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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
2008-12-01
Source PublicationJOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
ISSN0887-624X
Volume46Issue:23Pages:7868-7881
AbstractTwo 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
KeywordBenzoeyclobutene Curing Of Polymers Dielectric Properties High Performance Polymers High Temperature Materials Kinetics (Polym.) Low Dielectric Constant Moisture Resistance Networks Silphenylene-siloxane Thermal Stability
DOI10.1002/pola.23093
Indexed BySCI
Language英语
WOS IDWOS:000261582400024
PublisherJOHN WILEY & SONS INC
Citation statistics
Cited Times:18[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/64146
Collection中国科学院化学研究所
Corresponding AuthorFan, Lin
AffiliationChinese Acad Sci, Inst Chem, Lab Adv Polymer Mat, Beijing 100190, Peoples R China
Recommended Citation
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.
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