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Copolymerization transparent nylon and preparation method for same

A transparent and copolymerized technology, applied in the field of nylon materials, can solve the problems of reduced processing performance and resin fluidity, and achieve the effects of reduced regularity, low water absorption, and reduced interaction force

Active Publication Date: 2017-10-24
株洲时代工程塑料科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the expansion of the application field of transparent nylon, more stringent requirements have been put forward for the temperature resistance of transparent resins. At present, ring structures are mostly introduced into the molecular chains of transparent nylon, so that the resin will be caused by the benzene ring or alicyclic structure. The fluidity of the transparent nylon is reduced, and the processing performance is reduced. Therefore, it needs to improve the heat resistance and polymerization process of transparent nylon

Method used

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  • Copolymerization transparent nylon and preparation method for same
  • Copolymerization transparent nylon and preparation method for same
  • Copolymerization transparent nylon and preparation method for same

Examples

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Embodiment 1

[0031] A copolymerized transparent nylon of the present invention is mainly formed by polycondensation of component A and component B; wherein, component A is formed by polymerization of terephthalic acid and 2-methylpentamethylenediamine in a molar ratio of 1:1 Component B is a salt formed by the polymerization of 1,3-bis(3-aminopropyl)-tetramethyldisiloxane and adipic acid in a molar ratio of 1:1; wherein, component A The mass ratio to component B is 70%:30%.

[0032] The preparation method of the copolymerized transparent nylon of the present embodiment comprises the following steps:

[0033] (1) Put terephthalic acid and 2-methylpentamethylenediamine with a molar ratio of 1:1 into an automatic control polymerization kettle with a stirrer, and react under a pressure of 1 bar, a temperature of 80°C and a nitrogen atmosphere , to obtain component A;

[0034] (2) Adipic acid and 1,3-bis(3-aminopropyl)-tetramethyldisiloxane with a molar ratio of 1:1 are put into an automatic ...

Embodiment 2

[0037] A copolymerized transparent nylon of the present invention is mainly formed by polycondensation of component A and component B; wherein, component A is formed by polymerization of terephthalic acid and 2-methylpentamethylenediamine in a molar ratio of 1:1 Component B is a salt formed by the polymerization of 1,3-bis(3-aminopropyl)-tetramethyldisiloxane and adipic acid in a molar ratio of 1:1; wherein, component A The mass ratio to component B is 80%:20%.

[0038] The preparation method of the copolymerized transparent nylon of the present embodiment comprises the following steps:

[0039] (1) Put terephthalic acid and 2-methylpentamethylenediamine with a molar ratio of 1:1 into an automatic control polymerization kettle with a stirrer, and react under a pressure of 1 bar, a temperature of 80°C and a nitrogen atmosphere , to obtain component A;

[0040] (2) Adipic acid and 1,3-bis(3-aminopropyl)-tetramethyldisiloxane with a molar ratio of 1:1 are put into an automatic ...

Embodiment 3

[0043] A copolymerized transparent nylon of the present invention is mainly formed by polycondensation of component A and component B; wherein, component A is formed by polymerization of terephthalic acid and 2-methylpentamethylenediamine in a molar ratio of 1:1 Component B is a salt formed by the polymerization of 1,3-bis(3-aminopropyl)-tetramethyldisiloxane and adipic acid in a molar ratio of 1:1; wherein, component A The mass ratio to component B is 90%:10%.

[0044] The preparation method of the copolymerized transparent nylon of the present embodiment comprises the following steps:

[0045] (1) Put terephthalic acid and 2-methylpentamethylenediamine with a molar ratio of 1:1 into an automatic control polymerization kettle with a stirrer, and react under a pressure of 1 bar, a temperature of 80°C and a nitrogen atmosphere , to obtain component A;

[0046] (2) Adipic acid and 1,3-bis(3-aminopropyl)-tetramethyldisiloxane with a molar ratio of 1:1 are put into an automatic ...

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Abstract

The invention discloses copolymerization transparent nylon which is mainly composed of a component A and a component B through condensation polymerization. The component A is a salt which is formed by polymerizing aromatic binary acid and 2-methyl pentanediamine; and the component B is a salt which is formed by polymerizing diaminosiloxane and aliphatic binary acid. The preparation method includes the steps of: adding the aromatic binary acid and the 2-methyl pentanediamine into an auto-control polymerization kettle with a stirrer to perform a reaction to obtain the component A; adding the aliphatic binary acid and the diaminosiloxane into the auto-control polymerization kettle with the stirrer to perform a reaction to obtain the component B; and feeding a catalyst, an initiator, the component A and the component B into a high-pressure reaction kettle to perform a polymerization reaction to produce the copolymerization transparent nylon. The copolymerization transparent nylon has better transparency, lower water absorption rate and higher heat resistance than semi-aromatic transparent nylon 6T / 6I and cycloaliphatic transparent nylon.

Description

technical field [0001] The invention belongs to the field of nylon materials, in particular to a copolymerized transparent nylon containing inorganic silicon and a preparation method thereof. Background technique [0002] Nylon material is a material with a wide range of uses. Because its molecular chain contains amide groups, polyamide has excellent characteristics such as high mechanical strength, good impact resistance, excellent heat resistance, wear resistance and oil resistance. , Widely used in machinery, chemical industry, especially in the national economic fields such as automobiles and power electronics, it plays a very important role. However, due to the regular arrangement of molecular chains, nylon has poor transparency, and it is difficult to play its role in some fields that require high transparency of materials. For this reason, research on transparent nylon has been carried out extensively at home and abroad. Transparent nylon is generally an amorphous p...

Claims

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Application Information

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IPC IPC(8): C08G69/42
CPCC08G69/42
Inventor 易勇王文志彭军曹凯凯伍威
Owner 株洲时代工程塑料科技有限责任公司
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