Thermally responsive flexible self-luminous binary fatty alcohol eutectic-based reversible thermochromic passive energy-saving eucalyptus wood aerogel composites
Thermally responsive flexible self-luminous binary fatty alcohol eutectic-based reversible thermochromic passive energy-saving eucalyptus wood aerogel composites
复制标题
DOI：
10.1016/j.colsurfa.2023.132343
复制
发表时间：
2023-09
期刊：
影响因子：
--
通讯作者：
Ruiqian Tao;Nianrong Feng;Jiahua Li;Bochen Li;Yugui Lv;Kenan Li;Dongying Hu
中科院分区：
文献类型：
--
作者：
Ruiqian Tao;Nianrong Feng;Jiahua Li;Bochen Li;Yugui Lv;Kenan Li;Dongying Hu
柔性自发光可逆热致变色被动节能复合材料（TPCMs）具有易渗漏、不可见、固相刚性、弱光吸收等缺点，其发展面临着挑战。因此，以天然胶乳/长余辉组分为柔性自发光基质，以木气凝胶为支撑骨架，以最佳二元脂肪醇低共熔物（C14 C20）为基础，巧妙地构建了新型TPCM。其中，C14 C20 R-TEW-1 R和C14 C20 G-TEW-0.35 P具有合适的相变温度（28.8 °C和29.7 °C），高潜热值（100.5 J g− 1和119.4 J g−1）和低过冷度（0.7 °C和0 °C）。在相变的诱导下，它们由刚性变为柔性，由红/绿色变为白色，并能吸收光，实现黑暗中的自发光（橙子红色和蓝-绿色），提高光热效率。在传统的热/光稳定性和优异的防漏电性能之外，TPCM实现了温度敏感/控制和自发光的结合，在家庭自动化、建筑被动节能、发光响应开关等领域具有广阔的应用前景。
The development of flexible self-luminous reversible thermochromic passive energy-saving composites (TPCMs) is self-challenge due to the defects of easy leakage, non-visibility, solid phase rigidity, and weak light absorption. So, the emerging TPCMs were cleverly constructed using wood aerogel as support skeleton and different mass ratios of natural latex/long afterglow components as flexible and self-luminescent matrix based on optimal binary fatty alcohol eutectic (C14C20). Among them, C14C20R-TEW-1R and C14C20G-TEW-0.35 P stand out with suitable phase transition temperatures (28.8 °C and 29.7 °C), high latent heat values (100.5 J g−1and 119.4 J g−1), and low supercooling (0.7 °C and 0 °C). Induced by phase change, they change from rigid to flexible, from red/green to milky white, and can absorb light to achieve self-luminescence in the dark (orange red and blue-green) and enhanced photothermal efficiency. Beyond the traditional thermal/light stability and excellent anti-leakage performance, TPCMs realizes the combination of temperature sensitivity/control and self-luminous, providing broad application prospects in home automation, passive energy-saving in buildings, luminescent response switches, and other fields.