聚醚多元醇在单组分聚氨酯防水涂料中的应用研究

Application of the Polyether Polyols in One-Component PU Water-Proofing Coatings

采用聚醚二醇YNW-220、聚醚三醇YEP-330N与甲苯二异氰酸酯等原料反应,合成了单组分聚氨酯防水涂料,探讨了YNW-220与YEP-330N配比、NCO含量、催化剂用量等因素对单组分聚氨酯防水涂料贮存稳定性及涂膜力学性能的影响。结果表明,当YNW-220/YEP-330N的质量比为75/25、NCO质量分数为3.0%、催化剂用量在0.1%时,聚氨酯涂料的综合性能最好。

One-component water-proofing polyurethane coatings w e r e prepared b y toluene diisocyanate, poly-ether diol YNW -220 and polyether triol YEP -330N , etc. T h e effects of ratio of YNW -22/Y E P -330N , N C O c o n-tent ,amount of catalyst on m e c hanical properties a n d storage stability w e r e investigated. T h e results s h o w e d that polyurethane coatings had best overall p e r f o r m a n c e w h e n m a s s ratio of YNW -22/YEP -330N w a s 1 5 / 2 5 , m a s s frac-tion of NCO was 3. 0%, and the amount of catalyst w a s 0. 1%.