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采用纳米聚丙烯酸酯乳液改性纳米Mg(OH)2,通过单螺杆挤出机制备了纳米Mg(OH)2/低密度聚乙烯(LDPE)复合材料,利用红外光谱、扫描电镜、透射电镜等方法对改性前后的Mg(OH)2及Mg(OH)2/LDPE复合材料进行了表征。结果表明:纳米Mg(OH)2表面经纳米聚丙烯酸酯乳液改性后吸附上了一层聚丙烯酸酯;纳米聚丙烯酸酯乳液改性提高了纳米Mg(OH)2的热稳定性,分解温度提高了27℃;改性纳米Mg(OH)2在LDPE基体中分散更为均匀;改性纳米Mg(OH)2的用量为LDPE的15%时复,合材料的拉伸强度比纯LDPE提高了6.5%。
Nanometer Mg (OH) 2 nanoparticles were prepared by nano-emulsion polymerization of polyacrylate. Nanometer Mg (OH) 2 / LDPE composites were prepared by single screw extruder and characterized by FTIR, SEM and TEM Methods The Mg (OH) 2 and Mg (OH) 2 / LDPE composites before and after modification were characterized. The results showed that the surface of nanometer Mg (OH) 2 was modified by nano-polyacrylate emulsion and adsorbed with a layer of polyacrylate. The modification of nanometer polyacrylate emulsion improved the thermal stability of nanometer Mg (OH) 2, the decomposition temperature (OH) 2 was more uniform in LDPE matrix. The amount of modified nano-Mg (OH) 2 was 15% of that of LDPE, and the tensile strength of the composites was higher than pure LDPE 6.5%.