Polypropylene (PP) non-woven npuag yog dav siv vim nws cov kev ua tau zoo, kev ua haujlwm yooj yim, thiab tus nqi qis. Tshwj xeeb tshaj yog nyob rau xyoo tas los no, nws tau siv dav hauv kev lag luam xws li kev kho mob, khaub ncaws, ntim cov ntaub ntawv, cov ntaub ntawv so, cov ntaub ntawv npog ua liaj ua teb, geotextiles, cov ntaub ntawv pom kev lag luam, thiab lwm yam, thiab muaj cov qauv los hloov nws cov khoom siv.
Vim yog cov qauv tsis-polar ntawm PP, uas yeej tsis muaj cov pab pawg hydrophilic, PP non-woven npuag muaj qhov pib tsis muaj dej nqus dej. Kev hloov kho hydrophilic lossis tiav yog tsim nyog los tsim cov khoom siv hydrophilic PP nonwoven.
I. Txoj kev npaj hydrophilic non-woven fabrics
Txhawm rau txhim kho hydrophilicity ntawm PP nonwoven fabrics, feem ntau muaj ob txoj hauv kev los txhim kho lawv qhov chaw ntub dej: kev hloov kho lub cev thiab tshuaj hloov kho.
Kev hloov kho tshuaj feem ntau hloov cov qauv molecular ntawm PP thiab ntxiv cov pab pawg hydrophilic rau cov saw hlau macromolecular, yog li hloov nws cov hygroscopicity. Muaj ntau txoj hauv kev xws li copolymerization, grafting, cross-linking, thiab chlorination.
Kev hloov kho lub cev feem ntau hloov cov qauv siab dua ntawm cov molecules los txhim kho hydrophilicity, feem ntau los ntawm kev hloov kho (ua ntej spinning) thiab kev hloov kho deg (tom qab spinning).
II. Mixed modification (spinning pre modification)
Raws li lub sij hawm sib txawv ntawm kev hloov kho additives, lawv tuaj yeem muab faib ua cov txheej txheem masterbatch, tag nrho cov txheej txheem granulation, thiab tig txheej txheej tus neeg sawv cev txhaj tshuaj.
(1) Ordinary xim masterbatch txoj kev
Qhov no yog ib txoj hauv kev tseem ceeb rau kev tsim cov khoom siv hydrophilic non-woven fabrics los ntawm cov tuam txhab tsis-woven npuag.
Ua ntej, cov khoom siv hydrophilic zoo tib yam tau ua rau hauv jellyfish hais los ntawm cov tuam txhab ntoo, thiab tom qab ntawd sib xyaw nrog PP spinning los tsim cov ntaub.
Qhov zoo: Kev tsim khoom yooj yim, tsis tas yuav ntxiv cov khoom siv, tsim rau me me batch zus tau tej cov nyuj, ntxiv rau nws muaj zog hydrophilic durability.
Qhov tsis zoo: qeeb hydrophilicity thiab kev ua haujlwm tsis zoo, feem ntau siv hauv cov ntaub spinning. Tus nqi siab, 2 mus rau 3 zaug siab dua qhov kev hloov kho saum npoo.
Tsis zoo spinnability yuav tsum tau kho cov txheej txheem. Qee cov neeg siv khoom nkim 5 tons ntawm cov ntaub los ntawm ob lub xim masterbatch factories yam tsis tau tsim cov khoom tiav.
(2) Txoj kev granulation tag nrho
Sib tov lub modifier, PP slices, thiab additives tusyees, granulate lawv nyob rau hauv lub ntsia hlau los tsim hydrophilic PP hais, ces yaj thiab tig rau hauv daim ntaub.
Qhov zoo: Kev ua haujlwm zoo, ua haujlwm ntev, thiab rov siv tau ntaub.
Qhov tsis zoo: Cov khoom siv ntsia hlau txuas ntxiv yog yuav tsum tau, ua rau tus nqi siab dua ib tuj thiab qeeb hydrophilicity, ua rau nws tsuas yog tsim nyog rau kev tsim khoom loj.
(3) Fangqian Txhaj
Ncaj qha ntxiv hydrophilic reagents, piv txwv li hydrophilic polymers, rau lub ntsiab ntsia hlau ntawm cov ntaub tsis-woven thiab sib tov nrog PP yaj rau ncaj qha spinning.
Qhov zoo: Cov nyhuv yog kav ntev thiab cov ntaub tuaj yeem rov qab siv dua.
Disadvantages: Vim tsis muaj peev xwm sib tov sib npaug, spinning feem ntau nyuaj thiab tsis muaj zog.
III. Nto hydrophilic xov (tom qab kho spinning)
Hydrophilic xov yog ib qho yooj yim, siv tau, thiab tus nqi qis rau kev tsim cov ntaub ntawv hydrophilic non-woven. Feem ntau ntawm peb cov tuam txhab tsis-woven npuag feem ntau siv cov qauv no. Cov txheej txheem tseem ceeb yog raws li nram no:
Online spunbond kub dov tsis-woven npuag - cov menyuam txheej lossis dej txau tus neeg saib xyuas hydrophilic - infrared lossis cua kub
Qhov zoo: Tsis muaj teeb meem spinnability, ceev hydrophilic nyhuv ntawm cov ntaub tsis-woven, high efficiency, tsis tshua muaj nqi, nws yog 1/2-1/3 ntawm tus nqi ntawm cov xim zoo tib yam masterbatch. Haum rau kev tsim khoom loj;
Disadvantage: Nws yuav tsum tau yuav cov khoom sib cais tom qab ua tiav, uas yog kim. Tom qab ntxuav peb zaug, lub sij hawm nkag mus rau dej yuav nce li ntawm 15 zaug. Tsis muaj peev xwm ua tau raws li qhov yuav tsum tau siv dua;
Ntau lawm;
Qhov zoo thiab qhov tsis zoo ntawm txoj kev no txiav txim siab tias nws tsuas yog siv rau cov khoom siv pov tseg uas yuav tsum tau muaj cov permeability siab thiab hydrophilicity, xws li cov ntaub ntawv huv, ntaub qhwv, ntaub so ntswg, thiab lwm yam.
Ⅳ.Siv Cov Txheej Txheem Hydrophilic Particle PPS03
Xav txog qhov zoo thiab qhov tsis zoo ntawm (-) thiab (ii) txoj kev, ib qho kev sib xyaw hydrophilic niam particle PPS030 tau tsim
Hom jellyfish no muaj cov yam ntxwv ntawm qhov nruab nrab ntau npaum li cas (zoo ib yam li cov jellyfish zoo tib yam), cov nyhuv nrawm, nrawm nrawm, cov nyhuv zoo, cov nyhuv ntev ntev, zoo ntxuav, tab sis tus nqi siab dua me ntsis (zoo ib yam li cov jellyfish zoo tib yam).
Zoo spinnability, tsis tas yuav kho cov txheej txheem ntau lawm.
Haum rau me me batch ntau lawm thiab siab ntxuav tsis kam, reusable khoom xws li hav zoov thiab ua liaj ua teb fabrics.
Cov kev ntsuas tseem ceeb ntawm hydrophilic PP non-woven npuag suav nrog kev nqus dej, kev sib cuag lub kaum ntse ntse, thiab cov nyhuv capillary.
(1) Tus nqi nqus dej: yog hais txog tus nqi ntawm cov dej absorbed ib chav tsev loj ntawm hydrophilic nonwoven npuag nyob rau hauv lub sij hawm txheem los yog lub sij hawm yuav tsum tau kom tag nrho ntub cov ntaub ntawv. Qhov kev nqus dej ntau dua, qhov txiaj ntsig zoo dua.
(2) Txoj kev sib cuag lub kaum sab xis: Muab cov ntaub ntawv hydrophilic PP tsis-woven rau ntawm lub khob huv si thiab du, nteg nws ncaj nraim rau ntawm qhov cub, thiab cia nws yaj. Tom qab melting, tshem lub khob phaj thiab txias nws ib txwm nyob rau hauv chav tsev kub. Ntsuas qhov sib npaug ntawm kev sib cuag lub kaum sab xis siv cov kev ntsuas ncaj qha. Qhov me dua lub kaum sab xis, qhov zoo dua. (PP non-woven npuag tsis muaj kev kho mob hydrophilic tom qab ncav cuag li 148 ° C).
Post lub sij hawm: Dec-04-2023