Urushiol (UR) was a kind of natural paint with a long history and excellent performance. Its high price restricts its development. For the sake of the sustainable development of UR, we prepared a new urushiol based coating composition which is of degradation. To be more specific, we develop a blend by diallyl trisulfide (TS) and urushiol, in which a free radical copolymerization process would take place to form a coating composition under UV irradiation. In this work, FT-IR was used to prove the reaction proces; the reversibly cross-linking properties and the rheological properties were also been proved; the basic mechanisms active in microstructure and the associated surface energy was elucidated; mechanical analysis and showed the mechanical property of coating composition. It was found that a copolymer formed by copolymerization of diallyl trisulfide and urushiol. The introduction of trisulfide bonds assists in achieving the reversibly cross-linking under extreme alkalinity (pH > 8). various trisulfide densities brought about different microstructures on the modified urushiol. The surface energy of coating composition had been enhanced after UV-curing and its increase was related to the phase inversion (represented by microstructure). What was more, the existence of flexible segments offered the coating composition with excellent flexibility (2 mm) and rheological properties (15 MPa.S), while the hardness of coating dropped to 2H.

漆酚（UR）是一种历史悠久，性能优良的天然涂料。它的高价格限制了它的发展。为了UR的可持续发展，我们制备了一种新的可降解的基于漆酚的涂料组合物。更具体地说，我们开发了三烯丙基三硫化物（TS）和漆酚的共混物，其中自由基共聚过程将在紫外线照射下发生，从而形成涂料组合物。在这项工作中，FT-IR用于证明反应过程。还证明了其可逆交联性能和流变性能。阐明了微观结构中活跃的基本机理以及相关的表面能。力学分析并显示出涂料组合物的机械性能。发现通过二烯丙基三硫化物和漆酚的共聚形成的共聚物。三硫键的引入有助于在极端碱度（pH> 8）下实现可逆交联。各种三硫化物密度在改性漆酚中产生不同的微观结构。紫外光固化后涂料组合物的表面能得到增强，其增加与相转化有关（以微观结构表示）。而且，柔性链段的存在为涂料组合物提供了优异的柔韧性（2 mm）和流变性能（15 MPa.S），而涂层的硬度降至2H。各种三硫化物密度在改性漆酚中产生不同的微观结构。紫外光固化后涂料组合物的表面能得到增强，其增加与相转化有关（以微观结构表示）。而且，柔性链段的存在为涂料组合物提供了优异的柔韧性（2 mm）和流变性能（15 MPa.S），而涂层的硬度降至2H。各种三硫化物密度在改性漆酚中产生不同的微观结构。紫外光固化后涂料组合物的表面能得到增强，其增加与相转化有关（以微观结构表示）。而且，柔性链段的存在为涂料组合物提供了优异的柔韧性（2 mm）和流变性能（15 MPa.S），而涂层的硬度降至2H。