Isotropic low linear expansion coefficient continuous glass fiber reinforced flame-retardant polypropylene composite material and preparation and application thereof

A low linear expansion, flame retardant polypropylene technology, applied in the field of continuous glass fiber reinforced flame retardant polypropylene composite materials, can solve the problems such as octavinylsilsesquioxane not taught

Active Publication Date: 2021-05-07
中广核俊尔(浙江)新材料有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This patent technology uses octavinylsilsesquioxane as an odor absorber, but does not teach whether octavinylsilsesquioxane has other effects, and whether it will be used in continuous glass fiber reinforced flame retardant polypropylene composites. What effect does it have other than absorbing odors

Method used

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  • Isotropic low linear expansion coefficient continuous glass fiber reinforced flame-retardant polypropylene composite material and preparation and application thereof
  • Isotropic low linear expansion coefficient continuous glass fiber reinforced flame-retardant polypropylene composite material and preparation and application thereof
  • Isotropic low linear expansion coefficient continuous glass fiber reinforced flame-retardant polypropylene composite material and preparation and application thereof

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[0039] Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. The operating methods not indicated in the following examples are generally in accordance with conventional conditions, or in accordance with the conditions suggested by the manufacturer.

[0040] In the following specific embodiments, the sources of raw materials used are shown in Table 1 below.

[0041] Table 1 Source of raw materials

[0042] components Brand and manufacturer Polypropylene MH7900, LG intumescent flame retardant FR-1420, China Coal Science and Technology Group Compatibilizer 9801, Sunrise antioxidant 1010, 168, DSTP, all purchased in the market Tetraacicular ZnO whiskers HB-PZ001, Shanghai New Materials Octavinylsilsesquioxane MS0825, Hybridplastic ...

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Abstract

The invention discloses an isotropic low linear expansion coefficient continuous glass fiber reinforced flame-retardant polypropylene composite material, preparation of the composite material and application of the composite material in preparation of flame-retardant plastic parts on rail transit and new energy automobiles. The composite material is prepared from the following raw materials in parts by mass: 25 to 60 parts of polypropylene, 20 to 40 parts of continuous glass fiber, 0.4 to 1.5 parts of antioxidant, 10 to 35 parts of flame retardant, 5 to 15 parts of inorganic whisker, 1 to 6 parts of compatilizer and 1 to 10 parts of silsesquioxane. The preparation method comprises the following steps: drying the flame retardant, and uniformly mixing with the polypropylene, the compatilizer, the antioxidant and the silsesquioxane; putting the obtained mixture into a co-rotating twin-screw extruder through a feeding port, heating and melting, and feeding inorganic whiskers from the seventh section of the co-rotating twin-screw extruder in a side feeding manner so as to prepare a uniformly mixed melt; and extruding the obtained melt into a dipping mold, fully dipping the melt and continuous glass fibers, and performing traction and water cooling to obtain the composite material.

Description

technical field [0001] The invention relates to the field of continuous glass fiber reinforced flame retardant polypropylene composite material, in particular to a continuous glass fiber reinforced flame retardant polypropylene composite material with isotropic low linear expansion coefficient and its preparation and application. Background technique [0002] The rapid development of new energy vehicles and rail transit has put forward higher requirements on the strength, fire prevention and safety of materials. The continuous glass fiber reinforced polypropylene material maintains a good glass fiber length during the molding process, entangles with each other to form a network structure, so that the part can withstand greater external force, and also has good creep resistance. , electronic appliances, home appliances and other fields have a wide range of applications. However, polypropylene material is extremely flammable, and its limiting oxygen index is only about 17%. A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L83/07C08L51/06C08K13/04C08K7/14C08K7/08C08K5/52C08K3/32C08J5/04
CPCC08J5/043C08J2323/12C08J2483/07C08J2451/06C08K13/04C08K7/14C08K7/08C08K5/52C08K2003/323
Inventor 陈永波陈晓敏郑云磊周琴恩李俊
Owner 中广核俊尔(浙江)新材料有限公司
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