压制人造板时真的需要脱模剂吗?
直到几年前,人造木板的生产还主要采用甲醛基树脂粘合剂,如尿素甲醛、苯酚甲醛等。然而,近年来逐渐改用聚合异氰酸酯(pMDI)和其他不含甲醛的粘合剂,由于该类树脂的粘稠度较高,加工过程中就必须采用脱模剂。缺少合适脱模剂的使用,板坯会粘在压板表面导致结垢,在极端情况下板材会粘附在压板或钢板上,带来灾难性的后果。
直到几年前,人造木板的生产还主要采用甲醛基树脂粘合剂,如尿素甲醛、苯酚甲醛等。然而,近年来逐渐改用聚合异氰酸酯(pMDI)和其他不含甲醛的粘合剂,由于该类树脂的粘稠度较高,加工过程中就必须采用脱模剂。缺少合适脱模剂的使用,板坯会粘在压板表面导致结垢,在极端情况下板材会粘附在压板或钢板上,带来灾难性的后果。
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