EN
SINOPEC PVA 20-99 & PVA 100-35
Piav qhia
Saib xyuas
PVA yog ib qho polymer linear nrog cov qhuav hydroxyl secondary. Nws muaj qhov zoo solubility, thermal stability, chemical resistance, storage stability thiab film formation.
Cov ntaub ntawv thev naus laus zis
Khoom |
Hydrolysis (mol%) |
Viscosity (mpa.s) |
Volatile (%≤) |
Ash (%≤) |
PH (Nqe) |
Purity (% ≥) |
100-35 |
99.0-100.0 |
35.0-43.0 |
≤5.0 |
≤0.7 |
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).
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.
Tsis lawm
Alcohol Polyvinyl tau ua rau muaj "kev nthuav dav" hauv cov roj ntxuav los ntawm 4 qhov: film-forming reinforcement, interface bonding, kev lag luam thiab kev kho tshuaj nrog. Qhov tseeb ntawm nws yog qhov zoo ua ke ntawm kev ceev thiab kev ua kom zoo (ua kom zoo dua qhov ua kom tsis txawv thiab sib txuas), kev ua kom haum (xav txog ob peb yam xaus thiab kev ua kom sov), thiab kev tiv thaiv kho mob thiab kev ua kom yooj yim (tsis lom neeg, ua kom raug, thiab khawm emulsion). Cov lej yuav tsum tau pom nrog lub sijhawm.
Sponge
Polyvinyl alcohol, los ntawm nws cov groups uas xav dej thiab cov lus zoo cross-linking, tsim cov haujlwm zoo tshaj plaws ntawm sponge, yog li high-water absorption, biosafety thiab zoo rau lub ntiaj teb.
Pob
25 kg/hnab.
Khaws
Khaws rau hauv qhov chaw qhuav, zoo-ventilated ntawm chav tsev kub 5-30 ℃. Tsis txhob mus ze qhov chaw kub, tiv thaiv cov av noo, tsis txhob raug tshav ntuj. Nws yog txwv tsis pub khaws cia ua ke nrog cov tshuaj volatile los tiv thaiv adsorption deterioration.
