间苯二酚-甲醛干凝胶结构控制研究  

The Study on Structure Control of Resorcinol-formaldehyde Xerogels

作　　者：徐慧芳[1] 张海礁[2] 陈曰东 

机构地区：[1]哈尔滨工业大学化工学院,黑龙江哈尔滨150001 [2]黑龙江科技学院现代工程制造中心,黑龙江哈尔滨150027 [3]二炮驻哈尔滨地区军事代表室,黑龙江哈尔滨150001

出　　处：《化学与粘合》2011年第6期1-4,共4页Chemistry and Adhesion

基　　金：国家自然科学基金(编号:51003020);哈尔滨工业大学科研创新基金(编号:HRNSF:2009127)

摘　　要：利用溶胶-凝胶及常压干燥法制备了间苯二酚(R)-甲醛(F)干凝胶。通过扫描电子显微镜(SEM)、红外(FTIR)、热重分析(TGA)研究了RF干凝胶的结构与性能,并分析了实验参数对RF的凝胶时间、干凝胶堆积密度的影响。结果表明,通过调控催化剂含量、反应物浓度、pH值可调控RF干凝胶的微观结构。RF干凝胶的堆积密度可在0.299～1.353g/cm3范围内调控,凝胶颗粒尺寸在50nm～3μm之间。Resorcinol-formaldehyde （RF） xerogels were prepared by sol-gel method and subsequent ambient drying. The effects of experimental parameters on the gel time and bulk density were studied in detail. The structure and property of RF xerogels were systematically investigated by SEM, FTIR and TGA. The results indicated that the micro-structures of RF xerogels could be controlled by tuning catalyst, reactant concentration, and initial pH values. The bulk densities of RF xerogels and the sizes of their gel particles were tailored in the range of 0.299-1.353g/cm3 and 50hm-3μm, respectively.

关 键 词：间苯二酚-甲醛 干凝胶 结构控制 

分 类 号：TQ323.1[化学工程—合成树脂塑料工业]