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A kind of preparation method of high temperature resistant low hygroscopicity copolymerized nylon

A technology of copolymerized nylon and low hygroscopicity, applied in the field of polyamide, which can solve problems such as complex compatibility changes, and achieve the effects of low water absorption, high stability, and excellent dimensional stability

Active Publication Date: 2017-01-11
辰东意普万新材料(广东)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When Ahn et al. studied the melt blending system of PA66 and semi-aromatic (co)polyamide, they found that: with the composition of the aliphatic dibasic acid used, the compatibility changed complicatedly, and the experimental results were compared with the binary interaction of ElliS. Comparing the action models, it is found that there is a certain deviation between the two

Method used

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  • A kind of preparation method of high temperature resistant low hygroscopicity copolymerized nylon

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: A kind of high-temperature-resistant low-hygroscopicity copolymerized nylon is formed by polycondensation of the following components by weight:

[0022] Monomer A with a mass content of 65% of the copolymerized nylon: caprolactam with a mass content of 50% of the copolymerized nylon and laurolactam with a mass content of 15% of the copolymerized nylon;

[0023] Monomer B: isophorone diamine (IPDA);

[0024] Monomer C: isophthalic acid (IPA);

[0025] Wherein, after the monomer B and the monomer C are condensed according to the molar ratio of 1:1, an intermediate product D is obtained, and the intermediate product D is condensed with the monomer A to obtain the copolymerized nylon, and the mass content of the monomer A in the copolymerized nylon is 65%, and the mass content of the intermediate product D is 35%.

[0026] The preparation method of described copolymerized nylon comprises the steps:

[0027] Salt formation reaction: Under the protection of ...

Embodiment 2

[0029] Embodiment 2: A kind of high-temperature-resistant low-hygroscopicity copolymerized nylon is formed by polycondensation of the following components by weight:

[0030] Monomer A with a mass content of 55% of the copolymerized nylon: caprolactam with a mass content of 30% of the copolymerized nylon and laurolactam with a mass content of 25% of the copolymerized nylon;

[0031] Monomer B: isophorone diamine (IPDA);

[0032] Monomer C: isophthalic acid (IPA);

[0033] Wherein, after the monomer B and the monomer C are condensed according to the molar ratio of 1:1, an intermediate product D is obtained, and the intermediate product D is condensed with the monomer A to obtain the copolymerized nylon, and the mass content of the monomer A in the copolymerized nylon is 55%, the mass content of the intermediate product D is 45%.

[0034] The preparation method of described copolymerized nylon comprises the steps:

[0035] Salt formation reaction: Under the protection of nitr...

Embodiment 3

[0037] Embodiment 3: A kind of high temperature resistant low hygroscopicity copolymerized nylon, is formed by polycondensation of each component of following parts by weight:

[0038] Monomer A with a mass content of 45% of the copolymerized nylon: caprolactam with a mass content of 20% of the copolymerized nylon material and laurolactam with a mass content of 25% of the copolymerized nylon;

[0039] Monomer B: isophorone diamine (IPDA);

[0040] Monomer C: isophthalic acid (IPA);

[0041] Wherein, after the monomer B and the monomer C are condensed according to the molar ratio of 1:1, an intermediate product D is obtained, and the intermediate product D is condensed with the monomer A to obtain the copolymerized nylon, and the mass content of the monomer A in the copolymerized nylon is 45%, the mass content of the intermediate product D is 55%.

[0042] The preparation method of described copolymerized nylon comprises the steps:

[0043] Salt formation reaction: Under the...

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Abstract

The invention provides high temperature resistant copolymer nylon with low hygroscopicity. The copolymer nylon is formed through polycondensation of the following components: a monomer A, monomers B and a monomer C, wherein the monomer A is lactam; the monomers B are aliphatic diamine and / or alicyclic diamine; the monomer C is aromatic binary acid; an intermediate product D is obtained after condensing the monomers B and the monomer C in a mole ratio of 1:1; the copolymer nylon is obtained by condensing the intermediate product D and the monomer A; the mass contents of the monomer A in the copolymer nylon and the intermediate product D are respectively 5-65% and 35-95%. The copolymer nylon material has higher thermal deformation temperature, lower water absorption and better dimensional stability than conventional nylon 6, nylon 66 and nylon 6 / 66, and has high stability under high temperature and humidity conditions.

Description

technical field [0001] The invention relates to the technical field of polyamides, in particular to a preparation method of high-temperature-resistant and low-hygroscopicity copolymerized nylon. Background technique [0002] Polyamide (PA, commonly known as nylon) has excellent mechanical properties, good lubricity and friction resistance, high melting point, stable to chemical reagents (except strong acid and strong alkali), good heat resistance, electrical insulation and weather resistance, etc. , is the engineering plastic with the largest output and widest application in the world. It is widely used in the fields of automobile industry, electrical and electronic industry, transportation industry, machine manufacturing industry, wire and cable communication industry, packaging and daily necessities. However, polyamides also have disadvantages such as low impact strength in dry state or at low temperature, opacity, and poor solubility, which limit their applications. [0...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G69/36
Inventor 高原梁效礼杨冬黄俊辉张海春
Owner 辰东意普万新材料(广东)有限公司