三烃基系有机锡化合物的制备及防污效果优选评价

PREPARATION AND ANTIFOULING EFFECT SCREENING-EVALUATION OF TRIALKYLTIN COMPOUND

本文报道了17种三烃基系有机锡及其酯的制备方法和含锡量的测定结果。用它们与沥青和高分子聚合物这两种成膜物质配制成两个系列共34个防污涂料配方,进行了防污效果优选评价实验。海上静态挂板历时2年3个月,经历了3个生物繁殖附着旺季,筛选出三丁基氟化锡D-21,LIR 107和三苯基氢氧化锡LIR 109等3个防污效果最好的配方。

According to various reaction equations, 17 specimens of trialkyltin compounds have been made. The tin content in each candidate AF agent has also been determind. All of these exceed 98%.The AF efficiency screening test was carried out at Qingdao Harbour during the period from June 7, 1985 to Oct. 19, 1987. Four selection criteria have been usel in present paper for evaluation of efficiency as following:Class Ⅰ: no fouling organisms attaching to the panel surface.Class Ⅱ: the covering area by fouling organisms<5%.Class Ⅲ: the covering area by fouling organisms = 6-15%.Class Ⅳ: the covering area by fouling organisms = 16-100%.The experimental results clearly indicate that the tributyltin fluoride and triphenyltin hy-drovile (coal-tar pitch formula) belonging to the first class are of the best efficiency as a an-tifoulant for long-term AF coating which protect the test panel against the growth of marine organisms perfectly.The data obtained in this experiment also show that the antifouling efficiency not only depends on the type of organotin but also relates to the film-former. The latter seems to be the most important in this aspect. The different kind of film-former will give different results. So before a kind of organotin is used in AF coating, the screening test has to be conducted to select out which kind of film-former is the most suitable one. This result is used to prove rhe design of AF coating formula. Otherwise, it mi ght cause the waste of materials and not achieve the desired good AF performance.