I-PTFE i-fiber membranes yalungiswa ngenkqubo eshushu yokuqengqeleka kunye noyilo lwe-orthogonal.Ukuskena i-electron microscope (SEM) yayisetyenziselwa ukujonga i-morphology yomphezulu we-fiber membrane, kwaye ubukhulu bayo, ukuvuthwa, ukuvuleka, i-porosity, i-tensile properties, i-asidi kunye nokumelana nokubola kwe-alkali kwavavanywa kwaye kwavavanywa.
1.Isakhiwo kunyeiimpawu ze-PTFEinwebu yefiber eshushu
I-PTFE i-fiber membranes yalungiswa ngenkqubo eshushu yokuqengqeleka kunye noyilo lwe-orthogonal.Ukuskena i-electron microscope (SEM) yayisetyenziselwa ukujonga i-morphology yomphezulu we-fiber membrane, kwaye ubukhulu bayo, ukuvuthwa, ukuvuleka, i-porosity, i-tensile properties, i-asidi kunye nokumelana nokubola kwe-alkali kwavavanywa kwaye kwavavanywa.Iziphumo zibonise ukuba ubukhulu befilimu ye-PTFE eshushu-i-fiber yayiyi-0.12 ~ 0.15 mm, ukunyanzeliswa kwe-80 ~ 101 mm / s, i-pore diameter yayiyi-14 ~ 17 ms, i-porosity yayiyi-14.57% ~ 27.04%, amandla okuphuka yi-38 ~ 59 N, Ubude bexesha lokuphumla bekungama-30% ~ 38%.Kwiintlobo ezili-9 zefiber membranes, kusekho ulwakhiwo oluninzi lwefibrous ngaphandle kokunyibilika kwefiber kwezinye iindawo.Emva kokunyangwa kwe-asidi kunye ne-alkali, iipropati ezithintekayo ze-fiber membrane zahlala zingatshintshi.Ngokweziphumo zovavanyo lwe-orthogonal, ukuxinana kwe-fiber mesh kunempembelelo enkulu kubunzima, ukufikeleleka, i-pore idayamitha kunye nepropathi eqinile ye-fiber membrane, kunye nokwanda koxinano lwe-fiber mesh, ukufikeleleka kunye nedayamitha yepore ye-fiber membrane yehla. , ngelixa ubukhulu kunye namandla okuqhekeka kwanda.
2.Iipropathi ze-polytetrafluoroethylene irabha epdm elungisiweyo
I-EPDM ilungiswe nge-polytetrafluoroethylene (PTFE) kunye ne-nano silicon dioxide (SiO2) yalungiswa nge-vulcanization.Ukuskena i-electron microscope kunye ne-infrared spectrum ibonise ukuba i-PTFE kunye ne-EPDM zihambelana kakuhle.Uvavanyo lwe-DSC lubonise ukuba i-composite yayinobushushu obukhethekileyo beglasi.Xa i-PTFE yongezwa kwiindawo ezi-5, i-PTFE kunye ne-EPDM zihambelana kakuhle.Ngeli xesha, iipropati mechanical of epdm-ptfe ukufikelela phezulu, kwaye amandla ayo tensile, elongation ngexesha ikhefu, ubulukhuni kunye nokukrazula amandla 22.42mpa, 588.91%, 82.0 ° kunye 49.60 kN/m ngokulandelanayo.Uhlalutyo lwe-Thermogravimetric kunye novavanyo lokuguga lubonisa ukuba ukuguga kunye nokuxhathisa ukushisa kwe-PTFE kuphuculwe.Iimpawu zomatshini ze-EPDM nazo zaphuculwa kakhulu emva kokongeza iinxalenye ze-5 ze-nano SiO2.
3. Ulwakhiwo kunye neempawu zepolytetrafluoroethylene/polypropylene hybrid melt jet filter material
Ukuze kwandiswe ixesha lokugcinwa kwentlawulo ye-static kumphezulu we-polypropylene (PP) izinto ezincibilikayo ezincibilikayo, ukugcinwa kwamandla okugcinwa kwentlawulo ye-static kwaphuculwa yi-organic hybridization.Kuvavanyo, i-PTFE i-ultrafine powder kunye ne-PP isilayi zaxutywa kwi-granulate kumlinganiselo othile, kunye nezixhobo ezahlukeneyo ze-nonwoven zafunyanwa ngenkqubo yokubumba i-jet-jet.Ubume kunye nokusebenza kwemathiriyeli engalukwanga, njenge-morphology ebonakalayo, i-micropores, amandla ombane ongaphezulu kunye nokusebenza kakuhle kokucoca, zaphononongwa, kwaye iteknoloji ye-corona ye-electret yangaphandle yamkelwa ukwenza umphezulu wezinto eziphathekayo uthwale intlawulo engatshintshiyo.Iziphumo zovavanyo zibonisa ukuba ukongeza i-PTFE kunokuphucula ngokufanelekileyo umthamo wokugcina we-static charge ye-melt-jet PP izinto ezingalukwanga, kwaye xa iqhezu lobunzima be-PTFE liyi-0.1%, i-voltage ye-static surface yeyona iphezulu, ukusebenza kokucoca yeyona nto ingcono kwaye i-static uzinzo lwentlawulo yeyona nto ingcono.
Ixesha lokuposa: Jun-28-2019