EN
Wanwei PVA 04-88(L) & PVA 088-04
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 (% ≥) |
04-88 (L) |
85.0-90.0 |
3.5-4.5 |
≤7.0 |
≤0.7 |
5~7 |
≥93.5 |
Tawv Tshaj Txhais
Daim Ua Rau Ntawv Hlau
Polyvinyl alcohol yog siv los tsim daim ua rau ntawv hlau, uas yuav hlau huv rau hauv dej thiab kho kom zoo rau qhov chaw nyob.
Vaj Tse Siv Lub Raj Thav Duab Siab
Polyvinyl alcohol ua tus kheej loj hauv vaj tse siv lub raj thav duab siab thiab muaj peev xwm ua kom zoo dua rau qhov sov thiab txhim kho qhov kev sib dhos ntawm lub raj hlau thiab cov ntsiab lus, ua kom qhov kev ua haujlwm tso cai thiab kho kom tsawg qhov kev txwv rau qhov chaw nyob.
Tsim Ntawv
Nyob rau hauv kev tsim ntawv, polyvinyl alcohol tau menjadi ib yam khoom siv rau kev ua kom zoo dua rau ntawv los ntawm qhov kev ua haujlwm ob peb hom ntawm "kev ua kom sov-sov ua daim ntawv hlau-kev ua kom zoo ntawm kev ntxig", qhov tseeb yog nws qhov ua kom zoo ntawm qhov sov, kev tiv thaiv dej thiab kev sau rau ntawv, thiab nws lub cev zoo, tsis muaj neeg ua rau lom neeg thiab ua kom hlau huv los ntawm kev hlau huv.
Emulsion
Polyvinyl alcohol yog ib tug tswj hnyi nyob rau hauv emulsions: raws li ib tug emulsifier, nws pab kom txog monomer dispersion; raws li ib tug stabilizer, nws kho kom tsis muag kev zoo ib yam ntawm qhov chaw; raws li ib tug thickener, nws cai los kho cov rheological yam ntxwv; thiab los ntawm film-forming effects, nws pab ua kom zoo dua lub peb ntawm film thiab kev sib kis. Qhov kev xaiv ntawm nws cov alcoholysis degree thiab polymerization degree yuav tects direct ntawm cov emulsion's water resistance, antifreeze thiab kev lag luam dajchaw performance, thiab qhov formula yuav tsum tau ua kom zoo siab dua raws li cov kev siv tseem ceeb.
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.
