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Modified polypropylene composite material for pipeline, and preparation method and application of modified polypropylene composite material

A composite material and polypropylene technology, which is applied in the field of modified polypropylene composite materials for pipelines and their preparation, can solve the problems of not being able to have flame retardancy, antistatic and mechanical properties at the same time, and achieve improved toughness, low processing energy consumption, good flame retardant effect

Pending Publication Date: 2020-02-04
GUIZHOU MATERIAL IND TECH INSTITUE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to provide a modified polypropylene composite material for pipelines and its preparation method and application. This material solves the problem that the existing materials cannot have good flame retardancy, antistatic and mechanical properties at the same time, and has high flame retardancy , antistatic properties and high notched impact strength

Method used

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  • Modified polypropylene composite material for pipeline, and preparation method and application of modified polypropylene composite material
  • Modified polypropylene composite material for pipeline, and preparation method and application of modified polypropylene composite material
  • Modified polypropylene composite material for pipeline, and preparation method and application of modified polypropylene composite material

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preparation example Construction

[0050] A preparation method of a modified polypropylene composite material for pipelines, the method comprising:

[0051] Polypropylene, ethylene-vinyl acetate copolymer, EPDM rubber, unsaturated carboxylic acid graft copolymer of polyolefin elastomer, phosphogypsum whiskers, decabromodiphenylethane treated with supercritical carbon dioxide, super Nano antimony trioxide treated with critical carbon dioxide, silane coupling agent, dicumyl peroxide, micro-nano organically modified montmorillonite treated with supercritical carbon dioxide, micro-nano flake graphite treated with supercritical carbon dioxide, 1,1 , 3-three (2-methyl-4-hydroxyl-5-tert-butylphenyl) butane, 2-mercaptobenzimidazole, light stabilizer GW-944 and calcium stearate are mixed uniformly in parts by weight, and The uniformly mixed material is extruded and pelletized by a twin-screw extruder equipped with a micro-nano laminated stretching device, and then cooled, pelletized, dried, and packaged to obtain the pr...

Embodiment 1

[0060] A preparation method for a modified polypropylene composite material for pipelines, comprising:

[0061] 100Kg polypropylene, 1Kg ethylene-vinyl acetate copolymer, 1Kg EPDM rubber, 10Kg polyolefin elastomer unsaturated carboxylic acid graft copolymer, 10Kg supercritical carbon dioxide treated phosphogypsum whiskers, 8Kg supercritical Decabromodiphenylethane treated with carbon dioxide, 2Kg nano antimony trioxide treated with supercritical carbon dioxide, 0.5Kg silane coupling agent, 2Kg dicumyl peroxide, 3Kg micro-nano organic modified montmorillonite treated with supercritical carbon dioxide Soil, 6Kg supercritical carbon dioxide treated micronano flake graphite, 0.5Kg 1,1,3-tris(2-methyl-4-hydroxy-5-tert-butylphenyl)butane, 0.5Kg 2-mercaptobenzo Imidazole, 0.5Kg light stabilizer GW-944, and 0.5Kg calcium stearate are mixed uniformly in a mixer.

[0062] Then, see figure 1 , the uniformly mixed material is extruded and granulated by a twin-screw extruder equipped wit...

Embodiment 2

[0075] A preparation method of a modified polypropylene composite material for pipelines, which is basically the same as the preparation method of Example 1, the difference is that the content of each component is 100Kg polypropylene, 6Kg ethylene-vinyl acetate copolymer, 6Kg EPDM Rubber, 20Kg unsaturated carboxylic acid graft copolymer of polyolefin elastomer, 10Kg supercritical carbon dioxide treated phosphogypsum whiskers, 9Kg supercritical carbon dioxide treated decabromodiphenylethane, 3Kg supercritical carbon dioxide treated nano trioxide Diantimony, 1Kg silane coupling agent, 6Kg dicumyl peroxide, 5Kg micro-nano organic modified montmorillonite treated with supercritical carbon dioxide, 6Kg micro-nano flake graphite treated with supercritical carbon dioxide, 0.6Kg 1,1, 3-tris(2-methyl-4-hydroxy-5-tert-butylphenyl)butane, 0.6Kg 2-mercaptobenzimidazole, 0.6Kg light stabilizer GW-944, 0.5Kg calcium stearate.

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Abstract

The invention discloses a modified polypropylene composite material for a pipeline, and a preparation method and application of the modified polypropylene composite material. The composite material isobtained by extruding and granulating of the following components in parts by weight: polypropylene, an ethylene-vinyl acetate copolymer, ethylene-propylene-diene monomer, an unsaturated carboxylic acid graft copolymer of a polyolefin elastomer, phosphogypsum whiskers treated by supercritical carbon dioxide, decabromodiphenylethane treated by supercritical carbon dioxide, nano antimony trioxide treated by supercritical carbon dioxide, a silane coupling agent, diisopropylbenzene peroxide, micro-nano organic modified montmorillonite treated by supercritical carbon dioxide, micro-nano flake graphite treated by supercritical carbon dioxide, 1,1,3-tris(2-methyl-4-hydroxy-5-tert-butylphenyl)butane, 2-mercaptobenzimidazole, a light stabilizer GW-944 and calcium stearate through a twin-screw extruder additionally provided with a micro-nano laminated stretching device. The modified polypropylene composite material has the advantages of good antistatic performance, excellent flame-retardant performance and high notch impact strength.

Description

technical field [0001] The invention relates to a modified polypropylene composite material, in particular to a modified polypropylene composite material for pipelines, a preparation method and application thereof. Background technique [0002] Power pipes are commonly used in infrastructure construction. They are usually made of modified polyethylene (PE), epoxy resin (EP) or chlorinated polyvinyl chloride (CPVC) resins. However, PE pipes have the disadvantage of low mechanical strength. EP has Poor weather resistance and brittleness, CPVC also has disadvantages such as high price and difficult processing. However, the power pipeline needs to be used in trenchless construction. When it encounters hard and sharp obstacles, it can protect the pipeline from being scratched and cracked, and at the same time ensure the characteristics of antistatic, flame retardant and wear resistance . [0003] Ordinary PP pipes generally lack the effects of flame retardancy and antistatic, a...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/08C08L23/16C08L51/06C08K13/06C08K9/02C08K7/08C08K5/03C08K3/22C08K5/14C08K3/34C08K7/00C08K3/04B29B9/06
CPCB29B9/06C08K2201/011C08L23/12C08L2201/02C08L2201/04C08L2201/08C08L2203/18C08L2205/035C08L23/0853C08L23/16C08L51/06C08K13/06C08K9/02C08K7/08C08K5/03C08K3/2279C08K5/14C08K3/346C08K7/00C08K3/04Y02P20/54
Inventor 徐定红郭建兵秦舒浩周颖何玮頔伍宏明高成涛
Owner GUIZHOU MATERIAL IND TECH INSTITUE
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