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Effects of rosin treatment on hygroscopicity, dimensional stability, and pore structure of round bamboo culm

机译：松香处理对圆竹秆吸湿性，尺寸稳定性和孔隙结构的影响

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摘要

Round bamboo culm maintains the natural texture, shape, and mechanical structure of raw bamboo materials compared with modern bamboo engineering materials, which break down bamboo culms into small elements. Promoting the use of round bamboo is an efficient and sophisticated way to utilize bamboo resources. However, the high hygroscopicity and poor dimensional stability are disadvantages that obstruct the utilization of round bamboo culm in construction and building applications. To solve these problem, rosin was used to modify the bamboo culm material in this work. The results show that the weight percentage gain of rosin was 9.98% after 8 h of impregnation. Part of the rosin formed transparent hydrophobic films on the surface of the bamboo culm, and decreased its surface wettability. Moreover, rosin was introduced into internal pores of bamboo where it decreased the porosity and total pore volume of bamboo by 14.42% and 23.81%, respectively. Additionally, the moisture absorption for 144 h at 65% relative humidity decreased by 39.27%, while rosin treatment decreased the swellings of wall thickness and diameter of bamboo culm from oven-dry to water saturation by 42.20% and 25.40%, respectively. (C) 2021 Elsevier Ltd. All rights reserved.
机译：与现代竹材工程材料相比，圆形竹秆维持生竹材料的自然质地，形状和机械结构，将竹秆分成小元素。促进圆竹的使用是利用竹资源的有效和精致的方式。然而，高吸湿性和差的尺寸稳定性是缺点，妨碍圆竹秆在施工和建筑应用中的利用。为了解决这些问题，Rosin用于改变这项工作中的竹秆材料。结果表明，浸渍8小时后松香的重量百分比增量为9.98％。松香的一部分在竹干表面上形成了透明的疏水薄膜，并降低了其表面润湿性。此外，将松香引入竹子内部孔中，在那里分别将竹子和总孔体积降低14.42％和23.81％。另外，在65％相对湿度下的吸湿性144小时降低39.27％，而松香处理将竹干的壁厚和直径从烘箱干燥到水饱和度降低42.20％和25.40％。 （c）2021 elestvier有限公司保留所有权利。

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  • 来源
    《Construction and Building Materials》 |2021年第14期|123037.1-123037.9|共9页
  • 作者

    Su Na; Fang Changhua; Yu Zixuan; Zhou Hui; Wang Xianke; Tang Tong; Zhang Shuqin; Fei Benhua;

  • 作者单位

    Int Ctr Bamboo & Rattan Dept Biomat Beijing 100102 Peoples R China|State Forestry Adm SFA Beijing 100102 Peoples R China|State Forestry Adm Beijing Cobuilt Key Lab Bamboo & Rattan Sci & Tec Beijing 100102 Peoples R China;

    Int Ctr Bamboo & Rattan Dept Biomat Beijing 100102 Peoples R China|State Forestry Adm SFA Beijing 100102 Peoples R China|State Forestry Adm Beijing Cobuilt Key Lab Bamboo & Rattan Sci & Tec Beijing 100102 Peoples R China;

    Int Ctr Bamboo & Rattan Dept Biomat Beijing 100102 Peoples R China|State Forestry Adm SFA Beijing 100102 Peoples R China|State Forestry Adm Beijing Cobuilt Key Lab Bamboo & Rattan Sci & Tec Beijing 100102 Peoples R China;

    Int Ctr Bamboo & Rattan Dept Biomat Beijing 100102 Peoples R China|State Forestry Adm SFA Beijing 100102 Peoples R China|State Forestry Adm Beijing Cobuilt Key Lab Bamboo & Rattan Sci & Tec Beijing 100102 Peoples R China;

    Int Ctr Bamboo & Rattan Dept Biomat Beijing 100102 Peoples R China|State Forestry Adm SFA Beijing 100102 Peoples R China|State Forestry Adm Beijing Cobuilt Key Lab Bamboo & Rattan Sci & Tec Beijing 100102 Peoples R China;

    Qilu Univ Technol Inst Art & Design Jinan 250103 Peoples R China;

    Int Ctr Bamboo & Rattan Dept Biomat Beijing 100102 Peoples R China|State Forestry Adm SFA Beijing 100102 Peoples R China|State Forestry Adm Beijing Cobuilt Key Lab Bamboo & Rattan Sci & Tec Beijing 100102 Peoples R China;

    Int Ctr Bamboo & Rattan Dept Biomat Beijing 100102 Peoples R China|State Forestry Adm SFA Beijing 100102 Peoples R China|State Forestry Adm Beijing Cobuilt Key Lab Bamboo & Rattan Sci & Tec Beijing 100102 Peoples R China;

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

    Round bamboo culm; Rosin impregnation; Hygroscopicity; Dimensional stability; Porosity;

    机译：圆形竹菌;松香浸渍;吸湿性;尺寸稳定性;孔隙率;

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