EN
Wanwei PVA 20-92(L) & PVA 092-35
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 (% ≥) |
20-92 (L) |
90.0-94.0 |
29.0-40.0 |
≤7.0 |
≤0.7 |
5~7 |
≥93.5 |
Tawv Tshaj Txhais
Ntawv Nyob Deb
Polyvinyl alcohol ua rau muaj kev nyob deb zoo, zoo rau lub ntiaj teb thiab ua tau ntau yam haujlwm nyob rau hauv ntawv pov los ntawm nws cov molecular zoo ib unique (ntawv loj ntawm cov hydroxyl groups) thiab cov lus zoo ntawv thiab kim.
Tov tawm rau hauv tsev pov
Polyvinyl alcohol tau siv rau kev ua glue nyob rau hauv tsev xaj, thay lub glue nyiaj uas dhau los. Nws tsis txhob noxious thiab zoo rau kev ntsuam cov khoom lag luam thiab cartons.
Tov tawm los ntawm tus kheej
Polyvinyl alcohol yog qhov siv tau hauv adhesive adhesive rau qhov kev lag luam, txhim kho qhov ua haujlwm ntau dua los ntawm kev hloov pauv cov khoom siv, ceev dua kev ua haujlwm, nthuav dav cov kev lag luam thiab txhim kho qhov chaw ua haujlwm.
Kev lag luam
Polyvinyl alcohol ua ob peev xwm ntawm kev cuab yeej tiv thaiv thiab kev lag luam hloov kho. Nws cov leej txawj ntau dhau los ntawm qhov siab ntawm alcoholysis, qhov siab ntawm polymerization thiab kev xa mus rau lwm hom.
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.
