Nyob rau hauv cov txheej txheem ntawm putty hmoov, ntxiv ib tug tsim nyog tus nqi of Hydroxypropyl Methyl Cellulose (HPMC)tuaj yeem txhim kho nws cov kev ua tau zoo, xws li kev txhim kho cov rheology ntawm putty hmoov, ncua sij hawm tsim kho, thiab nce adhesion. HPMC yog cov thickener thiab hloov kho, dav siv hauv cov khoom siv hauv tsev, txheej, nplaum thiab lwm yam. Rau cov hmoov putty, ntxiv HPMC tuaj yeem tsis tsuas yog txhim kho kev tsim kho, tab sis kuj txhim kho lub peev xwm thiab kev tiv thaiv kev ua haujlwm ntawm putty.

 

Lub luag haujlwm ntawm hydroxypropyl methylcellulose
Txhim kho fluidity thiab kev tsim kho kev ua haujlwm: HPMC muaj cov nyhuv thickening zoo, uas tuaj yeem txhim kho fluidity ntawm putty hmoov, ua rau cov hmoov putty zoo ib yam thiab tsis tshua muaj dej ntws thaum thov thiab kho, thiab txhim kho kev ua tau zoo thiab kev tsim kho.

 

Txhim khu adhesion: Qhov sib ntxiv ntawm HPMC tuaj yeem txhim kho qhov adhesion ntawm putty hmoov thiab cov khoom siv hauv paus, tsis txhob muaj teeb meem xws li putty hmoov poob thiab tawg.

 

Txhim kho cov dej tuav: HPMC tuaj yeem ua kom cov dej khaws cia ntawm cov hmoov putty, ua kom cov dej ntws qeeb qeeb, yog li tiv thaiv cov putty los ntawm kev ziab thiab tawg, thiab pab cov putty kom muaj kev sib xws thaum lub sij hawm ziab.

 

Txhim khu kev tiv thaiv kab mob: Cov qauv polymer ntawm HPMC tuaj yeem txhim kho qhov yooj yim ntawm cov hmoov putty thiab txo cov kab nrib pleb los ntawm kev tawg, kub hloov lossis deformation ntawm lub hauv paus.

 

Tus nqi ntawm Hydroxypropyl Methylcellulose Ntxiv
Feem ntau hais lus, tus nqi ntawm hydroxypropyl methylcellulose ntxiv yog feem ntau ntawm 0.3% thiab 1.5% ntawm tag nrho qhov hnyav ntawm cov hmoov putty, nyob ntawm seb hom putty hmoov siv, qhov yuav tsum tau ua, thiab cov kev cai ntawm daim ntawv thov.

 

Tsawg viscosity putty hmoov: Rau qee cov hmoov putty uas yuav tsum tau muaj dej zoo dua, qhov qis dua HPMC ntxiv tuaj yeem siv, feem ntau yog nyob ib ncig ntawm 0.3% -0.5%. Lub hom phiaj ntawm hom putty hmoov no yog txhawm rau txhim kho kev tsim kho kev ua haujlwm thiab txuas ntxiv lub sijhawm qhib. Ntau dhau ntawm HPMC tuaj yeem ua rau cov hmoov putty kom khov thiab cuam tshuam rau kev tsim kho.

 

High viscosity putty hmoov: Yog tias lub hom phiaj yog txhawm rau txhim kho qhov adhesion thiab tawg tsis kam ntawm putty, lossis rau cov phab ntsa uas muaj kev kho mob nyuaj (xws li ib puag ncig nrog cov av noo siab), yuav siv ntau dua HPMC ntxiv, feem ntau yog 0.8% -1.5%. Lub hom phiaj ntawm cov hmoov putty no yog los txhim kho adhesion, tawg tsis kam thiab tuav dej.

 

Lub hauv paus rau kev kho tus nqi ntxiv
Siv ib puag ncig: Yog tias qhov chaw tsim kho muaj cov av noo los yog qhov kub thiab txias, cov nyiaj HPMC ntxiv feem ntau yog nce ntxiv los txhim kho cov dej tuav thiab kev ua haujlwm ntawm cov hmoov putty.
Putty hom: Ntau hom putty hmoov (xws li sab hauv phab ntsa putty, sab nrauv phab ntsa putty, nplua putty, coarse putty, thiab lwm yam) muaj cov kev cai sib txawv rau HPMC. Fine putty yuav tsum muaj cov nyhuv thickening, yog li tus nqi ntawm HPMC siv yuav ntau dua; thaum rau coarse putty, tus nqi ntxiv yuav kuj me me.
Lub hauv paus mob: Yog hais tias lub hauv paus yog ntxhib los yog muaj zog nqus dej, tej zaum nws yuav tsim nyog yuav tsum tau nce tus nqi ntawm HPMC ntxiv los txhim kho cov adhesion ntawm putty thiab lub hauv paus.

 

Kev ceev faj rau kev siv HPMC

Tsis txhob sib ntxiv ntau dhau: Txawm hais tias HPMC tuaj yeem txhim kho qhov kev ua tau zoo ntawm cov hmoov putty, HPMC ntau dhau yuav ua rau cov hmoov putty hnyav dhau thiab nyuaj rau kev tsim, thiab tseem cuam tshuam rau qhov ziab kom qhuav thiab qhov kawg hardness. Yog li ntawd, tus nqi ntxiv yuav tsum tau tswj raws li cov kev xav tau tshwj xeeb.

 

Kev sib xyaw nrog lwm cov tshuaj ntxiv: HPMC feem ntau yog siv ua ke nrog lwm cov tshuaj ntxiv xws li roj hmab hmoov, cellulose, thiab lwm yam. Yog tias nws siv nrog lwm cov thickeners lossis dej tuav cov neeg ua haujlwm, yuav tsum tau them nyiaj rau kev sib koom ua ke ntawm lawv kom tsis txhob muaj kev tsis sib haum xeeb.

 

Khoom stability:HPMCyog ib qho dej-soluble khoom. Kev sib ntxiv ntau dhau yuav ua rau cov hmoov putty nqus noo noo thiab deteriorate thaum khaws cia. Yog li ntawd, thaum lub sij hawm tsim thiab cia, tus nqi ntawm HPMC siv yuav tsum tau txiav txim siab los xyuas kom meej qhov ruaj khov ntawm putty hmoov nyob rau hauv ib txwm cia tej yam kev mob.

 

Ntxiv HPMC rau cov hmoov putty tuaj yeem txhim kho nws cov kev ua tau zoo, tshwj xeeb tshaj yog nyob rau hauv cov nqe lus ntawm kev tsim kho, dej tuav thiab tawg tsis kam. Feem ntau hais lus, qhov sib ntxiv ntawm HPMC yog nruab nrab ntawm 0.3% thiab 1.5%, uas tau hloov kho raws li qhov xav tau ntawm ntau hom putty hmoov. Thaum siv nws, nws yog ib qho tsim nyog yuav tsum sib npaug nws cov nyhuv thickening nrog kev tsim kho kom tsis txhob muaj teeb meem tshwm sim los ntawm kev siv ntau dhau.