PVC Giredi HPMC

PVCHPMC Hydroxypropyl Methylcellulose ya kalasi ndi mtundu wa polima womwe umagwiritsidwa ntchito kwambiri komanso umagwira ntchito bwino kwambiri pakati pa mitundu yonse ya cellulose. Umagwiritsidwa ntchito kwambiri m'magawo osiyanasiyana amafakitale komanso m'moyo watsiku ndi tsiku. Nthawi zonse umadziwika kuti "mafakitale MSG".

Hydroxypropyl methyl cellulose (HPMC) ndi imodzi mwa zinthu zazikulu zomwe zimafalitsa zinthu mu makampani opanga polyvinyl chloride (PVC). Panthawi yopopera vinyl chloride, imatha kuchepetsa kupsinjika kwa pakati pa VCM ndi madzi ndikuthandizira kuti vinyl chloride monomers (VCM) ifalitsidwe mofanana komanso mokhazikika mu aqueous medium; imaletsa madontho a VCM kuti asaphatikizidwe kumayambiriro kwa njira yopopera; imaletsa tinthu ta polymer kuti tisaphatikizidwe kumapeto kwa njira yopopera. Mu njira yopopera vinyl, imagwira ntchito yofalitsa ndi kuteteza. Udindo wachiwiri wa kukhazikika.

Mu VCM suspension polymerization, madontho oyambirira a polymerization ndi tinthu tapakati ndi ta kumapeto kwa polymer zimakhala zosavuta kugwirizana poyamba, kotero chotetezera kufalikira chiyenera kuwonjezeredwa ku VCM suspension polymerization system. Pankhani ya njira yosakanizira yokhazikika, mtundu, mtundu ndi kuchuluka kwa dispersant zakhala zinthu zofunika kwambiri polamulira makhalidwe a tinthu ta PVC.

Kufotokozera kwa Mankhwala

Kalasi ya Zamalonda:

Makhalidwe

(1)Kutentha kwa polymerization: Kutentha kwa polymerization kumatsimikiza kulemera kwapakati kwa mamolekyulu a PVC, ndipo dispersant kwenikweni siikhudza kulemera kwa mamolekyulu. Kutentha kwa gel kwa dispersant kumakhala kokwera kuposa kutentha kwa polymerization kuti zitsimikizire kuti polima ikufalikira ndi dispersant.

(2) Makhalidwe a tinthu: kukula kwa tinthu tating'onoting'ono, mawonekedwe ake, kufalikira kwa tinthu tating'onoting'ono, ndi kufalikira kwa tinthu tating'onoting'ono ndi zizindikiro zofunika kwambiri za mtundu wa SPVC, zomwe zimagwirizana ndi kapangidwe ka agitator/reactor, polymerization water-to-oil ratio, dispersion system ndi final conversion rate ya VCM, yomwe dispersion system ndi yofunika kwambiri.

(3) Kusakaniza: Monga momwe zimakhalira ndi njira yofalitsira madzi, zimakhudza kwambiri ubwino wa SPVC. Chifukwa cha kukula kwa madontho a VCM m'madzi, liwiro la kusakaniza limawonjezeka ndipo kukula kwa madontho kumachepa; liwiro la kusakaniza likakwera kwambiri, madonthowo amasonkhana pamodzi ndikukhudza tinthu tomaliza.

(4) Dongosolo loteteza kufalikira: Dongosolo loteteza limateteza madontho a VCM kumayambiriro kwa zomwe zimachitika kuti zisaphatikizidwe; PVC yopangidwa imagwera m'madontho a VCM, ndipo dongosolo lofalitsa limateteza kusonkhana kwa tinthu tolamulidwa, kuti tipeze tinthu tomaliza ta SPVC. Dongosolo lofalitsa limagawidwa m'magawo awiri: dongosolo lalikulu lofalitsa ndi dongosolo lothandizira kufalikira. Dispersant yayikulu ili ndi PVA, HPMC, ndi zina zotero, zomwe zimakhudza magwiridwe antchito onse a SPVC; dongosolo lothandizira kufalitsa limagwiritsidwa ntchito kukonza mawonekedwe ena a tinthu ta SPVC.

(5) Dongosolo lalikulu logawanitsa: Ndi losungunuka m'madzi ndipo limakhazikitsa madontho a VCM pochepetsa kupsinjika pakati pa VCM ndi madzi. Pakadali pano mumakampani a SPVC, zogawanitsa zazikulu ndi PVA ndi HPMC. HPMC ya PVC ili ndi ubwino wa mlingo wochepa, kukhazikika kwa kutentha komanso magwiridwe antchito abwino a SPVC. Ngakhale ndi yokwera mtengo, imagwiritsidwabe ntchito kwambiri. HPMC ya PVC ya mtundu ndi chinthu chofunikira choteteza kugawanitsa mu kapangidwe ka PVC..

Kulongedza

TKulongedza kokhazikika ndi 25kg/ng'oma 

20'FCL: matani 9 okhala ndi mapaleti; matani 10 osapakidwa mapaleti.

40'FCL:18tani yokhala ndi pallet;20tani yosaphwanyidwa.

Malo Osungira:

Sungani pamalo ozizira, ouma osapitirira 30°C ndipo mutetezedwe ku chinyezi ndi kukanikiza, popeza katunduyo ndi thermoplastic, nthawi yosungira siyenera kupitirira miyezi 36.

Zolemba zachitetezo:

Deta yomwe ili pamwambapa ikugwirizana ndi zomwe tikudziwa, koma musalole makasitomala kuti aziyang'ana zonse mosamala nthawi yomweyo akalandira. Kuti mupewe mitundu yosiyanasiyana ya mankhwala ndi zinthu zosiyanasiyana zopangira, chonde yesani zambiri musanagwiritse ntchito.