环氧改性有机硅树脂基热防护涂层的制备及抗烧蚀性能研究  

Preparation and Ablation Properties of Epoxy-modified Silicone Resin-based Thermal Protective Coatings

作　　者：王彬 孙胃涛 王俊锋 陈永彬 王宇灿 Wang Bin;Sun Weitao;Wang Junfeng;Chen Yongbin;Wang Yucan(College of Mechatronics Engineering,Binzhou University,Binzhou,Shandong 256600,China;The Sixth Academy of China Aerospace Science and Industry Co.,Ltd.,Hohhot 010010,China)

机构地区：[1]滨州学院机电工程学院,山东滨州256600 [2]中国航天科工集团第六研究院,呼和浩特010010

出　　处：《涂料工业》2022年第12期32-36,共5页Paint & Coatings Industry

基　　金：山东省自然科学基金项目(ZR2021QE297);滨州学院科研基金项目(2021Y16)。

摘　　要：以环氧改性有机硅树脂作为基体,添加二氧化硅、玻璃纤维粉、钛白粉、硅酸盐类填料和复合阻燃剂等无机填料,以低分子聚酰胺作为固化剂,设计制备了环氧改性有机硅热防护涂层,并且分析了填料种类以及添加量对涂层力学性能和抗烧蚀性能的影响。结果表明:添加无机填料能大幅提高涂层的强度和热解保留质量,有效提升涂层抗烧蚀性能;在改善涂层的抗烧蚀性能方面,玻璃纤维粉优于二氧化硅粉,钛白粉显著优于硅酸盐类填料。In this paper,epoxy modified silicone resin-based thermal protective coatings were prepared with epoxy modified silicone resin as matrix and low molecular polyamide used as curing agent.Inorganic fillers such as silica,glass fiber powder,titanium dioxide,silicate fillers and flame retardants were also added.The effects of filler types and content on the mechanical properties and ablation properties of the coating were analyzed.The results showed that the addition of inorganic fillers could greatly improve the strength and pyrolysis residual weight of the thermal protective coating,and effectively improve the ablation resistance of the coating.Under the condition of high temperature oxygen-acetylene ablation,the improvement effect of glass fiber powder on the ablation resistance of the coating was better than that of silica powder,and titanium dioxide with good high temperature stability was significantly better than that of silicate fillers.

关 键 词：环氧改性有机硅 热防护涂层 抗烧蚀性能 无机填料 

分 类 号：TQ637[化学工程—精细化工]