非焦油型双组分聚氨酯防水涂料的研制

通过一定比例合成含有NCO的聚氨酯预聚体为A组分,将粉料、聚醚、MOCA、助剂等制成B组分,将A、B组分按质量比1∶2混合成膜制得非焦油型双组分聚氨酯涂料。探讨了NCO含量、MOCA、催化助剂、消泡剂对双组分聚氨酯涂料的影响,结果表明:NCO含量在4.0%~4.6%、MOCA含量在2.5%~4.0%、催化剂在0.08%~0.12%、消泡剂在0.3%~0.7%,可以制得性能优异的双组分聚氨酯涂料。

Preparation of Non-tar-type Two-component Polyurethane Waterproof Coating

Polyurethane prepolymer with NCO groups was synthesized by proportional mixing as A component, B component was made of powder, polyether, MOCA and additives, and non-tar polyurethane coating was prepared by A, B components according to the mass ratio of 1 ： 2. Influencing factors of two components polyurethane coating that caused by content of NCO, MOCA, catalytic agent, defoaming agent were discussed. The results showed that： high performance two-component polyurethane coating can be prepared when the content of NCO is 4.0%- 4.6%, MOCA content is 2.5% -4.0%, catalyst is 0.08% 0.12% and defoaming agent is 0.3%- 0.7%.