铈盐：一种用于苯并恶嗪基涂料的高效固化催化剂。

Cerium Salts: An Efficient Curing Catalyst for Benzoxazine Based Coatings.

作者信息

Zhang Tao, Bonnaud Leïla, Raquez Jean-Marie, Poorteman Marc, Olivier Marjorie, Dubois Philippe

机构信息

Laboratory of Polymeric and Composite Materials, Center of Innovation and Research in Materials and Polymers (CIRMAP), Materia Nova Research Center & University of Mons, 23 Place du Parc, B-7000 Mons, Belgium.

Department of Visual Communication Design, School of Art & Design, Zhejiang Sci-Tech University, Hangzhou 310018, China.

出版信息

Polymers (Basel). 2020 Feb 11;12(2):415. doi: 10.3390/polym12020415.

DOI:10.3390/polym12020415

PMID:32054083

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7077719/

Abstract

The effect of three different cerium salts (Ce(NO).6HO, CeCl.7HO and Ce(OOCCH).5HO) on the ring-opening polymerization (ROP) of a model diamine-based benzoxazine (4EP-pPDA) was investigated. With the incorporation of the cerium salts, the curing temperature of 4EP-pPDA is reduced substantially, and the glass transition temperatures of the resulting networks are increased significantly. The three cerium salts exhibit different catalytic activities, which were analyzed by FT-IR, NMR, and energy-dispersive X-ray (EDX). Ce(NO).6HO was found to exhibit the best catalytic effect, which seems to be related to its better dispersibility within 4EP-pPDA benzoxazine precursors.

摘要

研究了三种不同的铈盐（硝酸铈六水合物、氯化铈七水合物和醋酸铈五水合物）对一种基于二胺的苯并恶嗪模型（4EP-pPDA）的开环聚合（ROP）的影响。随着铈盐的加入，4EP-pPDA的固化温度大幅降低，所得网络的玻璃化转变温度显著提高。通过傅里叶变换红外光谱（FT-IR）、核磁共振（NMR）和能量色散X射线（EDX）分析发现，这三种铈盐表现出不同的催化活性。硝酸铈六水合物表现出最佳的催化效果，这似乎与其在4EP-pPDA苯并恶嗪前体中的更好分散性有关。