棉秸秆纤维增强脱硫石膏复合材料研究  

Research on the cotton stalk fiber reinforced gypsum composite material

作　　者：李扬涛 马玉薇[1] 李刚[1] 蓝明菊[1] 邢海峰[1] 杨文[1] 邓智中[1] 张伟杰[1] 卫云飞[1] 

机构地区：[1]石河子大学水利建筑工程学院,新疆石河子832003

出　　处：《新型建筑材料》2018年第3期20-22,63,共4页New Building Materials

基　　金：兵团重大科技项目(2016JB02);大学生创新计划项目(201710759043);石河子大学成果转化与技术推广计划项目(CGZH201708)

摘　　要：将棉秸秆纤维掺入脱硫石膏中制备复合材料,研究棉秸秆纤维掺入方法及掺量对脱硫石膏复合材料性能的影响。结果表明,当采用纤维后掺入法、棉秸秆纤维掺量为0.2%时,脱硫石膏的抗折和抗压强度分别为4.42、15.5 MPa;将棉秸秆纤维经5%Na OH溶液浸泡22 h处理后,脱硫石膏的抗折和抗压强度分别为4.88、17.9 MPa,较未经碱处理的纤维增强试件分别提高了10.40%和15.48%;脱硫石膏的导热系数为0.2119 W/(m·K),较未掺纤维的试件降低了9.79%。Cotton stalk fiber was added into the FGD gypsum to prepare composite material. The effects of cotton stalk fiber addition method and dosage on the performance of FGD gypsum composites are studied. The results show that：when the dosage of cotton stalk fibers is 0.2%,the flexural strength and compressive strength of FGD gypsum are 4.42 MPa and 15.5 MPa respectively. When the cotton fiber immersed in 5% NaOH solution for 22 h is added,the flexural strength and compressive strength of FGD gypsum are 4.88 MPa and 17.9 MPa respectively, enhanced by 10.40% and 15.48% compared to the unmodified specimen;the thermal conductivity of FGD gypsum is 0.2119 W/（m K）, decreased by 9.79% compared with the one without fiber.

关 键 词：脱硫石膏 棉秸秆纤维:碱溶液处理 力学性能 

分 类 号：TU526[建筑科学—建筑技术科学] TQ177.378.6[化学工程—硅酸盐工业]