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Liquid crystalline polymer reinforced polypropylene composite material and preparation method thereof

A liquid crystal polymer and composite material technology, applied in the field of polymer modification and processing, can solve the problems of increased material weight, low material impact performance, poor recycling and other problems, and achieve the effect of improving mechanical and thermal properties

Inactive Publication Date: 2012-07-04
SHANGHAI PRET COMPOSITES
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Chinese patent CN101993563A uses POE toughened polypropylene and inorganic filler talcum powder to adjust the stability and shrinkage of the material, but the impact performance of the material is still low, and adding more toughening agents will reduce the fluidity of the material
Chinese patent CN101633762 uses alkali-free glass fiber to enhance the strength of polypropylene, but the weight of the material will increase significantly, and it is not easy to recycle

Method used

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  • Liquid crystalline polymer reinforced polypropylene composite material and preparation method thereof
  • Liquid crystalline polymer reinforced polypropylene composite material and preparation method thereof
  • Liquid crystalline polymer reinforced polypropylene composite material and preparation method thereof

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Embodiment Construction

[0031] Below in conjunction with embodiment, the present invention is described in further detail:

[0032] In the composite material formulations of the examples and comparative examples, the polypropylene is a homopolypropylene with a melt flow rate of 12 g / 10min (test condition: 230° C.×2.16 kg), and its brand name is M1200HS. POE-MAH is self-made, and maleic anhydride and POE are mixed and grafted in the twin-screw extrusion granulation process. POE is a linear ethylene-octene copolymer produced by DuPont under the trade name Engage 8180. Maleic anhydride grafted PP is also self-made, and maleic anhydride and polypropylene M1200HS are extruded and granulated by twin-screw. The calcium sulfate whiskers were selected as white needle-like calcium sulfate whiskers with an aspect ratio of 200:1. The main antioxidants are DSTP produced by British ICE company, trade name is Negonox DSTP, chemical name is octadecyl thiodipropionate, and 3114 produced by Ciba company, trade name ...

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Abstract

The invention discloses liquid crystalline polymer reinforced polypropylene and a preparation method thereof, belonging to the field of polymer modification and processing. The liquid crystalline polymer reinforced polypropylene is prepared with raw materials by the following weight percentage: 30-60 percent of polypropylene, 10-50 percent of calcium sulfate whisker, 3-20 percent of liquid crystalline polymer, 0-7 percent of maleic anhydride grafted polypropylene, 0-18 percent of maleic anhydride grafted POE (Polyolefin Elastomer), 0.1-3 percent of antioxidants and 0-4 percent of other additives. The liquid crystalline polymer is added based on the fundamental formula of the inorganic filler calcium sulfate whisker filled / reinforced polypropylene composite material, and the filled / reinforced polypropylene composite material with excellent performances is prepared via synergism of the calcium sulfate whisker and the liquid crystalline polymer.

Description

technical field [0001] The invention relates to a polypropylene composite material, in particular to a liquid crystal polymer reinforced polypropylene composite material and a preparation method of the composite material, belonging to the field of polymer modification and processing. Background technique [0002] A car bumper is a safety device that absorbs and buffers external impact forces and protects the front and rear of the body. The plastic bumper has strength, rigidity and decoration. From a safety point of view, it can play a buffering role in the event of a car collision and protect the front and rear car bodies; from the appearance point of view, it can be naturally combined with the car body. It is integrated and has good decorative properties, and has become an important part of decorating the appearance of the car. [0003] Polypropylene is one of the most widely used general-purpose plastics because of its advantages of low density, low price, non-toxicity, c...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L53/00C08L51/06C08L101/12C08K13/04C08K7/08B29C47/92B29C48/92
CPCB29C48/40
Inventor 王力勇陈永东张祥福周文
Owner SHANGHAI PRET COMPOSITES