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Glass fiber enhanced polypropylene

A polypropylene, reinforced technology, used in the field of organic polymer composite materials, to achieve the effects of not easy to age, high surface finish, small shrinkage range and shrinkage value

Inactive Publication Date: 2012-02-08
SUZHOU IND PARK XINFENGLIN PLASTIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to effectively overcome the defects of existing polypropylene raw materials and provide a glass fiber reinforced polypropylene

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Embodiment 1 provides a glass fiber-reinforced polypropylene, which is composed of the following components by weight: polypropylene: 65%, alkali-free glass fiber: 25%; heat stabilizer: 0.5%, synthetic resin: 1.0%, resistance Combustion agent: 1.0%, light stabilizer: 0.5%, ultraviolet absorber: 0.5%, other additives: 1.5%, activated carbon: 5%.

[0010] First, weigh polypropylene, alkali-free glass fiber, heat stabilizer, synthetic resin, and mix them in a mixer at a low speed, dry them, then make polypropylene into an aqueous solution of about 30%, add them to the reaction kettle, and Slowly add a certain proportion of flame retardant, light stabilizer, ultraviolet absorber and other additives under normal pressure and stirring at 40-50°C. After the reaction is completed, purify and filter with activated carbon to obtain 50% polypropylene saline solution. The salt-forming reaction is an exothermic reaction, so the heat of reaction must be removed by cooling the circul...

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PUM

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Abstract

The invention relates to a glass fiber enhanced polypropylene, comprising components by weight of 55.5-95% of polypropylene, 5-45% of alkali-free glass fiber, 0.1-3.0% of heat stabilizer, 0.1-3.0% of synthetic resin, 0.2-8% of fire retardant, 0.1-2.0% of light stabilizer, 0.1-2.0% of ultraviolet ray absorber, 1.3-5.5% of other auxiliary agent and 3-12% of active carbon. The glass fiber enhanced polypropylene of the present invention has beneficial effects of wear resistance at low temperature, ageing resistance, decomposition resistance during long-term contact with hot metal, small contraction scope and contraction value, contraction cavity resistance, indenture resistance, deformation resistance and high product surface fineness.

Description

technical field [0001] The invention relates to an organic polymer composite material, more specifically, relates to a glass fiber reinforced polypropylene. Background technique [0002] Polypropylene (PP) is a semi-crystalline material. It is harder and has a higher melting point than PE. Because the homopolymer PP temperature is very brittle above 0C, many commercial PP materials are random copolymers with 1 to 4% ethylene or clamp copolymers with higher ethylene content. Polymer PP materials have a low heat distortion temperature (100C), low transparency, low gloss, and low rigidity, but have stronger impact strength. The strength of PP increases with the increase of ethylene content. The Vicat softening temperature of PP is 150C. Due to the high degree of crystallinity, this material has very good surface stiffness and scratch resistance properties. PP does not have environmental stress cracking problems. Usually, PP is modified by adding glass fibers, metal additi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K7/14C08K3/04C08J5/04
Inventor 王志凤
Owner SUZHOU IND PARK XINFENGLIN PLASTIC TECH
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