HPMC siv rau hauv phab ntsa putty

1. Cov cim qhia tseem ceeb ntawm hydroxypropyl methyl cellulose (HPMC) yog dab tsi?

Cov ntsiab lus thiab viscosity ntawm HPMC Hydroxypropyl, feem ntau cov neeg siv txhawj xeeb txog ob qho cim no. Kev khaws dej feem ntau zoo dua rau cov neeg uas muaj cov ntsiab lus hydroxypropyl siab. viscosity siab, kev khaws dej, zoo dua (tsis yog qhov tseeb), thiab viscosity siab, zoo dua siv rau hauv cov cement mortar.

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

Hauv phab ntsa putty, HPMC muaj peb lub luag haujlwm: thickening, dej khaws cia thiab kev tsim kho.

Ua kom tuab: Cellulose tuaj yeem ua kom tuab kom dai thiab ua kom cov tshuaj sib npaug, thiab tiv thaiv kev poob qis. Kev khaws dej: ua kom cov phab ntsa putty qhuav qeeb qeeb, thiab pab cov calcium grey kom ua haujlwm raws li dej. Kev tsim kho: Cellulose muaj cov nyhuv roj, uas tuaj yeem ua rau cov phab ntsa putty ua haujlwm tau zoo.

3. Qhov poob ntawm phab ntsa putty puas cuam tshuam nrog HPMC?

Qhov poob ntawm phab ntsa putty feem ntau yog cuam tshuam nrog qhov zoo ntawm cov tshauv calcium, tab sis tsis yog rau HPMC. Yog tias cov calcium uas muaj nyob hauv cov tshauv calcium thiab qhov piv ntawm CaO thiab Ca(OH)2 hauv tshauv calcium tsis tsim nyog, nws yuav ua rau cov hmoov poob. Yog tias nws muaj feem cuam tshuam nrog HPMC, ces HPMC qhov kev khaws dej tsis zoo kuj yuav ua rau cov hmoov poob.

4. Hydroxypropyl methyl cellulose (HPMC) muaj pes tsawg hauv cov khoom siv pleev phab ntsa?

Tus nqi ntawm HPMC siv rau hauv daim ntawv thov tiag tiag sib txawv nyob ntawm huab cua, kub, qhov zoo ntawm cov tshauv calcium hauv zos, cov mis ntawm cov phab ntsa putty, thiab "qhov zoo uas cov neeg siv khoom xav tau". Feem ntau hais lus, ntawm 4 kg thiab 5 kg. Piv txwv li: Beijing phab ntsa putty feem ntau yog 5 kg; Guizhou feem ntau yog 5 kg thaum lub caij ntuj sov thiab 4.5 kg thaum lub caij ntuj no; Yunnan me me, feem ntau yog 3 kg txog 4 kg thiab lwm yam.

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

Feem ntau, cov tshuaj pleev phab ntsa yog 100,000, tab sis cov tshuaj mortar xav tau ntau dua, thiab nws siv sijhawm 150,000 los ua haujlwm. Ntxiv mus, lub luag haujlwm tseem ceeb tshaj plaws ntawm HPMC yog kev khaws dej, ua raws li kev ua kom tuab. Hauv cov tshuaj pleev phab ntsa, tsuav yog qhov khaws dej zoo, qhov viscosity qis dua (70-80,000), nws kuj ua tau, ntawm chav kawm, qhov viscosity siab dua, thiab qhov khaws dej zoo dua. Thaum qhov viscosity tshaj 100,000, qhov viscosity tsis muaj txiaj ntsig rau qhov khaws dej.

6. Yuav ua li cas xaiv cov hydroxypropyl methylcellulose (HPMC) kom raug rau ntau lub hom phiaj sib txawv?

Daim ntawv thov ntawm phab ntsa putty: qhov yuav tsum tau qis dua, qhov viscosity yog 100,000, nws txaus, qhov tseem ceeb yog kom cov dej zoo dua. Daim ntawv thov ntawm mortar: qhov yuav tsum tau siab dua, viscosity siab, zoo dua 150,000, daim ntawv thov ntawm kua nplaum: cov khoom yaj sai, viscosity siab.

7. Daim ntawv thov HPMC hauv phab ntsa putty, dab tsi ua rau phab ntsa putty tsim cov npuas?

HPMC ua peb lub luag haujlwm hauv cov khoom siv putty rau phab ntsa: ua kom tuab, khaws dej thiab tsim kho. Tsis txhob koom nrog txhua yam kev ua xua. Vim li cas rau cov npuas:

(1) Muab dej ntau dhau rau hauv.

(2) Cov txheej hauv qab tsis qhuav, thiab lwm txheej yog khawb rau ntawm nws, uas kuj yooj yim ua npuas ncauj.