以小量程压差法仪器测定保鲜膜气体透过率的方法研究  

Determination of Gas Transmission of Plastic Wrap by Small Range Differential-pressure Instrument

作　　者：刘山生[1] 袁威[1] 

机构地区：[1]北京工商大学轻工业塑料加工应用塑料研究所,国家塑料制品质量监督检验中心(北京),北京100048

出　　处：《中国塑料》2012年第11期107-109,共3页China Plastics

摘　　要：通过对保鲜膜多层叠加测定的气体透过率与薄膜叠加层数关系的研究,获得了气体透过率Q与试样叠加层数N的函数关系,从而可用多层叠加法测定的结果来导出单层薄膜的气体透过率,能获得较准确的测试结果,也拓展了压差法仪器的测量量程范围。The instrument＇s detecting range was not accurate enough for detecting the gas- transmission of single layer of plastic wrap when using differential-pressure method to detect the gas-transmission. We detected the gas-transmission of multilayer plastic wrap and found a relationship of the gas-transmission and the layers of plastic wrap. Thus we could get accurate test results and expand the detection range of the instrument by use the relationship.

关 键 词：气体透过率 压差法 保鲜膜 多层叠加法 

分 类 号：TQ320.77[化学工程—合成树脂塑料工业]