Cov khoom Hydroxypropyl Methyl Cellulose muaj kev siv ntau tshaj plaws hauv thaj chaw ntawm kev ncua polymerization ntawm vinyl chloride hauv Suav teb. Hauv kev ncua polymerization ntawm vinyl chloride, lub kaw lus dispersed muaj kev cuam tshuam ncaj qha rau cov khoom, PVC resin, thiab ntawm qhov zoo ntawm nws cov txheej txheem thiab cov khoom. HydroxypropylMethylCellulose pab txhim kho qhov thermal stability ntawm resin thiab tswj cov khoom me me faib..PVC resin ua los ntawm cov khoom zoo HydroxypropylMethylCellulose tsis yog tsuas yog ua kom ntseeg tau tias cov kab kev ua tau zoo nrog cov qauv thoob ntiaj teb, tab sis kuj tuaj yeem muaj cov khoom zoo pom tseeb, cov khoom zoo heev thiab cov cwj pwm rheological zoo heev.
Hauv kev tsim cov khoom siv hluavtaws, xws li polyvinyl chloride, polyvinylidene chloride, thiab lwm yam copolymers, kev ncua polymerization yog qhov siv ntau tshaj plaws thiab yuav tsum yog cov monomers hydrophobic uas tsis hloov pauv uas dai rau hauv dej. Ua cov polymers uas yaj hauv dej, HydroxypropylMethylCellulose khoom muaj kev ua haujlwm zoo heev thiab ua haujlwm ua cov neeg sawv cev tiv thaiv colloidal. HydroxypropylMethylCellulose tuaj yeem tiv thaiv cov khoom polymeric los ntawm kev tsim thiab agglomeration. Ntxiv mus, txawm hais tias HydroxypropylMethylCellulose yog cov polymer uas yaj hauv dej, nws tuaj yeem yaj me ntsis hauv cov monomers hydrophobic thiab tuaj yeem ua rau cov monomer porosity rau kev tsim cov khoom polymeric.
Ntxiv rau, kev tshawb fawb tau qhia tias nyob rau hauv cov txheej txheem tsim khoom ntawm PVC, cov tuam txhab sib txawv siv cov txheej txheem sib txawv, yog li cov khoom txheej sab nraud ntawm PVC tsim tawm kuj sib txawv, thiab yog li HydroxypropylMethylCellulose tuaj yeem cuam tshuam rau kev ua haujlwm ntawm PVC resins. Hauv cov txheej txheem sib xyaw dispersing, cov tshuaj PVC resin uas tau npaj los ntawm cov neeg sawv cev sib xyaw dispersing ntawm polyvinyl cawv (PVA) nrog cov qib alcoholysis thiab polymerization sib txawv thiab hydroxypropyl methyl cellulose (HPMC) yuav muaj cov teebmeem sib txawv rau kev ua haujlwm. Kev sim tau qhia tias cov tshuaj sib xyaw ntawm HydroxypropylMethylCellulose thiab KP-08 / KZ-04 nrog qib alcoholysis ntawm 68% -75% zoo dua thiab kuj zoo dua rau porosity ntawm resin thiab kev nqus ntawm plasticizers.
Lub sijhawm tshaj tawm: Plaub Hlis-01-2022