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Foamable flame resistance polyethylene composite material and preparation method thereof

A technology of flame-retardant polyethylene and composite materials, applied in the field of foamed flame-retardant polyethylene composite materials and its preparation, can solve the problems of small expansion ratio, high flame retardant addition, high cost, etc., and achieve basic mechanical properties Excellent, simple preparation process, excellent weather resistance

Active Publication Date: 2012-05-30
KINGFA SCI & TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN101429302A discloses selecting one or more mixtures of magnesium hydroxide, aluminum hydroxide, and tin oxide to prepare halogen-free flame-retardant polyethylene, but the addition of flame retardant is as high as 50%, adding nano-auxiliary multi-walled nanotubes can Maintain the flame retardant performance while reducing the amount of flame retardant added, but the cost is higher
Both brominated flame retardants and halogen-free flame retardants themselves do not have foamability, and the addition of flame retardants is relatively large, so the addition of flame retardants greatly limits the foaming behavior, resulting in low foaming ratio and low thermal insulation performance. Not ideal, not suitable for use in the field of insulation materials

Method used

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  • Foamable flame resistance polyethylene composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Weigh 100 parts of low-density polyethylene with a melting index of 4g / 10min, 10 parts of polyvinyl chloride with a melting index of 10g / 10min, 2 parts of chlorinated polyethylene with a mass content of chlorine element of 40%, 10 parts of decabromodiphenylethylene alkane, 5 parts of antimony trioxide, 0.1 part of flame retardant synergist 2,3-dimethyl-2,3-diphenylbutane, 0.5 part of heat stabilizer calcium stearate, 1 part of plasticizer Dibutyl phthalate, 0.5 part of main antioxidant tetrakis [methyl-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester and 0.5 part of auxiliary antioxidant tris(2 , 4-di-tert-butylphenyl) ester, 0.1 part of light stabilizer 2-(2'-hydroxy-3'-tert-butyl-5'-methyl)-5-chlorobenzotriazole and lubricant 0.5 parts of erucamide, after fully mixing by stirring, add the twin-screw extruder whose length-to-diameter ratio L / D is 48:1, and the screw diameter is 42mm, and the feeding speed is 300g / min; the control screw speed is 500...

Embodiment 2

[0041] Weigh 100 parts of low-density polyethylene with a melting index of 10g / 10min, 20 parts of polyvinyl chloride with a melting index of 20g / 10min, 3 parts of chlorinated polyethylene with a mass content of chlorine element of 80%, 10 parts of decabromodiphenyl ether , 5 parts of antimony trioxide, 0.5 parts of flame retardant synergist 2,3-dimethyl-2,3-diphenylbutane, 0.5 parts of heat stabilizer lead stearate, 2 parts of plasticizer phthalate Dibutyl diformate, 0.5 parts of primary antioxidant β-(3,5-di-tert-butyl-4-hydroxyphenyl) octadecyl propionate, 0.5 parts of secondary antioxidant pentaerythritol bisphosphite bis(octadecyl) Alcohol) ester, 1 part of light stabilizer 2-(2'-hydroxyl-3', 5'-di-tert-butylphenyl)-5-chlorobenzotriazole, 1 part of light stabilizer succinic acid and 4 -Polymer of hydroxy-2,2,6,6-tetramethyl-1-piperidinol and 0.5 part of lubricant hexylene bisstearamide are thoroughly mixed by stirring, and the length-to-diameter ratio L / D is added to be 24...

Embodiment 3

[0043] Take by weighing 100 parts of low-density polyethylene with a melting index of 0.5g / 10min, 5 parts of polyvinyl chloride with a melting index of 1g / 10min, 1 part of chlorinated polyethylene with a mass content of chlorine element of 30%, 20 parts of tri(tribromo Phenoxy)triazine, 10 parts of antimony trioxide, 0.3 part of flame retardant synergist 2,3-dimethyl-2,3-diphenylbutane, 0.1 part of heat stabilizer barium stearate, 0.1 Part plasticizer diisooctyl phthalate, 0.1 part primary antioxidant N, N'-bis[β(3,5-di-tert-butyl-4-hydroxyphenyl)propionyl]hydrazine, 0.1 part Secondary antioxidant bis(2,4-di-tert-butylphenyl)pentaerythritol diphosphite, 0.2 parts of light stabilizer 2-(2'-hydroxy-3',5'-di-tert-amylphenyl)benzo Triazole, 0.4 parts of light stabilizer poly{[6-[(1,1,3,3-tetramethylbutyl)amino]]-1,3,5-triazine-2,4-bis[(2 ,2,6,6,-tetramethyl-piperidinyl)imino]-1,6-hexadiene[(2,2,6,6-tetramethyl-4-piperidinyl)imino] } and 0.2 parts of lubricant hexamethylene bisste...

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Abstract

The invention discloses a foamable flame resistance polyethylene composite material and a preparation method thereof. The composite material comprises the following components in parts by weight: 100 parts of LDPE, 5-20 parts of PVC, 1-3 parts of chlorinated polyethylene, 10-20 parts of flame retardant and 5-10 parts of synergetic flame retardant. The invention uses LDPE, PVC, flame retardant, synergetic flame retardant and flame retardant synergist to fit with chlorinated polyethylene subtly, the flame resistance material with high foam multiple can be obtained while the excellent flame resistance is ensured, the material has excellent basic mechanical performance and weather resistance and low cost; in addition, the preparation process is easy, the odor of the product is low; and the material and the method are applicable to the thermal insulation application fields such as refrigeration pipes, air-conditioning insulation pipes, interiors of the building and the like.

Description

technical field [0001] The invention relates to a foamed flame-retardant polyethylene composite material and a preparation method thereof. Background technique [0002] Due to its excellent physical properties and electrical insulation properties, polyethylene is easy to form and process. Its films and pipes are widely used in electronic appliances, food packaging, agriculture and other fields. The polyethylene foam material has the advantages of light weight, heat insulation, sound attenuation, shock resistance, and moisture resistance. Compared with polystyrene insulation materials, it has excellent flexibility, and compared with polyurethane insulation materials, it has excellent cost performance and can be repeated. Recycling, so that it is widely used in building insulation boards and electrical insulation, it is one of the most widely used insulation materials at present. [0003] However, the main structure of polyethylene is a hydrocarbon structure, and the oxygen i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/06C08L27/06C08L23/28C08K13/02C08K5/03C08K3/22C08K5/01C08K5/06C08K5/3492C08K5/3417C08K5/136C08K5/521B29B9/06
Inventor 陆湛泉陶四平姜向新杨泽夏建盟肖鹏
Owner KINGFA SCI & TECH CO LTD
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