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Production method of one-step method polypropylene foam material

A technology of foaming materials and production methods, applied in the field of automotive decorative materials, can solve the problems of easy deformation, strong hygroscopicity, poor impact resistance, etc., achieve good impact load resistance, increase interface strength, and high heat resistance Effect

Active Publication Date: 2014-01-15
湖北南泽汽车复合材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the decorative materials used in the interior of automobiles mainly include PU sheets, GMT sheets, hemp fiber sheets and other materials. Among these commonly used materials, PU sheets are light in weight, but have high brittleness and poor impact resistance. Fibers are easy to fly and cause pollution. Hemp fiber boards are heavy and hygroscopic, and are prone to mildew and deformation during use. The above-mentioned materials currently in use cannot meet the market demand for the development of the automobile industry.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1: the required raw material formula weight in terms of 10Kg product:

[0030] Polypropylene 4.1Kg, accounting for 41%, polyethylene 1.95Kg, accounting for 19.5%, azodicarbonamide 0.94Kg, accounting for 9.4%, zinc oxide 0.08Kg, accounting for 0.8%, zinc stearate 0.04Kg, accounting for 0.4%, Silicon dioxide 0.3Kg, accounting for 3%, dicumyl peroxide 0.005Kg, accounting for 0.05%, pentaerythritol triacrylate 0.405Kg, accounting for 4.05%, ethylene-vinyl acetate copolymer 0.9Kg, accounting for 9%, а crystal Type nucleating agent 0.03Kg, accounting for 0.3%, maleic anhydride grafted polypropylene 0.9Kg, accounting for 9%, liquid paraffin 0.25Kg, accounting for 2.5%, liquid acetone 0.1Kg, accounting for 1%, the preparation method is as follows: step 1, Put polypropylene, polyethylene, silicon dioxide, ethylene-vinyl acetate vinyl ester copolymer, а crystal nucleating agent, and maleic anhydride grafted polypropylene into a mixer in parts by weight and stir evenly ...

Embodiment 2

[0033] Embodiment 2: the required raw material formula weight in terms of 50Kg product:

[0034] Polypropylene 22.5Kg, accounting for 45%, polyethylene 9Kg, accounting for 18%, azodicarbonamide 4.5Kg, accounting for 9%, zinc oxide 0.3Kg, accounting for 0.6%, zinc stearate 0.15Kg, accounting for 0.3%, two Silicon oxide 1.25Kg, accounting for 2.5%, dicumyl peroxide 0.015Kg, accounting for 0.03%, pentaerythritol triacrylate 1.785Kg, accounting for 3.57%, ethylene-vinyl acetate copolymer 4.5Kg, accounting for 9%, а crystal form Nucleating agent 0.1Kg, accounting for 0.2%, maleic anhydride grafted polypropylene 4Kg, accounting for 8%, liquid paraffin 1.5Kg, accounting for 3%, liquid acetone 0.4Kg, accounting for 0.8%, the preparation method is as follows: step 1, the weight Take polypropylene, polyethylene, silicon dioxide, ethylene-vinyl acetate vinyl ester copolymer, а crystal nucleating agent, and maleic anhydride grafted polypropylene into a mixer and stir evenly to be a mixtur...

Embodiment 3

[0037] Embodiment 3: the required raw material formula weight in terms of 100Kg product:

[0038] Polypropylene 50Kg, accounting for 50%, polyethylene 14Kg, accounting for 14%, azodicarbonamide 7Kg, accounting for 7%, zinc oxide 5Kg, accounting for 5%, zinc stearate 0.2Kg, accounting for 0.2%, silicon dioxide 2Kg , accounting for 2%, dicumyl peroxide 0.04Kg, accounting for 0.04%, pentaerythritol triacrylate 4.91Kg, accounting for 4.91%, ethylene-vinyl acetate copolymer 7Kg, accounting for 7%, а crystal nucleating agent 0.25Kg , accounting for 0.25%, maleic anhydride grafted polypropylene 7Kg, accounting for 7%, liquid paraffin 2Kg, accounting for 2%, liquid acetone 0.6Kg, accounting for 0.6%, the preparation method is as follows: Step 1, take polypropylene, polypropylene Ethylene, silicon dioxide, ethylene-vinyl acetate vinyl ester copolymer, а crystal nucleating agent, and maleic anhydride grafted polypropylene are put into the mixer and stirred evenly to be a mixture for use...

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Abstract

The invention provides a production method of a one-step method polypropylene foam material. The raw materials comprise polypropylene, polyethylene, azodicarbonamide, zinc oxide, zinc stearate, silicon dioxide, dicumyl peroxide, pentaerythritol triacrylate, ethylene-vinyl acetate copolymer, alpha crystal form nucleating agent, maleic anhydride grafted polypropylene, liquid paraffin and liquid acetone. The production method comprises the following steps: 1. mixing polypropylene, polyethylene, silicon dioxide, ethylene-vinyl acetate copolymer, alpha crystal form nucleating agent and maleic anhydride grafted polypropylene together for standby; 2. dissolving dicumyl peroxide in the liquid acetone; 3. mixing pentaerythritol triacrylate, liquid paraffin and the standby material together; 4. mixing the azodicarbonamide, zinc oxide and zinc stearate with the mixture uniformly; 5. extruding and foaming the material through an extruder; 6. compounding non-woven fabric on the two sides of the foam material and rolling to obtain the finished product. The material has high performance for absorbing impact load, good rebound resilience and heat-resisting performance, and can be recycled.

Description

technical field [0001] The invention relates to a decorative material for vehicles, in particular to a production method of a one-step polypropylene foam material. Background technique [0002] At present, the decorative materials used in the interior of automobiles mainly include PU sheets, GMT sheets, hemp fiber sheets and other materials. Among these commonly used materials, PU sheets are light in weight, but have high brittleness and poor impact resistance. Fibers are easy to fly and cause pollution. Hemp fiber boards are heavy and hygroscopic, and are prone to mildew and deformation during use. The above-mentioned materials currently in use cannot meet the market demand for the development of the automobile industry. Contents of the invention [0003] The object of the present invention is to provide a production method of a one-step polypropylene foam material, which has the characteristics of light weight, strong impact resistance and recyclability. [0004] Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/06C08L23/08C08L51/06C08K13/02C08K3/22C08K5/098C08K3/36C08K5/103C08K5/14C08J9/10
CPCB29C48/92B29C2948/92514B29C2948/9258B29C2948/92704C08J9/0061C08J9/103C08J2323/12C08J2423/06C08L23/12C08L2205/035C08L23/06C08L23/0853C08L51/06C08K13/02C08K3/36C08K5/103C08K2003/2296C08K5/098C08K5/14
Inventor 解孝林朱谦周兴平朱帮国
Owner 湖北南泽汽车复合材料有限公司
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