Chimaphimba pakati pansalu yosungunukaZipangizo zosefera zimapangidwa ndi ulusi wa polypropylene superfine pamodzi ndi kugawa mwachisawawa, mawonekedwe ake, kusalala, kofewa komanso koyera kwa ulusi wa 0.5 mpaka 1.0 mu m, kugawa mwachisawawa kwa ulusi kuti kupereke mwayi wochulukirapo wolumikizana pakati pa ulusiwo motero zimapangitsa kuti zinthu zosefera mpweya wosungunuka zikhale ndi malo akuluakulu, ma porosity apamwamba (75%) kapena apamwamba. Kudzera mu kusefera kwa stationer yamagetsi okwera, mankhwalawa ali ndi mawonekedwe otsika, ogwira ntchito bwino komanso mphamvu yayikulu yafumbi.
Pakati pa chigoba
Nsalu yosalukidwa yosungunuka ngati mtundu watsopano wa zinthu zosefera zogwira ntchito bwino kwambiri ndi masks a "mtima", poyerekeza ndi zinthu zosefera zachikhalidwe, kusefera mpweya ndi kuyeretsa bwino mpaka kufika pa nthawi zana, tsopano ndiyo yoyenera kwambiri pazinthu zotetezera thanzi la zamoyo (carbon activated ndi zinthu zina zofanana zitha kugwiritsidwa ntchito popanga mankhwala oteteza, motsutsana ndi mabakiteriya ndi mavairasi popanda ntchito yoyeretsa kusefera). Kubadwa kwake mosayembekezereka usiku wonse akatswiri azachipatala AGWIRITSA NTCHITO chigoba cha gauze cha zaka zana chomwe chachotsedwa kwathunthu. Chitetezo chachipatala nthawi zambiri chimagawidwa m'magawo atatu malinga ndi kuchuluka kwa zofunikira zotetezera. "Ma masks ochitira opaleshoni" abuluu owala omwe timavala nthawi zambiri angagwiritsidwe ntchito poteteza koyamba, makamaka motsutsana ndi kufalikira koopsa kwa madontho okhala ndi tizilombo toyambitsa matenda tsiku ndi tsiku komanso kupanga. Njira yofunika kwambiri yowonjezerera mphamvu yoteteza ndikuwonjezera wosanjikiza wopangidwa ndi nsalu yosalukidwa yosungunuka pakati pa chigoba.
Chigoba choteteza pakati pa chigoba (M layer mwachidule) ndi nsalu yopanda ulusi yopangidwa ndi polypropylene melt-sprayed, ndipo mbali zakutsogolo ndi zakumbuyo za chigoba ndi zigawo zopindika (S layer mwachidule). Kutengera ndi mulingo wotetezedwa wofunikira, gawo limodzi kapena angapo akhoza kuyikidwa mu M layer. Ngati ndi chigoba choteteza cha level 1, gwiritsani ntchito M layer. Pa chopumira cha level 3 monga N95, M-layer ingafunike zigawo zitatu za nsalu yopanda ulusi yopangidwa ndi melt-sprayed kapena kuposerapo. Zachidziwikire, zigawo zambiri za M layer, mpweya woipa wa chigoba, zinthu zinazake zidzakhala zosiyana.
Ngati titsegula chigoba, tidzaona zigawo zitatu zomwe zili pamwambapa, zomwe ndi gawo losanjikiza, gawo loyambira la fyuluta, ndi gawo lotchinga madzi.
Nsalu yothira madzi yosungunuka, yomwe ili pakati pa gawo la chigoba, imatha kusefa mabakiteriya, kupewa kufalikira kwa majeremusi. Nsalu yothira madzi yosungunuka, nsalu yothira madzi yosungunuka makamaka ku polypropylene ngati chinthu chachikulu chopangira zinthu zopangira, kukula kwa ulusi kumatha kufika 1 ~ 5 micron. Ulusi wopyapyala kwambiriwu wokhala ndi kapangidwe kapadera ka capillarity umawonjezera kuchuluka ndi malo a ulusi pagawo lililonse, kotero kuti nsalu yothira madzi yosungunuka imakhala ndi mphamvu zabwino zosefera, zoteteza, zoteteza komanso zoyamwa mafuta. Itha kugwiritsidwa ntchito mumlengalenga, zinthu zosefera zamadzimadzi, zinthu zodzipatula, zinthu zoyamwa, zinthu zophimba nkhope, zinthu zoteteza kutentha, zinthu zoyamwa mafuta ndi nsalu yopukutira ndi zina.
Kutsekereza ndi kulowetsedwa kwa madzi
Nsalu yosungunuka ndi mtundu wa polypropylene yokhala ndi index yosungunuka kwambiri, yomwe imapangidwa ndi ulusi wambiri wopingasa womwe umayikidwa mbali zosiyanasiyana. Kukula kwa ulusi kumakhala pakati pa ma microns 0.5 mpaka 10, ndipo kukula kwa ulusi ndi pafupifupi gawo limodzi mwa magawo atatu a tsitsi.
Monga momwe tikuonera pachithunzichi, pali mipata yambiri mu chigoba pansi pa maikulosikopu yamagetsi. Ndiye tingaletse bwanji kachilomboka?
Zophimba nkhopeTetezani ku mavairasi mwa kuchita zinthu ziwiri: kusaka ndi kusaka
Kuletsa:
Zipangizo zosefera zimadalira njira zodulira kapena zosalukidwa kuti zikwaniritse kuchulukana kwa ulusi mumlengalenga ndikupanga netiweki inayake ya ma pores, motero zimapangitsa kuti mpweya ukhale wotsekeka. Tinthu tating'onoting'ono tomwe tili mumlengalenga "timalowetsedwa" ndi kugundana ndi ulusi kapena ndi ulusi wotsekereza womwe uli m'mbali mwa zinthu zosefera. Pa tinthu tating'onoting'ono tomwe tili mumlengalenga (monga fumbi, PM2.5, ndi zina zotero), mphamvu yoyeretsa masks imadalira kwambiri mphamvu imodzi yotsekereza zinthu zosefera.
Kulowetsedwa kwa madzi:
Pa masks oteteza zachilengedwe, chifukwa cha kukula kochepa kwa tizilombo toyambitsa matenda monga mavairasi, zimakhala zovuta kuyeretsa zinthu zambiri zovulaza poletsa mipata ya ulusi wa mask. Chifukwa chake, kulowetsedwa kwa electrostatic kwakhala chinthu chofunikira kwambiri pa ntchito yoteteza mask. Ulusi wachilengedwe ndi wofooka kwambiri popanga ndi kunyamula magetsi osasunthika, kotero masks a gauze alibe mphamvu yolowetsedwa. Ndipo ulusi wosungunuka wa polymer wosakhala polar ndi chinthu chabwino kwambiri chopangira ndi kusunga magetsi osasunthika (pankhaniyi, mutha kufananiza kumverera kovala zovala za thonje loyera ndi zovala za ulusi wa mankhwala), zomwe zimapangitsa kuti "mwachibadwa" zikhale ndi magwiridwe antchito abwino kwambiri olowetsedwa. Ofufuza agwira ntchito yambiri momwe angapangire ndikusunga mphamvu zamagetsi zamagetsi zosefera. Pakupanga masks, njira zamakanika kapena zamagetsi zimagwiritsidwa ntchito kuti ziwonjezere mphamvu zamagetsi zamagetsi kukhala zinthu zosungunuka.
Chifukwa cha mphamvu yapadera ya electrostatic adsorption, ukadaulo wothira mankhwala osungunula umatha kupanga ulusi wa mankhwala wokhala ndi mainchesi ochepa kuposa ulusi wachilengedwe, zomwe zimathandizanso kupanga mankhwala okhumudwitsidwa. Nsalu yosalukidwa yopangidwa ndi polypropylene melt-spray mosakayikira ndiyo njira yoyamba yopangira zinthu zoteteza chigoba chachipatala.
Nthawi yotumizira: Novembala-14-2020