新型海洋防附着涂层的制备及释放研究

Preparation of Novel Antifouling Marine Coatings and Research on Leaching of NaPT Antifouling Compound

以吡啶硫酮钠(NaPT)作为海洋污损生物的防污剂,以聚二甲基硅氧烷树脂作为海洋防附着涂层的基料,进行了有关聚二甲基硅氧烷(PDMS)海洋防附着涂层的研究。利用扫描电镜观察添加NaPT的PDMS防附着涂层的微观形貌并测得PDMS在加入NaPT后涂层表面的静态水接触角未发生太大变化,得出结论NaPT在涂层表面未形成团聚而影响涂层的低表面能特性。采用标准曲线法,通过测定溶液的电导率,根据标准曲线,推算出NaPT的累积释放量,发现含NaPT的防附着涂层没有发生"暴释"的现象。采用GBT/5370—1985防污漆样板浅海浸泡试验方法。将防污网片浸泡在浅海中,逐月观察网片上海洋污损生物附着种类、附着量及繁殖程度,同时与空白网片作比较。观察到涂有防附着涂层的网片被附着面积比率与对照组相比明显降低,防污性能相当优异;而且在涂有防污涂层的网片上,没有藤壶等大型污损生物的附着。

Sodium pyridine thiodone（ NaPT） was used as biocide in marine biofouling protection and incorporated into polydimethyl siloxane （PDMS） coatings. This article investigated the distribution and morphological structure of NaF＇T in PDMS by SEM and the water contact angles essentially maintained around those values after incorporating NaPT up to 2%, suggesting that most NaPT molecules were entrapped inside the bulk of the polymer matrix rather than aggregating on the surface. The electroconductivity of solution was determined, which was used to calculate, based on the standard curve, the accumulated leaching dosage of NaPT and found that there was no ＂explosive learching＂ of NaPT. According with GB5370-1985, antifouling nets were hung up between net cases in the test maritime space. The attachment, weight and growth of antifouling materials were checked once a month. The result of test proved that the antifouling fishnet material has shown satisfactory antifouling effects.