Antistatic PEEK composite material and preparation method thereof

A composite material and antistatic technology, applied in the field of composite materials, can solve the problems of unimproved mechanical properties of PEEK resin, uneven distribution of carbon fibers, affecting the surface resistance of materials, etc., to achieve uniform surface resistance, improve surface activity, and reduce surface resistance. Effect

Inactive Publication Date: 2016-04-27
NANJING COMPTECH COMPOSITES CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the agglomeration of carbon fibers, the addition of PEEK will lead to poor toughness of the overall material, and the uneven distribution of carbon fibers in the PEEK matrix will affect the surface resistance of the material.
Only adding carbon black materials does not improve the mechanical properties of PEEK resin

Method used

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  • Antistatic PEEK composite material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The preparation method of the antistatic PEEK composite material comprises the following steps:

[0016] A. Dissolve 0.64 parts of PEEK with a degree of sulfonation of 80 in water, add 30 parts of chopped carbon fibers and 2 parts of carbon nanotubes, stir and heat to 90°C for 48 hours, filter, dry and pulverize;

[0017] B. 68 parts of PEEK powder and the powder obtained in step A are added to ethanol, and fully stirred to make all materials evenly blended;

[0018] C. Suction filtration, ethanol recovery, put the mixed material into the cavity of a hot-pressing mold at 395-400 ° C, and after melting, shape under a pressure of 10Mpa, and cool and demould;

[0019] D. The material after demoulding is kept at 250℃ for 60min, and the pressure of the whole heat preservation process is 4Mpa, and the finished product is obtained.

[0020] The properties of the prepared antistatic PEEK composite material were tested, and the test results are shown in Table 1.

Embodiment 2

[0022] The preparation method of the antistatic PEEK composite material comprises the following steps:

[0023] A. Dissolve 0.32 parts of PEEK with a degree of sulfonation of 70 in water, add 15 parts of chopped carbon fibers and 1 part of carbon nanotubes, stir and heat to 90°C for 48 hours, filter, dry and pulverize;

[0024] B, 84 parts of PEEK powder and the powder obtained in step A are added to ethanol, and fully stirred to make all materials evenly blended;

[0025] C, suction filtration, put the mixed material into the cavity of the hot-pressing mold at 395-400 ° C, after melting, shape under 10Mpa pressure, cool and demould;

[0026] D. The material after demoulding is kept at 250℃ for 60min, and the pressure of the whole heat preservation process is 4Mpa, and the finished product is obtained.

[0027] The properties of the prepared antistatic PEEK composite material were tested, and the test results are shown in Table 1.

Embodiment 3

[0029] The preparation method of the antistatic PEEK composite material comprises the following steps:

[0030] A. Dissolve 0.53 parts of PEEK with a sulfonation degree of 75 in water, add 25 parts of chopped carbon fibers and 1.5 parts of carbon nanotubes, stir and heat to 90°C for 48 hours, filter, dry and pulverize;

[0031] B. 73.5 parts of PEEK powder and the powder obtained in step A are added to ethanol, and fully stirred to make all materials evenly blended;

[0032] C, suction filtration, put the mixed material into the cavity of the hot-pressing mold at 395-400 ° C, after melting, shape under 10Mpa pressure, cool and demould;

[0033] D. The material after demoulding is kept at 250℃ for 60min, and the pressure of the whole heat preservation process is 4Mpa, and the finished product is obtained.

[0034] The properties of the prepared antistatic PEEK composite material were tested, and the test results are shown in Table 1.

[0035]

[0036] Remarks: Friction and...

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Abstract

The invention discloses an antistatic PEEK composite material. The antistatic PEEK composite material is prepared from 68-84 parts of PEEK, 15-30 parts of short carbon fibers and 1-2 parts of carbon nanotubes. The short carbon fibers and the carbon nanotubes are subjected to sulfonated PEEK surface treatment and a sulfonation degree of the sulfonated PEEK is 70-80. The invention also discloses a preparation method of the antistatic PEEK composite material. Through use of the short carbon fibers and the carbon nanotubes in PEEK, wear resistance, tensile strength and modulus of the PEEK material can be effectively improved, surface resistance is uniform and antistatic requirements are satisfied. The short carbon fibers and the carbon nanotubes are subjected to high sulfonated PEEK treatment so that surface activity is improved, dispersion in the PEEK base is promoted, agglomeration is reduced, carbon fibers, carbon nanotubes and PEEK in the composite material are bonded tightly, material toughness is improved and surface resistance is reduced.

Description

technical field [0001] The invention relates to an antistatic PEEK composite material and a preparation method thereof, and belongs to the field of composite materials. Background technique [0002] Polyetheretherketone (PEEK) is a linear aromatic polymer compound containing chain segments in the main chain of the molecule. It is a thermoplastic special engineering plastic with high temperature resistance and high performance. PEEK has good mechanical properties and chemical resistance, abrasion resistance, hydrolysis resistance and other properties; light specific gravity, good self-lubricating performance, and very good processing performance, can be applied to aviation, machinery, electronics, chemicals, automobiles and other high-tech In the industrial field, it can especially manufacture high-demand mechanical parts used in high-speed railway trains with a speed of up to 350KM / h, such as gears, bearings, piston rings, support rings, sealing rings (boxes), valve plates, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L61/16C08K9/04C08K9/02C08K7/06C08K7/24
Inventor 杨文光陈佩民靳予孙克原杨勇
Owner NANJING COMPTECH COMPOSITES CORP
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