摘要
系统研究了Al/PI/SiO2 有机硅涂料多层隔热结构 (MLI)组成的隔热系统。分别研究了铝膜、作为支撑物的耐热聚酰亚胺塑料和低热导填充物三种材料 ,采用金属铝膜可以有效的阻挡高温红外热辐射 ,而气凝胶和有机硅树脂复合的隔热涂料是热导率很低的材料 ,对接触热传导具有很大的热阻。这种多层结构是一种性能优异的高温隔热体。
Multilayer insulation (MLI) composed of Al film, polyimide and Organo silicone have been investigated. It is shown that Al film have low emissivity. Polyimide(PI) can be used under 500℃ for a short time. It is the suitable materials for our multi-layer insulation system as underlay which provide flexibility and mechanical intensity. The weightlessness is no more than 5% under 500℃ by TGA. Organosilicone been used as a part of thermal insulating coating. we mix silicone with pigment such as aerogel powder and other agent according to traditional paint process. The coating on PI plastic via rolling and brush show have good adhesion. we also analyze the reason. Finally, we measure the thermal insulation effect of the MLI system.
出处
《材料科学与工程学报》
CAS
CSCD
北大核心
2003年第2期221-223,共3页
Journal of Materials Science and Engineering
基金
国家自然科学基金资助项目 (699780 1 7
5980 2 0 0 7)
中国工程物理研究院军品配套项目
