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Anion in situ preparation method of polysulfone analog/MC nylon6 composite material

A composite material and in-situ preparation technology, applied in the field of material science, can solve problems such as poor dimensional stability and thermal stability, and difficulty in meeting the high-performance requirements of large parts

Inactive Publication Date: 2006-11-22
HUAQIAO UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the further expansion of the application range of MC nylon, higher and higher requirements are put forward for its performance, especially its poor dimensional stability and thermal stability, etc., it is difficult to meet the high performance requirements of large parts

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] The following examples are to further illustrate the present invention, but not to limit the scope of the present invention.

[0013] The anion in-situ preparation method of the polysulfone / MC nylon 6 composite material of the present invention is realized through the following steps:

[0014] In the first step, 100 parts by weight of caprolactam is placed in a reaction vessel and heated to 110° C., vacuum dehydrated for 30 minutes, and the vacuum is 10 -1 -10 -3 Pa, add 0.35 parts by weight of sodium hydroxide as a catalyst, and continue vacuum dehydration for 30 minutes.

[0015] The second step is to open the valve, remove the vacuum, add 5 parts by weight of phthalein pendant polyarylether sulfone, raise the temperature to 150° C., and stir magnetically to fully dissolve the phthalein pendant polyarylether sulfone in the caprolactam melt until uniformly dispersed. Vacuum dehydration for 30min, vacuum degree is 10 -1 -10 -3 Pa.

[0016] The third step is to remo...

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PUM

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Abstract

The invention discloses an anion home position preparing method of polysulfone and MC nylon 6 composite material, which comprises the following steps: melting caprolactam monomer; dewatering in the vacuum; adding catalyst to dewater in the vacuum continually; adding polysulfone resin; stirring through magnetism to disperse polysulfone; adding activator; casting the mixture in the preheat mould; demoulding to produce the composite material of polysulfone and MC nylon 6. The invention possesses certain elastic modulus, bending strength, which improves the heat-durability of pure MC nylon by 80 deg.c.

Description

technical field [0001] The invention relates to the preparation of an in-situ polysulfone / MC nylon 6 composite material by adopting an anionic polymerization method, and belongs to the field of material science and technology. Background technique [0002] Cast nylon 6 (MC nylon 6) is a kind of nylon material. Its preparation method is to dehydrate the molten caprolactam under normal pressure under reduced pressure, and add a strong alkaline substance as a catalyst for further dehydration, and then mix with an activator (such as Isocyanate) and other additives are mixed together and directly injected into the preheated mold at a certain temperature. The material undergoes rapid polymerization reaction in the mold and solidifies into a solid billet. MC nylon has the advantages of low polymerization temperature, simple process, high crystallinity, large molecular weight, higher mechanical properties than ordinary nylon, wear resistance, self-lubrication, shock absorption and n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L81/06C08L77/02
Inventor 林志勇钱浩陈婉吟黄丽丹黄锦河陈瑜姚辉梅
Owner HUAQIAO UNIVERSITY