纳米氧化铜对磷酸盐胶黏剂耐水性能的影响

Effect of nano CuO on water resistance of phosphate adhesive

摘要:

以H₃PO₄和Al(OH)₃为基体,纳米氧化铜为填料来制备磷酸盐无机胶黏剂。胶黏剂粘结的莫来石片,在人工海水浸泡168小时后,测试其剪切强度,并以此强度为标准,来探究纳米氧化铜的加入对磷酸盐胶黏剂耐水性能的影响。研究结果表明当纳米氧化铜加入量为基体的20wt%时,莫来石粘结片浸泡在人工海水168小时的最佳剪切强度为7.13MPa。最佳配方粘结的莫来石片经150^_oC至1300^_oC处理后,浸泡在人工海水的最低剪切强度为2.31MPa,通过XRD、SEM等方法分析纳米氧化铜的加入对磷酸盐胶黏剂耐水性能的影响。

Abstract:

_{: Phosphate adhesive were prepared with the H3PO4 and Al (OH)3 as the matrix and nano CuO as the inorganic fillers. The influence of nano CuO on the water resistance of phosphate adhesives was investigated by soaking mullite joints that were bonded by the adhesive in artificial seawater for 168h. The results show that the nano CuO could improve the water resistance of the adhesive. The shear strength of mullite joint was 7.13MPa which is the best strength after immersed in artificial water whenthe content ofnano CuO was 20wt% in matrix. It has good water resistance within the whole heat-treatment temperature range from 150^oC to 1300^oC. The lowest shear strength is 2.31MPa after heat-treatment at 1300^oC and immersed in artificial seawater. The effects of nano CuO on the water resistance of phosphate adhesive were analyzed by XRD and SEM.}