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Halogen-free flame resistant polyolefin compositions

A nano flame retardant and polyolefin technology, applied in the field of flame retardant polyolefin materials, can solve the problems of large amount of addition, poor safety performance, poor mechanical properties of materials, etc., and achieves low smoke density, improved oxygen index, and good safety performance. Effect

Inactive Publication Date: 2004-12-29
四川久远科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the prior art, the flame-retardant polyolefin material is generally a halogenated flame-retardant polyolefin material, which will produce a large amount of toxic gas when burned, which is often the main cause of death when a fire occurs, and has poor safety performance.
There are also literature reports on halogen-free flame-retardant polyolefin materials. For example, the Chinese patent application No. 01126966.9 discloses "Preparation of Halogen-free Flame-Retardant Polyolefin Granules". Magnesium hydroxide, but due to the large amount added, the mechanical properties of the material are poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A kind of halogen-free nano flame-retardant polyolefin composition, by 110 parts of ethylene-vinyl acetate polymer (18-3), 25 parts of nano magnesium hydroxide, 3 parts of zinc borate, dimethyl silicone oil or silicone rubber, and red phosphorus Or the composition of 5 parts of tricresyl phosphate and the weight ratio composition.

[0022] The composition not only has good safety performance, but also has excellent mechanical properties and flame retardancy; the main performance parameters are:

[0023] Tensile strength Mpa GB1040-79 ≥11

[0024] Elongation at break% GB1040-79 ≥620

[0025] Oxygen index% GB2406 ≥30

[0026] Volume resistivity Ω.m ≥2.8×10 13

[0027] Breakdown strength Kv / mm ≥25.1

Embodiment 2

[0029] A kind of halogen-free nano flame-retardant polyolefin composition, according to 50 parts of ethylene-vinyl acetate polymer (14-2), 15 parts of nano magnesium hydroxide, 3 parts of zinc borate, dimethyl silicone oil or silicone rubber, and red phosphorus Or the composition of 5 parts of tricresyl phosphate and the weight ratio composition.

[0030] The composition not only has good safety performance, but also has excellent mechanical properties and flame retardancy; the main performance parameters are:

[0031] Tensile strength Mpa GB1040-79 ≥12

[0032] Elongation at break% GB1040-79 ≥650

[0033] Oxygen index% GB2406 ≥30

[0034] Volume resistivity Ω.m ≥2.9×10 13

[0035] Breakdown strength Kv / mm ≥24.7

Embodiment 3

[0037] A kind of halogen-free nano-flame-retardant polyolefin composition, according to 150 parts of ethylene-vinyl acetate polymer (18-3), 30 parts of nano-magnesium hydroxide, 8 parts of zinc borate, dimethyl silicone oil or silicone rubber, and red phosphorus Or 3 parts of tricresyl phosphate and composition by weight ratio.

[0038] The composition not only has good safety performance, but also has excellent mechanical properties and flame retardancy; the main performance parameters are:

[0039] Tensile strength Mpa GB1040-79 ≥12.1

[0040] Elongation at break% GB1040-79 ≥668

[0041] Oxygen index% GB2406 ≥30

[0042] Volume resistivity Ω.m ≥3.1×10 13

[0043] Breakdown strength Kv / mm ≥26.8

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Abstract

The nano non-halogen fireproof polyolefin composition features the composition of ethylene-vinyl acetate polymer 50-150 weight portions, nano magnesium hydroxide 1-30 weight portions, zinc borate, dimethyl silicon fluid or silicon rubber 1-10 weight portions, and red phosphorus or tricresol phosphate 1-10 weight portions. The fireproof polyolefin composition has excellent fire retarding performance, safety performance and mechanical performance, and produces no toxic gas and less smoke during combustion.

Description

technical field [0001] The invention belongs to a flame-retardant polyolefin material and relates to a halogen-free nano flame-retardant polyolefin composition. Background technique [0002] In the prior art, the flame-retardant polyolefin material is generally a halogen-containing flame-retardant polyolefin material, which will generate a large amount of toxic gas when burned, which is often the main cause of death in a fire, and has poor safety performance. There are also literature reports on halogen-free flame-retardant polyolefin materials. For example, the Chinese patent application No. 01126966.9 discloses "Preparation of Halogen-free flame-retardant polyolefin pellets", which is to add aluminum hydroxide or aluminum hydroxide treated with a surface treatment agent to polyolefin. Magnesium hydroxide, but due to the large amount added, the mechanical properties of the material are poor. Contents of the invention [0003] The purpose of the present invention is to ov...

Claims

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Application Information

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IPC IPC(8): C08K5/521C08L23/08
Inventor 姚程矫庆泽王海涛卢涛李大海
Owner 四川久远科技股份有限公司