Hydroxypropyl Methylcellulose (HPMC) is a cellulose ether inowanzoshandiswa mumaindasitiri akasiyana, kusanganisira kuvaka, mishonga, chikafu, uye zvizorwa. Mukuvaka, HPMC inowanzo shandiswa sechinhu chinowedzera mudhaka nekuda kwekugona kwayo kuvandudza zvimiro zvakasiyana zvemusanganiswa wedhaka, kusanganisira kushanda, kuchengetedza mvura, uye kunamatira. Imwe yeakakosha maficha ekuita kwedhaka isimba rayo, uye HPMC inogona kunyatso kupesvedzera hunhu hwesimba hwemasanganiswa evhu.
Kutanga, zvakakosha kuti unzwisise kuumbwa kwedhaka uye basa rezvakasiyana-siyana zvinongedzo pakuona simba rayo. Doka musanganiswa wesimende zvinhu (senge Portland simende), aggregates (sejecha), mvura, uye zvinowedzera. Kusimba kwedhaka kunonyanya kuenderana ne hydration ye simenti zvimedu, izvo zvinoumba matrix inosunga aggregates pamwechete. Nekudaro, zvinhu zvakati wandei, zvinosanganisira mvura-simende ratio, aggregate grading, uye kuvapo kwezvinowedzera, zvinogona kukanganisa zvakanyanya kukura kwesimba redhaka.
HPMC inowanzowedzerwa kumisanganiswa yedhaka sechinhu chinochengeta mvura uye chikobvu. Inovandudza kushanda nekusimudzira kubatana kwemusanganiswa, kuderedza kusagika kana kudonha, uye kubvumira kushandiswa kuri nani pane zvakati sandara. Pamusoro pezvo, HPMC inoumba firimu rakatenderedza simende zvimedu, izvo zvinobatsira mukuchengetedza mvura uye nekurebesa hydration yesimende, zvichitungamira mukuvandudzika kwesimba nekufamba kwenguva.
Imwe yedzakaoma nzira HPMC inokanganisa simba redhaka ndeyekudzikisa kurasikirwa kwemvura kuburikidza nekubuda mumhepo panguva yekumisikidza uye kurapa maitiro. Nekugadzira firimu rekudzivirira pamusoro pemasimende, HPMC inoderedza chiyero chemvura inoputika kubva mumusanganiswa wedhaka. Iyi yakareba hydration yemasimende masimende inogonesa kuzara uye yunifomu hydration, zvichikonzera denser uye yakasimba dhaka matrix. Nekuda kweizvozvo, madhaka ane HPMC anowanzo kuratidza epamusoro ekumanikidza uye kushanduka simba zvichienzaniswa neasina iwo, kunyanya pazera rinotevera.
Uyezve, HPMC inogona kuita seanoparadzira, ichisimudzira kugoverwa kweyunifomu yemasimende uye zvimwe zvinowedzera musanganiswa wedhaka. Uku kugovera yunifomu kunobatsira mukuzadzisa zvimiro zvesimba zvakachinjika pane yese batch yedhaka. Pamusoro pezvo, HPMC inogona kuvandudza kunamatira kwedhaka kune akasiyana substrates, senge masonry mayuniti kana mataira, zvichitungamira kune yakawedzera chisungo simba.
Nekudaro, zvakakosha kuti uzive kuti mhedzisiro yeHPMC pasimba redhaka inogona kusiyana zvichienderana nezvinhu zvakati wandei, zvinosanganisira dosi yeHPMC, mhando uye dosi yezvimwe zvekuwedzera zviripo mumusanganiswa, hunhu hwesimende uye aggregates anoshandiswa, mamiriro ekunze panguva yekusanganisa, kuisa, uye kurapa, pamwe chete nezvinodiwa chaizvo zvechishandiso chakatarisirwa.
Nepo HPMC ichiwanzo wedzera kusimba kwedhaka, kushandisa zvakanyanya kana dosi isina kunaka yeHPMC inogona kuva nemhedzisiro yakaipa. Kukwirisa kwakanyanya kweHPMC kunogona kutungamira kune yakawandisa mhepo kupinda, kuderedzwa kushanda, kana kunonoka kuseta nguva, izvo zvinogona kukanganisa kuita kwese kwedhaka. Naizvozvo, zvakakosha kuti unyatso funga nezve dosage yeHPMC uye zvimwe zvekuwedzera zvinoenderana nezvinodiwa zvepurojekiti uye kuita bvunzo dzakakwana kuti ukwidzise musanganiswa wedhaka kune inodiwa simba uye kuita.
Hydroxypropyl Methylcellulose (HPMC) inoita basa rakakosha mukuvandudza simba remisanganiswa yedhaka inoshandiswa mukuvaka zvikumbiro. Nekusimudzira kuchengetwa kwemvura, kushanda, uye kunamatira, HPMC inofambisa hydration yakawanda yemasimende, zvichikonzera denser uye akasimba matrices edhaka. Nekudaro, dosi chaiyo uye kutariswa kwezvimwe zvinosanganiswa zvinosanganisirwa zvakakosha kuti ushandise iyo yakazara mukana weHPMC uchidzivirira zvinogona kukanganisa. Pakazere, HPMC inoshanda sechinhu chakakosha chekuwedzera mukusimudzira mashandiro emusanganiswa wedhaka, ichipa kusimba uye kuvimbika kwemapurojekiti ekuvaka.
Nguva yekutumira: Jun-04-2024