Study on Preparing High Temperature Resistant Phosphate Adhesive Cured atModerate Temperature

Phosphate adhesive which can be cured at low temperature has high shear strength,good electric property and heat-resistant.They are good materials which have high temperature resistance and low dielectric loss, and they combine the virtues of the ceramics and the metal.Phosphate adhesive are widely used in the field of rockets,missiles and space shuttle.With the development aerospace,the present adhesive cannot be satisfied with the special requirements.An adhesive is prepared with Al(HPO4)2 as the major constituent and ZnO,ZrO2 and Fe2O3 as the curing agents which can be cured at 120℃ and has a high temperature resistance of 1300℃.And the effect of each component on the shear strength of the adhesive are researched and water-resistance is tested.The study shows that this adhesive can be used in the ceramics repair and preparation of high temperature resistant composite materials.