Selected Perspective Methods of Research of Barrier materials Resistance against Permeability of under interest Toxic Substances
Journal of Defense Management · 2011
-2 ) penetration is signalized with the first visible blue spot which has an average of 1 mm. Testing is very simple and there in quite no need to use complicated devices. Because the testing is done with real CWA reached results are representative and inform about real tested materials protective properties in face of CWA. During this measurement is necessary to catch the first moment of tested chemical compound penetration on an under-side of tested material which is a basic disadvantage. It is very difficult from the point of view observers psychical condition. Moreover, it is significant to detach minimally one person from a CCs unit organizational structure for permanent observation of chemical compound penetration which can decrease overall CCs unit operational capabilities. For testing of constructive materials resistance within TICs the equipment of PIEZOTEST has been developed and experimentally used. It is a piezoelectric device, which has a sensor made from quartz. This one works as a quartz crystal microbalance, so called QCM detector. A thin polymer layer is coated on the detector. In this layer study both CWAs and Toxic Industrial Materials (TICs) permeated through study polymer into an area of the QCM detector material are caught. The detector is able to measure weight changes very sensitively namely with nanogram exactness. The weight additions of pollutants in a detector polymer layer reveals piezoelectric crystal working frequency grow which is evaluated as an objective quantity. After recounting of QCM detector working frequency on particular concentration enables to construct dependence of that concentration on time. After that it is possible read the value of breakthrough time for the tested chemical compound. After finishing a particular measurement there are a lot of possibilities how to assess data. You can either simply put it into a software enables you to draw a chart or to use a more sophisticated software to evaluate under interest concentrations. In order to answer a question mentioned above there are some advantages of QCM detection. Among the most important one belongs to: