Effect On The Performances Of Glass Fiber/Eptfe Film Filter By Modification

Glass Fiber/PTFE high-temperature hot-pressing membrane filter material is the development direction of the high temperature filter materials, which is a new filter material that on the surface of the glass fiber fabric composite PTFE film (porous PTFE film), which include the advantages of the glass fiber high temperature resistance, corrosion resistance, high strength, low elongation and the PTFE film surface is smooth, water-repellent, breathable, easy cleaning, and good chemical stability, so it is the upgrading product of the environmental protection industry. Because of Glass fiber and PTFE themselves'special nature, in order to make them together perfectly, them should be treated respectively.This paper focuses on low-temperature plasma processing and subsequent acrylic grafted to ePTFE membrane surface modification, influence on the performance of the whole at three, this paper firstly probes the plasma processing process to adopt different influence on the performance of the ePTFE membrane surface respectively, using the static contact Angle testing, XPS, SEM, AFM and T word stripping test means testing on film hydrophilicity and bonding was analyzed, it is concluded that the optimum process conditions plasma processing. Secondly by plasma processing after the film, the subsequent grafted on acrylic modified to further improve and stable membrane surface of hydrophilicity, also used above test means of the thin films performance analysis, finally come to change the optimization of acrylic grafted process conditions. Finally different hot-pressing process conditions on coated compound their influence on the performance of the filter material, mainly studies the permeability and the influence of coated fastness, inspects the temperature, pressure and tension on the influence of hot-pressing coated filter material, using the orthogonal design method to analyze the test results, it is concluded that the compound technology optimization hot-pressing.Summarize appeal research results, low-temperature plasma treatment on the surface modification of ePTFE film has certain timeliness and modification effect not significant, so by plasma processing after the film must follow-up for acrylic grafted, so as to further improve and stable ePTFE film effect of surface modification. In hot pressing the composite technique studies, found that tension on the performance of the filter material coated biggest influence, followed by pressure, finally is temperature. Therefore in practical production must undertake strict control of tension, in order to ensure the performance of coated filter material.