Focus on Cellulose ethers

Isetshenziselwani i-starch ether?

Isitashi etherisetshenziswa kakhulu ekwakheni udaka, okungase kuthinte ukungaguquguquki kodaka olusekelwe ku-gypsum, usimende kanye nomcako, futhi kushintshe ukwakhiwa nokumelana nodaka lodaka. Ama-ether esitashi ngokuvamile asetshenziswa ngokuhambisana nama-cellulose ether angashintshiwe futhi ashintshiwe. Ilungele kokubili izinhlelo ezingathathi hlangothi kanye ne-alkaline, futhi ihambisana nezithasiselo eziningi ze-gypsum kanye nemikhiqizo kasimende (njengama-surfactants, i-MC, isitashi ne-polyvinyl acetate namanye ama-polymers ancibilika emanzini).

 

Izici ze-starch ether ikakhulukazi zimi kulokhu:

(1) Thuthukisa ukumelana ne-sag;

(2) Ukuthuthukisa ukwakheka;

(3) Isivuno esiphezulu sodaka.

 

Uyini umsebenzi oyinhloko we-starch ether odakeni olomile olususelwa ku-gypsum?

I-starch ether ingenye yezithako eziyinhloko zodaka lwempushana eyomile. Ingahambisana nezinye izithasiselo. Isetshenziswa kabanzi kuma-adhesive tile, ukulungisa ama-mortars, i-gypsum plastering, i-putty yangaphakathi nengaphandle yodonga, i-gypsum-based caulking and filling materials, ama-interface agents, amatshe emasikeni, ifaneleka futhi ifakwe ngesandla noma isifutho nge-cement-based noma i-gypsum. -izinsimbi ezisekelwe. Isebenza kanje:

 

(1) I-starch ether ivamise ukusetshenziswa kuhlanganiswe ne-methyl cellulose ether, okubonisa umphumela omuhle wokusebenzisana phakathi kwakho kokubili. Ukwengeza inani elifanelekile le-starch ether ku-methyl cellulose ether kungathuthukisa ngokuphawulekayo ukumelana nokushelela kanye nokumelana nokushelela kodaka , ngenani lesivuno esiphezulu.

(2) Ukwengeza inani elifanele le-starch ether odakeni oluqukethe i-methyl cellulose ether kungakhuphula ngokuphawulekayo ukuhambisana kodaka, kuthuthukise ukugeleza kwamanzi, futhi kwenze ukwakhiwa kushelele futhi kushelele.

(3) Ukwengeza inani elifanelekile le-starch ether odakeni oluqukethe i-methyl cellulose ether kungakhuphula ukugcinwa kwamanzi odaka futhi kwandise isikhathi sokuvula.

 

Yiziphi izinzuzo zokusetshenziswa nezindlela zokugcina isitashi ether?

Ingasetshenziswa njengengxube yemikhiqizo esekwe usimende, imikhiqizo esekwe ku-gypsum kanye nemikhiqizo ye-ash-calcium.

 

(1) Izinzuzo nezicelo:

a. Inomphumela wokujiya odakeni, ingajiya ngokushesha, futhi ibe nokuthambisa okuhle;

b. Isilinganiso sincane, futhi umthamo ophansi kakhulu ungafinyelela umphumela ophezulu;

c. Thuthukisa ikhono lokulwa nesilayidi lodaka oluboshiwe;

d. ukwandisa isikhathi esivulekile sezinto ezibonakalayo;

e. Thuthukisa ukusebenza kokusebenza kwento futhi wenze ukusebenza kube bushelelezi.

 

(2) Isitoreji:

Umkhiqizo ungenwa kalula ngumswakama futhi kufanele ugcinwe endaweni eyomile nepholile ephaketheni lokuqala. Kungcono ukuyisebenzisa phakathi nezinyanga eziyi-12. (Kunconywa ukuthi kusetshenziswe ngokuhambisana ne-high-viscosity cellulose ether, kanye nesilinganiso esijwayelekile se-cellulose ether ne-starch ether ngu-7:3~8:2)


Isikhathi sokuthumela: Jan-09-2023
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