Cement mortar with carbon fiber(CFc)and resin-cement mortar with carbon fiber(CFrc)were used as inner and outer cores of smart aggregate with Z shape,respectively,which was used as the basic perception units to prepar...Cement mortar with carbon fiber(CFc)and resin-cement mortar with carbon fiber(CFrc)were used as inner and outer cores of smart aggregate with Z shape,respectively,which was used as the basic perception units to prepare smart concrete aggregate with a mosaic structure(SAMS).The hydroxpropyl methylcellulose(HPMC)was taken into consideration to improve the properties of mortar;by using HPMC,the structure of SAMS was optimized and its mechanical and electrical properties were evaluated.The experimental results show that the toughness of mortar could be improved by the complex that formed by epoxy resin,and the effect of HPMC on the flexibility of CFc was greater than that on the flexibility of CFrc;the feasible designing indicates that the CFc-Z core and CFrc-Z core could be used as inner and outer cores of SAMS.When the proposed dosages of HPMC in inner and outer cores are 0.35wt%and 0.2wt%,respectively,it could give an effective prediction for the damage of concrete during the loading process.展开更多
目的制备印奇果油-羟丙基-β-环糊精包合物。方法采用饱和溶液法制备印奇果油-羟丙基-β-环糊精包合物;采用L9(34)正交设计,优化印奇果油-羟丙基-β-环糊精包合物制备工艺;采用喷雾干燥法将其制备成粉末;采用单因素分析法优化印奇果油-...目的制备印奇果油-羟丙基-β-环糊精包合物。方法采用饱和溶液法制备印奇果油-羟丙基-β-环糊精包合物;采用L9(34)正交设计,优化印奇果油-羟丙基-β-环糊精包合物制备工艺;采用喷雾干燥法将其制备成粉末;采用单因素分析法优化印奇果油-羟丙基-β-环糊精包合物的最佳喷雾干燥工艺。结果以包合率为指标,印奇果油-羟丙基-β-环糊精包合物的最佳制备工艺为A2B1C2,即当包合温度为60℃,搅拌时间为30 min,药液滴加速度为1 m L/min时,包合率最高。按最佳工艺参数进行3次平行试验,平均包合率为36.94%,相对标准偏差(RSD)为1.06%。结论以最佳工艺制备包合物,工艺稳定可行。展开更多
基金Funded by the Natural Science Foundation of Fujian Province(No.2016J01241)the National Natural Science Foundation of China(No.51608212)。
文摘Cement mortar with carbon fiber(CFc)and resin-cement mortar with carbon fiber(CFrc)were used as inner and outer cores of smart aggregate with Z shape,respectively,which was used as the basic perception units to prepare smart concrete aggregate with a mosaic structure(SAMS).The hydroxpropyl methylcellulose(HPMC)was taken into consideration to improve the properties of mortar;by using HPMC,the structure of SAMS was optimized and its mechanical and electrical properties were evaluated.The experimental results show that the toughness of mortar could be improved by the complex that formed by epoxy resin,and the effect of HPMC on the flexibility of CFc was greater than that on the flexibility of CFrc;the feasible designing indicates that the CFc-Z core and CFrc-Z core could be used as inner and outer cores of SAMS.When the proposed dosages of HPMC in inner and outer cores are 0.35wt%and 0.2wt%,respectively,it could give an effective prediction for the damage of concrete during the loading process.
文摘目的制备印奇果油-羟丙基-β-环糊精包合物。方法采用饱和溶液法制备印奇果油-羟丙基-β-环糊精包合物;采用L9(34)正交设计,优化印奇果油-羟丙基-β-环糊精包合物制备工艺;采用喷雾干燥法将其制备成粉末;采用单因素分析法优化印奇果油-羟丙基-β-环糊精包合物的最佳喷雾干燥工艺。结果以包合率为指标,印奇果油-羟丙基-β-环糊精包合物的最佳制备工艺为A2B1C2,即当包合温度为60℃,搅拌时间为30 min,药液滴加速度为1 m L/min时,包合率最高。按最佳工艺参数进行3次平行试验,平均包合率为36.94%,相对标准偏差(RSD)为1.06%。结论以最佳工艺制备包合物,工艺稳定可行。
