环氧有机硅烧蚀涂料性能研究  

Study on Performance of Epoxy Silicon Ablation Coatings

作　　者：曹碧雯 杨杰[1] 刘宁[1] Cao Biwen;Yang Jie;Liu Ning(Xi’an Aerospace Composites Institute,Xi’an 710025)

机构地区：[1]西安航天复合材料研究所

出　　处：《航天制造技术》2019年第6期28-31,43,共5页Aerospace Manufacturing Technology

摘　　要：针对有机硅涂料附着力差的问题,采用共缩聚冷混法在有机硅树脂中共混环氧改性有机硅树脂。研究了不同共混配比对基体树脂热稳定性及粘接性能的影响,并探究了不同配比基体树脂对涂层耐热性、烧蚀性能、粘接性能及力学性能的影响。结果表明,随环氧有机硅树脂含量增加,基体树脂失重越大,涂层粘接性能越好;确定添加环氧有机硅比例为30%时,烧蚀涂层800℃残重比为70.85%,粘接力可达1.47 MPa,并具有优异的综合性能。In view of the problem of poor adhesion of silicone coatings, epoxy modified silicone resin was blended in silicone resin by copolycondensation cold mixing method. The effects of different blending ratios on the thermal stability and bonding properties of matrix resins were investigated. In addition, the effects of different proportions of matrix resin on the temperature resistance, ablation performance, bonding properties and mechanical properties of the coatings were investigated. As the content of the expory silicone resin increases, the mass loss of the matrix resin increases, and the adhesion of the caoting layer is better. When the proportion of epoxy-added silicone is 30%, the residual ratio of 800 ℃ is 70.85%, and the adhesion can reach 1.47 MPa with excellent overall performance.

关 键 词：环氧有机硅 烧蚀涂料 热稳定性 粘接性能 

分 类 号：TQ3[化学工程]