高强度聚硫密封腻子的制备及粘接性能研究

Study on Preparation of High Strength Polysulfide Sealing Putty and its Bonding Property

以液态聚硫橡胶为主体材料、二氧化锰为固化剂研究了不同牌号聚硫橡胶配比、二氧化锰用量对密封腻子力学性能的影响以及橡胶粘接面处理形式对密封腻子粘接性能的影响.结果显示,当不同分子量的液体聚硫橡胶以质量比30∶55∶15复配使用、二氧化锰用量为12份时,聚硫密封腻子具有较好的力学性能,砂带打磨结合等离子处理橡胶粘接面可以大幅度提高密封腻子的粘接强度.

Using liquid pdlysulflde rubber as main material and manganese dioxide as curing agent,the effects of ratios of different grades of polysulfide rubbers and manganese dioxide dosage on mechanical properties of sealing putty are studied,so is the effect of treatment form of rubber bonding surface on bonding properties of sealing putty.When the amount of manganese dioxide is 12 parts,the polysulfide sealing putty has better mechanical properties.The bonding strength of putty could be greatly improved when rubber bonding surface is ground with sand belt and treated with plasma.