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电子设备或精密仪器,往往需要在特定温度下工作。当环境温度太低时(例如-50℃)有些器件将不能正常工作。此时,需用加温办法,提高局部环境温度。电阻加热片是最简便,可靠的加温方法之一。过去我所空间电子设备所采用的加热片,是用硅橡胶—玻璃布—镍铬丝制造。这种方法制造加热片的优点是工艺流程短,但生产效率低,外形一致性差,在性能上热交换效率低。采用镍铬箔,用光化学法蚀刻所需要的图形(阻值),用玻璃布作主绝缘层,用硅凝胶
Electronic devices or precision instruments often need to work at specific temperatures. Some devices will not work properly when the ambient temperature is too low (eg -50 ° C). At this point, the need to use heating methods to improve the local ambient temperature. Resistance heating film is the most simple and reliable heating method. In the past, the spacers used in our space electronics were made of silicone rubber-glass cloth-nichrome wire. This method has the advantage of manufacturing the heating plate is a short process, but the production efficiency is low, the appearance of poor consistency, the performance of the heat exchange efficiency is low. The use of nickel-chromium foil, photochemical etching required graphics (resistance), with a glass cloth as the main insulation layer with a silicone gel