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磷酸盐基胶黏剂具有固化温度低,剪切强度高,电性能和耐热性能优异等特点。它结合了金属和陶瓷的优点,是耐高温、低介电损耗的理想材料,广泛应用于火箭、导弹及航天飞机上。随着航天航空技术的发展,现有的胶黏剂体系已经无法满足某些特殊性能的要求。采用磷酸二氢铝为主成分,以氧化锌、氧化锆和氧化铁为固化剂,制备了一种可以在120℃固化耐1300℃高温的胶黏剂,研究了胶黏剂各组分对剪切强度的影响并且对胶黏剂耐水性能进行了测试。研究表明这种胶黏剂可以用于陶瓷的修补以及耐高温复合材料的制备。
Phosphate-based adhesives with low curing temperature, high shear strength, electrical properties and excellent heat resistance and so on. It combines the advantages of metal and ceramic is the ideal material for high temperature, low dielectric loss, widely used in rockets, missiles and space shuttles. With the development of aerospace technology, the existing adhesive system has been unable to meet the requirements of some special properties. Adopting aluminum phosphate monobasic as main component, zinc oxide, zirconium oxide and iron oxide as curing agent, a kind of adhesive which can cure 1300 ℃ high temperature at 120 ℃ was prepared. Shear strength and the water resistance of the adhesive has been tested. Studies have shown that this adhesive can be used for ceramic repair and high temperature composite material preparation.