排序方式: 共有40条查询结果,搜索用时 0 毫秒
1.
采用自制高岭土/木质素磺酸钠接枝丙烯酸-丙烯酰胺复合高吸水树脂(KLPAAM),测定了其在CuCl2、ZnCl2溶液中的吸附性能;通过FTIR、TG、SEM及吸附动力学方程模拟,对其吸附机理进行了探讨。KLPAAM对Cu2+的吸附量随Cu2+in situ growth of carbon nanotubes (CNTs) at both the basal planes and the edges of GO templates, engendering a minute-level and straightforward route to create 3D hierarchical nanohybrids (GO-CNT). The nanohybrids and GO [1%, 2% and 3%(mass)] were incorporated into polypropylene (PP) using common extrusion compounding amenable to scale up. Unlike the prominent local aggregation of GO in PP composites, GO-CNT was properly exfoliated and dispersed regardless of the loadings. This contributed to multiple improvements in mechanical properties and thermal conductivity for GC/PP, as exemplified by the highest yield strength (38.0 MPa) and thermal conductivity [0.76 W/(m·K)] for GC3, displaying remarkable increase of 20% and 230% compared to those of pure PLA. This work affords elucidation of direct covalent functionalization of 2D nanosheets and property-by-morphology understanding in polymer composites, which may motivate further extension to other polymer composite systems. 相似文献
2.
3.
4.
为了考察煤的孔隙分布对煤低温氧化耗氧速率影响机理,利用孔树模型,建立了煤低温氧化耗氧速率的数学模型,得出煤氧化控制由扩散控制转化为动力控制的临界孔径rc(T),rc(T)随着温度升高呈线性增加趋势,表明温度升高,煤氧化逐渐由反应动力控制.该数学模型可确定不同孔分布煤的主要耗氧控制模式,反映耗氧速率与煤孔分布特征、温度的理论变化关系;当煤的有效孔隙率、孔径分布和微孔比已知时,还可用该数学模型对煤的耗氧速率进行预测. 相似文献
5.