1. cellulose ether - cellulose ether ua ntej
Cellulose etheryog cov polysaccharide muaj ntau tshaj plaws hauv ntiaj teb niaj hnub no. Cov khoom tseem ceeb ntawm cov cellulose ntuj yog paj rwb, ntoo, cov nroj tsuag hauv dej, nyom thiab lwm yam. Paj rwb muaj 92-95% cellulose; Paj rwb muaj li 80% cellulose; Ntoo muaj li 50% cellulose.
2, cov qauv cellulose ether
Cellulose ether yog ib qho polysaccharide uas muaj ntau txhiab tus glucose units hauv molecule, cov mis tshuaj yog (C6H10O5) N. Pawg D-glucose yog khi los ntawm β - 1,4 glucoside bonds.
Cov teeb meem feem ntau thiab cov laj thawj tseem ceeb ntawm cov dej tsis kam putty rau sab hauv phab ntsa
Cov txheej txheem daws teeb meem feem ntau
Neutral putty:
Depowder: cov khoom siv cementitious tsis txaus, cellulose ether dej khaws cia tsis txaus, cov calcium uas muaj calcium hnyav tsawg.
Kev ua tau zoo ntawm kev tsim kho: txhim kho los ntawm bentonite thiab starch ether.
Nruas khoob; Thiab phab ntsa lo vim tsis txaus.
Layering: kev ua tiav ntawm interface.
Lub zog: Kuj tseem tuaj yeem hloov kho los ntawm kev muab cov hmoov calcium tso rau hauv.
Cov tshuaj calcium potassium:
Cov teeb meem yog lub nruas khoob, depowder daj, kev tsim kho tsis zoo, depowder, stratification, tawg, tom qab thickening;
Depowder: cov khoom siv cementitious tsis txaus, tsis txaus cellulose dej khaws cia lossis tsis txaus ntxiv, txiv qaub calcium tsis huv.
Kev ua haujlwm tsis zoo ntawm kev tsim kho: bentonite thiab starch ether kom zoo dua.
Lub nruas khoob; Thiab tsis txaus nplaum phab ntsa los ntawm kev ntxiv cov hmoov latex kom tsim nyog.
Layering: kev ua tiav ntawm interface.
Daj: kev xaiv tsis raug ntawm cellulose ether.
Kev tawg: kev tawg hauv paus lossis lub zog tawg nyuaj dhau, txheej tuab dhau.
Tom qab ua kom tuab: qhov nqus dej calcium hnyav sib txawv, nws raug pom zoo kom xaiv qhov nqus dej xoom lossis hmoov calcium hnyav tsawg heev; Grey calcium muaj GaO tsis tau zom.
Cov cement-based putty:
Teeb meem rau lub nruas khoob, kev tsim kho tsis zoo, depowder, delamination, tawg, tsis txaus dej tsis kam, cuav coagulation;
Depowder: cov khoom siv cementitious tsis txaus, cellulose ether tsis txaus khaws dej lossis ntxiv tsis txaus.
Kev ua haujlwm tsis zoo ntawm kev tsim kho: bentonite thiab starch ether kom zoo dua.
Lub nruas khoob: thiab phab ntsa lo rau vim tsis txaus, ntxiv cov hmoov latex tsim nyog.
Layering: kev ua tiav ntawm interface.
Daj: Xaiv cov cellulose tsis raug.
Tsis txaus tiv taus dej: tsis txaus hmoov latex thiab tsis txaus cov ntaub ntawv cementitious.
Kev tawg: kev tawg hauv paus lossis kev tawg muaj zog heev, txheej txheej tuab dhau, nrog cov putty los sau qhov.
Kev coagulation cuav: sodium gluconate tuaj yeem ntxiv rau kom ntev lub sijhawm ua haujlwm.
Lub sijhawm tshaj tawm: Plaub Hlis-25-2024