摘要
采用硬脂酸对氢氧化镁进行表面改性处理,分析了改性剂的用量、反应时间、反应温度对改性效果的影响,通过单因素条件改变实验确定最佳改性条件;将改性前后的氢氧化镁分别以4∶6和7∶3的质量比和聚氯乙烯(PVC SG-5)共混,研究其分散性优劣。实验结果表明:改性剂用量8%(相对干粉质量),反应时间40 min,反应温度70℃时改性效果最佳;改性前后的氢氧化镁与PVC的共混材料通过扫描电子显微镜和红外化学成像的方法分析表明改性后的氢氧化镁分散性良好。
The surface of magnesium hydroxide（MH） is modified with stearic acid,and the influence of the dosage of stearic acid,reaction time,and reaction temperature on the effect of modification was also studied.The influence of the different reaction conditions on the modified magnesium hydroxide samples were investigated by the single factor condition experiment.The dispersity of the polymer blend formed by the modified MH,and the non-modified MH,respectively,with PVC at a ratio of 4∶6 and 7∶3,respectively,had been studied.Test results revealed that the best dispersity was achieved at a dosage of modifier equating to 8%（based on the weight of dry powder） at a reaction temperature of 70 ℃ over a reaction time of 40 minutes.The polymer blends formed with the modified MH,the nonmodified MH and PVC were analyzed by SEM and chemical mapping method,attesting to the good dispersity of the modified MH.
出处
《化学试剂》
CAS
CSCD
北大核心
2011年第1期62-64,68,共4页
Chemical Reagents
关键词
硬脂酸
氢氧化镁
表面改性
PVC
化学成像
stearic acid
magnesium hydroxide
surface modification
PVC
chemical mapping
