5. Izinkinga ngomthamo we-ejenti yokunciphisa amanzi ye-polycarboxylate

Umthamo we-ejenti yokunciphisa amanzi ye-polycarboxylate iphansi, izinga lokunciphisa amanzi liphezulu, futhi ukuwohloka kugcinwa kahle, kodwa izinkinga ezilandelayo nazo zenzeka ekusebenzeni:

① Umthamo uzwela kakhulu uma isilinganiso samanzi ukuya kusimende sisincane, futhi sibonisa izinga eliphezulu lokunciphisa amanzi. Kodwa-ke, lapho isilinganiso samanzi kuya kusimende sikhulu (ngaphezu kuka-0.4), izinga lokunciphisa amanzi kanye nezinguquko zalo azibonakali kangako, okungenzeka zihlobene ne-polycarboxylic acid. Indlela yokusebenza ye-ejenti yokunciphisa amanzi esekelwe kwi-asidi ihlobene nomphumela wayo wokuhlakazeka nokugcinwa kwayo ngenxa yomphumela wokuvinjelwa owenziwe yisakhiwo samangqamuzana. Uma isilinganiso se-water-binder sikhulu, kuba nesikhala esanele phakathi kwama-molecule amanzi ohlelweni lokuhlakazwa kukasimende, ngakho-ke isikhala phakathi kwama-molecule e-polycarboxylic acid Umphumela wokuvimbela i-steric uncane ngokwemvelo.

② Uma inani lezinto zikasimende likhulu, umthelela womthamo ubonakala kakhulu. Ngaphansi kwezimo ezifanayo, umphumela wokunciphisa amanzi lapho inani eliphelele lezinto zikasimende li-<300kg/m3 lincane kunezinga lokunciphisa amanzi lapho inani eliphelele lezinto zikasimende>400kg/m3. Ngaphezu kwalokho, lapho isilinganiso samanzi-samente sikhulu futhi inani lezinto zikasimende lincane, kuzoba nomphumela ophakeme.

I-Polycarboxylate superplasticizer yenzelwe ukhonkolo osebenza kakhulu, ngakho-ke ukusebenza kwayo kanye nentengo kulungele kakhulu ukhonkolo osebenza kakhulu.

6. Mayelana nokuhlanganiswa kwama-ejenti okunciphisa amanzi e-polycarboxylic acid

Ama-agent okunciphisa amanzi e-Polycarboxylate awakwazi ukuhlanganiswa nama-ejenti okunciphisa amanzi asekelwe ku-naphthalene. Uma ama-ejenti amabili anciphisa amanzi esetshenziswa emishinini efanayo, azoba nomthelela uma engahlanzwa kahle. Ngakho-ke, kuvame ukudingeka ukuthi kusetshenziswe isethi ehlukile yemishini yama-ejenti okunciphisa amanzi asuselwa ku-polycarboxylic acid.

Ngokwesimo samanje sokusetshenziswa, ukuhambisana kwenhlanganisela ye-ejenti yokungenisa umoya ne-polycarboxylate kuhle. Isizathu esiyinhloko ukuthi inani le-ejenti yokungenisa umoya liphansi, futhi "lingakwazi ukuhambisana" ne-polycarboxylic acid-based ejenti yokunciphisa amanzi ukuze ihambisane nakakhulu. , okuhambisanayo. I-sodium gluconate ku-retarder nayo inokuhambisana okuhle, kodwa ayihambisani kahle nezinye izithasiselo zikasawoti ezingaphili futhi kunzima ukuyihlanganisa.

7. Mayelana nevelu engu-PH ye-ejenti yokunciphisa amanzi ye-polycarboxylic acid

Inani le-pH lama-ejenti okunciphisa amanzi asuselwa ku-polycarboxylic acid liphansi kunalawo amanye ama-ejenti okunciphisa amanzi asebenza kahle kakhulu, amanye awo angama-6-7 kuphela. Ngakho-ke, kudingekile ukuthi zigcinwe ku-fiberglass, ipulasitiki nezinye iziqukathi, futhi azikwazi ukugcinwa ezitsheni zensimbi isikhathi eside. Kuzokwenza ukuthi i-ejenti yokunciphisa amanzi ye-polycarboxylate ibe yimbi, futhi ngemva kokugqwala kwe-asidi yesikhathi eside, izothinta impilo yesitsha sensimbi kanye nokuphepha kwesistimu yokugcina nokuthutha.