Polybenzoxazine/organosilicon composites with low dielectric constant and dielectric loss

doi:10.1016/j.cjche.2023.06.024

Abstract

Abstract: The evolution of electronic communication technology raises higher requirements for low dielectric constant (low-k) materials. For this, a benzoxazine functional organosilicon (HP-aptes) with dense Si—O—Si crosslinking networks and large sterically hindered tert-butyl groups was prepared by the sol–gel method. Then, a series of polybenzoxazine composites (PPHP) were prepared from intrinsically low dielectric constant bis-functional benzoxazine monomer (P-aptmds) and HP-aptes. The double crosslinking networks of polybenzoxazine and organosilicon further increased the crosslinking density and decreased the dipole density of composites, which endowed the composites with enhanced low-k properties. When the content of HP-aptes is 30% (mass), the crosslinking density was 2.05×10^-3 mol·cm^-3, while that of PP-aptmds was 3.31×10^-3 mol·cm^-3. In addition, the dielectric constant and dielectric loss of PPHP composite at 1 MHz could reach 2.61 and 0.0056, respectively.

Key words: Polybenzoxazine, Organosilicon, Composite, Dielectric constant

摘要： The evolution of electronic communication technology raises higher requirements for low dielectric constant (low-k) materials. For this, a benzoxazine functional organosilicon (HP-aptes) with dense Si—O—Si crosslinking networks and large sterically hindered tert-butyl groups was prepared by the sol–gel method. Then, a series of polybenzoxazine composites (PPHP) were prepared from intrinsically low dielectric constant bis-functional benzoxazine monomer (P-aptmds) and HP-aptes. The double crosslinking networks of polybenzoxazine and organosilicon further increased the crosslinking density and decreased the dipole density of composites, which endowed the composites with enhanced low-k properties. When the content of HP-aptes is 30% (mass), the crosslinking density was 2.05×10^-3 mol·cm^-3, while that of PP-aptmds was 3.31×10^-3 mol·cm^-3. In addition, the dielectric constant and dielectric loss of PPHP composite at 1 MHz could reach 2.61 and 0.0056, respectively.

关键词: Polybenzoxazine, Organosilicon, Composite, Dielectric constant

Manlin Yuan, Xin Lu, Xiaoyun Ma, Hao Lin, Angui Lu, Liyan Shao, Zhong Xin. Polybenzoxazine/organosilicon composites with low dielectric constant and dielectric loss[J]. Chinese Journal of Chemical Engineering, 2023, 64(12): 241-249.

Manlin Yuan, Xin Lu, Xiaoyun Ma, Hao Lin, Angui Lu, Liyan Shao, Zhong Xin. Polybenzoxazine/organosilicon composites with low dielectric constant and dielectric loss[J]. 中国化学工程学报, 2023, 64(12): 241-249.

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