HPMC (HydroxyPropy Cellulose) yog cov polymer dav siv hauv kev tsim kho kev tsim kho, tshwj xeeb tshaj yog nyob rau hauv cov neeg nplua nuj uas muaj kev ua tau zoo tshaj. Raws li tus neeg sawv cev tuab dua, dej tuav tus neeg sawv cev, cov nplaum thiab cov yeeb yaj kiab ua yeeb yam thiab txhim kho cov khoom siv lub cev thiab kev tsim kho ntawm cug.
1. Mechanism ntawm Kev Ua HPMC
HPMC yog cov dej-soluble cellulose ether. Lub hydroxypropyl thiab methyl chaw nyob rau hauv nws cov qauv molecular muab nws cov dej ua kom zoo thiab tshuaj lom neeg ruaj khov. Thaum HPMC yog yaj hauv dej, nws tuaj yeem tsim ib qho kev daws teeb meem viscous colloourcal. Qhov kev daws colloidal no ua si txoj haujlwm tseem ceeb hauv qab no hauv kev tshuaj khib:
Thickening cov nyhuv: HPMC tuaj yeem nce cov tshuaj tua hluav taws tom qab ua rau cov dej cug, yog li ua kom muaj kuab ua haujlwm ntawm lub tshuaj khib. Qhov no ua rau cov tshuaj khib yooj yim dua rau kev tsim kho, thaum txo cov ntshav thiab ua kom zoo ntawm cov tshuaj khib thiab ua kom muaj kev sib xyaw ntawm lub sijhawm tsim.
Dej khaws cia: HPMC muaj cov dej ua kom zoo. Nws tuaj yeem khaws tau ntau qhov dej noo hauv cov tshuaj khib thiab txo cov dej evaporate ntau dhau. Qhov no yog qhov tseem ceeb los txhim kho qhov ua tau zoo thiab lub zog ntawm lub tshuaj khib, tshwj xeeb tshaj yog thaum ua haujlwm hauv cov huab cua qhuav lossis ntawm cov pa taws heev.
Zaj duab xis-ua nyhuv: HPMC tuaj yeem tsim cov yeeb yaj kiab tuab hauv cov tshuaj khib. Zaj yeeb yaj kiab no tsis tuaj yeem tsuas txhim kho cov nplaum ntawm lub tshuaj khib, tab sis kuj tseem txhim kho cov tawg tsis taus thiab ruaj khov ntawm lub cug. Nyob rau tib lub sijhawm, cov yeeb yaj kiab no tseem muaj qee qib ntawm waterproofness, uas tuaj yeem txhim kho cov dej tsis huv ntawm lub tshuaj khib.
Bonding Effect: muaj kev tiv thaiv kab cug tuaj yeem ua rau cov khoom siv tshuaj khib nyiab thiab kom muaj zog ntawm cov tshuaj khib thiab cov khoom siv.
2. Cov nyhuv ntawm HPMC ntawm collple cov khoom
Txhim kho cov haujlwm ntawm cug: kev ua haujlwm yog qhov taw qhia tseem ceeb ntawm kev ua haujlwm cug. Qhov kev sib txuas ntawm HPMC nce viscosity ntawm cov tshuaj khib, yog li txhim kho qhov ua haujlwm ntawm lub tshuaj khib. Tshuaj khib yim yooj yim dua rau kev tsim kho thiab tuaj yeem tsim cov khaub ncaws nyias nyias nyias txheej ntawm phab ntsa, txo cov hollows thiab tawg thaum lub sijhawm kev tsim kho.
Txhim kho cov dej khaws cia: Kev khiav ceev tseg yog ib qho tseem ceeb cuam tshuam rau qhov tawv zoo ntawm cug. Cov dej khaws cov nyhuv ceev ntawm HPMC tso cai rau cov dej phib hlau hauv kev muab cov txheej txheem thawj zaug thiab cov txheej txheem ua kom muaj zog, tsis txhob tawg ua los ntawm cov dej lim dej ntau dhau.
Txhim kho cov nrib pleb thiab khov ua cov tshuaj cug: cov qauv duab dhos ua kom tsim los ntawm HPMC txhim kho kev ntxhov siab thaum lub sijhawm ua kom tawv. Nyob rau tib lub sijhawm, cov dej khaws cov nyhuv khaws cia ntawm HPMC kuj txhim kho cov qos ua kom zoo rau cov tshuaj khib nyiab los ntawm khov-thaw mus.
Kev tsim kho kom tsim tau zoo: Txij li HPMC txhim kho kev ua haujlwm thiab dej ua haujlwm tuaj yeem ua cov haujlwm cloule, txo lub sijhawm kho dua tshiab, uas yog txhim kho cov kev tsim kho tag nrho.
3. Daim ntawv thov ntawm HPMC hauv cov ntaub ntawv tsim tsev
Pobzeb Tais: Ntxiv HPMC rau Pobzeb Adhesive tuaj yeem txhim kho cov dej ua kom zoo, txo cov ntaub thaiv, txo cov vuas ua kom khov kho rau phab ntsa thiab plag tsev.
Sab nrauv phab ntsa insulation cug: HPMC yog txhim kho cov rwb thaiv tsev rwb thaiv tsev thiab nthuav tawm cov haujlwm ntawm lub neej ntawm cov rwb thaiv tsev txheej.
Kev siv tshuaj khib tus kheej: nyob rau hauv tus kheej txoj kev sib nrum cug, qhov ntxiv ntawm HPMC pab kom cov tshuaj khib nyiab thiab ua kom cov tshuaj khib nyiab, ua kom lub ntsej muag zoo nkauj ntawm av thiab kev tsim kho.
Plastering cap: lub thickening thiab dej-khaws cov kev cuam tshuam ntawm HPMC ua lub plastering collping zoo nkauj thaum kev tsim kho thaum lub sijhawm kev tsim kho. Cov tshuaj khib nyiab txheej tom qab daim ntawv thov yog ntau yam sib txawv thiab ntom thiab ntom, txo cov hollows thiab tawg thaum lub sijhawm kev tsim kho.
Daim ntawv thov ntawm HPMC nyob rau hauv colle volf cap ua tau zoo txhim kho cov ntaub ntawv hauv tsev, tshwj xeeb tshaj yog nyob rau hauv kev txhim kho cov ntaub ntawv ua haujlwm, kev ua kom dej tsis kam thiab ua kom zoo nkauj ntawm lub tshuaj khib. Nrog rau kev txhim kho txuas ntxiv ntawm cov khoom ua tau zoo hauv kev tsim kho, daim ntawv thov kev cia siab ntawm HPMC hauv cov ntaub ntawv hauv tsev yuav dav. Los ntawm kev ua kom zoo ntxiv cov nyiaj thiab cov mis ntawm HPMC, kev tsim kho cov ntaub ntawv hauv tsev tuaj yeem txhim kho ntxiv, muab kev lees paub qhov zoo rau qhov zoo ntawm kev tsim kho cov dej num.
Lub Sijhawm Post: Feb-17-2025