氢氧化铝改性丙烯酸酯乳液胶黏剂及阻燃性能研究  

Modification of Acrylate Emulsion Adhesive with Aluminum Hydroxide and Its Flame Retardancy

作　　者：于向东[1,2,3,4,5] 刘娟[1,2,3,4] 陈日清[1,2,3,4,6] 王春鹏[1,2,3,4,6] 卜洪忠[5] 

机构地区：[1]中国林业科学研究院 林产化学工业研究所 [2]生物质化学利用国家工程实验室 [3]国家林业局 林产化学工程重点开放性实验室 [4]江苏省生物质能源与材料重点实验室,江苏南京210042 [5]南京工业大学理学院,江苏南京210009 [6]中国林业科学研究院林业新技术研究所,北京100091

出　　处：《林产化学与工业》2015年第1期57-62,共6页Chemistry and Industry of Forest Products

基　　金：中国林科院林业新技术所基本科研业务费专项资金(CAFINT2011K01)

摘　　要：采用机械共混方式获得Al(OH)3改性丙烯酸酯乳液胶黏剂,研究了分散剂种类及用量、增稠剂用量和Al(OH)3用量对胶黏剂基本性能和流体力学性能的影响。结果表明,在分散剂六偏磷酸钠(SHMP)用量为0.35%、增稠剂羟乙基纤维素(HEC)用量为0.20%和阻燃剂Al(OH)3用量为30%时,改性后丙烯酸酯乳液胶黏剂的性能较好,黏度为1 360 m Pa·s,p H值为5.45,贮存30天后稳定性较好,氧指数达到32;流体力学性能研究表明乳液体系为非牛顿假塑性流体弹性体系。阻燃性能研究表明Al(OH)3改性后丙烯酸酯乳液胶黏剂的热释放速率和烟释放量大大降低,CO生成量降低50%以上,引燃时间由60 s延长至77 s,热释放速率峰值由528 k W/m2降为165 k W/m2,燃烧速率为明显减缓(80 s至110 s),质量损失速率明显降低,有较好的阻燃性。The acrylate emulsion adhesive（ EL） modified with Al（ OH）3was prepared by mechanical mixing method. The effects of the types of polyacrylic acid sodium salt（ DP） and sodium hexametaphosphate（ SHMP）,amounts of the dispersing agents,the amounts of the thickening agent and Al（ OH）3on the basic functions of the acrylate emulsion adhesive and its fluid mechanics performances was studied. The results showed that the acrylate emulsion adhesive had relatively good properties with viscosity of1 360 m Pa·s,p H value of 5. 45,and better storage stability in 30 days. The oxygen index reached 32 under 0. 35% of the dispersing agent SHMP,0. 20 % of the thickening agent hydroxyethyl cellulose（ HEC）,and 30% of the flame retardant Al（ OH）3. The mechanical properties of fluids showed that the acrylate emulsion system was the elastic system of non-Newtonian pseudoplastic fluid. Compared with the acrylate emulsion adhesive,the flame retardant properties showed that the acrylate emulsion adhesive modified with Al（ OH）3had better flame retardant since the smoke and heat release decreased greatly. The reduction of CO generation was more than 50%,and the ignition time reduced.

关 键 词：氢氧化铝 阻燃 丙烯酸酯 乳液 

分 类 号：TQ35[化学工程]