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发明公开
CN110470686A 一种聚乙烯膜隔离的XRFS分析用样片的压片方法 有权

一种聚乙烯膜隔离的XRFS分析用样片的压片方法
摘要：
本发明涉及一种聚乙烯膜隔离的XRFS分析用样片的压片方法。其技术方案是：将2.5～3.5g工业硼酸置于XRFS分析用压片机装料腔的底部，铺平，即得衬底层；按试样粉末∶结合剂的质量比为100∶(0.3～3)，将所述试样粉末和所述结合剂混合均匀，得到混合粉；将衬托膜平铺在所述衬底层上，然后将0.5～3g所述混合粉或0.5～3g所述试样粉末均匀地铺洒在衬托膜上，用样勺抹平；所述衬托膜的直径d1＝d0-(3～5)mm，厚度为0.1～0.3mm；其中：d0表示压片机装料腔的直径，mm；将聚乙烯膜覆盖于XRFS分析用压片机压头的工作面上，加压，保压，脱模，得到聚乙烯膜隔离的XRFS分析用样片。本发明具有效率高、成片率高和测量误差小的特点。
摘要（英）：

The invention relates to a tabletting method of a sample piece for polyethylene film-isolated XRFS analysis. The tabletting method comprises the steps of placing 2.5-3.5g industrial boric acid at thebottom of a loading cavity of a tabletting machine for XRFS analysis, and laying to obtain a substrate layer; uniformly mixing sample powder and a binding agent according to a mass ratio of the samplepowder and the binding agent being 100:(0.3-3) to obtain mixed powder; laying a support film on the substrate layer, uniformly laying 0.5-3g mixed powder or 0.5-3g sample powder on the support film,and floating with a sample spoon, wherein the diameter d1 of the support film is equal to d0-(3-5) millimeters, the thickness is 0.1-0.3 millimeters, and d0 expresses a diameter (millimeter) of the loading cavity of the tabletting machine; and covering a polyethylene film on a working surface of a press head of the tabletting machine for XRFS analysis, and performing pressurization, pressure preservation and demolding to obtain the polyethylene film-isolated sample piece for XRFS analysis. The tabletting method has the characteristics of high efficiency, high film formation efficiency and small measurement error.

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