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I-HPMC, noma i-hydroxypropyl methylcellulose, iyi-polymer eguquguqukayo etholakala ku-cellulose, into yemvelo etholakala ezindongeni zamaseli ezitshalo. Izinto ezisekelwe ku-HPMC zithole ukunakwa okukhulu kuzo zonke izimboni ngenxa yezakhiwo zazo ezihlukile kanye nobubanzi bezicelo. Isingeniso...Funda kabanzi»
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1. Isingeniso: Ekwakhiweni kwemithi, ama-binder adlala indima ebalulekile ekuqinisekiseni ubuqotho nokusebenza kahle kwamafomu omthamo. Phakathi kwezinhlelo ezahlukene ze-binder ezitholakalayo, i-Hydroxypropyl Methylcellulose (HPMC) ivelele njengenketho eguquguqukayo nesetshenziswa kabanzi. 2. Izakhiwo ze-HPMC Binder Systems...Funda kabanzi»
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I-Hydroxypropyl methylcellulose (HPMC) iyi-polymer eguquguqukayo evame ukusetshenziswa ezimbonini ezahlukahlukene, okuhlanganisa ukwakhiwa, imithi, ukudla, kanye nezimonyo. Ekwakhiweni, i-HPMC idlala indima ebalulekile njengesithako ezintweni ezisekelwe kusimende, ikakhulukazi ekuthuthukiseni amandla okubopha. 1.Int...Funda kabanzi»
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I-MC iyi-methyl cellulose, etholakala ngokwelapha ukotini ocolisisiwe nge-alkali, kusetshenziswa i-methyl chloride njenge-etherifying, kanye nokwenza i-cellulose ether ngochungechunge lwezimpendulo. Ngokuvamile, izinga lokushintshana lingu-1.6 ~ 2.0, kanti ukuncibilika nakho kuhlukile ngamadigri ahlukene ...Funda kabanzi»
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Umkhiqizi we-HPMC hydroxypropyl methyl cellulose umkhiqizi womthengisi wefektri umthengisi ngaphandle Iyini ukusetshenziswa okuyinhloko kwe-HPMC? I-HPMC ingahlukaniswa ibe: ibanga lokwakha, ibanga lokudla kanye nebanga lezokwelapha ngokusetshenziswa. I-HPMC isetshenziswa kabanzi ezintweni zokwakha, ezimbozweni, ezinhlakeni zokwenziwa, ezitsheni zobumba, emithini, ekudleni, endwangu...Funda kabanzi»
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I-Cellulose ether iyinhlanganisela ye-polymer enesakhiwo se-ether esenziwe nge-cellulose. Indandatho ngayinye ye-glucosyl ku-macromolecule ye-cellulose iqukethe amaqembu amathathu e-hydroxyl, iqembu eliyinhloko le-hydroxyl ku-athomu yesithupha yekhabhoni, iqembu lesibili le-hydroxyl kuma-athomu ekhabhoni yesibili neyesithathu, kanye ne-hydrog...Funda kabanzi»
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I-cellulose ether izokwandisa isikhathi sokubeka i-cement paste noma i-mortar net, ibambezele i-cement hydration kinetics, okuzuzisa ukuthuthukisa isikhathi sokusebenza sezinto eziyisisekelo ze-cement, ithuthukise ukuhambisana kanye nokuwa kwekhonkrithi ngemva kokulahlekelwa, kodwa futhi ingase ilibazise inqubekela phambili yokwakha, ikakhulukazi...Funda kabanzi»
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Ekusetshenzisweni kodaka olumanzi, i-hydroxypropyl methylcellulose inezakhiwo ezinhle zokujiya, ingakhulisa kakhulu ikhono lokubopha phakathi kodaka olumanzi kanye nesendlalelo sesisekelo, futhi ingathuthukisa nokusebenza kodaka okulwa nokuwa, ngakho-ke isetshenziswa kabanzi ekuplasteni i-Mortar, udonga lwangaphandle ...Funda kabanzi»
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Umphumela wokujiya kwe-cellulose ether uncike ku: izinga lokupholimetha kwe-cellulose ether, ukuhlushwa kwesisombululo, izinga lokucheba, izinga lokushisa nezinye izimo. Impahla ye-gelling yesisombululo ihlukile ku-alkyl cellulose kanye nezinto ezisuselwe kuyo eziguquliwe. Izakhiwo ze-gelation...Funda kabanzi»
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1. Ukushisa komswakama Ngokusho kwejika lokukhishwa kokushisa komswakama ngokuhamba kwesikhathi, inqubo yomswakama wesimende ivame ukuhlukaniswa ngezigaba ezinhlanu, okungukuthi, isikhathi sokuqala somswakama (0~15min), isikhathi sokungeniswa (15min~4h), isikhathi sokusheshisa kanye nokusetha (4h~8h), ukwehla kwesivinini ...Funda kabanzi»
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Ekusetshenzisweni kwezinto zokwakha, i-hydroxypropyl methylcellulose iyisengezo sezinto zokwakha esisetshenziswa kakhulu, kanti i-hydroxypropyl methylcellulose isetshenziswa kabanzi embonini futhi inezinhlobo ezahlukene. I-Hydroxypropyl methylcellulose ingahlukaniswa ibe uhlobo olusheshayo lwamanzi abandayo kanye nohlobo oluncibilikayo olushisayo,...Funda kabanzi»
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Ku-putty, i-cement mortar kanye ne-slurry esekelwe ku-gypsum, i-HPMC hydroxypropyl methylcellulose ether idlala indima yokugcina amanzi kanye nokuqina, futhi ingathuthukisa ngempumelelo ukumelana nokunamathela kanye nokuwohloka kwe-slurry. Izici ezifana nokushisa komoya, izinga lokushisa kanye nesivinini sokucindezela komoya zizokwenza...Funda kabanzi»