Poly(ether-ether-ketone) composite material, production method and application of sealing member

Abstract

The invention relates to a polyether-ether-ketone composite material which consists of polyether-ether-ketone, nanoparticles, filling materials and addition agent materials. The composite material comprises 75 to 95 portions of polyether-ether-ketone powders, 5 to 10 portions of the nanoparticles, 10 to 20 portions of the filling materials and 2 to 5 portions of the additive agents by weight. The filling materials are glass fiber, carbon fiber, quartz powder and MoS2 or toner. A method of compression moulding forming adopted is that: materials is prepared according to the formula; materials are mixed: the materials prepared according to designed requirements poured into an automatic material mixing machine for evenly mixing, the mixing time is between 0.5 minute and 3 minutes, then compressing process is carried out, and the blended mixture is sent to a mould cavity for moulding. The material can be used for sealing materials products. Various valve sealing elements produced by the invention has properties of creep resisting, corrosion resistance, heat resistance and pressurization, etc.; the ability of pressurization and wear resistance of the material are improved, and at the same time the cost is lowered by 10 to 20 percent or even higher, thus being beneficial to using and promotion of the materials.

Description

technical field [0001] The invention relates to a polyether ether ketone composite material, application and preparation method of a seal, in particular to a nano-material reinforced modified polyether ether ketone seal (KT-PEEK) and a preparation method, belonging to the field of sealing material products. Background technique [0002] Polyetheretherketone (PEEK) resin is a special engineering plastic with excellent performance. Compared with other special engineering plastics, it has many significant advantages, such as: high temperature resistance, excellent mechanical properties, good self-lubrication, chemical corrosion resistance, Flame retardancy, peel resistance, radiation resistance, stable insulation, hydrolysis resistance and easy processing, etc., are widely used in aerospace, automobile manufacturing, electrical and electronic, medical and food processing and other fields. [0003] Polyetheretherketone (PEEK) resin has excellent performance and is widely used. P...

AI Technical Summary

Problems solved by technology

Its advantages and disadvantages are obvious: polytetrafluoroethylene material has good corrosion resistance, small friction coefficient, and small torque to the valve, but it is resistant to temperature difference, long-term use temperature is ≤200 ℃, and it is easy to creep and cause leakage; graphite material is resistant to high temperature , light specific gravity, but not pressure-resistant, easy to break and cause leakage; nylon material has good compression resistance and hardness, and the price is relatively cheap, but its corrosion resistance is far inferior to that of PTFE, and its temperature resistance is relatively lower than that of PTFE; carbon fiber / glass Fiber-filled PTFE composite material has improved pressure resistance, wear resistance and temperature resistance compared with pure PTFE material, but because 70 parts of the resin base material of this material is still fluororesin, its temperature can only be ≤ 250 ℃ work, long-term use temperature ≤ 200 ℃, and poor hydrolysis resistance; metal materials, such as stainless steel, temperature resistance, pressure resistance, corrosion resistance are better, but the friction coefficient is large, the specific gravity is large, the elasticity cannot be restored, and the sealing effect is not good

[0006] The performance of polyetheretherketone is good, but its cost is high. Therefore, under the premise of maintaining the excellent performance of polyetheretherketone with corrosion resistance, temperature resistance and pressure resistance, it is necessary to further improve the mechanical properties, improve the pressure resistance and wear resistance. strength, while reducing the cost of PEEK composites and the preparation process has not been proposed

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