Iimveliso zeHydroxypropyl Methyl Cellulose zisetyenziswa kakhulu kwindawo yokumisa i-vinyl chloride eTshayina. Kwi-suspension polymerization ye-vinyl chloride, inkqubo esasazekileyo inempembelelo ngqo kwimveliso, i-PVC resin, kunye nomgangatho wokucubungula kwayo kunye neemveliso. IHydroxypropylMethylCellulose inceda ukuphucula uzinzo lobushushu be-resin kunye nokulawula ukusasazwa kobungakanani bezinto ezincinci..I-resin ye-PVC eyenziwe nge-HydroxypropylMethylCellulose esemgangathweni ophezulu ayiqinisekisi nje kuphela ukusebenza ngokuhambelana nemigangatho yamazwe ngamazwe, kodwa inokuba neepropati ezibonakalayo ezintle, iipropati zeesuntswana ezibalaseleyo kunye nokuziphatha okuhle kakhulu kokunyibilika kwe-rheological.
Kwimveliso yeeresini zokwenziwa, ezifana ne-polyvinyl chloride, i-polyvinylidene chloride, kunye nezinye ii-copolymers, i-suspension polymerization yeyona isetyenziswa kakhulu kwaye kufuneka ibe zii-monomers ezihlala zihleli ezimanzini. Njengee-polymers ezinyibilikayo emanzini, imveliso ye-HydroxypropylMethylCellulose inomsebenzi ogqwesileyo womphezulu kwaye isebenza njengee-agents ezikhuselayo ze-colloidal. I-HydroxypropylMethylCellulose inokuthintela ngokufanelekileyo amasuntswana e-polymeric ekubeni avelise kwaye ahlangane. Ngaphezu koko, nangona i-HydroxypropylMethylCellulose iyi-polymer enyibilikayo emanzini, inokunyibilika kancinci kwii-monomers ezimanzi kwaye inokunyusa i-monomer porosity yokuvelisa amasuntswana e-polymeric.
Ukongeza, izifundo zibonise ukuba kwinkqubo yokuvelisa i-PVC, amashishini ahlukeneyo asebenzisa inkqubo eyahlukileyo esasazekileyo, ngoko ke iipropati zokugquma zangaphandle ze-PVC eziveliswayo nazo zahlukile, kwaye ke ngoko i-HydroxypropylMethylCellulose inokuchaphazela ukusebenza kokucubungula kwee-resin ze-PVC. Kwinkqubo ye-composite dispersing agent, i-suspension PVC resin elungiselelwe kwi-composite dispersing agent ye-polyvinyl alcohol (PVA) ene-alcoholization kunye ne-polymerization degrees ezahlukeneyo kunye ne-hydroxypropyl methyl cellulose (HPMC) inokuba nemiphumo eyahlukileyo ekusebenzeni kokucubungula. Uvavanyo lubonise ukuba i-compound ye-HydroxypropylMethylCellulose kunye ne-KP-08/KZ-04 ene-alcohollysis degree ye-68% -75% ingcono kwaye ikwaluncedo kwi-porosity ye-resin kunye nokufunxwa kwe-plasticizers.
Ixesha lokuthumela: Epreli-01-2022