摩擦材料用线性酚醛树脂的合成工艺研究  

Study on the synthesis process of novolac type phenol-formaldehyde resin based on friction materials

作　　者：蒙礼统[1] 余传柏[1] 韦春[1] 王恒[1] 

机构地区：[1]桂林理工大学有色金属及材料加工新技术教育部重点实验室,材料科学与工程学院,桂林541004

出　　处：《化工新型材料》2014年第8期46-48,51,共4页New Chemical Materials

基　　金：国家自然科学基金(51163003;51203029;51263005);广西自然科学基金(2012GXNSFBA053155)

摘　　要：以苯酚、甲醛为原料,草酸为催化剂,设计合成摩擦材料基体用线性酚醛树脂。通过正交试验和对比试验,考察线性酚醛树脂的数均分子量、玻璃化转变温度、残炭率等性能,获得其最佳合成工艺条件:苯酚与甲醛物质的量比为1:0.9,催化剂用量为(2.0%按苯酚质量计算),反应时间为4h,反应温度为95℃。Novolac type phenol-formaldehyde resin （PF） based on friction materials was synthesized from phenol and form- aldehyde with oxalic acid as catalyst. Through orthogonal experiments and contrast tests, the number average molecular weight, glass transition temperature and residual carbon rate of the PF were studied. The optimum conditions were as followed： the molar ratio of phenol to formaldehyde equal to 1 to 0.9,the amount of catalyst oxalic acid was 2.0% （based on phenol mass）,reaction time was 4h,and reaction temperature was 95℃.

关 键 词：正交试验 对比试验 酚醛树脂 合成 

分 类 号：TQ323.1[化学工程—合成树脂塑料工业]