基于丙烯酸硅烷酯柔性自抛光海洋防污涂料制备及性能考察

Preparation and Properties of Flexible Self-polishing Marine Antifouling Coating

摘要:

研制了一种柔韧性优异适用于弹性体基材表面的防污涂料。合成具有自抛光性能的柔性丙烯酸硅烷酯基体树脂,采用加入低分子量韧性树脂外增塑手段进一步增加基体树脂的柔韧性,采用丙烯酸硅烷酯树脂和韧性混合树脂制备了柔性自抛光防污涂料。实验结果表明,丙烯酸硅烷酯基体树脂的玻璃化转变温度-20℃时,具有较好的物理机械性能。基体树脂与韧性树脂比例为7:3时,此时共混树脂的缺陷相对其他配比最小,树脂相容性最好。制备的防污涂料柔韧性为1级,在弹性体基材表面附着力达到4.0MPa,经过60天测试,涂层吸水率在1.1%～1.2%之间,在合理范围内。浅海浸泡挂板36个月具有良好防污效果。研制的柔性自抛光防污涂料,具有优异的防污性能,可满足弹性体基材表面对海洋污损防护需求。

Abstract:

We have developed an anti-fouling coating with excellent flexibility suitable for the surface of elastomer substrates.The first a flexible silyl ester acrylate resin with self polishing property was synthesized, further increasing the flexibility of the matrix resin by adding low molecular weight toughness resin for external plasticization. A flexible self polishing anti-fouling coating was prepared using acrylic silane ester resin and a tough mixed resin Experimental results shown that the glass transition temperature of the resin was -20℃, it had good physical and mechanical properties. Further increase the flexibility of the matrix resin by adding low molecular weight toughness resin. Experimental results shown that the ratio was 7:3, the defects of the blend resin were the smallest compared with other ratios, and the compatibility of the resin was the best. A flexible self polishing antifouling coating was prepared by using acrylic silicone resin and toughness mixed resin. The flexibility of the antifouling coating was Grade 1, the adhesion on the surface of elastomer substratewas 4.0MPa, After 60 days of testing, the water absorption of the coating is between 1.1% and 1.2%, within a reasonable range. The shallow water immersion test for 36 months had good antifouling effect.