Abstract: The unsaturated polyester resin flame retardant materials were prepared taking aluminum hydroxide as fillers. The effect of dosage and particle size of aluminum hydroxide on flame retardant and mechanical property of the unsaturated polyester resin -aluminum hydroxide system was researched. The results show that the flame retardant performance is significantly improved when aluminum hydroxide with mass fraction of more than 40% is added. The limit oxygen index is 34.3% and the vertical burning test reaches the highest level V -0 of flame retardant by adding aluminum hydroxide with mass fraction of 60%. The impact strength of the unsaturated polyester resin-aluminum hydroxide system increases with the increase of aluminum hydroxide dosage. The bending strength of the composite system is the highest when aluminum hydroxide with mass fraction of 40% is added. The particle size of aluminum hydroxide has great influence on flame retardant and mechanical property of the composite system. The bending strength, impact strength and limit oxygen index increase much with the decrease of aluminum hydroxide particle size. The thermal weight loss rate of the composite system is obviously smaller than that of the pure unsaturated polyester resin and the residual carbon amount is obviously improved.

Keywords: aluminum hydroxide; dosage; particle size; unsaturated polyester resin; flame retardant

中图分类号：TQ323.4⁺2        文献标志码：A

文章编号：1008-5548(2014）02-0006-07

DOI:10.13732/j.issn.1008-5548.2014.02.002

收稿日期：2013-12-04， 修回日期：2014-01-07，在线出版时间：2014-05-04。

基金项目：国家“十二五”科技支撑计划项目，编号：2011BAA04B04；四川省非金属复合与功能材料重点实验室开放基金项目，编号：10zxfk37。

第一作者简介：邱天(1987—)，男，硕士研究生，研究方向为新型建筑材料。 E-mail:61139221@qq.com。

通信作者简介：卢忠远(1961—)，男，教授，研究方向为功能材料及先进建筑材料的研究与开发。 E-mail:luy@swust.edu.cn。