脱硫石膏-棉花秸秆纤维复合墙体材料制备及性能  

Preparation and properties of desulfurization gypsum/cotton stalk fibers composite wall materials

作　　者：黎水平[1] 吴其胜[1] 张长森[1] 黄小军[1] 

机构地区：[1]盐城工学院材料工程学院,江苏盐城224051

出　　处：《新型建筑材料》2013年第1期41-44,共4页New Building Materials

基　　金：江苏省经贸委资助项目(2009-5);住房和城乡建设部科学技术计划项目(2008-K1-7);江苏省新型环保重点实验室开放基金资助项目(AE201111)

摘　　要：以棉花秸秆纤维作为脱硫石膏的增强材料,研究不同棉花秸秆纤维掺量、碱处理浓度对脱硫石膏-棉花秸秆纤维复合墙体材料物理力学性能及保温性能的影响。结果表明,棉花秸秆纤维掺量3%的试样强度较高,抗折和抗压强度分别较空白样提高35.2%和7.0%。棉花秸秆纤维经碱溶液处理后,与脱硫石膏之间胶结能力增强,有利于提高脱硫石膏-棉花秸秆纤维复合墙体材料的物理力学性能,采用8%碱溶液处理的试样抗折和抗压强度分别可增至9.0、16.6 MPa。掺加棉花秸秆纤维能够增加脱硫石膏基复合墙体材料孔隙率,导热系数最低可降至0.105 W(/m.K),保温性能得到提高。Cotton stalk fibers were used as the reinforcement for desulfurization gypsum. The effect of different content of the cotton stalk fibers and concentration of NaOH solution on the physic mechanics and thermal insulation property of desulfurization gypsum/cotton stalk fibers wall materials were investigated. The results showed that when the content of cotton stalk fibers is 3%, the flexural strength and compressive strength of the composites are enhanced by 35.2% and 7.0% respectively compared with the blank sample. The cementing power between desulfurization gypsum and cotton stalk fibers is improved after cotton stalk fibers are treated by NaOH solution. The flexural strength and compressive strength of sample treated by 8% NaOH solution are reached up to 9.0 MPa and 16.6 MPa respectively. The thermal insulation property of desulfurization gypsum/cotton stalk fibers wall materials is great, because the porosity of this sample can be increased by the addition of cotton stalk fibers, and thermal conductivity can be lowest to 0.105 W/（m·K）.

关 键 词：脱硫石膏 棉花秸秆纤维 复合材料 导热系数 

分 类 号：TQ177.318[化学工程—硅酸盐工业] TU551.3[建筑科学—建筑技术科学]