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Preparation method of silica fume polypropylene composite material

A composite material and micro-silica fume technology, applied in the field of polypropylene material preparation, can solve the problems of poor impact resistance, low dimensional stability, easy embrittlement, etc., and achieve wide application prospects, simple preparation process, and improved impact strength. Effect

Inactive Publication Date: 2015-05-13
贺灿辉
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  • Abstract
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Problems solved by technology

Its disadvantages are easy embrittlement at low temperature, poor impact resistance, low dimensional stability of products, poor aging resistance and degradation performance, etc.

Method used

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  • Preparation method of silica fume polypropylene composite material

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specific Embodiment

[0010] Specific embodiments: the preparation process of the present invention is: 1. micro silica fume pretreatment: get the original silica fume and calcinate it in a box-type resistance furnace, the calcining condition is 600 ℃, and the calcining time is 4h, so as to improve the whiteness and temperature of micro silica fume SiO 2 Content, by m 硅粉 :m 改性剂 :m 分散剂 =100:5:3 mass ratio mixed with absolute ethanol high-speed dispersion beating 5min, slurry mass fraction is 20%, reacted in 40 ℃ water bath for 1h, the dispersant used is sodium dodecylbenzenesulfonate, The surface modifier is a silane coupling agent Si69; 2. Composite material preparation: the polypropylene and the modified micro-silica powder are mixed with a high-speed multi-functional Put the pulverizer into a steel mold placed on a hot press molding machine after high-speed mixing and paving, heat it to a set temperature of 168°C under a pressure of 4 MPa, then keep it warm and pressurized for 30 minutes, and ...

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Abstract

The invention relates to a preparation method of a silica fume polypropylene composite material, and relates to the field of polypropylene material preparation. Aiming at problems of easy low-temperature embrittlement and poor impact resistance of current polypropylene, the invention provides the silica fume polypropylene composite material with significantly improved mechanical properties. According to the preparation method, silica fume is used as inorganic particles for filling polypropylene; and silica fume is subjected to surface modification with a silane coupling agent Si69. The preparation method comprises the steps of 1, silica fume pretreatment and 2, composite material preparation. The preparation method and process are simple. The mechanical properties of the prepared silica fume polypropylene composite material are significantly improved. The silica fume polypropylene composite material has a good application prospect.

Description

technical field [0001] The invention belongs to the field of polypropylene material preparation. Background technique [0002] Polypropylene (PP) is rich in sources, low in price, easy to form and process, and has excellent product comprehensive performance. It has been widely used in chemical, construction, electric power, automobile, machinery, textile, medical, packaging, building materials, furniture and other industries. Its disadvantages are easy embrittlement at low temperature, poor impact resistance, low dimensional stability of products, poor aging resistance and degradation performance, etc. [0003] SiO in silica fume 2 The mass fraction reaches 85%~97%. It is an amorphous ultrafine powder with an average particle size of 0.1~0.3μm. It is a large amount of highly volatile SiO produced when ferroalloys smelt ferrosilicon and industrial silicon. 2 And Si gas discharge and air rapid oxidation condensation precipitation. As an admixture, it is widely used in the f...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08K9/00C08K9/06C08K3/36
CPCC08K9/00C08K3/36C08K9/06
Inventor 贺灿辉
Owner 贺灿辉
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