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Polypropylene composite material with excellent illumination aging resisting performance and preparing method thereof

A technology of aging performance and composite materials, applied in the field of polypropylene composite materials and its preparation, can solve the problems of being susceptible to light aging, achieve good light aging resistance, improve anti-precipitation ability, and low production cost

Inactive Publication Date: 2008-07-02
SHANGHAI PRET COMPOSITES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a polypropylene composite material with excellent light aging resistance, so as to overcome the disadvantage that the existing polypropylene composite material is easy to be subjected to light aging

Method used

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Examples

Experimental program
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Embodiment Construction

[0031] Below in conjunction with embodiment, the present invention is described in further detail:

[0032] In the composite material formulations of Examples and Comparative Examples, polypropylene is high crystalline homopolypropylene and block copolymerized polypropylene with different fluidity, the dosage is 55-95% by weight, and the comonomer of block copolymerized polypropylene is usually ethylene , and its content is in the range of 4 to 10 mol%. The melt flow rate (230°C×2.16kg) of polypropylene is 5-60g / 10min. The crystallinity of high crystalline polypropylene is over 70%, and the isotacticity is over 99%. The particle size range of the talcum powder, calcium carbonate or barium sulfate is 1-10 microns. The toughening agent POE is a linear ethylene-octene copolymer produced by DuPont, with a density of 0.88 to 0.90 g / cm 3 , Melt index is 1~50g / 10min. The molecular sieve activated powder is a 13X molecular sieve activated powder with a pore size larger than 10A (A...

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Abstract

The invention discloses a polypropylene composite material that has excellent light and aging resistant performance and a preparation method thereof. The polypropylene composite material that has excellent light and aging resistant performance consists of raw materials comprising 55 to 95wt percent of polypropylene, 0 to 40wt percent of inorganic filler, 0 to 20wt percent of toughener POE, 0.1 to 5wt percent of molecular sieve activator powder, 0.1 to 1wt percent of main chemical inhibitor, 0.1 to 1wt percent of secondary chemical inhibitor, 0.1 to 2wt percent of light stabilizer agent and 0 to 5.0wt percent of other additives. By adding powder molecular sieve into basic formulation of the polypropylene composite material, the dispersibility of the light stabilizer agent in the polypropylene composite material is effectively improved, thus improving the light and aging resistant performance of the polypropylene composite material.

Description

technical field [0001] The invention relates to a polypropylene composite material with excellent light aging resistance and a preparation method thereof, belonging to the field of polymer modification and processing. Background technique [0002] Polypropylene has been widely used because of its good processing performance and physical, mechanical and chemical properties. It is currently the fastest growing general-purpose thermoplastic. However, the poor light aging resistance of polypropylene composites also affects its application fields. [0003] At present, the light aging resistance of polypropylene composite materials is mainly achieved by adding various light stabilizers and heat aging additives and utilizing the synergistic effect between the two additives. However, compared with polypropylene, a high-molecular-weight polymer, most light-stabilizing additives, including various light-shielding agents, ultraviolet absorbers, and free radical scavengers, are organic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K5/524B29B9/12B29C47/92C08L23/08C08K3/34C08K5/3475B29C48/40B29C48/92
CPCB29C47/92B29C48/92B29C2948/92704B29C48/04B29C48/40B29C2948/92514B29C2948/92561B29C2948/92895
Inventor 张鹰张祥福周文
Owner SHANGHAI PRET COMPOSITES
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