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Modified polypropylene material and preparation method thereof

A technology of polypropylene material and copolymerized polypropylene, which is applied in the field of modified polypropylene material and its preparation, can solve the problems of poor impact resistance at low temperature and achieve good weather resistance, convenient operation and low cost

Active Publication Date: 2015-12-30
管昌国
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a modified polypropylene material and its preparation method to solve the problem of poor low temperature impact resistance of polypropylene materials

Method used

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  • Modified polypropylene material and preparation method thereof
  • Modified polypropylene material and preparation method thereof
  • Modified polypropylene material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A modified polypropylene material composed of the following mass percentage components: 72% of copolymer polypropylene, 25% of modified elastomer, 1% of antioxidant, 0.5% of oxygen synergist, and 1% of light stabilizer, The light absorber is 0.5%; the copolymerized polypropylene is an ethylene-propylene copolymer, in which the molar percentage of the vinyl group is 5%; the antioxidant is a hindered phenolic antioxidant; the antioxidant synergy The effect agent is antimony trioxide synergistic flame retardant; the light stabilizer is a benzotriazole light stabilizer.

[0027] The modified elastomer is a polyolefin thermoplastic elastomer ethylene-octene copolymer synthesized by using a metallocene catalyst. At a temperature of 230°C, sodium peroxide is used as an initiator, and the silane coupling agent is extruded through reactive extrusion. It is prepared by grafting onto ethylene-octene copolymer. The active group of the silane coupling agent is one of mercapto, amino, ...

Embodiment 2

[0033] A modified polypropylene material consisting of the following components by mass percentage: 98% of copolymer polypropylene, 0.8% of modified elastomer, 0.5% of antioxidant, 0.1% of antioxidant synergist, and 0.5% of light stabilizer , Light absorber 0.15%; The copolymerized polypropylene is an ethylene-propylene copolymer, wherein the molar percentage of the vinyl content is 25%; The antioxidant is a phosphite antioxidant; The antioxidant The oxygen synergist is an antimony trioxide synergistic flame retardant; the light stabilizer is a hindered amine light stabilizer.

[0034] The modified elastomer is a polyolefin thermoplastic elastomer ethylene-octene copolymer synthesized by using a metallocene catalyst. At a temperature of 230°C, calcium peroxide is used as an initiator. Through reactive extrusion, the silane coupling agent It is prepared by grafting onto ethylene-octene copolymer. The active group of the silane coupling agent is one of mercapto, amino, vinyl, epox...

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Abstract

The invention relates to the technical field of high-molecular polymer materials and discloses a modified polypropylene material and a preparation method thereof. The modified polypropylene material is prepared from the following components in percentage by mass: 72-98% of co-polypropylene, 0.8-25% of modified elastomer, 0.5-1% of an antioxidant, 0.1-0.5% of an antioxidant synergist, 0.5-1% of a light stabilizer and 0.1-0.5% of a light absorber. The modified elastomer is prepared by grafting a silane coupling agent on an ethylene-octylene copolymer. The preparation method of the modified polypropylene material comprises the steps of mixing and uniformly stirring the raw materials; extruding the materials by a double-screw extruder after melting the materials; and granulating after cooling and drying to obtain the modified polypropylene material. The polypropylene material prepared by using the preparation method is favorable in weather resistance, the application range of polypropylene is widened greatly, and particularly, the shock resistance of the modified polypropylene material under a low-temperature environment is excellent. The preparation method has the characteristics of simple process, convenience in operation and low cost.

Description

Technical field [0001] The invention relates to the technical field of high molecular polymer materials, in particular to a modified polypropylene material with low-temperature impact resistance and a preparation method thereof. Background technique [0002] Polypropylene material is a kind of thermoplastic resin made by polymerization of propylene. According to the position of the methyl group, it can be divided into three types: isotactic polypropylene, atactic polypropylene and syndiotactic polypropylene. They are white particles or powders. They are non-toxic, odorless and light in weight. They are used in the automotive industry, household appliances, electronics, It is widely used in packaging, building materials and furniture. Polypropylene can be used as auto parts, household appliances, daily necessities, etc. Nowadays, in typical passenger cars, polypropylene plastic parts account for more than 60. In daily life, there are also many polypropylene products, such as tras...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/14C08L23/08C08K5/13C08K3/22C08K5/3475C08K5/524C08K5/17
CPCC08L23/14C08L2201/02C08L2201/08C08L2205/02C08L23/0815C08K5/13C08K3/2279C08K5/3475C08K5/524C08K5/17
Inventor 管昌国
Owner 管昌国