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Journal of Thermal Science

热科学学报

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2025 , Vol. 34 >Issue 1: 176 - 187

DOI: https://doi.org/10.1007/s11630-024-2072-3

Experimental Research on a Feasible Building Insulation Material Based Reed in China

  • LIU Tiantian ,
  • PENG Yizhe ,
  • LIU Lifang ,
  • CAI Chenghan ,
  • WANG Shuang ,
  • LI Hongqiang
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  • 1. College of Civil Engineering, Hunan University, Changsha 410082, China
    2. College of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
    3. School of Energy and Power, Jiangsu University of Science and Technology, Zhenjiang 212100, China
    4. National Center for International Research Collaboration in Building Safety and Environment (NCIRCBSE), Hunan University, Changsha 410082, China
    5. Key Laboratory of Building Safety and Energy Efficiency of the Ministry of Education, Hunan University, Changsha 410082, China

网络出版日期: 2025-01-09

基金资助

This research is supported by the National Natural Science Foundation of China (No. 52076070, No. 52008166) and the Natural Science Foundation of Hunan Province (No. 2021JJ30256, No. 2022JJ30139).

版权

Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2024
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Experimental Research on a Feasible Building Insulation Material Based Reed in China

  • LIU Tiantian ,
  • PENG Yizhe ,
  • LIU Lifang ,
  • CAI Chenghan ,
  • WANG Shuang ,
  • LI Hongqiang
Expand
  • 1. College of Civil Engineering, Hunan University, Changsha 410082, China
    2. College of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
    3. School of Energy and Power, Jiangsu University of Science and Technology, Zhenjiang 212100, China
    4. National Center for International Research Collaboration in Building Safety and Environment (NCIRCBSE), Hunan University, Changsha 410082, China
    5. Key Laboratory of Building Safety and Energy Efficiency of the Ministry of Education, Hunan University, Changsha 410082, China

Online published: 2025-01-09

Supported by

This research is supported by the National Natural Science Foundation of China (No. 52076070, No. 52008166) and the Natural Science Foundation of Hunan Province (No. 2021JJ30256, No. 2022JJ30139).

Copyright

Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2024
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摘要

中国丰富的芦苇资源为制备建筑保温材料提供了丰富的原料。将无路可去的芦苇制备成保温材料，满足环境可持续性发展的同时，提高了芦苇的附加值，创造了新的经济收益。原生态生物质表面的疏水性导致粘结成型强度弱、结构不致密等问题，以及表面残留虫卵虫害滋生等问题，本研究以芦苇秸秆为原材料，发泡地质聚合物为粘结剂制备芦苇基建筑保温材料。为改善芦苇秸秆与发泡地质聚合物之间的界面粘合状态，将芦苇秸秆进行表面改性，提出热化学改性方法，即热碳化。同时对不同表面热改性程度的芦苇基建筑保温材料的力学性能、水力学性能，尤其是防火性能、耐候性能等已发表文献中少有的特性参数进行测试，从而更加综合地评估所研究的建筑保温材料性能。当芦苇秸秆的表面热改性条件为250℃（30 min）时，芦苇基建筑保温材料的综合性能最佳，此时材料密度为321.3 kg/m3，抗压强度为0.59 MPa，导热系数为0.101 W/(m.K)，pH为11.27，吸湿率为25.1%。与原生态芦苇基保温材料相比，所研究的材料界面粘合情况得到改善，抗泛碱能力，耐干湿循环能力和防火性能也得到一定提升。该新型材料可以广泛用于传统建筑保温隔热改善以及用于装配式建筑做夹心填料，如制备自保温墙体等场景。

关键词： pre-treatment of reeds; interface adhesion properties; building insulation material based reed; fire resistance performance; weathering resistance performance

本文引用格式

LIU Tiantian , PENG Yizhe , LIU Lifang , CAI Chenghan , WANG Shuang , LI Hongqiang . Experimental Research on a Feasible Building Insulation Material Based Reed in China[J]. 热科学学报, 2025 , 34(1) : 176 -187 . DOI: 10.1007/s11630-024-2072-3

Abstract

The seemingly useless reeds are prepared as thermal insulation materials, which not only meet the requirements of environmental sustainability but also enhance the added value of reeds, creating new economic benefits. The hydrophobicity of raw biomass surfaces leads to problems such as weak bonding strength and non-dense structure in the formed materials, as well as issues related to the residual insect infestations on the surface. In this study, reed straw was used as the raw material, and foamed geopolymer was used as the binder to prepare building insulation materials based reed. To improve the interfacial adhesion performance between reed straw and foamed geopolymer, a thermochemical modification method-thermal carbonization, was proposed. In this study, the mechanical properties and hydraulic properties of the studied materials with different degrees of surface thermal modification were tested, especially the fire resistance performance, and weathering resistance performance rarely found in published literature. When the surface thermal modification condition of reed straw was 250°C (30 min), the comprehensive performance of reed-based building insulation materials was the best, when the studied material density was 321.3 kg/m3; the compressive strength was 0.59 MPa; the thermal conductivity was 0.101 W/(m∙K); the pH was 11.27; the moisture absorption rate was 25.1%, and the compressive strength loss rate in wet-dry cycles was 18.5%. In addition, it had excellent fire resistance performance and weathering resistance performance. This new material can be widely used to improve the thermal insulation of traditional buildings and as sandwich filler in prefabricated buildings, such as preparing insulating walls.

Key words： pre-treatment of reeds; interface adhesion properties; building insulation material based reed; fire resistance performance; weathering resistance performance

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