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Abstract <p>It is possible to significantly increase the strength and fire-resistant properties of wood via its impregnation with fire retardants. The impregnation of wood with fire retardants is used widely, but there are only a few industrial technologies applied mainly to produce machine-building parts, masts, sleepers, etc. Fire-retarded wood to obtain joinery and construction products and glued structures is of greatest interest, because the demand for fire-protective materials and products is constantly increasing. An FA-3 fire retardant based on oxyethylidenediphosphonic acid and monoethanolamine is proposed to produce fire-resistant wood materials (glued). When monoethanolamine interacts with oxyethylidenediphosphonic acid, a reaction product is a water-soluble crystalline triple amine salt. The advantage of the proposed fire retardant is that it is a member of the class of foam-forming fire-retardant compositions. Low-molecular gaseous substances are formed under high-temperature conditions, and this process leads to intensive foaming and the formation of a fire-protective layer that prevents the effects of open fire and thermal radiation on the upper layers of wood. The developed fire-protective composition provides to use industrially available components, which opens up wide opportunities for its implementation.</p>

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A Study of the Physical and Mechanical Properties of Modified Fire-Retardant Wood Materials

  • 期刊论文

  • 发表日期：

    2025年9月17日

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  • N. G. Kolesov,
  • G. S. Varankina,
  • A. B. Shishlyannikova,
  • D. S. Rusakov

摘要

Abstract

It is possible to significantly increase the strength and fire-resistant properties of wood via its impregnation with fire retardants. The impregnation of wood with fire retardants is used widely, but there are only a few industrial technologies applied mainly to produce machine-building parts, masts, sleepers, etc. Fire-retarded wood to obtain joinery and construction products and glued structures is of greatest interest, because the demand for fire-protective materials and products is constantly increasing. An FA-3 fire retardant based on oxyethylidenediphosphonic acid and monoethanolamine is proposed to produce fire-resistant wood materials (glued). When monoethanolamine interacts with oxyethylidenediphosphonic acid, a reaction product is a water-soluble crystalline triple amine salt. The advantage of the proposed fire retardant is that it is a member of the class of foam-forming fire-retardant compositions. Low-molecular gaseous substances are formed under high-temperature conditions, and this process leads to intensive foaming and the formation of a fire-protective layer that prevents the effects of open fire and thermal radiation on the upper layers of wood. The developed fire-protective composition provides to use industrially available components, which opens up wide opportunities for its implementation.