HPMC, lub npe tag nrho yog Hydroxypropyl Methylcellulose, yog cov tshuaj lom neeg feem ntau siv hauv cov khoom siv hauv tsev, tshwj xeeb hauv kev tsim cov phab ntsa putty. HPMC yog nonionic cellulose ether nrog dej solubility zoo thiab muaj ntau yam haujlwm. Nws yog dav siv hauv kev tsim kho, tshuaj, khoom noj, tshuaj pleev ib ce thiab lwm yam.
1. Cov qauv tshuaj thiab cov khoom ntawm HPMC
HPMC yog tsim los ntawm kev hloov kho tshuaj ntawm natural cellulose. Nws cov qauv tshuaj tseem ceeb yog tias pawg hydroxyl ntawm cellulose tau hloov ib nrab los ntawm methyl thiab hydroxypropyl pawg. Cov qauv no muab HPMC tshwj xeeb lub cev thiab tshuaj muaj zog. Nws tuaj yeem yaj sai sai hauv dej los tsim cov pob tshab colloidal tov, thiab muaj ntau yam haujlwm xws li thickening, ncua kev kawm ntawv, adhesion, emulsification, zaj duab xis tsim thiab khaws cia noo noo.
2. Lub luag haujlwm ntawm HPMC hauv phab ntsa putty
Hauv cov qauv ntawm phab ntsa putty, HPMC feem ntau ua cov haujlwm hauv qab no:
Thickening nyhuv: HPMC tuaj yeem ua kom cov viscosity ntawm putty, ua rau nws tsis tshua muaj sag thaum lub sij hawm tsim kho, yog li xyuas kom meej tias cov putty txheej npog phab ntsa sib npaug thiab smoothly.
Kev tuav dej: HPMC muaj cov dej tuav ruaj khov, uas tuaj yeem tiv thaiv kom tsis txhob poob dej sai thaum lub sijhawm ziab ntawm putty. Qhov no feature ua kom lub cev curing thiab hardening ntawm putty thiab tiv thaiv teeb meem xws li ziab, tawg thiab hmoov.
Lubrication thiab kev tsim kho kev ua tau zoo: Qhov sib ntxiv ntawm HPMC tuaj yeem txhim kho lubricity ntawm putty, ua rau kev tsim kho smoother. Nws tseem tuaj yeem txuas ntxiv lub sijhawm qhib ntawm putty (uas yog, lub sij hawm lub putty nto tseem ntub), ua rau nws yooj yim rau cov neeg ua haujlwm tsim kho.
Adhesion thiab zaj duab xis tsim: HPMC muaj qee yam nplaum nplaum, uas tuaj yeem txhim kho qhov adhesion ntawm putty thiab phab ntsa thiab txo qhov kev pheej hmoo ntawm kev tawg thiab tawg. Tsis tas li ntawd, HPMC tseem tuaj yeem tsim cov yeeb yaj kiab tiv thaiv ntxiv los txhim kho lub zog thiab tawg tsis kam ntawm putty.
3. Yuav siv HPMC li cas thiab ceev faj
Hauv kev npaj cov txheej txheem ntawm putty, HPMC feem ntau yog tov nrog lwm cov khoom siv hmoov qhuav hauv cov hmoov hmoov, thiab tom qab ntawd yaj thiab ua haujlwm thaum lub sij hawm sib tov ntawm kev ntxiv dej. Nyob ntawm cov qauv putty, tus nqi ntawm HPMC ntxiv feem ntau yog nruab nrab ntawm 0.1% thiab 0.5%, tab sis cov nyiaj tshwj xeeb yuav tsum tau kho raws li qhov yuav tsum tau ua ntawm putty thiab kev tsim kho.
Koj yuav tsum tau xyuam xim rau cov ntsiab lus hauv qab no thaum siv HPMC:
Txoj kev sib cais: HPMC yog yooj yim soluble nyob rau hauv dej txias, yog li nws yog pom zoo kom muab nws nrog ib tug me me ntawm qhuav hmoov cov ntaub ntawv ua ntej, ces ntxiv rau hauv dej thiab do. Tsis txhob tso HPMC ncaj qha rau hauv cov dej ntau kom tiv thaiv kev sib tsoo.
Kev kub ntxhov: Lub solubility ntawm HPMC cuam tshuam los ntawm qhov kub thiab txias. Dissolution yog qeeb qeeb ntawm qhov kub thiab txias thiab lub sijhawm nplawm yuav tsum tau txuas ntxiv kom tsim nyog. Qhov kub thiab txias tuaj yeem ua rau qhov sib cais kom nrawm, yog li kev tsim kho yuav tsum tau kho kom haum.
Kev Tswj Xyuas Zoo: Qhov zoo ntawm HPMC ntawm kev ua lag luam tsis sib xws. Cov khoom uas txhim khu kev qha zoo yuav tsum raug xaiv thaum lub sij hawm tsim kho kom ntseeg tau tias kev ua haujlwm ruaj khov ntawm putty.
4. Lwm yam kev siv ntawm HPMC hauv kev tsim cov khoom siv
Ntxiv nrog rau nws daim ntawv thov dav hauv phab ntsa putty, HPMC muaj ntau lwm yam kev siv hauv kev tsim cov khoom siv. Nws yog siv nyob rau hauv ceramic pobzeb adhesives, gypsum khoom, self-leveling mortar thiab lwm yam ntaub ntawv kom thicken, khaws dej thiab txhim kho kev tsim kho kev ua tau zoo. Tsis tas li ntawd, HPMC kuj tau siv dav hauv cov txheej txheem, cov xim pleev xim, lub tsev mortars thiab lwm yam ntaub ntawv, dhau los ua cov tshuaj ntxiv uas tsis tseem ceeb hauv kev tsim kho.
5. Txoj kev txhim kho yav tom ntej
Nrog rau kev nce ntawm lub tsev ntsuab thiab kev tiv thaiv ib puag ncig, cov kev xav tau siab dua tau muab tso rau hauv kev tiv thaiv ib puag ncig ntawm cov tshuaj ntxiv hauv cov khoom siv hauv tsev. Raws li ib puag ncig tus phooj ywg ntxiv, HPMC yuav txuas ntxiv txhim kho yav tom ntej hauv kev taw qhia ntawm kev txhim kho kev ua tau zoo, txo cov nqi, thiab txo qhov cuam tshuam ib puag ncig. Tsis tas li ntawd, cov khoom lag luam HPMC customized rau cov xwm txheej sib txawv kuj yuav dhau los ua kev lag luam, ntxiv kev txhawb nqa kev tsim kho tshiab thiab kev tsim cov khoom siv hauv tsev.
Daim ntawv thov ntawm HPMC hauv phab ntsa putty thiab lwm yam khoom siv hauv tsev muab kev lees paub tseem ceeb rau kev txhim kho kev tsim kho kom zoo thiab ua haujlwm zoo. Nws qhov tseem ceeb hauv kev tsim kho yog qhov tseeb ntawm nws tus kheej.
Post lub sij hawm: Aug-16-2024