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Nylon added with calcium sulfate whiskers and preparation method of nylon

A technology of calcium sulfate whisker and nylon, applied in the field of nylon production, can solve the problems of limiting the scope of use of nylon, low heat resistance, and large shrinkage rate.

Pending Publication Date: 2021-06-01
常州广威新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as a structural part, nylon has high creep, low heat resistance, large shrinkage, and poor dimensional stability, which limits the scope of use of nylon.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the following will clearly and completely describe the technical solutions in the embodiments of the present invention.

[0018] Take by weight 55 parts of nylon 66, 25 parts of glass fibers, 15 parts of calcium sulfate whiskers, 3 parts of toughening agent, 1 part of coupling agent, 1 part of compatibilizer, and dry for subsequent use; 55 parts of nylon 66, 3 parts of toughening agent, 1 part of coupling agent and 1 part of compatibilizer are mixed and placed in a twin-screw extruder to melt and extrude at 240-260 °C, and glass fiber is added to the side feeding port of the twin-screw extruder 25 parts and 15 parts of calcium sulfate whiskers, granulated to make nylon composite material.

[0019] The temperature of each zone of the extruder is: the temperature of the first zone is 240-250°C, the temperature of the second zone is 250-260°C, the temper...

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PUM

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Abstract

The inveniton relates to nylon added with calcium sulfate whiskers. The nylon is prepared from the following raw materials in parts by weight: 55 parts of nylon 66, 25 parts of glass fibers, 15 parts of calcium sulfate whiskers, 3 parts of a toughening agent, 1 part of a coupling agent and 1 part of a compatilizer. The calcium sulfate with the diameter of 15-20 microns is used for reinforcing the nylon composite material, after reinforcing, the tensile strength and the bending strength of the nylon composite material are improved by 2-3 times, the rigidity is improved by 2-5 times, and the creep value is reduced to 1 / 4 of that of an unreinforced nylon composite material.

Description

technical field [0001] The invention relates to the technical field of nylon production, in particular to nylon added with calcium sulfate whiskers and a preparation method thereof. Background technique [0002] Polyamide is commonly known as nylon (Nylon), English name Polyamide (referred to as PA), density 1.15g / cm, is the general term for thermoplastic resins containing repeated amide groups -[NHCO]- on the main chain of the molecule, including aliphatic PA, aliphatic-aromatic Group PA and aromatic PA. Among them, aliphatic PA has many varieties, large output and wide application, and its naming depends on the specific number of carbon atoms in the synthetic monomer. Nylon, as the largest and most important variety of engineering plastics, has strong vitality, mainly because it achieves high performance after modification, and secondly, the automobile, electrical appliance, communication, electronics, machinery and other industries themselves have more and more high-perf...

Claims

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Application Information

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IPC IPC(8): C08L77/06C08L51/06C08K7/14C08K7/08C08K5/54C08K13/04C08J5/04
CPCC08J5/047C08J5/043C08J2377/06C08J2451/06C08K7/14C08K7/08C08K5/54C08K13/04C08K2201/003
Inventor 李献峰杨祥伟
Owner 常州广威新材料科技有限公司