At present, phase change materials (PCMs) with single function hardly meet the needs of advanced intelligent materials in practical applications, and the multifunction integration is the current trend. However, photo-cured multifunctional PCMs are hampered by insufficient transparency due to adding functional fillers, such as carbon and metal materials. The novel strategy is necessary to overcome this limitation. Here, a photo-cured multifunctional PCM is prepared by using the design of a lamellar structure composing the photo-cured phase change polymer layer and the functional fillers layer. The curing of the phase change polymer is realized by the photo-induced "thiol-ene" click reaction, and reversible dynamic disulfide bonds are introduced into the PCM, which not only gives the phase change crosslinked network reprocessability, but also strengthens the interface layer by the chain rearrangement to form a stable composite structure. The carboxylated multiwalled carbon nanotubes (CCNTs) and silver nanowires (AgNWs), as functional fillers, give the PCM photo-thermal conversion, self-cleaning and electromagnetic shielding (EMI SE) performances. Its phase change latent heat and photo-thermal conversion can reach 105.2 J/g and 78.5 %, and the water contact angle is 142° with self-cleaning performance. In addition, due to the dense and well-developed conductive path formed by AgNWs layer on the PCM surface, the EMI SE effect can reach 39 dB with only 6.3 % (in mass) filler content and 7.2 % phase change latent heat loss. As far as we know, this is the first report about photo-cured PCMs with self-cleaning, photo-thermal conversion and EMI SE performances.

目前，单一功能的相变材料（PCM）很难满足先进智能材料在实际应用中的需求，多功能集成是当前的趋势。然而，由于添加碳和金属材料等功能性填料，光固化多功能相变材料的透明度不足。新颖的策略对于克服这一限制是必要的。这里，通过使用由光固化相变聚合物层和功能填料层组成的层状结构的设计来制备光固化多功能PCM。通过光引发的“硫醇-烯”点击反应实现相变聚合物的固化，并在PCM中引入可逆动态二硫键，不仅赋予了相变交联网络可再加工性，而且增强了界面层通过链重排形成稳定的复合结构。羧化多壁碳纳米管（CCNT）和银纳米线（AgNW）作为功能填料，赋予PCM光热转换、自清洁和电磁屏蔽（EMI SE）性能。其相变潜热和光热转化率可达105.2 J/g和78.5%，水接触角为142°，具有自洁性能。此外，由于AgNWs层在PCM表面形成致密且发达的导电路径，EMI SE效应可以达到39dB，而填料含量仅为6.3％（质量），相变潜热损失为7.2％。据我们所知，这是第一份关于具有自清洁、光热转换和EMI SE性能的光固化PCM的报道。