Lub ntsiab siv ntawm PVA zaj duab xis thiab lub hnab PVA
Siv rau hauv kev tsim cov tshuaj polyvinyl acetal, roj av tiv thaiv cov kav dej thiab vinylon hluavtaws hluavtaws, cov khoom siv tshuaj kho, emulsifiers, ntawv pleev xim, tshuaj pleev ib ce, thiab lwm yam.
Cov dej-soluble polyvinyl cawv fiber ntau thiab cov txheej txheem npaj los ntawm, tau hais tias 100 qhov ntawm polyvinyl cawv muaj qhov dej ntawm polymerization ntawm 500 txog 2000 thiab ib qho degree ntawm alcoholysis ntawm 75-99 mol% siv, thiab dimethyl sulfoxide / dej = 90 rau 70: 200 mus rau 400 qhov ntawm cov roj tov sib xyaw ntawm 10 txog 30, ntxiv rau lub cev tsis muaj zog hauv cov kua hlau, txau ntawm qhov kub ntawm 80-120 ° C, qhov siab ntawm -0.01 txog -0.08 MPa, yaj rau 3 txog 4 cov xuab moos, tsim los rau hauv kev daws teeb meem, lim, Defoaming, lub cev qhuav thiab ntub dej thiab kho tom qab, tau txais dej-dej polyvinyl cawv fiber ntau, lub fiber muaj dej-dej kub txog 10 txog 90 ° C, lub zog ntawm ≥3.5 cN / dtex, ib qho tshuaj fiber ntau ntawm 1.5 mus rau 10 dtex, thiab elongation thaum so ntawm 15 txog 30.%, cov filaments tau ua tiav rau saum, sib xyaw nrog cov ntaub plaub, qhov qis qis, hemp thiab tshuaj fiber kom ua rau suav siab ntawm cov xov lossis hollow. yarns, los yog txiav mus rau hauv cov xov luv rau cov xov tsis-ntaub, embroidered puag fabrics thiab ntawv kos. Cov.
Nws muaj cov yam ntxwv zoo li nram no:
Cov dej khov ua ke PVA yog soluble hauv dej, thiab cov dej kub dua, ntau dua kev solubility, tab sis nws yuav luag insoluble hauv cov kuab tshuaj organic. Lub solubility ntawm PVA sib txawv nrog qhov degree ntawm alcoholysis thiab degree ntawm polymerization. Ib nrab alcoholysis thiab qib qis ntawm polymerization ntawm PVA yaj sai heev, thaum muaj alcoholysis tag nrho thiab qib siab ntawm polymerization PVA yaj qeeb. Txoj cai dav dav, qhov ntxim rau cov kev solubility ntawm PVA, cov neeg kawm ntawv ntawm alcoholysis ntau dua li cov neeg kawm ntawv ntawm polymerization. Cov txheej txheem kev tiv thaiv txheej txheem PVA yog nqa tawm hauv theem, uas yog: affinity wetting-o-infinite o-dissolution.
Kev tsim ua yeeb yaj kiab PVA tau yooj yim los ua ib qho kev ua yeeb yaj kiab, thiab zaj duab xis muaj cov cuab yeej zoo heev, thiab lub zog ntawm lub zog ntawm zaj duab xis nce ntxiv raws li qhov degree ntawm polymerization thiab qhov degree ntawm alcoholysis nce.
Adhesive PVA muaj qhov nplaum zoo rau hydrophilic cellulose. Feem ntau, cov qib siab dua rau ntawm polymerization thiab cov degree ntawm alcoholysis, qhov kev sib raug zoo ntawm daim ntawv cog lus muaj zog.
Thaum tshav kub-ruaj khov PVA hmoov yog rhuab mus txog 100 ° C, qhov tshwm sim hloov zuj zus. Ib feem dej cawv PVA pib yaj ntawm ib puag ncig 190 ° C thiab decomposed ntawm 200 ° C. Kev haus dej cawv tag nrho PVA pib yaj ntawm ib puag ncig 230 ° C thiab decomposes ntawm 240 ° C. Cov cua sov ua kom pom tseeb tau qhia tias qis dua qib ntawm polymerization, lub sai dua qhov hnyav txo; qib siab dua ntawm alcoholysis, lub sijhawm luv luv ua kom tiav lub sijhawm.
Kev kho mob PVA muaj qhov tshwj xeeb ntawm PVA05-88, PVAl7-88, PVA-124, thiab lwm yam. Alcoholysis degree ntawm thawj ob qhov tshwj xeeb yog (88 ± 2) (m01)%, thiab nruab nrab polymerization degree (n) yog 500 ~ 600 thiab 1700 ~ 1800; PVA. Alcoholysis degree ntawm 124 yog 98 rau 99 (m01)%, thiab qhov nruab nrab ntawm polymerization (n) yog 2,400 txog 2,500.
Kev nthuav dav ntawm cov kws tshaj lij tshuaj tshiab thiab kev txhawb nqa ntawm cov tshuaj ntau dua kev ua haujlwm yog ib qho ntawm cov haujlwm ua haujlwm rau kev tsim tshuaj suav tshuaj suav thiab kev sib xyaw thoob ntiaj teb. PVA muaj cov yam ntxwv ntawm kev ua kom yooj yim, nyab xeeb thiab tsis muaj kuab lom, tswj tau yooj yim ntawm cov khoom zoo, tus nqi qis thiab siv yooj yim. Yog li no, PVA yog qhov tshuaj ua tau zoo tshaj plaws nrog lub peev xwm rov kho dua.
Patented tag nrho biodegradable zaj duab xis thiab lub hnab PVA, tag nrho cov khoom yog tsim los ntawm cov cuab yeej siv casting, Nws txawv ntawm cov tshuab moulding khoom qub, tag nrho cov tshuab moulding khoom tsis puv biodegradable. Peb tuaj yeem tsim pva zaj duab xis thiab hnab txhua lub pob tshab thiab ntau yam xim.
Xav paub ntau ntxiv PVA zaj duab xis thiab hnab khoom thov mus saib peb:
http://www.joyful-printing.net/pva-bag/
http://www.joyful-printing.com/pva-bag/
Lub Hoobkas nyob hauv chuangxin Industrial Park ntawm Leiyang City, Hunan xeev. 2 teev txoj kev tsheb ciav hlau khiav ceev los ntawm Shenzhen. Nrog tus txiv neej pheej yig thiab kev tsim kho tus nqi, yog li peb tuaj yeem muab cov khoom zoo nrog cov nqi pheej yig rau peb cov qhua.
Muaj ntau qib PVA dej-soluble film ntau lawm kab, ntau lub hnab ntim khoom thiab cov hnab khw hnab ntau lawm kab hauv peb lub hoobkas. Peb tau tsim PVA zaj duab xis ntawm ntau yam kub. Ntawm lawv, PVA qhov kub-txias zaj duab xis thev naus laus zis yog lub ntiaj teb ua yeeb yaj kiab thev naus laus zis, thiab muaj cov R & D muaj zog pab neeg thiab pab pawg tswj nyob rau hauv peb lub hoobkas. Peb yog lub tuam txhab tsim khoom siv technology tshiab tshwj xeeb hauv kev tshawb nrhiav, kev tsim khoom thiab muag cov dej-soluble film (PVA-polyvinyl cawv zaj duab xis).
PVA dej-soluble zaj duab xis muaj cov nyom zoo tshaj plaws, dej solubility thiab ib puag ncig zoo. Nws yog ib qho ntawm kev ua tiav cov ntaub ntawv ntsuab tshaj plaws hauv xyoo tsis ntev los no. Nws tau txais dav dav los ntawm ib puag ncig cov cai thiab cov neeg siv hauv tsev thiab txawv teb chaws, thiab yog siv ntau hauv cov ntim khoom, paj ntaub paj ntaub thiab dej hloov luam ntawv.
Piv txwv li: tshuaj tua kab, tshuaj chiv, dyes, tshuaj ntxuav tes, cov tshuaj tua kab mob, tshuaj ntxhua khaub ncaws, tshuaj ntxhua khaub ncaws, tshuaj lom neeg rau kev tu vaj, thiab lwm yam, tuaj yeem siv ua rapeseed, cog noob hnab, hnab khaub ncaws, khoom noj thiab hnab ntxuav tsev kho mob, kev lag luam Kev ntim ntawm ntau cov khoom lag luam xws li cov khoom siv thiab cov khoom siv hluav taws xob kuj tseem siv tau rau cov ntaub ntawv paj ntaub padding, hloov dej luam ntawv, thiab zaj duab xis tawm. Nyob rau tib lub sijhawm, lub tuam txhab ua tiav zoo tsim cov hnab ntim khoom thiab cov khw yuav khoom ntim khoom lag luam rau ntau daim ntawv thov xyoo no. Cov hnab ntim khoom raug thiab lub hnab ua lag luam ntawm ntau yam tshwj xeeb.
Lub chaw thev naus laus zis tshwj xeeb hauv cov khoom lag luam zoo, kev txhim kho thev naus laus zis thiab kev tsim khoom tshiab, thiab tau cog lus los muab cov qhua tuaj noj mov nrog cov khoom lag luam thiab cov kev pab cuam txaus siab.