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Coordinated high-temperature-resistant polyamide material containing star-shaped crosslinking and preparation method of coordinated high-temperature-resistant polyamide material

A polyamide, high temperature resistant technology, applied in the field of polymer materials, can solve the problems of inability to meet, process, high glass transition and melting temperature, and achieve the effects of convenient operation, simple preparation process and easy control

Active Publication Date: 2022-01-14
SHANDONG DONGCHEN ENG PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The melting temperature of general-purpose aliphatic polyamides is lower than 260°C, which can no longer meet the requirements of the above fields
Fully aromatic polyamides have excellent thermal properties and mechanical strength, but their high glass transition and melting temperature prevent their processing by low-cost melting methods, which limits their wide-scale applications

Method used

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  • Coordinated high-temperature-resistant polyamide material containing star-shaped crosslinking and preparation method of coordinated high-temperature-resistant polyamide material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1. Experimental steps

[0030] 1. Preparation of coordination high temperature resistant polyamide materials containing "star" crosslinking

[0031] (1) Accurately weigh 1.1 parts by mass of hexamethylenediamine, 0.8 parts by mass of adipic acid, 0.8 parts by mass of terephthalic acid, 0.8 parts by mass of p-xylylenediamine, and 0.05 parts by mass of zinc acetate, and add to 1.5 parts by mass in turn In the aqueous solution, the temperature is 50°C, after adjusting the pH of the solution to 7.0, a transparent coordination salt solution is formed after heating for 1 hour;

[0032] (2) Heat and mix the transparent coordination salt solution prepared in step (1) with 0.1 parts by mass (molecular weight 1000) of "star" nuclear polyacrylic acid to form colorless transparent salt solution A, and add the A solution into the polymerization kettle, Pre-polymerization at 220°C for 3 hours to form polyamide with small molecular weight; secondary pre-polymerization at 280-300°C fo...

Embodiment 2

[0039] 1. Preparation of "star" crosslinked coordination type high temperature resistant polyamide resin

[0040] (1) Accurately weigh 0.5 parts by mass of hexamethylenediamine, 0.8 parts by mass of terephthalic acid, 0.5 parts by mass of p-xylylenediamine, 1.5 parts by mass of water, and 0.05 parts by mass of zinc acetate, and add them to 1.5 parts by mass of aqueous solution in sequence , after adjusting the pH of the solution to 7.0, it was heated for 1.5 hours to form a transparent coordination salt solution.

[0041](2) Heat and mix the transparent coordination salt solution prepared in step (1) with 0.1 parts by mass (molecular weight: 1000) of "star" core polyacrylic acid-co-acrylate to form transparent solution B, and add solution B to the polymerization kettle , Pre-polymerization at 220°C for 3 hours, pre-polymerization to form polyamide with small molecular weight; secondary pre-polymerization at 280-300°C for 60 minutes; pre-polymerization at 300-335°C for 15 minut...

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Abstract

The invention discloses a coordinated high-temperature-resistant polyamide material containing star-shaped crosslinking and a preparation method of the coordinated high-temperature-resistant polyamide material. The prepared polyamide material simultaneously contains a star-shaped coordination crosslinking aromatic polyamide component and a star-shaped coordination crosslinking aliphatic polyamide component, has high temperature resistance and workability, and can be applied to the aspects of engine accessories, reflow soldering and the like.

Description

technical field [0001] The invention relates to a coordination high-temperature-resistant polyamide material containing "star-shaped" crosslinks and a preparation method thereof, belonging to the technical field of polymer materials. Background technique [0002] With the development of industries such as 5G communication devices, electronic welding, surface mount technology, and automotive turbocharged engines, higher requirements have been placed on the high temperature resistance and mechanical properties of polyamide (nylon), which has also promoted high temperature The great development of nylon product research. The melting temperature of general-purpose aliphatic polyamides is lower than 260°C, which cannot meet the requirements of the above-mentioned fields. Wholly aromatic polyamides have excellent thermal properties and mechanical strength, but their high glass transition and melting temperature prevent their processing by low-cost melting methods, which limits th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G69/28C08G69/26
CPCC08G69/28C08G69/265
Inventor 武嘉李迎春王朝进田国锋毕燕
Owner SHANDONG DONGCHEN ENG PLASTIC
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