低太阳吸收率加成型有机硅热控涂层的研制

Study on Addition Type Silicone Thermal Control Coatings

为了制备低αs/εh值热控涂层 ,必须选择合适的粘料。系统研究了组成对加成型热控涂层性能的影响 ,探讨了颜料与粘料配比、含氢硅油种类、乙烯基硅橡胶种类、Si-H与 CH=CH配比、涂布方式等对热控涂层太阳吸收率 (αs)、红外辐射率 (εh)及αs/εh 影响规律。

The white control coatings with low ratios of solar absorptance to emittance are successfully prepared.The factors (resin type,filler type,ratio of resin to pigment etc.) that affect the property are discussed.The results indicate that coatings made with addition type rubber has lower α s value (<0 20).Increasing ratio of filler to adhesives value,the α s/ ε h value will decrease.In order to made low α s/ ε h value,the more content filler should be added into adhesive without giving up the art.The ratio of [Si H] to [CH=CH 2] has no obvious effect on α s value.But the type of vinyl silicone rubber has effect on α s value.The coating made with higher content vinyl group silicone rubber has larger α s value.For both of spraying and brushing method,brushing is preferred way although coatings made with them has similar α s value.