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

A PA66, high-temperature-resistant technology, applied in the field of polymer synthesis, can solve problems such as insufficient salt formation process, lumpy nodes in material strips, etc., and achieve the effects of simple reaction steps, reduced environmental pressure, and low equipment cost

Active Publication Date: 2015-07-15
SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the insufficient salt-forming process in the process of synthesizing high-temperature-resistant nylon, which leads to related defects such as lumps and nodes in the material strip during the discharging process, the purpose of the present invention is to provide a high-temperature-resistant nylon PA66T material, which has light weight, high temperature resistance, and mechanical strength. In addition to the advantages of high temperature and excellent dimensional stability, it also has the advantages of smooth discharge strip (no knot problem), good continuity, and ideal appearance of the obtained nylon particles, which is more conducive to industrialization promotion and daily production and sales.

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049]Weigh and dry nylon 6T salt 2823.4g (approximately 10mol), polymer PA662263.5g (approximately 10mol), end-capping agent benzoic acid 61.06g (approximately 0.5mol), catalyst sodium hypophosphite 1.2896g ( About 0.015mol) mix well and pour it into the high-pressure polymerization reactor, inject 3.60kg deionized water (200mol) and nucleating agent barium sulfate solution 101.34g (mass fraction is 8.06%, 0.035mol barium sulfate) under high pressure In the polymerization reactor, turn on the stirring device, fill it with nitrogen for vacuuming, and repeat 3 times to fully remove the air reserved in the reactor, and reserve 0.03MPa nitrogen as a protective gas.

[0050] The reactor is heated and heated by circulating heat transfer oil. At this time, the pressure in the reactor rises. When the pressure in the reactor reaches 1.5 MPa, the constant pressure of the reactor is maintained by releasing the moisture generated by the system reaction. Raise the temperature of the react...

Embodiment 2

[0053] Weigh and dry nylon 6T salt 3726.88g (approximately 13.2mol), polymer PA661991.88g (approximately 8.8mol), capping agent benzoic acid 183.18g (approximately 1.5mol), catalyst calcium hypophosphite 4.25 (0.025mol), mix well and pour it into a high-pressure polymerization reactor, inject 4.5kg of deionized water (250mol) and 143.8575g of nucleating agent talc powder solution (mass fraction is 8.16%, 0.045mol talc powder) in high pressure In the polymerization reactor, turn on the stirring device, fill it with nitrogen for vacuuming, and repeat 3 times to fully remove the air reserved in the reactor, and reserve 0.05MPa nitrogen as a protective gas.

[0054] The reactor is heated and heated by circulating heat transfer oil. At this time, the pressure inside the reactor rises. When the pressure in the reactor reaches 2.5MPa, the constant pressure of the reactor is realized by releasing the moisture generated by the system reaction. Continue through the circulation of heat tr...

Embodiment 3

[0057] Weigh and dry nylon 6T salt 3388.08g (approximately 12mol), polymer PA661810.8g (approximately 8.0mol), capping agent acetic acid 60.05g (approximately 0.4mol), catalyst potassium hypophosphite 2.0414g ( 0.020mol), mix well and pour it into the high-pressure polymerization reactor, inject 4.95kg deionized water (275mol) and nucleating agent silica solution 39.7354g (mass fraction is 7.56%, 0.05mol silica) in In the high-pressure polymerization reactor, the stirring device was turned on, the stirring speed was 60r / min, and nitrogen was filled for vacuuming, and repeated 3 times to fully remove the air reserved in the reactor, and reserve 0.10MPa nitrogen as a protective gas.

[0058] The reactor is heated and heated by circulating heat transfer oil. At this time, the pressure in the reactor rises. When the pressure in the reactor is 3.0 MPa, the constant pressure of the reactor is maintained by releasing the moisture generated by the system reaction. Raise the temperatur...

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Abstract

The invention discloses a high-temperature-resistant nylon PA66T material prepared by the following components by the mole number: 10.00-13.20 mol of a nylon 6T salt, 8.00-11.00 mol of a polymer PA66, 0.50-1.50 mol of an end sealing agent, 0.035-0.050 mol of a nucleating agent, 0.015-0.030 mol of a catalyst, and 200-275 mol of a solvent. The invention also discloses a preparation method for the high-temperature-resistant nylon PA66T material. The material has the advantages of light weight, high-temperature resistance, high mechanical strength, good dimensional stability and the like.

Description

technical field [0001] The invention belongs to the technical field of polymer synthesis, and in particular relates to a high-temperature-resistant 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] With the needs of industrial development, there is a tendency to use high-temperature-resistant polymer materials instead of metal and thermosetting materials for the casings of most motors and heat-generating parts newly des...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C08K3/30C08K3/32C08G69/28
CPCC08G69/28C08L77/06C08L2201/08C08L2205/025C08L2205/24C08K2003/3045C08K3/34C08K3/36C08K2003/265C08K2003/2241
Inventor 杨桂生柯昌月
Owner SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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