Boron-containing Phthalonitrile Resin: Synthesis, Curing Behavior, and Thermal Properties

Shu-Yi Zhan; Yue Han; Yu-Huan Wu; Jiang-Nan Ding; Xiang Liu; Ying Guo; Heng Zhou; Tong Zhao

doi:10.1007/s10118-022-2746-9

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Boron-containing Phthalonitrile Resin: Synthesis, Curing Behavior, and Thermal Properties

RESEARCH ARTICLE | Updated：2022-10-25

- Boron-containing Phthalonitrile Resin: Synthesis, Curing Behavior, and Thermal Properties
- Chinese Journal of Polymer Science Vol. 40, Issue 11, Pages: 1349-1359(2022)
- Affiliations：
  
  a.Key Laboratory of Science and Technology on High-tech Polymer Materials, Institute of Chemistry Chinese Academy of Sciences, Beijing 100190, China
  b.University of Chinese Academy of Sciences, Beijing 100049, China
  c.South China Advanced Institute for Soft Matter Science and Technology, South China University of Technology, Guangzhou 510640, China
- Author bio：
  
  zhouheng@iccas.ac.cn (H.Z.)
  tzhao@iccas.ac.cn (T.Z.)
- Funds：
- DOI：10.1007/s10118-022-2746-9
  CLC：
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Shu-Yi Zhan, Yue Han, Yu-Huan Wu, et al. Boron-containing Phthalonitrile Resin: Synthesis, Curing Behavior, and Thermal Properties. [J]. Chinese Journal of Polymer Science 40(11):1349-1359(2022)
DOI：

Shu-Yi Zhan, Yue Han, Yu-Huan Wu, et al. Boron-containing Phthalonitrile Resin: Synthesis, Curing Behavior, and Thermal Properties. [J]. Chinese Journal of Polymer Science 40(11):1349-1359(2022) DOI： 10.1007/s10118-022-2746-9.

摘要

In this work, a novel boron-containing phthalonitrile monomer was synthesized. This monomer can act as Lewis acid curing agent individually. Two model compounds were used to further understand the Lewis acid curing mechanism. The current boron-containing system exhibited good processability and thermal properties.

Abstract

A novel boron-containing monomer, (4-(3,4-dicyanophenoxy)phenyl)boronic acid (BPhPN) was synthesized and used to promote the curing process of phthalonitrile monomer 1,3-bis(3,4-dicyanophenoxy)benzene (MPN). Differential scanning calorimetry and rheological analysis were used to study the curing behaviors of BPhPN/MPN (namely B-MPN), and results suggested that B-MPN systems have better processibility. FTIR spectra and solid-state ,13,C-NMR exhibited triazine and isoindoline have been formed in the curing process. Boron-containing Lewis acid curing mechanism was preliminarily speculated and verified by two model compounds with different boron chemical environments. The thermogravimetric analysis and dynamic mechanical analysis demonstrated that the cured B-MPN polymers showed excellent thermal stability and heat resistance, which were comparable with conventional catalytic systems for phthalonitrile resins. This study not only presented a novel curing system for phthalonitrile resins, but also shed light on future design of high temperature thermosets.

关键词

Keywords

Curing agentPhthalonitrile resinsThermosetsBoron-containing polymer

references

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