PPS with low dielectric coefficient

A low-dielectric, PPS resin technology, applied in the field of plastics, can solve the problems that cannot meet the requirements of parts, high welding temperature, plastic medium can not withstand, etc., achieve excellent high temperature resistance and mechanical properties, strong high temperature resistance, and ensure fineness Effect

Inactive Publication Date: 2019-05-03
江苏欧瑞达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

[0005] Aiming at the deficiencies of the existing technology, the present invention provides a low dielectric coefficient PPS, which solves the problem that the existing plastic medium cannot bear high welding temperature and cannot meet the demand for parts in today's communication development

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment one: represented by parts by weight:

[0027] PPS resin: 45 parts; hollow glass microspheres: 30 parts; low dielectric coefficient glass fiber: 20 parts; PPS toughening agent: 3 parts, the particle diameter of hollow glass microspheres is 40-60 microns, low dielectric coefficient glass The particle diameter of the fibers is 16-18 microns.

[0028] Including the following steps:

[0029] Step 1. Grind the particles of the PPS toughening agent into powder with an abrasive machine, and then sieve it with a high-density sieve, and keep the toughening agent powder under the sieve for later use. The mesh size of the high-density sieve is 100-120 mesh , PPS toughener particles that do not pass through the screen need to be crushed and milled again.

[0030] Step 2. After the materials are processed, add PPS resin, hollow glass microspheres, PPS toughening agent powder and low dielectric coefficient glass fiber to the high-speed mixer in proportion for mixing. The ...

Embodiment 2

[0033] Embodiment two: represent by weight and include:

[0034] PPS resin: 55 parts; hollow glass microspheres: 30 parts; low dielectric coefficient glass fiber: 10 parts; PPS toughening agent: 5 parts, the particle diameter of hollow glass microspheres is 40-60 microns, low dielectric coefficient The particle diameter of the fibers is 16-18 microns.

[0035] Including the following steps:

[0036] Step 1. Grind the particles of the PPS toughening agent into powder with an abrasive machine, and then sieve it with a high-density sieve, and keep the toughening agent powder under the sieve for later use. The mesh size of the high-density sieve is 100-120 mesh , PPS toughener particles that do not pass through the screen need to be crushed and milled again.

[0037] Step 2. After the materials are processed, add PPS resin, hollow glass microspheres, PPS toughening agent powder and low dielectric coefficient glass fiber to the high-speed mixer in proportion for mixing. The mixed...

Embodiment 3

[0040] Embodiment three: represented by weight parts comprises:

[0041] PPS resin: 70 parts; hollow glass microspheres: 35 parts; low dielectric coefficient glass fiber: 30 parts; PPS toughening agent: 2 parts, the particle diameter of hollow glass microspheres is 40-60 microns, low dielectric coefficient glass The particle diameter of the fibers is 16-18 microns.

[0042] Including the following steps:

[0043] Step 1. Grind the particles of the PPS toughening agent into powder with an abrasive machine, and then sieve it with a high-density sieve, and keep the toughening agent powder under the sieve for later use. The mesh size of the high-density sieve is 100-120 mesh , PPS toughener particles that do not pass through the screen need to be crushed and milled again.

[0044]Step 2. After the materials are processed, add PPS resin, hollow glass microspheres, PPS toughening agent powder and low dielectric coefficient glass fiber to the high-speed mixer in proportion for mixi...

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Abstract

The invention discloses PPS with a low dielectric coefficient, and relates to the technical field of plastics. The PPS is prepared by the following steps: particles of a PPS toughening agent are ground into powder by a material grinding machine, then sieving is performed by using a high-density sieve, and sieved toughening agent powder is retained for standby application; after the material is processed, PPS resin, hollow glass microbeads, the PPS toughening agent powder and low-dielectric-coefficient glass fibers are added into a high-speed material-mixing machine in proportion, and mixing isperformed; and after the mixing is completed, the material is taken out and put into a plastic extruding machine, and extrusion molding is performed. The PPS with the low dielectric coefficient provided by the invention has excellent high-temperature resistance and mechanical properties, and shows stable dielectric properties in a wide range from -40 to 120 DEG C; and the PPS is utilized as a substrate, the dielectric coefficient is reduced to less than 3 to meet market demand by means of a modification manner (that is, cooperation of the hollow glass microbeads, the low-dielectric-coefficient glass fibers and the PPS toughening agent is utilized), at the same time, good toughness and strength are maintained, and the high-temperature resistance is strong.

Description

technical field [0001] The invention relates to the technical field of plastics, in particular to a low dielectric coefficient PPS. Background technique [0002] PPS plastic (polyphenylene sulfide) is a thermoplastic special engineering plastic with excellent comprehensive properties. Its outstanding features are high temperature resistance, corrosion resistance and superior mechanical properties. PPS is a sulfur-containing aromatic polymer. Linear PPS becomes a thermosetting plastic after being cross-linked above 350 ° C. PPS with a branched chain structure is a thermoplastic. PPS is a white powder with an average molecular weight of 0.4-0.5 million and a density of 1.3-1.8 grams per cubic centimeter. PPS has excellent thermal properties. After adding glass fiber reinforcement, the thermal performance index is higher. After 5000h heat aging at 232 degrees Celsius, such as glass fiber, carbon fiber, filler, etc. to enhance its mechanical properties, the modified pps can wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L81/02C08K7/28C08K7/14
Inventor 熊军
Owner 江苏欧瑞达新材料科技有限公司
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