摘要
【目的】制备具有荧光和超疏水功能的透明竹材,并对其进行性能研究与评价,为竹材的功能化应用提供参考。【方法】通过对竹材进行脱木素处理、掺杂荧光微胶囊环氧树脂的真空浸渍处理、超疏水处理等步骤,制备出具有荧光和超疏水性能的透明竹材,并对其各项性能进行表征。【结果】制备的透明竹材具有高透明度、高雾度、光散射性能、热绝缘性能、荧光性能和超疏水性能等优良特性。超疏水荧光透明竹材在波长400~800 nm内的光透过率为80%,雾度基本保持在80%以上,相比较透明竹材透光率略微下降,但雾度有了一定的提升,具有良好的光散射性;其纵向抗拉强度为123.3 MPa,横向拉伸强度相比较刨切竹单板有了明显的提升,达3.2 MPa;能够在365 nm紫外光下发出蓝色荧光。与玻璃和荧光透明竹材相比,超疏水荧光透明竹材具有更低的导热系数,为0.302 3 W·m^(-1)·K^(-1)。该材料具备超疏水性能,水在其表面的接触角为151.2°,滚动角为3.5°。【结论】本研究制备的超疏水荧光透明竹材融合了高透光性、高雾度、光散射性、良好的机械强度、优异的热绝缘性能、荧光特性和超疏水性等优异性能于一体。
[Objective]Transparent bamboo with fluorescent and superhydrophobic functions were prepared,and their properties were studied and evaluated,in order to provide a reference for the functionalized application of bamboo-based materials.[Method]Transparent bamboo with fluorescence and superhydrophobic properties were prepared by delignification,vacuum impregnation of doped fluorescent microcapsule epoxy resin,superhydrophobic treatment and other steps,and its properties were measured.[Result]The prepared transparent bamboo has excellent properties including high transparency,high haze,light scattering properties,thermal insulation properties,fluorescence properties,and superhydrophobic properties.The light transmittance of superhydrophobic fluorescent transparent bamboo in the wavelength range of 400 to 800 nm is 80%,and the haze is basically maintained above 80%.Compared with transparent bamboo,the light transmittance of superhydrophobic fluorescent transparent bamboo decreases slightly,but the haze has been improved to a certain extent,and it has good light scattering.Its longitudinal tensile strength is about 123.3 MPa,and the transverse tensile strength has been significantly improved compared with the sliced bamboo veneer,reaching 3.2 MPa.It can emit blue fluorescence under 365 nm ultraviolet light.Compared with glass and fluorescent transparent bamboo,superhydrophobic fluorescent transparent bamboo has a lower thermal conductivity of 0.3023 W·m^(-1)·K^(-1).The contact angle of water on its surface is 151.2°and the rolling angle is 3.5°.[Conclusion]The prepared superhydrophobic fluorescent transparent bamboo integrates excellent properties:high light transmittance,high haze,light scattering,good mechanical strength,excellent thermal insulation performance,fluorescence characteristics and superhydrophobicity.
作者
郑淼
彭浩哲
林波
李延军
王开立
ZHENG Miao;PENG Haozhe;LIN Bo;LI Yanjun;WANG Kaii(School of Materials Science and Engineering,Nanjing Forestry University,Nanjing 210037,Jiangsu,China;Bamboo Industry Institute,Zhejiang A&F University,Hangzhou 311300,Zhejiang,China)
出处
《浙江农林大学学报》
北大核心
2025年第1期193-201,共9页
Journal of Zhejiang A&F University
基金
国家自然科学基金青年基金资助项目(32301516)
南平市科技计划项目(N2022CX101)。
关键词
透明竹材
脱木素
荧光性能
超疏水
热绝缘
transparent bamboo
delignification
fluorescent property
superhydrophobicity
thermal insulation
