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Glass fiber reinforced polypropylene composite material and preparation method thereof

A composite material and polypropylene technology, applied in the field of glass fiber reinforced polypropylene composite material and its preparation, can solve the problems of poor mechanical properties of composite materials, inconvenient application, poor film-forming property, etc., achieve good mechanical properties and mechanical properties, and save energy Effect of cost, high mechanical performance

Pending Publication Date: 2021-08-10
SHANDONG FIBERGLASS GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing sizing agent has slow penetration on the surface of glass fiber and poor film-forming property, which leads to poor mechanical properties of the prepared composite material and is not convenient for application.

Method used

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  • Glass fiber reinforced polypropylene composite material and preparation method thereof
  • Glass fiber reinforced polypropylene composite material and preparation method thereof
  • Glass fiber reinforced polypropylene composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A preparation method of glass fiber reinforced polypropylene composite material, the amount of each substance is shown in the data of Example 1 in Table 1, including:

[0036] Firstly, the polypropylene resin, modified glass fiber, antioxidant and compatibilizer are weighed according to the proportion for later use, and then the raw materials are mixed uniformly, placed in a twin-screw extruder for mixing, and then extruded for granulation. Said twin-screw extruder has a screw inlet agent outlet temperature of 200-215°C; a middle section temperature of 225-235°C, and a rotation speed of 240-260rpm. Preferably, the antioxidant is antioxidant 1010; the compatibilizer is ethylene-vinyl acetate copolymer.

[0037] Further, the modified glass fiber is prepared by the following method, wherein the amount of each material of the sizing agent is shown in the data of Example 1 in Table 2:

[0038] Step 1: Dissolve the surfactant in a part of deionized water, then add the silane...

Embodiment 2-8

[0046] The contents of each substance are shown in Table 1 and the data in Examples 2-8 in Table 2 respectively, and the rest of the conditions are the same as in Example 1.

[0047] In order to further illustrate the beneficial effects of the present application, due to limited space, only Example 3 is used as an example to construct a comparative example as follows.

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Abstract

The invention discloses a glass fiber reinforced polypropylene composite material and a preparation method thereof, and belongs to the technical field of high polymer materials. The composite material comprises polypropylene resin, modified glass fibers, an antioxidant and a compatilizer, the surface of the modified glass fiber is coated with an impregnating compound; the impregnating compound is prepared from a silane coupling agents, a bisphenol A type epoxy resin emulsion, a water-borne epoxy resin emulsion, a surfactant, a pH regulator and deionized water, wherein silane coupling agent is a mixture of vinyltriethoxysilane, gamma-glycidyl ether propyl trimethoxysilane and vinyl tri(beta-methoxyethoxy) silane in mass ratio of (1-1.2): 1: 0.4; and the surfactant is a mixture of fatty alcohol polyoxyethylene ether sodium sulfate and nonylphenol polyoxyethylene ether in a mass ratio of 1: (1.1-1.5). According to the invention, the modified glass fiber is added into polypropylene, so that the prepared composite material has higher mechanical properties.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a glass fiber reinforced polypropylene composite material and a preparation method thereof. Background technique [0002] The Ministry of Industry and Information Technology requires that the fuel consumption target of 5L / 100km be achieved by 2020. However, in 2015, about a quarter of enterprises failed to meet the target of that year. At present, automobile manufacturers are under great pressure to save energy and reduce consumption, and automobile lightweight is an important way to achieve energy conservation and consumption reduction. [0003] The lightweight of automobiles is a concern of both consumers and car companies. In order to achieve the goal of lightweight, in addition to optimizing the structure and process design, the selection of materials is also very critical. In order to reduce the weight of cars, car companies use a large number of engineering plast...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K9/06C08K9/04C08K7/14C08J5/08
CPCC08J5/08C08J2323/12C08K7/14C08K9/04C08K9/06C08K9/08
Inventor 崔宝山刘兴月王晓
Owner SHANDONG FIBERGLASS GRP
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