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A kind of ternary copolymerization high temperature resistant nylon and preparation method thereof

A high temperature resistant nylon technology, applied in the field of ternary copolymerization high temperature resistant nylon and its preparation, can solve the problems of less development of high temperature resistant nylon, low monomer activity, complex synthesis route, etc. A variety of effects with a simple synthesis route

Active Publication Date: 2022-07-08
ANSHAN HIFICHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are a series of problems in the current preparation methods of high-temperature-resistant nylon, such as fewer types of monomers, more complex synthetic routes, low activity of monomers, and less development of functionalized high-temperature-resistant nylon.

Method used

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  • A kind of ternary copolymerization high temperature resistant nylon and preparation method thereof
  • A kind of ternary copolymerization high temperature resistant nylon and preparation method thereof
  • A kind of ternary copolymerization high temperature resistant nylon and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0092] 1mol of 2,4-bisphenyl symmetric triazine-N-carboxyphenylphthalimide dibasic acid and 1mol or (116g) hexamethylenediamine are salted in water to obtain component A;

[0093] 1mol p-xylylenediamine and 1mol or adipic acid are salified in water to obtain component B;

[0094] Component A, B and nylon 66 salt mass are respectively 3kg, 5kg and 2kg into the reactor, and add 50g sodium hypophosphite and 500g deionized water, replace the air in the reactor with high-purity nitrogen 4 times, be warming up to 200 ℃, keep the pressure in the kettle at 2.5MPa;

[0095] Continue to heat up to 300°C, keep the pressure in the kettle at 2.0MPa, hold the pressure for 2h, release the air to normal pressure, drain the water in the system, and then gradually evacuate the system to depressurize the system to -0.05MPa, and discharge the material to obtain a ternary Copolymerized high temperature nylon.

[0096] Infrared test is carried out on the obtained final product ternary copolymeriz...

Embodiment 2

[0098] 1mol of 3,3',4,4'-p-terphenyl-N-carboxyphenylphthalimide and 1mol of hexamethylenediamine are salted in water to obtain component A;

[0099] 1mol of p-xylylenediamine and 1mol of adipic acid are salified in water to obtain component B;

[0100] Component A, B and nylon 66 salt are respectively 3kg, 5kg and 2kg into the reactor according to the mass, and an appropriate amount of sodium hypophosphite and deionized water are added, and the air in the reactor is replaced with high-purity nitrogen 4 times, and the temperature is increased to 200℃, keep the pressure in the kettle at 2.5MPa;

[0101] Continue to heat up to 320 °C, keep the pressure in the kettle at 2.0 MPa, after maintaining the pressure for 2 hours, release the air to normal pressure, discharge the water in the system, and then gradually vacuumize the system to depressurize the system to -0.05 MPa, and discharge the material to obtain a ternary Copolymerized high temperature nylon. The relative viscosity o...

Embodiment 3

[0103] 1mol of 3,3',4,4'-m-terphenyl-N-carboxyphenylphthalimide and 1mol of hexamethylenediamine are salted in water to obtain component A;

[0104] 1mol of p-xylylenediamine and 1mol of adipic acid are salified in water to obtain component B;

[0105] Component A, B and nylon 66 salt are respectively 3kg, 5kg and 2kg into the reactor according to the mass, and an appropriate amount of sodium hypophosphite and deionized water are added, and the air in the reactor is replaced with high-purity nitrogen 4 times, and the temperature is increased to 200 °C, keep the pressure in the kettle at 2.5MPa, continue to heat up to 320 °C, keep the pressure in the kettle at 2.0MPa, after maintaining the pressure for 2 hours, vent to normal pressure, drain the water in the system, and then gradually vacuumize the system to reduce the pressure to -0.04MPa, the ternary copolymerization high temperature resistant nylon is obtained after discharging. The relative viscosity of the obtained terpol...

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Abstract

The invention discloses a ternary copolymerized high temperature resistant nylon and a preparation method thereof. The ternary copolymerized high temperature resistant nylon has a structural part as shown in formula (I), in formula (I), a is 6-13, preferably 6, 9, 10, 11, 12 or 13, b is 4-11, preferably 4, 8, 10 or 11, c is 6-10, preferably 6, 9 or 10, d is 4-10, preferably 4, 8 or 10, R 1 One or more selected from the structures shown in formula (1)-(7). The high temperature nylon is made by the following method: will have R 1 The dibasic acid of the structure reacts with aliphatic diamine to obtain A; p-xylylenediamine reacts with aliphatic dibasic acid to obtain B; A and B react with aliphatic nylon salt to obtain ternary copolymerization high temperature resistant nylon . The ternary copolymerized high temperature resistant nylon of the present invention has excellent mechanical properties, heat resistance, flame retardancy and anti-droplet properties, and low water absorption, and can be used in the fields of electronic appliances, LED, automobiles, aerospace and military industries.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a ternary copolymerization high temperature resistant nylon and a preparation method thereof. Background technique [0002] Polyamide (PA), commonly known as nylon, is a general term for resins containing repeating amide groups on the molecular chain. Nylon is the basic resin with the largest output, the most varieties, the most widely used and the excellent comprehensive performance among the five general engineering plastics. High temperature nylon refers to nylon engineering plastics that can be used for a long time above 150 ℃. High temperature resistant nylon has good wear resistance, heat resistance, oil resistance and chemical resistance, and also greatly reduces the water absorption and shrinkage rate of raw materials, and has excellent dimensional stability and excellent mechanical strength. At present, the industrialized varieties are PA46, PA6T, PA9T and so on. In 1...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G69/26C08G69/28
CPCC08G69/265C08G69/28Y02E60/10
Inventor 徐惠祥王文志
Owner ANSHAN HIFICHEM CO LTD
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