Hydroxypropyl methyl cellulose thiab cement ratio

HPMC Hydroxypropyl methyl cellulose thiab cement piv yog dab tsi?

Cov khoom siv hluav taws xob tsis muaj dej tsis zoo, nws cov yam ntxwv yog nyob ntawm qhov hnyav ntawm cov khoom siv hauv qab no: Pob zeb 30-340, engineering siv khib nyiab cib hmoov 40-50, lignin fiber 20-24, calcium formate 4-6,hydroxypropyl methyl cellulose7-9, silicon carbide hmoov 40-45, calcium hydroxide hmoov 10-20, xim av corundum hmoov 10-12, qhuav lub nroog loj silt hmoov 30-35, Datong nroog av 40-45, txhuas sulfate 4-6, carboxymethyl Base starch 20-24, hloov cov ntaub ntawv nanotechnology carbon hmoov 4-6, dej 600-650;Cov khoom siv hluav taws xob tsis muaj dej tsis zoo ntawm cov khoom no muaj cov rwb thaiv tsev zoo, hluav taws kub zoo, muaj zog sib txuas nrog phab ntsa, compressive zog, tensile kev ua tau zoo, zoo aging kuj, zoo ib puag ncig tiv thaiv, zoo heev ya raws, tawg tsis kam, tiv thaiv ntog.Niaj hnub no peb yuav tham txog cov viscosity ntawm hydroxypropyl methyl cellulose aqueous kua yog tag nrho nyob rau hauv dab tsi yam?Cia peb kawm tiag.

1. Tus txheeb ze molecular hnyav, kub ntawm aqueous tov, txiav tus nqi thiab kev sim ntawm cellulose ether;2. Qhov siab dua qhov hloov pauv iav, qhov hnyav dua qhov txheeb ze molecular, qhov viscosity ntawm cov tshuaj yog ib txwm siab dua;3. Qhov siab dua cov ntsiab lus ntawm cellulose ether, qhov siab dua qhov viscosity ntawm cov tshuaj, yog li nyob rau hauv kev siv ntawm daim ntawv thov peb yuav tsum tau xyuam xim rau qhov tsim nyog tus nqi ntawm incorporation, tiv thaiv incorporation siab dhau lawm, thiab ncaj qha cuam tshuam cov yam ntxwv ntawm cement mortar. thiab cement pob zeb;4. Zoo li feem ntau ntawm cov tshuaj, cov viscosity kuj yuav txo nrog qhov nce ntawm qhov kub thiab txias, ntxiv rau cov ntsiab lus ntawm cellulose ether ntau dua, qhov kub thiab txias ntau dua;Tsis tas li ntawd, qhov tseeb thickening nyhuv kuj txawv raws li tus nqi ntawm cov dej siv rau epoxy cement.

Hydroxypropyl methyl cellulose aqueous kua viscosity kuj tseem tuaj yeem ua qhov txuas tseem ceeb rau cov lus pom ntawm cov yam ntxwv ntawm cellulose ether, qhov siab dua qhov viscosity ntawm cov kua dej aqueous, nws cov tuab ntawm epoxy cement cov ntaub ntawv yog, qhov zoo dua, nyob rau sab nraum qab ntawm lub phaj gelling zog, tab sis yog tias cov viscosity loj dhau lawm, yuav ua rau cov epoxy cement raw khoom tam sim ntawd liquidity thiab enforceability.Raws li rau qee qhov nws tus kheej-leveling mortar nrog lub siab fluidity, viscosity ntawm cellulose ether yuav raug teev kom qis dua.

Cellulose ether aqueous kua yog ib lub cev pseudoplastic, peb nyob rau hauv lub tom qab theem ntawm kev tshawb pom ntawm shear tus nqi yog ntau dua, lub viscosity yog me me.

Yog li ntawd, cov ntsiab lus yog: kev sib koom ua ke ntawm cov cement mortar yuav raug txo los ntawm kev quab yuam sab nraud, uas muaj txiaj ntsig zoo rau kev tsim kho engineering tom qab, tab sis cellulose ether aqueous tov nyob rau hauv cov ntaub ntawv ntawm ib tug tsawg concentration tus nqi, yuav tshwm sim cov yam ntxwv ntawm tsis- Newtonian kua, ntawm qhov tsis sib xws, thaum tus nqi concentration yog nce, cov kua dej yuav tshwm sim pseudoplastic kua yam ntxwv.

Kev tuav dej los ntawm hydroxypropyl methyl cellulose yog ib qho ntawm cov khoom tseem ceeb ntawm hydroxypropyl methyl cellulose.Lub evaporation tus nqi ntawm cov dej ntsiab lus nyob rau hauv sib tov mortar thiab plaster raws li cov khoom yog cuam tshuam los ntawm roj kub, kub thiab siab npaum li cas.Yog li ntawd, nyob rau lub caij sib txawv, ntxiv rau hydroxypropyl methyl cellulose tib tus nqi ntawm cov khoom siv dej muaj qee qhov sib txawv.

Feem ntau, qhov siab dua qhov viscosity ntawm hydroxypropyl methyl cellulose yog, qhov zoo dua qhov tseeb ntawm cov dej tuav yuav zoo, tab sis qhov kev puas tsuaj ntawm viscosity rau dej tuav yuav raug txo tom qab qhov viscosity siab tshaj 100,000 Mpa.s.Thaum cov viscosity ntawm HYDROXYpropyl methyl cellulose tshaj 100,000, cov dej tuav tus nqi tuaj yeem txhim kho tau zoo los ntawm kev nce cov hydroxypropyl methyl cellulose.

Hauv cov txheej txheem kev tsim kho kom ntxaws, cov dej tuav cov nyhuv ntawm slurry tuaj yeem hloov kho los ntawm kev kho tus nqi ntawm hydroxypropyl methyl cellulose.Hydroxypropyl methyl cellulose series cov khoom lag luam tuaj yeem daws qhov teeb meem ntawm cov dej tuav hauv qhov kub thiab txias.Nyob rau hauv lub caij kub kub tsis tu ncua, tshwj xeeb tshaj yog nyob rau hauv kub thiab tho txawv qhov chaw thiab kev tsim kho ntawm chromatography nyob rau sab hnub tuaj, siab zoo HYDROXYpropyl methyl cellulose yuav tsum tau tsim cov dej tuav ntawm slurry.

High quality ntawm hydroxypropyl methyl cellulose, nws muaj ib tug zoo tshuav nyiaj li cas, nws tertiary butyl thiab hydroxypropyl oxygen ua hauj lwm pab pawg nyob rau hauv lub fiber molecular saw qauv sib koom faib, nws muaj peev xwm tsim methyl aldehyde pab pawg neeg thiab cov pa oxygen, thiab dej zoo ntawm daim ntawv covalent bonds tau , ua ke dej thiab dej ntawm cov dispersion, ces zoo tswj kev kub ntxhov huab cua tshwm sim los ntawm dej evaporation, siab dej tuav.

Qhov zoo ntawm hydroxypropyl methyl cellulose tuaj yeem haum cov av xoob thiab kev lag luam hauv cov khoom sib xyaw mortar thiab plaster, thiab tag nrho cov khoom cyst, damp, txias, thiab tsim ib txheej ntawm zaj duab xis, noo noo nyob rau hauv nruab nrab mus sij hawm ntev maj mam tso tawm los ntawm lub hauv paus, nrog rau cov pib ntawm cov organic compound admixture ntawm hydration cov tshuaj tiv thaiv, ces lav lub coherence ntawm raw cov ntaub ntawv compressive zog thiab tensile zog.Nyob rau hauv cov txheej txheem kev tsim kho kub kub lub caij ntuj sov, yog li ntawd, kom ncav cuag cov nyhuv dej, yuav tsum ua raws li daim ntawv qhia rau qee qhov nyiaj thiab qhov zoo ntawm hydroxypropyl methyl cellulose cov khoom, txwv tsis pub, yuav qhia qhov tho txawv sai heev thiab ua rau cov dej tsis txaus, txo cov compressive. lub zog, sib cais, popped qhov zoo xws li metope npliag nruas thiab tsis ntseeg, kuj ua ke nrog cov neeg ua hauj lwm kev tsim kho nyuaj coefficient.Raws li qhov kub thiab txias, tus nqi ntawm hydroxypropyl methyl cellulose tuaj yeem txo qis thiab tib cov dej tuav cov nyhuv tuaj yeem ua tiav.

Yog tias tsis ntxiv cellulose ether, cov chromatography ntawm cov cement mortar tshiab yuav sai sai qhuav, ua cov pob zeb tsis tuaj yeem hydrated nyob rau hauv ib txoj kev, ua rau cov cement mortar tsis tuaj yeem nyuaj primed thiab tau zoo adhesion.Nyob rau tib lub sijhawm, qhov sib ntxiv ntawm cellulose ether ua rau cov cement mortar muaj qhov zoo ductility thiab yooj, thiab txhim kho cov kev sib txuas ntawm lub zog ntawm cov cement mortar.

1, hydroxypropyl methyl cellulose particle loj

Qhov loj me me ntawm cellulose ether ua rau nws cov solubility.Lub finer cellulose ether yog, qhov ceev nws decomposition tus nqi nyob rau hauv dej thiab siab dua nws cov dej-retention yam ntxwv.Yog li ntawd, qhov loj me me ntawm cellulose ether yuav tsum tau muab tso rau hauv kev tshawb xyuas ntawm ib qho ntawm nws cov yam ntxwv.Feem ntau, cellulose ether particle loj ntawm 80 mesh raws li.

2, hydroxypropyl methyl cellulose qhuav tsis muaj qhov nqus nqus

Qhuav manic tsis muaj lub ntiajteb txawj nqus tus nqi, hais txog ib tug tej yam kub ntawm qhuav manic cellulose ether, qhov poob ntawm cov tshuaj zoo accounted rau tus thawj qauv zoo feem pua ​​ntawm cov muaj pes tsawg leeg.Rau qee qhov zoo ntawm cellulose ether nyob rau hauv qhuav yam tsis muaj lub ntiajteb txawj nqus tus nqi siab dhau lawm, yuav txo cov khoom siv hauv cellulose ether, ua rau muaj kev phom sij rau kev siv cov tuam txhab downstream, tab sis kuj txhim kho cov nqi yuav khoom.Feem ntau cov qhuav cellulose ether tsis muaj lub ntiajteb txawj nqus yuav tsum tsis pub tshaj 5.0%.

3, hydroxypropyl methyl cellulose potassium thiocyanate tshauv

Rau qee qhov zoo ntawm cellulose ether nyob rau hauv cov hmoov tshauv yog siab dhau lawm, yuav txo cov cellulose ether nyob rau hauv cov khoom uas cuam tshuam, ua rau muaj kev cuam tshuam tiag tiag ntawm kev siv cov tuam txhab downstream, cellulose ether potassium thiocyanate tshauv cov ntsiab lus tseem ceeb ntawm nws tus kheej cov yam ntxwv. tus nqi ntsuas.

4, hydroxypropyl methyl cellulose viscosity

Hydroxypropyl methyl cellulose dej tuav thiab thickening nyhuv yog tus yuam sij rau ntxiv cement mortar cellulose ether nyob rau hauv nws tus kheej viscosity thiab incorporation.

5, hydroxypropyl methyl cellulose PH nqi

Lub viscosity ntawm hydroxypropyl methyl cellulose cov khoom txo qis ntawm qhov kub thiab txias dua los yog tom qab khaws cia ntev, tshwj xeeb tshaj yog rau cov khoom muaj viscosity siab, yog li tus nqi pH yuav tsum raug txwv.Nws feem ntau tau teev tseg tias PH tus nqi qeb ntawm cellulose ether yuav tsum tau ua raws li 5-9.

6. Kev xa tawm ntawm hydroxypropyl methyl cellulose

Qhov zoo thiab qhov tsis zoo ntawm kev xa tawm ntawm hydroxypropyl methyl cellulose tuaj yeem cuam tshuam ncaj qha rau cov txiaj ntsig ntawm nws cov khoom siv hauv tsev.Lub hauv paus tseem ceeb uas cuam tshuam rau kev xa tawm ntawm cellulose ether yog1) qhov zoo ntawm cov khoom siv raw;(2) qhov tshwm sim ntawm deashing;(3) Kev npaj cov cuab yeej technology;(4) organic solvent npaj;(5) Cov nyhuv tiag tiag ntawm zhonghe.

Raws li cov txiaj ntsig ntawm daim ntawv thov, kev xa ntawm cellulose ether yuav tsum tsis pub tsawg dua 80%.

7, hydroxypropyl methyl cellulose xav tias kub

Hydroxypropyl methyl cellulose nyob rau hauv cov cement Cheebtsam yog tus yuam sij rau ua kom cov nplaum, viscosity thiab dej tuav tus neeg sawv cev, yog li viscosity thiab gel kub yog qhov tseem ceeb Performance index ntawm hydroxypropyl methyl cellulose.Qhov kub yog siv los txiav txim rau hom thiab specification ntawm cellulose ether, thiab cov degree ntawm hloov cellulose ether muaj feem xyuam.

8. Tsis tas li ntawd, ntsev thiab cov seem yuav ua rau qhov kub thiab txias ntawm cov kua nplaum.Thaum qhov kub ntawm cov tshuaj aqueous nce, cov fiber ntau polymer maj mam tsis muaj dej, thiab cov viscosity ntawm cov kua dej txo qis.Thaum cov nplaum nplaum mus txog, cov polymer yog qhuav tag thiab cov nplaum yog tsim.Yog li ntawd, kev khiav hauj lwm kub ntawm cov neeg cement feem ntau yog qis dua qhov qub kua nplaum kub.Raws li tus qauv no, qhov kub thiab txias qis dua, qhov viscosity siab dua, thiab qhov tseem ceeb tshaj qhov cuam tshuam ntawm viscosification thiab dej tuav.