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A kind of halogen-free flame-retardant cross-linked polypropylene and its preparation method and application

A technology for cross-linking polypropylene and polypropylene, applied in the field of polymer materials, can solve the problems of low smoke performance improvement and other problems, achieve the effects of good fluidity, good flame retardant and heat resistance, and avoid uneven dispersion

Inactive Publication Date: 2017-01-18
广州市海弘塑料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Halogen-free flame-retardant polypropylene is a material that adds halogen-free flame-retardant properties to polypropylene materials. For example, in patent 200910031388.0, two kinds of copolymerized polypropylene are added with phosphate flame retardants to achieve the purpose of flame retardancy, but the material It is necessary to increase the heat resistance strength of the material by adding a heat stabilizer, and the low-smoke performance has not been improved

Method used

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  • A kind of halogen-free flame-retardant cross-linked polypropylene and its preparation method and application
  • A kind of halogen-free flame-retardant cross-linked polypropylene and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Take 50 parts by mass of homopolypropylene (melt flow rate is 17g / 10min), 25 parts of melamine, 0.5 part of crosslinking agent dicumyl peroxide, polymer nano-organic silicon grafted with potassium perfluorosulfonate (purchased from Dongguan Shenghua Plastic Technology Co., Ltd.) 0.2 parts, lubricant N, N-ethylene bisstearamide (EBS) 0.4 parts and antioxidant tetrakis[β-(3,5-di-tert-butyl 4 0.2 parts of -hydroxyphenyl)propionic acid]pentaerythritol ester were mixed evenly, then added to a twin-screw machine, melted and extruded, and granulated to obtain a halogen-free flame-retardant cross-linked polypropylene.

[0032] The conditions for the melt extrusion are: in the temperature control section of the twin-screw machine, the temperature in the first zone is 180-200°C, the temperature in the second zone is 190-210°C, the temperature in the third zone is 200-220°C, and the temperature in the fourth zone is 190°C. ~210°C, the head temperature of the twin-screw machine is ...

Embodiment 2

[0034] Take 37.5 parts by mass of homopolypropylene (melt flow rate is 16g / 10min), 25 parts of melamine, 0.1 part of crosslinking agent dicumyl peroxide, polymer nano-organic silicon grafted with potassium perfluorosulfonate (purchased from Dongguan Shenghua Plastic Technology Co., Ltd.) 0.03 parts, lubricant N, N-ethylene bisstearamide (EBS) 0.8 parts and antioxidant tetrakis[β-(3,5-di-tert-butyl 4 0.4 parts of -hydroxyphenyl) propionic acid] pentaerythritol ester were mixed uniformly, then added to a twin-screw machine, melted and extruded, and granulated to obtain a halogen-free flame-retardant cross-linked polypropylene.

[0035] The conditions for the melt extrusion are: in the temperature control section of the twin-screw machine, the temperature in the first zone is 180-200°C, the temperature in the second zone is 190-210°C, the temperature in the third zone is 200-220°C, and the temperature in the fourth zone is 190°C. ~210℃, the head temperature of the twin-screw mach...

Embodiment 3

[0037] Take 45 parts by mass of homopolypropylene (melt flow rate is 15g / 10min), 25 parts of melamine, 0.6 part of crosslinking agent dicumyl peroxide, polymer nano-organic silicon grafted with potassium perfluorosulfonate (purchased from Dongguan Shenghua Plastic Technology Co., Ltd.) 0.1 part, lubricant N, N-ethylene bisstearamide (EBS) 0.6 part and antioxidant tris(2,4-di-tert-butylphenyl) ) 0.3 parts of the ester were uniformly mixed, then added to a twin-screw machine, melted and extruded, and granulated to obtain a halogen-free flame-retardant cross-linked polypropylene.

[0038] The conditions for the melt extrusion are: in the temperature control section of the twin-screw machine, the temperature in the first zone is 180-200°C, the temperature in the second zone is 190-210°C, the temperature in the third zone is 200-220°C, and the temperature in the fourth zone is 190°C. ~210°C, the head temperature of the twin-screw machine is 210~230°C, the residence time is 3min, an...

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Abstract

The invention belongs to the technical field of high-molecular materials, and discloses halogen-free flame-retardant crosslinked polypropylene as well as a preparation method and application thereof. The halogen-free flame-retardant crosslinked polypropylene is obtained through melt extrusion and granulation by uniformly mixing the following materials in parts by mass: 37.5-50 parts of polypropylene, 25 parts of melamine, 0.1-0.6 part of cross-linking agents, 0.03-0.2 part of nanometer organic silicon, 0.4-0.8 part of lubricating agents and 0.2-0.4 part of antioxidants and then adding the materials to a double-screw extruder. The halogen-free flame-retardant crosslinked polypropylene disclosed by the invention obviously enhances the flame retardance and strength of a material through the addition of the nanometer organic silicon and forms the crosslinked grid through the addition of the cross-linking agents; the obtained material has low-smoke property.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a halogen-free flame-retardant cross-linked polypropylene and its preparation method and application. Background technique [0002] Polypropylene has the characteristics of low production cost, good comprehensive mechanical properties, non-toxic, light weight, corrosion resistance, easy processing and recycling, etc., so it has been widely used, but it is a flammable material, so it is very important to give it flame retardant properties. important and necessary. At present, most of them are halogen-based flame retardants. For example, in patent 201210158873.6, a flame-retardant polypropylene-V0 formula is disclosed, which is mainly achieved by adding decabromodiphenylethane, antimony trioxide and zinc borate. To achieve the effect of flame retardancy. Halogen-containing flame retardant produces large and toxic smoke during the flame retardant process. As ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08K5/3492C08K5/14C08K5/20C08J3/24B29C47/92B29C48/92
CPCB29C48/92B29C2948/92514B29C2948/92561B29C2948/92704C08J3/24C08J2323/12C08L23/12C08L2201/02C08L2201/08C08L2201/22C08L2312/00C08L83/08C08K5/34922C08K5/14C08K5/20
Inventor 黄小泽
Owner 广州市海弘塑料科技有限公司
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