期刊论文

中文

中南林业科技大学学报

1673-923X

2024

44

02

174-183

10.14067/j.cnki.1673-923x.2024.02.019

32171882:国家自然科学基金 2021RC4062:湖南省科技创新团队项目 20K143:湖南省教育厅科学研究项目

本校为第一机构

[目的]木纤维增强石膏基复合材料的耐水性和韧性较差,限制了其在建筑领域进一步的发展,针对此材料上述 2 种缺点开展木纤维增强石膏基复合材料的耐水增韧改性研究,扩展石膏基复合材料的应用领域,提高其经济效益.[方法]以硅酸盐水泥为无机改性剂、聚乙烯醇溶液(PVA)为增韧剂,探究两者协同对木纤维增强石膏基复合材料力学性能和耐水性能的影响,通过X-射线衍射(XRD)、傅立叶红外光谱(FT-IR)和扫描电子显微镜(SEM)对复合材料的微观结构进行了表征.[结果]硅酸盐水泥和PVA在复合材料中产生了协同作用,可以弥补单掺水泥强度低和单掺PVA耐水性差的缺点.复合材料抗折强度和抗压强度分别为5.56和10.01 MPa...

[Objective]The poor water resistance and toughness of wood fiber-reinforced gypsum-based composites limit their further development,and the water resistance and toughening modification of wood fiber-reinforced gypsum-based composites were carried out for the above two defects of this material to improve the application fields and economic benefits of gypsum-based composites.[Method]The effect of silicate cement as inorganic modifier and polyvinyl alcohol solution(PVA)as toughening agent was investigated on the mechanical properties and water resistance of wood fiber-reinforced gypsum-based com...