Sustainable and flame-retardant wood coating

A recent work presents sustainable, high-performance, flame-retardant waterborne wood coatings via a phytic acid based green curing agent.

A brush.
The new in waterborne coatings technology could be used as a useful and inexpensive technology that addresses the need to reduce volatile organic compound (VOC) production for improved environmental protection. Image source: TwilightArtPictures - (symbol image).

Developing sustainable, high-performance, and flame-retardant wood coatings is significantly important for effective utilisation of wood. In a recent work, a bio-based flame-retardant curing agent of ammonium hydrogen phytate (AHP) was synthesised by controlling the reaction molar ratio of phytic acid and urea. This synthetic AHP displayed appropriate pH which is beneficial for curing melamine-urea-formaldehyde (MUF) resin aqueous solution. The curing rate could be freely adjusted by changing the weight ratio of AHP to MUF.

Great potential

Compared to the control sample of wood coating prepared by the commercial curing agent of ammonium chloride, except the greatly improved thermal stability and flame retardancy, the resultant wood coating (MP) exhibited comparable Tg, hardness, adhesion, and water resistance.

According to the researchers, their research presents a sustainable, eco-friendly approach to construct a high-performance, flame-retardant wood coating, which has great potential in the wood and furniture industries.

The study has been published in Progress in Organic Coatings, Volume 162, January 2022.

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