酯固化MMT/PF树脂粘结剂的研究  

Study on Ester-Cured Montmorillonite Modified Phenolic Resin Binder

作　　者：徐闫[1] 谭晓明[1] 杜雄[1] 张骏凯[1] 毛革辉[1] 

机构地区：[1]孝感学院化学系,湖北孝感432100

出　　处：《铸造技术》2008年第1期56-58,共3页Foundry Technology

基　　金：湖北省教育厅重大项目(项目编号:2003Z00)

摘　　要：利用有机改性蒙脱土(MMT)制备出了一种新型酯固化酚醛树脂粘结剂;通过砂芯抗拉强度的测定,研究了MMT的用量等因素对粘结强度的影响;采用SEM分析了粘结桥断口的形貌。结果表明,随着MMT用量增加,粘结强度先增大,后减小,与树脂中羟甲基含量的变化趋势是一致的;对断口形貌的分析得出,MMT的加入有效分散了收缩应力。A new kind of ester-cured Phenolic Resin （PF） was prepared utilizing organo-modified Montmorillonite （MMT）. The effect of the MMT content on the bond strength was studied by testing the tensile strength of sanding core. The fracture was analyzed by SEM. The results show that the bond strength increases first, then decreases with increasing the MMT, which is in accordance with the change of content of the hydroxymethyl. The study of the fracture suggests that the addtion of MMT disperses the shrinkage stress effectively.

关 键 词：酯固化 MMT 酚醛树脂 粘结剂 

分 类 号：TG221[金属学及工艺—铸造]