杭州昱点防水工程有限公司告诉您水性环氧搬家固化剂的选择 据中国环氧树脂行业协杭州管道清通会专家先容,当用与环氧基反应的固化剂时,环氧值高的环氧搬家充分固化后的有效交联密度大。对侵蚀性介质通过涂膜有强的抵抗作用;环氧值低的环氧树脂则相反,但是过高的交联密度轻易使涂膜发脆,所以在环氧树脂组分中加入了活性稀释剂。活性稀释剂能降低漆料黏度,增加施工时固化剂组分与环氧树脂组分的易混匀性,使固化剂对环氧树脂的乳化功能更轻易施展,而且活性稀释剂本身又能直接介入与固化剂的反应不产生VOC。 水性环氧搬家涂料正在得到越来越广泛的应用,作为搬家涂料主导产品环氧树脂基的搬家涂料的提高前辈品种,它的机能改进一直得到人们的正视,对成膜起重要作用的固化剂的选择研究近又有新成果。
The choice of curing agent on the preparation of waterborne epoxy floor coating is very important. Waterborne epoxy coatings for multiphase system, epoxy resin as the dispersed phase, curing agent for the continuous phase (for water-soluble curing agent). China epoxy resin industry association experts thought that the curing process is controlled by diffusion, curing reaction in the first place in the interface, the viscosity of epoxy particle surface increases gradually, at the same time curing agent gradually spread to the epoxy resin, to further make the epoxy resin curing. Curing epoxy emulsion particle size is smaller, the closer the completely; Curing agent has better compatibility with epoxy resin, curing agent, the more easily spread to epoxy resin, curing. Commonly used water curing agent have fatty amine adduct, alicyclic amine adduct, polyamide, polyamide adduct, etc. Aliphatic amine adduct and alicyclic amine adduct share period is short, fast curing rate, particle surface viscosity of epoxy rise too fast. Go against to epoxy curing agent particle diffusion depth, curing incomplete, film function is not ideal. Bad component mixing soluble polyamide curing agent with epoxy resin and induction period, with polyamide resin adduct can overcome this shortcoming. As the system of collecting with water soluble polyamide adduct curing agent, the curing agent of wet concrete base surface wettability is good, can discharge water curing. Even in the wet base also has a good function of curing, solved the solvent epoxy floor coating materials as the topic of the construction problems face wet. http://www.16t9.com/8g5h/04e9-11.htm |
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