Synthesis and Characterization of Siloxane Resins Derived from Silphenylene-Siloxane Copolymers Bearing Benzocyclobutene Pendant Groups

doi:10.1002/pola.23093

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	Synthesis and Characterization of Siloxane Resins Derived from Silphenylene-Siloxane Copolymers Bearing Benzocyclobutene Pendant Groups
	Zuo, Xiaobiao; Chen, Jiansheng; Zhao, Xiaojuan; Yang, Shiyong; Fan, Lin
刊名	JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
	2008-12-01
卷号	46 期号:23 页码:7868-7881
关键词	Benzoeyclobutene Curing Of Polymers Dielectric Properties High Performance Polymers High Temperature Materials Kinetics (Polym.) Low Dielectric Constant Moisture Resistance Networks Silphenylene-siloxane Thermal Stability
ISSN号	0887-624X
DOI	10.1002/pola.23093
英文摘要	Two bis(dimethylamimo)silanes with benzocyclobutene (BCB) groups, bis(dimethylamino)methyl(4'-benzocyclobutenyl)silane (2) and bis(dimethylamino)methyl [2'-(4'-benzocyclobutenyl)vinyl]silane (4), were synthesized from different synthetic routes, which were then employed to prepare two novel silphenylene-siloxane copolymers (SiBu and SiViBu) bearing latent reactive BCB groups by polycondensation procedure with 1,4-bis(hydroxydimethylsilyl)benzene. At elevated temperatures these copolymers were readily converted to highly crosslinked films and molding disks with network structures by polymer chain crosslinking, which followed the first-order kinetic reaction model. The final resins of SiBu and SiViBu demonstrated excellent thermal stability with high glass transition temperatures (218 and 256 degrees C) and high temperatures at 5% weight loss (553 and 526 degrees C in N(2), 530 and 508 degrees C in air). After aging at 300 degrees C in air for 100 h, the cured resins showed weight loss lower than 4%. The films of cured SiBu and SiViBu also exhibited relatively low dielectric constants of 2.66 and 2.64, low dissipation factors of 2.23 and 2.12 x 10(-3), low water absorptions (<= 0.28%), and high transparence in the visible region with cutoff wavelengths of 321 and 314 nrn. Moreover, the aged films exhibited good dielectric properties and low water absorptions. (C) 2008 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 46: 7868-7881, 2008
语种	英语
出版者	JOHN WILEY & SONS INC
WOS记录号	WOS:000261582400024
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/64145]
专题	中国科学院化学研究所
通讯作者	Fan, Lin
作者单位	Chinese Acad Sci, Inst Chem, Lab Adv Polymer Mat, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Zuo, Xiaobiao,Chen, Jiansheng,Zhao, Xiaojuan,et al. Synthesis and Characterization of Siloxane Resins Derived from Silphenylene-Siloxane Copolymers Bearing Benzocyclobutene Pendant Groups[J]. JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY,2008,46(23):7868-7881.
APA	Zuo, Xiaobiao,Chen, Jiansheng,Zhao, Xiaojuan,Yang, Shiyong,&Fan, Lin.(2008).Synthesis and Characterization of Siloxane Resins Derived from Silphenylene-Siloxane Copolymers Bearing Benzocyclobutene Pendant Groups.JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY,46(23),7868-7881.
MLA	Zuo, Xiaobiao,et al."Synthesis and Characterization of Siloxane Resins Derived from Silphenylene-Siloxane Copolymers Bearing Benzocyclobutene Pendant Groups".JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY 46.23(2008):7868-7881.