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Preparation of waterborne P-N containing epoxy resin curing and its performances

Wei Li (State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, China)
Guilong Xu (State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, China)
Buqin Xu (State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, China)
Yi Wang (State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, China)
Jin Yang (State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, China)
Jian Hu (State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, China)

Pigment & Resin Technology

ISSN: 0369-9420

Article publication date: 5 September 2016

354

Abstract

Purpose

The flammability of epoxy resin is a major disadvantage in applications that require flame resistance. Epoxy monomers and hardeners containing flame-retardant elements are molecularly incorporated in the resin network are expected to exhibit better flame resistance than those borne on an additive approach. In recent years, because of health and environmental regulation, the use of waterborne coatings has received many attentions. However, waterborne epoxy resin curing agent with excellent flame retardancy has been seldom reported. The paper aims to study the preparation of waterborne P-N-containing epoxy resin curing agent and its performances (P-N – phosphorous and nitrogen).

Design/methodology/approach

Waterborne P-N-containing epoxy curing agent was prepared in this study using reactive flame retardant 10-(2,5-dihydroxyphenyl)-9,10-dihydro-9-xa-10-phosphaphenanthrene-10-oxide, liquid epoxy resin, triethylenetetramine and butyl glycidyl ether at the mole ratio of 1.0:2.0:2.0:2.0.

Findings

The results show that the epoxy thermoset from the prepared P-N-containing curing agent presents good flame retardancy and can pass the V-1 rating, and the cured epoxy thermoset film presents excellent performances such as water resistance, adhesion, impact resistance and pencil hardness. This study provides useful suggestions for the application of the water-borne flame retardancy epoxy resins in coating industry.

Research limitations/implications

Each step of products during the preparation of waterborne P-N-containing epoxy curing agent cannot be accurately tested.

Originality/value

This method for synthesis of waterborne P-N-containing epoxy curing agent is novel and could be used for various applications in epoxy coating industry.

Keywords

Acknowledgements

The authors are grateful for the financial support by the Fundamental Research Funds for the Central Universities (2014ZZ0075, 2015ZM030) and the Open Fund of the State Key Lab of Pulp and Paper Engineering (201355).

Citation

Li, W., Xu, G., Xu, B., Wang, Y., Yang, J. and Hu, J. (2016), "Preparation of waterborne P-N containing epoxy resin curing and its performances", Pigment & Resin Technology, Vol. 45 No. 5, pp. 308-312. https://doi.org/10.1108/PRT-11-2014-0103

Publisher

:

Emerald Group Publishing Limited

Copyright © 2016, Emerald Group Publishing Limited

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