密胺树脂包覆氢氧化镁及其阻燃硅橡胶的研究  

Study on the fire retardant of magnesium hydroxide microencapsulated with melamine-formaldehyde in silicone rubber

作　　者：李又兵[1] 史文[1] 盛旭敏[1] 杨朝龙[1] 夏天[1] 王选伦[1] 曾瑞[1] 

机构地区：[1]重庆理工大学材料科学与工程学院,重庆400054

出　　处：《化工新型材料》2015年第3期181-183,186,共4页New Chemical Materials

基　　金：重庆市巴南区科技计划专项项目(2012Q117)

摘　　要：通过采用原位聚合法以密胺树脂为囊材包覆于Mg(OH)_2表面,形成微胶囊化Mg(OH)_2阻燃剂,将阻燃剂以不同组分添加至硅橡胶中,并与纯硅橡胶试样进行对比测试。通过傅里叶红外测试、氧指数、拉伸、断面扫描对其进行测试,研究发现,傅里叶红外测试得到阻燃剂中含有密胺树脂,氧指数提高27%,随着阻燃剂的加入会使材料的拉伸强度下降,添加40份时断裂伸长率提高49%,对比硅橡胶中添加40份未经过改性的Mg(OH)_2样条,氧指数提高23%,拉伸强度提高16.3%,断裂伸长率提高21%,扫描电镜观察脆断断面可看出经过微胶囊化处理的阻燃剂具有更好的分散性和与基体的相容性。Malamine-formaldehyde as microcapsule was coated on the surface of Mg（OH）2 by in-situ polymerization and formed a new fire retardant called microencapsulation Mg（OH）z. The different component were added in silicone rub ber respectively. The ananlysis were carried out by fourier transform infrared spectrum, extension test, flammability test, and SEM. Compared with pure silicone rubber specimen,there was a 35 % deacrease in the tensile strength and a 49% in crease in the elongation at break when the 40 component fire retardant addition. Oxgen index showed that there was a 27% increase and 23 % compared with pure silicone rubber and specimen with 40 componet common Mg（OH）2 respectively. The good dispersibility and compatibility in bittle surface were observed by SEM.

关 键 词：微胶囊化 氢氧化镁 密胺树脂 阻燃 

分 类 号：TQ333.93[化学工程—橡胶工业]