Los ntawm kev kawm cov nyhuv ntawm kev sib txawv ntawm hydroxypropylulose (HPMC) ntawm lub tshuab hluav taws xob, thiab cov tshuab hluav taws xob tsim nyog sib sau ua ke nrog lub tshuab tsom ua ke nrog lub tshuab tsom me me. Cov txiaj ntsig qhia tau tias lub tshuaj khib nyiab uas txo qis nrog cov ntsiab lus ntawm HPMC, tab sis cov muaj peev xwm ua kom muaj peev xwm ua tau zoo. Extrudability; puab tus nqi khaws cia thiab nkag mus tsis tau zoo nyob rau hauv tus kheej qhov hnyav, uas yog, nrog rau kev nce HPMC cov ntsiab lus, kev txhim kho HPMC, hloov pauv lub sijhawm thiab luam tawm; Los ntawm qhov pom ntawm rheology, nrog nrog kev nce cov ntsiab lus ntawm HPMC, cov kev ntxhov siab rau cov slurry nce ntau, thiab cov khoom siv hloov pauv; Lub thixotrostropy ua ntej nce thiab tom qab ntawd txo qis nrog kev nce cov ntsiab lus ntawm HPMC, thiab lub tshuab luam tawm; Cov ntsiab lus ntawm HPMC nce ntau dhau yuav ua rau lub cug cib ua kom nce thiab lub zog nws raug pom zoo tias cov ntsiab lus ntawm HPMC yuav tsum tsis pub tshaj 0.20%.
Nyob rau hauv xyoo tsis ntev los no, muaj lub npe ntaus ntawv 3D ( Cov txheej txheem ntawm pwm ntawm 3D luam ntawv tshuab tau txhim kho cov qauv kev tsim kho thiab tau tsim nyog rau kev tsim kho cov haujlwm hauv ntau qhov chaw hnyav. Kev sib xyaw ua ke ntawm 3D tshuab luam ntawv tshuab thiab kev tsim kho teb yog qhov tshiab thiab muaj kev cog lus. Ntawm tam sim no, cov ntaub ntawv tso cai ua ke yog 3D cov txheej txheem sawv cev ntawm cov txheej txheem sib xyaw ua ke (nrog rau cov txheej txheem contour sib txuas nrog cov txheej txheem (cov txheej txheem sib txuas). Ntawm lawv, qhov extrusion stacking cov txheej txheem muaj qhov zoo ntawm kev sib txawv me me los ntawm cov kev ua vaj tse me me thiab cov nqi tsim kho. Qhov txiaj ntsig zoo dua tau dhau los ua cov kev tshawb nrhiav tam sim no ntawm 3D luam ntawv tshuab ntawm cov khoom siv Maas.
Rau cov ntaub ntawv tso cai ua kom siv raws li "Cov ntaub ntawv tso kua mis" rau ib qho kev xav tau ntawm cov khoom siv cov txheej txheem kev tsim kho yuav tsum tau ua kom tau raws li qhov yuav tsum tau ua kom tiav, ntawm qhov toas-based cov khoom siv yuav tsum tau muab khi, uas yog, nws tsis muaj kev sib tsoo ntawm nws tus kheej hnyav thiab lub siab ntawm lub sab saud txheej. Ib qho ntxiv, cov qauv kev ua yeeb yam ntawm 3D luam ntawv ua rau txheej ntawm cov khaubncaws sab nraud povtseg ntawm cov khoom siv interface, cov ntaub ntawv tsim hauv tsev yuav tsum muaj cov nplaum zoo. Hauv cov ntsiab lus, tus qauv tsim ntawm extrudability, kev hloov pauv, thiab siab nplaum yog tsim nyob rau tib lub sijhawm. Cov khoom siv xis mas yog ib qho ntawm qhov yuavtsum tau kawm uantej rau daim ntawv thov ntawm 3D luam ntawv tshuab ntawm kev tsim kho. Kho cov txheej txheem hydration thiab rheological cov khoom siv ntawm cov xis mas cov khoom siv yog ob txoj hauv kev los txhim kho cov kev ua haujlwm saum toj no. Kev hloov kho ntawm cov txheej txheem hydration ntawm cov khoom siv xis ntxhib nws yog qhov nyuaj rau kev siv, thiab nws yooj yim los ua teeb meem xws li cov ntawv foob; Thiab cov kev cai ntawm cov khoom siv rheological yuav tsum tau kom lub cev nqaij daim ntawv thiab cov qauv kev tshawb nrhiav, ntxhia moulding. visco Raws li cov khoom siv ntawm cov cement-raws li Cov ntaub ntawv kom ua tiav kev luam ntawv zoo dua.
HydroxyPropyyl methylcellose (HPMC) yog ib qho tuab polymer thickener. Lub Hydroxyl thiab Erether rau ntawm cov molecular chart tuaj yeem ua ke nrog dej ua ke los ntawm hydrogen bonds. Qhia nws mus rau hauv cov pob zeb ua tau zoo txhim kho nws cov cohesion. thiab dej khaws cia. Tam sim no, kev tshawb fawb ntawm cov txiaj ntsig ntawm HPMC ntawm cov khoom ntawm cov nyhuv ntawm cov khoom siv rau hauv fws, thiab kev tshawb fawb me me, tau ua rau cov khoom siv 3D luam xws li extrudability, teeb meem, thiab lwm yam). Tsis tas li ntawd, vim tsis muaj cov qauv kev sib tw rau cov qauv sib xyaw 3D, txoj kev ntsuas tshuaj xyuas cov ntawv luam tawm tsis tau tsim. Cov khoom siv stackability ntawm cov khoom raug ntsuas los ntawm tus naj npawb ntawm cov ntawv luam tawm nrog qhov tseem ceeb deformation lossis qhov siab tshaj plaws luam ntawv. Txoj kev ntsuam xyuas saum toj no yog yuav ua kom muaj kev kawm siab, tsis zoo rau ntiaj teb, thiab cov txheej txheem cumbersome. Txoj kev ua tau zoo tshuaj ntsuam txoj kev ua tau zoo thiab tus nqi hauv engineering.
Hauv daim ntawv no, kev sib txawv ntawm HPMC tau qhia rau hauv cov khoom siv colle tau txhim kho los ntawm kev kawm cov tshuab luam tawm ntawm 3D cov khoom siv hluav taws xob thiab cov khoom siv neeg kho mob. Raws li cov khoom xws li fluerity raws li cov txiaj ntsig tau zoo, thiab cov tsis sib xws ntawm cov ntawv luam tawm tau kuaj; Raws li kev kawm ntawm micphopic morphology ntawm cov qauv, lub tshuab sab hauv ntawm kev ua tau zoo ntawm cov khoom luam tawm. Nyob rau tib lub sijhawm, 3D luam tawm cov khoom siv ua haujlwm tau tsim. Txoj kev ntsuas kev ua tau zoo ntawm cov luam tawm tau txhawm rau txhawb nqa daim ntawv thov ntawm 3D luam ntawv tshuab ntawm kev tsim kho.
Lub Sijhawm Post: Sep-27-2022