Preparation and properties of benzocyclobutene based low-k linear polysiloxane. Issue 23 (1st June 2022)

• Record Type: Journal Article
• Authors: Peng, Qiuxia; Hu, Huan; Deng, Yueting; Long, Quan; Ma, Jiajun; Yang, Junxiao
• Is Part Of: Journal of materials chemistry. Volume 10:Issue 23(2022)
• Page Start: 9106
• Page End: 9113
• Publication Date: 2022-06-01
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/d1tc06041d
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : Linear BCB-containing polysiloxane with low k, low CTE, high T 5 and high transparency was synthesized through Heck reaction and hydrolysis condensation reaction. Abstract : Most benzocyclobutene (BCB) resins require a thermal pre-polymerization process to achieve the desired viscosity for application. However, the process is difficult to control because it is time-consuming and requires high temperatures. Therefore, a mild and simple method for preparing BCB based polysiloxane is proposed herein. Using a combination of the Heck reaction and hydrolytic condensation, linear BCB-based polysiloxane of various molecular weights can be routinely prepared by controlling the hydrolysis conditions. The obtained polymers have excellent dielectric properties (dielectric constants < 2.5 at 10 MHz) and thermal stability ( T 5 (the temperature of 5% weight loss) > 470 °C) after curing.