PTFE (polytetrafluoroethylene) composite filtering material and its manufacturing method
A composite filtration, PTFE technology, applied in filtration separation, separation methods, chemical instruments and methods, etc., can solve the problems of not meeting the requirements of smoke and dust filtration in special working conditions, poor oxidation resistance, poor chemical resistance, etc. The effect of high precision requirements, low running resistance, high tensile strength and corrosion resistance
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Embodiment 1
[0021] 1. The ultra-fine glass fiber yarn is made into 208tex glass fiber sewing through desolvation, merging, twisting and other processes; the sewing thread is made into high-strength and temperature-resistant sewing thread through PTFE emulsion impregnation, drying, sintering and other processes.
[0022] 2. Warp the above sewing thread, adopt rapier loom and plain weave process, and weave it into 280g / m 2 The sewing thread base fabric is processed; the advanced one-time warping process is adopted during warping to ensure consistent tension of the yarn.
[0023] 3. Needling the glass fiber on both sides of the above-mentioned sewing thread base cloth to form a glass fiber layer.
[0024] 4. Acupuncture PTFE short fibers on the surface of the basic dust-facing surface of the above-mentioned needled sewing thread to make 600g / m 2 PTFE+glass fiber composite filter material.
[0025] 5. The composite filter material is impregnated with polytetrafluoroethylene treatment soluti...
Embodiment 2
[0032] 1. The ultra-fine glass fiber yarn is made into 208tex glass fiber sewing thread through desolvation, merging, twisting and other processes; the sewing thread is made into high-strength and temperature-resistant sewing thread through PTFE emulsion impregnation treatment, drying, sintering and other processes .
[0033] 2. Warp the above sewing thread, adopt rapier loom and plain weave process, and weave it into 260g / m 2 Handle the sewing thread base fabric. The advanced one-step warping process is adopted during warping to ensure consistent yarn tension.
[0034] 3. Needling the glass fiber on both sides of the above-mentioned sewing thread base cloth to form a glass fiber layer.
[0035] 4. Acupuncture PTFE short fibers on the surface of the basic dust-facing surface of the above-mentioned needled sewing thread to make 550g / m 2 PTFE+glass fiber composite filter material.
[0036] 5. The above composite filter material is impregnated with polytetrafluoroethylene mix...
Embodiment 3
[0043] 1. The ultra-fine glass fiber yarn is made into 208tex glass fiber sewing thread through desolvation, merging, twisting and other processes; the sewing thread is made into high-strength and temperature-resistant sewing thread through PTFE emulsion impregnation treatment, drying, sintering and other processes .
[0044] 2. Warp the above sewing thread, adopt rapier loom and plain weave process, and weave it into 420g / m 2 Handle the sewing thread base fabric. The advanced one-step warping process is adopted during warping to ensure consistent yarn tension.
[0045] 3. Needling the glass fiber on both sides of the above-mentioned sewing thread base cloth to form a glass fiber layer.
[0046] 4. Make the surface spunlace PTFE fiber of the basic dust-facing surface of the above-mentioned needled sewing thread into 750g / m 2 PTFE+glass fiber composite filter material.
[0047] 5. The above composite filter material is impregnated with polytetrafluoroethylene mixed solution...
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