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Transparent copolymer nylon and preparation method thereof

A transparent and nylon technology, which is applied in the field of copolymerized transparent nylon and its preparation, can solve the problems of polyamide crystallization speed, complex process, and difficult control of process conditions, and achieve excellent transparency, simple preparation method, and excellent comprehensive performance. Effect

Active Publication Date: 2014-09-10
GUANGZHOU CHENDONG NEW MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the random copolymerization of linear aliphatic monomers has limited damage to the sequence regularity of the product, and the polyamide crystallization rate is fast, and the process conditions are difficult to control
The aromatic transparent polyamide and semi-aromatic transparent polyamide have a more complicated process due to the presence of aromatic monomers.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A copolymerized transparent nylon polymerized from the following components:

[0019] Monomer A with a mass content of 96%: caprolactam

[0020] A mass content of 2% monomer B: a mixture of adipic acid monomer and m-xylylenediamine monomer in a molar ratio of 1:1;

[0021] Monomer E with a mass content of 2%: monomer C and monomer D react at a molar ratio of 1:1 to obtain monomer E, wherein monomer C is alicyclic diamine PACM; monomer D is aliphatic diamine Adipic acid

[0022] The preparation method of described copolymerization transparent nylon, comprises the steps:

[0023] 1) Put monomer A, monomer B, monomer C and monomer D into an automatic control polymerization kettle with a stirrer, and carry out dehydration reaction at a pressure of 1-27bar and a temperature of 220-320°C;

[0024] 2) After the reaction, inject nitrogen gas to discharge the moisture generated by the reaction, and then pressurize again to discharge the copolymerized transparent nylon melt, w...

Embodiment 2

[0026] A copolymerized transparent nylon polymerized from the following components:

[0027] Monomer A with a mass content of 92.5%: caprolactam

[0028] A mass content of 5.5% monomer B: poly-m-xylylene adipamide (MXD6) salt;

[0029] Monomer E with a mass content of 2%: monomer C and monomer D are reacted at a molar ratio of 1:1 to obtain monomer E, wherein monomer C is alicyclic diamine IPDA; monomer D is aliphatic diamine Adipic acid

[0030] The preparation method of described copolymerization transparent nylon, comprises the steps:

[0031] 1) Put monomer A, monomer B, monomer C and monomer D into an automatic control polymerization kettle with a stirrer, and carry out dehydration reaction at a pressure of 1-27bar and a temperature of 220-320°C;

[0032] 2) After the reaction, inject nitrogen gas to discharge the moisture generated by the reaction, and then pressurize again to discharge the copolymerized transparent nylon melt, which is molded by die casting, cooled a...

Embodiment 3

[0034] A copolymerized transparent nylon polymerized from the following components:

[0035] Monomer A with a mass content of 92.5%: caprolactam

[0036] A mass content of 2.5% monomer B: poly-m-xylylene adipamide (MXD6) prepolymer;

[0037] Monomer E with a mass content of 5%: monomer C and monomer D are reacted at a molar ratio of 1:1 to obtain monomer E, wherein monomer C is alicyclic diamine IPDA; monomer D is aliphatic diamine Adipic acid

[0038] The preparation method of described copolymerization transparent nylon, comprises the steps:

[0039] 1) Put monomer A, monomer B, monomer C and monomer D into an automatic control polymerization kettle with a stirrer, and carry out polycondensation and dehydration reaction at a pressure of 1-27bar and a temperature of 220-320°C;

[0040] 2) After the reaction, inject nitrogen gas to discharge the moisture generated by the reaction, and then pressurize again to discharge the copolymerized transparent nylon melt, which is mold...

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PUM

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Abstract

The invention provides transparent copolymer nylon. The transparent copolymer nylon is prepared by polymerizing the following components by mass percent: 80-96% of a monomer A, 2-10% of a monomer B and 2-10% of a monomer E, wherein the monomer A is lactam; the monomer B is a mixture of an adipic acid monomer and an m-xylylenediamine monomer in a mole ratio of 1:1, a poly-m-xylylenediamine adipamide (MXD6) salt or an MXD6 prepolymer; the monomer E is obtained through reaction between a monomer C and a monomer D in a mole ratio of 1:1; the monomer C is alicyclic diamine; the monomer D is an aliphatic binary acid. The transparent copolymer nylon is prepared by polymerizing the monomer A, the monomer B, the monomer C and the monomer D together and has excellent transparency and comprehensive properties compared with the conventional nylon 6, nylon 66 and nylon 6 / 66 copolymer.

Description

technical field [0001] The invention relates to the technical field of polymer material nylon synthesis, in particular to a copolymerized transparent nylon and a preparation method thereof. Background technique [0002] Wallace Carothers of DuPont in the United States invented polyamide in the 1930s. Polyamide has high mechanical strength, good impact resistance, excellent heat resistance, wear resistance and oil resistance, etc. It is widely used in machinery and chemical industry, and plays a very important role in national economic fields such as water conservancy, national defense, and transportation. role. [0003] However, nylon has poor transparency, and it is difficult to play a 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 polymer, and its light transmittance is similar to that of optical glass. It is w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G69/36
Inventor 高原梁效礼杨冬黄俊辉张海春
Owner GUANGZHOU CHENDONG NEW MATERIALS
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