Foundry polyurethane binder comprises component Ⅰ, a polyhydroxy component whose main component is benzylic ether phenolic resin, component Ⅱ, a polyisocyanate, and a catalyst.
铸造用的聚氨酯粘合剂主要有两
份
，份Ⅰ为多羟基化合物，如苯醚型酚醛
脂为主要份；
Foundry polyurethane binder comprises component Ⅰ, a polyhydroxy component whose main component is benzylic ether phenolic resin, component Ⅱ, a polyisocyanate, and a catalyst.
铸造用的聚氨酯粘合剂主要有两份，份Ⅰ为多羟基化合物，如苯醚型酚醛脂为主要份；
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