Kev siv ntawm Polyvinyl ethers (Lutonal)
Aug 26, 2022
Taw qhia
Lutonal series yog saponification-resistant soft resins rau nce qhov adhesion thiab yooj ntawm luam ntawv inks thiab cellulose nitrate thiab resin coatings.
Daim ntawv thov
Lutonal A 25 thiab A 50Qhov sib txawv tsuas yog nyob rau hauv lawv cov degree ntawm polymerization, thiab yog li nyob rau hauv lawv viscosity. Lawv lub ntsiab siv yog li plasticizing mos resins rau cellulose nitrate txheej. Lawv cov cwj pwm mos mos kuj txhim kho qhov adhesion ntawm cov coatings.
Hauv kev tsim cov xim uas muaj Lutonal A tsawg dua li cellulose nitrate, nws yog ib qho tsim nyog yuav tau ntxiv ib tus neeg sawv cev tiag tiag rau cellulose nitrate, xws li phthalate.
Cov qauv uas muaj Lutonal A ntau dua li cellulose nitrate, ntawm qhov tod tes, tsis tas yuav muaj cov yas ntxiv. Cov kuab tshuaj sib xyaw uas siv rau hauv cov xim yuav tsum muaj 25 - 40 feem pua ethanol, thaum qhov feem pua ntawm cov kuab tshuaj tsis muaj zog yuav tsum tau khaws cia kom tsawg li sai tau, txwv tsis pub cov khaubncaws sab nraud povtseg ntawm cov xim qhuav dhau qeeb thiab nyob twj ywm tacky.
Lutonal A kuj tseem siv los tsim cov xim pleev xim raws li ntuj thiab hluavtaws (cov pos hniav dammar, ester resins, txiv qaub resin, txiv neej resin, ketone resin lossis phenol-muaj rosin).
Cov qib Lutonal A tuaj yeem muab ntxiv rau cov ntawv luam ntawv rau ntim los txhim kho lawv cov adhesion rau txhuas ntawv ci thiab cellophane hauv flexographic thiab intaglio luam ntawv.
Lub viscosity ntawm cov kev daws teeb meem ntawm Lutonal A qib nyob ntawm lawv cov ntsiab lus ntawm cov khib nyiab thiab cov kuab tshuaj. Rau tib qhov concentration, viscosity tau nrog ntau hom hnyav nce hauv qhov kev txiav txim hauv qab no: esters, aromatic solvents, alcohols, chlorinated hydrocarbons. Lutonal A 25, uas tsis muaj cov kuab tshuaj, tuaj yeem yaj hauv lub sijhawm tsim nyog hauv lub tshuab pug.
