Cov ntaub mos mos uas tsis yog ntaubtxheej txheem: polymer pub - yaj extrusion - fiber tsim - txias - rau hauv lub network - txhawb nqa rau hauv daim ntaub.
Kev txhim kho cov thev naus laus zis melt-Jet nonwovens -- Ob-component melt-jet technology
Txij li thaum lub xyoo pua 21st, kev txhim kho ntawm cov thev naus laus zis yaj - dav hlau nonwovens hauv ntiaj teb tau nce qib los ntawm kev dhia thiab ciam teb.
Lub plhaub-core:
Ua rau cov ntaub tsis yog woven mos, tuaj yeem ua rau hauv cov khoom concentric, eccentric, thiab cov khoom zoo li tshwj xeeb. Feem ntau, lub plawv yog ua los ntawm cov khoom pheej yig, thiab cov polymer kim nrog cov khoom tshwj xeeb lossis xav tau yog txheej sab nraud, xws li polypropylene plawv thiab nylon txheej sab nraud kom ua rau cov fiber hygroscopic. Lub plawv yog polypropylene, thiab daim tawv nqaij sab nraud yog cov nplaum uas tsis tshua muaj melting point polyethylene lossis hloov kho polypropylene, hloov kho polyester, thiab lwm yam. Rau cov carbon dub conductive fiber, lub plawv conductive yog qhwv rau hauv nws.
Hom sib koom ua ke:
Cov ntaub tsis yog woven uas muaj qhov elasticity zoo feem ntau yog ua los ntawm ob lub polymers sib txawv lossis tib lub polymer nrog viscosities sib txawv rau hauv cov fibers ob-component sib luag. Qhov sib txawv thermal shrinkage ntawm cov polymers sib txawv tuaj yeem siv los ua cov fibers spirally crimped. Piv txwv li, 3M lub tuam txhab tau tsim cov khoom siv fiber ntau PET/PP uas yaj-sprayed. Vim muaj qhov shrinkage sib txawv, cov ntaub tsis yog woven tsim cov spiral crimp, uas ua rau cov ntaub tsis yog woven muaj qhov elasticity zoo heev.
Hom davhlau ya nyob twg:
qhov no yog nyob rau hauv peb-nplooj hom, hla hom thiab davhlau ya nyob twg compound lwm hom polymer, xws li ua antistatic, noo noo conductivity, conductive fiber tuaj yeem nyob rau sab saum toj ntawm cov khoom sib xyaw conductive polymer, tsis tsuas yog tuaj yeem ua conductive, conductive, antistatic, thiab txuag tau tus nqi ntawm conductive polymer.
Hom Microdenier:
Cov duab ntawm cov nplaim txiv kab ntxwv, cov khoom siv strip strip tuaj yeem siv tau, kuj tuaj yeem ua cov khoom siv hauv hiav txwv. Siv ob lub polymers tsis sib xws los tev tawm los ua lub network fiber zoo heev, lossis txawm tias lub network nanofiber, xws li kimberly-Clark's strip-type two-component fiber, yog lub network fiber zoo heev uas siv qhov tseeb tias cov fiber ob-component ua los ntawm ob lub polymers tsis sib xws tuaj yeem tev tawm tag nrho hauv tsawg dua ib pliag hauv dej kub. Hom sea-kob yuav yaj dej hiav txwv kom tau txais lub network zoo ntawm cov fibers kob.
Kev Sib Xyaws:
Nws yog ib lub vas sab ntawm cov fibers nrog cov ntaub ntawv sib txawv, xim sib txawv, cov fibers sib txawv, cov duab sib txawv, thiab txawm tias nrog cov tawv nqaij sib xyaw nrog ob qho tib si co-spinning thiab ob-component fibers, yog li ntawd cov fibers muaj txhua yam khoom xav tau. Hom no ntawm cov khoom siv fiber ntau-dav hlau ob-component lossis cov khoom siv fiber ntau sib xyaw ua ke tuaj yeem txhim kho cov khoom lim ntawm cov lim nruab nrab piv rau cov khoom siv fiber ntau, thiab ua rau cov khoom siv lim muaj cov khoom tiv thaiv hluav taws xob, kev ua hluav taws xob, cov khoom hygroscopic, cov khoom thaiv kev txhim kho, thiab lwm yam. Los yog ua rau cov fiber mesh sib txuas, fluffy, cua permeability txhim kho.
Cov khoom siv fiber ntau ob yam khoom uas ua los ntawm cov khoom siv molten shotcrete tuaj yeem ua kom tiav qhov tsis txaus ntawm cov polymer ib leeg, xws li polypropylene pheej yig heev, tab sis rau cov ntaub ntawv kho mob, nws tsis tiv taus kev raug hluav taws xob, yog li nws tuaj yeem siv polypropylene ua lub hauv paus, hauv nws txheej sab nraud los xaiv cov polymer tiv taus hluav taws xob uas tsim nyog qhwv sab nraud tuaj yeem daws qhov teeb meem ntawm kev tiv taus hluav taws xob. Yog li, cov khoom tuaj yeem pheej yig thiab ua tau raws li qhov yuav tsum tau ua haujlwm, xws li cov khoom siv hloov pauv cua sov thiab av noo rau lub cev ua pa hauv kev kho mob, uas tuaj yeem muab cov cua sov thiab av noo tsim nyog. Nws muaj qhov hnyav sib dua, pov tseg lossis yooj yim tua kab mob, pheej yig, tab sis kuj tuaj yeem ua lub luag haujlwm ntxiv ntawm kev tshem tawm cov pa phem lim. Nws tuaj yeem ua los ntawm ob lub network fiber ntau sib xyaw ua ke ob yam khoom sib xyaw ua ke.
Cov tawv nqaij core hom ob-component fiber tau txais yuav, lub core yog polypropylene thiab lub cortex yog nylon. Ob-component fibers kuj tuaj yeem ua rau muaj ib ntu tshwj xeeb, xws li peb-nplooj duab lossis ntau-nplooj duab, yog li lawv qhov chaw tuaj yeem loj dua. Lub caij no, cov polymers uas tuaj yeem txhim kho kev ua haujlwm lim dej kuj tuaj yeem siv rau hauv txheej saum npoo lossis qhov kawg ntawm cov fibers. Lub alkene lossis polyester fusible spray ob-component fiber mesh tuaj yeem ua rau cov kua columnar thiab cov lim roj. Melting spray ob-component fiber net kuj tuaj yeem siv rau lub taub lim luam yeeb; Lub hauv paus suction nyhuv yog siv los ua cov kua mem suction core siab. Lub hauv paus suction pas nrig rau kev khaws cia kua thiab infusion, thiab lwm yam.
Kev txhim kho ntawm cov thev naus laus zis yaj-blown nonwovens -- Melt-blown nanofibers
Yuav kom tsim tau cov nanofibers, cov qhov spinneret me dua li cov uas pom muaj nyob rau hauv cov khoom siv txhaj tshuaj yaj. NTI tuaj yeem me me li 0.0635 hli (piv txwv li 63.5 microns) lossis me me li 0.0025 ft. Cov vaj huam sib luag spinneret modular tuaj yeem ua ke rau qhov dav tag nrho ntau dua 3 m. Lub txoj kab uas hla ntawm cov tshuaj tsuag molten spun yog li ntawd yog li 500 nanometers. Cov fibers zoo tshaj plaws tuaj yeem muaj txog li 200 nanometers hauv txoj kab uas hla.
Vim tias cov khoom siv yaj thiab txau rau kev sib hloov nanofibers muaj qhov me me, yog tias tsis muaj kev ntsuas, cov zis yuav raug txo qis heev. Yog li ntawd, NTI siv txoj kev ntawm kev nce tus naj npawb ntawm cov qhov orifical, thiab txhua lub phaj spinneret muaj 3 lossis ntau kab ntawm cov qhov orifical. Los ntawm kev sib koom ua ke ntawm ntau yam khoom siv (nyob ntawm qhov dav), cov zis thaum lub sijhawm sib hloov tuaj yeem nce ntxiv heev. Qhov xwm txheej tiag tiag yog tias thaum siv 63.5 micron qhov, tus naj npawb ntawm cov qhov hauv ib kab ntawm spinnerets ib 'meter' yog 2880. Yog tias siv peb kab, tus naj npawb ntawm cov qhov hauv ib kab ntawm spinnerets ib 'meter' tuaj yeem ncav cuag 8640, yog li cov zis tuaj yeem sib piv rau qhov ntawm kev sib hloov cov fiber molten shotcrete ib txwm muaj.
Vim tias cov spinnerets nyias nyias uas muaj qhov loj thiab kim heev thiab yooj yim tawg (tawg thaum muaj kev nyuaj siab), cov tuam txhab tau tsim cov txheej txheem sib txuas tshiab los txhim kho qhov ceev ntawm cov spinnerets thiab tiv thaiv kev xau hauv qab kev nyuaj siab.
Nanometer fused - sprayed fiber siv tau ua lim dej, uas tuaj yeem txhim kho kev lim dej zoo heev. Kuj tseem muaj cov ntaub ntawv qhia tias vim tias cov fiber hauv nanometer melt-jet nonwovens yog thinner, cov ntaub melt-jet tuaj yeem ua ke nrog cov ntaub spunbonded nrog qhov hnyav gram sib dua, uas tseem tuaj yeem tiv taus tib lub taub hau dej siab, thiab cov khoom SMS ua los ntawm nws tuaj yeem txo qhov feem pua ntawm cov fiber yaj-jet.
Peb yog ib tugmeltblown nonwoven ntaub rau lub ntsej muag lub ntsej muagHoobkas, txais tos los sab laj nrog peb ~
Lub sijhawm tshaj tawm: Lub Xya Hli-28-2020