Cov khoom tseem ceeb ntawm lub qhov ncauj qhov ntswg yogpolypropylene non-woven npuag(tseem hu ua non-woven fabric), uas yog nyias los yog zoo li cov khoom tsim los ntawm textile fibers los ntawm kev sib txuas, fusion, los yog lwm yam tshuaj thiab siv tshuab. Kev kho mob qhov ncauj qhov ntswg feem ntau yog ua los ntawm peb txheej ntawm cov ntaub tsis-woven, uas yog spunbond non-woven fabric S, meltblown non-woven fabric M, thiab spunbond non-woven fabric S, hu ua SMS qauv; Cov txheej sab hauv yog ua los ntawm cov ntaub tsis-woven zoo tib yam, uas muaj cov tawv nqaij zoo nkauj thiab noo noo absorbing nyhuv; Cov txheej txheej sab nrauv yog ua los ntawm cov ntaub ntawv tsis muaj dej tsis muaj dej, uas muaj cov haujlwm ntawm kev thaiv cov kua dej thiab feem ntau yog siv los thaiv cov kua dej los ntawm cov neeg hnav lossis lwm tus; Cov txheej lim nruab nrab feem ntau yog ua los ntawm polypropylene yaj uas tsis yog-woven npuag uas tau electrostatically polarized, uas tuaj yeem lim cov kab mob thiab ua lub luag haujlwm txiav txim siab hauv kev thaiv thiab lim.
Lub tshuab npog ntsej muag cov kab ntau lawm zoo heev txhim kho kev tsim khoom ntawm lub qhov ncauj qhov ntswg. Cov yob loj ntawm polypropylene tsis-woven npuag raug txiav rau hauv cov yob me me thiab muab tso rau ntawm daim npog qhov ncauj ntau lawm kab. Lub tshuab teeb tsa lub kaum sab xis me me thiab maj mam nqaim thiab sib sau ua ke ntawm sab laug mus rau sab xis. Lub npog ntsej muag yog nias tiaj nrog lub ntsiav tshuaj, thiab cov txheej txheem xws li txiav, ntug sealing, thiab nias yog nqa tawm. Raws li kev ua haujlwm ntawm cov tshuab ua haujlwm tsis siv neeg, nws siv qhov nruab nrab tsuas yog li 0.5 vib nas this rau lub Hoobkas sib dhos kab los tsim lub npog ntsej muag. Tom qab kev tsim khoom, lub qhov ncauj qhov ntswg tau tshuaj tua kab mob nrog ethylene oxide thiab sab laug kom nyob twj ywm rau 7 hnub ua ntej muab ntim, ntim, ntim, thiab xa mus muag.
Cov khoom tseem ceeb ntawm lub qhov ncauj qhov ntswg - polypropylene fiber
Cov txheej lim dej (M txheej) nyob rau hauv nruab nrab ntawm lub qhov ncauj qhov ntswg kho mob yog cov ntaub qhwv lub tshuab lim dej, uas yog cov txheej txheem tseem ceeb tshaj plaws, thiab cov khoom tseem ceeb yog polypropylene yaj cov khoom tshwj xeeb. Cov khoom no muaj cov yam ntxwv ntawm ultra-high flow, tsawg volatility, thiab nqaim molecular hnyav tis. Cov txheej lim tsim muaj zog lim, tiv thaiv, rwb thaiv tsev, thiab roj nqus cov khoom, uas tuaj yeem ua tau raws li cov qauv sib txawv rau cov naj npawb ntawm cov fibers hauv ib cheeb tsam thiab thaj tsam ntawm cov txheej txheem ntawm cov qhov ncauj qhov ntswg kho mob. Ib tuj ntawm lub siab melting point polypropylene fiber ntau tuaj yeem tsim tau ze li ntawm 250000 polypropylene N95 qhov ncauj qhov ntswg tiv thaiv kev kho mob, lossis 900000 txog 1 lab lub ntsej muag phais pov tseg.
Cov qauv ntawm polypropylene yaj cov khoom siv lim dej yog tsim los ntawm ntau qhov kev hla hla cov fibers stacked nyob rau hauv cov lus qhia random, nrog rau qhov nruab nrab fiber ntau txoj kab uas hla ntawm 1.5 ~ 3 μ m, kwv yees li 1/30 ntawm txoj kab uas hla ntawm tib neeg cov plaub hau. Cov txheej txheem pom ntawm polypropylene yaj cov khoom siv lim dej feem ntau suav nrog ob yam: cov khoom siv hluav taws xob thiab electrostatic adsorption. Vim yog cov fibers ultrafine, thaj chaw loj tshwj xeeb, qhov porosity siab, thiab qhov nruab nrab qhov pore me me, polypropylene yaj cov ntaub ntawv lim dej muaj cov kab mob zoo thiab pom cov teebmeem. Polypropylene yaj cov khoom siv lim dej muaj kev ua haujlwm ntawm electrostatic adsorption tom qab kho electrostatic.
Qhov loj ntawm tus kabmob tshiab no yog me me, txog 100 nm (0.1 μ m), tab sis tus kab mob no tsis tuaj yeem nyob ntawm nws tus kheej. Nws feem ntau muaj nyob rau hauv cov kua qaub thiab cov tee thaum txham, thiab qhov loj ntawm cov tee dej yog li 5 μ m. Thaum tus kab mob uas muaj cov dej ntws tawm ntawm cov meltblown npuag, lawv yuav tiv thaiv lawv cov txheej txheem ntawm cov txheej txheem tuab thiab ua tiav cov nyhuv thaiv. Vim qhov tseeb tias tus kab mob no nyuaj heev rau kev tshem tawm ntawm kev ntxuav tom qab raug ntes los ntawm ultrafine electrostatic fibers, thiab kev ntxuav kuj tuaj yeem ua rau muaj peev xwm nqus tau electrostatic, hom npog ntsej muag no tsuas siv tau ib zaug xwb.
Nkag siab txog Polypropylene Fiber
Polypropylene fiber, tseem hu ua PP fiber, feem ntau hu ua polypropylene hauv Suav teb. Polypropylene fiber ntau yog ib qho fiber ntau ua los ntawm polymerizing propylene ua raw khoom los ua ke polypropylene, thiab tom qab ntawd ua haujlwm ntawm cov txheej txheem spinning. Lub ntsiab ntau yam ntawm polypropylene muaj xws li polypropylene filament, polypropylene luv fiber, polypropylene split fiber, polypropylene expanded filament (BCF), polypropylene industrial yarn, polypropylene non-woven npuag, polypropylene luam yeeb cab, thiab lwm yam.
Polypropylene fiber ntau yog siv rau cov ntaub pua plag (cov ntaub pua plag hauv qab thiab suede), cov ntaub zoo nkauj, rooj tog fabrics, ntau txoj hlua strips, nuv ntses nets, roj absorbing xav, lub tsev cov ntaub ntawv, cov ntaub ntawv ntim, thiab industrial fabrics xws li lim ntaub, hnab ntaub, thiab lwm yam. Polypropylene yuav siv tau raws li luam yeeb lim thiab tsis-woven thiab lwm yam ntaub ntawv huv si; Polypropylene ultrafine fibers yuav siv tau los tsim high-end khaub ncaws fabrics; Lub quilt ua los ntawm polypropylene hollow fibers yog hnav, sov, thiab muaj elasticity zoo.
Txoj kev loj hlob ntawm Polypropylene Fiber
Polypropylene fiber ntau yog ib hom fiber ntau uas pib muaj kev lag luam hauv xyoo 1960s. Xyoo 1957, Italian's Natta et al. thawj tsim isotactic polypropylene thiab ua tiav kev lag luam ntau lawm. Tsis ntev tom qab ntawd, lub tuam txhab Montecatini tau siv nws los tsim cov polypropylene fibers. Xyoo 1958-1960, lub tuam txhab tau siv polypropylene rau fiber ntau thiab hu ua Meraklon. Tom qab ntawd, kev tsim khoom kuj tau pib hauv Tebchaws Meskas thiab Canada. Tom qab xyoo 1964, polypropylene zaj duab xis cais fibers rau bundling tau tsim thiab ua rau hauv textile fibers thiab ntaub pua plag yarns los ntawm nyias zaj duab xis fibrillation.
Nyob rau xyoo 1970, cov txheej txheem luv luv thiab cov khoom siv tau txhim kho cov txheej txheem ntawm polypropylene fibers. Nyob rau tib lub sijhawm, nthuav cov filament txuas ntxiv tau pib siv hauv cov ntaub pua plag kev lag luam, thiab kev tsim cov polypropylene fiber ntau tau tsim sai heev. Tom qab xyoo 1980, txoj kev loj hlob ntawm polypropylene thiab cov thev naus laus zis tshiab rau kev tsim cov khoom siv polypropylene, tshwj xeeb tshaj yog kev tsim cov khoom siv metallocene catalysts, txhim kho qhov zoo ntawm polypropylene cob. Vim qhov kev txhim kho ntawm nws cov stereoregularity (isotropy txog li 99.5%), qhov zoo ntawm cov polypropylene fibers tau zoo heev.
Nyob rau hauv nruab nrab-1980s, polypropylene ultra-fine fibers hloov ib co paj rwb fibers rau textile fabrics thiab non-woven fabrics. Tam sim no, kev tshawb fawb thiab kev loj hlob ntawm polypropylene fibers kuj tseem muaj zog heev hauv ntau lub teb chaws thoob ntiaj teb. Qhov nrov thiab kev txhim kho ntawm cov tshuab fiber ntau sib txawv tau nthuav dav heev hauv daim ntawv thov ntawm polypropylene fibers.
Cov qauv ntawm polypropylene fibers
Polypropylene yog ib qho loj molecule nrog carbon atoms ua cov saw tseem ceeb. Nyob ntawm qhov kev npaj ntawm nws cov methyl pawg, muaj peb hom qauv ntawm peb sab: random, iso li niaj zaus, thiab meta tsis tu ncua. Cov pa roj carbon atoms ntawm cov saw tseem ceeb ntawm polypropylene molecules yog nyob rau hauv tib lub dav hlau, thiab lawv sab methyl pawg tuaj yeem teem caij sib txawv ntawm qhov sib txawv ntawm thiab hauv qab ntawm lub dav hlau loj.
Kev tsim cov polypropylene fibers siv isotactic polypropylene nrog ib qho isotropy ntau dua 95%, uas muaj crystallinity siab. Nws cov qauv yog cov hlua khi tsis tu ncua nrog peb-dimensional tsis tu ncua. Cov saw tseem ceeb ntawm cov molecule yog tsim los ntawm carbon atom twisted chains ntawm tib lub dav hlau, thiab sab methyl pawg yog nyob rau tib sab ntawm lub ntsiab saw dav hlau. Qhov no crystallization tsis yog tsuas yog ib tug niaj hnub qauv ntawm ib tug neeg chains, tab sis kuj muaj ib tug niaj hnub saw stacking nyob rau hauv txoj cai kaum kev taw qhia ntawm cov saw axis. Lub crystallinity ntawm thawj polypropylene fibers yog 33% ~ 40%. Tom qab ncab, crystallinity nce mus rau 37% ~ 48%. Tom qab kev kho cua sov, lub crystallinity tuaj yeem ncav cuag 65% ~ 75%.
Polypropylene fibers feem ntau yog ua los ntawm txoj kev yaj spinning. Feem ntau, cov fibers yog du thiab ncaj nyob rau hauv longitudinal kev taw qhia, tsis muaj kab txaij, thiab muaj ib tug ncig-section. Lawv kuj tau spun rau hauv cov fibers tsis tu ncua thiab cov fibers sib xyaw.
Cov yam ntxwv ntawm kev ua haujlwm ntawm polypropylene fibers
Kev ntxhib los mos
Qhov loj tshaj plaws ntawm polypropylene yog nws lub teeb kev ntxhib los mos, nrog qhov ceev ntawm 0.91g / cm³, uas yog sib dua li dej thiab tsuas yog 60% ntawm qhov hnyav ntawm paj rwb. Nws yog qhov sib sib zog nqus ntau yam ntawm cov tshuaj fiber ntau, 20% sib dua li nylon, 30% sib zog dua polyester, thiab 40% sib zog dua viscose fiber. Nws yog tsim los ua cov khaub ncaws ua kis las dej.
Lub cev muaj zog
Polypropylene muaj lub zog siab thiab tawg ntho ntawm 20% -80%. Lub zog txo qis nrog qhov nce ntawm qhov kub thiab txias, thiab polypropylene muaj lub siab pib modulus. Nws elastic rov muaj peev xwm zoo ib yam li nylon 66 thiab polyester, thiab zoo dua li acrylic. Tshwj xeeb tshaj yog, nws muaj peev xwm rov qab tau sai dua, yog li polypropylene ntaub kuj hnav-resistant ntau dua. Polypropylene npuag tsis yooj yim rau wrinkling, yog li nws yog ruaj khov, khaub ncaws loj yog qhov ruaj khov, thiab tsis yooj yim deformed.
Moisture absorption thiab dyeing kev ua haujlwm
Ntawm cov hluavtaws fibers, polypropylene muaj qhov nqus dej phem tshaj plaws, nrog yuav luag xoom noo noo rov qab raws li cov txheej txheem atmospheric. Yog li ntawd, nws lub zog qhuav thiab ntub dej thiab lub zog tawg yuav luag sib npaug, ua rau nws tshwj xeeb yog tsim rau kev ua nuv ntses nets, hlua, lim ntaub, thiab tshuaj tua kab mob rau cov tshuaj. Polypropylene yog nquag siv hluav taws xob zoo li qub thiab pilling thaum siv, nrog tus nqi qis. Cov ntaub yog yooj yim los ntxuav thiab qhuav sai, thiab kuj yog ib qho nyuaj. Vim nws qhov tsis zoo ntawm cov dej noo tsis zoo thiab ua rau lub cev tsis muaj zog thaum hnav, polypropylene feem ntau sib xyaw nrog cov fibers nrog cov dej noo siab thaum siv hauv cov khaub ncaws fabrics.
Polypropylene muaj cov qauv macromolecular tsis tu ncua thiab siab crystallinity, tab sis tsis muaj cov pab pawg ua haujlwm uas tuaj yeem khi nrog cov xim molecules, ua rau dyeing nyuaj. Ordinary dyes tsis tuaj yeem xim nws. Kev siv cov dyes dispersed rau dye polypropylene tsuas tuaj yeem ua rau cov xim tsis zoo thiab cov xim tsis zoo. Kev txhim kho cov dyeing kev ua tau zoo ntawm polypropylene tuaj yeem ua tiav los ntawm txoj hauv kev xws li graft copolymerization, thawj cov kua xim xim, thiab kev hloov kho hlau.
Cov khoom siv tshuaj
Polypropylene muaj kev tiv thaiv zoo rau cov tshuaj, kab mob, thiab pwm. Nws ruaj khov tiv thaiv cov kua qaub, alkali, thiab lwm yam tshuaj lom neeg yog superior rau lwm cov hluavtaws fibers. Polypropylene muaj kev tiv thaiv zoo rau cov tshuaj corrosion, tshwj tsis yog cov concentrated nitric acid thiab concentrated caustic soda. Nws muaj kev tiv thaiv zoo rau cov kua qaub thiab alkali, ua rau nws tsim nyog siv los ua cov khoom siv lim thiabntim khoom.Txawm li cas los xij, nws qhov ruaj khov rau cov kuab tshuaj organic yog me ntsis tsis zoo.
Thaum tshav kub kub kuj
Polypropylene yog ib qho thermoplastic fiber uas muaj qhov muag muag qis thiab cov ntsiab lus melting dua lwm cov fibers. Lub softening point kub yog 10-15 ℃ qis dua lub melting point, ua rau tsis zoo tshav kub kuj. Thaum lub sij hawm dyeing, xov, thiab siv polypropylene, nws yog ib qho tsim nyog yuav tsum tau them sai sai rau kev tswj qhov kub thiab txias kom tsis txhob muaj cov yas deformation. Thaum rhuab nyob rau hauv qhuav tej yam kev mob (xws li kub tshaj 130 ℃), polypropylene yuav raug tawg vim oxidation. Yog li ntawd, tus neeg sawv cev tiv thaiv kev laus (kub stabilizer) feem ntau ntxiv rau hauv kev tsim cov polypropylene fiber ntau los txhim kho kev ruaj ntseg ntawm polypropylene fiber. Tab sis polypropylene muaj kev tiv thaiv zoo dua rau ya raws thiab cua sov. Boil nyob rau hauv boiling dej rau ob peb teev yam tsis muaj deformation.
Lwm yam kev ua tau zoo
Polypropylene muaj lub teeb tsis zoo thiab huab cua tsis kam, nws yooj yim rau kev laus, tsis tiv taus ironing, thiab yuav tsum tau muab cia kom deb ntawm lub teeb thiab kub. Txawm li cas los xij, cov cuab yeej los tiv thaiv kev laus tuaj yeem txhim kho los ntawm kev ntxiv cov tshuaj tiv thaiv kev laus thaum lub sij hawm spinning. Tsis tas li ntawd, polypropylene muaj cov khoom siv hluav taws xob zoo, tab sis nws yooj yim rau hluav taws xob zoo li qub thaum ua haujlwm. Polypropylene tsis yooj yim rau hlawv. Thaum cov fibers shrinkage thiab yaj nyob rau hauv ib tug nplaim taws, cov nplaim hluav taws yuav tua nws tus kheej. Thaum kub hnyiab, nws tsim cov pob tshab nyuaj nrog me ntsis asphalt tsw.
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-14-2024