摘要
Aerogels are widely used as thermal insulation materials because of their high porosity and low bulk density.However,the insulation performance of aerogels is limited to a narrow temperature range.Besides,the preparation of aerogel materials with precisely controlled and complex architectures is still challenging.Here,we report 3D printed polyimide/silica aerogel particle(PI/SAP)composite aerogels for thermal insulation in a wide range of temperature with customized applications.The printability and shape fidelity of 3D printed composite aerogels is improved by adding hydrophilic SAP as a rheology modifier.The resulting PI/SAP composite aerogel exhibits excellent flame-retardant properties and thermal insulation from-50℃ to 1300℃.Moreover,the PI/SAP composite aerogel with customized shape can be applied for battery insulation at subzero temperatures,promising to be used as customizable and stable insulating materials in a variety of complex and extreme applications.
基金
financially supported by the National Key Research and Development Program of China(No.2022YFB3805700)
the National Natural Science Foundation of China(Nos.52073053 and 52233006)
Young Elite Scientists Sponsorship Program by CAST(No.2021QNRC001)
Shanghai Rising-Star Program(No.21QA1400300)
Innovation Program of Shanghai Municipal Education Commission(No.2021-01-07-00-03-E00108)。
