聚硼硅氧烷的制备及阻燃性能  

Synthesis of Polyborosiloxane and Determination of its Flame Retardant Properties

作　　者：李春连 陈汉清[2] 吕莉[2] 林国良[2] 

机构地区：[1]福建瑞森化工有限公司,福建龙岩364400 [2]厦门大学,福建厦门361005

出　　处：《有机硅材料》2013年第3期162-164,共3页Silicone Material

摘　　要：以二苯基硅二醇、羟基硅油、甲基三乙氧基硅烷和硼酸为原料,制备了不同Si、B量之比的聚硼硅氧烷;并用于透明聚碳酸酯(PC)的阻燃改性。考察了聚硼硅氧烷对PC透光率、氧指数及力学性能的影响。结果表明,添加质量分数为5%的聚硼硅氧烷即可有效提高PC的阻燃性,当聚硼硅烷中Si、B的量之比在3.5∶1左右时,PC的氧指数(LOI)能达到35.5%,比纯PC的氧指数提高9.5个百分点;而对PC的透明性、弯曲强度、冲击强度影响不大,拉伸强度则略有提高。The polyborosiloxanes with various Si/B ratios were synthesized with diphenyl silanediol, hy- droxy silicone oil, methyl triethoxysilane, and boric acid as raw materials. The light transmittance, oxygen in- dex, and mechanical properties of modified polyearbonate （PC） using polyborosiloxane as an additive were in- vestigated. The results showed that the polyborosiloxane with 5 % mass fraction could improve the flame redar- dancy of PC. When the ratio of Si and B in polyborosiloxane was 3.5： 1, LOI of PC could increase to 35.5% , 9.5% higher than that of pure PC. Meanwhile, it could increase tensile strength of PC without sacrificing its transparency, bending strength, and impact strength of PC.

关 键 词：聚碳酸酯 聚硼硅氧烷 阻燃 透明 二苯基硅二醇 羟基硅油 甲基三乙氧基硅烷 硼酸 

分 类 号：TQ324.21[化学工程—合成树脂塑料工业]