マトリックスとして、ポリテトラフルオロエチレンと
ポリイミドとの混合樹脂が用いられる。混合樹脂中のポ
リテトラフルオロエチレンの割合は、５〜３０容量％、
好ましくは１０〜２０容量％である。In the present invention, a mixed resin of polytetrafluoroethylene and polyimide is used as the diamond fine powder dispersion matrix. The proportion of polytetrafluoroethylene in the mixed resin is 5 to 30% by volume,
It is preferably 10 to 20% by volume.
【０００８】本発明のダイヤモンド複合自己潤滑性摩擦
材料は、前記混合樹脂中にダイヤモンド微粉末を分散さ
せた構造を有するが、そのダイヤモンド微粉末の割合は
全材料（混合樹脂にとダイヤモンドとの総量）に対し
て、１〜３０容量％、好ましくは３〜１５容量％であ
る。本発明では、特に、粒径１２μｍ以下、より好まし
くは８μｍ以下のダイヤモンド微粉末を、全材料に対し
て３〜１５容量％の割合で容量％含有させるのがよい。The diamond composite self-lubricating friction material of the present invention has a structure in which diamond fine powder is dispersed in the mixed resin, and the proportion of the diamond fine powder is all materials (total amount of mixed resin and diamond. 1) to 30% by volume, preferably 3 to 15% by volume. In the present invention, it is particularly preferable that the fine diamond powder having a particle diameter of 12 μm or less, more preferably 8 μm or less is contained in a volume ratio of 3 to 15 volume% with respect to all materials.
【０００９】本発明では、ダイヤモンド微粉末の粒径及
びその混合樹脂中へ分散させる割合を、前記のように規
定することにより、従来のＣＤやＧＣＤを用いた材料と
同等ないしそれ以上の摩擦・摩耗特性を有する材料を得
ることができる。また、本発明の材料は、大気中ではも
ちろん、水中でも良好な摩擦・摩耗特性を示す。In the present invention, by defining the particle size of the diamond fine powder and the proportion of the fine diamond powder dispersed in the mixed resin as described above, friction and friction equal to or higher than those of conventional materials using CD or GCD can be obtained. A material having wear properties can be obtained. Further, the material of the present invention exhibits good friction and wear characteristics not only in the air but also in water.
【００１０】本発明の材料と製造するには、ポリテトラ
フルオロエチレン微粉末とポリイミド微粉末との混合微
粉末に対してダイヤモンド微粉末を添加混合して成形用
混合物を作る。次に、この混合物を所要の形状の成形
型、例えば金型や黒鉛型に充填し、放電プラズマ焼結装
置（ＳＰＳ）を用いて、プラズマ焼結処理する。この場
合、その圧力は１０〜１００ＭＰａであり、その温度は
１００〜２５０℃である。In order to produce the material of the present invention, diamond fine powder is added to and mixed with fine mixed powder of polytetrafluoroethylene fine powder and polyimide fine powder to form a molding mixture. Next, this mixture is filled in a mold having a desired shape, for example, a mold or a graphite mold, and plasma-sintered by using a spark plasma sintering apparatus (SPS). In this case, the pressure is 10 to 100 MPa and the temperature is 100 to 250 ° C.
【００１１】このようにして、所要形状を有する混合樹
脂（マトリックス）中にダイヤモンド微粉末が分散した
本発明の材料を得ることができる。その材料の形状は、
シート状、板状、ブロック状等の各種の形状であること
ができる。In this way, the material of the present invention in which fine diamond powder is dispersed in a mixed resin (matrix) having a required shape can be obtained. The shape of the material is
It may have various shapes such as a sheet shape, a plate shape and a block shape.
【００１２】本発明の材料は、、その材料を表面材とし
て基板の片面又は両面に形成した構造のものとすること
ができる。この場合、その表面材は膜状体であることが
できるが、その厚さは使用条件等により任意に決めるこ
とができる。基板材質としては、プラスチックや、セラ
ミック、金属等を用いることができる。前記のような基
板の片面に本発明の材料からなる膜体が形成された材料
を好ましく製造するには、成形型内でプラスチック粉末
層とダイヤモンド微粉末を含有する混合樹脂微粉末層と
を積層し、プラズマ焼結処理すればよい。この場合、基
板を形成するプラスチック微粉末としては混合樹脂微粉
末と同一の条件でプラズマ焼結処理できるものであれば
よく、このようなものとしては、例えば、ポリイミド、
ポリエーテルエーテルケトン（ＰＥＥＫ）等の樹脂の微
粉末を挙げることができる。その平均粒径は、通常市販
されている範囲のものでよく、任意のものを使用するこ
とができる。The material of the present invention may have a structure in which the material is used as a surface material on one side or both sides of a substrate. In this case, the surface material can be a film, but its thickness can be arbitrarily determined according to the conditions of use. As the material of the substrate, plastic, ceramic, metal or the like can be used. In order to preferably produce a material in which a film body made of the material of the present invention is formed on one surface of the substrate as described above, a plastic powder layer and a mixed resin fine powder layer containing diamond fine powder are laminated in a molding die. Then, the plasma sintering process may be performed. In this case, the plastic fine powder forming the substrate may be one that can be plasma-sintered under the same conditions as the mixed resin fine powder, and as such a substance, for example, polyimide,
A fine powder of a resin such as polyether ether ketone (PEEK) may be mentioned. The average particle diameter may be in the range which is usually commercially available, and any one can be used.
【００１３】本発明の材料は、その材料を表面材として
基板の両面に形成した構造（サンドイッチ構造）のもの
とすることができる。この場合、その表面材は膜状体で
あることができるが、その厚さは使用条件等により任意
に決めることができる。基板材質としては、プラスチッ
クや、セラミック、金属等を用いることができる。前記
のような基板の両面に本発明の材料からなる膜体が形成
された材料を好ましく製造するには、成形型内でプラス
チック微粉末層の両面にダイヤモンド微粉末を含有する
混合樹脂微粉末層を積層し、これをプラズマ焼結処理す
ればよい。この場合、基板を形成するプラスチック微粉
末としては、混合樹脂微粉末と同一の条件でプラズマ焼
結処理できるものであればよく、このようなものとして
は、例えば、ポリイミド、ポリエーテルエーテルケトン
（ＰＥＥＫ）等の樹脂の微粉末を挙げることができる。
その平均粒径は、通常市販されている範囲のものでよ
く、任意のものを使用することができる。The material of the present invention may have a structure (sandwich structure) in which the material is used as a surface material on both sides of a substrate. In this case, the surface material can be a film, but its thickness can be arbitrarily determined according to the conditions of use. As the material of the substrate, plastic, ceramic, metal or the like can be used. In order to preferably produce a material in which a film body made of the material of the present invention is formed on both sides of the substrate as described above, a mixed resin fine powder layer containing diamond fine powder on both sides of a plastic fine powder layer in a molding die. Are laminated, and this may be subjected to plasma sintering treatment. In this case, the plastic fine powder forming the substrate may be one that can be plasma-sintered under the same conditions as the mixed resin fine powder, and examples of such fine powder include polyimide and polyetheretherketone (PEEK). ) And other fine powders of resins.
The average particle diameter may be in the range which is usually commercially available, and any one can be used.
【００１４】[0014]
【実施例】次に本発明を実施例によりさらに詳述する。EXAMPLES Next, the present invention will be described in more detail by way of examples.
【００１５】実施例１
ポリテトラフルオロエチレン微粉末（旭硝子社製、「ア
フロンＧ３５０」）とポリイミド（日本ポリイミド社
製、「ケルイミド１０１０」）との混合物中にダイヤモ
ンド微粉末を均一に混合分散させ、この混合物を金型内
に層状に充填し、プラズマ焼結処理を施して、ポリエト
ラフルオロエチレンとポリイミドとの混合樹脂中にダイ
ヤモンド微粉末が分散した構造の円形状板体（直径２０
ｍｍ、厚さ６ｍｍ）を得た。この場合、混合樹脂中のポ
リテトラフルオロエチレンの割合は２０容量％であっ
た。前記プラズマ焼結処理は、その装置として、プラズ
マ焼結装置（住友石炭鉱業（株））を用い、圧力；５０
ＭＰａ、温度：２２０℃の条件で行った。Example 1 Diamond fine powder was uniformly mixed and dispersed in a mixture of polytetrafluoroethylene fine powder (Aflon G350 manufactured by Asahi Glass Co., Ltd.) and polyimide (Kelimide 1010 manufactured by Nippon Polyimide Co.). A circular plate (diameter: 20) having a structure in which diamond fine powder is dispersed in a mixed resin of polyetrafluoroethylene and polyimide is prepared by filling the mixture in a layer form with this mixture and performing a plasma sintering process.
mm, thickness 6 mm) was obtained. In this case, the proportion of polytetrafluoroethylene in the mixed resin was 20% by volume. In the plasma sintering process, a plasma sintering device (Sumitomo Coal Mining Co., Ltd.) was used as the device, and the pressure was 50.
It was performed under the conditions of MPa and temperature: 220 ° C.
【００１６】前記のようにして得られた材料の摩擦・摩
耗試験を、ボールオンブロック式往復摩擦試験械を用い
て行った。この場合の試験は、相手材としてはアルミナ
ボールを用い、試験荷重２５Ｎ、摩擦速度２０ｍ／ｓの
条件下、大気中の往復摩擦により行った。その結果を表
１に示す。The friction / wear test of the material obtained as described above was conducted by using a ball-on-block reciprocating friction test machine. The test in this case was carried out by reciprocating friction in the atmosphere under the conditions of a test load of 25 N and a friction speed of 20 m / s, using an alumina ball as the mating material. The results are shown in Table 1.
【００１７】[0017]
【表１】 [Table 1]
【００１８】実施例２
実施例１と同様にして作成した材料について、実施例１
と同条件下、水中で摩擦試験を行った。その結果を表２
に示す。Example 2 A material prepared in the same manner as in Example 1 was used.
A friction test was performed in water under the same conditions as described above. The results are shown in Table 2.
Shown in.
【００１９】[0019]
【表２】 [Table 2]
【００２０】前記表中に符号で示したダイヤモンドの具
体的内容は以下通りである。
（１）ＳＤ：粒径０．１μｍ以下
（２）ＨＤ（Ｉ）：粒径１μｍ以下
（３）ＨＤ（II）：粒径３〜６μｍ
（４）ＨＤ（III）：粒径６〜１２μｍThe concrete contents of the diamond indicated by the symbols in the above table are as follows. (1) SD: particle size 0.1 μm or less (2) HD (I): particle size 1 μm or less (3) HD (II): particle size 3 to 6 μm (4) HD (III): particle size 6 to 12 μm
【００２１】[0021]
【発明の効果】本発明によるダイヤモンドの複合自己潤
滑性摩擦材料は、安価なダイヤモンド部粉末を用いたに
もかかわらず、従来の高価なダイヤモンドの微粉末を用
いた場合と同等の摩擦・摩耗特性を有するものである。
また、本発明の材料は、水中においてもすぐれた摩擦・
摩耗特性を示す。従って、本発明の材料は、油圧機械か
ら環境汚染がなく、安全性の高い水圧機械への転換にも
寄与するものである。EFFECTS OF THE INVENTION The composite self-lubricating friction material of diamond according to the present invention has the same friction and wear characteristics as the case of using the expensive diamond fine powder of the related art although the inexpensive diamond part powder is used. Is to have.
In addition, the material of the present invention has excellent friction
Shows wear characteristics. Therefore, the material of the present invention also contributes to the conversion from a hydraulic machine to a hydraulic machine having high environmental safety and high safety.
───────────────────────────────────────────────────── 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） // Ｃ１０Ｎ 20:06 Ｃ１０Ｎ 20:06 Ｚ 30:06 30:06 50:08 50:08 (72)発明者 高津 宗吉 茨城県つくば市東１−１−１ 独立行政法 人 産業技術総合研究所 つくばセンター 内 Ｆターム(参考） 4H104 AA04C CD02A CE13A EA08C JA01 LA03 PA01 QA21 ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 7 Identification code FI theme code (reference) // C10N 20:06 C10N 20:06 Z 30:06 30:06 50:08 50:08 (72) Invention Person Takatsu Sokichi 1-1-1 East, Tsukuba-shi, Ibaraki Independent administrative law F-term (reference) in Tsukuba Center, National Institute of Advanced Industrial Science and Technology (reference) 4H104 AA04C CD02A CE13A EA08C JA01 LA03 PA01 QA21
Claims (4)
ドとの混合樹脂中に粒径２０μｍ以下の爆発合成ダイヤ
モンド微粉末及び／又は超高圧合成ダイヤモンド微粉末
を材料全体に対して１〜３０容量％の割合で分散させた
構造を有することを特徴とするダイヤモンド複合自己潤
滑性摩擦材料。1. An explosive synthetic diamond fine powder having a particle size of 20 μm or less and / or an ultra-high pressure synthetic diamond fine powder in a mixed resin of polytetrafluoroethylene and polyimide at a ratio of 1 to 30% by volume with respect to the entire material. A diamond composite self-lubricating friction material characterized by having a dispersed structure.
該混合樹脂中５〜３０容量％であり、該ダイヤモンド微
粉末の粒径が８μｍ以下でその割合が３〜１５容量％で
あることを特徴とする請求項１に記載の材料。2. The ratio of the polytetrafluoroethylene in the mixed resin is 5 to 30% by volume, the particle size of the diamond fine powder is 8 μm or less, and the ratio is 3 to 15% by volume. The material according to claim 1.
して基材の片面又は両面上に形成したことを特徴とする
ダイヤモンド複合自己潤滑性摩擦材料。3. A diamond composite self-lubricating friction material, characterized in that the material according to claim 1 or 2 is formed as a surface material on one surface or both surfaces of a base material.
て、ポリテトラフルオロエチレンとポリイミドとの混合
樹脂微粉末と爆発ダイヤモンド微粉末及び／又は超高圧
合成ダイヤモンド微粉末とを混合する混合工程と、該混
合工程で得られた混合粉を所要形状に成形して放電プラ
ズマ焼結する焼結工程からなることを特徴とするダイヤ
モンド自己潤滑性摩擦材料の製造方法。4. The method for producing a material according to claim 1, wherein the mixed resin fine powder of polytetrafluoroethylene and polyimide is mixed with explosive diamond fine powder and / or ultra-high pressure synthetic diamond fine powder. A process for producing a diamond self-lubricating friction material, which comprises a step and a sintering step of shaping the mixed powder obtained in the mixing step into a desired shape and performing spark plasma sintering.
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| JP2002118225A JP4002966B2 (en) | 2002-04-19 | 2002-04-19 | Diamond composite self-lubricating friction material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002118225A JP4002966B2 (en) | 2002-04-19 | 2002-04-19 | Diamond composite self-lubricating friction material |
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| Publication Number | Publication Date |
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| JP2003313576A true JP2003313576A (en) | 2003-11-06 |
| JP4002966B2 JP4002966B2 (en) | 2007-11-07 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106830939A (en) * | 2017-02-27 | 2017-06-13 | 武汉碳十二科技有限公司 | A kind of diamond substrate and preparation method thereof |
| CN108359516A (en) * | 2018-04-04 | 2018-08-03 | 广州顺润新材料科技有限公司 | A kind of engine lubricating oil antiwear additive and its preparation method and application |
| JP2019172887A (en) * | 2018-03-29 | 2019-10-10 | 豊田合成株式会社 | Thermoplastic elastomer composition, and weather strip and method for producing same |
-
2002
- 2002-04-19 JP JP2002118225A patent/JP4002966B2/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106830939A (en) * | 2017-02-27 | 2017-06-13 | 武汉碳十二科技有限公司 | A kind of diamond substrate and preparation method thereof |
| CN106830939B (en) * | 2017-02-27 | 2020-08-21 | 宜昌超光半导体有限公司 | Diamond substrate and preparation method thereof |
| JP2019172887A (en) * | 2018-03-29 | 2019-10-10 | 豊田合成株式会社 | Thermoplastic elastomer composition, and weather strip and method for producing same |
| JP7068002B2 (en) | 2018-03-29 | 2022-05-16 | 豊田合成株式会社 | Thermoplastic elastomer composition and weather strip and its manufacturing method |
| CN108359516A (en) * | 2018-04-04 | 2018-08-03 | 广州顺润新材料科技有限公司 | A kind of engine lubricating oil antiwear additive and its preparation method and application |
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| JP4002966B2 (en) | 2007-11-07 |
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