通过 Q 型 H-POSS 的自聚合实现具有高热稳定性和低介电常数的交联硅倍半氧烷

IF 4.1 2区化学 Q2 POLYMER SCIENCE

Polymer Pub Date : 2024-11-13 DOI:10.1016/j.polymer.2024.127843

Zaoxia Wen, Liang Xu, Xingyu Liu, Linxuan Fang, Lianbin Wu

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引用次数: 0

摘要

利用 Q 型 H-POSS 作为前体，开发了一种构建交联 Silsesquioxane 的新方法。在 B(C6F5)3 的催化下，Q 型 H-POSS 发生了类似 Piers-Rubinsztajn (P-R) 的反应，生成了含有部分 Si-H 的预聚物。这种聚合物具有很高的热稳定性，5% 失重温度（T5d）为 709 ℃，800 ℃ 时残留率为 92%。此外，固化聚(H-POSS)还具有高透明度，在 400-800 纳米波长范围内的透射率为 90%，并具有良好的介电性能，在 14 千兆赫时的介电常数（Dk）为 2.88。

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Crosslinked Silsesquioxane with High Thermal Stability and Low Dielectric Constant by the Autopolymerization of Q-type H-POSS

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Crosslinked Silsesquioxane with High Thermal Stability and Low Dielectric Constant by the Autopolymerization of Q-type H-POSS

A novel method was developed for constructing cross-linked Silsesquioxane, utilizing Q-type H-POSS as a precursor. The Piers-Rubinsztajn (P-R) like reaction of Q-type H-POSS was catalyzed by B(C₆F₅)₃, resulting in the production of a prepolymer containing partial Si-H. Upon heating at high temperature in air, the prepolymer transformed into an insoluble and infusible cross-linked polymer, named Cured poly(H-POSS). This polymer exhibited high thermostability, with a 5% weight loss temperature (T_5d) of 709 °C and a residue of 92% at 800 °C. Additionally, Cured poly(H-POSS) exhibited high transparency, with a transmittance of 90% in the 400-800 nm wavelength range, and favorable dielectric properties, with a dielectric constant (D_k) of 2.88 at 14 GHz.

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来源期刊

Polymer 化学-高分子科学

CiteScore

7.90

自引率

8.70%

发文量

959

审稿时长

32 days

期刊介绍： Polymer is an interdisciplinary journal dedicated to publishing innovative and significant advances in Polymer Physics, Chemistry and Technology. We welcome submissions on polymer hybrids, nanocomposites, characterisation and self-assembly. Polymer also publishes work on the technological application of polymers in energy and optoelectronics. The main scope is covered but not limited to the following core areas: Polymer Materials Nanocomposites and hybrid nanomaterials Polymer blends, films, fibres, networks and porous materials Physical Characterization Characterisation, modelling and simulation* of molecular and materials properties in bulk, solution, and thin films Polymer Engineering Advanced multiscale processing methods Polymer Synthesis, Modification and Self-assembly Including designer polymer architectures, mechanisms and kinetics, and supramolecular polymerization Technological Applications Polymers for energy generation and storage Polymer membranes for separation technology Polymers for opto- and microelectronics.