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Polyether-ether-ketone based wear-resistant composite material and preparation method thereof

A composite material, polyether ether ketone technology, applied in the field of functional composite material production, to achieve excellent low wear, excellent low friction coefficient, improve the effect of boundary lubrication performance

Active Publication Date: 2019-05-21
扬州市维纳复合材料科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, few people have studied the compatibility of PTFE wear-resistant modified materials with PEEK matrix, and the synergistic effect with nano-two-dimensional materials on the friction and mechanical properties of PEEK composites.

Method used

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  • Polyether-ether-ketone based wear-resistant composite material and preparation method thereof
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  • Polyether-ether-ketone based wear-resistant composite material and preparation method thereof

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Embodiment Construction

[0021] 1. The preparation process of modified graphene nano-chips:

[0022] Add 100 g of graphene microflakes and 14.8 g of calcium hydroxide into 1000.0 g of water, stir to form a uniform suspension, and then pass in carbon dioxide to carry out gas-solid reaction under the reaction condition of 60°C.

[0023] When the pH value of the suspension drops to 7, the aeration is stopped, and 120 g of calcium carbonate-loaded graphene filter cake is obtained by suction filtration and washing, and dried in a vacuum oven at 80°C for 12 hours to obtain the modified graphene nanometer cake. Microchips, spare.

[0024] Second, the preparation process of composite materials:

[0025] 1. Embodiment:

[0026] The following parts by weight were weighed: 90 parts of polyether ether ketone, 9.9 parts of extrusion grade polytetrafluoroethylene, and 0.5 parts of modified graphene nanosheets.

[0027] All the above raw materials are added to a high-speed mixer for mechanical mixing, and then th...

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Abstract

The invention provides a polyether-ether-ketone based wear-resistant composite material and a preparation method thereof, and relates to the technical field of production of a functional composite material. Polyether-ether-ketone based wear-resistant composite granules are prepared by mixing modified graphene nanometer microsheets, polyether-ether-ketone and polytetrafluoroethylene (PTFE), puttingthe mixture into a double-screw extruding machine, performing melt mixing and performing extrusion granulation. According to the polyether-ether-ketone (PEEK) based wear-resistant composite material,a PTFE phase which takes on an 'island' structure in a PEEK matrix as well as nanosheet-shaped graphene microsheets which are dispersed in the matrix uniformly form the surface of a dense nanometer composite transfer membrane consisting of PEEK-PTFE-graphene in the friction process, so that excellent wear resistance is achieved; meanwhile, due to the 'sea island' structure appearance and the nanometer composite microstructure, the composite material has excellent mechanical properties, particularly toughness.

Description

technical field [0001] The invention belongs to the technical field of functional composite material production. technical background [0002] As a high-performance semi-crystalline thermoplastic polymer, polyetheretherketone (PEEK) has excellent mechanical properties, chemical inertness, wide temperature range, and good thermal stability. It is used in bearing materials, bone implants, and pistons. It is widely used as a substitute for metal components in many fields such as rings. However, its wide application is limited due to its high coefficient of friction (>0.4 for PEEK under dry sliding) and stick-slip behavior. [0003] In order to improve the tribological properties of PEEK, many researchers added various fillers such as SiO 2 , Al 2 o 3 , carbon fiber (CF), graphene, PTFE, carbon nanotubes, etc., and their various combinations. Among these lubricating fillers, CF and PTFE particles are widely used because of their excellent properties. Carbon fibers not o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L61/16C08L27/18C08K9/02C08K3/04C08K3/26
Inventor 朱爱萍彭勃徐培兴申维新毛正和
Owner 扬州市维纳复合材料科技有限公司
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