Beijing Xinfeng Machinery Factory，Beijing 100854
为了解决现有发射筒内壁用防热涂料脆性大、附着力差等问题，本文以有机硅改性环氧树脂为基体，添加多种耐高温填料，聚酰胺为固化剂，制备了一种防热涂料，并对其耐焰耐热性能、“三防性”、热老化性能等进行了全面的表征分析。结果表明该涂料能够承受200~300 ℃的长时高温，900 ℃下烧蚀10 s内涂层无变化，且其附着力、“三防性”优良。
In order to solve the problems of high brittleness and poor adhesion of the existing thermal-protection coating for the inner wall of launch canister， silicone modified epoxy resin as the matrix， a variety of high-temperature resistant fillers and polyamide as the curing agent were used to prepare the thermal-protection coating. Its flame resistance， heat resistance， "three-proofings" and thermal aging performance had been fully characterized and analyzed. The results show that the coating can withstand a long-term high temperature of 200~300 ℃， ablation at 900 ℃ within 10 s， and its adhesion and "three-proofings" are superior.