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I-Hydroxypropylmethylcellulose (HPMC) iyi-polymer esebenza ngezindlela eziningi esetshenziswa kabanzi embonini yezemithi. Ingaphansi kwesigaba se-cellulose ether futhi itholakala ku-cellulose yemvelo. I-HPMC yenziwa ngokwelapha i-cellulose nge-propylene oxide kanye ne-methyl chloride, okuholela ezinhlanganisela...Funda kabanzi»
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I-Hydroxypropyl methylcellulose (HPMC) akuyona i-plasticizer ngomqondo wendabuko. Iwumkhiqizo we-cellulose ovame ukusetshenziswa embonini yezemithi, yokudla, yokwakha kanye nokunakekelwa komuntu siqu. Nakuba ingasebenzi njenge-plasticizers esetshenziswa kuma-polymers, ibonisa izici ezithile...Funda kabanzi»
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Isembozo se-Hydroxypropyl methylcellulose (HPMC) siyinto eguquguqukayo esetshenziswa kabanzi ezinhlotsheni ezahlukene zezicelo kuzo zonke izimboni. I-HPMC iyi-polymer eyenziwe kancane, engasebenzi, engenabo ubuthi etholakala ku-cellulose. Ivame ukusetshenziswa njengento yokumboza imithi, ukudla kanye nezinye...Funda kabanzi»
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Isingeniso ku-Hydroxypropyl Methylcellulose (HPMC) I-Hydroxypropyl methylcellulose, eyaziwa kakhulu ngokuthi i-HPMC, iyi-cellulose derivative eguquliwe kusuka ku-cellulose yemvelo. Isetshenziswa kabanzi kwezokwakha, kwezemithi, ekudleni nakwezinye izimboni, ikakhulukazi embonini ye-PVC. Le nhlanganisela iyi-wh...Funda kabanzi»
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I-Hydroxypropyl methylcellulose (HPMC) iyisengezo esisetshenziswa kabanzi embonini yokwakha, ikakhulukazi ezintweni ezisekelwe kusimende. Izakhiwo zayo ezihlukile ziyenza ibe yingxenye ebalulekile ezinhlotsheni ezahlukene zokusebenza, kusukela ekuthuthukiseni ukusebenza kahle kuya ekuthuthukiseni ukusebenza nokuqina kwekhonkrithi ...Funda kabanzi»
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Imboni yokwakha iyaqhubeka nokukhula, ifuna izinto ezintsha zokuthuthukisa ukusebenza kwezakhiwo zobumba. Enye yezinto ezithola ukunakwa okukhulu yi-vinyl acetate-ethylene (VAE) redispersible polymer powder (RDP). Le mpuphu eguquguqukayo ibonakale ibaluleke kakhulu ekuthuthukisweni...Funda kabanzi»
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Izinamathiseli zephepha lodonga zidlala indima ebalulekile ekusetshenzisweni ngempumelelo kanye nobude besikhathi sephepha lodonga. I-Hydroxypropyl methylcellulose (HPMC) iyisengezo esiguquguqukayo esisetshenziswa kabanzi ekwakhiweni kwezinamathiseli zephepha lodonga ukuthuthukisa izakhiwo ezahlukahlukene, okuhlanganisa amandla okubopha, ukucutshungulwa kanye nokufuma...Funda kabanzi»
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A. Ifomula yokunamathela kwethayela: 1. Ukwakheka okuyisisekelo: Ukunamathela kwethayela ngokuvamile kuqukethe ingxube yesamente, isihlabathi, ama-polymer kanye nezithasiselo. Ukwakheka okuthile kungahluka kuye ngohlobo lwethayela, isisekelo kanye nezimo zemvelo. 2. Ukunamathela kwethayela okusekelwe kusimende: Usimende wasePortland: Kuhlinzeka ngokuqina kwesibopho...Funda kabanzi»
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Ukukhiqizwa kwezimbotshana ezizilinganisayo ezisekelwe ku-gypsum kudinga ukusetshenziswa kwezinto ezihlukahlukene zokusetshenziswa, ngayinye ethinta izakhiwo ezithile zomkhiqizo wokugcina. Ingxenye ebalulekile yesimbotshana esizilinganisayo yi-cellulose ether, okuyisengezo esibalulekile. Isimbotshana esizilinganisayo esisekelwe ku-gypsum...Funda kabanzi»
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I-Polyanionic cellulose (PAC) iwumkhiqizo we-cellulose oncibilika emanzini osetshenziswa kabanzi embonini kawoyela negesi, ikakhulukazi ekuqhekekeni kwezakhi zoketshezi. Ukuqhekeka kwe-hydraulic, okwaziwa kakhulu ngokuthi i-fracking, kuyindlela yokuvuselela esetshenziswa ukwandisa ukukhishwa kwamafutha negesi yemvelo...Funda kabanzi»
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1. Isakhiwo samakhemikhali: I-Formic acid (HCOOH): Iyi-carboxylic acid elula enefomula yamakhemikhali i-HCOOH. Yakhiwa yiqembu le-carboxyl (COOH), lapho i-hydrogen inamathele khona ku-carbon kanti enye i-oxygen yakha isibopho esiphindwe kabili ne-carbon. I-Sodium formate (HCCONA): Usawoti we-sodium we...Funda kabanzi»
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Isifinyezo: Eminyakeni yamuva nje, izembozo ezisekelwe emanzini zitholwe ukunakwa kabanzi ngenxa yobungani bazo bemvelo kanye nokuqukethwe okuphansi kwe-volitable organic compound (VOC). I-Hydroxyethylcellulose (HEC) iyi-polymer encibilika emanzini esetshenziswa kabanzi kulezi zindlela, esebenza njengesithambisi sokwandisa ...Funda kabanzi»