Umehluko wezakhiwo zomzimba namakhemikhali kanye nokusetshenziswa kwe-HPMC ne-HEMC embonini yezokwakha

Umehluko wezakhiwo zomzimba namakhemikhali kanye nokusetshenziswa kwe-HPMC ne-HEMC embonini yezokwakha

IHydroxypropyl Methylcellulose (HPMC) kanye ne-Hydroxyethyl Methylcellulose (HEMC) yizinhlobo ezimbili zama-cellulose ethers ezivame ukusetshenziswa embonini yezokwakha. Nakuba babelana ngokufana okuthile, kukhona futhi umehluko obalulekile ezimpahleni zabo zomzimba namakhemikhali, kanye nezicelo zabo.

Izakhiwo Zomzimba:

1. Ukunyibilika: I-HPMC ne-HEMC zombili azincibilika emanzini, okusho ukuthi zincibilika kalula emanzini ukuze zakhe isixazululo esicacile. Nokho, ukunyibilika kwe-HEMC kungcono kunokwe-HPMC.
2. I-Viscosity: Kokubili i-HPMC ne-HEMC zingama-thieners futhi zibonisa ukuziphatha kwe-pseudoplastic, okusho ukuthi i-viscosity yabo iyehla uma ingaphansi kwengcindezi yokugunda. I-HEMC ngokuvamile ine-viscosity ephezulu kune-HPMC.
3. Ukugcinwa Kwamanzi: Kokubili i-HPMC kanye ne-HEMC baziwa ngezindawo zabo ezinhle kakhulu zokugcina amanzi, okubenza babe usizo ezinhlelweni zokwakha lapho ukulawulwa komswakama kubalulekile.

Izakhiwo Zekhemikhali:

1. Isakhiwo Sekhemikhali: Umehluko omkhulu phakathi kwe-HPMC ne-HEMC usesimeni sazo samakhemikhali. I-HPMC ineqembu le-hydroxypropyl elinamathiselwe kumgogodla we-cellulose, kuyilapho i-HEMC ineqembu le-hydroxyethyl elinamathiselwe.
2. I-Chemical Reactivity: Kokubili i-HPMC ne-HEMC ama-nonionic cellulose ethers ngakho azinzile kumakhemikhali. Kodwa-ke, i-HEMC iyasebenza kakhulu kune-HPMC ngenxa yokuba khona kweqembu le-ethyl, okwenza kube lula ukuthola i-hydrolysis.

Izicelo:

1. Izicelo ze-HPMC: I-HPMC ivamise ukusetshenziswa ezintweni ezinamathelayo zamathayela, osimende bakasimende, kanye nemikhiqizo esekwe ku-gypsum ngenxa yokugcinwa kwayo kahle kwamanzi kanye nezakhiwo ezijiyayo. Iphinde isetshenziswe kumasistimu okufakwa ngaphakathi nangaphandle (EIFS) ukuthuthukisa ukusebenza kodaka.
2. Izicelo ze-HEMC: I-HEMC ijwayele ukusetshenziswa odakeni olusekelwe kusimende, izinto zokunamathisela zamathayili, nemikhiqizo esekwe ku-gypsum ngenxa yezindawo zayo eziphakeme zokugcina amanzi. Ibuye isetshenziswe kuma-self-leveling compounds, lapho isebenza njenge-ejenti yokulawula ukugeleza.

Kafushane, i-HPMC kanye ne-HEMC yizinhlobo ezimbili zama-cellulose ethers ezivame ukusetshenziswa embonini yezokwakha. Nakuba zabelana ngokufana okuthile, njengokuncibilika kwamanzi, ukuziphatha kwe-pseudoplastic, kanye nezakhiwo ezinhle kakhulu zokugcinwa kwamanzi, kukhona futhi umehluko obalulekile ezimpahleni zazo ezingokomzimba namakhemikhali, kanye nezicelo zazo. I-HPMC ivamise ukusetshenziswa kumathayela anamathelayo, osimende bakasimende, kanye nemikhiqizo esekwe ku-gypsum, kuyilapho i-HEMC ivamise ukusetshenziswa odakeni olusekelwe kusimende, izinto zokunamathisela zamathayela, nezinhlanganisela ezizilinganisa.