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

A technology of high temperature resistance and nylon, which is applied in the field of polymer synthesis, can solve the problems that cannot explain the high temperature resistance of nylon, the difficulty of production and processing, and poor fluidity, etc., and achieve the effect of low equipment cost, reduced environmental pressure, and moderate viscosity

Inactive Publication Date: 2014-11-26
SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
View PDF6 Cites 25 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-temperature-resistant nylon PA66T material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] (1) Weigh 1827.43g (11.00mol) of terephthalic acid, 1315.26g (9.00mol) of adipic acid, 2231.232g (19.20mol) of hexamethylenediamine, 1.2896g (0.015mol) of sodium hypophosphite, and mix Evenly pour it into the polymerization reactor, inject 4.50kg of deionized water (250mol) and nucleating agent barium sulfate 8.1687g (0.035mol) into the reactor, turn on the stirring device, the stirring speed is 60r / min, fill in Vacuumize with nitrogen, repeat 3 times, remove the air reserved in the kettle, and reserve 0.01MPa nitrogen as protective gas.

[0046] (2) Raise the temperature in the reactor to 130°C by circulating heat transfer oil and keep it warm for 2.5 hours, so that the polymerized monomers are completely dissolved in the solvent deionized water.

[0047](3) After the heat preservation is over, continue to increase the temperature in the reactor until the pressure in the reactor is 2.3MPa, maintain the pressure for 2 hours, and increase the temperature of the reactor w...

Embodiment 2

[0049] (1) Weigh 1873.116g (11.275mol) of isophthalic acid, 1348.142g (9.225mol) of adipic acid, 2298.924g (19.7825mol) of hexamethylenediamine, 4.25g (0.025mol) of calcium hypophosphite, and mix well And pour it into the polymerization reactor, inject 4.86kg of deionized water (270mol) and nucleating agent talc powder 11.7387g (0.045mol) into the reactor, turn on the stirring device, the stirring speed is 60r / min, and fill with carbon dioxide Carry out vacuuming, repeat 3 times, remove the air reserved in the kettle, and reserve 0.02MPa carbon dioxide as a protective gas.

[0050] (2) The temperature in the reactor was raised to 150°C by circulating the heat transfer oil and kept for 2.0 hours, so that the polymerized monomers were completely dissolved in the solvent deionized water.

[0051] (3) After the heat preservation is over, continue to increase the temperature in the reactor until the pressure in the reactor is 2.5MPa, maintain the pressure for 1.5 hours, and raise t...

Embodiment 3

[0053] (1) Weigh 1918.8015g (11.55mol) of phthalic acid, 1381.023g (9.45mol) of adipic acid, 2367.1977g (20.37mol) of hexamethylenediamine, 2.0414g (0.020mol) of potassium hypophosphite, and mix Evenly pour it into the polymerization reactor, inject 5.22kg deionized water (290mol) and nucleating agent silicon dioxide 3.0042g (0.05mol) into the reactor, turn on the stirring device, the stirring speed is 60r / min, and fill Inject argon for vacuuming, repeat 3 times, remove the air reserved in the kettle, and reserve 0.03MPa argon as a protective gas.

[0054] (2) The temperature in the reactor was raised to 145°C by circulating heat transfer oil and kept for 2.0 hours, so that the polymerized monomers were completely dissolved in the solvent deionized water.

[0055] (3) After the heat preservation is over, continue to increase the temperature in the reactor until the pressure in the reactor is 2.5MPa, maintain the pressure for 1.5 hours, and raise the temperature of the reactor ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

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 ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C08G69/26C08G69/28C08L77/06
Inventor 杨桂生柯昌月
Owner SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap