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High glaze low shrinkage nano polypropylene modified compound and its preparation method

A low shrinkage, composite technology, applied in the field of polymer materials, can solve the problems of poor dimensional stability, limited application, poor cold resistance, etc.

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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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polypropylene resin has disadvantages such as poor cold resistance, poor dimensional stability, and large molding shrinkage. These deficiencies limit the application of polypropylene resin materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0009] The preparation method of high-gloss and low-shrinkage nano-polypropylene resin of the present invention, the first step first prepares grafted PP+SBS+PP; The second step prepares 100 parts by weight of PP resin, grafted PP+SBS+PP2-30 parts by weight , 5-40 parts by weight of nano filler material, 0.2-2 parts by weight of antioxidant, 0.2-3 parts by weight of light stabilizer, and 0.5-5 parts by weight of processing aid are uniformly mixed through high-speed stirring; in the third step, the above-mentioned mixture is subjected to precision The metered feeder is fed into the twin-screw extruder, under the conveying and shearing action of the screw, it is fully melted, compounded, extruded through the head, drawn, cooled, pelletized, and finally packaged.

[0010] 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 screw is controlled at 190°C-210°C, and the screw speed i...

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PUM

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Abstract

The invention discloses a nano-polypropylene modified resin composite with high gloss and low shrinkage, consisting of (weight parts) PP resins 100, grafted PP-SBS-PP 2-30, nano-filler 5-40, antioxidant 0.2-2, light stabilizer 0.2-3, and processing aids 0.5-5. This composite retains the original fine performance of polypropylene resin, and possesses the good performances of high gloss, low-molding shrinkage, and weathering resistance due to the nanomaterials. The invention also discloses a preparation method for the nano-polypropylene modified resin composite.

Description

Technical field: [0001] The patent of the invention belongs to the technical field of polymer materials, and is a nano-modified plastic material, specifically a high-gloss and low-shrinkage nano-polypropylene modified resin compound. Background technique: [0002] Due to its good comprehensive mechanical properties, good appearance, and non-toxic and harmless to the human body, polypropylene resin materials are occupying an increasing market share in various product fields, especially in the field of automobile manufacturing. protrude. However, polypropylene resin has disadvantages such as poor cold resistance, poor dimensional stability, and large molding shrinkage. These deficiencies limit the application of polypropylene resin materials. [0003] The invention is a nano-modified engineering plastic. Compared with ordinary polypropylene resin, the material has better performance in many aspects such as surface gloss, dimensional stability, chemical activity, and catalysis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/10C08K3/26C08L51/00
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