Meltblown daim ntaub yog cov khoom tseem ceeb ntawm lub npog ntsej muag. Meltblown daim ntaub siv cov polypropylene ua cov khoom tseem ceeb, thiab cov khoom siv fiber ntau tuaj yeem ncav cuag li 1 txog 5 microns. Muaj ntau cov voids, fluffy qauv, thiab zoo quav kuj. Cov hluav taws xob ultrafine nrog cov qauv tshwj xeeb capillary nce tus naj npawb thiab thaj chaw ntawm cov fibers hauv ib cheeb tsam, kom cov ntaub npuag yaj muaj cov kev pom zoo, kev tiv thaiv zoo, tiv thaiv kom sov, thiab cov roj nqus. Nws tuaj yeem siv rau hauv cov kab ntawm huab cua, cov ntaub ntawv ua kua, cov ntaub ntawv rwb thaiv tsev, cov ntaub ntawv nqus, cov ntaub ntawv npog ntsej muag, cov ntaub ntawv siv rwb thaiv tsev, cov khoom siv roj-ua kom zoo nkauj thiab ntaub plaub.
Thaum Lub Peb Hlis 8, 2020, Xeev Tuam Txhab Saib Xyuas Cov Khoom Siv Tshawb Xyuas thiab Pawg Neeg Saib Xyuas Haujlwm ntawm Lub Xeev Pawg Neeg Saib Xyuas Hauv Xeev tau tshaj tawm tias thaum ntsib lub ntsej muag tawg ntawm cov ntaub npuag yaj rau cov ntaub ntawv tseem ceeb ntawm lub qhov ncauj qhov ntswg, Lub Xeev-Lub Tuam Txhab Saib Xyuas Cov Khoom Muag Lub Xeev Council tau coj cov hauv paus lag luam tsim kho kom ceev cov kab tsim kho, muab tso rau hauv kev tsim tawm sai li sai tau, thiab nthuav cov yaj cov tshuab cov khw muag khoom lag luam xa tuaj. Kev tiv thaiv thiab tswj hwm muab kev tiv thaiv. Raws li SASAC Kev Kho Mob Khoom Siv Tshwj Xeeb Pab Pawg, thaum txog 24:00 Lub Peb Hlis 6, kev tsim tawm ntawm cov ntaub npuag yaj ntawm cov chaw lag luam tau txog 26 tons hnub ntawd. Raws li cov kab ntau lawm tshiab tau ua tiav thiab muab tso rau hauv ntau lawm, cov khoom ntawm meltblown cov ntaub yuav tau nce ntau nyob rau lub lim tiam tom ntej. SASAC thiab cov chaw lag luam hauv nruab nrab yuav txuas ntxiv txhim kho lawv cov dag zog los xyuas kom cov khoom siv kho mob xws li ntaub npog npog chaw tsim tshuaj kho mob
Cov tswv yim pib
Meltblown daim ntaub yog cov khoom tseem ceeb ntawm lub npog ntsej muag. Kev kho mob qhov ncauj qhov ntswg thiab N95 qhov ncauj qhov ntswg yog tsim ntawm spunbond txheej, meltblown txheej thiab spunbond txheej, wherein spunbond txheej thiab meltblown txheej yog ob qho los ntawm cov khoom siv polypropylene PP.
Cov tau txais daim ntawv thov
(1) Cov ntaub ntawv kho mob thiab tu cev: cov khaub ncaws phais, khaub ncaws tiv thaiv, ntaub qhwv kom tsis muaj menyuam, npog ntsej muag, phuam qhwv caj dab, phuam ntxuav muag, thiab lwm yam;
(2) Cov ntaub rau cov khoom siv kho kom zoo nkauj hauv tsev: daim ntaub thaiv phab ntsa, ntaub pua rooj, ntaub pua chaw, txaj txaj, thiab lwm yam;
(3) Cov phuam rau cov ris tsho: hauv ob sab phlu, nplaum hauv ob sab phlu, plaub ya ri, cov paj rwb zoo nkauj, ntau yam tawv hluavtaws tawv cov ntaub, thiab lwm yam;
(4) Cov ntaub ua lag luam: cov khoom siv lim, cov khoom siv ntxig, cov hnab ntim khoom, cov hnab ntim khoom, cov ntaub npog, thiab lwm yam;
(5) daim ntaub ua liaj ua teb: daim ntaub tiv thaiv cov qoob loo, cov ntaub tsaj nyom, cov ntaub npog cov dej, cov ntaub thaiv npog rwb thaiv tsev, thiab lwm yam.;
(6) Lwm tus: thaj chaw paj rwb, rwb thaiv tsev thermal thiab lub suab rwb thaiv tsev ntaub ntawv, linoleum, luam yeeb lim, hnab tshuaj yej, thiab lwm yam.
Cov yaj tshuab lub tshuab lim cov khoom yog tsim ntawm polypropylene microfibers tuaj yeem faib thiab faib ua ke. Cov tsos yog dawb, du thiab muag. Cov khoom siv fiber ntau zoo yog 0.5-1.0μm. Kev sib faib ntawm cov xov paj hluav taws xob ntau dua cov kev sib koom ua ke ntawm cov fiber ntau, kom lub tshuab hluav taws xob cov roj lim tau muaj qhov tshwj xeeb loj dua thaj chaw thiab ntau dua kev ua kom sov dua (≥75%). Tom qab high-pressure electret pom kev ua hauj lwm zoo, cov khoom muaj cov yam ntxwv ntawm kev tiv thaiv qis, siab ua haujlwm, siab plua plav muaj zog thiab lwm yam.
Lub ntsiab tseem ntsiab lus hloov
Qhov hnyav: 18g-500g
Dav: feem ntau 160cm thiab 180cm (tuaj yeem txiav txim siab raws li cov neeg siv khoom xav tau)
Melt-blown daim ntaub yog qhov sib txawv ntawm cov cua kub ceev kom kos cov dej ntws sib txawv ntawm polymer yaj extruded los ntawm cov tuag orifice, yog li tsim cov nplua fiber ntau thiab sau lawv ntawm cov vijtsam condensed lossis cov menyuam, thaum sib txuas lawv tus kheej los ua Meltblown nonwoven npuag Cov.
Cov txheej txheem ntau lawm ntawm meltblown daim ntaub yog qhov tseem ceeb raws li hauv qab no:
1. Yaj ua kev npaj
2. Lim
3. Ntsuas Ntsuas
4. Qhuav yog extruded los ntawm spinneret
5. Txhab trickle drafting thiab txias
6. Kev Netting
Khoom siv kho kom raug
Meltblown cov ntaub siv cov polypropylene ua cov khoom tseem ceeb, thiab cov khoom siv fiber ntau tuaj yeem ncav cuag 0.5-10 microns. Cov roj ntsha ultrafine nrog cov qauv capillary nce ntxiv cov naj npawb thiab thaj chaw ntawm cov fibers hauv ib cheeb tsam, yog li ua cov ntaub ntawv meltblown muaj cov huab cua pom zoo. Yog cov ntaub npog ntsej muag zoo. Hauv cov tsev kho mob loj, nruab nrab thiab me, nyob hauv av qeeg - thiab thaj chaw muaj dej nyab, thaum lub caij muaj SARS, tus mob khaub thuas noog thiab H1N1, melt-blown lim ntawv ua lub luag haujlwm tsis yooj yim nrog nws cov txiaj ntsig lim tau zoo.
Kev siv cov ntaub meltblown tseem ceeb:
1. Lim cov khoom siv
2. Cov ntaub ntawv kho mob thiab khoom noj qab haus huv
3. Kev tiv thaiv ib puag ncig cov ntaub ntawv
4. Cov Ntaub Ntawv Khaub Ncaws
5. Cov khoom siv roj teeb sib cais
6. Cov ntaub ntawv so