4.5 Article

Preparation and Study on Nitrogen- and Phosphorus- Containing Fire Resistant Coatings for Wood by UV-Cured Methods

Journal

FRONTIERS IN MATERIALS
Volume 9, Issue -, Pages -

Publisher

FRONTIERS MEDIA SA
DOI: 10.3389/fmats.2022.851754

Keywords

wood; synergistic effect; UV-cured; fire resistance; coatings

Funding

  1. National Key Research & Development (R&D) Plan of China [2020YFC1522800]
  2. Young Scientist Training Program of USTC, USTC Tang Scholar [KY2320000018]

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Wood, widely used for its biodegradability and other properties, has limited applications due to its flammability. To improve its fire resistance, researchers developed a fireproof coating using a synthesized phosphate acrylate monomer and melamine acrylic ester. Tests showed that when wood was coated with a composite of 33.3% PGMA and 66.7% MAAR, it exhibited significant improvement in fire resistance and smoke suppression.
Wood has been widely used since ancient times due to its biodegradability, good elasticity, impact resistance, and easy availability. However, the flammability of wood has vastly limited its applications and the fire hazard of wood has cost a great loss of life and property. Thus, it is important to improve the fire resistance of wood. Here, we used a phosphate acrylate monomer (PGMA) which was synthesized with phosphoric acid and glycidyl methacrylate by ring-opening reaction and melamine acrylic ester (MAAR) to make up a series of fireproof coatings with different proportions, and the fire resistance of wood has been investigated using the limiting oxygen index (LOI) test, back temperature test, and cone calorimeter test. When the wood was coated with the composite of 33.3% PGMA and 66.7% MAAR, the total heat release value decreased from 39.0 to 38.2 MJ/m(2), and the total smoke release value decreased from 622 to 512 m(2)/m(2), showing a remarkable improvement in fire resistance and smoke suppression. Thus, this easily prepared, cheap, and effective flame retardant coating can promote a wider application of wood.

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