Kev Tsim Tsev Qib (HPMC) Hydroxypropyl methyl cellulose
Mixed cementitious mortars tau dhau los ua ib feem tseem ceeb ntawm kev lag luam mortar hauv ntiaj teb no thiab ua lub luag haujlwm tseem ceeb vim yog kev lag luam nce qib thiab kev txhawb nqa hauv tebchaws. Hauv kev loj hlob ntawm mortars, cellulose ether yog ib qho tseem ceeb activist.
Ordinary mortar yog kev lag luam xav tau nyob rau hauv uas qib cement me me, tab sis qhov yuav tsum tau ua rau nws cov kev khiav hauj lwm thiab tshuab txau cov khoom tseem siab, yog li cov xuab zeb grading thiab additives tseem ceeb heev. Tsis tas li ntawd, daim ntawv thov kev siv tshuab yuav dhau los ua ib qho kev nyiam ntawm kev tsim cov khoom sib xyaw ua ke, cellulose ether yuav ua rau kev siv tshuab ua tau.
Khoom nta
Ua kom cov dej xav tau.
Kev tuav dej siab, ua kom ntev lub sijhawm ua haujlwm ntawm cov khoom siv, txhim kho kev ua haujlwm, zam qhov tshwm sim ntawm crusting, thiab pab txhim kho lub zog ntawm cov khoom siv.
Txhim kho kev khiav hauj lwm kev ua tau zoo, muab lubrication thiab kev ntxhib los mos zoo nkauj, yog li ntawd cov ntaub ntawv saum npoo yog yooj yim dua los so, yog li kev txhim kho kev tsim kho, thiab txhim kho kev tiv thaiv kom tawg ntawm putty.
Txhim kho homogeneity, thiab txhim kho ntsug ntws tsis kam.
HPMC rau pobzeb nplaum
Ceramic vuas muaj kev ua haujlwm siab thiab ua haujlwm zoo heev thaum muab tso rau ntawm ntau yam substrates. Skid tsis kam thiab lub sijhawm qhib zoo dua yog tus yuam sij rau kev ua kom zoo dua.
HPMC rau phab ntsa putty
HPMC yog non-ionic cellulose ether ua los ntawm natural paj rwb fiber nyob rau hauv series ntawm tshuaj ua. Nws tsis muaj ntxhiab, tsis qab thiab tsis muaj tshuaj lom cov hmoov dawb, tuaj yeem yaj hauv cov dej ib txwm muaj los tsim cov kua nplaum pob tshab nrog cov khoom ntawm thickening, khi, dispersing, emulsifying, zaj duab xis txheej, tshem tawm, absorbing, gelling, dej tuav thiab kev tiv thaiv colloid.
cellulose ethers muab cov khoom zoo hauv qab no rau mortar:
Optimized wetting peev xwm rau lub substrate
Ib Advanced dej tuav peev xwm
Ib qho zoo txau thiab siv dej ua haujlwm
IB Txhim kho cov cement hydration los ntawm kev sib khi lub zog
Product Description
1) Cov tsos mob: HPMC yog ib qho nonionic cellulose ether, dawb greyish-dawb hmoov los yog granule, tsw thiab tsw, soluble nyob rau hauv dej txias, glacial acetic acid, ethanol, methanol thiab propylene glycol, me ntsis soluble nyob rau hauv acetone nyob ntawm seb lub degree ntawm hloov, xyaum insoluble hauv dej kub, ethylene glycol thiab toluene. HPMC yog yaj nyob rau hauv ib tug sib tov ntawm 10% methanol thiab 90% methylene chloride los tsim colloidal daws.
2) Cov kev daws teeb meem ntawm HPMC muaj cov dej num saum npoo av, siab pob tshab, thiab kev ua haujlwm ruaj khov. Thaum rhuab ntawm tej qhov kub thiab txias, cov tshuaj yuav pos huab los yog tsim flocculent gel. Txawm li cas los xij, cov tshuaj yuav pom tseeb dua tom qab txias. Ntau hom HPMC muaj qhov sib txawv gelation kub. Lub solubility sib txawv nrog cov viscosity. Qhov qis dua qhov viscosity, qhov ntau dua solubility nws muaj. Cov hom HPMC sib txawv ntawm qee yam khoom thiab lawv cov solubility hauv dej tsis cuam tshuam los ntawm pH.
3) Qhov ntau thiab tsawg: 100% dhau tus nqi hauv 80 mesh.
4) Pom tseeb ntom: 0.25-0.70 g / mL (feem ntau yog li 0.5 g / mL), tshwj xeeb ceev 1.26-1.31mL.
5) Xim hloov kub: 190-200 ° C; Carbonization kub: 280-300 ° C.
6) Nto nro: 42-56 dyn / cm (2% aqueous tov).
7) Cov ntsiab lus methoxy ntau dua hauv HPMC, qis dua gelation kub, thiab ntau dua solubility hauv dej thiab dej ua haujlwm.
8) HPMC muaj lwm yam ntxwv, piv txwv li, thickening khoom, pH stability, tuav dej, zoo heev film-forming khoom, zoo disperse thiab adhesion muaj peev xwm.
Cov lus qhia ntxaws
| Yam khoom | Index |
| Cov ntsiab lus ntawm Methoxyl (%) | 24.0-30.0 Nws |
| Cov ntsiab lus ntawm Hydroxypropyl (%) | 7.0-12.0 Nws |
| Kub ntawm gelation | 54 ℃ -90 ℃ |
| Moisture | 5% max |
| Tshauv | 5% max |
| Tus nqi PH | 6-8 |
| Qhov tshwm sim | Dawb hmoov |
| Kev qoj ib ce | 80-100 mesh |
| viscosity | 100 txog 200000 nws tuaj yeem kho tau |
