Open Access

ARTICLE

A study on Flame-retardancy Property of UV Curable Epoxy Coating for Wooden Surfaces using Boron Diluent and Phosphorus Based Initiator

RAJKUMAR SINGH RAWAT^1,2, MEENU TALWAR^1,*, RAJENDRA KUMAR DIWAN², AJAY KUMAR TYAGI¹

1 Shriram Institute for Industrial Research, 19 University Road, Delhi – 110007, India.
2 AIAS, Amity University Uttar Pradesh, Sector-125, Noida-201301(U.P.), India.

* Corresponding Author: e-mail:

Journal of Polymer Materials 2021, 38(3-4), 281-294. https://doi.org/10.32381/JPM.2021.38.3-4.9

Abstract

In the present paper,boron based diluent was synthesized and incorporated in to a Ultraviolet (UV) radiation curable epoxy coating composition comprising of phosphorus based initiator (Trimethylbenzoyl diphenyl phosphine oxide) for enhancing its flame retardant property. The boron based diluent was synthesized by thermal polymerization technique. The presence of boron and phosphorus on the coating surface was confirmed by Energy Dispersive X-Ray (EDX) and X-ray photoelectron spectroscopy (XPS) techniques and functionality was determination by Fourier Transform Infra-Red (FTIR) and proton/boron NMR spectroscopy technique. The flame retardency property of the coating composition was confirmed by determining limiting oxygen index,vertical burning test, rate of burning. Results revealed that the incorporation of boron diluent increases the Limiting Oxygen Index value from 21% to 33% and decreases the rate of burning from 58 to 6 seconds. The char yield confirms the self-extinguishing property of the coating system.

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