一种发射筒用防热涂料的制备与表征

Preparation and Characterization of A Thermal-protection Coating for Launch Canister

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 hightemperature 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.