公开(公告)号：US6082174A

公开(公告)日：2000-07-04

申请号：US132630

申请日：1998-08-11

申请人： Charles E. Lee ,  John D. Della-Santina

发明人： Charles E. Lee ,  John D. Della-Santina

IPC分类号： G01N7/14 ,  G01N33/02 ,  G01N33/15 ,  G01N33/38 ,  G01N37/00

CPC分类号： G01N7/14 ,  G01N33/383

摘要： An entrapped gas measuring apparatus includes a reservoir housing with a reservoir which is adapted to receive a material sample and to expand according to an expansion of the material sample when a negative pressure is applied externally to the reservoir. A parameter indicating the change in volume of the reservoir during the expansion, such as the actual change of volume of the reservoir or a change in position of a moveable wall which at least in part defines the reservoir, is detected by a detector. A processor coupled to the detector is used to determine the amount of entrapped gas based upon the detected parameter. The amount of entrapped gas determined by the processor may be the percent volume of the entrapped gas in relation to the overall volume of the sample, or may be the actual volume of the entrapped gas in the sample. Based at least in-part upon the measured amount of entrapped gas within the sample, the processor is further adapted to determine at least one of: percent volume of the substrate in the sample in relation to the overall volume of the sample; actual volume of the substrate in the sample; or density of the sample or substrate within the sample. The entrapped gas measuring apparatus may be used to produce a material having a known amount of entrapped gas by: making a first material according to a first method and which has a first amount of entrapped gas; applying a negative pressure to the sample such that the sample expands from a first volume to a second volume; detecting a parameter which is indicative of the change of sample volume under the applied negative pressure; comparing the detected parameter with a predetermined range for the parameter; and, if the detected parameter is not within the predetermined range, making a second material according to a second method which has a second amount of entrapped gas that is within the predetermined range.

摘要翻译： 夹带式气体测量装置包括具有储存器的储存器壳体，该储存器适于接收材料样品并且当负压在外部施加到储存器时根据材料样品的膨胀而膨胀。 指示在膨胀期间储存器体积变化的参数，例如储存器的体积的实际变化或至少部分限定储存器的可移动壁的位置变化，由检测器检测。 耦合到检测器的处理器用于基于检测到的参数来确定捕获气体的量。 由处理器确定的夹带气体的量可以是夹带气体相对于样品的总体积的百分比体积，或可以是样品中截留的气体的实际体积。 至少部分地基于所测量的样品中捕获的气体的量，所述处理器还适于确定以下至少一个：相对于所述样品的总体积，所述样品中的所述底物的体积百分比; 样品中基材的实际体积; 或样品中的样品或底物的密度。 包埋气体测量装置可以用于通过以下方式制造具有已知量的截留气体的材料：通过以下方式制备第一种材料：第一种方法并具有第一量的截留气体; 向样品施加负压使得样品从第一体积膨胀到第二体积; 检测在施加的负压下指示样品体积变化的参数; 将检测到的参数与参数的预定范围进行比较; 并且如果检测到的参数不在预定范围内，则根据第二种方法制造第二种材料，该第二种方法具有在预定范围内的第二量的截留气体。