Hydroxypropyl Methyl Cellulose cov khoom lag luam muaj kev noj ntau tshaj plaws hauv thaj tsam ntawm kev ncua polymerization ntawm vinyl chloride hauv Suav teb. Nyob rau hauv lub ncua kev kawm ntawv polymerization ntawm vinyl chloride, lub dispersed system muaj ib tug ncaj qha cuam tshuam rau cov khoom, PVC resin, thiab nyob rau hauv lub zoo ntawm nws ua thiab cov khoom. HydroxypropylMethylCellulose pab txhim kho thermal stability ntawm resin thiab tswj cov particle loj tis.PVC resin ua los ntawm cov khoom siv zoo HydroxypropylMethylCellulose tsis tsuas yog tuaj yeem ua kom cov kab kev ua tau zoo nrog cov qauv thoob ntiaj teb, tab sis kuj tuaj yeem muaj cov khoom zoo ntawm lub cev, cov khoom zoo heev thiab cov cwj pwm zoo rheological.
Hauv kev tsim cov khoom siv hluavtaws, xws li polyvinyl chloride, polyvinylidene chloride, thiab lwm yam copolymer, ncua kev kawm polymerization yog feem ntau siv thiab yuav tsum yog invariant hydrophobic monomers raug tshem tawm hauv dej. Raws li cov dej-soluble polymers, HydroxypropylMethylCellulose cov khoom lag luam muaj kev ua haujlwm zoo heev thiab ua haujlwm ua cov tshuaj tiv thaiv colloidal. Hydroxypropyl MethylCellulosecan zoo tiv thaiv cov khoom polymeric los ntawm kev tsim thiab agglomeration. Tsis tas li ntawd, txawm hais tias Hydroxypropyl MethylCelluloseis yog dej soluble polymer, nws tuaj yeem ua rau me ntsis soluble hauv hydrophobic monomers thiab tuaj yeem ua rau cov monomer porosity ntau dua rau cov khoom ntawm cov khoom polymeric.
Tsis tas li ntawd, cov kev tshawb fawb tau pom tias nyob rau hauv cov txheej txheem ntawm PVC, cov tuam txhab sib txawv siv cov txheej txheem sib txawv, yog li cov txheej txheem txheej txheej ntawm PVC tsim kuj txawv, thiab yog li HydroxypropylMethylCellulose tuaj yeem cuam tshuam rau kev ua haujlwm ntawm PVC resins. Nyob rau hauv cov txheej txheem dispersing tus neeg sawv cev, lub ncua kev kawm ntawv PVC resin npaj los ntawm cov sib xyaw dispersing tus neeg saib xyuas ntawm polyvinyl cawv (PVA) nrog txawv alcoholysis thiab polymerization degrees thiab hydroxypropyl methyl cellulose (HPMC) tej zaum yuav muaj kev sib txawv ntawm cov kev ua tau zoo. Kev ntsuam xyuas tau pom tias qhov sib xyaw ntawm HydroxypropylMethylCellulose thiab KP-08 / KZ-04 nrog rau qib alcoholysis ntawm 68% -75% yog qhov zoo dua thiab tseem muaj txiaj ntsig zoo rau porosity ntawm resin thiab nqus cov yas yas.
Post lub sij hawm: Apr-01-2022