Hydroxypropyl Methylcellulose monga olekanitsa wothandizila, mankhwala analandira ndi particles lokonzedwa ndi lotayirira, oyenera kachulukidwe zikuoneka ndi ntchito kwambiri processing.Komabe, kugwiritsa ntchito Hydroxypropyl Methylcellulose kokha kungathandizire kusinthika kwabwino kwa utomoni.Ntchito yonse ya utomoni ndiyosauka.Kugwiritsiridwa ntchito kwa hydroxypropyl methylcellulose ndi madigiri angapo a alcoholysis a polyvinyl mowa kungapangitse kuti zinthuzo zikhale bwino, khalidwe losavuta kulamulira komanso nthawi yomweyo likhoza kuchepetsa mtengo.Wobalalitsa ndiye chinthu chachikulu chomwe chimakhudza mawonekedwe a tinthu ta polyvinyl chloride resin.Zing'onozing'ono pamwamba mavuto a amadzimadzi njira ya ambiri dispersing wothandizila ndi interfacial mikangano ndi Vinyl kolorayidi monoma ndi, bwino ndi VCM m'malovu akhoza kumwazikana.Ndipo motero tinthu awiri a PVC utomoni adzakhala ang'onoang'ono.Kulimba kwa chitetezo cha wothandizira wobalalitsa ndi, kuyandikira kwa PVC resin particles kudzakhala kocheperako ndipo porosity idzakhala yochepa.Ndipo intergranular coalescence ndizovuta kwambiri, choncho n'zosavuta kupanga resins.
Mwachitsanzo, mu PVA ndi HPC dispersion system, kuchuluka kwa alcoholysis kwa PVA kumakhala kokulirapo, m'pamenenso kugwedezeka kwamadzi kwamadzimadzi kumakhala kokulirapo komanso chitetezo champhamvu chidzakhala, pomwe kuchuluka kwa hydroxypropyl methylcellulose kumakhalapo. zotsatira zabwino zobalalitsa.Chifukwa chake, kugwiritsa ntchito PVA yokhala ndi digiri yapamwamba ya alcoholysis ngati choyambirira
obalalitsa, ndi kuphatikiza a
kuchuluka kwa hydroxypropyl methylcellulose
monga wothandizila dispersing kwa kuyimitsidwa polymerization, n'zosavuta kukonzekera PVC utomoni kuti akhoza kukwaniritsa zofunikira za particle morphology.Mwachitsanzo, mu PVA ndi HPC dispersion system, kuchuluka kwa alcoholysis kwa PVA kumakhala kokulirapo, m'pamenenso kugwedezeka kwamadzi kwamadzimadzi kumakhala kokulirapo komanso chitetezo champhamvu chidzakhala, pomwe kuchuluka kwa hydroxypropyl methylcellulose kumakhalapo. zotsatira zabwino zobalalitsa.
Nthawi yotumiza: Mar-17-2022