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Polypropylene material for car bumper and preparation method of polypropylene material

A technology for polypropylene materials and automobile bumpers, which is applied in the field of polypropylene materials and its preparation, can solve problems such as poor impact resistance of bumpers, and achieve the effects of enhancing interface compatibility, moderate spacing, and improving impact resistance

Inactive Publication Date: 2016-10-26
HUANGHE S & T COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, the purpose of the present invention is to address the deficiencies in the prior art, to provide a polypropylene material for automobile bumpers and a preparation method thereof, which solves the problem of poor impact resistance of polypropylene automobile bumpers

Method used

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  • Polypropylene material for car bumper and preparation method of polypropylene material

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Embodiment 1

[0023] A polypropylene material for automobile bumper, comprising the following raw materials in parts by weight: 50 parts of isotactic polypropylene, 30 parts of EPDM, 7.5 parts of modified wollastonite powder, 2.5 parts of modified glass fiber, 0.5 part of antioxidant 1010, silane 0.2 parts of coupling agent KH550, 0.1 parts of ultraviolet absorber UV-P and 2 parts of microcrystalline paraffin.

[0024] The length-to-diameter ratio of the modified wollastonite is 15:1, and its preparation method is to add 0.5wt% aluminate coupling agent DL-411D based on the weight of wollastonite powder to wollastonite powder, and then at 125°C Stir with a high-speed mixer for 30 minutes at a speed of 1000r / min, and obtain modified wollastonite powder after cooling;

[0025] The preparation method of the modified glass fiber is to add 1wt% aluminate coupling agent DL-411D based on the weight of the glass fiber to the glass fiber, and then stir it with a high-speed mixer at 125°C for 20min at...

Embodiment 2

[0030] A polypropylene material for an automobile bumper, comprising the following raw materials in parts by weight: 80 parts of isotactic polypropylene, 20 parts of POE, 24 parts of modified wollastonite powder, 6 parts of modified glass fiber, 0.1 part of antioxidant DLTP, 0.6 parts of silane coupling agent KH570, 0.3 parts of ultraviolet absorber UV-9 and 9 parts of magnesium stearate.

[0031] The length-to-diameter ratio of the modified wollastonite is 18:1, and its preparation method is to add 1.5wt% aluminate coupling agent DL-411D based on the weight of wollastonite powder to wollastonite powder, and then Stir with a high-speed mixer for 20 minutes at a speed of 1200r / min, and obtain modified wollastonite powder after cooling;

[0032] The preparation method of the modified glass fiber is to add 2wt% aluminate coupling agent DL-411D based on the weight of the glass fiber to the glass fiber, and then stir with a high-speed stirrer at 135°C for 30min at a speed of 1200r / ...

Embodiment 3

[0037] A polypropylene material for automobile bumper, comprising the following raw materials in parts by weight: 65 parts of isotactic polypropylene, 25 parts of EPDM, 15 parts of modified wollastonite powder, 5 parts of modified glass fiber, 0.3 part of antioxidant 168, 0.4 parts of titanate coupling agent 131, 0.2 parts of ultraviolet absorber UV-531 and 5 parts of microcrystalline paraffin.

[0038] The length-to-diameter ratio of the modified wollastonite is 17:1, and its preparation method is to add 1wt% aluminate coupling agent DL-411D based on the weight of wollastonite powder to wollastonite powder, and then at 130°C Stir with a high-speed mixer for 25 minutes at a speed of 1100r / min, and obtain modified wollastonite powder after cooling;

[0039] The preparation method of the modified glass fiber is to add 1.5wt% aluminate coupling agent DL-411D based on the weight of the glass fiber to the glass fiber, and then stir it with a high-speed mixer at 130°C for 25min at a...

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Abstract

The invention discloses a polypropylene material for a car bumper and a preparation method of the polypropylene material. The polypropylene material for the car bumper is prepared from, by weight, 50-80 parts of isotatic polypropylene, 20-30 parts of a thermoplastic elastomer, 10-30 parts of modified inorganic filler, 0.1-0.5 part of an antioxidant, 0.2-0.6 part of a coupling agent, 0.1-0.3 part of an ultraviolet light absorbent and 2-9 parts of a lubricating agent. According to the polypropylene material for the car bumper and the preparation method of the polypropylene material, wollastonite powder and glass fibers are activated and modified by the aluminic acid ester coupling agent and then coordinate with the lubricating agent in the raw materials to form a winding structure, so that the interface compatibility of a wollastonite powder and glass fiber pre-polypropylene material is greatly enhanced; accordingly, polypropylene particles cannot break away from a base material in the impact process, and the impact resistance of the polypropylene material is improved from the source.

Description

technical field [0001] The invention relates to a polypropylene material and a preparation method thereof, in particular to a polypropylene material for automobile bumpers and a preparation method thereof. Background technique [0002] The car bumper is installed at the front and rear ends of the car. It not only has a decorative function, but more importantly, it is a safety device that can absorb and ease external impact, protect the car body and protect the car body and occupants. Compared with traditional metal bumpers, plastic bumpers can recover when subjected to low-speed collision impact, so plastic bumpers have replaced metal bumpers. Among many plastic bumpers, bumpers made of polypropylene modified materials have been used. Accounting for about 80%, this modified polypropylene bumper has the advantages of low cost, light weight and recyclability, so it is widely used in the automotive field. However, the impact resistance of existing polypropylene automobile bump...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/16C08L23/08C08L91/06C08K13/06C08K9/04C08K7/10C08K7/14C08K5/098
CPCC08K2201/016C08L23/12C08L2205/02C08L2205/025C08L2205/03C08L2207/04C08L2207/10C08L23/16C08L91/06C08K13/06C08K9/04C08K7/10C08K7/14C08L23/0815C08K5/098
Inventor 马志国张保丰李敏陈帮军陈小伟
Owner HUANGHE S & T COLLEGE
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