Isotropic Low Linear Expansion Coefficient Continuous Glass Fiber Reinforced Flame Retardant Polypropylene Composite and Its Preparation and Application

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 of untaught octavinylsilsesquioxane and other problems, achieve good flame-retardant effect and reduce differences Sexuality, the effect of wide application prospects

Active Publication Date: 2022-07-19
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 and Its Preparation and Application
  • Isotropic Low Linear Expansion Coefficient Continuous Glass Fiber Reinforced Flame Retardant Polypropylene Composite and Its Preparation and Application
  • Isotropic Low Linear Expansion Coefficient Continuous Glass Fiber Reinforced Flame Retardant Polypropylene Composite and Its Preparation and Application

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[0039] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these examples are only used to illustrate the present invention and not to limit the scope of the present invention. In the following examples, the operation methods without specific conditions are usually 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] component Grades and Manufacturers polypropylene MH7900, LG Intumescent flame retardant FR-1420, China Coal Science and Industry Group Compatibilizer 9801, rising of the sun Antioxidant 1010, 168, DSTP, all purchased from the market Four needle-shaped zinc oxide whiskers HB-PZ001, Huben New Materials Octavinylsilsesquioxane ...

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Abstract

The invention discloses a continuous glass fiber reinforced flame retardant polypropylene composite material with isotropic low linear expansion coefficient and its preparation and application in the preparation of flame retardant plastic parts for rail transit and new energy vehicles. In parts by mass, the raw material composition of the composite material includes: 25-60 parts of polypropylene, 20-40 parts of continuous glass fiber, 0.4-1.5 parts of antioxidant, 10-35 parts of flame retardant, and 5-15 parts of inorganic whiskers parts, 1-6 parts of compatibilizer, and 1-10 parts of silsesquioxane. Preparation method: after drying the flame retardant, mix it evenly with polypropylene, compatibilizer, antioxidant and silsesquioxane; put the obtained mixture into a co-rotating twin-screw extruder through a feeding port, and heat it Melt, and simultaneously feed inorganic whiskers from the seventh section of the co-rotating twin-screw extruder in the form of side feeding to obtain a uniformly kneaded melt; extrude the obtained melt into a dipping die, and mix with After the continuous glass fiber is fully impregnated, it is obtained by drawing and water cooling.

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 protection 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 parts can withstand greater external forces, 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, with a limiting oxygen index of only about 17%, ...

Claims

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Application Information

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Patent Type & Authority Patents(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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