Ifihla umbindi weilaphu elinyibilikisiweyoIzinto zokucoca zenziwe ngefayibha ye-polypropylene superfine kunye nokusasazwa okungacwangciswanga, imbonakalo, ubucwebe befayibha yezinto ezithambileyo nezimhlophe obuyi-0.5 ukuya kwi-1.0 mu m, ukusasazwa okungacwangciswanga kwefayibha ukubonelela ngamathuba amaninzi okubopha ubushushu phakathi kwefayibha kwaye ngaloo ndlela kwenze ukuba izinto zokucoca igesi ezinyibilikisiweyo zibe nommandla omkhulu womphezulu othile, iimbobo eziphezulu (75%) okanye ngaphezulu. Ngokusebenza kakuhle kokucoca i-stationer ye-voltage ephezulu, imveliso ineempawu zokuxhathisa okuphantsi, ukusebenza kakuhle okuphezulu kunye nomthamo ophezulu wothuli.
Umbindi wemaski
Ilaphu elingalukwanga elinyibilikisiweyo njengohlobo olutsha lwezinto zokucoca ezisebenzayo kakhulu ziimaski "zentliziyo", xa zithelekiswa nezinto zokucoca zendabuko, ukuhluza umoya kunye nokusebenza kakuhle kokucoca ziye zaphucuka izihlandlo ezilikhulu, ngoku zezona zifanelekileyo kwizixhobo zokukhusela impilo yebhayoloji (ikhabhoni esebenzayo kunye nezinto ezifanayo zinokusetyenziselwa iikhemikhali zokukhusela, ngokuchasene neebhaktheriya kunye neentsholongwane ngaphandle komsebenzi wokucoca ukuhluza). Ukuzalwa kwayo ngokungalindelekanga ngobusuku obunye abasebenzi bezonyango BASEBENZISA imaski ye-gauze yeminyaka elikhulu isusiwe ngokupheleleyo. Ukhuseleko lwezonyango ngokubanzi lwahlulwe lube ngamanqanaba amathathu ngokwenqanaba leemfuno zokhuseleko. "Iimaski zotyando" eziluhlaza okwesibhakabhaka esizinxiba rhoqo zinokusetyenziselwa ukhuseleko oluphambili, ngokuyintloko ngokuchasene nokudluliselwa okuyingozi kwamaconsi aqulethe iintsholongwane kubomi bemihla ngemihla kunye nemveliso. Inyathelo eliphambili lokuphucula amandla okukhusela kukongeza umaleko wesihluzo owenziwe ngelaphu elingalukwanga elinyibilikisiweyo eliphakathi kwemaski.
Umaleko okhuselayo ophakathi kwimaski (umaleko M omfutshane) yilaphu elingalukwanga elitshizwa nge-polypropylene, kwaye amacala angaphambili nangasemva emaski ziileya ezisontiweyo (umaleko S omfutshane). Ngokuxhomekeke kwinqanaba lokhuseleko olufunekayo, umaleko omnye ukuya ngaphezulu ungafakwa kumaleko M. Ukuba yimaski yokukhusela yenqanaba 1, sebenzisa umaleko M. Kwisixhobo sokuphefumla senqanaba 3 njenge-N95, umaleko M unokufuna iileya ezintathu zelaphu elingalukwanga elitshizwa nge-melt-spray okanye ngaphezulu. Kakade ke, okukhona iileya ezininzi zomaleko M, kokukhona ukuvuleka komoya okubi kwemaski, iimveliso ezithile ziya kwahluka.
Ukuba sikrazula imaski, siza kubona iileya ezintathu ezingasentla, ezizezi: ileya e-hygroscopic, ileya yesihluzo esiphambili, kunye neleya yokuthintela amanzi.
Ilaphu lokutshiza elinyibilikayo, eliphakathi komaleko wesihluzi semaski, linokucoca iintsholongwane, lithintele ukusasazeka kweentsholongwane. Ilaphu lokutshiza elinyibilikayo, ilaphu lokutshiza elinyibilikayo ikakhulu libe yipolypropylene njengezinto ezisetyenziswa kakhulu, ububanzi befayibha bunokufikelela kwi-1 ~ 5 micron. Ezi fayibha zi-ultrafine ezinesakhiwo esikhethekileyo se-capillarity zandisa inani kunye nommandla womphezulu weefayibha kwindawo nganye, ukuze ilaphu le-melt-jet libe neempawu ezilungileyo zokucoca, ukuzikhusela, ukuthintela kunye nokufunxa ioyile. Lingasetyenziswa emoyeni, kwizinto zokucoca ulwelo, izinto zokwahlukanisa, izinto zokufunxa, izinto zemaski, izinto zokuthintela ubushushu, izinto zokuthintela ioyile kunye nelaphu lokusula kunye nezinye iindawo.
Ukuvalelwa kunye nokufunxwa
Ilaphu eliphehluzeliswe yi-melt blown luhlobo lwe-polypropylene ene-high melting index, eyenziwe ngee-criss-cross fibers ezininzi ezibekwe kwicala elingacwangciswanga. Ububanzi bee-fiber buqala kwi-0.5 ukuya kwi-10 microns, kwaye ububanzi bee-fibers bumalunga ne-1/30 yeenwele.
Njengoko kunokubonwa kumfanekiso, kusekho izikhewu ezininzi kwimaski phantsi kwe-electron microscope. Ngoko ke singayithintela njani le ntsholongwane?
Iimaskizikhusele kwiintsholongwane ngokwenza izinto ezimbini: ukubamba nokubamba
Ukuthintelwa:
Izinto zokucoca zixhomekeke kwiinkqubo zelaphu okanye ezingalukwanga ukuze kufezekiswe uxinano lweefayibha kwindawo kwaye zenze inethiwekhi ethile yee-pores, ngaloo ndlela zenze isiphumo "sokuthintelwa" komoya ohambayo. Ii-particles ezinkulu emoyeni "zithintelwa" kukungqubana neefayibha okanye ngokuvimba kwe-fiber mesh ecaleni kwezinto zokucoca. Kwii-particles ezingezizo zebhayoloji emoyeni (ezifana nothuli, i-PM2.5, njl.njl.), ukusebenza kakuhle kokucoca iimaski kuxhomekeke kakhulu kubuchule bokuthintela obunye bezinto zokucoca.
Ukufunxwa:
Kwiimaski zokukhusela zebhayoloji, ngenxa yobukhulu obuncinci kakhulu bezinto ezibangela izifo ezifana neentsholongwane, kunzima ukucoca uninzi lwezinto eziyingozi ngokuthatha izithuba zefayibha yemaski. Ke ngoko, ukufunxa nge-electrostatic kuye kwaba luphawu olubalulekileyo lomsebenzi wokukhusela imaski. Iifayibha zendalo zemveli zibuthathaka kakhulu ekuveliseni nasekuthwaleni umbane ongashukumiyo, ngoko ke iifayibha zegauze azinampembelelo ingako yokufunxa. Kwaye ifayibha yejethi ye-polymer enganyangekiyo sisixhobo esibalaseleyo sokwenza nokugcina i-electrostatic (kule ngongoma, ungathelekisa imvakalelo yokunxiba impahla yomqhaphu ecocekileyo kunye nempahla yefayibha yekhemikhali), okwenza ukuba "ngokwemvelo" ibe nokusebenza kakuhle kokufunxa. Abaphandi benze umsebenzi omninzi kwindlela yokuvelisa nokugcina ukusebenza kakuhle kwe-electrostatic kwezinto zokucoca. Kwimveliso yemaski, iindlela zoomatshini okanye ze-elektroniki zisetyenziselwa ukutyebisa itshaja ye-electrostatic ibe zizinto zokutshiza ezinyibilikisiweyo.
Ngenxa yesakhono esikhethekileyo sokufunxa nge-electrostatic, itekhnoloji yokufunxa ngokunyibilikisa i-melting spray inokuvelisa imicu yeekhemikhali enobubanzi obuncinci kunobo bemicu yendalo, nto leyo ekwanceda ekudalweni kokufunxa ngekhemikhali. Ilaphu elingalukwanga elitshizwa nge-polypropylene melt-spray ngokuqinisekileyo lukhetho lokuqala lwezixhobo zemaski yokukhusela yezonyango.
Ixesha lokuthumela: Novemba-14-2020