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High temperature resistant nylon multipolymer and preparation method thereof

A multi-component copolymer and high-temperature-resistant technology, which is applied in the field of high-temperature-resistant nylon multi-component copolymer and its preparation, can solve the problems of industrialization development difficulties, high price of dodecyl diamine, etc., and achieve good high temperature resistance, impact performance and processing Improved fluidity and high impact strength

Active Publication Date: 2014-06-04
SHANDONG GUANGYIN NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, due to the relatively high price of dodecyl diamine, there are still some difficulties in its industrialization development

Method used

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  • High temperature resistant nylon multipolymer and preparation method thereof
  • High temperature resistant nylon multipolymer and preparation method thereof
  • High temperature resistant nylon multipolymer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Dissolve dodecanedibasic acid and p-xylylenediamine in ethanol and form a salt, adjust the pH to 7.2-7.8, then add PA66 salt and caprolactam, fully dissolve and mix; put the mixture into a 12L polymerization kettle, heat up, and Polymerization at 180°C and 1.5MPa pressure for 4 hours to obtain PA12T / 66 / 6 multi-component copolymer. Among them, the molar ratio of dodecanedibasic acid, p-xylylenediamine, PA66 salt, and caprolactam is 40:40:10:10, and the amount of ethanol is 10 times the mass of p-xylylenediamine.

Embodiment 2

[0031] Dissolve dodecanedibasic acid and p-xylylenediamine in dimethylformamide and form a salt, adjust the pH to 7.2-7.8, then add PA66 salt and caprolactam, fully dissolve and mix; put the mixture into a 12L polymerization kettle , heat up, and polymerize for 7 hours at 220°C under 2MPa pressure to obtain PA12T / 66 / 6 multi-component copolymer. Among them, the molar ratio of dodecanedibasic acid, p-xylylenediamine, PA66 salt, and caprolactam is 35:35:20:10, and the amount of dimethylformamide is 15 times the mass of p-xylylenediamine.

Embodiment 3

[0033] Dissolve dodecanedioic acid and p-xylylenediamine in dimethyl sulfoxide and neutralize to form a salt, adjust the pH to 7.2-7.8, then add PA66 salt and caprolactam, fully dissolve and mix; put the mixture into a 12L polymerization kettle , heat up, and polymerize for 10 hours at 260°C under 3MPa pressure to obtain PA12T / 66 / 6 multi-polymer. Among them, the molar ratio of dodecanedibasic acid, p-xylylenediamine, PA66 salt, and caprolactam is 30:30:15:15, and the amount of dimethyl sulfoxide is 20 times the mass of p-xylylenediamine.

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Abstract

The invention discloses a high temperature resistant nylon multipolymer. The high temperature resistant nylon multipolymer is prepared by carrying out polymerization reaction on the following raw materials by mole percent: 15-45% of dodecanedioic acid, 30-65% of para-benzene dimethylamine, 1-20% of PA66 salt and 1-20% of caprolactam. The multipolymer not only has good impact strength, but also has good high temperature resistance.

Description

technical field [0001] The invention relates to a novel high-temperature-resistant nylon multi-component copolymer and a preparation method thereof. Background technique [0002] High temperature resistant polyamide is one of the members of the polyamide family. It has high temperature resistance due to its molecular structure containing benzene ring or other aromatic ring structure. It is usually composed of aliphatic, alicyclic diacid or diamine and aromatic It can also be obtained by polycondensation of three or more diacids / diamines according to performance requirements. [0003] At present, the most widely used high-temperature resistant nylon is DSM's PA46, but since PA46 is still aliphatic nylon, it is still inferior to aromatic or semi-aromatic nylon in terms of high temperature resistance and mechanical properties. Semi-aromatic nylon is a polyamide resin prepared by polycondensation of diamines with aromatic rings and aliphatic diacids or diamines, and is one of t...

Claims

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Application Information

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IPC IPC(8): C08G69/36
Inventor 郎丰正崔强鲍允纪杜兆强
Owner SHANDONG GUANGYIN NEW MATERIALS