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<p>Naturally lightweight mass transition vehicles need a sophisticated high strength, lightweight structural materials for carriage floors. In this widespread study, wood veneers have been used as traditional reinforcing agent as well as in order to extract the specific quality of the individual matrix material, the concept of interpenetrating polymer networks (IPNs) have been adopted in this specific work, by meticulously blending the commonly and conventionally used melamine urea formaldehyde (MUF) along with the appropriate proportionate of polyurethane such as 0%, 4%, 7%, 12%, 16% and 20% wt%. As well, to thoroughly analyze the compatibility of the formed wood veneer reinforced plywood IPN composites, tests like static bending strength (MOR), internal bonding, screw holding strength, dynamic mechanical analysis (DMA), water absorption, thickness swelling, thermal and sound insulation performance of the composites have been systematically carried out as per EN standards. Moreover, test results revealed that, depends upon blending of PU, properties like strain rate (elongation at break), internal boding, water resistance capability, and sound insulation performance have markedly increases by marginally forfeiting the MOE, screw holding strength and thermal resistance. As a final point, appropriate proportion of PU blending have shown significant advances in distinguished test environments for better employment of the IPN plywood composites in moderate strength withstanding areas such as high impact, sound insulation subjected flooring and hygrothermal applications.</p>

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A comprehensive study on the influence of polyurethane blending in melamine-urea–formaldehyde-based plywood composites: an interpenetrating polymer network (IPN) approach

  • 期刊论文

  • 发表日期：

    2025年8月3日

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  • Amit Kumar,
  • K. R. Vijaya Kumar,
  • G. Suresh,
  • R. Vezhavendhan,
  • P. Chandramohan,
  • R. Saranya,
  • G. Rathinasabapathi

摘要

Naturally lightweight mass transition vehicles need a sophisticated high strength, lightweight structural materials for carriage floors. In this widespread study, wood veneers have been used as traditional reinforcing agent as well as in order to extract the specific quality of the individual matrix material, the concept of interpenetrating polymer networks (IPNs) have been adopted in this specific work, by meticulously blending the commonly and conventionally used melamine urea formaldehyde (MUF) along with the appropriate proportionate of polyurethane such as 0%, 4%, 7%, 12%, 16% and 20% wt%. As well, to thoroughly analyze the compatibility of the formed wood veneer reinforced plywood IPN composites, tests like static bending strength (MOR), internal bonding, screw holding strength, dynamic mechanical analysis (DMA), water absorption, thickness swelling, thermal and sound insulation performance of the composites have been systematically carried out as per EN standards. Moreover, test results revealed that, depends upon blending of PU, properties like strain rate (elongation at break), internal boding, water resistance capability, and sound insulation performance have markedly increases by marginally forfeiting the MOE, screw holding strength and thermal resistance. As a final point, appropriate proportion of PU blending have shown significant advances in distinguished test environments for better employment of the IPN plywood composites in moderate strength withstanding areas such as high impact, sound insulation subjected flooring and hygrothermal applications.