High-temperature-resistant nylon PA66T material and preparation method thereof

Abstract

The invention belongs to the field of polymer synthesis, and relates to a high-temperature-resistant nylon PA66T material and a preparation method thereof. The nylon PA66T material is prepared from the following components in mole number: 11.00-12.32 moles of aromatic binary acid, 9.00-9.90 moles of hexane diacid, 19.20-21.34 moles of hexamethylenediamine, 0.035-0.05 mole of a nucleating agent, 0.015-0.03 mole of a catalyst and 250-300 mole of deionized water. The high-temperature-resistant nylon PA66T material provided by the invention has the advantages of light weight, high temperature resistance, high mechanical strength, superior size stability and the like, and is suitable to be applied in a high-temperature environment; and meanwhile, the high-temperature-resistant nylon PA66T material is simple in the synthesis process, is moderate in viscosity, and is suitable for industrial popularization and subsequent machine shaping.

Description

technical field [0001] The invention belongs to the field of polymer synthesis, and relates to a nylon PA66T material and a preparation method thereof. Background technique [0002] Nylon (polyamide) is the most widely used thermoplastic engineering plastic at home and abroad. It has excellent properties such as toughness, wear resistance, impact resistance, fatigue resistance, corrosion resistance, and oil resistance. It is widely used in auto parts, electronic appliances, etc. In the past 60 years, industries such as machinery and machinery have grown steadily in the fierce competition of engineering plastics, and their demand has ranked first among the five major engineering plastics so far. [0003] At present, in many fields such as civil electronic appliances, toys, communications, cables, military industry, etc., it involves parts that can withstand high temperatures above 100 degrees, and requires high mechanical strength. This series of products basically use metal ...

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Problems solved by technology

[0003] At present, in many fields such as civil electronic appliances, toys, communications, cables, military industry, etc., it involves parts that can withstand high temperatures above 100 degrees, and requires high mechanical strength. This series of products basically use metal raw materials in the market. Processing and production, it has defects such as difficult production and processing, cumbersome links, high cost, and low production efficiency. High temperature nylon PA66T material will be one of the more ideal materials

[0004] After searching the literature of the prior art, it is found that Chinese patent CN102477219 A discloses a high-temperature-resistant semi-aromatic nylon and its preparation method. Although the obtained material has certain high-temperature resistance, its high viscosity and poor fluidity are not conducive to processing and molding. At the same time, further processing is required after synthesis, so the process is cumbersome and the cost is relatively high

Chinese patent CN102911497A discloses a high-temperature-resistant nylon, but it adopts processing and modification of nylon, so what it obtains is a high-temperature-resistant nylon composite material, which basically cannot explain the high-temperature resistance of nylon itself.

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