Padziko Lonse - PVA Yapamwamba: Polima Yapamwamba Kwambiri Yogwiritsira Ntchito Zosiyanasiyana
Minda Yaikulu Yogwiritsira Ntchito
PVA imagwiritsidwa ntchito kwambiri mumakampani opanga nsalu. Imagwira ntchito ngati chowonjezera kukula kwa ulusi, ndikuwonjezera mphamvu zawo komanso kusalala kwawo poluka. Izi zimathandiza kuchepetsa kusweka ndikuwonjezera ubwino wonse wa nsalu. Pambuyo poluka, PVA imatha kuchotsedwa mosavuta potsuka, ndikusiya nsaluyo ndi mawonekedwe ake oyamba. Kuphatikiza apo, PVA imagwiritsidwa ntchito popanga zokutira ndi zomatira za nsalu, zomwe zimapangitsa kuti zikhale zolimba komanso zolimba.
Mu makampani opanga mapepala, PVA imagwiritsidwa ntchito ngati choyezera kukula kwa pamwamba ndi chomangirira. Monga choyezera kukula kwa pamwamba, imathandizira kukana madzi, mphamvu, komanso kusindikizidwa kwa mapepala. Imapanga filimu yopyapyala, yowonekera bwino pamwamba pa pepala, kuletsa inki kufalikira ndikuwonjezera kumveka bwino kwa zithunzi zosindikizidwa. Monga chomangira, PVA imagwiritsidwa ntchito popanga mapepala okhala ndi zokutira ndi bolodi, kukulitsa kumamatira pakati pa wosanjikiza wokutira ndi substrate, ndikuwonjezera mphamvu yonse ndi kulimba kwa zinthu zamapepala.
PVA ndi chinthu chofunikira kwambiri mumakampani opanga zomatira. Ili ndi zinthu zabwino kwambiri zomatira, makamaka pazinthu zokhala ndi mabowo monga matabwa, mapepala, ndi nsalu. Zomatira zochokera ku PVA zimasungunuka m'madzi, zosavuta kugwiritsa ntchito, ndipo zimakhala ndi mphamvu zabwino zomatira. Zimagwiritsidwa ntchito kwambiri m'mafakitale omanga, mipando, ndi ma phukusi pomatira zinthu zosiyanasiyana. Kuphatikiza apo, zomatira za PVA zimatha kusinthidwa ndi zowonjezera zina kuti ziwongolere kukana kutentha, kukana madzi, ndi zina kuti zikwaniritse zofunikira zina.
Pankhani ya zokutira, PVA imagwiritsidwa ntchito ngati chopangira filimu. Imapanga filimu yowonekera, yosinthasintha, komanso yosalowa madzi pamwamba pa chinthu chokutidwa, zomwe zimateteza ku chinyezi, mankhwala, ndi kuwala kwa UV. Zophimba zochokera ku PVA zimagwiritsidwa ntchito kwambiri poteteza matabwa, zitsulo, ndi pulasitiki. Zingagwiritsidwenso ntchito ngati choyambira kapena chophimba chapakati kuti chikhale cholimba komanso chogwira ntchito bwino cha top-coat.
Mafotokozedwe
| Dzina la Chinthu | Mowa wa Polyvinyl | |||||||||
| Fomula Yamankhwala | (C2H4O)n | |||||||||
| Kulemera kwa Maselo | 30,000–150,000 g/mol | |||||||||
| Maonekedwe | Ufa woyera kapena granule | |||||||||
| Malo Osungunuka | 230–240°C | |||||||||
| Kuchulukana | 1.26–1.31 g/cm³ | |||||||||
| CAS NO | 9002-89-5 | |||||||||
| Khodi ya HS | 39053000 | |||||||||
| EINECS NO | 209-183-3 | |||||||||
| Kugwiritsa ntchito | Amagwiritsidwa ntchito mu zomatira, nsalu, zokutira mapepala, ndi mafilimu | |||||||||
Pepala Lowongolera Ubwino
| Dzina la Chinthu | Mowa wa Polyvinyl | ||||||
| CHINTHU | Mtengo Wamba (%) | MTENGO WA MAYESO (%) | |||||
| Mlingo wa Kumwa Mowa%(mol/mol) | 86.5～88.0 | 86 | |||||
| Kukhuthala kwa mPa·s | 45.0～55.0 | 48 | |||||
| Zinthu Zosasinthasintha | ≤5 | 3 | |||||
| Phulusa% | ≤0 | 0 | |||||
| pH mtengo | 5.0 | 5.0 | |||||
| Kukula kwa tinthu tating'onoting'ono toposa 10mesh | - | 2 | |||||
| Kukula kwa tinthu tating'onoting'ono kuposa 60mesh | - | 2 | |||||
Powombetsa mkota
PVA yathu ya Global - Premier imapezeka m'magiredi ndi mitundu yosiyanasiyana, kuphatikiza ufa, ma granules, ndi mayankho, kuti ikwaniritse zosowa za mafakitale osiyanasiyana. Gulu lililonse la PVA lili ndi zinthu zinazake monga kukhuthala, kuchuluka kwa polymerization, ndi digiri ya alcoholysis, zomwe zitha kusinthidwa malinga ndi zosowa za makasitomala. Zogulitsa zathu za PVA zimapakidwa mu chinyontho - chosagwira chinyezi komanso chopanda mpweya kuti zitsimikizire kuti zili bwino komanso zokhazikika panthawi yosungira ndi kunyamula. Kaya ndinu opanga nsalu ku Asia, fakitale ya mapepala ku Europe, wopanga zomatira ku North America, kapena kampani yopaka utoto ku South America, Global - Premier PVA yathu ndi polima yodalirika komanso yapamwamba yomwe ingakuthandizeni kukonza magwiridwe antchito ndi mtundu wa zinthu zanu.