目前国外常用的温芯盒法固化剂一般为钝性或潜伏性催化剂，受热时析出强酸而促硬树脂，在硬化过程中仅起催化作用。新研制的固化剂具有双重功能：受热时一方面能催化呋喃树脂快速硬化；另一方面固化剂本身能聚合，对树脂膜粘结桥起一定补强作用，从而可以降低芯砂中树脂用量。用于生产也获得满意结果。 At present, the commonly used warm box method curing agent abroad is usually a blunt or latent catalyst. When it is heated, strong acid is precipitated and the hard resin is hardened, which only plays a catalytic role in the hardening process. The newly developed curing agent has dual functions: on the one hand, it can catalyze the rapid curing of furan resin on the one hand; on the other hand, the curing agent itself can polymerize and bridge the resin film to a certain degree of reinforcing effect, thereby reducing the amount of resin in the core sand. Used for production also get satisfactory results.