文献类型：期刊文献

英文题名：A rosin-based dielectric polymer with intrinsic low dielectric constant and comprehensively excellent properties

作者：Fu, Fei[1,2] Shen, Minggui[1] Wang, Dan[1] Liu, He[1] Shang, Shibin[1] Hu, Feilong[3] Song, Zhanqian[1] Song, Jie[4]

第一作者：Fu, Fei

通信作者：Shen, MG[1];Song, ZQ[1]|[a0005c3716bb5fed5ea85]宋湛谦;

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Key Lab Biomass Energy & Mat,State Forestry Adm, Natl Engn Lab Biomass Chem Utilizat,Key & Open La, Nanjing 210042, Jiangsu, Peoples R China;[2]Nanjing Forestry Univ, Coinnovat Ctr Efficient Proc & Utilizat Forest Re, Nanjing 210037, Peoples R China;[3]Guangxi Univ Nationalities, Guangxi Collaborat Innovat Ctr Chem & Engn Forest, Guangxi Key Lab Chem & Engn Forest Prod, Nanning 530006, Peoples R China;[4]Univ Michigan, Dept Chem & Biochem, Flint, MI 48502 USA

年份：2021

卷号：9

期号：38

起止页码：13144-13156

外文期刊名：JOURNAL OF MATERIALS CHEMISTRY C

收录：;EI(收录号：20214111004174);Scopus(收录号：2-s2.0-85116631890);WOS:【SCI-EXPANDED(收录号:WOS:000692690700001)】；

基金：This work was supported by the Guangxi Key Laboratory of Chemistry and Engineering of Forest Products (GXFK2003).

语种：英文

外文关键词：Anthracene - Dielectric losses - Hydrogenation - Hydrophobicity - Monomers - Musculoskeletal system - Silicon compounds

摘要：It is known that the tremendous structural units in a polymer chain can result in a larger free volume of the bulk, which can effectively decrease the dielectric constant of the polymer. According to this design strategy, a novel rosin-based BCB monomer containing Si-O and characterized by a symmetrical molecular structure was successfully synthesized. Subsequently, an amorphous cross-linked network, with a dielectric constant of 2.44 and a dielectric loss of 2.02 x 10(-3) at 1.0 MHz, was formed after the monomer was polymerized at an appropriate temperature. Additionally, the effects of the rosin skeleton on other properties of the modified BCB resin were studied. Compared with those of a BCB resin without a rosin skeleton, the dielectric properties, thermal stability, mechanical properties, and hydrophobicity of the rosin-modified BCB resin were significantly improved. The improvement of these properties is due to the presence of a hydrogenated phenanthrene ring in rosin, which is difficult to rotate and hinders the movement of the molecular chains in the modified BCB resin. Meanwhile, the rigidity and hydrophobicity of the hydrogenated phenanthrene ring can also improve the properties of the BCB resin. Thus, this study shows that the introduction of a rosin skeleton can significantly and comprehensively improve the properties of BCB materials.