SEM分析时,没有出现S元素,而在XRD中出现CaSO4，为啥？ 请帮助说明原因，谢谢

SEM所用的是能谱仪，精度不高，只能分析表面几十nm的深度范围，你用SEM做能谱时Ca，O元素都明显打出来了吗，另外你的材料里本身有没有S元素，含量如何，如果含量较少也可能打的不清晰。最后一点，你SEM时样品的衬底用的什么？会不会是衬底峰将S元素的峰掩盖 了

At the same temperature was reviewed in this paper, the speed to the nylon 6 different proportion of calcium sulfate whisker, after twin-screw mixing extruding machine, extrusion, mixed granulation, created by injection spline, Then on spline on tensile strength, bending strength, no gap in the impact strength, impact strength, gap and shall melt index length-diameter ratio and so on a series of performance testing, Low temperature quenching of spline, by SEM get whisker and polymer interface structure model, Finally, we summarize and analysis of data. In theory, the study of modified whisker properties of nylon 6, according to the data structure and material, explore new modified formula. In application, looking for a better, more practical process.

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