Non-woven composites intensification properties for air filters by plasma pre-Treatment

Abstract

The nonwovens use in the automotive industry has increased significantly. Nonwovens for air filters can be changed in a desired direction to have specific properties. The use of non-woven textiles in the automotive industry has the following advantages: it reduces the weight of the vehicle, increases comfort and provides improved insulation, fire retardancy and resistance to water, fuels, extreme temperatures and abrasion. The electrospinning process is one of the nanofibres, two-layer and multilayer composites with their participation obtaining methods. The low frequency plasma surface modification of needle-punched polyethilenthereftalat (PET) nonwoven fibres is good possibility to intensification the process and the rate of increase of the mass of nanolayer regarding to its' hydrophobicity. The plasma physicochemical treatment type allows adhesion change and change of electro physical properties at the expense of new active centres formation that do not exist in the native fibre. In this study, different gases (Ar, O2 and air) and electrical conditions were employed. The surface changes of PET fibres were investigated by cation exchange capacity (CEC) determination and its influence on the mass nanofibres increase rate. Observation revealed the plasma treatment significantly change surface wettability of PET fibres. The effect of caused change on the electrospinning process is analysed.