PTFE fiber membranes yakagadzirirwa nekupisa kutenderedza maitiro uye orthogonal dhizaini.Scanning electron maikorosikopu (SEM) yakashandiswa kutarisa pamusoro morphology ye fiber membrane, uye ukobvu hwayo, kupera, aperture, porosity, tensile properties, asidhi uye alkali corrosion resistance yakaedzwa uye yakaongororwa.
1.Structure uyezvinhu zvePTFEinopisa-yakaputirwa fiber membrane
PTFE fiber membranes yakagadzirirwa nekupisa kutenderedza maitiro uye orthogonal dhizaini.Scanning electron maikorosikopu (SEM) yakashandiswa kutarisa pamusoro morphology yefiber membrane, uye ukobvu hwayo, kupera, aperture, porosity, tensile properties, asidhi uye alkali corrosion resistance yakaedzwa uye yakaongororwa.Zvigumisiro zvakaratidza kuti PTFE inopisa-yakaputirwa fiber film thickness yaiva 0.12 ~ 0.15 mm, kupera kwaiva 80 ~ 101 mm / s, pore diameter yaiva 14 ~ 17 ms, porosity yaiva 14.57% ~ 27.04%, simba rekuputsika raiva 38 ~ 59 N, kureba panguva yekuzorora kwaive 30% ~ 38%.Mumhando 9 dzefiber membranes, pachine zvakawanda zvefibrous structures kunze kwekunyungudika kwefiber pane dzimwe nzvimbo.Mushure mekurapwa kweasidhi uye alkali, iyo tensile zvimiro zvefiber membrane yakaramba isina kuchinjika.Zvinoenderana nemhedzisiro yeorthogonal bvunzo, iyo fiber mesh density ine simba rakakura pane ukobvu, kupenya, dhayamita yepore uye kusimba kwezvinhu zvefiber membrane, uye nekuwedzera kwefiber mesh density, kupera uye pore dhayamita yefiber membrane inoderera. , ukuwo kukora uye kutsemuka kwesimba kunowedzera.
2.Properties ye polytetrafluoroethylene yakagadziridzwa epdm rubber
EPDM yakagadziridzwa ne polytetrafluoroethylene (PTFE) uye nano silicon dioxide (SiO2) yakagadzirwa nevulcanization.Kuongorora maikorosikopu erekitironi uye infrared spectrum yakaratidza kuti PTFE neEPDM dzaive nekugarisana kwakanaka.DSC bvunzo yakaratidza kuti iyo composite yaive neyakasarudzika girazi tembiricha yekuchinja.Kana PTFE yawedzerwa muzvikamu zvishanu, PTFE neEPDM zvine kugarisana kwakanaka.Panguva ino, mechanical properties epdm-ptfe inosvika pakakwirira, uye simba rayo rekusimba, kureba panguva yekuzorora, kuoma uye kubvarura simba 22.42mpa, 588.91%, 82.0 ° uye 49.60 kN / m zvakateerana.Kuongorora kweThermogravimetric uye kuedza kukwegura kunoratidza kuti kuchembera uye kupisa kupisa kwePTFE kunovandudzwa.Iyo mechanical properties yeEPDM yakagadziridzwawo zvakanyanya mushure mekuwedzera 5 zvikamu zve nano SiO2.
3.Structure uye zvivakwa zve polytetrafluoroethylene/polypropylene hybrid melt jet filter material
Kuti uwedzere nguva yekuchengetedza ye static charge pamusoro pe polypropylene (PP) yakanyungudutswa zvinhu, iyo yekuchengetera static charge yakavandudzwa neorganic hybridization.Muchiyedzo, PTFE ultrafine poda uye PP slice zvakasanganiswa kuita granulate mune imwe chikamu, uye zvakasiyana-siyana zvisina kuruka zvinhu zvakawanikwa ne melt-jet molding process.Mamiriro uye kuita kwezvinhu zvisina kuruka, senge morphology inooneka, micropores, yepamusoro electrostatic kugona uye kusefa kunyatsoita, zvakadzidzwa, uye yekunze corona electret tekinoroji yakagamuchirwa kuita kuti iyo yepasi itakure static charge.Mhedzisiro dzebvunzo dzinoratidza kuti kuwedzera PTFE kunogona kunyatso kuvandudza huwandu hwekuchengetera static charge ye melt-jet PP nonwoven materials, uye kana PTFE mass fraction iri 0.1%, iyo surface static voltage ndiyo yakanyanya kukwirira, kusefa ndiko kwakanyanya kunaka uye kwakamira. kuchaja kugadzikana ndiko kwakanakisa.
Nguva yekutumira: Jun-28-2019