PTFE fiber ntau tau npaj los ntawm cov txheej txheem kub dov thiab tsim orthogonal.Lub tshuab ntsuas hluav taws xob ntsuas hluav taws xob (SEM) tau siv los saib xyuas qhov chaw morphology ntawm fiber ntau daim nyias nyias, thiab nws cov thickness, permeability, aperture, porosity, tensile zog, acid thiab alkali corrosion kuj raug kuaj thiab soj ntsuam.
1.Structure thiabCov khoom ntawm PTFEkub dov fiber ntau membrane
PTFE fiber ntau tau npaj los ntawm cov txheej txheem kub dov thiab tsim orthogonal.Lub tshuab ntsuas hluav taws xob ntsuas hluav taws xob (SEM) tau siv los saib xyuas qhov chaw morphology ntawm fiber ntau daim nyias nyias, thiab nws cov thickness, permeability, aperture, porosity, tensile zog, acid thiab alkali corrosion kuj raug kuaj thiab soj ntsuam.Cov txiaj ntsig tau pom tias PTFE kub dov fiber ntau zaj duab xis thickness yog 0.12 ~ 0.15 hli, permeability yog 80 ~ 101 mm / s, pore txoj kab uas hla yog 14 ~ 17 ms, porosity yog 14.57% ~ 27.04%, tawg lub zog yog 38 ~ 59 N, elongation ntawm kev tawg yog 30% ~ 38%. Hauv 9 hom fiber ntau daim nyias nyias, tseem muaj ntau cov qauv fibers tshwj tsis yog cov fiber ntau yaj ntawm qee qhov chaw.Tom qab kho cov kua qaub thiab alkali, lub zog tensile ntawm fiber ntau daim nyias nyias tseem tsis hloov.Raws li cov txiaj ntsig kev xeem orthogonal, fiber ntau mesh ntom muaj qhov cuam tshuam loj tshaj plaws ntawm cov tuab, permeability, pore txoj kab uas hla thiab tensile zog ntawm fiber ntau daim nyias nyias, thiab nrog kev nce ntawm fiber ntau mesh ntom, permeability thiab pore txoj kab uas hla ntawm fiber ntau membrane txo. , thaum lub thickness thiab tawg lub zog nce.
2.Properties ntawm polytetrafluoroethylene hloov epdm roj hmab
EPDM hloov los ntawm polytetrafluoroethylene (PTFE) thiab nano silicon dioxide (SiO2) tau npaj los ntawm vulcanization.Scanning electron microscope thiab infrared spectrum pom tias PTFE thiab EPDM muaj kev sib raug zoo.DSC xeem tau pom tias cov khoom sib xyaw muaj qhov sib txawv iav hloov pauv kub.Thaum PTFE ntxiv rau hauv 5 qhov chaw, PTFE thiab EPDM muaj kev sib raug zoo.Lub sijhawm no, cov khoom siv kho tshuab ntawm epdm-ptfe ncav cuag qhov siab tshaj plaws, thiab nws lub zog tensile, elongation ntawm tawg, hardness thiab kua muag lub zog yog 22.42mpa, 588.91%, 82.0 ° thiab 49.60 kN / m feem.Kev tsom xam thermogravimetric thiab kev laus kev sim qhia tau hais tias kev laus thiab kub tsis kam ntawm PTFE tau txhim kho.Cov khoom siv kho tshuab ntawm EPDM kuj tau txhim kho zoo tom qab ntxiv 5 ntu ntawm nano SiO2.
3.Structure thiab cov khoom ntawm polytetrafluoroethylene / polypropylene hybrid yaj jet lim khoom
Txhawm rau txuas ntxiv lub sijhawm khaws cia ntawm cov nqi hluav taws xob zoo li qub ntawm cov khoom siv polypropylene (PP) yaj-tshuab, lub peev xwm khaws cia ntawm cov nqi zoo li qub tau txhim kho los ntawm cov organic hybridization.Hauv kev sim, PTFE ultrafine hmoov thiab PP hlais tau muab sib xyaw rau hauv granulate nyob rau hauv ib qho kev faib ua feem, thiab cov khoom sib txawv nonwoven tau los ntawm cov txheej txheem yaj-dav hlau molding.Cov qauv thiab kev ua tau zoo ntawm cov ntaub ntawv uas tsis yog-woven, xws li pom tseeb morphology, micropores, nto electrostatic peev xwm thiab pom efficiency, tau kawm, thiab sab nrauv corona electret technology tau saws los ua kom cov khoom nto nqa zoo li qub.Cov txiaj ntsig kev sim qhia tau hais tias ntxiv PTFE tuaj yeem txhim kho lub peev xwm ntawm cov khoom zoo li qub ntawm cov khoom siv yaj-dav hlau PP nonwoven, thiab thaum PTFE pawg feem ntau yog 0.1%, qhov saum npoo zoo li qub yog qhov siab tshaj plaws, qhov pom kev ua tau zoo yog qhov zoo tshaj plaws thiab zoo li qub. tus nqi stability yog qhov zoo tshaj plaws.
Post lub sij hawm: Jun-28-2019