Wood surface protection with some titanium, zirconium and manganese compounds
Wood surface protection with some titanium, zirconium and manganese compounds
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DOI：
10.1016/s0141-3910(03)00193-9
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发表时间：
2003-12-01
影响因子：
5.9
通讯作者：
Evans, PD
中科院分区：
文献类型：
--
作者：
Schmalzl, KJ;Evans, PD
放射松薄板用一系列钛、锆和锰化合物进行处理，并暴露在自然风化中。用单板重量和拉伸强度损失来评估化合物的保护效果。氧化锰化合物高锰酸钾和醋酸锰抑制了处理木材单板在风化过程中的重量和拉伸强度的损失。FTIR内反射光谱表明，经两种锰氧化剂处理的单板表面都保留了木质素。一些钛酸酯，包括钛酸四丁酯和钛酸四丙酯，在风化前后都提高了木材单板的拉伸强度，部分原因可能是由于木材中的纤维素络合。大多数钛酸盐和锆酸盐在抑制失重方面效果不是很好，这表明它们不能保护木质素，经风化处理的钛酸盐和锆酸盐单板的FTIR内反射光谱支持这一结论。许多钛酸盐和锆酸盐处理过的木材表面的扫描电子显微镜显示，试剂的水解形成了广泛的沉积物，这些沉积物可能遮挡住了下面的木材基质。皇冠版权所有(C)2003由爱思唯尔有限公司出版。保留所有权利。
Thin radiata pine veneers were treated with a range of titanium, zirconium and manganese compounds and exposed to natural weathering. Veneer weight and tensile strength losses were used to assess the protective efficacy of the compounds. The oxidative manganese compounds potassium permanganate and manganic acetate restricted both weight and tensile strength loss of treated wood veneers during weathering. FTIR internal reflectance spectroscopy indicated that lignin was retained at the surface of weathered veneers treated with both manganese oxidants. A number of titanates including tetrabutyl and tetraisopropyl titanate enhanced the tensile strength of wood veneers both before and after weathering, perhaps in part due to the complexing of cellulose in wood. Most of the titanates and zirconates were not very effective in restricting weight loss, indicating that they were unable to protect lignin and FTIR internal reflectance spectroscopy of weathered titanate and zirconate treated veneers supported this conclusion. SEM on many of the titanate and zirconate treated wood surfaces showed extensive deposits formed by hydrolysis of the reagents and such deposits may shelter the underlying wood matrix. Crown Copyright (C) 2003 Published by Elsevier Ltd. All rights reserved.