HPMC (hydroxypropyl methylcellulose) yog cellulose-based nonionic polymer dav siv hauv kev tsim kho, khoom noj khoom haus thiab kev lag luam tshuaj. Hauv kev tsim kho, HPMC feem ntau yog siv los ua cov thickener, dej tuav tus neeg saib xyuas, nplaum thiab rheology hloov kho hauv cov nplais nplaum nplaum nplaum. HPMC plays lub luag haujlwm tseem ceeb hauv kev txhim kho lub plam tsis kam thiab qhib lub sijhawm ntawm cov ntawv nplaum nplaum nplaum.
Slip resistance yog hais txog lub peev xwm ntawm cov pobzeb nplaum los tuav lub zog shear uas xav tau los tiv thaiv kev hloov pauv hauv ib qho kev thauj khoom tshwj xeeb. Hauv lwm lo lus, plam tsis kam yog qhov tuav ntawm cov pobzeb ntawm lub substrate. Cov pobzeb nplaum yuav tsum muaj kev tiv thaiv zoo los xyuas kom meej tias cov vuas nyob ruaj khov thaum lub sijhawm thiab tom qab kev teeb tsa. Qhov laj thawj tseem ceeb ntawm kev ua haujlwm tsis txaus yog qhov tsis muaj adhesion ntawm cov nplaum thiab cov substrate. Qhov no yog qhov chaw HPMC ua lub luag haujlwm tseem ceeb hauv cov ntawv nplaum nplaum.
HPMC ua raws li cov thickener thiab dej tuav tus neeg sawv cev hauv cov nplais nplaum nplaum. Nws thaiv kev txav ntawm cov dej hauv cov nplaum, yog li ua kom nws cov viscosity thiab yog li plam tsis kam. HPMC kuj muab cov yeeb yaj kiab nyias, sib xws, txuas ntxiv ntawm cov pobzeb thiab cov substrate. Cov yeeb yaj kiab tsim ib tus choj ntawm ob qhov chaw, tsim kom muaj kev sib raug zoo thiab txhim kho cov nplaum tuav ntawm cov nplais.
HPMC kuj tseem txhim kho lub zog tensile thiab elongation zog ntawm cov nplais nplaum. Qhov no txhais tau hais tias thaum thauj khoom siv rau cov vuas, HPMC-muaj cov nplaum yuav ua rau deform ntau dua ua ntej tawg, yog li ua rau tag nrho lub peev xwm ntawm cov nplaum tiv thaiv kev hloov pauv.
Lub sijhawm qhib yog hais txog lub sijhawm uas cov nplaum nplaum tseem ua haujlwm tau tom qab thov. Qhov no yog ib qho tseem ceeb feature ntawm cov nplais nplaum nplaum vim nws tso cai rau lub installer txaus lub sij hawm los kho cov pobzeb ua ntej cov nplaum dries. HPMC txuas ntxiv lub sijhawm qhib ntawm cov nplais nplaum los ntawm kev ua raws li kev hloov kho rheology.
Rheology yog kev kawm txog cov ntaub ntawv ntws thiab deform li cas. Pobzeb nplaum formulations yuav tsum muaj rheology tshwj xeeb los tswj kev ua haujlwm thiab adhesion. HPMC hloov cov rheology ntawm pobzeb nplaum formulations los ntawm kev cuam tshuam lawv viscosity, thixotropy, thiab plasticity. HPMC ua kom cov viscosity ntawm cov pobzeb nplaum, ua rau nws nyuaj thiab ua rau nws tsis muaj dej. Cov dej ntws qeeb ua rau cov nplaum ua kom yooj yim rau kev ua thiab daim ntawv, uas pab qhib lub sijhawm qhib. HPMC tseem tuaj yeem txhim kho thixotropy ntawm cov nplais nplaum. Thixotropy yog lub peev xwm ntawm cov nplaum kom rov qab mus rau nws qhov qub viscosity tom qab raug cuam tshuam. Qhov no txhais tau hais tias HPMC-muaj cov nplaum nplaum tsis tshua muaj kev sib cais lossis sag tom qab deformation thiab tuaj yeem rov qab mus rau kev pabcuam hauv lub sijhawm ntev dua.
HPMC txhim kho cov plasticity ntawm ceramic pobzeb nplaum. Plasticity yog hais txog lub peev xwm ntawm cov nplaum kom nyob twj ywm ua haujlwm nyob rau hauv qhov sib txawv ntawm qhov kub thiab txias. Adhesives uas muaj HPMC tsis cuam tshuam los ntawm qhov kub thiab av noo hloov pauv thiab tswj lawv cov haujlwm ua haujlwm thiab cov khoom adhesion. Cov yas no ua kom cov pobzeb nplaum tseem siv tau thoob plaws hauv nws lub neej kev pabcuam thiab yuav tsis tawg lossis cais tawm ntawm cov substrate.
Lub luag hauj lwm ntawm HPMC nyob rau hauv cov pobzeb nplaum formulations los txhim kho plam tsis kam thiab qhib lub sij hawm tseem ceeb heev. Nws ua raws li cov thickener, dej tuav tus neeg sawv cev, nplaum, rheology hloov kho, thiab txhim kho lub zog tensile, elongation thiab plasticity ntawm pobzeb adhesives. Adhesives uas muaj HPMC yog ib qho yooj yim mus use, ua tau zoo, thiab tuav adhesion thoob plaws hauv lawv lub neej kev pab. Nws dav siv nyob rau hauv ntau yam kev siv kev tsim kho pom tau tias nws muaj kev nyab xeeb, ntau yam thiab siv tau zoo.
HPMC yog ib qho tseem ceeb muaj nyob rau hauv cov pobzeb nplaum formulations los txhim kho plam tsis kam thiab qhib lub sij hawm. Nws cov khoom ua rau nws zoo tagnrho rau cov pobzeb nplaum manufacturers thiab cov neeg cog lus uas xav tau cov nplaum nplaum nrog kev ua haujlwm, cohesion thiab muaj zog sib txuas. HPMC yog li ntawd ua rau muaj txiaj ntsig zoo rau niaj hnub architecture thiab muab ntau yam txiaj ntsig yam tsis muaj kev cuam tshuam tsis zoo rau ib puag ncig lossis tib neeg kev noj qab haus huv.
Post lub sij hawm: Sep-21-2023