Reinforced toughening anti-aging polypropylene/nano calcium carbonate composite material and its preparation method

A nano-calcium carbonate, strengthening and toughening technology, which is applied in the field of reinforced and toughened anti-aging polypropylene/nano-calcium carbonate composite material and its preparation, and nano-polypropylene resin composite material and its preparation field, which can solve the problem of poor aging resistance and molding Problems such as large shrinkage

Inactive Publication Date: 2007-05-23
哈尔滨鑫达高分子材料股份有限公司
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AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings of ordinary polypropylene resins in terms of strength, toughness, large molding shrinkage, and poor aging resistance, the patent of this invention is comprehensively applied to polypropylene resins with brand-new reinforcement, toughening, anti-aging and nanocomposite technologies. Modification, especially the application of the new anti-aging system, greatly improves the physical and mechanical properties and thermo-oxidative aging properties of the modified material, making the new material superior to the existing ordinary polypropylene in all aspects of performance. resin

Method used

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Embodiment Construction

[0008] The preparation method of the reinforced, toughened and anti-aging polypropylene / nano-calcium carbonate composite material of the present invention, the first step is to process the long glass fiber and nano-calcium carbonate with a composite coupling agent; the second step is to process 100 parts by weight of PP resin 5-40 parts by weight of long glass fiber and nano filler material, 0.2-2 parts by weight of composite antioxidant, and 0.5-5 parts by weight of processing aid are mixed evenly through high-speed stirring; the third step is to feed the above mixture through precise metering The extruder is sent into the twin-screw extruder, and under the conveying and shearing action of the screw, it is fully melted, compounded, extruded through the machine head, drawn, cooled, pelletized, and finally packaged.

[0009] The aspect ratio of the twin-screw extruder used in the preparation method of the present invention is at least 36, the temperature of each section of the s...

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Abstract

The invention discloses a reinforced toughened anti-aging PP / nano-calcium carbonate composite material, consisting of (weight parts) PP resin 100, composite coupling agent 2-30, long glass fibers 2-30, composite toughener 5-40, nano-fillers 5-40, composite antioxidants 0.2-2, and processing aids 0.5-5. This composite material not only retains the original fine performances of polypropylene resin, but also improves markedly the physical and mechanical properties, thermal aging properties by using nanomaterial / new antioxidant synthetic modification technology. This invention also discloses the preparation method for reinforced toughened anti-aging PP / nano-calcium carbonate composite material.

Description

Technical field: [0001] The patent of the invention belongs to the field of polymer composite materials, and relates to a nano-polypropylene resin composite material and its preparation method. The invention increases the application range of polypropylene resin and has good economic and social benefits. Aged polypropylene / nano-calcium carbonate composites and methods for their preparation. Background technique: [0002] Polypropylene resin (PP) is a kind of thermoplastic resin, which is a crystalline polymer with regular structure. It has good heat resistance, electrical insulation, corrosion resistance, low density, easy to obtain raw materials, good comprehensive performance and It is widely used in general plastics, second only to PE in general plastics, and is the fastest growing variety in general plastics. It is currently widely used in automobiles, electronics, toys, military industry, household appliances, machinery, chemicals and other fields; however, pure polymer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/14C08K3/36C08K7/14C08L53/00C08L23/08
Inventor 马庆维赵世强张大伟马俊杰
Owner 哈尔滨鑫达高分子材料股份有限公司
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