Isitashi se-ether sisetyenziswa ikakhulu kudaka lolwakhiwo, olunokuthi luchaphazele ukuhambelana kodaka olusekwe kwigypsum, isamente kunye nekalika, kwaye utshintshe ukwakhiwa kunye nokumelana nodaka lodaka. Ii-ethers zesitatshi zidla ngokusetyenziswa kunye ne-ethers ye-cellulose engaguqukiyo kunye ne-modified. Ifanelekile kwiinkqubo zombini ezingathathi hlangothi kunye ne-alkaline, kwaye iyahambelana nezongezo ezininzi kwi-gypsum kunye neemveliso zesamente (njengama-surfactants, i-MC, isitashi kunye ne-polyvinyl acetate kunye nezinye iipolymers ezinyibilikayo emanzini).
Iimpawu ze-starch ether ikakhulu zingezantsi:
(1) Ukuphucula ukuxhathisa kwe-sag;
(2) Ukuphucula indlela yokwakha;
(3) Isivuno esiphezulu sodaka.
Nguwuphi umsebenzi ophambili we-starch ether kwi-gypsum-based dry mortar?
Impendulo: Isitashi se-ether sesinye sezongezo eziphambili zodaka lomgubo owomileyo. Iyakwazi ukuhambelana nezinye izongezo. Isetyenziswe ngokubanzi kwi-adhesives ye-tile, i-mortars yokulungisa, i-gypsum yokubeka, i-putty yangaphakathi kunye yangaphandle yodonga, i-gypsum-based caulking kunye ne-filling materials, i-interface agents, i-masonry Kwi-mortars, ifanelekile ukusetyenziswa kwesandla okanye ukutshiza nge-samente-based okanye i-gypsum. udaka olusekwe. Isebenza ngolu hlobo lulandelayo:
(1) Isitatshi i-ether idla ngokusetyenziswa ngokudibeneyo ne-methyl cellulose ether, ebonisa umphumo omhle we-synergistic phakathi kwezi zibini. Ukongeza ubungakanani obufanelekileyo be-starch ether kwi-methyl cellulose ether kunokuphucula kakhulu ukuxhathisa kwe-sag kunye nokumelana nokutyibilika kodaka, ngexabiso eliphezulu lesivuno.
(2) Ukongeza isixa esifanelekileyo se-ether yesitatshi kudaka olune-methyl cellulose ether kunokwandisa kakhulu ukuhambelana kodaka, kuphucule ukumanzi, kunye nokwenza ulwakhiwo lube lula kwaye lugudileyo.
(3) Ukongeza isixa esifanelekileyo se-ether yesitatshi kudaka olune-methyl cellulose ether kunokunyusa ukugcinwa kwamanzi kudaka kunye nokwandisa ixesha elivulekileyo.
Ziziphi iingenelo zokusetyenziswa kunye neendlela zokugcina isitashi se-ether?
Impendulo: Ingasetyenziselwa njenge-admixture yeemveliso ezisekelwe kwi-samente, iimveliso ezisekelwe kwi-gypsum kunye neemveliso ze-ash-calcium.
(1) Izinto eziluncedo kunye nokusetyenziswa:
a. Inomphumo wokuqina kwi-mortar, inokutyeba ngokukhawuleza, kwaye i-lubricity elungileyo;
b. I-dosage incinci, kwaye idosi ephantsi kakhulu inokufezekisa umphumo ophezulu;
c. Ukuphucula isakhono sokuchasana nesilayidi sodaka oludityanisiweyo;
d. ukwandisa ixesha elivulekileyo lezinto eziphathekayo;
e. Ukuphucula ukusebenza kwezinto eziphathekayo kwaye wenze umsebenzi ube lula.
(2) Ugcino:
Imveliso ichaphazeleka kukufuma kwaye kufuneka igcinwe kwindawo eyomileyo nepholileyo kwipakethe yokuqala. Kungcono ukuyisebenzisa kwiinyanga ezili-12. (Kuyacetyiswa ukuba isetyenziswe kunye ne-high-viscosity cellulose ether, kunye nomlinganiselo jikelele we-cellulose ether kwi-starch ether yi-7: 3 ~ 8: 2)
Iyintoni indima ye-methyl cellulose ether kwi-powder mortar eyomileyo?
A: I-Methyl hydroxyethyl cellulose ether (MHEC) kunye ne-methyl hydroxypropyl cellulose ether (HPMC) zibizwa ngokuba yi-methyl cellulose ether.
Kwintsimi yodaka olomileyo lomgubo, i-methyl cellulose ether yinto ebalulekileyo elungisiweyo yodaka lomgubo olomileyo olufana nodaka lokutyabeka, i-gypsum yokutyabeka, i-adhesive tile, i-putty, i-self-leveling material, i-spray mortar, i-adhesive wallpaper kunye ne-caulking material. Kwiintlobo ngeentlobo zomgubo wodaka owomileyo, i-methyl cellulose ether idlala indima enkulu yokugcina amanzi kunye nokujiya.
Yintoni inkqubo yokuvelisa i-cellulose ether?
Impendulo: Okokuqala, i-cellulose ekrwada ichithwa, emva koko i-alkalize kwaye ifakwe phantsi kwesenzo se-caustic soda. Yongeza i-olefin oxide (efana ne-ethylene oxide okanye i-propylene oxide) kunye ne-methyl chloride ye-etherification. Ekugqibeleni, ukuhlanjululwa kwamanzi kunye nokucoca kuqhutyelwa ekugqibeleni ukufumana umgubo omhlophe. Lo mgubo, ngokukodwa isisombululo sawo samanzi, uneempawu ezibonakalayo ezinomdla. I-ether ye-cellulose esetyenziswa kushishino lokwakha i-methyl hydroxyethyl cellulose ether okanye i-methyl hydroxypropyl cellulose (efinyeziweyo njenge-MHEC okanye i-MHPC, okanye igama elenziwe lula ngakumbi i-MC). Le mveliso idlala indima ebaluleke kakhulu kwintsimi yodaka olomileyo lwepowder. indima ebalulekileyo.
Ixesha lokuposa: Jan-30-2023