摘要：为了研究制备工艺对蛭石有机化效果的影响以及有机蛭石在催 化领域的应用，以硝酸为酸化剂，氯化钠为钠化剂，十六烷基三甲基溴 化铵为插层剂，采用“酸化-钠化-插层”工艺制备了有机蛭石，并研究 了有机蛭石对高密度聚乙烯基复合材料的催化作用； 探讨了了不同硝 酸、氯化钠浓度和十六烷基三甲基溴化铵用量对有机化效果的影响。有 机蛭石的 XRD 和阳离子交换容量（CEC）测试表 明，采 用 0.1 mol/L 的 硝酸，饱和浓度的氯化钠和 1.5 倍蛭石 CEC 的十六烷基三甲基溴化铵 时，插层效果最佳。 高密度聚乙烯基复合材料的热降解分析测试显示， 有机蛭石对高密度聚乙烯-膨胀型阻燃剂复合材料的交联成炭反应有 催化作用。 

关键词：蛭石；有机插层；催化

Abstract：To study the influence of preparation technics on the intercala tion effect of organic vermiculite and the application of organo-vermiculite as a catalyst， the organic vermiculite was prepared via “acid treatment-Na ion exchange-organic intercalation”process， with HNO₃ as the acid treat ment agent， NaCl as the Na ion exchange agent， hexadecyltrimethylam monium bromide （HDTMA·Br） as the intercalation agent. The catalyst ef fect of organo-vermiculite to high density polyethylene （HDPE）matrix composites was studied too. The intercalation effect due to varied concen tration of acid， Na ion and intercalation agent was discussed. The XRD a nd cation exchange cap acity （CEC） test results of organo-vermiculit e showed that the best intercalation effect was achieved with the concentra tion of 0.1 mol/L HNO₃， saturated NaCl and hexadecyltrimethylammoni um bromide （HDTMA·Br）， the intercalation agent， with the concentra tion of 1.5 times CEC of vermiculite. It was showed by the TG test results of HDPE matrix composites that proper organo-vermiculite could serve as a catalyst which promoted the charring process and cross linking reaction of HDPE/IFR composites.

Keywords：vermiculite； organic intercalation； catalyst