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首页> 外文会议>Corrosion 2008;Corrosion conference and expo >COMPARISON OF POLYSILOXANE TWO-COAT SYSTEMS VS. A TRADITIONAL THREE COAT SYSTEM AS EXTERNAL PAINT SYSTEMS OVER STEEL FOR CANADIAN APPLICATIONS
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COMPARISON OF POLYSILOXANE TWO-COAT SYSTEMS VS. A TRADITIONAL THREE COAT SYSTEM AS EXTERNAL PAINT SYSTEMS OVER STEEL FOR CANADIAN APPLICATIONS

机译：聚硅氧烷二涂层体系的比较加拿大应用的传统三涂层系统作为钢上的外部涂料系统

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摘要

A laboratory study was conducted to examine the potential impact of replacing a three-coat paint system with proposed polysiloxane two-coat alternatives. All three systems use a zinc-rich epoxy primer. The three-coat system has an intermediate epoxy coat and an aliphatic polyurethane topcoat. The two-coat systems use polysiloxane chemistry based topcoats that are applied directly to the primer in one coat. One of the two-coat systems was from the same manufacturer as the three-coat system. All three coatings were applied by the same applicator under controlled and supervised conditions. Tests examined physical properties, adhesion and weathering characteristics.Although there were some minor differences in the performance of the coating systems, the study indicates that replacement of the currently used three-coat system with the tested two-coat systems would not result in significant reduction in coating performance or expected service life. Tests examining extra demands made on coatings exposed to the cold environments of Canada showed a noticeable but similar reduction in the flexibility and impact resistance characteristics of all the coatings when tested at -30°C versus at room temperature and 0°C.
机译：进行了一项实验室研究，以研究用提议的聚硅氧烷两涂层替代品替代三涂层涂料系统的潜在影响。这三个系统均使用富锌环氧底漆。三涂层系统具有中间环氧涂层和脂肪族聚氨酯面涂层。两涂层系统使用基于聚硅氧烷化学的面漆，该面漆直接涂在一层涂料中。两涂层系统之一与三涂层系统来自同一制造商。所有三层涂料均由同一涂布机在受控和监督的条件下涂布。测试检查了物理性能，附着力和耐候性。 尽管涂层系统的性能略有差异，但研究表明，用经过测试的两涂层系统替代当前使用的三涂层系统不会导致涂层性能或预期使用寿命的显着降低。检验对暴露在加拿大寒冷环境中的涂料提出的额外要求的测试表明，与-30°C和室温和0°C相比，所有涂料的柔韧性和抗冲击性均有明显降低。

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