排序方式: 共有10条查询结果,搜索用时 15 毫秒
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制备了交联海藻酸,从静态吸附方面研究了海藻酸交联前后对Cu~(2+)的吸附性能。用三种动力学模型(准一级动力学方程,准二级动力学方程,粒子扩散方程)对不同Cu~(2+)浓度、不同吸附时间的吸附曲线进行分析,探讨了吸附剂的吸附机理。结果表明准二级动力学模型的拟合度较好,海藻酸吸附Cu~(2+)是一个复杂的非均相扩散的化学吸附过程,表面络合和吸附剂内部扩散共同控制着吸附速率。交联后吸附的平衡时间延长,吸附量增大。交联后的海藻酸是一种价格低廉,绿色环保的吸附剂。 相似文献
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聚磷腈的合成与应用研究进展 总被引:3,自引:0,他引:3
对近年来聚磷腈的合成及应用进行了总结和评述,探讨了聚磷腈的研究和开发应用前景。 相似文献
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Zinc alginate fiber was prepared via the self-made wet-spinning mechanism.The energy spectrum showed the fiber contained lots of zinc ion.The surface morphology of fiber was analyzed the by SEM and crystal orientation was showed clearly in the axial.Single fiber tensile test indicated the average tensile strength of 20.36cN/tex and line density of 2.79dtex. 相似文献
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Copolyesters of phosphorus - containing flame - retardant poly(Ethylene Terephthalate) (PET) have been prepared and characterized with the objection of producing an effective, environmentally friendly, nonfugitive alternatives to halogen flame retardant system for practical application. With means of NMR, DSC, DTA/TGA, SEM and LOI, structure, thermal property and flam-mability are investigated which reveal that the flame -retardant PET when copolymerized with 2 - carboxyethyl (phenylphosphinic) acid (CEPP) confers excellent fire retardancy with LOI > 28, broader thermal degradation temperature and increased char formation. 相似文献
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新一代高技术纤维-PBO纤维 总被引:5,自引:0,他引:5
对PBO纤维的合成、纺丝工艺以及结构与性能、应用等进行了系统的论述。 相似文献
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