Taw qhia rau hydroxyPropyyl Metthylcellulose (HPMC)
HydroxyPropyyl methylulose, feem ntau hu ua HPMC, yog lub cellulose derivative hloov los ntawm ntuj cellulose. Nws yog dav siv nyob rau hauv kev tsim kho, kws tshuaj, zaub mov thiab lwm yam kev lag luam, tshwj xeeb hauv kev lag luam PVC. Qhov sib xyaw yog cov hmoov dawb, tsis muaj ntxhiab nrog cov dej ua kom zoo thiab cov khoom siv ntawm lub cev thiab tshuaj lom neeg uas ua rau nws haum rau ntau yam kev siv.
Txhim kho rheological cov khoom:
Ib qho ntawm cov kev pab tau loj ntawm HPMC mus rau lub tshuab kev lag luam PVC yog nws qhov kev cuam tshuam rau cov khoom sib dhos. Nws ua raws li kev ntseeg rheology, cuam tshuam rau kev ntws thiab deformation ntawm PVC sib nraus thaum ua. Qhov no yog qhov tshwj xeeb tshaj yog nyob rau hauv extrusion thiab kev txhaj tshuaj molding cov txheej txheem.
Txhim Kho PVC Adhesion:
HPMC paub txog nws lub peev xwm los txhim kho adhesion, uas nyob rau hauv lub rau pvc kev lag luam txhais tau tias zoo dua kev sib raug zoo ntawm pvc sib txuas thiab lwm yam ntaub ntawv. Qhov no tshwj xeeb tshaj plaws nyob rau hauv kev tsim cov khoom siv ntawm cov khoom sib xyaw ua ke ntawm cov khoom sib xyaw ua ke ntawm cov khoom sib xyaw, qhov uas muaj zog interfacial yog qhov tseem ceeb rau kev ua tau zoo.
Dej khaws cia thiab ruaj khov:
Nyob rau hauv PVC cov qauv, nws yog qhov tseem ceeb los tswj cov ntsiab lus dej ntawm cov qib tshwj xeeb thaum ua. HPMC kev ua raws li dej tuav tus neeg sawv cev, tiv thaiv kom qhuav ntxov thiab ua kom muaj ntau qib dej. Qhov no yog qhov tshwj xeeb tshaj nyob rau hauv cov ntawv thov uas cov dej hauv lub xeev ntawm PVC sib xyaw cuam tshuam rau cov khoom ntawm cov khoom kawg.
Cov Ntawv Tso Tawm Tso Tawm:
HPMC feem ntau siv ua ke nrog PVC hauv kev tswj hwm cov yeeb yaj kiab. Qhov no yog ib txwm muaj kev thov kev ua liaj ua teb uas siv los tswj cov tshuaj tso chiv lossis tshuaj tua kab. Lub txhawb nqa thiab paub txog cov xeeb ceem ntawm HPMC pab txhawb kev tso tawm.
Kev cuam tshuam rau 80 zaj duab xis cov khoom:
Ntxiv HPMC rau PVC cov qauv tuaj yeem cuam tshuam cov khoom ntawm lub txiaj ntsig zaj duab xis. Qhov no suav nrog kev sib xws xws li hloov tau, transparency thiab kev kho tshuab zog. Ua raws li cov kev xav tau tshwj xeeb ntawm cov khoom kawg, HPMC tuaj yeem kho tau los muab cov PVC zaj duab xis cov khoom xav tau.
Kub thiab UV Kuj:
PVC cov khoom lag luam feem ntau yuav tsum tau tiv thaiv ntau ntawm cov kev mob ib puag ncig. HPMC txhim kho kev ua tau zoo ntawm PVC los ntawm kev nce nws kev tiv thaiv kom kub hloov thiab UV hluav taws xob. Qhov no yog qhov tshwj xeeb tshaj yog nyob rau sab nraum zoov daim ntawv teev qhov twg yog nthuav tawm hnub ci thiab huab cua.
Kev kho thiab cov neeg sawv cev tsis tuaj yeem:
HPMC yog siv los ua cov phau ntawv nyob rau hauv PVC cov qauv, pab hauv cocegle cohesion thiab txhawb kev tsim ntawm cov uniform clumps. Ib qho ntxiv, nws ua raws li kev ncua tus neeg sawv cev, tiv thaiv cov lus los ntawm kev faib tawm thiab ua kom muaj kev faib tawm hauv PVC sib dhos.
Txhim kho cov piv txwv qhia:
Qhov ua tau zoo ntawm HPMC hauv PVC cov ntawv thov feem ntau yog nyob ntawm cov qauv sib piv. Kev ntsuas cov kev xav ntawm HPMC nrog lwm cov kev ntxiv thiab PVC Resin yog qhov tseem ceeb rau kev ua tiav cov khoom xav tau ntawm cov khoom kawg.
Compatibility nrog lwm cov tshuaj ntxiv:
Kev sib xyaw nrog lwm cov tshuaj sib txuas, cov hlua khi thiab cov stabilizers yog qhov tseem ceeb ntawm kev sib xyaw HPMC rau hauv PVC cov qauv. Ua kom ntseeg tau tias HPMC cuam tshuam nrog rau lwm cov Cheebtsam yog qhov tseem ceeb los tswj cov kev ua tau zoo tag nrho thiab kev ruaj ntseg ntawm PVC sib nraus.
Ua cov mob:
Ua cov kev mob, suav nrog qhov kub thiab kub thiab lub zog thaum lub sij hawm extrusion lossis moulding, tuaj yeem cuam tshuam rau kev ua haujlwm ntawm HPMC. Nkag siab txog qhov kev ruaj khov ruaj khov thiab kev tsim cov cai ntawm HPMC yog qhov tseem ceeb rau kev ua kom zoo dua kev tsim qauv.
Hauv kev xaus
Hauv cov ntsiab lus, hydroxypropyl methylcellulose plays ib multifaceted lub luag haujlwm hauv kev ua lag luam (adhesion, dej ceev ceev thiab tag nrho cov khoom lag luam. Raws li kev lag luam txuas ntxiv hloov zuj zus, HPMC cov yam ntxwv tshwj xeeb yuav yuav txuas ntxiv siv hauv cov ntawv thov tshiab thiab nce qib hauv kev siv tshuab. Raws li cov kws tshawb nrhiav thiab cov tuam ntxhab delve ntxaum rau hauv lub synmc thiab pvc, muaj peev xwm rau cov qauv tshiab thiab txhim kho PVC cov khoom yog loj.
Lub Sijhawm Post: Kaum-12-2023