Flame retardancy effect of surface-modified metal hydroxides on linear low density polyethylene

被引：12

作者：

Kong Xiang-jian ^{[1
]}

Liu Shu-mei ^{[1
,2
]}

Zhao Jian-qing ^{[1
,2
]}

机构：

[1] S China Univ Technol, Coll Mat Sci & Engn, Guangzhou 510640, Guangdong, Peoples R China

[2] S China Univ Technol, Key Lab Polymer Proc Engn Minist Educ, Guangzhou 510640, Guangdong, Peoples R China

来源：

JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY | 2008年 / 15卷 / 06期

基金：

中国国家自然科学基金;

关键词：

metal hydroxides; linear low density polyethylene (LLDPE); synergistic flame retardancy effect; surface-modification;

D O I：

10.1007/s11771-008-0144-2

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Metal hydroxides (MAH) consisting of magnesium hydroxide and aluminum hydroxide with a mass ratio of 1.2 were surface-modified by gamma-diethoxyphosphorous ester propyldiethoxymethylsilane, boric acid and diphenylsilanediol in xylene under dibutyl tin dilaurate catalyst at 140 degrees C. Phosphorus, silicon and boron elements covalently bonded to metal hydroxide particles were detected by X-ray photoelectron spectroscopy. The degradation behavior of the surface-modified MAH was characterized by thermogravimetric analysis. The results show that linear low density polyethylene ( LLDPE) composite, filled with 50% ( mass fraction) of MAH modified by 5.0% ( mass fraction) of modifiers, passes the V-0 rating of UL-94 test and shows the limited oxygen index of 34%, and its heat release rate and average effective heat combustion in a cone calorimeter measurement decrease obviously; The mechanical properties of MAH can be improved by surface-modification. The uniform dispersion of particles and strong interfacial bonding between particles and matrix are obtained.

引用

页码：779 / 785

页数：7

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