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Processing agent used for polyolefin, and modified polyolefin prepared by utilization of the processing agent

A processing aid, polyolefin elastomer technology, applied in the field of modified polyolefin, can solve the problems of poor toughness, large molding shrinkage, insufficient wear resistance, etc., achieve excellent tensile and bending strength, low cost, excellent The effect of impact toughness and wear resistance

Inactive Publication Date: 2016-03-02
SINOPEC YANGZI PETROCHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the poor toughness, insufficient wear resistance and large molding shrinkage of polypropylene at low temperatures, it is difficult to compete with engineering plastics in many application fields.

Method used

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  • Processing agent used for polyolefin, and modified polyolefin prepared by utilization of the processing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Weigh 15 parts by weight of nano-calcium carbonate, 80 parts of Engage8150, and 5 parts of maleic anhydride grafted polypropylene, mix uniformly in a high-speed mixer, and then granulate through a twin-screw extruder to obtain polyolefin processing. Auxiliary.

[0022] Take 8 parts by weight of polyolefin processing aid, 91.3 parts of polypropylene F401, 0.1 part of antioxidant 1010, 0.1 part of calcium stearate of antioxidant 168, 0.5 part and mix in a high-speed mixer Uniform, granulated by a twin-screw extruder, and after drying, the granules are injection-molded on an injection molding machine to prepare samples to obtain modified polyolefins.

Embodiment 2

[0024] Weigh 20 parts by weight of nano-calcium carbonate, 75 parts of Engage8150, and 5 parts of maleic anhydride grafted polypropylene, mix them uniformly in a high-speed mixer, and granulate through a twin-screw extruder to obtain polyolefin processing Auxiliary.

[0025] Take by weight 8 parts of polyolefin processing aids, 91.3 parts of polypropylene F401, 0.2 parts of antioxidant 1010, 0.1 parts of calcium stearate of antioxidant 168, 0.5 parts and mix in a high-speed mixer Uniform, granulated by a twin-screw extruder, and after drying, the granules are injection-molded on an injection molding machine to prepare samples to obtain modified polyolefins.

Embodiment 3

[0027] Weigh 15 parts by weight of nano-calcium carbonate, 80 parts of Engage8200, and 5 parts of maleic anhydride grafted polypropylene, mix them uniformly in a high-speed mixer, and granulate through a twin-screw extruder to obtain polyolefin processing Auxiliary.

[0028] Take by weight 5 parts of polyolefin processing aids, 94.3 parts of polypropylene F401, 0.1 parts of antioxidant 1010, 0.1 parts of calcium stearate 168, 0.2 parts of calcium stearate and mix in a high-speed mixer Uniform, granulated by a twin-screw extruder, and after drying, the granules are injection-molded on an injection molding machine to prepare samples to obtain modified polyolefins.

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Abstract

The invention relates to a processing agent used for polyolefin, and modified polyolefin prepared by utilization of the processing agent. The processing agent comprises 10-40 wt% of nanometer calcium carbonate, 50-89 wt% of polyolefin elastomer and 1-10 wt% of maleic anhydride grafted polypropylene, with the weight of the processing agent being 100%. The polyolefin elastomer is one selected from vinyl elastomer, polyisobutene or ethylene propylene rubber. The modified polyolefin comprises 100 parts by weight of polyolefin and 1-10 parts by weight of the processing agent. The modified polyolefin is largely improved in impact toughness and is excellent in tensile and bending strength, thus expanding the using range of the polyolefin.

Description

technical field [0001] The invention relates to a processing aid for polyolefin and a modified polyolefin prepared by using the processing aid. The processing aid is beneficial to improving the low-temperature impact resistance and rigidity of the modified polyolefin. Background technique [0002] Polypropylene is one of the fastest-growing general-purpose thermoplastics. Due to its high crystallinity and regular structure, polypropylene has excellent mechanical properties and is widely used in electronics, home appliance shells, and automotive interior and exterior trims. However, due to poor toughness, insufficient wear resistance and large molding shrinkage of polypropylene at low temperatures, it is difficult to compete with engineering plastics in many application fields. Contents of the invention [0003] The object of the present invention is to provide a processing aid for polyolefin, which can make the modified polyolefin obtained by using the processing aid have ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L23/04C08L51/06C08L23/12C08K13/02C08K3/26
Inventor 袁小亮傅勇徐振明
Owner SINOPEC YANGZI PETROCHEM