Putty yog dav siv nyob rau hauv kev tsim kho tej yaam num raws li cov khoom siv los sau qhov khoob thiab qhov.Nws yog cov khoom siv ntau yam uas tuaj yeem siv rau ntau yam kev siv, suav nrog kev kho cov phab ntsa, qab nthab, thiab cov plag tsev.Hydroxypropyl methylcellulose (HPMC) yog ib qho tseem ceeb ntawm putty, muab nws nrog ntau yam uas yuav tsum tau muaj, nrog rau zoo heev adhesion, dej tuav thiab ua hauj lwm.Kab lus no yuav tshuaj xyuas daim ntawv thov ntawm HPMC hauv putty thiab txheeb xyuas qee qhov teeb meem uas yuav tshwm sim hauv nws txoj kev siv thiab lawv cov kev daws teeb meem.
Kev siv HPMC hauv putty
HPMC yog cov dej-soluble cellulose ether nrog cov yeeb yaj kiab zoo heev.Nws yog siv los ua cov thickener, nplaum, thiab stabilizer hauv ntau daim ntawv thov kev lag luam thiab kev lag luam, suav nrog putties.Ntxiv HPMC rau putty tuaj yeem txhim kho nws txoj haujlwm ua haujlwm, ruaj khov thiab dej tsis kam.HPMC ua haujlwm los ntawm kev ua kom cov viscosity ntawm putty, yog li pab nws ua raws li qhov zoo dua.Nws kuj tseem txhim kho qhov kev sib kis ntawm putty, ua kom yooj yim rau kev thov rau saum npoo.
HPMC kuj tseem siv los ua cov ntaub qhwv hauv cov ntaub ntawv, pab cov ntaub ntawv lo ua ke thiab nyob ruaj khov.Nws tseem tiv thaiv lub putty los ntawm kev tawg, shrinking los yog crumbling.HPMC ua raws li ib tug binder, tsim ib tug barrier nyob ib ncig ntawm cov hais nyob rau hauv lub putty, tiv thaiv lawv los ntawm tawg.Qhov no nce lub zog ntawm putty thiab ua rau nws ruaj khov dua.
Tsis tas li ntawd, ntxiv HPMC rau putty tuaj yeem txhim kho nws txoj kev tuav dej.HPMC pab cov putty khaws cov dej noo thiab tiv thaiv kom tsis txhob ziab sai heev.Qhov no muab sijhawm rau cov neeg siv sijhawm ntxiv los siv cov putty thiab xyuas kom nws ua raws li qhov chaw kom zoo.
Teeb meem nrog HPMC hauv Putty
Thaum HPMC muaj ntau qhov zoo thaum ntxiv rau putty, qee qhov teeb meem yuav tshwm sim thaum nws siv.Qee cov lus nug no suav nrog:
1. Cov adhesion tsis zoo: Thaum HPMC cov ntsiab lus nyob rau hauv lub putty tsawg dhau, qhov adhesion tsis zoo yuav tshwm sim.HPMC yog lub luag haujlwm rau kev txhim kho cov adhesion ntawm putty rau saum npoo.Tsis muaj HPMC txaus, lub putty yuav tsis ua raws li qhov chaw kom zoo, ua rau nws nyuaj rau kev thov thiab ua rau nws tawg lossis nti.
2. Kev sib xyaw tsis yooj yim: Ntxiv HPMC ntau dhau rau hauv lub putty yuav ua rau nyuaj rau kev sib xyaw.Lub viscosity ntawm HPMC yog qhov siab, thiab siv ntau dhau yuav ua rau cov putty tuab heev thiab nyuaj rau sib tov kom huv si.Qhov no tuaj yeem ua rau qhov sib tov tsis sib xws thiab tsis ua raws li qhov chaw zoo.
3. Lub sij hawm ziab: Qee zaum, HPMC yuav cuam tshuam lub sij hawm ziab ntawm putty.HPMC ncua sij hawm kom qhuav ntawm lub putty, uas tej zaum yuav xav tau nyob rau hauv qee lub sijhawm.Txawm li cas los xij, yog tias HPMC ntxiv ntau dhau lawm, lub putty yuav siv sij hawm ntev kom qhuav, ua rau qeeb ntawm kev tsim kho.
Kev daws teeb meem HPMC hauv Putty
1. Kev adhesion tsis zoo: Txhawm rau tiv thaiv kev ua kom tsis zoo, yuav tsum tau ntxiv ib qho HPMC.Tus nqi tsim nyog yuav nyob ntawm seb hom ntawm qhov chaw uas lub putty yuav raug siv, ib puag ncig tej yam kev mob thiab cov khoom uas xav tau putty.Yog tias muaj HPMC tsis txaus nyob rau hauv lub putty, ntxiv HPMC yuav tsum tau muab ntxiv los txhim kho cov adhesion ntawm putty.
2. Kev sib xyaw nyuaj: Thaum sib tov putty uas muaj HPMC, nws yog qhov zoo tshaj kom ntxiv nws maj mam thiab sib tov kom huv si.Qhov no yuav ua kom paub tseeb tias HPMC tau muab faib ua tus sib npaug thoob plaws hauv lub putty thiab tias cov putty yog sib xyaw kom huv si los ua ib qho kev sib tov sib xyaw.
3. Lub sij hawm ziab: Txhawm rau kom tsis txhob ziab qhuav ntev dhau lawm, yuav tsum tau ntxiv HPMC tus nqi tsim nyog.Yog tias muaj HPMC ntau dhau rau hauv lub putty, txo cov nyiaj ntxiv yuav pab txo lub sijhawm ziab.Tsis tas li ntawd, ib tug yuav tsum xyuas kom meej tias cov putty yog sib xyaw kom huv si kom tsis txhob muaj ib feem uas muaj ntau tshaj HPMC.
Zuag qhia tag nrho, HPMC yog ib qho tseem ceeb ntawm putty, muab nws nrog ntau yam khoom tsim nyog, nrog rau kev ua kom zoo, kev tuav dej, thiab kev ua haujlwm.Txawm hais tias qee qhov teeb meem tuaj yeem tshwm sim nrog daim ntawv thov ntawm HPMC, cov no tuaj yeem daws tau yooj yim los ntawm kev siv tus nqi tsim nyog thiab sib xyaw kom zoo.Thaum siv kom raug, HPMC tuaj yeem txhim kho qhov zoo thiab ua haujlwm ntawm putty, ua rau nws yog ib qho tseem ceeb hauv kev tsim kho.
Post lub sij hawm: Sep-22-2023