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Polyphenylene sulfide composite material as well as preparation method and application thereof

A composite material, polyphenylene sulfide technology, applied in the field of composite materials, can solve problems such as floating fibers, rough surface, warping, etc.

Inactive Publication Date: 2020-04-07
宁波华腾首研新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when too much inorganic filler is used, it is easy to cause the fluidity and mechanical properties of the PPS composite material to be greatly attenuated, and the surface is rough, which cannot meet the requirements of precision injection molding; when the content of glass fiber in the PPS composite material is high, the surface of the product Floating fibers are prone to appear, and at the same time, there will be warping problems, which seriously affect the surface and dimensional stability of the product

Method used

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Examples

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preparation example Construction

[0031] In the present invention, the preparation method of the surface modifier preferably comprises the following steps:

[0032] The coupling agent is mixed with ethanol, sprayed on the surface of the organic silicon powder, dried and crushed to obtain the surface modifier.

[0033]In the present invention, the mass ratio of the coupling agent to ethanol is preferably 4:(0.8~1.2), more preferably 4:1; the effect of the ethanol is to dilute the coupling agent so as to better The coupling agent is dispersed on the surface of the silicone powder. In the present invention, after the spraying, the mixed material obtained is preferably placed in a high-speed mixer for stirring and mixing treatment. The temperature of the stirring and mixing treatment is preferably 30-40° C., more preferably 35° C.; the time for stirring and mixing treatment is preferably 10-20 min, more preferably 15 min; the stirring rate is preferably 100-200 r / min, more preferably 150 r / min.

[0034] In the p...

Embodiment 1

[0063] Preparation of surface modifier: After mixing silane coupling agents KH-550 and KH-560 with absolute ethanol according to the mass ratio of 2:2:1, spray on ultra-high molecular weight silicone powder HY-SP70 (silane coupling The mass ratio of the total mass of the joint agent KH-550 and KH-560 to the ultra-high molecular weight organic silicon powder HY-SP70 is 0.07: 1) on the surface, the resulting mixed material is placed in a high-speed mixer, at 150r / min, 35 Stir at ℃ for 15 minutes, then place the obtained material in an oven to dry at 80℃ for 4 hours, then place the obtained dried material in a high-speed mixer, and stir at 250r / min and 35℃ for 15min to obtain a surface modifier.

[0064]Preparation of surface-active fillers: Mix silane coupling agents KH-550 and KH-560 with absolute ethanol in a mass ratio of 2:2:1, and then spray on ultra-fine soda lime type solid glass microspheres HY-GB2500 ( The mass ratio of the total mass of the silane coupling agent KH-550...

Embodiment 2

[0067] The polyphenylene sulfide composite material was prepared according to the method of Example 1, except that the addition amount of the surface active filler was 8 parts.

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Abstract

The invention provides a polyphenylene sulfide composite material as well as a preparation method and application thereof, and belongs to the technical field of composite materials. The polyphenylenesulfide composite material provided by the invention is prepared from the following preparation raw materials in parts by weight: 100 parts of polyphenylene sulfide resin, 0.2-0.8 parts of an antioxidant, 0.1-2 parts of a blending rheological agent, 0.5-8 parts of a surface modifier, 3-15 parts of a surface active filler, 3-10 parts of a hot melt adhesive, 0.5-2 parts of carbon black and 85-165 parts of glass fibers, wherein the surface modifier is obtained by modifying organic silicon powder with a coupling agent, and the surface active filler is obtained by modifying solid glass microsphereswith a coupling agent. The polyphenylene sulfide composite material provided by the invention can meet the requirements of precise injection molding on stable boundary dimension, smooth surface, no floating fiber, high flowability, easiness in molding and the like.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a polyphenylene sulfide composite material and its preparation method and application. Background technique [0002] With the further development of material science, the application of "replacing steel with plastic" is becoming more and more widespread, especially in the fields of confidential instruments, communication electronics, computers, aerospace and other fields, people's requirements for the precision of plastic products are getting higher and higher. Precision injection molding is mainly used to produce plastic products with good dimensional stability, high precision, and low surface roughness, and is gradually developing towards high speed, ultra-precision, and micro-integration. Therefore, in addition to meeting the conventional physical property requirements, the materials used for precision injection molding must also be easy to form and process and hav...

Claims

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Application Information

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IPC IPC(8): C08L81/02C08L83/04C08L23/08C08L67/00C08K13/06C08K9/06C08K7/14C08K3/04C08K7/20
CPCC08L81/02C08K2201/003C08L2205/035C08L83/04C08L23/0869C08L67/00C08K13/06C08K9/06C08K7/14C08K3/04C08K7/20
Inventor 唐帅曹金波刘峰吕孝腾边策
Owner 宁波华腾首研新材料有限公司
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