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- Title
A Fluorinated Thermocrosslinkable Organosiloxane: A New Low‐k Material at High Frequency with Low Water Uptake.
- Authors
Liu, Fengping; Chen, Xingrong; Hou, Jiaren; Sun, Jing; Fang, Qiang
- Abstract
In order to obtain low‐k material with good comprehensive properties, a trifluoromethyl‐containing organosiloxane with thermocrosslinkable vinyl and benzocyclobutene groups is designed and synthesized through the Piers–Rubinsztajn reaction. After treating at high temperature, the organosiloxane changed to form a cross‐linked polysiloxane (called as c‐FSi‐BCB). c‐FSi‐BCB exhibits good dielectric properties with dielectric constant (Dk) of 2.60 and dielectric loss (Df) of 1.49 × 10−3 at a high frequency of 5 GHz. Importantly, c‐FSi‐BCB maintains such good dielectric properties and exhibits low water uptake of below 0.076%, even after immersing it in boiling water for 96 h. c‐FSi‐BCB also displays good thermostability with a 5% weight loss temperature (T5d) of 453 °C. These data indicate that this fluorinated organosiloxane is suitable as the matrix resin for the fabrication of devices used in 5G communication.
- Subjects
SILOXANES; PERMITTIVITY; DIELECTRIC properties; DIELECTRIC loss; VINYL polymers; HIGH temperatures
- Publication
Macromolecular Rapid Communications, 2021, Vol 42, Issue 5, p1
- ISSN
1022-1336
- Publication type
Article
- DOI
10.1002/marc.202000600