压差法测试塑料管材氧气透过量的研究

采用一种压差法测试氧气透过量的方法测试了塑料管材的透氧性能,介绍了其测试原理,并对市场上典型的纯塑料管、阻氧管以及实验室自主研发的新型合金阻氧管的透氧性能进行测试,探讨了管材结构对压差法测试结果的影响。结果表明,获得的数据规律性好、重复性高,测试周期较短(仅需2 d),有利于对塑料管材阻氧性能好坏进行快速地定性判断。

Study on Oxygen Permeability of Plastic Pipes Through Manometric Method

In this work,we adopted a manometric method to test the oxygen gas transmission of plastics pipe.The test principle was introduced,and the oxygen permeability of the representative plastic tube,oxygen barrier tube,and new alloy oxygen barrier tube developed by our laboratory were measured.The influence of pipe structure on the test results was discussed.The obtained data were found to have a good regularity,high repeatability,and a short test period as short as only 2 days.This result is helpful to quickly and qualitatively judge the quality of the oxygen resistance of plastic pipes.