Laminated composite based on polyester geotextile fibers and polyurethane resin for coating wood structures

Materials Research

Yuri Andrey Olivato Assagra²  Ruy Alberto Pisani Altafim¹  José Francisco Resende Da Silva¹  Heitor Cury Basso²  Francisco Antonio Rocco Lahr¹  Ruy Alberto Corrêa Altafim² 

[1] ,University of São Paulo Department of Electrical Engineering São Carlos SP ,Brazil

关键词: polyurethane resin;    geotextile fibers;    coating layer;    wooden structural elements;   

DOI  :  10.1590/S1516-14392013005000100

来源: SciELO

【 摘 要 】

New environmental laws have restricted the use of hardwood trees in overhead power lines structures, such as, poles and cross-arms, leading companies to seek alternative materials. Reforested wood coated with polymeric resin has been proposed as an environmental friendly solution, with improved electrical properties and protection against external agents, e.g. moisture, ultraviolet radiation and fungi. However, the single thin layer of resin, normally applied on such structures reveal to be inefficient, due to be easily damage during handling. In this paper, we present a composite coating, based on geotextile fibers and polyurethane resin that is suitable for wooden structures. Results obtained from two different tree species (from managed and reforested areas) coated with the composite reveal that the additional layer not only provided a stronger adhesion between wood and ccoating layer but also a further improvement in the electrical properties and better protection against abrasion and moisture.

【 授权许可】

CC BY   
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