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Propene polymer composition and product prepared from same

A technology of propylene polymer and composition, applied in the field of propylene polymer composition, can solve the problems of low density incompatibility, low shrinkage rate, etc., achieve the effect of low shrinkage rate and dimensional stability, and expand the scope of application

Active Publication Date: 2015-04-29
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the incompatibility defects of low shrinkage and low density of products prepared from polypropylene compositions in the prior art, and provide a propylene polymer composition and products prepared therefrom

Method used

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  • Propene polymer composition and product prepared from same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] 70 parts by weight of homopolypropylene, 15 parts by weight of ethylene-butene copolymer, 15 parts by weight of propylene-ethylene-butene terpolymer, 0.01 parts by weight of HPN-68L and HPN20E (HPN-68L and The mass ratio of HPN20E is 1:1), 0.1 weight part of antioxidant 1010 and 0.2 weight part of antioxidant 168 are mixed uniformly in a high mixer, and the mixed material is sent into a twin-screw extruder, adjusted The rotation speed of the screw is 200 rpm, and the temperature of each section is controlled at 180°C, 210°C, 220°C, 200°C and 180°C respectively; the vacuum degree of each section is kept at 0.1MPa; After melting, shearing, dispersing, compressing, degassing and plasticizing in the screw and cylinder, extruding through a die and pelletizing, the propylene polymer composition P1 is obtained.

Embodiment 2

[0047] 64 parts by weight of homopolypropylene, 20 parts by weight of ethylene-butene copolymer, 16 parts by weight of propylene-ethylene-butene terpolymer, 0.01 parts by weight of HPN-68L and HPN20E (HPN-68L and The mass ratio of HPN20E is 1:1), 0.1 weight part of antioxidant 1010 and 0.2 weight part of antioxidant 168 are mixed uniformly in a high mixer, and the mixed material is sent into a twin-screw extruder, adjusted The rotation speed of the screw is 200 rpm, and the temperature of each section is controlled at 180°C, 210°C, 220°C, 200°C and 180°C respectively; the vacuum degree of each section is kept at 0.1MPa; After melting, shearing, dispersing, compressing, degassing and plasticizing in the screw and barrel, extruding through a die and pelletizing, the propylene polymer composition P2 is obtained.

Embodiment 3

[0049] 75 parts by weight of homopolypropylene, 10 parts by weight of ethylene-butene copolymer, 15 parts by weight of propylene-ethylene-butene terpolymer, 0.01 parts by weight of HPN-68L and HPN20E (HPN-68L and The mass ratio of HPN20E is 1:1), 0.1 weight part of antioxidant 1010 and 0.2 weight part of antioxidant 168 are mixed uniformly in a high mixer, and the mixed material is sent into a twin-screw extruder, adjusted The rotation speed of the screw is 200 rpm, and the temperature of each section is controlled at 180°C, 210°C, 220°C, 200°C and 180°C respectively; the vacuum degree of each section is kept at 0.1MPa; After melting, shearing, dispersing, compressing, degassing and plasticizing in the screw and barrel, extruding through a die and pelletizing, the propylene polymer composition P3 is obtained.

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PUM

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Abstract

The invention discloses a propene polymer composition and a product prepared from the same. The propene polymer composition comprises a propene polymer with no butene structural unit, an ethylene-butene copolymer and a propylene-ethylene-butene terpolymer; taking the total weight of the propene polymer composition as reference, the content of the propene polymer with no the butene structural unit is 60-80 percent by weight, the content of the ethylene-butene copolymer is 5-30 percent by weight, and the content of the propylene-ethylene-butene terpolymer is 5-30 percent by weight. A polypropylene material prepared from the propene polymer composition disclosed by the invention has lower contractibility rate and dimensional stability, and maintains the performances of polypropylene such as low density and high strength.

Description

technical field [0001] The present invention relates to a propylene polymer composition and articles made from the propylene polymer composition. Background technique [0002] Polypropylene material has the advantages of low density, good rigidity, flex resistance, chemical corrosion resistance and good insulation, but it also has the defects of poor low temperature impact performance, large molding shrinkage rate and unstable part size. At present, manufacturers of modified plastics at home and abroad mostly use the method of blending and modifying inorganic fillers such as mica powder, talc powder, calcium carbonate, and glass fiber to overcome the problem of large molding shrinkage of polypropylene. [0003] CN1500829A discloses a novel ultra-low shrinkage polypropylene material and its preparation method. The polypropylene material mainly contains 54-57.7 parts by weight of polypropylene, 1-5 parts by weight of polyethylene; 10-20 parts by weight of ethylene glycol Prop...

Claims

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Application Information

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IPC IPC(8): C08L23/10C08L23/12C08L23/16C08L23/08C08L23/14
CPCC08K2201/014C08L23/12C08L2205/03C08L2205/24C08L23/0815C08L23/14C08K5/00C08K5/1575C08K5/1345C08K5/526
Inventor 尚德玲
Owner CHINA PETROLEUM & CHEM CORP
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