Cellulose ether yog ib hom kev ua lag luam hauv tsev, siv los txhim kho kev tsim kho cov khoom siv thiab cov khoom siv tshuab ntawm cug. Fineness yog ib qho tseem ceeb ntawm cov yam tseem ceeb ntawm cellulose ether, uas yog hais txog nws qhov kev faib tawm loj.
Cov yam ntxwv thiab kev siv ntawm cellulose ether
Cellulose ether tsuas yog suav nrog hydroxypropylulose (HECMC), etc), thiab lwm yam hauv kev tsim lub vaj tshuaj khib xws li:
Dej khaws cia: los ntawm kev txo cov dej evaping, lub sij hawm ua kom lub sij hawm hloov kho Mrology, thiab tshuaj pov tseg lub zog.
Thickening: nce viscosity ntawm cug thiab txhim kho kev tsim kho.
Txhim kho cov kab nrib pleb: cov khoom siv hauv cellulose pab tswj lub shrinkage ntawm cement, yog li txo qhov kev sib xyaw ua kab cug
Lub fineness ntawm cellulose cuam tshuam nws dispersibility, solubility thiab effecticiencing rau tag nrho cov kev ua tau zoo ntawm cug.
Cov nyhuv ntawm cellulose ether fineness ntawm kab tshuaj pov tseg tuaj yeem txheeb xyuas los ntawm cov hauv qab no:
1. Kev tshem tawm thiab Dispersibility
Qhov kev sib cais ntawm cov cellulose ether hauv dej yog ze rau nws cov txiaj ntsig. Cellulose etherles nrog zoo dua zoo kawg nkaus uas tau yooj yim tshaj tawm hauv dej, yog li ua kom muaj kev sib cais zuj zus. Cov kev faib tawm no tuaj yeem ua kom dej cug tas nrho, txhawb txoj kev hloov pauv ntawm kev ua kom muaj zog ntawm cov txiv neej ua kom muaj zog ntawm cug.
2. Dej Tuav Sij Hawm
Qhov zoo ntawm cellulose ether cuam tshuam nws cov dej khaws cia ua kev ua haujlwm. Cellulose etherles nrog cov txiaj ntsig siab dua muab cov cheeb tsam loj dua, yog tsim cov qauv dej ntau dua hauv cov microporous nyob rau hauv lub tshuaj khib. Cov micropores no tuaj yeem khaws tau ntau dua dej, ua kom lub sijhawm ua kom muaj lub sijhawm ua haujlwm ntawm cov dej xhia ntawm lub zog.
3. Interface Bonding
Vim lawv qhov kev ua tsis tau zoo, cellulose ethtital nrog qhov zoo dua tuaj yeem ua cov txheej txheem sib xyaw ntawm cov tshuaj khib thiab ua kom zoo nkauj, thiab txhim kho kev sib xyaw ntawm cug. Cov nyhwv no pab txoj kev tshuaj khib kom muaj cov roj hmab zoo nyob rau hauv thaum ntxov, txo qhov kev tshwm sim ntawm shrinkage tawg, thiab yog li txhim kho lub zog tag nrho.
4. Kev txhawb nqa ntawm Caas Court
Thaum lub sij hawm casas co tsib txheej txheem, kev tsim cov khoom ntawm cov tshuaj hydration yuav tsum muaj qee qhov dej. Cellulose ether nrog zoo dua fineness tuaj yeem tsim cov teeb meem hydration hydration, kom ua kom tiav qhov kev nce qib ntawm cov dej qias neeg, thiab yog li txhim kho lub zog ntawm cug.
Kev kawm sim thiab cov txiaj ntsig txiaj ntsig
Txhawm rau kom pom tseeb cov nyhuv ntawm cellulose ether fineness ntawm cellule ntawm cellule lub zog, nws cov khoom siv kho tshuab cug nyob rau hauv cov sib txawv.
Kev tsim qauv tsim
Kev sim feem ntau siv cellulose cellulose cov qauv ntawm kev sib txawv thiab ntxiv rau lawv kom xis ntshai. Los ntawm kev tswj hwm lwm yam hloov pauv (xws li dej-xiss piv, sib xyaw ua ke, sib xyaw ntawm cellulose ether yog hloov. Cov kev ntsuas ua kom muaj zog, suav nrog lub zog compression thiab hloov lub zog, yog tom qab ntawd nqa tawm.
Sim cov txiaj ntsig feem ntau pom:
Cellulose ether Cov qauv kuaj nrog qhov zoo dua tuaj yeem txhim kho lub zog compressive thiab FLEXURAL lub zog ntawm cov theem thaum ntxov (xws li 3 hnub thiab 7 hnub).
Nrog txuas ntxiv ntawm lub sijhawm kho (xws li 28 hnub), cellulose ether nrog kev khaws dej siab dua thiab koom ua ke, qhia lub zog loj hlob zoo.
Piv txwv li, hauv kev sim, lub zog compressive ntawm cellulose muaj cov neeg muaj kev hais nrog ua kom zoo ntawm 80 mesh, 100 mpa, thiab 30 MPa, feem ntau. Qhov no qhia tau hais tias qhov siab dua ntawm kev sib xyaw ntawm cellulose ether, muaj ntau dua cov colter compression zog ntawm cug.
Cov tswv yim thov ntawm cellulose ether fineness zoo
1. Kho raws li kev tsim kho ib puag ncig
Thaum tsim nyob rau hauv ib puag ncig qhuav lossis hauv qab cov kev mob siab, cellulose ether nrog kev txhim kho cov tshuaj khib thiab txo lub zog kom ua los ntawm dej evaporation.
2. Siv nrog lwm cov khoom sib ntxiv
Cellulose ether nrog qhov sib xyaw ntau dua tuaj yeem siv nrog lwm cov neeg ua kom muaj kev sib ntxiv (xws li cov dej ntws ntxiv (xws li ua kom zoo dua cov tshuaj cug. Piv txwv li, kev siv cov dej reducers tuaj yeem txo cov dej collection thiab nce ntom ntom tshuaj cug, thaum cellulose ether muab dej ua kom muaj zog thiab ntxiv dag zog. Kev sib xyaw ntawm ob tau txhim kho lub zog ntawm cug.
3. Kev ua kom zoo ntawm kev tsim kho cov txheej txheem
Thaum lub sij hawm tsim qauv, nws yog ib qho tsim nyog los xyuas kom meej tias lub cellulose ether yog tag nrho cov thiab dispersed. Qhov no tuaj yeem ua tiav los ntawm kev nce lub sijhawm sib xyaw lossis siv cov khoom siv sib xyaw tsim nyog los xyuas kom meej tias cov cellule etherized tag nrho.
Lub ntsej muag ntawm cellulose muaj qhov cuam tshuam tseem ceeb ntawm lub zog ntawm cug. Cellulose ether nrog zoo dua ua tau zoo dua ua si lub luag haujlwm ntawm dej, thiab txhim kho cov khoom interface thaum ntxov thiab lub sijhawm ntev ntawm cug. Hauv kev siv cov kev siv, lub ntsej muag ntawm cellulose yuav tsum tau xaiv thiab siv rau cov kev tsim kho tshwj xeeb thiab txhim kho cov kab cig ua tau zoo thiab txhim kho txoj haujlwm zoo.
Lub Sijhawm Post: Jun-24-2024