CN105542388A - 钛酸钾晶须增强peek/ptfe复合材料及其制备方法 - Google Patents

钛酸钾晶须增强peek/ptfe复合材料及其制备方法 Download PDF

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CN105542388A
CN105542388A CN201510740730.XA CN201510740730A CN105542388A CN 105542388 A CN105542388 A CN 105542388A CN 201510740730 A CN201510740730 A CN 201510740730A CN 105542388 A CN105542388 A CN 105542388A
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potassium titanate
peek
crystal whisker
titanate crystal
ptfe
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杨文光
陈佩民
靳予
孙克原
杨勇
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Nanjing CompTECH New Material Co., Ltd.
Nanjing Kent composites Limited by Share Ltd
NANJING RUNTE NEW MATERIAL CO., LTD.
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NANJING COMPTECH NEW MATERIAL CO Ltd
NANJING JIAFA MACHINERY Co Ltd
Nanjing Runte New Material Co Ltd
NANJING KENTE COMPOSITE MATERIAL CO Ltd
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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
    • C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
    • C08L61/04—Condensation polymers of aldehydes or ketones with phenols only
    • C08L61/16—Condensation polymers of aldehydes or ketones with phenols only of ketones with phenols
    • 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
    • C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
    • C08J5/06—Reinforcing macromolecular compounds with loose or coherent fibrous material using pretreated fibrous materials
    • 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
    • C08J2361/00—Characterised by the use of condensation polymers of aldehydes or ketones; Derivatives of such polymers
    • C08J2361/04—Condensation polymers of aldehydes or ketones with phenols only
    • C08J2361/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
    • 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
    • C08J2427/00—Characterised by the use 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; Derivatives of such polymers
    • C08J2427/02—Characterised by the use 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; Derivatives of such polymers not modified by chemical after-treatment
    • C08J2427/12—Characterised by the use 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; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
    • C08J2427/18—Homopolymers or copolymers of tetrafluoroethylene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/002—Physical properties
    • C08K2201/004—Additives being defined by their length
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend

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  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
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Abstract

本发明公开了一种钛酸钾晶须增强PEEK/PTFE复合材料，其特征在于：由49-71份PEEK，12-15份钛酸钾晶须，2-6份TLCP，15-30份PTFE组成。还公开了其制备方法。本发明在PEEK中添加钛酸钾晶须来提高复合材料的耐磨性。钛酸钾晶须还能增强PEEK的机械强度。采用硬脂酸改性过的钛酸钾晶须在复合材料中更好的分散，进一步提高复合材料的耐磨性。TLCP和PTFE的加入能改变体系的熔体粘度，提高钛酸钾晶须与PEEK之间的亲和度，使钛酸钾晶须分布更均匀，体系更易于加工，具有良好的自润滑性。

Description

钛酸钾晶须增强PEEK/PTFE复合材料及其制备方法
技术领域
本发明涉及钛酸钾晶须增强PEEK/PTFE复合材料及其制备方法，属于复合材料领域。
背景技术
聚醚醚酮(PEEK)是分子主链中含有链节的线性芳香族高分子化合物，是一种耐高温、高性能的热塑性特种工程塑料。PEEK有着良好的机械性能和耐化学品、耐磨损、耐水解等性能；比重轻，自润滑性能好，具有非常好的加工性能，可以应用到航空、机械、电子、化工、汽车等高科技工业领域，可制造高要求的机械零部件，如齿轮、轴承、活塞环、支撑环、密封环(函)、阀片、耐磨圈等，有代替传统金属材料的趋势。但由于表面结构的问题，纯PEEK的表面摩擦系数偏高，滑动性差，在高速、高载的情况下表面产生大量热能无法扩散，影响其使用。
在高铁的使用过程中，由于动车组的速度高达350KM/h，因此对高铁上使用的导向块要求很高，既要求具有高强度高韧性，而且由于导向块常年和金属表面摩擦，还需要导向块有良好的耐磨性能。
发明内容
本发明的目的是提供一种钛酸钾晶须增强PEEK/PTFE复合材料，具有低的摩擦系数、高耐磨性、高韧性、高强度的特点。
为达到上述目的，本发明采用的技术方案为：一种钛酸钾晶须增强PEEK/PTFE复合材料，由49-71份PEEK，12-15份钛酸钾晶须，2-6份热致性液晶聚合物(TLCP)，15-30份PTFE组成。
进一步的，所述PEEK密度为1.35g/cm3,平均粒径为120μm。
进一步的，所述钛酸钾晶须长度为10-50μm，堆积密度为0.3g/cm3。
进一步的，所述TLCP为Ⅰ型TLCP，热变形温度大于300℃。
本发明还提供了上述的钛酸钾晶须增强PEEK/PTFE复合材料的制备方法，其步骤包括：
A、钛酸钾晶须改性：钛酸钾晶须干燥，将硬脂酸和钛酸钾晶须混合与去离子水中，在100℃下搅拌加热，抽滤，100℃干燥2h，其中硬脂酸加入量为钛酸钾晶须质量的3％；
B、真空干燥：采用真空干燥箱对PEEK、TLCP以及PTFE进行真空干燥；
C、高速混合：采用高速混合机对PEEK、钛酸钾晶须、TLCP粉以及PTFE进行混料，以使所有材料均匀共混；
D、将混合后的材料放入405-410℃的热压模具模腔中，待熔融后，在20Mpa压力下成型，冷却脱模；
E、脱模后的材料在250℃保温2h，整个保温过程压力为4Mpa，得到成品。
本发明在PEEK中添加钛酸钾晶须来提高复合材料的耐磨性。钛酸钾晶须还能增强PEEK的机械强度。采用硬脂酸改性过的钛酸钾晶须在复合材料中更好的分散，进一步提高复合材料的耐磨性。TLCP和PTFE的加入能改变体系的熔体粘度，提高钛酸钾晶须与PEEK之间的亲和度，使钛酸钾晶须分布更均匀，体系更易于加工，具有良好的自润滑性。
具体实施方式
PEEK购自长春吉大特塑工程有限公司；
钛酸钾晶须购自江苏宜兴市复合材料制造厂；
TLCP为住友的SimikaSuper；
PTFE购自济南化工厂，粒度50μm。
实施例1
本钛酸钾晶须增强PEEK/PTFE复合材料的制备方法，其步骤包括：
A、钛酸钾晶须改性：钛酸钾晶须干燥，将硬脂酸和钛酸钾晶须混合与去离子水中，在100℃下搅拌加热，抽滤，100℃干燥2h，其中硬脂酸加入量为钛酸钾晶须质量的3％；
B、真空干燥：采用真空干燥箱对PEEK粉末、TLCP粉末以及PTFE粉末进行真空干燥；
C、高速混合：采用高速混合机对49份PEEK粉末、15份钛酸钾晶须、6份TLCP以及30份PTFE进行混料，以使所有材料均匀共混；
D、将混合后的材料放入405-410℃的热压模具模腔中，待熔融后，在20Mpa压力下成型，冷却脱模；
E、脱模后的材料在250℃保温2h，整个保温过程压力为4Mpa，得到成品。
对制得的钛酸钾晶须增强PEEK/PTFE复合材料进行性能测试，测试结果见表1。
实施例2
本钛酸钾晶须增强PEEK/PTFE复合材料的制备方法与实施例1一致，各组分的加入量为：PEEK59份、钛酸钾晶须14份、TLCP4份、PTFE23份。对制得的钛酸钾晶须增强PEEK/PTFE复合材料进行性能测试，测试结果见表1。
实施例3
本钛酸钾晶须增强PEEK/PTFE复合材料的制备方法与实施例1一致，各组分的加入量为：PEEK71份、钛酸钾晶须12份、TLCP2份、PTFE15份。对制得的钛酸钾晶须增强PEEK/PTFE复合材料进行性能测试，测试结果见表1。
备注：摩擦磨损试验条件：初始负荷196N，转速200r/min,干摩擦2h。对磨轮：45钢，42-45HRC。

Claims (5)

1.一种钛酸钾晶须增强PEEK/PTFE复合材料，其特征在于：由49-71份PEEK，12-15份钛酸钾晶须，2-6份TLCP，15-30份PTFE组成。
2.根据权利要求1所述的钛酸钾晶须增强PEEK/PTFE复合材料，其特征在于：所述PEEK密度为1.35g/cm3,平均粒径为120μm。
3.根据权利要求2所述的钛酸钾晶须增强PEEK/PTFE复合材料，其特征在于：所述钛酸钾晶须长度为10-50μm，堆积密度为0.3g/cm3。
4.根据权利要求3所述的钛酸钾晶须增强PEEK/PTFE复合材料，其特征在于：所述TLCP为Ⅰ型TLCP，热变形温度大于300℃。
5.一个权利要求1-4中任一项所述的钛酸钾晶须增强PEEK/PTFE复合材料的制备方法，其步骤包括：
A、钛酸钾晶须改性：钛酸钾晶须干燥，将硬脂酸和钛酸钾晶须混合与去离子水中，在100℃下搅拌加热，抽滤，100℃干燥2h，其中硬脂酸加入量为钛酸钾晶须质量的3％；
B、真空干燥：采用真空干燥箱对PEEK、TLCP以及PTFE进行真空干燥；
C、高速混合：采用高速混合机对PEEK、钛酸钾晶须、TLCP以及PTFE进行混料，以使所有材料均匀共混；
D、将混合后的材料放入405-410℃的热压模具模腔中，待熔融后，在20Mpa压力下成型，冷却脱模；
E、脱模后的材料在250℃保温2h，整个保温过程压力为4Mpa，得到成品。
CN201510740730.XA 2015-11-03 2015-11-03 钛酸钾晶须增强peek/ptfe复合材料及其制备方法 Pending CN105542388A (zh)

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