Nyob rau tib lub sijhawm, nws tuaj yeem txhim kho lub zog compressive thiab shear zog ntawmHPMC hydroxypropyl methyl cellulose, ntxiv txhim kho cov txiaj ntsig tiag tiag ntawm kev tsim kho engineering, txhim kho kev ua haujlwm zoo. HPMC hydroxypropyl methyl cellulose tuaj yeem txhim kho lub zog nplaum ntawm cov hmoov putty, txo qhov kev raug ncua, los xyuas kom meej qhov kev tsim kho engineering. Hydroxypropyl methyl cellulose tuaj yeem ua rau lub sijhawm ua haujlwm ntau ntxiv thiab daws qhov teeb meem ntawm qhov hollow thiab tsis txaus lub zog tseem ceeb hauv cov txheej txheem kev tsim kho engineering.
Kev ua haujlwm siab dej-xauv ntawm engineering siv mortar thiab putty mortar tuaj yeem ua cov pob zeb sib xyaw kom txaus, thiab tuaj yeem ua kom pom tseeb ntawm kev sib koom ua ke compressive zog ntawm mortar. Nyob rau tib lub sijhawm, lub zog compressive thiab shear lub zog ntawm hydroxypropyl methyl cellulose tuaj yeem txhim kho tsim nyog los txhim kho qhov tseeb ntawm kev tsim kho engineering thiab txhim kho kev ua haujlwm.
Moisture resistance tus tub,HPMChydroxypropyl methyl cellulose, cov nyhuv ntawm hydroxypropyl methyl cellulose nyob rau hauv cov hmoov putty, los tiv thaiv kom qhuav thiab qhuav los ntawm cov dej tawm sai heev. Hydroxypropyl methyl cellulose tuaj yeem txhim kho lub zog nplaum ntawm cov hmoov putty, txo qhov kev ncua, xyuas kom muaj kev vam meej ntawm kev tsim kho engineering.
HPMC hydroxypropyl methyl cellulose tseem ceeb nrog cov dej xauv, thickening, ntub dej thiab lwm yam teebmeem, thickening, ntub dej thiab lwm yam teebmeem muaj qee qhov kev teeb tsa thawj zaug. Hydroxypropyl methyl cellulose tuaj yeem ua rau lub sijhawm ua haujlwm ntau ntxiv thiab daws qhov teeb meem ntawm qhov hollow thiab tsis txaus lub zog tseem ceeb hauv cov txheej txheem kev tsim kho engineering.
HPMC hydroxypropyl methyl cellulose nyob rau hauv phab ntsa rwb thaiv tsev mortar plays lub luag hauj lwm tseem ceeb nyob rau hauv kev sib raug zoo nyhuv, thiab txhim khu lub compressive zog ntawm raw cov ntaub ntawv. Mortar yog yooj yim heev los npog, txhim kho kev ua haujlwm zoo, nrog rau kev ua haujlwm yooj yim ntawm kev tshem tawm cov dej ntws tawm thiab cov txiaj ntsig siv tau. Kev ua haujlwm ntawm cov dej-locking ntawm hydroxypropyl methyl cellulose tuaj yeem ua rau lub sijhawm ua haujlwm ntawm mortar, txhim kho kev sib koom ua ke thiab kev sib txuas, txhim kho qhov zoo, thiab txhim kho lub zog ntawm kev sib txuas.
Cov pobzeb uas muaj dej-soluble binder tshem tawm qhov xav tau rau cov pobzeb ua ntej lossis ntub dej hauv pem teb thiab cov hauv paus, ntxiv kev txhim kho lub zog sib txuas. Lub slurry engineering siv lub sij hawm ntev, meticulous, symmetrical, yooj yim engineering siv, nrog zoo ya raws.
Nyob rau hauv lub tshav pob ntawm ntuj latex tsev coatings, hydroxypropyl methyl cellulose yuav siv tau raws li zaj duab xis tsim tus neeg sawv cev, tackifier, demulsifier thiab thickener, kom cov yas zaj duab xis muaj zoo hnav tsis kam, fluidity thiab adhesion. Cov pH siv los txhim kho kev sib txhuam ntawm lub ntsej muag yog txhais tau zoo, thiab qhov sib xyaw nrog cov tshuaj organic yog qhov zoo thiab muaj qhov smoothness.
Kev txhim kho kev lag luam Architectural coatings muaj lub zog zoo, zoo heev dej permeability thiab zoo aging kuj. Lub pob zeb tiag tiag txheej qauv tsim qauv yog qhov tseem ceeb heev. Ib tuj ntawm cov lacquer zoo yog tsim los ntawm 300KG ntshiab styrene-acrylic emulsion, 650KG ntshiab ntuj pob zeb aqueous tov thiab lwm yam khoom. Cov lacquers zoo tiag tiag yog tus cwj pwm los ntawm ntau cov tshuaj pleev xim moisturizing. Thaum cov kua muaj pes tsawg leeg ntawm emulsion yog 50%, qhov ntim ntawm 300KG moisturizing emulsion tom qab ziab yog li 150 litres, thiab qhov ntim ntawm 650KG hnyav xuab zeb yog li 228 litres. Uas yog hais, nyob rau hauv cov ntaub ntawv no, cov xim pob zeb tiag tiag (xim paste concentration tus nqi) yog 60%. Vim tias qhov loj me me thiab qhov tsis sib xws ntawm cov xuab zeb zoo, nyob rau hauv qhov chaw ntawm ib qho kev soj ntsuam me me, cov txheej txheej sab nrauv qhuav yuav nyob ib ncig ntawm CPVC concentration tus nqi).
Rau viscosifier, yog tias tsim nyog xaiv cellulose viscosity, txheej txheej phab ntsa sab nrauv tuaj yeem tsim cov ncauj lus kom ntxaws, ntau cov xim xim txheej, thiaj li ua tiav peb cov kev cai ntawm sab nrauv phab ntsa. Peb txoj cai rau lub tsev txheej. Qhov tseeb, daim ntawv thov ntau ntawm kev lag luam thiab cov tswv yim pob zeb qi, ib tuj ntawm daim ntawv qhia zais cia hnyav 100-160kg, 750kg xim phaj xuab zeb, 20kg (xws li txheej txheej additives, tshuaj tua kab, fungicides, adhesives, thiab lwm yam), tus so ntawm lub dej thiab khoom tu tawv nqaij. Qhov no tiag tiag pob zeb xim PVC feem ntau nyob rau hauv nruab nrab ntawm 75%? Nyob nruab nrab ntawm 85%, nyob rau hauv cov txheej txheem kev lag luam yog qhuav, tiag tiag pob zeb xim txheej yog ib qho nyuaj rau tsim kom muaj cov ncauj lus kom ntxaws thiab nruj xim txheej. Yog li ntawd, yuav ua li cas siv tag nrho cov kev txwv moisturizing emulsion zais cia daim ntawv qhia cov nyhuv, kom lub txheej kom deb li deb tau symmetrical.
Lub tsev pob zeb tiag tiag muaj cov yam ntxwv ntawm cov viscosity tsawg (siab molecular hnyav). Vim tias qhov nce ntawm tus nqi ntawm cov khoom lag luam cellulose, viscosity ntawm daim ntawv thov cellulose hloov los ntawm 30000 mus rau 50000,80000,100000, txawm tias nws nce 200000, lub hom phiaj yog kom txo tag nrho cov cellulose los ntawm methyl cellulose (HEC. ) rau hydroxyl acrylic cellulose (HPMC); Daim ntawv thov ntawm methyl methyl cellulose HPMC yuav txo tau cov dej repellency ntawm lub tsev pob zeb tiag tiag xim, thiab tom qab ntawd txhim kho cov viscosity ntawm cellulose (cov txheeb ze molecular loj) yuav yog lub tsev pob zeb tiag tiag cov xim tsev cov khoom ua tau zoo? Cov lus teb yog tias qhov kev ua tau zoo ntawm cov xim pleev xim rau pob zeb yuav ua rau tsis zoo thiab tsis zoo!
HPMC tuaj yeem muab faib ua hom instant thiab kub soluble. Thaum cov dej txias sai sai disperses thiab txo qis hauv dej, HPMC tuaj yeem muab faib ua hom tam sim thiab kub soluble. Lub sijhawm no, cov kua dej tsis muaj viscosity, vim tias HPMC tsuas yog tawg mus rau hauv dej, thiab tsis muaj kev nkag siab tiag tiag ntawm melting. Tom qab li 2 feeb, lub viscosity ntawm cov kua expands maj mam, ua ib pob tshab viscous colloid tov. Thaum cov khoom lag luam kub organic hnyav sib sau ua ke hauv dej txias, lawv tuaj yeem tawg sai sai hauv dej kub thiab dissipate hauv dej kub. Thaum lub ambient kub txo mus rau ib tug tej degree ntawm tshav kub, lub viscosity yuav maj mam tshwm sim kom txog rau thaum ib tug tag nrho pob tshab viscous colloidal tov yog tsim. Hom thermal organic hnyav tsuas yog siv rau sab hauv phab ntsa putty hmoov thiab mortar. Hauv cov kua dej superglue thiab txheej txheej, muaj cov pej xeem uas tsis tuaj yeem siv tau. Qhov ceev - solubility hom muaj cov ntawv thov dav dav. Yuav siv tau raws li sab hauv phab ntsa putty hmoov thiab mortar, thiab nws cov kua superglue thiab txheej. Tsis muaj taboo.
Cov dej kub yaj: vim tias HPMC hauv cov dej kub tsis yaj, yog li HPMC nyob rau hauv thawj qhov txuas tuaj yeem sib npaug sib npaug hauv cov dej kub, thiab tom qab ntawd sai yaj thaum txias. Ob txoj kev classical tau piav raws li hauv qab no:
1) Muab cov dej kub uas koj xav tau rau hauv lub nkoj thiab cua sov rau li 70 ℃. Maj mam sib tov, maj mam ntxiv hydroxypropyl methyl cellulose, maj mam HPMC ntab rau ntawm tus dej, ces maj mam tsim sludge tub yees sludge hauv kev sib tov.
2) Ntxiv 1/3 lossis 2/3 ntawm cov dej rau hauv lub nkoj, ua kom sov rau 70 ℃, cua sov rau 70 ℃ kom tawg HPMC, thiab npaj cov dej kub sludge; Tom qab ntawd cov dej txias ntxiv yog ntxiv rau cov sludge kub thiab sib tov nrog cov sib tov tom qab txias.
Txoj kev sib xyaw hmoov: HPMC hmoov nrog lub tshuab ntxhua khaub ncaws thiab ntau lwm cov hmoov sib tov sib xyaw kom txaus, ces ntxiv dej kom yaj. Lub sijhawm no, HPMC tuaj yeem yaj nyob rau hauv cov ntaub ntawv tsis muaj agglomeration, vim hais tias txhua lub ces kaum me me tsuas yog me ntsis HPMC hmoov, thaum cov dej yuav yaj tam sim ntawd - txoj kev no tsuas yog siv cov khoom siv hauv phab ntsa putty hmoov thiab mortar manufacturers. [HPMC] ua tus tackifying tus neeg saib xyuas thiab moisturizing tus neeg sawv cev nyob rau hauv lub putty mortar ntawm lub puab phab ntsa.
Qhov no yog ib tug raug hydroxypropyl methyl cellulose (HMPC) tsim kua muag, uas yog ze rau cov viscoelastic tshuaj (feem ntau mucin) hauv kua muag. Nws adheres rau saum npoo ntawm lub qhov muag los ntawm lub adsorption ntawm polymer, thiab simulates lub luag hauj lwm ntawm conjunctival mucin, thiaj li mus txhim kho lub txo lub xeev ntawm mucin nyob rau hauv lub qhov muag thiab ua rau kom lub wetting nyhuv ntawm lub cornea.
Hauv cov hmoov putty, thickening, dej tuav thiab kev tsim kho ntawm peb txoj haujlwm. Thickening, cellulose tuaj yeem ua kom tuab rau kev ncua, yog li cov kev daws teeb meem tseem tsis sib xws nce thiab nqis lub luag haujlwm ntawm kev tiv thaiv kev khiav. Kev tuav dej: ua kom cov hmoov qhuav qhuav maj mam, pabcuam grey calcium hauv qhov kev txiav txim ntawm cov tshuaj tiv thaiv dej. Kev tsim kho: cellulose lubrication, tuaj yeem ua cov hmoov putty muaj kev tsim kho zoo. HPMC tsis koom nrog cov tshuaj tiv thaiv, tab sis tsuas yog ua lub luag haujlwm txhawb nqa.
Kev ntxhib los mos xim yog hloov tau yooj yim hauv kev xaiv xim, thiab tuaj yeem ua tiav qhov zoo tshaj plaws kos duab tsim cov nyhuv, thiab cov xim pob zeb tiag tiag hauv kev nrhiav kev ua neej zoo li qub, zoo dua li cov xim pleev xim, txhua tus muaj nws lub zog. Kev ntxhib los mos xim thiab lacquer hauv cov txheej txheem tsim khoom, txhawm rau txhawm rau tswj cov xim qub, feem ntau hauv cov txheej txheem kawg, peb yuav tsum siv cov kua roj vanish (lub teeb roj) tshuaj tsuag los tiv thaiv lawv cov duab kos duab lossis cov nyhuv pob zeb.
Lacquer, kev ntxhib los mos xim yog ib hom xim, feem ntau yog siv rau kho kom zoo nkauj phab ntsa. Lub ntuj diatom av nkos official lub vev xaib qhia txog qee qhov sib txawv ntawm kev ntxhib los mos xim thiab lacquer, kev ntxhib los mos xim thiab lacquer paub qhov txawv, cov hauv qab no tshwj xeeb kom pom qhov txawv ntawm lacquer thiab textures xim.
High quality latex high price, manufacturers kom txuag tau nqi, tsuas yog ntxiv me me ntawm qhov kev faib ua feem ntawm emulsion, tom qab ua tiag tiag pob zeb xim qhuav zaj duab xis xoob, tsis txaus ntom, xim zaj duab xis yog bibulous tus nqi yog loj, compressive zog yog txo, ib zaug ntsib los nag huab cua rau lub sij hawm ntev, cov nag yuav nkag mus rau hauv cov xim pleev xim, tiag tiag pob zeb xim dawb.
Qee cov chaw tsim khoom hauv kev tsim cov lacquer, feem ntau ntxiv ntau carboxymethyl cellulose, hydroxyethyl cellulose ua cov thickener, cov tshuaj no yog dej-soluble lossis hydrophilic, txheej zaj duab xis sab laug hauv txheej, txo cov dej tsis kam ntawm txheej.
Post lub sij hawm: Jun-09-2022