Studies On Wettability And Adhesion Of The Substrates Of Flexible Lamiinated Fabrics

Based on the macromolecule interface and the surface chemical physics and the textile materialscience, wettability and adhesion of the substrates (textiles and films) of flexible laminated fabricswere analyzed and tested by applying the surface treatment technique of atmospheric corona plasmaand the bonding process of hot melt adhesives and the surface analysis method (including:classicaltechnique-the measure of surface tension, surface energy, contact angle, surface roughness, peelingstrength, etc., modern technique - Environment Scanning Electron Microscope ESEM, AtomicForce Microscopy AFM, Attenuated Total Reflection Spectra FTIR/ATR, X-ray PhotoelectronSpectroscopy XPS, etc.; chemical analysis - determination of peroxides formed on the corona-discharged materials). The profoundly theoretical analysis of wettability and adhesion and of thedifferent corona-discharged materials, and an ageing model of corona plasma-treated materialreacting to their environment have been put forward. The experimental results showed: the theoreticalanalysis and the ageing model is correct. The changed surface roughness size (below 100nm) wasobserved on the surface of corona plasma-treated polyester material by AFM in terms of surfacedimensions. The phenomena that the contact angle don't changed when the microcosmic surfaceroughness is changed has been explained successfully by introducing the surface roughness stochasticfunction W (x, y). New concepts of surface smoothness of fabric and the dot enlarge quantity ofbonding are defined. It has been indicated through weave analysis and testing that the weavethickness has distinct effect on fabric smoothness, wetting, the dot enlarges quantity of bonding,peeling strength, etc. And also, besides the weave thickness, the fineness of warp and weft and boththeir densities influence the wettability and the adhesion of fabric was analyzed with clusteringmethod. The best condition of the glueing is theoretically analyzed by the constant k. The deviationcaused by the porous structure of the fabric will be taken into account by using a Jens equation as themechanical equilibrium condition, and obtaining the corrected contact angle of the nonwetting liquidson textile material is possible.