Polypropylene foam material and preparation method thereof

A technology of foaming material and polypropylene, which is applied in the field of polypropylene foaming material and its preparation, can solve problems such as limiting the application range of products and reducing impact performance, and achieve uniform foaming, maintaining impact performance and improving melt strength Effect

Active Publication Date: 2021-03-30
KINGFA SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the impact performance after foaming is greatly reduced, which limits the application range of the product

Method used

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  • Polypropylene foam material and preparation method thereof
  • Polypropylene foam material and preparation method thereof
  • Polypropylene foam material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020]As a polypropylene foamed material according to the embodiment of the present invention, it includes 70 polypropylene resin by weight of the part: 17 parts of toughening agent; 3 parts of low density polyethylene, 10 parts of talc, compativity 0.5 parts, additives and foaming agents; compatible agents are polyolefin grafts, and polyolefin grafts are PP grafted maleic anhydrides, and toughening agents are ethylene-octene copolymers;

[0021]The toughening agent is a vinyl-octene copolymer with a density of 0.864 g / cm.3, Toughening agent at 190 ° C and 2.16 kg of melt mass flow rate is 13 g / 10 min, source: US DOW;

[0022]The auxiliary agent includes 0.2 parts of an antioxidant 1010, 0.2 parts of an antioxidant 168, 0.2 parts of light stabilizer 3808pp5 and 0.2 parts of stearate;

[0023]The polypropylene resin is a copolypropylene resin, a copolymerized polypropylene resin at 230 ° C and 2.16 kg of melt mass flow rate is 103 g / 10 min, and the source: South Korea SK;

[0024]Low densi...

Embodiment 2

[0026]As a polypropylene foam material according to the embodiment of the present invention, the only difference from the first embodiment is: 70 polypropylene resin; 14 parts of toughening agent; 6 parts of low density polyethylene, 10 tonal powder, There are 0.5 parts of compatibilizer, 3 parts of the aid and foaming agent.

Embodiment 3

[0028]As a polypropylene foam material according to the embodiment of the present invention, the only difference from the first embodiment is: 70 polypropylene resins; 11 toughening agents; 9 parts of low density polyethylene, 10 tonal powder, There are 0.5 parts of compatibilizer, 3 parts of the aid and foaming agent.

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Abstract

The invention provides a polypropylene foam material and a preparation method thereof. The polypropylene foam material comprises the following components in parts by weight: 65-90 parts of polypropylene resin; 1-20 parts of toughening agent; 1-20 parts of low-density polyethylene, 5-15 parts of talcum powder, 0.1-1 part of compatilizer, 0.2-2 parts of auxiliaries and a foaming agent. The compatilizer is a polyolefin graft, the polyolefin graft is PP grafted maleic anhydride, POE grafted maleic anhydride or PE grafted maleic anhydride, and the flexibilizer is an ethylene-butylene copolymer or an ethylene-octene copolymer. After the polypropylene foaming material is matched with the polypropylene resin, the low-density polyethylene, the ethylene-butylene copolymer serving as the toughening agent, the ethylene-octene copolymer and the polyolefin graft serving as the compatilizer, the melt strength can be improved, the cell diameter is reduced, foaming is more uniform, the foaming performance of the polypropylene foaming material is improved, and the impact property of the foamed polypropylene foam material can be remarkably improved.

Description

Technical field[0001]The present invention relates to the field of polymer composite materials, and more particularly to a polypropylene foam material and a preparation method thereof.Background technique[0002]Polypropylene (PP) has the advantages of low density, easy processing, and excellent mechanical properties, and has been widely used in automotive industries, home appliances and machinery. For automotive industries, polypropylene is mainly used on automotive interior parts, interior parts such as instrument panels, door panels, columns, etc., exterior parts such as bumpers, fender, guide plates, etc. With energy conservation and emission reduction and car lightweight year-by-year advancement, foaming polypropylene technology is also continuously promoted in the field of auto parts, and polypropylene materials for secondary open-mold foam are being filling by the first generation (20% talcum powder). The transition to the second generation (10% talcum powder) and has begun to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/14C08L23/06C08L51/06C08L23/08C08K13/02C08K3/34C08K5/098C08K5/134C08K5/526C08J9/04
CPCC08J9/04C08J9/0061C08J9/0023C08J9/0038C08J9/0066C08J9/0095C08J2323/14C08J2423/06C08J2451/06C08J2423/08C08K13/02C08K3/34C08K5/098C08K5/1345C08K5/526
Inventor 胡佳旭黄险波叶南飚吴国峰俞飞李伟陈嘉杰
Owner KINGFA SCI & TECH CO LTD
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