Vinyl Acetate Monomer (Sinopec VAM)
Vinyl acetate kapena vinyl acetate monomer (VAM) amagwiritsidwa ntchito ngati monomer popanga mankhwala ena omwe amagwiritsidwa ntchito m'mafakitale osiyanasiyana ndi ogula.
Kodi Monomer ndi chiyani?
Monomer ndi molekyu yomwe imatha kulumikizidwa ku mamolekyu ena ofanana kuti apange polima.
Ma polima opangidwa ndi VAM, kuphatikiza vinyl chloride-vinyl acetate copolymer, polyvinyl acetate (PVA) ndi polyvinyl alcohol (PVOH), amagwiritsidwa ntchito mosiyanasiyana.
Ma polima akapangidwa pogwiritsa ntchito VAM, vinyl acetate yomwe imagwiritsidwa ntchito popanga imatheratu, zomwe zikutanthauza kuti pali zotsalira ngati pali mwayi wopezeka ku VAM yokha muzinthu izi.
● Zomatira ndi Zomatira: PVA ili ndi mphamvu zomatira pa zinthu zosiyanasiyana, kuphatikizapo mapepala, matabwa, mafilimu apulasitiki ndi zitsulo, ndipo ndi chinthu chofunika kwambiri pa guluu wamatabwa, guluu woyera, guluu wa kalipentala ndi guluu wa sukulu.PVOH imagwiritsidwa ntchito popanga mafilimu opangira zomatira;imasungunuka m'madzi ndipo imakhala yosinthika ikamakalamba.
● Utoto: Ma polima opangidwa ndi VAM amagwiritsidwa ntchito popanga utoto wambiri wa latex wamkati monga chophatikizira chomwe chimapereka kumamatira kwa zinthu zonse komanso kukongola kwa kumaliza.
● Zovala: PVOH imagwiritsidwa ntchito popanga nsalu kuti ikhale yozungulira, njira yomwe nsalu zimakutidwa ndi filimu yoteteza kuti zichepetse kusweka panthawi yoluka.
● Zopaka: PVOH imagwiritsidwa ntchito popanga zithunzi.Amagwiritsidwanso ntchito popanga polyvinyl butyral (PVB), utomoni womwe umakhala ndi zomatira zolimba, zomveka bwino komanso zolimba.PVB amagwiritsidwa ntchito makamaka mu galasi laminated kwa magalimoto ndi nyumba zamalonda;imapereka chotchinga choteteza komanso chowonekera chomwe chimalumikizidwa pakati pa magalasi awiri.Angagwiritsidwenso ntchito zokutira ndi inki.Zochokera ku VAM zimagwiritsidwanso ntchito ngati zokutira m'mafilimu apulasitiki kuti azipaka chakudya.
● Food Starch Modifier: VAM ikhoza kugwiritsidwa ntchito ngati chophatikizira pazakudya zowuma.Wowuma wosinthidwa nthawi zambiri amagwiritsidwa ntchito ngati chowonjezera chazakudya pazifukwa zomwezo zowuma wamba zomwe zimagwiritsidwa ntchito: kukhuthala, kukhazikika kapena kupangira zakudya monga soups, sauces ndi gravy.
● Thickeners: PVOH imagwiritsidwa ntchito ngati chokhuthala muzakumwa zina.Zinthu zonenepa zimatha kuwonjezeredwa ku zakumwa zina kuti zithandizire kuchiza dysphagia, kapena vuto lakumeza, ndikuthandizira zomwe zili muzakumwa zoziziritsa kukhosi kuti zikhalebe zogawanika.
● Kusungunula: VAM imagwiritsidwa ntchito popanga ethylene vinyl acetate (EVA), yomwe imagwiritsidwa ntchito popanga waya ndi chingwe chifukwa cha kusinthasintha kwake, kulimba komanso mphamvu zake zowotcha moto.
● Barrier Resin: Kuchulukirachulukira kugwiritsiridwa ntchito kwa VAM ndiko kupanga ethylene vinyl alcohol (EVOH), yomwe imagwiritsidwa ntchito ngati utomoni wotchinga m’zopaka chakudya, mabotolo apulasitiki, ndi matanki a petulo, ndi polima za engineering.Ma barrier resins ndi mapulasitiki omwe amagwiritsidwa ntchito popaka chakudya kuti asalowetse mpweya, nthunzi kapena madzi ndikuthandizira kuti chakudya chikhale chatsopano.
VAM gombe thanki yomwe ili pa Jiangyin, Nanjing ndi Jingjiang oposa 10000cbms.Relying amene, anakhazikitsa akasinja m'mphepete mwa nyanja ntchito kwambiri ndi anzawo mayiko ndi kupereka ntchito yabwino kwa makasitomala padziko lonse.
