Polyfluortetraethylene fiber filter material and preparation method thereof
A polytetrafluoroethylene and fiber filter technology, which is applied in the field of high-temperature filter materials and its preparation, can solve the problems of poor working conditions of incinerators, complex components, and inability to meet the requirements of smoke and dust filtration.
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Embodiment 1
[0015] Using polytetrafluoroethylene short fibers, the performance indicators are: length 51mm; fineness 3D; crimp 12 pieces / 25mm; tensile strength 2.7cn / dtex; heat shrinkage rate <1.5%. Spread the loose bales of raw materials evenly, spray the aqueous solution containing 2% electrostatic agent and let it stand for 24 hours before putting into production, opening, semi-worsted carding, drawing, woolen, fine spinning, twisting, warping, hedging, Weaving, impregnating treatment, coating treatment, inspection into packages.
[0016] The parallel twisting process is combined into 156tex yarn, and with a shuttleless loom, the polytetrafluoroethylene fiber filter cloth of 650g / m2 is woven into a 3 / 5 weft double weaving process. The filter cloth is impregnated, and the impregnation solution is a polytetrafluoroethylene solution, and the proportion is:
[0017] PTFE
40%
polyphenylene
20%
1%
water
margin
[0018] The su...
Embodiment 2
[0021] Using polytetrafluoroethylene short fibers, the performance indicators are: length 51mm; fineness 3D; crimp 12 pieces / 25mm; tensile strength 2.7cn / dtex; heat shrinkage rate <1.5%. Spread the loose bales of raw materials evenly, spray the aqueous solution containing 2.5% electrostatic agent and let it stand for 24 hours before putting into production, opening, semi-worsted carding, drawing, woolen, fine spinning, twisting, warping, hedging, Weaving, dipping treatment, coating treatment, inspection into packages.
[0022] The yarn formed by the parallel twisting process is woven into 420g / m2 polytetrafluoroethylene fiber filter cloth with a rapier loom using a 1 / 3 twill weaving process. The filter cloth is impregnated, and the impregnation solution is a polytetrafluoroethylene solution, and the proportion is:
[0023] PTFE
30%
polyphenylene
30%
1.5%
water
margin
[0024] The surface of the treated cloth is...
Embodiment 3
[0027] Use 400D polytetrafluoroethylene filaments through warping, hedging, and weaving (with an air-jet loom), and use a 3 / 5 weft double weaving process to weave into a 750g / m2 filter cloth (the weft yarn also uses 400D PTFE filament). Then the filter cloth is impregnated, and the impregnation solution is a polytetrafluoroethylene solution, and its composition is as follows:
[0028] PTFE
35%
polyphenylene
25%
2%
water
margin
[0029] The surface of the treated cloth is covered with a layer of polytetrafluoroethylene film, and then inspected into bags.
[0030] Its tensile strength is ≥4500N / 5cm.
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