Study on the structure and performance of the multi-layer filter materials of automobile oil filter cartridge

摘要

In the commonly used automobile oil filtering materials,having a single layer slructure,also having two layer structure and three layer structure,this paper firstly selected four diverse structural filter materials of automobile oil filter cartridge and then discussed their internal structure and property.Putting to use of SEM to analyze their inner construction and research their physical performance and filtration property.The results indicated that the two layer material possesses smaller pore diameter,higher filtration accuracy and better filtration effiency,however,the three layer material is not in the nature of excellent filtration accuracy,therefore,in the process of exploitation of novel filtration material,the target is not to increase it's layer but realizing how to improve the filter efficiency.The monolayer material is mainly the nonwoven and has ordinary filtration effiency.As a result,in the attempt of developing new filtration materials,the aim needs to focus on the two layer new materials,meanwhile,the other objective is to improve the filtration accuracy to nanometer scale.