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Low-water-absorption PA56T/PET composite material and preparation method thereof

A technology of composite materials and raw materials, applied in the field of bio-based PA56T/PET composite materials, can solve the problems of low regularity of PET macromolecular chains, high rigidity of PET, slow crystallization speed, etc., and achieve good mechanical properties and dimensional stability, Good anti-oxidation performance and low water absorption

Pending Publication Date: 2022-05-13
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PET has high rigidity, poor toughness, and shows a certain brittleness, and low impact performance.
In addition, due to the low regularity of PET macromolecular chains and moderate intermolecular forces, its crystallization speed is slow, and it can only be crystallized above 80 ° C, which limits its use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: A kind of PA56T / PET composite material is prepared from the following components by weight: 65 parts of PA56T, 15 parts of PET, 15 parts of glass fiber, 4 parts of compatibilizer, 0.2 part of antioxidant, lubricating 0.8 part of dose;

[0023] The compatibilizer is POE-g-MAH, the antioxidant is antioxidant 1010, and the lubricant is EBS wax.

Embodiment 2

[0024] Embodiment 2: A kind of PA56T / PET composite material is prepared by comprising the following components by weight: 60 parts of PA56T, 15 parts of PET, 20 parts of glass fiber, 4 parts of compatibilizer, 0.4 part of antioxidant, lubricating 0.6 part of dose;

[0025] The compatibilizer is POE-g-GMA, the antioxidant is antioxidant 300, and the lubricant is silicone powder.

Embodiment 3

[0026] Embodiment 3: A kind of PA56T / PET composite material is prepared from the following components by weight: 60 parts of PA56T, 20 parts of PET, 13 parts of glass fiber, 6 parts of compatibilizer, 0.5 part of antioxidant, lubricating 0.5 part of agent;

[0027] The compatibilizer is a compound of POE-g-MAH and POE-g-GMA, the antioxidant is a compound of antioxidant 1010 and antioxidant 300, and the lubricant is a compound of EBS wax and silicone powder.

[0028] The obtained pellets were dried in a vacuum oven at 50°C for 6 hours, and then injection molded to prepare test specimens and products.

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PUM

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Abstract

The invention discloses a PA56T / PET composite material, and relates to the technical field of engineering. The composite material is prepared from the following raw material components in parts by weight: 15-85 parts of PA56T; 15 to 85 parts of PET (Polyethylene Terephthalate); 2 to 20 parts of a compatilizer; 0.2 to 0.8 part of an antioxidant; 20 to 40 parts of glass fiber; and 0.2 to 1 part of a lubricant. According to the composite material and the preparation method thereof, the raw materials are low in price and environment-friendly, compared with the prior art, the PA56T / PBT alloy prepared from the bio-based PA56T combines the advantages of the PA56T and PET, the tensile strength and modulus are obviously improved, the impact strength is not lower than that of pure PA56T, the water absorption rate of the PA56T is greatly reduced, the dimensional stability of the PA56T is improved, and the composite material is suitable for industrial production. By means of the breakthrough, the alloy can be widely applied to materials of air conditioner parts, power distribution parts, automobile parts and the like, the production process is simple, and the excellent market prospect is achieved.

Description

technical field [0001] The invention is a bio-based PA56T / PET composite material, which belongs to the technical field of polymer materials. Background technique [0002] Bio-based nylon 56 (PA56) is a new type of bio-based polyamide polymerized from bio-based pentamethylenediamine and petroleum-based adipic acid. It is a new type of biomass material independently developed by Shanghai Kaisai Biotechnology Co., Ltd. Bio-based pentamethylenediamine is obtained through microbial fermentation of starch, which reduces production costs and alleviates the pressure of shortage of petroleum resources. It is a very competitive nylon material. [0003] PA56T has a melting point close to PA66, but its water absorption rate and water absorption rate are higher than PA6 and PA66. From a structural point of view, PA56T has only one carbon atom less than PA66, and the density, melting point and mechanical properties of the two are relatively close under dry conditions, so its application ...

Claims

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Application Information

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IPC IPC(8): C08L77/06C08L67/02C08L51/06C08K7/14C08K5/134
CPCC08L77/06C08L2201/08C08L67/02C08L51/06C08K7/14C08K5/1345
Inventor 汪济奎李晓崧
Owner EAST CHINA UNIV OF SCI & TECH
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