Xyoo tsis ntev los no, cov txheej txheej dej tau dhau los ua qhov kev tiv thaiv lawv cov kev tiv thaiv ib puag ncig, kev tsim txom tsawg, thiab kev tsim kho yooj yim. Txhawm rau txhim kho cov kev ua tau zoo thiab cov yam ntxwv ntawm cov txheej txheej no, ntau yam ntxiv yog siv, ib qho ntawm cov kev sib ntxiv tseem ceeb yog melloxypropylulose (HPMC). Cov cellulose no ether ua lub luag haujlwm tseem ceeb hauv kev txhim kho lub viscosity, ruaj khov, nplaum zoo ntawm cov dej txheej txheem
Kawm txog HPMC
Hydroxypropylencellulose, feem ntau hu ua HPMC, yog ib qho kev sib tw polymer tau los ntawm cellulose, lub ntuj muaj nyob hauv cov phab ntsa cell. Los ntawm kev hloov kho cov tshuaj lom neeg, cellulose hloov pauv mus rau hauv HPMC, sib sau cov dej-soluble polymer nrog ntau cov ntawv thov. HPMC yog tus cwj pwm los ntawm nws cov cim ua ke ntawm cov methrophobic methyl thiab hydrophilic hydrohology Hydroty cov khoom ntawm aqueous systems.
Kev ua tau zoo HPMC hauv cov txheej txheej dej
Viscosity tswj:
HPMC tau pom dav rau nws lub peev xwm los tswj cov viscosity ntawm dej-ua cov txheej txheem. Los kho cov concentration ntawm HPMC, cov tuam txhab tsim khoom tuaj yeem ua tiav cov txheej txheej uas xav tau lossis thinness, ua rau cov ntawv thov zoo dua thiab kev pov hwm.
Ruaj thiab sag tsis kam:
Qhov kev sib txuas ntawm HPMC txhim kho kom ruaj khov ntawm cov txheej txheem txheej txheej dej thiab txwv tsis pub sagging lossis dripping thaum kev tsim kho. Qhov no yog qhov tshwj xeeb tshaj yog ib qho tseem ceeb ntawm qhov chaw ntsug qhov chaw uas tswj tau ib qho tseem tshuav yog qhov nyuaj.
Txhim Kho Adhesion:
HPMC pab txhim kho cov txheej nplaum rau ntau yam ntawm substrates rau kev ntev-ntev, ruaj khov. Qhov no yog qhov tshwj xeeb tshaj yog qhov tseem ceeb rau cov xim tha xim sab nrauv uas tau nthuav tawm cov huab cua sib txawv.
Dej khaws cia:
HPMC paub txog nws cov dej-khaws cov khoom, uas tau txais txiaj ntsig hauv kev tiv thaiv ntxov ntxov ntawm daim xim ua daim ntawv thov. Qhov no ua kom muaj ntau yam thiab ua tiav.
Thixotropy:
Lub thixotropic xwm ntawm HPMC tso cai rau cov xim yuav tsum tau thov yooj yim nrog kev siv zog tsawg thaum tswj ruaj khov thaum tsis nyob hauv cov lus tsa suab. Cov yam ntxwv no tshwj xeeb tshaj yog muaj txiaj ntsig zoo rau kev txo cov pheeb thaum siv thaum daim ntawv thov.
Daim ntawv thov HPMC hauv cov dej pleev dej
Sab hauv thiab sab nrauv cov txheej txheem:
HPMC tau siv dav hauv sab hauv tsev thiab sab nraum zoov-ua cov txheej txheem los txhim kho lawv cov kev ua tau zoo tag nrho. Nws pab ua kom tiav txoj kev du, txawm tias ua tiav thaum muab kev tiv thaiv ib puag ncig ib puag ncig.
Kev ntxhib los mos xim:
Cov ntaub thaiv npog cov ntaub ntawv, feem ntau siv rau cov laj thawj zoo nkauj, muaj txiaj ntsig los ntawm RHEology tswj tau muab los ntawm HPMC. Nws pab tswj cov kev xav xav tau thiab cov tsos ntawm cov txheej.
Primer thiab Foob:
Hauv cov ntawv tso cai thiab cov xov xwm, qhov twg adhesion thiab substrate kev pab them yog qhov tseem ceeb, HPMC pab txhim kho Adhesion thiab zaj duab xis tsim, ua rau muaj kev ua tau zoo dua.
Masonry thiab Stucco Tsho:
HPMC tuaj yeem siv rau Masonry thiab Stucco Txheej, muab qhov tsim nyog viscosity thiab los tiv thaiv cov txheej txheem tshwj xeeb.
Ntoo Txheej:
Cov teeb meem ntoo ntoo los ntawm HPMC muaj peev xwm txhim kho adhesion thiab tiv thaiv cov khoom zoo nkauj, kom muaj kev sib xws thiab ruaj khov ntawm cov npoo ntoo.
Cov txiaj ntsig ntawm kev siv HPMC hauv cov txheej txheej dej
Tus phooj ywg ib puag ncig:
HPMC yog muab tau los ntawm cov peev txheej txuas tau yooj yim dua tshiab thiab pab txhawb rau cov kev ua phooj ua phooj ywg ib puag ncig ntawm cov dej txheej txheem dej. Nws biodegradity nce cov kev ruaj khov ntawm cov txheej txheem ua qauv.
Txhim Kho Tshuab Luam Ntawv:
Kev tswj hwm RHH tau muab los ntawm HPMC ua cov txheej txheej dej yooj yim siv, txawm tias cov txhuam hniav lossis tshuaj tsuag lossis tshuaj tsuag zoo dua thiab thov.
Txhim Kho Durability:
HPMC txhim kho Adhesion thiab ruaj khov, pab kom nce qhov durability thiab ntev ntawm cov xim av ua tiav, txo qhov kev xav tau ntawm cov app feem ntau.
Versatility:
HPMC yog ib qho ntxiv ntxiv uas tuaj yeem siv tau ntau yam ntawm cov dej ua qauv kom haum raws li ntau txoj hauv kev.
Tus nqi siab:
HPMC lub zog ua kom huv thiab ruaj khov pab txo cov pig thiab lwm yam kim ntxiv, ua rau cov nqi nyiaj ntxiv, ua rau cov nqi nyiaj ntxiv, ua rau cov nqi txuag tau nyiaj.
Hauv kev xaus
HydroxyPropylropenCellulose (HPMC) yog qhov muaj txiaj ntsig zoo ntxiv hauv cov txheej txheem dej. Nws cov khoom ntiag tug, suav nrog viscosity tswj, txhim kho cov khoom sib xws, txhim kho cov khoom xyaw uas tsis muaj peev xwm rau cov khoom lag luam zoo, ib puag ncig cov khoom lag luam. Raws li qhov kev thov rau kev ruaj ntseg thiab cov neeg siv-cov neeg siv khoom lag luam txuas ntxiv nrog cov khoom siv ntawm cov dej ntawm cov dej ntawm cov dej uas tau ua tiav thiab ib puag ncig.
Lub Sijhawm Post: Kaum-18-2023