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首页> 外文期刊>Journal of Wood Chemistry and Technology >IMPROVEMENT OF MODIFIED WOOD PROPERTIES WITH ADDITION OF CHESTNUT TANNINS IN LACTIC ACID-BASED TREATMENTS
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IMPROVEMENT OF MODIFIED WOOD PROPERTIES WITH ADDITION OF CHESTNUT TANNINS IN LACTIC ACID-BASED TREATMENTS

机译：在基于乳酸的处理中添加栗子单宁改善改性木材的性能

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摘要

Wood modification treatments based on lactic acid oligomers (OLA) and monomers (LA) enhance beech dimensional stability (up to 70%) and biological resistance (less than 3% weight loss according to EN113). Chestnut wood tannins natural biological activity might improve the modified wood durability with milder curing conditions. Treatment consisted of the impregnation of monomers or oligomers mixtures followed by curing (140 degrees C/160 degrees C for 48h). Tannins addition is almost inconsequential with oligomeric-based treatment but improved the monomeric-based treatment. In this case, modified wood biological resistance and product persistence were increased. OLA impregnated wood cured at 160 degrees C was always the best performing treatment regarding dimensional stability and durability, but the addition of tannins in LA systems conferred promising properties to wood allowing simplification of the modification process.
机译：基于乳酸低聚物（OLA）和单体（LA）的木材改性处理可提高榉木的尺寸稳定性（高达70％）和生物抵抗力（根据EN113，重量损失小于3％）。栗木单宁的自然生物活性可能会在较温和的固化条件下改善改性木材的耐久性。处理包括浸渍单体或低聚物混合物，然后固化（140摄氏度/ 160摄氏度持续48小时）。单宁的添加与基于低聚物的处理几乎无关紧要，但改善了基于单体的处理。在这种情况下，提高了改性木材的生物抗性和产品持久性。就尺寸稳定性和耐久性而言，在160摄氏度下固化的OLA浸渍木材始终是性能最好的处理方法，但是在LA体系中添加单宁酸为木材赋予了令人鼓舞的性能，从而简化了改性过程。

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  • 来源
    《Journal of Wood Chemistry and Technology》 |2019年第3期|124-135|共12页
  • 作者

    Grosse Charlotte; Noel Marion; Thevenon Marie-France; Gerardin Philippe;

  • 作者单位

    Berne Univ Appl Sci, Dept Architecture Wood & Civil Engn, Solothurnstr 102,Postfach 6096, CH-2500 Biel, Switzerland|Univ Lorraine, Fac Sci & Technol, LERMaB, EA 4370, Vandoeuvre Les Nancy, France;

    Berne Univ Appl Sci, Dept Architecture Wood & Civil Engn, Solothurnstr 102,Postfach 6096, CH-2500 Biel, Switzerland;

    CIRAD, UR BIOWooEB, Montpellier 5, France|Univ Montpellier, CIRAD, BIOWooEB, Montpellier, France;

    Univ Lorraine, Fac Sci & Technol, LERMaB, EA 4370, Vandoeuvre Les Nancy, France;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    beech; chemical modification; lactic acid; optimization; chestnut tannins;

    机译：山毛榉;化学修饰;乳酸;优化;栗单宁;

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