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Vehicle dashboard framework material based on long glass fiber reinforced polypropylene and preparation method thereof and vehicle

A skeleton material, polypropylene technology, used in dashboards, vehicle parts, transportation and packaging, etc., can solve the problems of product odor and mechanical properties decline, interference with the combination of glass fiber and compatibilizer, and high temperature failure of flavors. The technological process and control conditions are simple and environmentally friendly, the odor performance is superior, and the mechanical properties are good.

Inactive Publication Date: 2019-09-27
ZHEJIANG GEELY HLDG GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a certain amount of free maleic anhydride monomer or ungrafted maleic anhydride polymer segments in the production process of the above process, which will induce oxidative polymerization during the extrusion process of glass fiber reinforced polypropylene composites. Propylene chains, thus forming volatile small molecules, resulting in strong odor of glass fiber reinforced polypropylene products, and poor odor performance, which seriously affects its application in automotive interior parts
[0003] In view of the above technical problems, the odor of the product can be improved by directly adding the essence and impregnating the glass fiber, but this production process has the risk of failure of the essence at high temperature or interfering with the combination of the glass fiber and the compatibilizer, resulting in a decrease in the odor and mechanical properties of the product

Method used

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  • Vehicle dashboard framework material based on long glass fiber reinforced polypropylene and preparation method thereof and vehicle
  • Vehicle dashboard framework material based on long glass fiber reinforced polypropylene and preparation method thereof and vehicle
  • Vehicle dashboard framework material based on long glass fiber reinforced polypropylene and preparation method thereof and vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 50 parts by weight of polypropylene resin, 50 parts by weight of long glass fiber reinforced polypropylene and 2.5 parts by weight of essence are evenly blended, added to the feeding port of a single-screw extruder, heated and melted, extruded, cooled, After being blown dry and pelletized, the frame material of the instrument panel of the vehicle is obtained.

[0028] Wherein, the above-mentioned uniform blending process can be realized by adding raw materials into a mixer and mixing them uniformly.

[0029] Wherein, the glass fiber content in the long glass fiber-reinforced polypropylene is 40%, and the working parameters of the single-screw extruder in the above-mentioned feeding, heating and melting and basic processes are shown in the following table:

[0030] Table 1: Working parameters of the single-screw extruder in Example 1:

[0031]

[0032] The relevant performance test results of the products in this example are shown in Table 6.

Embodiment 2

[0034] 40 parts by weight of polypropylene resin, 55 parts by weight of long glass fiber reinforced polypropylene and 3‰ parts by weight of essence are evenly blended, added to the feed port of a single-screw extruder, heated and melted, extruded, cooled, After being blown dry and pelletized, the frame material of the instrument panel of the vehicle is obtained.

[0035] Wherein, the above-mentioned uniform blending process can be realized by adding raw materials into a mixer and mixing them uniformly.

[0036] Wherein, the glass fiber content in the long glass fiber-reinforced polypropylene is 40%, and the working parameters of the single-screw extruder in the above-mentioned feeding, heating and melting and basic processes are shown in the following table:

[0037] Table 2: Working parameters of single-screw extruder in embodiment 2:

[0038]

[0039] The relevant performance test results of the products in this example are shown in Table 6.

Embodiment 3

[0041] 65 parts by weight of polypropylene resin, 45 parts by weight of long glass fiber reinforced polypropylene and 4.3 parts by weight of essence are evenly blended, added to the feeding port of a single-screw extruder, heated and melted, extruded, cooled, After being blown dry and pelletized, the frame material of the instrument panel of the vehicle is obtained.

[0042] Wherein, the above-mentioned uniform blending process can be realized by adding raw materials into a mixer and mixing them uniformly.

[0043] Wherein, the glass fiber content in the long glass fiber-reinforced polypropylene is 20%, and the working parameters of the single-screw extruder in the above-mentioned feeding, heating and melting and basic processes are shown in the following table:

[0044] Table 3: Operating parameters of single-screw extruder in embodiment 3:

[0045]

[0046] The relevant performance test results of the products in this example are shown in Table 6.

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Abstract

The invention relates to the technical field of polymer materials, in particular to a vehicle dashboard framework material based on long glass fiber reinforced polypropylene and a preparation method thereof and a vehicle. The vehicle dashboard framework material based on long glass fiber reinforced polypropylene includes, by weight, 40-65 parts of polyacrylic resin, 40-65 parts of the long glass fiber reinforced polypropylene and 0.3-5 %o part of essence. The preparation method includes the following steps that 40-65 parts of polyacrylic resin, 40-65 parts of the long glass fiber reinforced polypropylene and 0.3-5 %o part of essence are mixed uniformly, added in a feeding hole of a single-screw extruder, molten through heating, extruded, cooled, blow-dried and pelletized to obtain the vehicle dashboard framework material. The vehicle dashboard framework material has no odor, superior performance, sensory comfort and good mechanical performance, the preparation process and the control process are simple and environmentally friendly, and the production cost is low.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a vehicle instrument panel frame material based on long glass fiber reinforced polypropylene, a preparation method thereof and a vehicle. Background technique [0002] Glass fiber reinforced polypropylene is increasingly used in automotive components. Compared with traditional modified polypropylene plastics, glass fiber reinforced polypropylene has better rigidity, impact strength, creep resistance, and dimensional stability, and is more and more widely used in vehicle dashboard frames. The existing mainstream process for producing glass fiber reinforced polypropylene materials uses maleic anhydride as an interfacial compatibilizer, one end of which is linked to the surface of glass fiber, and the other end is fused with polypropylene. This process can significantly improve the composite performance of glass fiber reinforced polypropylene. The bonding force between th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K7/14C08K5/00B60R13/02B60K37/00
CPCB60K37/00B60R13/0256C08K2201/007C08L23/12C08K7/14C08K5/00
Inventor 史一鸣肖晶李卫红孙震李莉娄小宝
Owner ZHEJIANG GEELY HLDG GRP CO LTD
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