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A kind of polypropylene expanded bead molded body and preparation method thereof

A technology of foaming beads and polypropylene, applied in the polymer field, can solve the problems of increasing process complexity and uncertainty, increasing costs, etc.

Active Publication Date: 2016-05-25
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method requires an additional step of blending, which increases the complexity and uncertainty of the process, and also increases the cost

Method used

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  • A kind of polypropylene expanded bead molded body and preparation method thereof
  • A kind of polypropylene expanded bead molded body and preparation method thereof
  • A kind of polypropylene expanded bead molded body and preparation method thereof

Examples

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Embodiment Construction

[0039] Below in conjunction with embodiment, further illustrate the present invention, but the scope of the present invention is not limited thereto.

[0040] Raw materials and equipment used in the following examples and comparative examples include:

[0041] Ordinary random copolymerized polypropylene: Sinopec Shanghai Petrochemical Company, brand M800E;

[0042] Silica: Tianjin Guangfu Fine Chemical Research Institute, analytically pure;

[0043] Deionized water: Sinopec Beijing Research Institute of Chemical Industry;

[0044] Sodium dodecylbenzenesulfonate: Tianjin Guangfu Fine Chemical Research Institute, analytically pure;

[0045] Kaolin: Bailingwei, ACROS, analytically pure;

[0046] Aluminum sulfate: Tianjin Guangfu Technology Development Co., Ltd., analytically pure;

[0047] Underwater pelletizing system: Labline100, German BKG company;

[0048] Melt tensile testing machine: Rheotens TM 97, Germany Goettfert Company;

[0049] Density tester: CPA225D, density...

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Abstract

The invention provides a polypropylene foaming bead formed body and a preparation method thereof. The preparation method comprises the following steps: mixing polypropylene foaming beads having different foaming rates and prepared by using wide-molecular-weight-distribution high-melt-strength polypropylene as a raw material in proportion, and carrying out thermal molding of the above obtained mixed foaming beads to obtain the foamed body with good surface flatness and tight adhesion. The formed body can be widely applied to the heat insulation tableware field, the automobile interior decorative part field, the finishing material interlayer field, the product damping packaging field and the like. Additionally, the molded body can be recycled, causes no secondary pollution, and accords with circular economy requirements.

Description

technical field [0001] The invention relates to the field of macromolecules, in particular to a polypropylene foamed bead molded body and a preparation method thereof. Background technique [0002] Polypropylene series resins have good heat resistance, mechanical strength, processability, recyclability, etc., so their application fields are becoming more and more extensive. The polypropylene foam molding obtained by in-molding polypropylene-based resin foamed particles maintains the excellent properties of polypropylene resin, and also has cushioning properties, heat insulation, and lightweight properties, so it is widely used In packaging materials, building materials, or impact-absorbing materials for vehicles, etc. [0003] The molded product of expanded polypropylene resin particles prepared by in-mold molding of expanded polypropylene resin particles has better heat resistance, Chemical resistance, toughness, recovery from compression deformation, etc. are more excell...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/16C08J9/14C08F210/16
CPCC08F210/16C08J9/0066C08J9/16C08J2323/14C08L23/14C08L2205/025C08L2205/03C08L2308/00C08L2314/02C08F210/06
Inventor 张师军郭鹏乔金樑吕明福刘有鹏尹华
Owner CHINA PETROLEUM & CHEM CORP
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