Research on coating method of thermal conduction silicone grease for spacecraft equipment based on stencil printing

Abstract

Abstract Thermal conduction silicone grease coating is one of the most important methods for passive temperature control of spacecraft equipment. It is difficult to have quantitative control over coating thickness and coating uniformity by manual coating method. This paper introduces the application, coating method and heat transfer mechanism of thermal conduction silicone grease, and proposes a thermal conduction silicone grease coating method for spacecraft equipment based on stencil printing. Also, this paper proves that the method is feasible with pull-off test, thermal vacuum test and thermal conduction test. The test results found that the contact rate of thermal conduction silicone grease with stencil coating is higher than that with manual coating; stencil coating does not cause abnormal overflow of thermal conduction silicone grease; the thermal conduction with stencil coating is nearly the same as that with manual coating.