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Halogen-free and flame-retardant polyethylene powder and preparation method thereof

A technology of flame-retardant polyethylene and polyethylene, which is applied in the field of halogen-free flame-retardant polyethylene powder and its preparation, can solve the problems of poor heat resistance of pure polyethylene materials, easy aging resistance to flame retardancy, and large molding shrinkage , to achieve good halogen-free flame retardant performance, good dispersion and low cost

Inactive Publication Date: 2015-08-19
QINGDAO WANLI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, pure polyethylene materials have defects such as poor heat resistance, large molding shrinkage, easy aging and insufficient flame retardant performance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A halogen-free flame-retardant polyethylene powder, the composition of which is: 74% polyethylene, 15% halogen-free flame retardant, 8% alkali-free glass fiber whose surface has been treated with a silane coupling agent, oil 1% acid amide, 1% hindered amine light stabilizer GW-944Z, 0.8% polyethylene wax, 0.2% mixture of antioxidant 1010 and antioxidant 168 at a mass ratio of 1:1. Wherein, the halogen-free flame retardant is a mixture composed of 50wt% amine polyphosphate, 30wt% melamine polyphosphate and 20wt% nano-montmorillonite.

[0018] The preparation method is as follows: (1) Weigh 50wt% ammonium polyphosphate, 30wt% polyphosphate melamine salt and 20wt% nano-montmorillonite according to the mass percentage, mix them evenly, and then dry them at 80°C to 85°C 30 to 45 minutes, ready for use; (2) Weigh polyethylene, alkali-free glass fiber whose surface has been treated with silane coupling agent, oleic acid amide, hindered amine light stabilizer GW-944Z, poly Put...

Embodiment 2

[0020] A halogen-free flame-retardant polyethylene powder, the components of which are proportioned by mass percentage: 82% polyethylene, 10% halogen-free flame retardant, 5% nano-calcium carbonate whose surface has been treated with a silane coupling agent, erucic acid 0.5% amide, 1% hindered amine light stabilizer GW-944Z, 1% polyethylene wax, 0.5% mixture of antioxidant 1010 and antioxidant 168 at a mass ratio of 1:1. Wherein, the halogen-free flame retardant is a mixture composed of 50wt% amine polyphosphate, 30wt% melamine polyphosphate and 20wt% nano-montmorillonite.

[0021] The preparation method is as follows: (1) Weigh 50wt% polyphosphate amine, 30wt% polyphosphate melamine salt and 20wt% nano-montmorillonite according to the mass percentage, mix them uniformly, and then mix them at 80°C Dry at ~85°C for 30-45 minutes, ready to use; (2) Weigh polyethylene, nano-calcium carbonate, erucamide, hindered amine light stabilizer GW after the surface has been treated with a ...

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PUM

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Abstract

The present invention discloses halogen-free and flame-retardant polyethylene powder and a preparation method thereof, wherein the halogen-free and flame retardant polyethylene powder comprises, by mass, 60-85% of polyethylene, 10-15% of a halogen-free flame-retardant agent, 3-8% of a reinforcing agent, 0.1-1% of a slipping agent, 0.1-1% of an anti-aging agent, 0.1-1% of polyethylene wax, and 0.1-0.5% of an antioxidant, wherein the halogen-free flame-retardant agent is a mixture comprising 50 wt% of poly ammonium phosphate, 30 wt% of a melamine polyphosphate, and 20 wt% of nanometer montmorillonite. The halogen-free and flame-retardant polyethylene powder of the present invention has beneficial effects of good halogen-free flame-retardant property low smoke, no toxicity, environmental protection, excellent mechanical property, good dispersion, low cost, and good appearance good, achieves the UL94-0 flame retardant grade, and can be widely used in the fields of pipes, chemical industry, machinery, packaging, electrical apparatuses, and the like.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a halogen-free flame-retardant polyethylene powder and a preparation method thereof. Background technique [0002] Polyethylene is a light weight, non-toxic, thermoplastic with good electrical insulation properties and chemical corrosion resistance. It has high strength, good cold resistance, and convenient molding and processing. It has been widely used in pipes, wires and cables, Transportation, chemical machinery and other industries. However, pure polyethylene materials have defects such as poor heat resistance, large molding shrinkage, easy aging and insufficient flame retardant performance. Therefore, polyethylene often needs to be modified before it is used to improve its performance and expand its application range. Contents of the invention [0003] The object of the present invention is to provide a halogen-free flame-retardant polyethylene powder with goo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08K13/06C08K9/06C08K7/14C08K3/26C08K3/34C08K3/32C08K5/3492
CPCC08L23/06C08L2201/02C08L2201/22C08L2205/025C08K13/06C08K7/14C08K5/20C08K2003/323C08K3/346C08K5/34922C08K2003/265
Inventor 不公告发明人
Owner QINGDAO WANLI TECH
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