Wu Yufei, Liu Jiangling, Cheng Fei, Jiao Xiaojiao, Fan Yunxin, Lai Guoqiao, Luo Mengxian, Yang Xiongfa
Key Laboratory of Organosilicon Chemistry and Material Technology of Education Ministry, Hangzhou Normal University, Hangzhou 311121, China.
ACS Omega. 2020 Jun 17;5(25):15311-15316. doi: 10.1021/acsomega.0c01338. eCollection 2020 Jun 30.
To improve thermal stability and hardness of UV-cured materials, a series of UV-cured solvent-free coatings were prepared from allyl-terminated hyperbranched polycarbosilanes and thiol silicone resins. The silicone coatings prepared have pencil hardness of 4-9 H, water absorption no more than 0.04 wt %, and transmittance higher than 94%. The temperature for the coatings' starting thermal decomposition is higher than 236 °C; especially, that of the coating prepared with G1 is as high as 371.1 °C. The UV-cured coatings in this work exhibit much higher pencil hardness than and superior thermal stability to those reported previously.
为提高紫外光固化材料的热稳定性和硬度，以烯丙基封端的超支化聚碳硅烷和硫醇硅树脂制备了一系列紫外光固化无溶剂涂料。所制备的有机硅涂料铅笔硬度为4 - 9H，吸水率不超过0.04 wt%，透光率高于94%。涂料开始热分解的温度高于236℃；特别是，用G1制备的涂料高达371.1℃。本工作中的紫外光固化涂料表现出比先前报道的涂料更高的铅笔硬度和更优异的热稳定性。
