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以聚醚多元醇、异氰酸酯为主要原料经聚合反应,然后加入活化好的触变剂,制备成可立面喷涂施工的垂直型单组分聚氨酯防水涂料。通过聚醚多元醇、环保增塑剂、触变剂以及异氰酸酯指数R值对性能影响的研究,确定了最佳用量。结果表明,当聚醚330 N质量分数为20%~40%、增塑剂质量分数在8%~15%、触变剂质量分数在0.5%~0.6%,R值为2.0~2.4时,所研制的防水涂料物理性能优异、黏度低、抗流挂,可进行喷涂施工,而且具有涂膜密实、无气泡、低温固化快以及优异的贮存稳定性等特点。
To polyether polyol, isocyanate as the main raw material by the polymerization reaction, and then add a good activated thixotropic agent, prepared into a vertical spray coating of the vertical type of one-component polyurethane waterproof coating. Through polyether polyols, environmentally friendly plasticizers, thixotropic agents and isocyanate index R value of the performance study to determine the best dosage. The results showed that when the mass fraction of polyether 330 N was 20% ~ 40%, the mass fraction of plasticizer was 8% ~ 15%, the mass fraction of thixotropic agent was 0.5% ~ 0.6% and the R value was 2.0 ~ 2.4 Developed waterproof coating excellent physical properties, low viscosity, sagging, spraying construction, and has a dense coating, no bubbles, fast curing at low temperature and excellent storage stability and so on.