Yintoni ukugcinwa kwamanzi kwi-methyl cellulose ether (MC)

Yintoni ukugcinwa kwamanzi kwi-methyl cellulose ether (MC)

Impendulo: Inqanaba lokugcinwa kwamanzi sesinye sezibonakaliso ezibalulekileyo zokulinganisa umgangatho we-methyl cellulose ether, ngokukodwa kulwakhiwo oluncinci lwe-cement-based and gypsum-based mortar. Ukugcinwa kwamanzi okuphuculweyo kunokuthintela ngokufanelekileyo into yokulahleka kwamandla kunye nokuqhekeka okubangelwa ukomisa ngokugqithiseleyo kunye nokungonelanga kwe-hydration. Ukugcinwa kwamanzi okugqwesileyo kwe-methyl cellulose ether phantsi kweemeko eziphezulu zokushisa kungenye yezibonakaliso ezibalulekileyo zokwahlula ukusebenza kwe-methyl cellulose ether. Phantsi kweemeko eziqhelekileyo, i-methyl cellulose ethers ezininzi eziqhelekileyo zinciphisa ukugcinwa kwazo kwamanzi njengoko ubushushu bunyuka. Xa iqondo lokushisa liphakama ukuya kuma-40 ° C, ukugcinwa kwamanzi kwi-methyl cellulose ethers eqhelekileyo kuncitshiswe kakhulu, okubaluleke kakhulu kwiindawo ezishushu nezomileyo Kwaye ukwakhiwa kwe-thin-layer kwicala elinelanga ehlobo kuya kuba nefuthe elibi. Nangona kunjalo, ukwenza ukungabikho kokugcinwa kwamanzi ngokusebenzisa i-dosage ephezulu kuya kubangela i-viscosity ephezulu yezinto ngenxa ye-dosage ephezulu, eya kubangela ukuphazamiseka ekwakhiweni.

Ukugcinwa kwamanzi kubaluleke kakhulu ukunyusa inkqubo yokuqina kweenkqubo ze-mineral gelling. Ngaphantsi kwesenzo se-cellulose ether, amanzi akhululwa ngokuthe ngcembe kwinqanaba lesiseko okanye emoyeni ixesha elide, ngaloo ndlela eqinisekisa ukuba izinto ze-cementitious (samente okanye i-gypsum) zinexesha elide elaneleyo lokusebenzisana namanzi kwaye ngokuthe ngcembe lukhuni.

Ziziphi iimpawu ze-methyl cellulose ether?

Impendulo: Kuphela inani elincinci le-methyl cellulose ether yongezwa, kwaye ukusebenza okuthe ngqo kwe-gypsum mortar kuya kuphuculwa kakhulu.

(1) Ukulungelelanisa ukuhambelana

I-Methyl cellulose ether isetyenziswa njenge-thickener ukulungelelanisa ukuhambelana kwenkqubo.

(2) Ukulungelelanisa imfuneko yamanzi

Kwinkqubo yodaka lwe-gypsum, imfuno yamanzi iyipharamitha ebalulekileyo. Imfuneko yamanzi esisiseko, kunye nokukhutshwa kodaka oluhambelanayo, kuxhomekeke ekuqulunqweni kwe-gypsum mortar, oko kukuthi ubungakanani be-limestone, i-perlite, njl. Ukufakwa kwe-methyl cellulose ether kunokulungelelanisa ngokufanelekileyo imfuno yamanzi kunye nemveliso yodaka lwe-gypsum mortar.

(3) Ukugcinwa kwamanzi

Ukugcinwa kwamanzi kwe-methyl cellulose ether, umntu unokulungelelanisa ixesha lokuvula kunye nenkqubo ye-coagulation ye-gypsum mortar system, ukwenzela ukulungelelanisa ixesha lokusebenza kwenkqubo; ezimbini i-methyl cellulose ether inokukhulula ngokuthe ngcembe amanzi kwixesha elide Ikhono lokuqinisekisa ngokufanelekileyo ukudibanisa phakathi kwemveliso kunye ne-substrate.

(4) Ukulungelelanisa i-rheology

Ukongezwa kwe-methyl cellulose ether kunokulungelelanisa ngokufanelekileyo i-rheology ye-plastering system ye-gypsum, ngaloo ndlela iphucula ukusebenza komsebenzi: i-gypsum mortar inokusebenza okungcono, ukusebenza okungcono kwe-anti-sag, akukho ukunamathela kunye nezixhobo zokwakha kunye nokusebenza okuphezulu kwe-pulping, njl.

Unokukhetha njani i-ether ye-methyl cellulose efanelekileyo?

Impendulo: Iimveliso ze-Methyl cellulose ether zineempawu ezahlukeneyo ngokwendlela yazo ye-etherification, i-degree of etherification, i-viscosity yesisombululo samanzi, iimpawu ezibonakalayo ezifana ne-particle fineness, iimpawu ze-solubility kunye neendlela zokuguqulwa. Ukufumana umphumo wokusetyenziswa kakuhle, kuyimfuneko ukukhetha uphawu oluchanekileyo lwe-cellulose ether kwiinkalo ezahlukeneyo zesicelo, kwaye uphawu olukhethiweyo lwe-methyl cellulose ether kufuneka luhambelane nenkqubo yodaka esetyenzisiweyo.

I-Methyl cellulose ethers ziyafumaneka kwii-viscosities ezahlukeneyo ukuze zihambelane neemfuno ezahlukeneyo. I-Methyl cellulose ether inokudlala indima kuphela emva kokuchithwa, kwaye izinga lokuchithwa kwayo kufuneka lilungelelaniswe kwintsimi yesicelo kunye nenkqubo yokwakha. Imveliso yomgubo ocolekileyo ifanelekile kwiinkqubo zodaka ezixutywe ngoomileyo (ezifana ne-spray plastering plastering). Amasuntswana amahle kakhulu e-methyl cellulose ether anokuqinisekisa ukuchithwa ngokukhawuleza, ukwenzela ukuba ukusebenza kwayo okugqwesileyo kunokwenziwa ngokufanelekileyo ngexesha elifutshane emva kokubunjwa kodaka olumanzi. Yandisa ukungaguquguquki kunye nokugcinwa kwamanzi kwidaka ngexesha elifutshane kakhulu. Olu phawu lufanelekile ngokukodwa ukwakhiwa komatshini, kuba ngokuqhelekileyo, ixesha lokuxuba amanzi kunye nodaka olumileyo lufutshane kakhulu ngexesha lokwakhiwa komatshini.

Yintoni ukugcinwa kwamanzi kwi-methyl cellulose ether?

Impendulo: Eyona ntsebenzo ibalulekileyo yamabanga ahlukeneyo e-methyl cellulose ether (MC) ngamandla abo okugcina amanzi kwiinkqubo zezinto zokwakha. Ukuze ufumane ukusebenza kakuhle, kuyimfuneko ukugcina ukufuma okwaneleyo kwidaka ixesha elide. Ngenxa yokuba amanzi esebenza njengesithambiso kunye nesinyibilikisi phakathi kwezinto ezingaphiliyo, iimbumba ezinomaleko obhityileyo zinokufakwa amakhadi kunye nodaka olutyatyekiweyo lungasasazwa ngeetroli. Iindonga ezifunxayo okanye iithayile akufuneki ukuba zifakwe amanzi kwangaphambili emva kokusebenzisa i-cellulose ether-added mortar. Ke i-MC inokuzisa iziphumo zokwakha ezikhawulezayo nezinoqoqosho.

Ukuseta, izinto zesamente ezifana negypsum kufuneka zifakwe emanzini. Isixa esifanelekileyo se-MC sinokugcina ukufuma kwi-mortar ixesha elide elaneleyo, ukwenzela ukuba ukusetwa kunye nenkqubo yokuqina ingaqhubeka. Isixa se-MC esifunekayo ukufumana umthamo owaneleyo wokugcina amanzi kuxhomekeke ekufunjweni kwesiseko, ukubunjwa kodaka, ubukhulu bodaka lodaka, imfuno yamanzi yodaka, kunye nexesha lokumisela izinto zesamente.

Okukhona ubungakanani bamasuntswana eMC, kokukhona udaka lujiya ngokukhawuleza.