硅酸盐防腐胶黏剂的性能研究

Study on performances of anti-corrosive silicate adhesive

采用电子精密材料试验机通过压剪强度（力学性能）测试考察了钠钾物质的量比及pH对硅酸盐防腐胶黏剂性能的影响,得到了硅酸盐防腐胶黏剂的适宜配方（质量分数）：混合胶料（钠钾物质的量比为2）为32%～35%,固化剂（二氧化硅）为25%,填料（三氧化二铝）及其他辅料为35%,水为5%～8%,pH控制在12附近。采用电位-pH图分析了制备的硅酸盐胶黏剂对基材铁及其合金的腐蚀程度,结果表明其具有低腐蚀性的特点。

Effects of amount-of-substance ratio of Na to K and pH on performances of anti-corrosive silicate adhesive were investigated by testing compression shear strength（mechanical property） through electron precision material test machine,and an appropriate formula（mass fraction） for anti-corrosive silicate adhesive was gained.Namely,mixture binder（amount-of-substance ratio of Na to K is 2） was 32%～35%,curing agent（SiO2） was 25%,filling（Al2O3） and other accessories were 35%,water was 5%～8%,and pH was about 12. Corrosion experiments on the prepared adhesive have been done by using analyzing method of potential - pH chart. Results showed that the adhesive has little corrosion to adhesive interface.