PTFE CHIKWANGWANI nembanemba anakonzedwa ndi otentha kugudubuza ndondomeko ndi orthogonal mapangidwe.Scanning electron maikulosikopu (SEM) idagwiritsidwa ntchito kuyang'ana mawonekedwe a pamwamba pa nembanemba ya fiber, ndipo makulidwe ake, permeability, pobowo, porosity, mphamvu zolimba, asidi ndi kukana kwa dzimbiri za alkali zidayesedwa ndikuwunikidwa.
1.Mapangidwe ndikatundu wa PTFEotentha adagulung'undisa fiber membrane
PTFE CHIKWANGWANI nembanemba anakonzedwa ndi otentha kugudubuza ndondomeko ndi orthogonal mapangidwe.Scanning electron maikulosikopu (SEM) idagwiritsidwa ntchito kuyang'ana mawonekedwe a pamwamba pa nembanemba ya fiber, ndipo makulidwe ake, permeability, pobowo, porosity, mphamvu zolimba, asidi ndi kukana kwa dzimbiri za alkali zidayesedwa ndikuwunikidwa.Zotsatira zake zidawonetsa kuti makulidwe a filimu yotentha ya PTFE anali 0.12 ~ 0.15 mm, kuthekera kwake kunali 80 ~ 101 mm / s, pore m'mimba mwake anali 14 ~ 17 ms, porosity inali 14.57% ~ 27.04%, mphamvu yosweka inali 38 ~ 59 N, elongation panthawi yopuma inali 30% ~ 38%.Mu mitundu 9 ya nembanemba ya ulusi, pamakhala zinthu zambiri za ulusi kupatula ulusi womwe umasungunuka pamalo ena.Pambuyo pa chithandizo cha asidi ndi alkali, mphamvu zolimba za fiber nembanemba sizinasinthe.Malinga ndi zotsatira za mayeso a orthogonal, kachulukidwe ka fiber mesh kachulukidwe kamene kamakhudza kwambiri makulidwe, ma permeability, pore m'mimba mwake komanso mphamvu yamphamvu ya fiber nembanemba, ndipo pakuwonjezeka kwa kachulukidwe ka fiber mesh, permeability ndi pore diameter ya fiber nembanemba imachepa. , pamene makulidwe ndi mphamvu yosweka ikuwonjezeka.
2.Properties ya polytetrafluoroethylene yosinthidwa epdm rabara
EPDM yosinthidwa ndi polytetrafluoroethylene (PTFE) ndi nano silicon dioxide (SiO2) inakonzedwa ndi vulcanization.Kusanthula maikulosikopu ya ma elekitironi ndi mawonekedwe a infrared kunawonetsa kuti PTFE ndi EPDM zinali zogwirizana bwino.Mayeso a DSC adawonetsa kuti kompositiyo inali ndi kutentha kwapadera kwa galasi.Pamene PTFE anawonjezera 5 mbali, PTFE ndi EPDM ndi ngakhale wabwino.Panthawiyi, mawotchi a epdm-ptfe amafika pamwamba kwambiri, ndipo mphamvu zake zowonongeka, elongation panthawi yopuma, kuuma ndi kugwetsa mphamvu ndi 22.42mpa, 588.91%, 82.0 ° ndi 49.60 kN / m.Kusanthula kwa Thermogravimetric ndi kuyesa kukalamba kumasonyeza kuti kukalamba ndi kutentha kwa PTFE kumakhala bwino.Zochita zamakina za EPDM zidasinthidwanso kwambiri pambuyo powonjezera magawo a 5 a nano SiO2.
3.Structure ndi katundu wa polytetrafluoroethylene/polypropylene wosakanizidwa kusungunula jet fyuluta chuma
Pofuna kukulitsa nthawi yosungiramo zinthu zosungunula za polypropylene (PP), mphamvu yosungira ya static charge idawongoleredwa ndi organic hybridization.Poyesera, PTFE ultrafine ufa ndi PP kagawo adasakanizidwa kuti granulate mu gawo linalake, ndi zipangizo zosiyanasiyana nonwoven anapezedwa ndi kusungunula-ndege akamaumba ndondomeko.Kapangidwe ndi ntchito ya zinthu nonwoven, monga zikuoneka morphology, micropores, pamwamba electrostatic kuthekera ndi kusefera dzuwa, anaphunziridwa, ndi kunja corona electret luso anatengera kuti zinthu pamwamba kunyamula mlandu malo amodzi.Zotsatira zoyeserera zikuwonetsa kuti kuwonjezera PTFE kumatha kuwongolera bwino mphamvu yosungiramo zinthu zosungunula-ndege PP, ndipo pamene PTFE misa kagawo ndi 0.1%, pamwamba malo amodzi voteji ndi apamwamba, kusefera ntchito yabwino ndi malo amodzi. kukhazikika kwa ndalama ndikwabwino kwambiri.
Nthawi yotumiza: Jun-28-2019