I-Hydroxypropyl methylcellulose, ebizwa ngokuthi: HPMC noma i-MHPC.Ukubukeka kumhlophe noma impushana emhlophe;ukusetshenziswa okuyinhloko kunjenge-dispersant ekukhiqizeni i-polyvinyl chloride, futhi iyi-ejenti eyinhloko eyisizayo yokulungiswa kwe-PVC ngokumiswa kwe-polymerization.Enqubweni yokwakha yemboni yezokwakha, isetshenziswa ikakhulukazi 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 kapende, 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 ahlangene kanye 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-methyl cellulose ether.
Imikhiqizo yochungechunge oluhle kakhulu lwe-hydroxypropyl methylcellulose ingaxazulula ngokuphumelelayo inkinga yokugcinwa kwamanzi ngaphansi kwezinga lokushisa eliphezulu.Ezinkathini zokushisa eziphakeme, ikakhulukazi ezindaweni ezishisayo nezomile kanye nokwakhiwa kongqimba oluncane ohlangothini olushisayo, i-HPMC yekhwalithi ephezulu iyadingeka ukuze kuthuthukiswe ukugcinwa kwamanzi odaka.
Ikhwalithi ephezulu ye-HPMC inokufana okuhle kakhulu.Amaqembu ayo e-methoxy kanye ne-hydroxypropoxy asatshalaliswa ngokulinganayo eceleni kweketango lamangqamuzana e-cellulose, elingathuthukisa ikhono lama-athomu omoya-mpilo ku-hydroxyl ne-ether bond ukuze ahlangane namanzi ukuze akhe ibhondi ye-hydrogen., ukuze amanzi amahhala abe amanzi abophekile, ukuze alawule ngokuphumelelayo ukuhwamuka kwamanzi okubangelwa izinga lokushisa eliphezulu, futhi kuzuzwe ukugcinwa kwamanzi aphezulu.
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-HPMC elidingekayo ukuze uthole ukugcinwa kwamanzi okwanele lincike kulokhu:
1. Ukumunca kwesendlalelo sesisekelo
2. Ukwakheka kodaka
3. Ugqinsi lwengqimba yodaka
4. Isidingo samanzi sodaka
5. Isikhathi sokusetha se-gelling material
Ikhwalithi ephezulu ye-hydroxypropyl methylcellulose ingahlakazwa ngokulinganayo nangempumelelo odakeni lukasimende kanye nemikhiqizo esekwe ku-gypsum, futhi isonge zonke izinhlayiya eziqinile, futhi yakha ifilimu yokumanzisa, futhi umswakama osesisekelweni udedelwa kancane kancane ngokuhamba kwesikhathi eside , ukusabela kwe-hydration nge-inorganic gelling material ukuqinisekisa amandla okubopha kanye namandla acindezelayo 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: Jan-16-2023