Cov yam ntxwv ntawm pva zaj duab xis thiab hnab
1 Kev tiv thaiv ib puag ncig
Cov khoom lag luam PVA yog cov khoom siv ntsuab. Cov tuam tsev muaj feem cuam tau ntsuas hais tias kev siv lom neeg oxygen (BOD) ntawm PVA yog me dua li cov hmoov txhuv nplej siab. Tom qab 5 hnub ntawm biodegradation ntawm Airworth PVA cov khoom lag luam los ntawm Asmeskas Cov Khoom Siv Cua, ntsuas ntsuas BOD tsawg dua 1% ntawm thawj BOD. Kev ntsuam xyuas roj ntsha tau qhia tias PVA tsis yog tshuaj lom.
Raws li qhov cuam tshuam txog kev ua haujlwm degradation, PVA cov khoom siv muaj ob qho kev puas tsuaj ntawm cov dej thiab yam muaj sia. Nws yog thawj zaug yaj nyob rau hauv dej los tsim cov tshuaj ua kua gel uas nkag mus rau hauv cov av, uas tuaj yeem nce cov txheej txheem sib xyaw, roj permeability thiab dej tuav ntawm cov av, thiab tshwj xeeb tshaj yog haum rau kev hloov kho xuab zeb. Cov khoom siv PVA hauv av tuaj yeem decomposed los ntawm cov kab mob hauv cov av thiab thaum kawg nws kuj ua rau CO2 thiab H2O.
2 Dej solubility
Qhov hnyav ntawm PVA yog dej, tab sis solubility rau dej yog qhov cuam tshuam loj los ntawm cov degree ntawm polymerization, tshwj xeeb tshaj yog los ntawm cov degree ntawm alcoholysis. Thaum lub degree ntawm alcoholysis yog 88% lossis tsawg dua, nws yuav luag tag nrho yaj hauv qhov dej kub ntawm qhov kub li ntawm 20 ° C. Raws li cov degree ntawm alcoholysis nce, lub solubility txo ruaj, thiab kev tshem tawm ntawm cov dej cawv siab PVA hauv dej yog qhov tsawg heev.
Cov dej solubility ntawm PVA zaj duab xis muaj feem xyuam nrog cov tuab ntawm zaj duab xis thiab qhov kub ntawm dej. Cov ntaub ntawv cuam tshuam txog cov ntaub ntawv muaj raws li nram no:
Ua rau dej kub kom pib lub sij hawm yaj
(feeb) teb kev xaus lub sijhawm
(feeb)
Chav sov soluble zaj duab xis 25 ° C 0.5 15
Nruab nrab kub soluble zaj duab xis 65 ° C 0.5 10
Cov yeeb yaj kiab kub-kub melting yog qhov tsis txaus ntseeg kiag li 40 ° C, ua kom yaj tag nrho saum 85 ° C 0.5 10
Lus Cim: 1, zaj duab xis tuab: 20μm, 2, nyob rau hauv cov dej tsis zoo.
3 Lub zog thiab tiv thaiv huab cua
PVA zaj duab xis tau zoo toughness, siab tensile lub zog thiab rhuav lub zog. Nws muaj lub zog tensile zoo tshaj plaws, tiv thaiv huab cua zoo thiab kev pab lub neej ntev. Lub zog lub zog ntawm ntau cov yeeb yaj kiab muaj raws li hauv qab no:
PVA zaj duab xis PT zaj duab xis (cellophane) PE zaj duab xis PP zaj duab xis PVC zaj duab xis
Tensile zog (MPa) 44.1 ~ 63.7 54.9 ~ 131.4 17.3 ~ 19.1 45.1 ~ 53.9 20.6 ~ 17.6
Elongation tus nqi (%) 150 ~ 400 15 ~ 25 50 ~ 600 200 ~ 600 5 ~ 25
4 Tawm thiab hlau plating
PVA zaj duab xis muaj qhov sib txuam tsis tshua muaj rau cov yas uas muaj hydrophobic, thiab muaj cov khoom zoo (tev tawm) rau ntau cov ntaub ntawv organic muaj qhov polarity me me.
Zaj yeeb yaj kiab PVA tuaj yeem plated nrog txhuas hauv qab nqus ntawm 1.33 x 10 txog 266 x 10 Pa, thiab cov khoom lag luam muab tso rau hauv dej ntawm 30 ° C rau 24 teev, thiab txheej plating tsis tau tev tawm.
5 Transparency thiab ci ntsa iab
Lub pob tshab thiab ci ntsa iab ntawm PVA zaj duab xis zoo dua li lwm cov yeeb yaj kiab.
PVA zaj duab xis PT zaj duab xis (cellophane) PVC zaj duab xis PET zaj duab xis
Hloov Npe% 90.1 60.5 50.4 57.8
Txhab% 81.5 60.5 79.5 22
6 ya raws permeability
Lub ya raws permeability ntawm PVA zaj duab xis zoo ib yam li ntawm cellophane. Nws yog cov zaj duab xis nrog lub zog noo noo siab permeability. Nws tsis tsim cov roj av ntws thaum ntim cov khoom kub thiab ntub. Cov ntaub ntawv ntsuas raws li JIS-Z1503 yog raws li hauv qab no:
PVA zaj duab xis PT zaj duab xis (cellophane) PVC zaj duab xis PET zaj duab xis
Noo noo permeability 1500 ~ 2000 1300 ~ 2000 120 ~ 180 35 ~ 180
7 Kev Teeb Meem
PVA zaj duab xis muaj qhov zoo tshaj plaws oxygen barrier zog nyob rau hauv cov neeg mob qhuav, thiab nws cov pa permeability coefficient yog qhov qis tshaj plaws ntawm ntau cov yeeb yaj kiab.
Qhov ntau ntawm hydroxyl pawg (-OH) muaj nyob rau hauv cov xov molecular ntawm PVA. Nyob rau hauv qhov chaw muaj huab cua noo, cov hydroxyl pawg tau yooj yim tsim cov ntawv cog lus hydrogen nrog dej lwg me me, uas ua rau muaj kev hloov pauv hauv cov qauv ntawm PVA kev sib xyaw, uas zoo heev txo cov teeb meem ntawm PVA. Raws li tus txheeb ze vaum nce, qhov dej ntawm cov pa permeation nce siab.
PVA zaj duab xis muaj lub zog permeability noo noo thiab ammonia, tab sis muaj cov khoom zoo dua rau cov pa oxygen, nitrogen, hydrogen, helium, argon thiab carbon dioxide. Qhov thaiv tus nqi ntawm cov pa oxygen hauv qhov ib puag ncig siab yog hais txog ntau yam. 1000 zaug ntawm cov yeeb yaj kiab yas thiab 300 zaug ntawm polypropylene zaj duab xis. Zaj yeeb yaj kiab PVA tuaj yeem siv los tswj cov khoom ua ke ntawm cov khoom ntim thiab nws cov ntxhiab tsw. Txoj Kev Salame yog siv los kuaj qhov permeability ntawm txawv plastics:
Yas ntau yam Parmachor tus nqi Cov huab cua permeability (cc.20μ / m2 • 24h • 1atm) Cov nqi ntsuas Kev ntsuas qhov ntsuas
N2 O2 CO2
PVA 160 0.02 0.06 0.21 0.2
PVCD 97 0.6 3.6 12 2
PET 68 21 80 310 40
PVC 61 100 200 200 300 300
HDPE 39 800 2000 12000 2500
PP 31 1600 5400 20000 3000
PS 27 2400 8000 26000
LDPE 26 3200 10000 36000 10000
8 Antistatic
Ntau cov yeeb yaj kiab yas muaj lub zog zoo, thaum PVA zaj duab xis yuav luag tsis muaj hluav taws xob zoo li qub. Thaum cov khoom ntim tau ntim nrog siv cov PVA zaj duab xis, nws tsis ua rau kom muaj yas txo lossis electrostatic plua plav vim hluav taws xob zoo li qub.
PVA zaj duab xis PT zaj duab xis (cellophane) PVC zaj duab xis PE zaj duab xis PET zaj duab xis
Qhov hluav taws xob zoo li qub 1.2V 1.3V 40.5V 98.6V 120.6V
9 Kev ua tiav kev luam ntawv
PVA zaj duab xis muaj xim zoo nkauj xim thiab tus cwj pwm luam ntawv, uas yog qhov sib txig tsis tau ntawm cov zaj duab xis yas uas twb muaj lawm tsuas yog luam tawm los ntawm number case. Nws tuaj yeem siv rau kev hloov dej luam ntawv, xws li iav, ceramics, ntim hluav taws xob, khoom siv tsheb, thiab lwm yam Xim luam ntawv. Tib lub sijhawm, zaj duab xis PVA muaj qhov muaj zog polarity thiab tuaj yeem ua tiav yam tsis muaj EDM. Nws kuj tseem siv dav hauv kev lag luam luam ntawv tshwj xeeb, xws li hloov dej hloov zaj duab xis.
10 Cua sov ua kom pom tseeb
Zaj duab xis-dej soluble muaj cov cuab yeej zoo tshav kub-sealing thiab yog qhov tsim nyog rau kev ua haujlwm thaum tshav kub sealing thiab high-frequency tshav kub sealing. Lub tshav kub sealing lub zog muaj feem xyuam nrog qhov ntsuas kub, av noo, siab, lub sijhawm thiab lwm yam, thiab feem ntau ntau dua 200 g / cm 2.
11 Roj ua hauj thiab hnyav kuj
PVA zaj duab xis muaj cov roj ua tau zoo (cov roj zaub, roj tsiaj, roj ntxhia), organic solvent resistance thiab carbohydrates. Txawm li cas los xij, lub hauv paus muaj zog, muaj zog acids, chlorine radicals thiab lwm yam khoom uas tuaj yeem muaj kev cuam tshuam nrog PVA (xws li borax, boric acid, qee yam dyes, thiab lwm yam) tsis haum rau PVA zaj duab xis ntim.
Cov roj a haum haum nplai
Roj xeem tej yam kev mob PVA PET OPP PE OPS
Ncuav roj 20 ° C, 10 hnub 0 1.1 1.1 4.7
Diesel roj 40 ° C, 30 hnub 0 3.2 5.2 3.5 2.8
Salad roj 40 ° C, 30 hnub 0 1.8 3.1 4.6 1.5
B Kuab haum nplai
Solvent PVA EVAL CPP OPP TSIAJ
Toluene 3 120 3740 6120 670
Isopropyl cawv 80 3440 600 430 1070
Ethyl acetate 10 240 2950 3700 1520
Methyl ethyl ketone 7 500 2070 2790 1560
Tag nrho kom muaj nuj nqis 100 4300 9360 13040 4820
12 Tiv thaiv cov tshuaj tsw qab thiab tiv thaiv kom txhob sublimation
Zaj duab xis PVA tau zoo tshaj plaws tshuaj tsw qab thiab kev ua tau zoo heev hauv kev tiv thaiv sublimation ntawm pob. PVA zaj duab xis ntim tsis tsuas yog tswj cov tshuaj tsw qab ntawm lub pob kom zoo, tab sis kuj tiv thaiv lub pob los ntawm cuam tshuam los ntawm cov ntxhiab tsw sab nraud.
Cov tshuaj tsw qab ntsuas lub rooj
Txheem Rose essence (1ml) Txiv qaub essence (1ml) Kua tsw (1ml) Cua roj (1ml) Kua ntses (2ml) Tshuaj yej (3g) Cigarette (3g)
PP
(25μm) 1 teev 1 teev 1 teev 1 teev 3 teev 1 teev 1 hnub
PP / PE (65μm) 3 teev 1 hnub 1 hnub 1 teev 1 vas thiv 1 vas thiv 1 vas thiv
PVA / PP (32μm) 1 lub lis piam 1 lub lis piam 1 lub lim tiam 2 hnub 4 lub lis piam
Tshaj 4 lub lis piam
Tshaj 4 lub lis piam
saum toj no
peb muab patented puv 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, tag nrho cov tshuab moulding khoom tsis puv biodegradable. Peb tuaj yeem tsim pva zaj duab xis thiab hnab hauv pob tshab thiab pob tshab xim. thiab PVA zaj duab xis yog du ntau dua li cov tsoos tshuab moulding khoom.
peb kuj muab cov khoom siv organic puv ntim biodegradable zaj duab xis thiab hnab nrog cov khoom muaj ntawv pov thawj muaj txheej txheem thiab cov txheej txheem.
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/ eng xwb