Npog lub plawv ntawm lubdaim ntaub yajCov khoom siv lim dej yog ua los ntawm polypropylene superfine fiber ua ke nrog kev faib tawm random, qhov tsos, du, mos thiab dawb cov khoom siv fiber fineness ntawm 0.5 txog 1.0 mu m, qhov kev faib tawm random ntawm fiber los muab ntau lub sijhawm rau thermal bonding ntawm cov fiber thiab yog li ua rau cov khoom siv lim dej yaj-blown muaj thaj chaw loj dua, porosity siab dua (75%) lossis siab dua. Los ntawm kev siv lub tshuab lim dej siab, cov khoom muaj cov yam ntxwv ntawm kev tiv thaiv qis, kev ua haujlwm siab thiab muaj peev xwm plua plav siab.
Lub hauv paus ntawm lub ntsej muag
Cov ntaub uas yaj tawm los ntawm cov ntaub tsis-woven ua ib hom tshiab ntawm cov khoom siv lim dej zoo yog lub ntsej muag "lub plawv", piv rau cov khoom siv lim dej ib txwm muaj, kev lim cua thiab kev ntxuav kom huv si zoo dua ib puas npaug, tam sim no yog qhov tsim nyog tshaj plaws rau cov ntaub ntawv tiv thaiv kev noj qab haus huv (cov pa roj carbon ua kom muaj zog thiab cov khoom zoo sib xws tuaj yeem siv rau cov tshuaj tiv thaiv, tiv thaiv cov kab mob thiab cov kab mob yam tsis muaj kev lim dej ua haujlwm). Nws yug tsis tau xav txog thaum hmo ntuj, cov kws kho mob siv lub ntsej muag gauze ib puas xyoo tshem tawm tag nrho. Kev tiv thaiv kev kho mob feem ntau muab faib ua peb theem raws li qib kev tiv thaiv xav tau. Lub ntsej muag phais xiav-xiav uas peb hnav feem ntau tuaj yeem siv rau kev tiv thaiv thawj zaug, feem ntau tiv thaiv kev sib kis ntawm cov tee dej uas muaj cov kab mob hauv lub neej txhua hnub thiab kev tsim khoom. Qhov tseem ceeb los txhim kho lub peev xwm tiv thaiv yog ntxiv ib txheej lim dej ua los ntawm cov ntaub tsis-woven uas yaj-tshuaj tsuag rau hauv nruab nrab ntawm lub ntsej muag.
Cov txheej tiv thaiv nyob nruab nrab ntawm lub npog ntsej muag (txheej M luv luv) yog polypropylene yaj-tshuaj tsuag tsis-woven, thiab sab pem hauv ntej thiab sab nraub qaum ntawm lub npog ntsej muag yog cov txheej spunbonded (txheej S luv luv). Nyob ntawm qib kev tiv thaiv xav tau, ib lossis ntau txheej tuaj yeem muab tso rau hauv txheej M. Yog tias nws yog lub npog ntsej muag tiv thaiv theem 1, siv txheej M. Rau lub tshuab ua pa theem 3 zoo li N95, txheej M yuav xav tau peb txheej ntawm cov ntaub yaj-tshuaj tsuag tsis-woven lossis ntau dua. Tau kawg, ntau txheej ntawm txheej M, qhov tsis zoo ntawm huab cua ntawm lub npog ntsej muag, cov khoom tshwj xeeb yuav txawv.
Yog tias peb rhuav lub npog ntsej muag, peb yuav pom peb txheej saum toj no, uas yog txheej hygroscopic, txheej lim dej, thiab txheej thaiv dej.
Daim ntaub tsuag yaj, nyob hauv nruab nrab ntawm txheej lim lub ntsej muag, tuaj yeem lim cov kab mob, tiv thaiv kev kis tus kab mob. Daim ntaub tsuag yaj, daim ntaub tsuag yaj feem ntau yog polypropylene ua cov khoom siv raw tseem ceeb, txoj kab uas hla fiber tuaj yeem ncav cuag 1 ~ 5 micron. Cov fibers ultrafine nrog cov qauv capillarity tshwj xeeb ua rau tus lej thiab thaj chaw ntawm cov fibers ib cheeb tsam, yog li daim ntaub yaj-jet muaj cov khoom lim zoo, tiv thaiv, rwb thaiv tsev thiab nqus roj. Nws tuaj yeem siv rau hauv huab cua, cov ntaub ntawv lim kua, cov ntaub ntawv cais, cov ntaub ntawv nqus, cov ntaub ntawv npog ntsej muag, cov ntaub ntawv rwb thaiv tsev thermal, cov ntaub ntawv nqus roj thiab daim ntaub so thiab lwm yam teb.
Kev cuam tshuam thiab kev nqus
Cov ntaub yaj yog ib hom polypropylene nrog cov ntsuas yaj siab, uas yog ua los ntawm ntau cov xov paj ntoo sib xyaw ua ke hauv ib qho kev taw qhia random. Lub cheeb ntawm cov xov paj yog txij li 0.5 txog 10 microns, thiab lub cheeb ntawm cov xov paj yog li ib feem peb caug ntawm cov plaub hau.
Raws li pom tau los ntawm daim duab, tseem muaj ntau qhov sib txawv ntawm lub ntsej muag hauv qab lub tshuab hluav taws xob. Yog li peb yuav ua li cas thiaj thaiv tau tus kab mob?
Cov Npog Ncaujtiv thaiv cov kab mob los ntawm kev ua ob yam: ntes thiab ntes
Kev cuam tshuam:
Cov khoom siv lim dej siv cov ntaub lossis cov txheej txheem tsis-woven kom ua tiav qhov ceev ntawm cov fibers hauv qhov chaw thiab tsim ib lub network ntawm cov qhov hws, yog li tsim cov nyhuv "blocking" rau cov cua ntws. Cov khoom loj dua hauv huab cua yog "intercepted" los ntawm kev sib tsoo nrog cov fibers lossis los ntawm cov fiber mesh thaiv ntawm sab ntawm cov khoom siv lim dej. Rau cov khoom tsis yog biological hauv huab cua (xws li plua plav, PM2.5, thiab lwm yam), qhov ua tau zoo ntawm kev ntxuav ntawm cov ntaub npog qhov ncauj feem ntau nyob ntawm qhov muaj peev xwm interception ib zaug ntawm cov khoom siv lim dej.
Kev nqus:
Rau cov ntaub thaiv kab mob tiv thaiv kab mob, vim tias qhov me me ntawm cov kab mob xws li cov kab mob, nws nyuaj rau ntxuav feem ntau ntawm cov tshuaj lom los ntawm kev cuam tshuam cov qhov sib txawv ntawm cov ntaub npog ntsej muag. Yog li ntawd, electrostatic adsorption tau dhau los ua qhov tseem ceeb ntawm kev tiv thaiv ntaub npog ntsej muag. Cov ntaub ntuj ib txwm muaj zog heev hauv kev tsim thiab nqa hluav taws xob zoo li qub, yog li cov ntaub npog ntsej muag gauze muaj cov nyhuv adsorption me ntsis. Thiab cov polymer yaj dav hlau fiber tsis yog polar yog cov khoom siv zoo heev rau kev tsim hluav taws xob thiab khaws cia (qhov no, koj tuaj yeem piv qhov kev xav ntawm kev hnav khaub ncaws paj rwb ntshiab thiab cov khaub ncaws tshuaj fiber), ua rau nws "inherently" muaj kev ua tau zoo adsorption. Cov kws tshawb fawb tau ua ntau yam haujlwm ntawm yuav ua li cas tsim thiab tswj cov electrostatic efficiency ntawm cov ntaub ntawv lim. Hauv kev tsim ntaub npog ntsej muag, cov cuab yeej siv tshuab lossis hluav taws xob siv los ua kom cov nqi electrostatic rau hauv cov ntaub ntawv molten tsuag.
Vim yog lub peev xwm tshwj xeeb ntawm electrostatic adsorption, cov thev naus laus zis melting spray tuaj yeem tsim cov tshuaj fibers nrog ib qho kev txiav txim ntawm qhov loj me dua li ntawm cov fibers ntuj, uas kuj yog qhov zoo rau kev tsim cov tshuaj adsorption. Polypropylene yaj-sprayed non-woven fabric yog qhov tsis ntseeg thawj qhov kev xaiv rau cov ntaub ntawv tiv thaiv kev kho mob
Lub sijhawm tshaj tawm: Kaum Ib Hlis-14-2020