Putty hmoov-hydroxypropyl methylcellulose

1. Cov kev qhia tseem ceeb ntawm hydroxypropyl methylcellulose (HPMC) yog dab tsi?

Hydroxypropyl cov ntsiab lus thiab viscosity, cov neeg siv feem ntau txhawj xeeb txog ob qhov ntsuas no. Cov uas muaj hydroxypropyl cov ntsiab lus siab feem ntau muaj cov dej tuav tau zoo dua. Ib qho uas muaj viscosity siab tau zoo dua dej tuav, kuj (tsis yog kiag li), thiab ib qho uas muaj viscosity siab yog zoo siv hauv cov cement mortar.

2. Lub luag haujlwm tseem ceeb ntawm daim ntawv thov ntawm HPMC hauv putty hmoov yog dab tsi?

Hauv cov hmoov putty, HPMC muaj peb txoj haujlwm ntawm thickening, dej tuav thiab kev tsim kho.

Thickening: Cellulose tuaj yeem ua kom tuab kom tshem tawm thiab ua kom cov tshuaj sib txawv nce thiab nqis, thiab tiv thaiv sagging. Kev tuav dej: ua kom cov hmoov putty qhuav maj mam, thiab pab cov hmoov tshauv calcium kom hnov ​​​​mob hauv qab dej. Kev tsim kho: Cellulose muaj cov nyhuv lubricating, uas tuaj yeem ua rau cov hmoov putty muaj kev tsim kho zoo.

3. Puas muaj kev sib raug zoo ntawm kev poob ntawm cov hmoov putty thiab HPMC?

Cov hmoov poob ntawm putty hmoov yog feem ntau muaj feem xyuam rau qhov zoo ntawm cov hmoov tshauv calcium, thiab muaj me ntsis ua rau HPMC. Cov ntsiab lus calcium ntawm grey calcium thiab qhov piv ntawm CaO thiab Ca (OH) 2 hauv cov calcium grey tsis haum, uas yuav ua rau cov hmoov poob. Yog tias nws muaj qee yam ua rau HPMC, ces qhov dej tsis zoo ntawm HPMC tseem yuav ua rau cov hmoov poob.

4. Tus nqi ntawm hydroxypropyl methylcellulose (HPMC) hauv putty hmoov yog dab tsi?

Tus nqi ntawm HPMC siv nyob rau hauv cov ntaub ntawv siv tau txawv nyob ntawm seb qhov kev nyab xeeb, qhov kub thiab txias, qhov zoo ntawm cov hmoov tshauv hauv zos, cov mis ntawm cov hmoov putty thiab 'zoo xav tau los ntawm cov neeg siv khoom'.

5. Qhov viscosity tsim nyog ntawm hydroxypropyl methylcellulose (HPMC) yog dab tsi?

Feem ntau, 100,000 yuan ntawm putty hmoov yog txaus, thiab qhov yuav tsum tau rau mortar yog siab dua, thiab 150,000 yuan yuav tsum tau siv yooj yim. Ntxiv mus, qhov tseem ceeb tshaj plaws ua haujlwm ntawm HPMC yog dej tuav, ua raws li thickening. Nyob rau hauv cov hmoov nplej, tsuav yog cov dej tuav tau zoo thiab cov viscosity tsawg (70,000-80,000), kuj tseem ua tau. Tau kawg, qhov siab dua qhov viscosity, qhov zoo dua qhov txheeb ze dej tuav. Thaum lub viscosity siab tshaj 100,000, lub viscosity tsis cuam tshuam rau cov dej tuav. loj.

6. Yuav ua li cas xaiv qhov tsim nyog hydroxypropyl methylcellulose (HPMC) rau ntau lub hom phiaj?

Daim ntawv thov ntawm cov hmoov putty: qhov yuav tsum tau muaj tsawg, viscosity yog 100,000, nws txaus, qhov tseem ceeb yog kom dej zoo. mortar daim ntawv thov: siab yuav tsum, siab viscosity, 150,000 yog zoo dua, kua nplaum daim ntawv thov: instant khoom yuav tsum tau, siab viscosity.

7. Daim ntawv thov ntawm HPMC nyob rau hauv cov hmoov putty, yog vim li cas rau cov npuas nyob rau hauv lub putty hmoov?

Hauv cov hmoov putty, HPMC plays peb lub luag haujlwm ntawm thickening, dej tuav thiab kev tsim kho. Tsis txhob koom nrog kev tawm tsam. Ua rau npuas:

1. Muab dej ntau dhau.

2. Thaum cov txheej hauv qab tsis qhuav, lwm txheej yog khawb rau saum, thiab nws yooj yim ua npuas dej.