Low Dielectric Benzocyclobutene-type Polymers Based on Facile Synthesis of Linear Fluorinated Monomer  

作　　者：Quan Sun Zi-Wei Yuan Wen-Jie Fan Meng-Lu Li Wen-Xin Fu 

机构地区：[1]Key Laboratory of Science and Technology on High-Tech Polymer Materials,Institute of Chemistry,Chinese Academy of Sciences,Beijing 100190,China [2]School of Chemistry and Chemical Engineering,University of Chinese Academy of Sciences,Beijing 100049,China [3]Key Laboratory of Chemical Biology of Hebei Province,College of Chemistry and Environmental Science,Hebei University,Baoding 071002,China

出　　处：《Chinese Journal of Polymer Science》2023年第11期1760-1766,I0008,共8页高分子科学(英文版)

基　　金：the National Natural Science Foundation of China(No.22075298);the Beijing Municipal Natural Science Foundation(No.2212053)。

摘　　要：A linear fluorinated benzocyclobutene-type monomer(4F-bis-BCB) was facilely synthesized by a one-step copper-catalyzed etherification reaction and a simple precipitation post-purification method.Moreover,a series of BCB-based polymeric low-dielectric(low-k)materials were obtained by the thermal-induced ring-opening copolymerization of 4F-bis-BCB with divinyl tetramethyl disiloxanebisbenzocyclobutene(DVS-BCB) monomer and further simple thermal curing at high temperature(200-300℃).The resultant fully cured materials demonstrated excellent low dielectric properties at high frequency of 10 GHz(dielectric constant(D_(k))<2.6,dielectric loss(D_(f))<1.57×10^(-2)),great hydrophobicity(water contact angle>116°),ultra-low water absorption(<0.19% after soaked in water at room temperature for 60 h) and excellent planarization ability(surface roughness<0.56 nm of 3 μm-thick film).Overall,this new fluorinated BCB-type monomer provides us an alternative for the facile preparation of low-k polymeric materials and exhibits great potential for future applications in high-frequency communication and three-dimensional high-density packaging technologies.

关 键 词：Fluorinated monomer Benzocyclobutene-based polymer Low dielectric material Advanced packaging 

分 类 号：O632[理学—高分子化学]