Cov neeg hais txog cellulose feem ntau siv los ua cov quav hauv gypsum-raws li cov txiv neej mortars los txhim kho ntau yam khoom thiab kev ua tau zoo. Hauv qab no yog qee cov kev siv ntawm cellulose muaj kev ua kom muaj kev coj ua hauv gypsum tshuaj khib:
Dej khaws cia:
Cellulose muaj cov neeg muaj kev hais ua yog hydrophilic polymers, lub ntsiab lus lawv muaj kev sibty rau dej. Thaum ntxiv rau plaster mortars, lawv tau khaws noo thiab tiv thaiv cov sib tov los ntawm ziab nrawm dhau. Qhov no yog qhov tseem ceeb kom ntseeg tau tias lub plaster muaj lub sijhawm txaus rau hydrate kom zoo thiab txhim kho kev ua haujlwm.
Cov txheej txheem thiab yooj yim ntawm daim ntawv thov:
Dej rov qab los ntawm cellulose muaj kev hais ua kom muaj kev txhim kho lub zog ntawm gypsum tshuaj. Tshuaj khib ua tau yooj yim kom sib tov, kis thiab siv, ua kom cov txheej txheem kev tsim kho thiab nrawm dua.
Txo qis shrinkage:
Cellulose hais tau hais pab tswj kom qhuav shrinkage ntawm gypsum mortars. Los ntawm kev tswj cov dej txaus ua kom txaus lub sijhawm thaum lub sijhawm teeb tsa thiab ziab, cellulose lus pab tau txo qis shrinkage backing thiab ua kom cov khoom ruaj khov ntawm cov khoom tiav.
Txhim Kho Adhesion:
Cellulose hais tau hais txog lub adhesion ntawm gypsum tshuaj khib rau ntau yam ntawm substrates, suav nrog phab ntsa thiab qab nthab. Qhov no yog qhov tshwj xeeb tshaj yog nyob rau hauv cov ntawv thov xws li plastering thiab rendering, uas muaj kev sib tw muaj zog yog qhov tseem ceeb rau lub durability thiab ntev ntawm tiav saum npoo.
Tawg tsis kam:
Ntxiv cov cellulose ether tuaj yeem txhim kho qhov tawg tawm ntawm cug. Qhov no yog tau txais txiaj ntsig tshwj xeeb hauv cov cheeb tsam uas muaj kev txav qauv yog nquag tshwm sim lossis qhov chaw tshuaj cug yuav raug kev ntxhov siab, ua ke sib txuas.
Los tiv thaiv: Sag:
Nyob rau hauv cov ntawv thov ntsug, xws li phab ntsa plasters, cellulose hais kom muaj kev hais ua kom tuab, txo sag thiab swb ntawm cov tshuaj khib. Cov yeeb yam no pab tswj cov thickness ntawm ntsug ntawm qhov chaw ntsug, txhim kho cov loog thiab kev ua tau zoo ntawm daim ntawv thov zaum kawg.
Txhim Kho Cohesion:
Cov neeg hais ua neeg hais ua haujlwm cellulose ua rau cohesion ntawm lub cug sib tov, txhim kho nws cov qauv txheej txheem kev ncaj ncees tag nrho. Qhov no yog qhov tseem ceeb hauv kev siv uas lub tshuaj pov tseg yuav tsum tau tiv thaiv sab nraud lossis kev ntxhov siab.
Khov-yaj ruaj khov:
Cellulose hais tias tus neeg muaj peev xwm txhim kho lub khov-yaj ntawm gypsum mortars, ua rau lawv tiv taus kev puas tsuaj rau ib cheeb tsam uas muaj kev hloov pauv kub. Nov yog qhov tseem ceeb tshwj xeeb yog rau kev siv cov kev siv rau huab cua loj.
Ncua Sijhawm:
Siv cov kws kho mob cellulose tuaj yeem txuas lub sijhawm plaster cug, tso cai ntau dua yooj yim hauv kev thov thiab xov. Qhov no yog qhov tshwj xeeb tshaj yog nyob hauv cov xwm txheej uas yuav tsum tau ua haujlwm ntev dua.
Txhim kho rheological cov khoom:
Cov neeg hais ua neeg hais ua haujlwm cellulose pab txhawb rau cov khoom siv ntawm lub tshuaj khib, cuam tshuam nws cov yam ntxwv txaus thiab deformation. Qhov no yuav pab kom ua tiav qhov yuav tsum ua ntu zus thiab kev thov ua tiav.
Nws yog ib qho tseem ceeb kom nco ntsoov tias hom tshwj xeeb thiab noj tshuaj ether siv thiab cov qauv ntawm cov tshuaj khib nyiab etulation yuav tsum tau ua tib zoo txiav txim siab ua tiav cov ntaub ntawv muab. Cov khoom lag luam nquag nquag ua kev sim thiab ua kom zoo dua los txiav txim siab cov ntsiab lus ether ntau tshaj plaws rau lawv cov khoom lag luam thiab npaj siv.
Lub Sijhawm Post: Nov-24-2023