Preparation method of polyether-ether-ketone/graphene oxide nano-composite film

Abstract

The invention belongs to a preparation method of a functional polymer and relates to a preparation method of a polyether-ether-ketone / graphene oxide nano-composite film. The polyether-ether-ketone / graphene oxide nano-composite film is prepared by blending graphene oxide treated by a silane coupling agent, and sulfonated polyether-ether-ketone by a tape casting method, and has high strength and good anti-wear and friction reduction effects. The polyether-ether-ketone / graphene oxide nano-composite film obtained by the preparation method solves the problem of organic and inorganic interface dispersion caused by other preparation methods, and realizes organic / inorganic nano-material compounding in a molecular level. The preparation method has simple processes, is convenient for operation, can be industrialized easily, and has potential application values in fields of structural materials, friction materials, heat-resistant materials and barrier materials.

Description

technical field [0001] The invention belongs to a method for preparing a functional polymer material, in particular to a method for preparing a polyether ether ketone / graphene oxide nanocomposite film. Background technique [0002] Polyetheretherketone (PEEK) is a fully aromatic semi-crystalline thermoplastic polymer. As a matrix of high-performance composite materials, it has excellent mechanical properties, heat resistance and chemical resistance. It is widely used in engineering and has become a successor Another popular wear-resistant and friction-reducing material after polytetrafluoroethylene (PTFE); the repeating unit of PEEK molecule has 19 carbon atoms, 12 hydrogen atoms and 3 oxygen atoms in a ratio of 3:2: 1, composed of benzene ring, ether bond, and carbonyl group. The existence of ether bond increases the flexibility of the molecular segment, which is conducive to the regular stacking of the segment to form a crystal structure; however, due to its complicated sy...

AI Technical Summary

Problems solved by technology

[0002]Polyether ether ketone (PEEK) is a kind of fully aromatic semi-crystalline thermoplastic polymer. As a matrix of high-performance composite materials, it has excellent mechanical properties and heat resistance And chemical resistance, widely used in engineering, so it has become another popular wear-resistant and anti-friction material after polytetrafluoroethylene (PTFE); the repeating unit of PEEK molecule has 19 carbon atoms, 12 Hydrogen atoms and 3 oxygen atoms are composed of benzene rings, ether bonds, and carbonyl groups with a quantitative ratio of 3:2:1. The existence of ether bonds increases the flexibility of molecular chain segments, which is conducive to the regular stacking of chain segments to form a crystal structure; However, due to its complex synthesis process, high cost, and high friction coefficient, its application is limited; therefore, researchers at home and abroad use polytetrafluoroethylene, polyphenylene sulfide, carbon fiber, glass fiber, and other micron However, it is still difficult to meet the requirements of high precision, high load, heat resistance, corrosion resistance and wear resistance; for example, glass fiber, carbon fiber and micron particle reinforcement The polyetheretherketone, due to the large size of particles and fibers, is hard after being broken, it is easy to damage the dual material during the friction process, and its wear resistance is not ideal as a friction-reducing and wear-resistant material; patent 200610097372.6 uses titanium-based crystal Whiskers are used to improve the anti-wear and anti-friction properties of PEEK composites. Although the mechanical and anti-wear properties of PEEK composites are improved by adding modified titanium-based whiskers, the amount of titanium-based whiskers is large, resulting in composites Difficulty in processing

[0003]Graphene is a layer of carbon atoms with a thickness of one atom. It is a two-dimensional carbon atom crystal discovered in recent years. It is considered to be fullerene, carbon nanotube (CNT ), the basic structural unit of graphite, because of its excellent properties in terms of force, heat, electricity, light, etc., it has attracted the attention of the physics and materials science circles; but graphene is not easy to prepare in large quantities, and exists in the form of aggregates macroscopically. To make full use of its high strength, high modulus, high conductivity, good chemical and heat resistance, high specific surface area and other characteristics, it is necessary to apply graphene to the reinforcement of polymer materials through physical or chemical modification methods; for Therefore, related research Macromolecules 2010, 43, 2357-2363, ACS Nano 2009, 3, 3884-3890, Macromolecules 2010, 43, 6716–6723, ACS Applied Materials & Interface 2010, 2, 1707-1713, adding graphene to Polyvinyl alcohol, epoxy, nylon 6, chitosan and other polymer matrices to improve the mechanical, mechanical, thermal and electrical properties of these polymers, and research on functionalized graphene-modified polyetheretherketone nanocomposite films Not yet reported