Nrog kev nce qib txuas ntxiv ntawm kev lag luam thiab kev txhim kho thev naus laus zis, los ntawm kev ua kom zoo nkauj thiab cov tshuab nqus tshuaj tau tsim kho hauv kuv lub tebchaws tsis ntev los no. Cov neeg kho tshuab txau kab kab vort yog txawv ntawm cug cug, uas yuav tsum muaj dej siab ua tau zoo, tsim nyog cov kua nplua mias thiab qee qhov kev ua tau zoo. Feem ntau, hydroxypropyl methylulose tau ntxiv rau lub cug, ntawm cov twg cellulose ether (HPMC) yog qhov feem ntau siv. Lub zog tseem ceeb ntawm hydroxypropylenose hpmc hauv colp yog: thickening thiab viscosifying, kho rheology, thiab muaj peev xwm ua tau dej zoo heev. Txawm li cas los xij, qhov tsis txaus ntseeg ntawm HPMC tsis tuaj yeem tsis quav ntsej. HPMC muaj cov nyhuv huab cua, uas yuav ua rau muaj kev tsis xws sab hauv thiab hnyav dua cov khoom tshuaj cug. Shandong Chenbang Zoo Tshuaj Lom Co., Ltd. Cov ntsiab lus ntawm Hydroxypicyl Metherylropen lub tshuab tsom iav. Cov.
1. Kuaj
1.1 Cov Khoom Siv Raw
Cement: lag luam muaj p.0 42.5 Maas, nws 28D FLEXURAL thiab compressive ua kom muaj 6.9 thiab 48 thiab 48.2 MPa feem; xuab zeb: Chengde zoo dej xuab zeb, 40-100 Mesh; Cellulose Ether: Ua los ntawm Shandong ChenBang Zoo Chemical Co., Ltd. Hmoov, Nominal Viscosity 40, 100, 150, 200 S; Dej: Cov kais dej huv.
1.2 Txoj Kev Ntsuas
Raws li JGJ / T 105-2011 "kev tsim kho cov kev tsim kho rau cov tshuab txau thiab plastering", sib xyaw ntawm cov kab cug yog 80-120 mm, thiab dej thim rov qab ntau dua 90%. Hauv qhov kev sim no, cov kua qaub sib piv tau teem caij ntawm 1: 5, kev sib xws ether tau muab cov nyiaj sab nraud, thiab cov nyiaj sib xyaw ua ke raws li cov cement. Cov khoom siv ntawm cug xws li ntub dej ntom nti, cov ntsiab lus cua, thiab kev sim ua kom siv tau rau JGJ 70-2009 cov ntsiab lus tseem ceeb ntawm kev sim thiab suav raws li qhov ceev txoj kev. Qhov kev npaj, flexural thiab compressive ua lub zog ntsuas ntawm cov hnoos qeev tau nqa tawm raws li GB / T 17671-199s rau kev sim lub zog ntawm xis mas qauv Sand (ISO Txuj Ci) ". Lub taub ntawm cov kab menyuam tau ntsuas los ntawm mercury porosimetry. Tus qauv ntawm Mercury Portimeter yog autopore 9500, thiab cov ntsuas ntsuas tau 5.5 NM-360 μ6. Tag nrho ntawm 4 cov teeb ntawm kev ntsuam xyuas tau ua tiav. Cov Maas-sand piv yog 1: 5, lub viscosity ntawm HPMC yog 100 PA-S, thiab 0.2%, 0.2% (tus lej yog A, B, C, D feem ntau).
2. Cov Ntsiab Lus thiab Kev Ntsuam Xyuas
2.1 nyhuv ntawm HPMC ntawm cov dej tuav cov nqi khaws cia ntawm xisas cug
Dej khaws cia yog hais txog kev muaj peev xwm ntawm collhu dej. Hauv tshuab tshuaj txau kab kuab, ntxiv cellulose cellulose tuaj yeem tuav dej, txo cov kev xav tau ntawm kev haus dej ntawm cov ntxhib cov ntaub ntawv. Cov nyhuv ntawm HPMC ntawm dej ceev ntawm cug.
Nrog rau kev nce ntawm HPMC cov ntsiab lus, dej khaws cov tshuaj khib nyiab nce maj mam. Qhov nkhaus ntawm hydroxypropyl methylcellulose ether nrog viscosities ntawm 100, 150 thiab 200 Pa.S yog qhov zoo ib yam. Thaum cov ntsiab lus yog 0.05% -0.15%, dej khaws nyiaj khaws cia linearly, thiab thaum cov ntsiab lus yog 0.15%, dej thim rov qab yog ntau dua 93%. ; Thaum tus nqi ntawm cov nqi ntau dua 0.20%, nce zuj zus ntawm dej khaws cia ua tiaj tus neeg, qhia tias HPMC yog ze rau kev ntseeg. Tus nqi nkhaus ntawm tus nqi HPMC nrog Viscosity ntawm 40 Pa.S rau ntawm cov dej khaws cia yog kwv yees li txoj kab ncaj nraim. Thaum tus nqi loj dua 0.15%, dej rov qab ntawm lub tshuaj khib yog qis dua li ntawm peb tus kheej HPMC nrog tib tus nqi viscosity. Nws yog feem ntau ntseeg hais tias cov dej khaws cov me nyuam yaus ether yuav koom nrog cov roj av awb thiab cov pa dej ua rau cov dej haus , yog li ua si cov nyhuv zoo khaws cia; Nws tseem ntseeg tias kev sib cuam tshuam ntawm cov dej lwg me me ether ether macecular charts, li kev txhim kho cov dej khaws cia kom muaj cov cement slurry. Cov dej txig zoo heev tuaj yeem ua kom yooj yim rau caisogeneous, tsis yooj yim cais, thiab tau txais kev sib xyaw ua zoo, thaum txo lub neej ntawm lub tshuaj pov tseg tshuab.
2.2 Cov nyhuv ntawm hydroxypropyl methylcellose HPMC ntawm qhov ceev thiab cua cov ntsiab lus ntawm cortle cug
Thaum tus nqi HPMC yog 0-0.20%, qhov ceev ntawm lub tshuaj khib txo qis ntawm HPMC, txij 2050 kg / m3 txog li 1650kg / m3, uas yog li 20% qis dua; Thaum tus nqi HPMc ntau tshaj 0.20%, qhov ceev tsawg dua. nyob rau hauv. Piv rau 4 hom HPMC nrog cov viscosities sib txawv, ntau dua qhov viscosity, qis dua qhov ceev ntawm lub cug vort; Qhov ceev curves ntawm cov neeg mortars nrog cov viscosities sib xyaw ntawm 150 thiab 200 PAE.S HPMC tseem tshuav ntxiv, qhov ntom tsis tsawg.
Kev hloov pauv ntawm cov duab huab cua ntawm cug yog rov qab rau qhov hloov pauv ntawm kev tshuaj khib. Thaum cov ntsiab lus ntawm hydroxypropyl methylcellose HPMC yog 0-0.20%, nrog rau kev nce HPMC cov ntsiab lus ntawm c kuab taws ntau dua linearly; Cov ntsiab lus ntawm HPMC nce ntau dua tom qab 0.20%, cov pa cov ntsiab lus tsis yooj yim pauv tau, qhia tias huab cua-entraining nyhuv ntawm lub cug yog ze rau kev noj tshuaj. Cov Huab Cua-Entraining HPMC nrog Viscosity ntawm 150 thiab 200 Pa.S yog ntau dua tias HPMC nrog Viscosity ntawm 40 thiab 100 PA.S.
Cov Huab Cua-Entraining nyhuv ntawm cellulose ether yog feem ntau txiav txim los ntawm nws cov qauv molecular. Cellulose ether muaj ob pawg hydrophilic (Hydroxylic pawg (Hydroxylic pawg (Methyl, Nplogteb, Thiab Yog Surfactant. , muaj cov kev ua si saum npoo av, yog li muaj cov nyhuv huab cua. Ntawm ib sab tes, cov roj uas tau coj los ua cov kabmob pob hauv cov kab tshuaj khib, ua kom cov zis ntau dua, uas tau txais txiaj ntsig zoo rau cov chaw tsim khoom. Tab sis ntawm qhov tod tes, huab cua-entraining cov nyhuv nce cov huab cua cov ntsiab lus ntawm lub poros, ua rau muaj kev phom sij ntawm cov khoom siv hluav taws xob. Txawm hais tias HPMC muaj qee cov nyhuv cua-entraining, nws tsis tuaj yeem hloov cov huab cua-entraining tus neeg sawv cev. Tsis tas li ntawd, thaum HPMC thiab Actraining tus neeg sawv cev yog siv tib lub sijhawm, huab cua-Entraining tus neeg sawv cev yuav swb.
2.3 Cov nyhuv ntawm HPMC ntawm cov khoom siv mechanical ntawm xis mas cug
Thaum tus nqi HPMC tsuas yog 0.05%, qhov ntsuas hluav taws xob tsawg, uas yog li 25% muaj zog Hydroxellen tau tsuas yog ncav cuag 65% ntawm cov qauv dawb - 80%. Thaum tus nqi HPMc ntau dhau 0.20%, qhov qis dua nyob rau hauv lub zog yooj yim thiab compressive zog ntawm lub cug tsis pom tseeb. Lub viscosity ntawm HPMC muaj cov nyhuv me me rau ntawm cov khoom siv tshuab ntawm cug. HPMC qhia txog ntau ntawm cov nyhuv huab cua me me, thiab cov cua sib xyaw ua ke ntawm lub porosity sab hauv Lwm qhov laj thawj rau qhov txo qis hauv cov ntsiav tshuaj muaj zog ether, uas ua rau cov dej tsis sib xws, thiab cov dej loj hauv lub zog ntawm qhov kev ntsuas thaiv. Rau kev siv tshuab siv cug, txawm hais tias cellulose cellulose celler tuaj yeem nce cov dej cug, yog li kev sib raug zoo dhau ntawm ob yuav tsum tau hnyav.
Nrog rau kev nce ntawm cov ntsiab lus ntawm hydroxypropylencasy HPMC, folding sib piv ntawm cov tshuaj khib nyiab pom kev nce zuj zus kev nce ntxiv, uas tau ua tiav txoj kev sib raug zoo linear. Qhov no yog vim hais tias cov cellulose ntxiv qhia txog cov pa cug ntau, thiab lub zog compressive ntawm cov tshuaj khib nyiab loj, txawm hais tias lub zog ntawm lub zog yooj yim dua; Tab sis lub cellulose ether tuaj yeem txhim kho qhov hloov kho ntawm lub tshuaj tshuaj khib, nws tau txais txiaj ntsig rau lub zog yooj yim, uas ua rau qhov txo qis. Xav txog kev nkag siab, cov nyhuv ua ke ntawm ob tug ua rau muaj kev nce hauv cov folding ratio.
2.4 Cov nyhuv ntawm HPMC ntawm L L txoj kab uas hla ntawm lub cug
Los ntawm lub pore loj tsav tsheb nkhaus, huab cua loj cov ntaub ntawv thiab ntau yam uas HPMC muaj qhov cuam tshuam ntawm tus qauv Peesases ntawm Cangle Cug:
(1) Tom qab ntxiv HPMC, lub pore loj ntawm cement colf nce siab. Nyob rau ntawm lub pore loj faib curve, thaj tsam ntawm daim duab txav mus rau sab xis, thiab cov nqi pore tau coj mus rau lub ncov siab tshaj. Tom qab ntxiv HPMC, tus nruab nrab ntawm lub cheeb tsam ntawm cov qauv xis nyob nrog cov qauv ntawm 2 xaj yog nce los ntawm qhov ntau dua nrog cov qauv tsis muaj.
(2) Faib cov ntxaij cov laj kab ua plaub hom, yog dab tsi nm), muaj kev phom sij (100-200 nm) thiab muaj ntau yam phom sij (≥200 nm). Nws tuaj yeem pom ntawm rooj 1 uas tus lej ntawm cov qhov tsis muaj teeb meem lossis cov teeb meem muaj teeb meem hpmc, thiab cov qhov phom sij ntau dua yog nce. Qhov ua tsis zoo lossis cov porfle tsawg dua ntawm cov hnoos qeev tsis sib xyaw nrog HPMC yog li 49.4%. Tom qab ntxiv HPMC, cov hws tsis zoo lossis cov hws muaj teeb meem tsawg yog txo qis. Noj cov tshuaj ntau ntawm 0.1% ua piv txwv, cov hws tsis zoo lossis cov paib muaj teeb meem tsawg dua li 45%. %, tus naj npawb ntawm cov teeb meem loj tshaj 10um nce txog li ntawm 9 zaug.
(3) Lub plawv nruab nrab ntawm txoj kab uas hla, feem ntau cov kev hloov pauv ntawm hydroxelles Hydroxellulose Hydroxelly Hydroxellulose Hydroxellel cuam tshuam rau cov kev liam loj. Tab sis rau tag nrho, tus nruab nrab ntawm cov cheeb tsam uas hla nrog HPMC zoo li muab piv nrog cov qauv nyob rau hauv cov qauv, thaum thaj chaw tshwj xeeb tsawg.
Lub Sijhawm Post: Apr-03-2023