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Fire retardant composite material of nano-aluminium hydroxide, clay and ethylene-vinyl acetate copolymer

A technology of vinyl acetate copolymerization and nano-aluminum hydroxide, which is applied in the field of flame-retardant composite materials and can solve problems such as toxicity and expensive zinc stannate

Inactive Publication Date: 2006-03-29
BEIJING UNIV OF CHEM TECH +1
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

The zinc stannate used is expensive and toxic

Method used

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Examples

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Embodiment Construction

[0028]The flame-retardant composite material formulas of Examples 1-9 of the present invention and Comparative Examples 1 and 2 are shown in Table 1, and the unit in the table is mass percent. The particle diameter of the nanometer aluminum hydroxide ranges from 80 to 150 nanometers, and the dosage of the titanate coupling agent is 0.5% to modify the surface of the nanometer aluminum hydroxide.

[0029] The properties of the flame-retardant composite materials of Examples 1-6 and Comparative Examples 1 and 2 of the present invention are shown in Table 2.

[0030] By the composition and performance comparison of embodiment 5 in table 1 and table 2 and comparative example 1, do not add maleic anhydride grafted ethylene-vinyl acetate copolymer (maleic anhydride grafted EVA) in comparative example 1, ethylene - vinyl acetate copolymer (EVA) is 44%, and embodiment 5 maleic anhydride grafted EVA is 10%, and EVA is 34%, and all the other components are identical. After adding maleic...

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Abstract

A composite flame-retarding material is proportionally prepared from the surface-modified aluminium hydroxide nanoparticles, organic montmorillonite nanoparticles, zinc borate, ethene-vinyl acetate copolymer, and maleic anhydride grafted ethene-vinyl acetate copolymer. Its advantages are high flame-retarding effect, mechanical performance, flowability and machinability.

Description

technical field [0001] The invention relates to a flame retardant composite material containing an inorganic flame retardant, in particular to a flame retardant composite material with ethylene-vinyl acetate copolymer as a matrix resin and nanometer aluminum hydroxide and clay as main flame retardants. Background technique [0002] Ethylene-vinyl acetate copolymer is a matrix resin for flame retardant materials. It is a kind of halogen-free material, which decomposes water and carbon dioxide when burned, and does not produce obvious smoke and harmful gases. It is not flame-retardant itself, and it needs to be added with halogen-free flame retardants, such as inorganic filling flame retardants, to become practical. Halogen-free flame retardant composite materials. [0003] In "Application of Aluminum Hydroxide Flame Retardants in Polymer Materials" ("China Plastics", No. 6, 1999, pages 80-85), aluminum hydroxide flame retardants are introduced, which have flame retardancy, s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08K3/22
Inventor 郭奋陈建峰张馨桂王国会陈国术
Owner BEIJING UNIV OF CHEM TECH
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