生物基冷芯盒树脂的合成与性能  

Synthesis and Properties of Bio-based Cold Box Resin

作　　者：胡红飞 谢晖[1] 林晓[1] 卢亚俊 张明 Hu Hongfei;Xie Hui;Lin Xiao;Lu Yajun;Zhang Ming(College of Chemical Engineering,Nanjing Technology University)

机构地区：[1]南京工业大学化工学院

出　　处：《特种铸造及有色合金》2022年第5期554-558,共5页Special Casting & Nonferrous Alloys

摘　　要：以苯酚、多聚甲醛、甲醇及松香为原料,醋酸锌为催化剂,采用一步法合成了生物基冷芯盒树脂。通过对产物的折光率、粘度、容纳度、强度等检测,研究了酚醛的摩尔比、反应温度、甲醇添加量、催化剂和松香的用量对产物性能的影响。结果表明,生物基冷芯盒树脂的适宜合成条件:苯酚与多聚甲醛摩尔比为1∶1.6,反应温度为110℃,催化剂用量为0.2%,松香加入量为3%。通过红外光谱、分子质量分布、强度和热重等数据分析,发现添加了生物基冷芯盒树脂的树脂砂的抗拉强度显著提高,在热稳定性、发气量、透气性方面也有适当改善。The bio-based cold box resin was synthesized by a one-step method with rosin,phenol,methanol and paraformaldehyde as raw materials,zinc acetate as a catalyst.The effects of the molar ratio of phenolic aldehyde,the reaction temperature,the amount of catalyst and rosin dosage on the performance of the products were investigated by testing the refractive index,viscosity,accommodation,and intensity of the product.The results indicate that the suitable synthesis conditions for the bio-based cold box resin are presented as follows:the molar ratio of phenol to paraformaldehyde of 1∶1.6,the reaction temperature of 110℃,the amount of catalyst of 0.2%,and the addition of rosin of 3%.Through the analysis of infrared,molecular mass distribution,strength and thermogravimetric data,the tensile strength of resin sand with bio-based cold core box resin addition is significantly increased with a proper improvement in thermal stability,gas evolution and breathability.

关 键 词：生物基 冷芯盒树脂 合成 性能 

分 类 号：TG242[金属学及工艺—铸造]