Kukhona ukulinganiselwa ekuthuthukiseni ukusebenza kwe-gypsum paste nge-admixture eyodwa.Uma ukusebenza kwe-gypsum mortar kuwukuthola imiphumela egculisayo futhi kuhlangatshezwane nezidingo ezihlukene zohlelo lokusebenza, izixube zamakhemikhali, izixube, izigcwalisi kanye nezinhlobonhlobo zezinto ezidingekayo ukuze kuhlanganiswe futhi kuphelelisane ngokwesayensi nangokunengqondo.
1. I-coagulant
I-coagulant elawulayo ihlukaniswe ikakhulukazi i-retarder ne-coagulant.Ku-gesso dry mix mortar, umkhiqizo osebenzisa i-gesso ephekiwe ukwenza konke ukusebenzisa i- delay coagulate ejenti, sebenzisa i-gesso anhydrous noma umkhiqizo osebenzisa i-gesso yamanzi engu-2 ukwenza ngokuqondile udinga ukugqugquzela i-coagulate ejenti.
2. Obuyisela emuva
Ngokungeza i-retarder ku-gypsum ezomile zokwakha ezixubile, inqubo ye-hydration ye-semi-hydrous gypsum iyavinjelwa futhi isikhathi sokuqinisa siyandiswa.Izimo ze-hydration ze-gypsum plaster zihlukahlukene, okuhlanganisa ukwakheka kwesigaba se-gypsum plaster, izinga lokushisa le-gypsum material, ukucolisa kwezinhlayiyana, isikhathi sokubeka kanye nenani le-pH lomkhiqizo ophelile.Isici ngasinye sinomthelela othile emthelela wokuhlehlisa, ngakho-ke kunomehluko omkhulu enanini le-ejenti ebambezela phansi ngaphansi kwezimo ezahlukene.Njengamanje, i-retarder ekhethekile ye-gypsum yasekhaya engcono kakhulu i-metamorphic protein (high protein) retarder, inezinzuzo zezindleko eziphansi, isikhathi eside sokubuyisela emuva, ukulahlekelwa amandla amancane, ukwakhiwa okuhle, isikhathi eside sokuvula njalonjalo.Ohlotsheni oluphansi lwe-stucco gypsum inani lokulungiswa ngokuvamile li-0.06% ~ 0.15%.
3. I-coagulant
Ukusheshisa isikhathi esinyakazayo se-slurry nokwelula isivinini esinyakazayo sodaka kungenye yezindlela ezingokomzimba zokukhuthaza ukuhlangana.Ama-coagulants amakhemikhali avame ukusetshenziswa ezintweni zokwakha ze-gypsum anhydrous powder yi-potassium chloride, i-potassium silicate, i-sulfate namanye ama-acids.Umthamo ngokuvamile ngu-0.2% ~ 0.4%.
4. I-ejenti yokugcina amanzi
Izinto zokwakha ze-Gesso dry mix azikwazi ukushiya i-ejenti yokuvikela amanzi.Ukwenza ngcono izinga lokugcinwa kwamanzi kwe-slurry yomkhiqizo we-gypsum ukuqinisekisa ukuthi amanzi angaba khona ku-gypsum slurry isikhathi eside ukuze athole ukugeleza okuhle nokuqina komphumela.Ukuthuthukisa ukwakheka kwezinto zokwakha ze-gypsum powder, ukunciphisa nokuvimbela ukuhlukaniswa kanye nokopha kwe-gypsum slurry, ukuthuthukisa ukugeleza kwe-slurry okulenga, ukwandisa isikhathi sokuvula, ukuxazulula izinkinga zekhwalithi yobunjiniyela njengokuqhekeka nesigubhu esingenalutho azihlukaniseki ne-ejenti yokugcina amanzi.Ukuthi i-ejenti yokugcina amanzi ilungile incike ikakhulukazi ekuhlakazeni kwayo, ukuncibilika okusheshayo, ukubumba, ukuzinza kokushisa nokuqina, phakathi kwalokho ukugcinwa kwamanzi kuyinkomba ebaluleke kakhulu.
I-ejenti ye-cellulose ether egcina amanzi
Njengamanje, i-hydroxypropyl methyl cellulose iyona esetshenziswa kakhulu emakethe, ilandelwa yi-methyl cellulose, kanye ne-carboxymethyl cellulose.Izici eziphelele ze-hydroxypropyl methyl cellulose zingcono kune-methyl cellulose.Ukugcinwa kwamanzi kwe-hydroxypropyl methyl cellulose kuphakeme kakhulu kunaleyo ye-carboxymethyl cellulose, kodwa umphumela wokujiya nomphumela wokubopha kubi kakhulu kunalowo we-carboxymethyl cellulose.Ezimpahleni zokwakha ezixutshwe ne-gypsum ezomile, inani le-hydroxypropyl ne-methyl cellulose liku-0.1% ~ 0.3%, kanti inani le-carboxymethyl cellulose liku-0.5% ~ 1.0%.
I-ejenti egcina amanzi isitashi
Uhlobo lwesitashi luvikela i-ejenti yamanzi ngokuyisisekelo lisebenzisa e-gesso be putty enganeni, imodeli yongqimba yobuso ye-stucco gesso, ingangena esikhundleni sohlobo lwe-cellulose oluyingxenye noma oluphelele luvikela i-ejenti yamanzi.Ukusebenza, ukwakheka kanye nokuvumelana kwe-slurry kungathuthukiswa ngokungeza isitashi esigcina amanzi ezintweni zokwakha ezomile ze-gypsum.Imikhiqizo esetshenziswa kakhulu isitashi egcina amanzi isitashi se-cassava, isitashi sangaphambi kwe-gelatinized, isitashi se-carboxymethyl, isitashi se-carboxypropyl.Uhlobo lwesitashi luvikela umthamo we-ejenti yamanzi ukuthi ube ku-0.3% ~ 1% ngokujwayelekile, uma umthamo mkhulu kakhulu umhlangano wenza umkhiqizo we-gesso ukhiqize into yokukhunta ngaphansi kwendawo eswakeme, ithinte ikhwalithi yephrojekthi ngqo.
③ I-ejenti yokugcina amanzi yohlobo lweglue
Amanye ama-adhesive asheshayo nawo angadlala indima engcono ekugcineni amanzi.Okufana ne-17-88, 24-88 polyvinyl alcohol powder, i-green gum kanye ne-guar gum esetshenziselwa ukuhlanganisa i-gypsum, i-gypsum putty, i-gypsum insulation glue nezinye izinto zokwakha ezixutshwe ne-gypsum ezomile, ngenani elithile lecala, zinganciphisa inani i-ejenti yokugcina amanzi ye-cellulose.Ikakhulukazi ku-gypsum enamathela ngokushesha, ingathatha indawo ye-cellulose ethers kwezinye izimo.
(4) Izinto ezigcina amanzi ezingaphili
Ukusetshenziswa kwenhlanganisela yezinye izinto ezigcina amanzi ku-gypsum ezomile ezixubile zokwakha kunganciphisa inani lezinye izinto ezigcina amanzi, kunciphise izindleko zemikhiqizo, futhi kuthuthukise ukusebenza nokwakhiwa kwe-gypsum slurry.Izinto ezisetshenziswa kakhulu zokugcina amanzi ezingaphili yi-bentonite, i-kaolin, i-diatomite, i-zeolite powder, i-perlite powder, ubumba lwe-attapulgite, njll.
5. Ingcina
Ukusetshenziswa kwe-adhesive ku-gypsum eyomile yezinto zokwakha ezihlanganisiwe kungaphansi kuphela ku-ejenti yokugcina amanzi kanye ne-retarder.I-Gesso self leveling mortar, i-gesso enamathelayo, i-caulking gesso, ukugcinwa kokushisa kwe-gesso glue ayikwazi ukushiya into enamathelayo.
I-latex powder ehlakazeka kabusha:
Redispersible latex powder isetshenziswa kakhulu ku-gypsum self-leveling mortar, gypsum insulation glue, gypsum caulking putty nokunye.Ikakhulukazi ku-gypsum self-leveling mortar, ingenza i-slurry viscidity, i-fluidity enhle, ukunciphisa i-stratification, ukugwema ukopha, ukuthuthukisa ukumelana nokuqhekeka nokunye kwadlala indima enkulu.Ukusetshenziswa ngokuvamile kungu-1.2% ~ 2.5%.
I-polyvinyl alcohol esheshayo:
Njengamanje, i-polyvinyl alcohol encibilika ngokushesha onomthamo owengeziwe emakethe ingu-24-88, 17-88 umkhiqizo wamamodeli amabili, avame ukusetshenziselwa ukhonkolo wokunamathisela, i-gesso, iglue yokulondoloza ukushisa okuhlanganisiwe, i-stucco plaster neminye imikhiqizo, umthamo ku-0.4% ~ 1.2% ngokujwayelekile.
I-Guar gum, i-gelatin yasendle, i-carboxymethyl cellulose, i-starch ether nokunye kuyizinto zokunamathisela ezinemisebenzi ehlukene yokubopha ezintweni zokwakha ezixubene ne-gypsum.
6. Ukuqina
Ukujiya ikakhulukazi ukuthuthukisa ukusebenza kanye ne-fluidity ye-gypsum slurry, efana ne-adhesive kanye ne-ejenti yokugcina amanzi, kodwa hhayi ngokuphelele.Omunye umkhiqizo we-ejenti ejiyayo muhle ekuhlonipheni umphumela wokuqina, kodwa inhlonipho ayilungile ngamandla ahlangene, izinga lokugcinwa kwamanzi.Uma wenza izinto zokwakha ze-gypsum powder dry, umphumela oyinhloko we-admixture kufanele ucatshangelwe ngokugcwele ukuze usebenzise i-admixture kangcono futhi ngokunengqondo.Imikhiqizo ye-thickener evame ukusetshenziswa yi-polyacrylamide, i-green gum, i-guar gum, i-carboxymethyl cellulose.
7. I-ejenti yokungenisa umoya
I-ejenti efaka umoya yaziwa nangokuthi i-ejenti ekhihliza amagwebu, ikakhulukazi esetshenziswa ku-glue yokufaka i-gypsum, ukhonkolo kanye nezinye izinto zokwakha ezixutshwe nge-gypsum ezomile.I-ejenti yokungenisa umoya (i-ejenti ekhihliza amagwebu) isiza ukuthuthukisa ukwakhiwa, ukumelana nokuqhekeka, ukumelana nesithwathwa, ukunciphisa ukopha nokuhlukanisa okwenzekayo, umthamo uvame ukuba ku-0.01% ~ 0.02%.
8. I-ejenti yokukhipha amagwebu
I-ejenti yokukhipha amagwebu ivame ukusetshenziswa ku-gesso self-leveling motar, gesso caulking be putty in, ingakhuphula ukuminyana kwe-pulp, amandla, ukumelana namanzi, ucansi lwe-caking, umthamo uku-0.02% ~ 0.04% ngokujwayelekile.
9. I-ejenti yokunciphisa amanzi
I-ejenti yokunciphisa amanzi ingathuthukisa i-gesso slurry fluidity namandla omzimba aqinisa i-gesso, ngokuvamile ku-gesso self leveling mortar, stucco gesso.Njengamanje, i-ejenti yokunciphisa amanzi asekhaya iyi-ejenti enciphisa amanzi e-polycarboxylic acid, i-ejenti yokunciphisa amanzi ye-melamine esebenza kahle kakhulu, uhlelo lwetiye olusebenza kahle kakhulu lokunciphisa amanzi, i-ejenti yokunciphisa amanzi i-lignosulfonate ngokusho kwe-fluidity namandla.Ngaphezu kokusetshenziswa kwamanzi namandla, kuyadingeka ukunaka isikhathi sokubeka kanye nokulahlekelwa kwe-fluidity yezinto zokwakha ze-gypsum lapho usebenzisa i-ejenti yokunciphisa amanzi ku-gypsum ezomile ezixubene zokwakha izinto zokwakha.
10. I-ejenti yokuvimbela amanzi
Isici esikhulu semikhiqizo ye-gypsum ukungazweli kahle kwamanzi.Indawo enomswakama omkhulu womoya inezidingo eziphakeme zokumelana namanzi kudaka oluxubile lwe-gypsum.Ngokuvamile, ukumelana kwamanzi komzimba oqinile we-gypsum kuyathuthukiswa ngokungeza i-hydraulic admixture.Ngaphansi kwesimo samanzi amanzi noma agcwele, i-coefficient ethambile ye-gypsum yomzimba oqinile ingafinyelela ku-0.7, ukuze ihlangabezane nezidingo zamandla omkhiqizo.Izingxube zamakhemikhali nazo zingasetshenziswa ukunciphisa ukuncibilika kwe-gypsum (okungukuthi, ukwandisa i-coefficient yokuthambisa), ukunciphisa ukumuncwa kwe-gypsum emanzini (okungukuthi, ukunciphisa ukumuncwa kwamanzi) nokunciphisa ukuguguleka komzimba oqinile we-gypsum (okungukuthi, amanzi. isolation) indlela yokumelana namanzi.I-ejenti engangeni manzi ye-Gypsum ine-ammonium borate, i-methyl sodium silicate, i-silicone resin, i-milk fossil wax, umphumela ungcono futhi i-silicone emulsion ejenti engangeni manzi.
11. Isiqalisi esisebenzayo
I-gypsum yemvelo nekhemikhali ye-anhydrous ingavulwa ukuze inamathele futhi iqine, ukuze ifaneleke ukukhiqizwa kwezinto zokwakha ezixutshwe ne-gypsum ezomile.I-activator ye-Acid ingasheshisa izinga le-hydration yokuqala ye-anhydrous gypsum, inciphise isikhathi sokusetha futhi ithuthukise amandla okuqala omzimba oqinile we-gypsum.I-activator ye-alkali inomthelela omncane ekulinganiseni kokuqala kwe-hydration ye-anhydrous gypsum, kodwa ngokusobala ingathuthukisa amandla kamuva omzimba oqinile we-gypsum, futhi ingaba yingxenye ye-hydraulic cementing material emzimbeni oqinile we-gypsum, okuthuthukisa ngempumelelo ukumelana kwamanzi komzimba oqinile we-gypsum. .Umthelela wokufakwa kwe-acid-base compound activator ungcono kunowe-asidi eyodwa noma isiqalisi esiyisisekelo.Ama-Acid activators afaka i-potassium alum, i-sodium sulfate, i-potassium sulfate nokunye.I-alkaline activators ihlanganisa i-quicklime, usimende, i-cement clinker, i-dolomite e-calcined njalonjalo.
Thixotropic lubricant
I-lubricant ye-Thixovariable isetshenziswa ku-gypsum yokuzilinganisa noma i-stuccoing gypsum, enganciphisa ukumelana nokugeleza kwe-gypsum mortar, yandise isikhathi sokuvula, ivimbele ukuhlukaniswa nokuxazululwa kwe-slurry, ukuze wenze i-slurry ithole ukuthambisa okuhle nokwakhiwa, ngenkathi yenza ukuqina kwesakhiwo somzimba umfaniswano, ukwandisa amandla ayo ebusweni.
Isikhathi sokuthumela: May-25-2022