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Modified polypropylene composite material with high adhesive property as well as preparation method and application thereof

A technology of composite material and polypropylene, which is applied in the field of modified polypropylene composite material with high bonding performance and its preparation, can solve the problems of low tensile strength and rigid elongation at break, and achieve excellent appearance and high bonding strength. and the effect of improved bonding performance, good mechanical properties and surface state

Active Publication Date: 2021-04-30
DONGFENG MOTOR CORP HUBEI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are problems of low tensile strength, rigidity and elongation at break in the manufacture of modified polypropylene materials by simply adding polar substances to the blending method.

Method used

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  • Modified polypropylene composite material with high adhesive property as well as preparation method and application thereof
  • Modified polypropylene composite material with high adhesive property as well as preparation method and application thereof

Examples

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Effect test

Embodiment 1-4 and comparative example 1-2

[0028] A modified polypropylene material with high adhesive performance is provided. The raw material ratios of Examples 1-4 and Comparative Examples 1-2 are shown in Table 1. Unless otherwise specified, parts refer to parts by weight.

[0029] The preparation method of the modified polypropylene material of above-mentioned high bonding performance, comprises the following steps:

[0030] (1) take raw materials by weight ratio;

[0031] (2) Add polypropylene, talcum powder, rubber toughening agent, compatibilizer, antioxidant, coupling agent, lubricant and polar additives into a high-speed mixer and mix evenly at a speed of 500-3000r / min. The time is 5-20 minutes to obtain the mixed material;

[0032] (3) Add the mixed material in step (2) into the twin-screw extruder, and cool and granulate after melting and extrusion; the processing temperature of the twin-screw extruder is set at 100 to 6 zones respectively 120°C, 120~140°C, 140~160°C, 160~180°C, 180~200°C, 180~200°C, the...

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Abstract

The invention discloses a modified polypropylene composite material with high bonding performance as well as a preparation method and application thereof. The modified polypropylene composite material comprises the following components: 40-80 parts of polypropylene, 20-50 parts of talcum powder, 1-10 parts of a rubber flexibilizer, 0.5-1.5 parts of a compatilizer, 0.1-1.5 parts of an antioxidant, 0.1-3 parts of a coupling agent, 0.1-1.5 parts of a lubricant and 0.1-2 parts of a polar additive, wherein the particle size of the talcum powder is 3-15 [mu] m; and the polar additive is diethanol amine with a long carbon chain structure, and the long carbon chain structure is a carbon chain structure with more than 10 carbon atoms. The preparation method comprises the following steps: mixing all the raw materials, carrying out melt extrusion, cooling and granulating. The modified polypropylene material has the advantages of favorable mechanical properties, favorable surface state and excellent bonding effect, and has favorable bonding application effect when being used for plastic back doors.

Description

technical field [0001] The invention belongs to the technical field of polypropylene composite materials, and in particular relates to a modified polypropylene composite material with high bonding performance and its preparation method and application. Background technique [0002] As one of the main raw materials in the automotive industry, plastic materials have the advantages of excellent material properties, good economy and the possibility of large-scale supply. The lightweight of automobiles is also a major theme at present. As cars become lighter and lighter in the future, more and more plastic materials are used in high-strength structural parts. In recent years, more and more cars have adopted plastic front modules and plastic rear doors instead of conventionally used sheet metal welding parts. Polypropylene has always been concerned by the automobile industry and the plastics industry because of its advantages such as low density, high strength, high hardness, wea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/14C08L23/08C08L51/06C08K13/02C08K3/34C08K5/134C08K5/526C08K5/20
CPCC08L23/14C08K2201/003C08L2205/03C08L2205/02C08L23/0815C08L51/06C08K13/02C08K3/34C08K5/1345C08K5/526C08K5/20
Inventor 刘彬黄骏霖
Owner DONGFENG MOTOR CORP HUBEI
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