纳米氧化铜对磷酸盐胶黏剂耐水性能的影响

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,在人工海水中浸泡168 h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,纳米氧化铜可以有效改善粘结剂的耐水性能,并且当加入量为基体的20%(质量分数,下同)时,经150℃处理的莫来石粘结片浸泡在人工海水中168 h的抗剪切强度最高,为7.13 MPa;莫来石粘结片经1300℃处理后,浸泡在人工海水的抗剪切强度最低,为2.31 MPa;发现经煅烧处理的纳米氧化铜相比未煅烧处理的氧化铜可以更好地提高粘结剂粘结强度。

Effect of nano CuO on water resistance of phosphate adhesive

_{: 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.}