IHydroxypropyl methylcellulose isetshenziswa kakhulu njenge-dispersant ekukhiqizeni i-polyvinyl chloride, futhi iyi-ejenti eyinhloko eyisizayo yokulungiselela i-PVC ngokumiswa kwe-polymerization.Enqubweni yokwakhiwa kwemboni yezokwakha, isetshenziswa kakhulu ekwakhiweni kwemishini njengokwakhiwa kodonga, ukuplasta, ukugoqa, njll.;ikakhulukazi ekwakhiweni kokuhlobisa, isetshenziselwa ukunamathisela amathayela e-ceramic, imabula, nemihlobiso yepulasitiki.Inamandla okubopha okuphezulu futhi inganciphisa inani likasimende..Isetshenziswa njenge-thickener embonini yepende, engenza ungqimba lukhanye futhi luntekenteke, luvimbele ukukhishwa kwempushana, luthuthukise ukusebenza kwezinga, njll.
Odakeni lukasimende kanye ne-gypsum-based slurry, i-hydroxypropyl methylcellulose idlala indima enkulu yokugcina amanzi nokuqina, okungathuthukisa ngempumelelo amandla okubumbana nokumelana nokucwila kwe-slurry.Izinto ezifana nezinga lokushisa lomoya, izinga lokushisa kanye nesivinini somfutho womoya zizothinta izinga lokuguquguquka kwamanzi odaka lukasimende kanye nemikhiqizo esekelwe ku-gypsum.Ngakho-ke, ezinkathini ezihlukene zonyaka, kunomehluko othile kumphumela wokugcina amanzi wemikhiqizo enenani elifanayo le-hydroxypropyl methylcellulose engeziwe.Ekwakhiweni okukhethekile, umphumela wokugcina amanzi we-slurry ungalungiswa ngokwandisa noma ukwehlisa inani le-HPMC elingeziwe.Ukugcinwa kwamanzi kwe-methyl cellulose ether ngaphansi kwezimo zokushisa okuphezulu kuyinkomba ebalulekile yokuhlukanisa ikhwalithi ye-hydroxypropyl methyl cellulose ether.Imikhiqizo yochungechunge oluhle kakhulu lwe-hydroxypropyl methylcellulose ingaxazulula ngokuphumelelayo inkinga yokugcinwa kwamanzi ngaphansi kwezinga lokushisa eliphezulu.Ezikhathini zokushisa okuphezulu, ikakhulukazi ezindaweni ezishisayo nezomile kanye nokwakhiwa kongqimba oluncane ohlangothini olushisayo, i-HPMC yekhwalithi ephezulu iyadingeka ukuze kuthuthukiswe ukugcinwa kwamanzi odaka.
Ikhwalithi ephezulu ye-hydroxypropyl methylcellulose (HPMC) inokufana okuhle kakhulu.Amaqembu ayo e-methoxy kanye ne-hydroxypropoxy asatshalaliswa ngokulinganayo eduze kweketango lamangqamuzana e-cellulose, elingakhuphula ama-athomu omoya-mpilo ku-hydroxyl ne-ether bond.Ikhono lokuzihlanganisa namanzi ukwenza amabhondi e-hydrogen aphendulela amanzi amahhala abe amanzi abophekile, ngaleyo ndlela alawule ngempumelelo ukuhwamuka kwamanzi okubangelwa izinga lokushisa eliphezulu kanye nokuzuza ukugcinwa kwamanzi okuphezulu.Amanzi ayadingeka ukuze kufakwe amanzi ukuze kusethwe izinto zikasimende ezifana usimende negypsum.Inani elilungile le-HPMC lingagcina umswakama othulini isikhathi eside esanele ukuze ukusethwa kanye nenqubo yokuqina kuqhubeke.
Inani le-hydroxypropyl methylcellulose (HPMC) elidingekayo ukuze uthole ukugcinwa kwamanzi okwanele lincike kulokhu:
Ukumuncwa kwesendlalelo sesisekelo
Ukwakhiwa kwe-Mortar
Ugqinsi lwesendlalelo sodaka
Isidingo samanzi odaka
Isikhathi sokumisa se-cementitious material
IHydroxypropyl methylcellulose ingahlakazwa ngendlela efanayo nangempumelelo odakeni lukasimende kanye nemikhiqizo esekwe ku-gypsum, bese isonga zonke izinhlayiya eziqinile, futhi yakha ifilimu yokumanzisa, umswakama osesisekelweni ukhishwa kancane kancane isikhathi eside, futhi uyahambisana ne-inorganic. Ukusabela kwe-hydration ye-gelled material kuqinisekisa amandla esibopho namandla okucindezelayo wento.
Ngakho-ke, ekwakhiweni kwehlobo lokushisa eliphezulu, ukuze kuzuzwe umphumela wokugcina amanzi, kuyadingeka ukwengeza imikhiqizo ye-HPMC yekhwalithi ephezulu ngobuningi obanele ngokusho kwefomula, ngaphandle kwalokho, kuyoba khona ukugeleza okwanele, amandla ancishisiwe, ukuqhekeka, ukugoba. kanye nokuchitheka okubangelwa ukomiswa ngokweqile.izinkinga, kodwa futhi ukwandisa nobunzima ukwakhiwa kwabasebenzi.Njengoba izinga lokushisa lehla, inani lamanzi i-HPMC engeziwe lingancishiswa kancane kancane, futhi umphumela ofanayo wokugcina amanzi ungafinyelelwa.
Isikhathi sokuthumela: Apr-10-2023