N nyob rau hauv N95 qhov ncauj qhov ntswg sawv cev tsis resistant rau roj, uas yog, tsis resistant rau roj; Tus lej sawv cev rau kev pom zoo thaum kuaj nrog 0.3 micron hais, thiab 95 txhais tau tias nws tuaj yeem lim tawm tsawg kawg 95% ntawm cov khoom me me xws li kab mob khaub thuas, plua plav, paj ntoos, hawb pob, thiab haus luam yeeb. Zoo ib yam li daim npog qhov ncauj qhov ntswg kho mob, cov qauv tseem ceeb ntawm N95 lub ntsej muag muaj peb ntu: txheej txheej dej noo-pov thawj, nruab nrab lim thiab adsorption txheej, thiab txheej txheej tawv nqaij. Cov khoom siv raw siv yog siab molecular hnyav polypropylene meltblown ntaub. Txij li thaum lawv tag nrho cov ntaub meltblown, dab tsi yog vim li cas rau qhov pom kev ua haujlwm tsis tau raws li tus qauv?
Yog vim li cas rau qhov tsis zoo pom kev ua haujlwm ntawm daim npog ntsej muag meltblown ntaub
Kev pom kev ua haujlwm ntawm meltblown non-woven npuag nws tus kheej tsuas yog qis dua 70%. Nws tsis yog txaus los cia siab rau ib leeg ntawm cov neeg kho tshuab teeb meem cuam tshuam ntawm peb-dimensional fiber aggregates ntawm meltblown ultrafine fibers nrog nplua fibers, me me voids, thiab siab porosity. Txwv tsis pub, tsuas yog nce qhov hnyav thiab tuab ntawm cov khoom yuav ua rau kom pom kev ua haujlwm zoo. Yog li yaj cov khoom siv lim dej feem ntau ntxiv cov nqi hluav taws xob rau cov ntaub nplaum yaj los ntawm cov txheej txheem ntawm electrostatic polarization, siv cov txheej txheem electrostatic los txhim kho kev ua haujlwm pom, uas tuaj yeem ncav cuag 99.9% txog 99.99%. Qhov ntawd yog hais, ncav N95 tus qauv lossis siab dua.
Lub hauv paus ntsiab lus ntawm melt blown fabric fiber filtration
Lub tshuab ziab khaub ncaws siv rau N95 lub ntsej muag tus qauv feem ntau yog ntes cov khoom los ntawm ob qho kev cuam tshuam ntawm cov khoom thaiv thiab electrostatic adsorption. Cov kev cuam tshuam ntawm cov khoom muaj feem cuam tshuam nrog cov qauv thiab cov khoom ntawm cov khoom: thaum lub meltblown ntaub yog them los ntawm corona nrog ib tug voltage ntawm ob peb puas mus rau ob peb txhiab volts, cov fibers diffuse mus rau hauv ib tug network ntawm pores vim electrostatic repulsion, thiab qhov luaj li cas ntawm fibers yog ntau loj dua cov plua plav, yog li tsim ib tug qhib qauv. Thaum cov plua plav dhau los ntawm cov khoom siv lim dej yaj, cov nyhuv electrostatic tsis tsuas yog cuam tshuam cov plua plav, tab sis kuj ntes cov polarized nruab nrab hais los ntawm electrostatic induction nyhuv. Qhov siab dua qhov muaj peev xwm ntawm cov khoom siv hluav taws xob, qhov siab dua cov nqi ntawm cov khoom, qhov taw tes ntau dua nws nqa, thiab qhov muaj zog ntawm cov nyhuv electrostatic. Corona tawm tuaj yeem txhim kho qhov pom kev ua haujlwm ntawm polypropylene meltblown ntaub. Ntxiv cov neeg taug kev tuaj yeem txhim kho kev ua kom zoo dua qub, ua kom pom kev lim dej, thiab txhim kho lub peev xwm khaws cia ntawm lub vev xaib fiber ntau.
Ntxiv 6% tourmaline rau cov electrode muaj txiaj ntsig zoo dua. Muaj ntau cov ntaub ntawv polarizable tuaj yeem ua rau kom muaj zog thiab nruab nrab ntawm cov neeg nqa khoom. Electrified masterbatch yuav tsum muaj nanometer lossis micro nanometer scale loj thiab uniformity. Zoo polar masterbatch tuaj yeem txhim kho kev ua haujlwm spinning yam tsis muaj kev cuam tshuam rau lub nozzle, txhim khu kev pom zoo, tiv thaiv electrostatic degradation, txo cov cua tsis kam, nce qhov ceev thiab qhov tob ntawm tus nqi ntes, nce qhov tshwm sim ntawm cov nqi ntau dua raug kaw hauv cov fiber ntau, thiab khaws cov nqi ntes hauv lub xeev qis zog, ua rau nws nyuaj rau kev khiav tawm ntawm tus nqi thauj khoom qis los yog ua kom tsis zoo.
Melt tshuab electrostatic polarization txheej txheem
Cov txheej txheem ntawm yaj tshuab hluav taws xob hluav taws xob cuam tshuam nrog kev ntxiv cov khoom siv tsis zoo xws li tourmaline, silicon dioxide, thiab zirconium phosphate rau PP polypropylene polymer ua ntej. Tom qab ntawd, ua ntej dov cov ntaub, cov khoom yaj yaj yog them los ntawm ib lossis ntau txheej ntawm corona tawm siv rab koob zoo li electrode voltage ntawm 35-50KV tsim los ntawm lub tshuab hluav taws xob electrostatic. Thaum siv hluav taws xob siab, cov cua hauv qab ntawm rab koob ua rau corona ionization, uas ua rau hauv zos tawg tawm. Cov neeg nqa khoom them nqi tau tso rau ntawm qhov chaw ntawm cov ntaub yaj yaj los ntawm kev ua haujlwm ntawm lub tshuab hluav taws xob, thiab qee qhov ntawm lawv yuav raug daig los ntawm cov ntxiab ntawm cov khoom nyob ruaj ruaj ntawm niam, ua rau cov khoom yaj hauv cov khoom siv lim dej rau cov khoom siv electrode. Qhov hluav taws xob thaum lub sijhawm txheej txheem corona no qis dua me ntsis piv rau qhov tso tawm nrog qhov hluav taws xob siab ntawm ib puag ncig 200Kv, uas ua rau cov khoom siv ozone tsawg dua. Qhov cuam tshuam ntawm kev them nyiaj nyob deb thiab them qhov hluav taws xob yog qhov tsis zoo. Raws li qhov kev ncua deb ntawm kev them nyiaj nce, tus nqi ntawm cov khoom raug txo qis.
Electrified meltblown ntaub yog yuav tsum tau
1. Ib txheej ntawm cov khoom siv yaj yaj
2. Electrified masterbatch
3. Plaub txheej ntawm high-voltage electrostatic paug li
4. Cov cuab yeej txiav
Meltblown ntaub yuav tsum khaws cia noo-pov thawj thiab tsis muaj dej
Nyob rau hauv ib txwm kub thiab av noo tej yam kev mob, PP yaj tshuab polarizable cov ntaub ntawv muaj zoo heev nqi cia stability. Txawm li cas los xij, thaum tus qauv nyob rau hauv qhov chaw muaj av noo ntau, qhov kev poob nyiaj ntau tshwm sim vim qhov cuam tshuam ntawm pawg polar hauv cov dej molecules thiab anisotropic hais nyob rau hauv cov huab cua ntawm cov nqi ntawm cov fibers. Tus nqi txo nrog nce av noo thiab ua sai dua. Yog li ntawd, thaum lub sij hawm kev thauj mus los thiab cia, lub meltblown ntaub yuav tsum tau khaws cia noo noo-pov thawj thiab tsis txhob sib cuag nrog high humidity ib puag ncig. Yog tias nws tsis raug khaws cia kom raug, lub qhov ncauj qhov ntswg uas tsim los tseem yuav nyuaj ua kom tau raws li cov qauv.
Dongguan Liansheng Nonwoven Technology Co., Ltd.tau tsim nyob rau hauv lub Tsib Hlis 2020. Nws yog ib tug loj-scale non-woven npuag ntau lawm enterprise integrating kev tshawb fawb thiab kev loj hlob, ntau lawm, thiab muag khoom. Nws tuaj yeem tsim ntau yam xim ntawm PP spunbond non-woven fabrics nrog qhov dav ntawm tsawg dua 3.2 meters los ntawm 9 grams mus rau 300 grams.
Post lub sij hawm: Oct-27-2024