EN
Wanwei PVA 24-99(L) & PVA 100-72
Piav qhia
Saib xyuas
PVA qhov zoo nkauj yog dawb flake, granular lossis powdery solid (low-alkali alcoholysis txheej) lossis dawb flocculent solid (high-alkali alcoholysis txheej). Nws yog ib hom polymer soluble hauv dej nrog kev siv dav, thiab nws cov haujlwm yog nyob nruab nrab ntawm yas thiab rubber. Nws muaj qhov tshwj xeeb muaj zog adhesion, film flexibility, roj tiv thaiv, surface activity, gas barrier, wear resistance thiab lwm yam.
Cov ntaub ntawv thev naus laus zis
Khoom |
Hydrolysis (mol%) |
Viscosity (mpa.s) |
Volatile (%≤) |
Ash (%≤) |
PH (Nqe) |
Purity (% ≥) |
24-99（L） |
99.0-100.0 |
65.0-85.0 |
≤7.0 |
≤1.0 |
5~7 |
≥93.5 |
Tawv Tshaj Txhais
Kev Pov Daim Ntawv Thiab Kev Kuaj
Polyvinyl alcohol tau los ntawm qhov ntau tshwj xeeb hauv kev pov daim ntawv vim li qhov zoo hauv kev ua lub voj voos, kev nyob deb thiab kev raug zoo nkawv. Nws txhawm rau zoo dua li qhov zoo hauv kev lag luam (siab siab, zoo siab) tab sis kuj tso cai rau cov daim ntawv muaj qhov zoo hauv kev kho mob (acetalization).
Processing Daim Ntawv
Nyog kev tsim kho ntawv, cov polyvinyl alcohol yog ib qho khoom siv zoo heev uas tuaj yeem pab huvav kom zoo dua thiab ua haujlwm zoo dua los ntawm kev ua nrog tib lub zog ntawm "qeeb pov ntawv-kev nyob rau hauv-sib txuas ntawv". Nws muaj peev xwm zoo heev hauv kev huvav, kev sau ntawv, kev tiv thaiv dej thiab kev saib xyuas pob ze, thiab tseem yog ib yam uas tsis muaj leej twg hnav tau hauv kev tsim kho ntawv zoo thiab ntawv ua haujlwm siab.
Cov txog xyoo
Alcohol Polyvinyl hauv kev ncaj ncees tuaj yeem ua raws li qhov kev pab tiv thaiv, sib txuas zoo thiab ua rau yooj yim dua. Nws cov nuj nqo ua haujlwm yog tiv thaiv kho mob, sib txuas zoo thiab ua rau yooj yim dua, thiab nws yog ib qho tsim nyog rau cellulose substrates.
Forming board adhesive
Polyvinyl alcohol yog qhov adhesive nyob rau hauv kev tsim tawm board adhesives los ntawm nws qhov siab bonding strength, kho tau cov water resistance thiab environmental safety. Nws yog qhov zoo rau cov chaw xws li gypsum boards thiab wood chip boards uas xav tau qhov mechanical properties thiab environmental friendliness.
Pob
25 kg/hnab.
Khaws
Thov zam kev tsim lossis khaws cov av. Ua kom muaj kev ceev faj tiv thaiv cov hluav taws xob, nplai/kev nplai txhua lub cuab yeej. Thov zam kev tiv tauj nrog cov khoom kub lossis molten. Tsis txhob hnoos av, fumes lossis vapors los ntawm cov khoom kub. Siv cov huab cua tawm hauv cheeb tsam txheej. Ua kom muaj kev ceev faj tiv thaiv hnub ci ncaj thiab nag txhuam thaum thauj. Khaws cov tsheb thauj khoom kom huv. Thov zam kev puas tsuaj ntawm cov pob thiab khaws deb ntawm cov impurities.
