无皂苯丙防锈乳液的合成研究

Study on the Synthesis of Soap-free Styrene-acrylic Anti-rust Emulsion

以苯乙烯(St)、丙烯酸丁酯(BA)为主要单体,甲基丙烯酸(MAA)、甲基丙烯酸缩水甘油酯(GMA)、乙烯基三乙氧基硅烷(A-151)为交联单体合成了无皂苯丙乳液。研究了反应型乳化剂的种类及用量、交联单体的用量对乳液及涂膜性能的影响。确定反应型乳化剂的最佳用量为单体总量的3%。试验发现:当甲基丙烯酸缩水甘油酯与甲基丙烯酸的用量分别为单体总量的3%和3%时,二者可进行交联,能提高苯丙乳液的交联度和致密性。通过加入缓蚀剂PD-star-102,解决了苯丙乳液初期的闪锈问题,同时对涂膜的耐盐水性能有所提高。

With styrene （St）, butyl acrylate （BA） as main monomers, methacrylic acid （MAA）, glycidyl methacrylate （GMA） and vinyltriethoxysilane（A-151） as crosslinking monomers, the soap-free emulsion is synthesized. This paper studies the influence of the type and the amount of reactive emulsifier and the amount of crosslinking monomer on the emulsion and film performance. It is determined that the best amount of the reactive emulsifier is 3% of total amount. Experiments show： when the amount of glycidyl methacrylate monomer and methacrylic acid monomer is respectively 3% and 3% of the total monomer, they can be cross-linked and the crosslinking degree and density of styrene-acrylic emulsion can be improved. By adding corrosion inhibitor PD-star-102, the problem of initial flash rust of styrene-acrylic emulsion can be solved; and at the same time, the property of salt water resistance can be improved.