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Determination of the Effect of Magnesium Hydrophosphate on the Physical-Rheological and Chemical-Colloidal Properties of Aluminosilicate-Based Flame Retardant Paints

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Abstract:

The effect of magnesium hydrophosphate on rheokinetic, chemical-colloidal and flame retardant properties of flame retardant aluminosilicate paints for wood has been investigated. It is shown that the introduction of magnesium hydrophosphate in the paint composition in the amount of 1-1.5% allows to stabilize the change of dynamic viscosity from 164500 to 120000 cP in the range of speeds from 0.35 to 1 RPM, as well as to provide wettability (s=0. 659-0.6603) and stability of spread ability (k=-43.48 and k=- 43.65) of the paint on pine substrate, which corresponds to the criterion requirements. According to the data of fire tests it was found that modification of aluminosilicate bases of paints with magnesium hydrophosphate in the amount of 1-1.5% puts them in the category of difficult combustible and difficult to ignite, the temperature of flue gases did not exceed the critical value (<260С), mass loss did not exceed 5.4-7.2%, which corresponds to the I group of flammability G1 according to the standard. According to the shear force data (SS=24.95 to 176.45 dynes/cm2 and SS=23.18 to 172.4 dynes/cm2) the investigated formulations can be applied on wooden surfaces by air spraying with a screw paint feed.

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Periodical:

Defect and Diffusion Forum (Volume 438)

Pages:

139-145

DOI:

https://doi.org/10.4028/p-8Nqof0

Citation:

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Online since:

February 2025

Authors:

Tetiana Kurska*, Nataliia Grygorenko

Keywords:

Alkaline Aluminosilicate Paint, Chemical-Colloidal, Fire Protection, Flammability, Magnesium Hydrophosphate, Rheological Properties, Wood

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