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首页> 外文会议>Materials science amp; technology 2011 conference amp; exhibition >Processing and Evaluation of Durable Corrosion Inhibiting Polyimide-Silicone Coatings for the protection of Al 2024-T3
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Processing and Evaluation of Durable Corrosion Inhibiting Polyimide-Silicone Coatings for the protection of Al 2024-T3

机译：耐腐蚀缓蚀聚酰亚胺-硅酮涂层对Al 2024-T3的保护作用及评价

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Polyimide/silicone-epoxy (PI/ES) coatings were successfully formulated and cast on Alrn2024-T3 coupons and their corrosion performance was evaluated using DC Polarization (DCP).rnDCP tests showed that, after 15 days of immersion in 3.5% NaCl, PI coatings containing 2% ESrnshowed better retention of corrosion inhibiting properties. The polarization resistance (R_p),rnvalues of 3.62 kΩ, 6.46 MΩ and 0.193 MΩ were obtained for PI and PI coatings containing 2%rnand 5% ES. Contact angles results showed increasing hydrophobility (high contact angle) withrnincreasing concentration of ES. Dynamic mechanical analysis results showed enhanced gammarn(γ) and beta (β) relaxation in PI/ES coatings as well as a significant increase in the rubberyplateaurnmodulus. The presence of ES produced a duplet T_g of 344 ℃ and 437 ℃ for the PI/ESrnhybrid.
机译：成功地在Alrn2024-T3试样上配制了聚酰亚胺/硅氧烷-环氧树脂（PI / ES）涂料并浇铸，并使用DC极化（DCP）评估了它们的腐蚀性能.rnDCP测试表明，在3.5％NaCl中浸泡15天后，PI含有2％ESrn的涂料表现出更好的缓蚀性能。 PI和含2％rn和5％ES的PI涂层的极化电阻（R_p）的rn值为3.62kΩ，6.46MΩ和0.193MΩ。接触角结果表明，随着ES浓度的增加，疏水性增加（高接触角）。动态力学分析结果表明，PI / ES涂层中的γ（γ）和β（β）弛豫增强，并且橡胶平台的模量显着增加。 ES的存在使PI / ESrnhybrid的双链体T_g分别为344℃和437℃。

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