秸秆土聚物保温建筑材料工艺及界面结构分析
发布时间：2018-12-07 06:44
【摘要】：为研究开发强度高、耐腐蚀性好的保温建筑材料,以节省建筑能源消耗,拓宽秸秆工业化利用途径,该文将秸秆掺入到土壤聚合物中制备秸秆土聚物,以抗压强度为指标,优选秸秆土聚物的较优工艺,并测定了秸秆土聚物的导热系数,确定其保温性能。用X射线衍射、傅立叶红外光谱以及扫描电镜对秸秆土聚物复合材料的晶相成分、化学键合和微观结构进行了分析。结果表明秸秆土聚物较优工艺配方如下:反应体系中Si O2与Al2O3摩尔比为3.9,Na2O与Si O2摩尔比为0.30,秸秆掺量4%,长度1 mm,水灰比0.10,制备得到的试块置于(20±2)℃、相对湿度为70%±2%的环境中养护,其7 d抗压强度可达54.58 MPa,导热系数为0.0681 W/(m·K)。X射线衍射、傅立叶红外光谱以及扫描电镜分析表明秸秆土壤聚合物为Si,O,Al组成的半晶态,无定形层状结构,与纯土聚物红外特征峰相同,无新化学键生成。秸秆土聚物界面处出现间隙和裂纹,裂纹遇秸秆后转向,产生二次裂纹,形成弱结合界面。初步判断秸秆与土聚物之间没有发生化学结合。研究结果为秸秆的工业资源化利用开辟了一条新途径,也为绿色保温建筑材料的研究提供依据。
[Abstract]:In order to study and develop thermal insulation building materials with high strength and good corrosion resistance in order to save energy consumption of buildings and widen the way of industrialized utilization of straw, straw was mixed into soil polymer to prepare straw soil polymer, and the compressive strength was taken as index. The optimum technology of selecting straw soil polymer was studied. The thermal conductivity of straw soil polymer was measured and its thermal insulation property was determined. The crystal phase composition, chemical bonding and microstructure of the composite were analyzed by X-ray diffraction, Fourier transform infrared spectroscopy and scanning electron microscope. The results showed that the optimum conditions were as follows: the molar ratio of Si O 2 to Al2O3 was 3.9%, the molar ratio of Si O 2 to Si O 2 was 0.30, the content of straw was 4%, the length of 1 mm, was 0.10% of water to cement. The prepared samples were preserved at (20 卤2) 鈩，
本文编号：2366749
[Abstract]:In order to study and develop thermal insulation building materials with high strength and good corrosion resistance in order to save energy consumption of buildings and widen the way of industrialized utilization of straw, straw was mixed into soil polymer to prepare straw soil polymer, and the compressive strength was taken as index. The optimum technology of selecting straw soil polymer was studied. The thermal conductivity of straw soil polymer was measured and its thermal insulation property was determined. The crystal phase composition, chemical bonding and microstructure of the composite were analyzed by X-ray diffraction, Fourier transform infrared spectroscopy and scanning electron microscope. The results showed that the optimum conditions were as follows: the molar ratio of Si O 2 to Al2O3 was 3.9%, the molar ratio of Si O 2 to Si O 2 was 0.30, the content of straw was 4%, the length of 1 mm, was 0.10% of water to cement. The prepared samples were preserved at (20 卤2) 鈩，
本文编号：2366749
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