- 作者: 林義宗 ; 鮮祺振 ; 張錦泉 等
- 作者服務機構: 中山科學研究院
- 中文摘要: The corrosion of printed circuit boards can be effectively prevented with a polyurethane conformal coating. In this study, the protective performance of PU coating was investigated systematically through electrochemical measurements and simulated exposure/immersion tests. Some fungi tests were also included. All experimental results show that a polyurethane coating effectively inhibits corrosion on printed circuit boards. The optimal thickness of the coating film should be about 60.mu.m. Long -term exposure tests showed that this coating material could preserve the reliability of the investigated printed circuit boards for more than 400 days in a 90% relative humidity environment at 25.degree.C.
- 英文摘要: --
- 中文關鍵字: Corrosion Inhibition; Conformal Coating; Ac Impedance Measurement; Printed Circuit Board; Polyurethane
- 英文關鍵字: 腐蝕抑制;塗膜(塗層);交流阻抗測量;印刷電路板;聚胺基甲酸酯