WO2012034262A1 - 一种改性聚四氟乙烯树脂的耐磨材料 - Google Patents

一种改性聚四氟乙烯树脂的耐磨材料 Download PDF

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WO2012034262A1
WO2012034262A1 PCT/CN2010/002210 CN2010002210W WO2012034262A1 WO 2012034262 A1 WO2012034262 A1 WO 2012034262A1 CN 2010002210 W CN2010002210 W CN 2010002210W WO 2012034262 A1 WO2012034262 A1 WO 2012034262A1
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wear
polytetrafluoroethylene resin
resin
weight percentage
resistant material
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PCT/CN2010/002210
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English (en)
French (fr)
Inventor
肖平
张建新
周云峰
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中昊晨光化工研究院
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Priority to RU2013116636/05A priority Critical patent/RU2550386C2/ru
Priority to US13/823,012 priority patent/US20130172487A1/en
Priority to KR1020137008403A priority patent/KR20130072246A/ko
Priority to JP2013525104A priority patent/JP2013542864A/ja
Priority to EP10857118.3A priority patent/EP2617768A4/en
Publication of WO2012034262A1 publication Critical patent/WO2012034262A1/zh

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
    • C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L27/12—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
    • C08L27/18—Homopolymers or copolymers or tetrafluoroethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F8/00—Chemical modification by after-treatment
    • C08F8/14—Esterification
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones

Definitions

  • the present invention relates to a wear resistant material, and more particularly to a wear resistant material of a modified polytetrafluoroethylene resin. Background technique
  • domestic wear-resistant materials mainly include phenolic resin, glass fiber, molybdenum disulfide, carbon fiber, etc., but the biggest drawback of these materials is the serious wear loss.
  • the conventional method mostly uses an inorganic filler such as glass fiber, graphite or molybdenum disulfide to modify the polytetrafluoroethylene, but the material has a large abrasion rate and a short service life, and is easy to cause wear on the grinding parts.
  • the object of the present invention is to provide a wear-resistant material for a modified polytetrafluoroethylene resin, which is mainly to solve the technical problems that the existing wear-resistant material has a large wear, especially for the wearer.
  • a modified polytetrafluoroethylene resin wear-resistant material of the present invention is obtained by adding a high-polymer polyphenyl ester to a polytetrafluoroethylene resin, and after uniformly mixing, by cold pressing or It is made by hot pressing sintering.
  • the high polymer polyphenyl ester has a weight percentage of 15-50%, and the polytetrafluoroethylene resin has a weight percentage of 50-85%.
  • the polyphenyl ester has a weight percentage of 20-45% and the polytetrafluoroethylene resin has a weight percentage of 55-80%. More preferably, the polyphenyl ester has a weight percentage of 25% and the polytetrafluoroethylene resin has a weight percentage of 75%.
  • Cold-pressed sintering is to uniformly add a mixture of high-polymer polyphenyl ester and polytetrafluoroethylene resin into a special metal mold, and pressurize 20-100 MPa/cm 2 at room temperature to make it dense and geometrically shaped.
  • the preform is then heated to 360-380 ° C and held at this temperature for a certain period of time, then cooled to obtain the desired size of the article.
  • Hot-pressing sintering is to quickly put the preform being sintered into a mold preheated to 360 ⁇ 380 °C, and then water-cooled or air-cooled while being pressurized; it is also possible to put the preform into the sintering furnace together with the mold.
  • the mixture was heated and sintered, and immediately removed from the furnace and then pressurized and cooled.
  • the invention adopts high polymer polyphenyl ester as a modifier, and since the polyphenyl ester has high self-lubricating property, the abrasion of the ordinary filled tetrafluoroethylene can be solved, especially for the grinding device. Damage and other issues. It can be used as a component in extremely harsh conditions (such as high temperature, high pressure, oil-free lubrication, corrosion, etc.).
  • the wear-resistant material of the modified polytetrafluoroethylene resin of the invention has a very small average wear coefficient, and the biggest characteristic of the material is wear resistance, does not damage the grinding parts, and can be widely used for mechanical, aerospace, aerospace, electronics, In the industrial fields such as electrical, the application prospects are very broad. detailed description
  • Polyphenyl esters were purchased from Zhonghao Chenguang Chemical Research Institute in the following examples.
  • CGZ351 PTFE resin purchased from Zhonghao Chenguang Chemical Research Institute, product grade
  • the polyphenyl ester and the polytetrafluoroethylene resin were sufficiently mixed in a weight ratio of 1:3, and then subjected to cold press sintering to prepare a resin.
  • the resulting resin had an average wear coefficient of 1.6 X l (T 5 g/h.
  • the preform is heated to 370 ° C and held at this temperature for a certain period of time and then cooled to obtain an article of the desired size.
  • the polyphenyl ester and the polytetrafluoroethylene resin were sufficiently mixed in a weight ratio of 11:39, and then subjected to hot press sintering to prepare a resin.
  • the resulting resin had an average wear coefficient of 2.1 X l (T 5 g/h.
  • the preform is placed in a sintering furnace together with a mold and heated to 365 ° C for a certain period of time. After being taken out of the furnace, it is immediately pressurized and cooled to obtain a product of a desired size.
  • Example 3
  • Polyphenyl ester and polytetrafluoroethylene resin are thoroughly mixed in a weight ratio of 3:17.
  • the resin is formed by supercooling and sintering.
  • the resulting resin had an average wear coefficient of 3.0 x 10 - 5 g/h.
  • the preform is heated to 375 ° C and held at this temperature for a certain period of time, and then cooled to obtain an article of the desired size.
  • the polyphenyl ester and the polytetrafluoroethylene resin were sufficiently mixed in a weight ratio of 1:1, and then subjected to hot press sintering to prepare a resin.
  • Average abrasion coefficient of the obtained resin was 1.5 x 10- 5 g / h.
  • the preform is heated to 360 ° C and maintained at this temperature for a certain period of time, and then cooled to obtain an article of the desired size.
  • the wear-resistant material prepared by using the modified polytetrafluoroethylene resin of the invention has an extremely small average wear coefficient, and the biggest characteristic of the material is wear resistance, does not damage the grinding parts, and can be widely used for machinery, In the aviation, aerospace, electronics, electrical and other industrial fields, the application prospects are very broad.

Description

一种改性聚四氟乙烯树脂的耐磨材料 技术领域
本发明涉及一种耐磨材料， 具体地说， 涉及一种改性聚四氟乙烯 树脂的耐磨材料。 背景技术
目前， 国内的耐磨材料主要包括酚醛树脂、玻璃纤维、二硫化钼， 碳纤维等， 但这些材料最大的缺陷是对磨损耗严重。
此外， 传统的方法多采用添加玻璃纤维、 石墨、 二硫化钼等无机 填料对聚四氟乙烯进行改性， 但这种材料的磨耗较大， 使用寿命短， 容易对对磨偶件造成磨损。 发明内容
本发明的目的是提供一种改性聚四氟乙烯树脂的耐磨材料，其主 要是解决现有耐磨材料存在磨耗较大，尤其是对对磨偶件有较大损伤 等技术问题。
为了实现本发明目的，本发明的一种改性聚四氟乙烯树脂的耐磨 材料， 其是将高聚物聚苯酯加入到聚四氟乙烯树脂中， 混合均匀后， 通过冷压烧结或热压烧结而制成。
前述的耐磨材料， 所述高聚物聚苯酯的重量百分比为 15-50%， 聚四氟乙烯树脂的重量百分比为 50-85%。 优选地， 聚苯酯的重量百 分比为 20-45%， 聚四氟乙烯树脂的重量百分比为 55-80%。 更优选地， 聚苯酯的重量百分比为 25%， 聚四氟乙烯树脂的重量百分比为 75%。
冷压烧结是先将高聚物聚苯酯和聚四氟乙烯树脂的混合物均匀 地加入专用的金属模具内， 在常温下加压 20-100Mpa/cm2使之成为密 实的具有一定几何形状的预成型品， 然后将预成型品加热至 360~380 °C , 并在此温度保持一定时间， 然后经过冷却， 得到所需规格尺寸的 制品。 热压烧结是将正在烧结的预成型品迅速放入预热至 360~380°C的 模具中， 然后一边加压一边水冷或空气冷却； 也可以把预成型品连模 具一起放入烧结炉中升温烧结， 从炉中取出后立即加压冷却。
本发明以高聚物聚苯酯为改性剂，由于聚苯酯具有高度的自润滑 性， 可解决普通的填充四氟乙烯所存在的磨耗较大， 尤其是对对磨偶 件有较大损伤等问题。 可作为极其苛刻条件下（如高温、 高压、 无油 润滑、 腐蚀等）使用的零部件。
本发明改性聚四氟乙烯树脂的耐磨材料具有极小的平均磨耗系 数，该材料最大的特点是耐磨耗，不损伤对磨偶件，可广泛用于机械、 航空、 航天、 电子、 电气等工业领域， 应用前景十分广阔。 具体实施方式
以下实施例用于说明本发明， 但不用来限制本发明的范围。
以下各实施例中聚苯酯购自中昊晨光化工研究院， 产品牌号
CGZ351 , 聚四氟乙烯树脂购自中昊晨光化工研究院， 产品牌号
CGM02K 实施例 1
将聚苯酯和聚四氟乙烯树脂按 1 : 3的重量比充分混合均匀后通过 冷压烧结制成树脂。 所得树脂的平均磨耗系数为 1.6 X l(T5g/h。
将预成型品加热至 370'C， 并在此温度保持一定时间， 然后经过 冷却， 得到所需规格尺寸的制品。
实施例 2
将聚苯酯和聚四氟乙烯树脂按 11: 39的重量比充分混合均匀后通 过热压烧结制成树脂。 所得树脂的平均磨耗系数为 2.1 X l(T5g/h。
把预成型品连模具一起放入烧结炉中升温烧结至 365°C， 保温一 定时间， 从炉中取出后立即加压冷却， 得到所需规格尺寸的制品。 实施例 3
将聚苯酯和聚四氟乙烯树脂按 3: 17的重量比充分混合均匀后通 过冷压烧结制成树脂。 所得树脂的平均磨耗系数为 3.0 x 10_5g/h。
将预成型品加热至 375 °C， 并在此温度保持一定时间， 然后经过 冷却， 得到所需规格尺寸的制品。
实施例 4
将聚苯酯和聚四氟乙烯树脂按 1 : 1的重量比充分混合均匀后通过 热压烧结制成树脂。 所得树脂的平均磨耗系数为 1.5 x 10-5g/h。
将预成型品加热至 360°C， 并在此温度保持一定时间， 然后经过 冷却， 得到所需规格尺寸的制品。 工业实用性 利用本发明改性聚四氟乙烯树脂制得的耐磨材料具有极小的平 均磨耗系数， 该材料最大的特点是耐磨耗， 不损伤对磨偶件， 可广泛 用于机械、航空、航天、 电子、 电气等工业领域， 应用前景十分广阔。

Claims

权 利 要 求 书
1. 一种改性聚四氟乙烯树脂的耐磨材料， 其特征在于， 其是将 高聚物聚苯酯加入到聚四氟乙烯树脂中， 混合均匀后， 通过冷压烧结 或热压烧结而制成。
2. 根据权利要求 1或 2所述的耐磨材料， 其特征在于， 所述高聚 物聚苯酯的重量百分比为 15-50%, 聚四氟乙烯树脂的重量百分比为 50-85%。
3. 根据权利要求 2所述的耐磨材料， 其特征在于， 所述高聚物聚 苯酯的重量百分比为 20-45%， 聚四氟乙烯树脂的重量百分比为 55-80%。
4. 根据杈利要求 3所述的耐磨材料， 其特征在于， 所述高聚物 聚苯酯的重量百分比为 25%, 聚四氟乙烯树脂的重量百分比为 75%。
PCT/CN2010/002210 2010-09-17 2010-12-30 一种改性聚四氟乙烯树脂的耐磨材料 WO2012034262A1 (zh)

Priority Applications (5)

Application Number Priority Date Filing Date Title
RU2013116636/05A RU2550386C2 (ru) 2010-09-17 2010-12-30 Износоустойчивый материал из модифицированного политетрафторэтилена
US13/823,012 US20130172487A1 (en) 2010-09-17 2010-12-30 Anti-wear material of modified polytetrafluoroethylene
KR1020137008403A KR20130072246A (ko) 2010-09-17 2010-12-30 개질 폴리테트라 플루오로에틸렌수지의 내마모재료
JP2013525104A JP2013542864A (ja) 2010-09-17 2010-12-30 変性ポリテトラフルオロエチレン樹脂製の耐摩耗材料
EP10857118.3A EP2617768A4 (en) 2010-09-17 2010-12-30 ANTI-WEIGHT MATERIAL CONSISTING OF MODIFIED POLYTETRAFLUOROETHYLENE

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CN2010102869225A CN101921442A (zh) 2010-09-17 2010-09-17 一种改性聚四氟乙烯树脂的耐磨材料
CN201010286922.5 2010-09-17

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CN115609989A (zh) * 2022-12-20 2023-01-17 四川省众望科希盟科技有限公司 一种低摩擦系数低磨损的聚四氟乙烯密封材料
CN115609989B (zh) * 2022-12-20 2023-03-28 四川省众望科希盟科技有限公司 一种低摩擦系数低磨损的聚四氟乙烯密封材料

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