For adapting to the need of industrialization and improving the properties of materials , the method of mechanical activation has introduced on the basis of traditional calcinations at high temperature . the stardard spinel limn204 is prepared by the mechanical activation - high temperature solid synthesis method . the thermodynamic property , the physical - chemistry performance and the producing techniques of . battery have been studied by means of thermogravimetry ( tg ) , differential scanning calorimetry ( dsc ) , x - ray diffraction ( xrd ) , scanning electric microscopy ( sem ) as well as various electrochemical analysis methods . studies show that synthesis temperature , calcinations time , recipe of raw materials , heat treatment and particle size of products are main factors affecting the performances of limn204 cathode materials . with the increment of synthesis temperature and time , the structure and crystal of products are getting to perfect 随着合成温度和时间的增加，产物的结构和晶型越趋于完善，但在1100得到的产物有烧结和晶粒增大的现象，恒温时间超过24h后对材料的性能影响不是很大； li mn比在0 . 95 1 . 05 2的条件下都可得到标准的尖晶石limn _ 2o _ 4 ，尤其当li mn比为1 . 05 2时，所合成的材料具有较好的电化学性能；通过两段合成法制备的产物性能要比一段合成法法制备的产物性能好，而两段间隔合成法比两段连续合成法处理的材料性能更佳；颗粒的粒度随着球磨时间的延长而减小，比表面昆明理工大学硕士学位论文摘要却增大，粒度小且分布范围窄的材料有利于铿离子的扩散。
The crystalline structure changes of pp induced by pan - milling were characterized by x - ray diffraction and raman spectroscopy . xrd analyses show that when pp was co - milled with uhmwpe , crystal transformation of pp occurred , its crystallinity and crystallite size decreased , whereas , only slight reduction of crystallinity and crystallite size were observed and no crystal transformation was found when pp was co - milled with wtr chips , and amorphization of pp was strongly enhanced by co - milling pp with iron 采用x -射线衍射研究了聚丙烯碾磨粉碎过程微观结构变化， uhmwpe存在下pp发生晶型转变、结晶度降低和晶粒尺寸减小；弹性材料wtr抑制pp塑性变形，碾磨导致分子堆积有序区域膨胀，晶面间距增大，结晶度下降；刚性材料金属铁与pp产生强烈摩擦，加快晶粒细化，晶格破裂导致非晶化。
The more favorable experiment conditions of preparing anatase nanometer tio2 powder are obtained from a lot of data . preparation technology of rutile nanometer tio2 powder is researched on the base of experiment of anatase nanometer tio2 powder . the influences of enclosure dose ' s quantity , preroasting temperatures phase - transition accelerant ' s quantity and calcining intensity and so on on the properties of inclusion body - zntio3 / ti ( oh ) 4 , granule size and properties of rutile nanometer tio2 powder are discussed 在锐钛型纳米tio _ 2粉体的制备基础之上，进一步研究了金红石型纳米tio _ 2粉体的制备工艺，探讨了包覆剂用量、预焙解温度、晶型促进剂量及焙烧温度和保温时间等因素对znco _ 3 / ti ( oh ) _ 4沉淀包覆体性能、金红石型纳米tio _ 2粉体产品的粒度和性能的影响。
Isothermal and non - isothermal crystallization behaviors were also investigated . the results of ft - ir , uv spectrum , waxd and sem indicated that rigid rod polymer polyazomethines were polymerized in the composites . the addition of pam changed the crystallization morphology and apparent crystallinity of the composites , but did not change the basal crystal form 通过对复合材料ft - ir 、紫外光谱、 waxd和sem等测试分析，表明复合材料中存在刚性棒高分子聚甲亚胺，其存在改变了pa - 6的结晶形态和表观结晶度，但尼龙6的晶型并没改变。
In this dissertation , two kinds of polyazomethines ( pam ) / nylon 6 in situ polymerization composites with different rigidity of pam are synthesized through anionic polymerization . the crystalline forms and melting behavior are characterized by waxd , ft - ir and dsc . the results show that a is still the main crystalline form of composites 通过waxd 、 ft - ir及dsc ，对复合材料的晶态结构及熔融行为进行了初步表征，结果表明复合材料的主体仍为晶型， pam的加入并没有改变基体的基本晶型。
