Hydroxypropyl methylcellulose (HPMC) chinhu chinoshandiswa zvakanyanya muindasitiri yekuvaka nekuda kwekunaka kwayo kwekuchengetedza mvura. Mukuvaka zvikumbiro senge simende plasters, plasters uye mataira anonamira, kuchengetedza mvura kwakakosha pakuita kwakanyanya uye kushanda nesimba.
Seimwe yezvinhu zvakakosha zveHPMC, kuchengetwa kwemvura kwakanangana neiyo viscosity yezvinhu. Iyo yakakwirira viscosity yeHPMC, zviri nani kuchengetedza kwayo mvura. Ichi chivakwa chinoita kuti HPMC ive inofarirwa zvinhu sarudzo yekuvaka nekuvaka nyanzvi.
Kuchengetedzwa kwemvura kwakakosha mukuvaka sezvo zvichiva nechokwadi chekuti zvinhu zvinoshandiswa zvinochengeta kuwirirana kunyangwe pakaoma. Semuyenzaniso, mune simende renders kana plasters, kuchengetwa kwemvura kunodzivirira zvinhu kubva pakutsemuka, kukanganisa kutendeseka kwechimiro. Saizvozvo, mukugadzirisa mataira, kuchengetwa kwemvura kunobatsira kuve nechokwadi chekuti tile inonamatira inobatirira kune substrate. Ese maapplication aya anovimba neHPMC kuti ipe yakakwana kuchengetedza mvura kuitira kuita kwakanyanya.
Kana HPMC ichishandiswa sechinhu chekuvaka, inobatsira kudzora hunyoro uye inovimbisa kuti hapana kurasikirwa nehunyoro kuburikidza nekuoma nguva isati yakwana. Izvi zvakakosha kune stucco kana kupa maapplication, sezvo zvinhu zvinoomesa nekukasira zvinogona kutsemuka uye zvinogona kukonzera kukanganisa kwechimiro. Kugona kweHPMC kukwidziridza kuchengetwa kwemvura kunobatsira kuchengetedza hunyoro hunoenderana mukati mekuita kwekushandisa, zvichibvumira kuti zvinhu zviome zvakaenzana pasina kukuvadza.
Iyo yakakwirira viscosity yeHPMC inoguma mune yakakora mhinduro, iyo inobatsira kuvandudza yayo yekuchengeta mvura zvivakwa. Kuenderana kweHPMC kunovimbisa kuti zvinhu zvacho zvinoramba zviri pamusoro kwenguva yakati rebei, nekudaro zvichichengetedza hunyoro hwayo. Pamusoro pezvo, iko kusimba kunoenderana kunononoka kubuda, kuve nechokwadi chekuti zvinhu zvacho zvinowoma zvishoma nezvishoma uye zvinogara kuitira kupedzisa kwemhando yepamusoro.
Pamusoro peakanakisa ekuchengetedza mvura zvivakwa, HPMC's high viscosity inobatsirawo pakuyerera kwayo, kusimba kwebhondi uye processability. High viscosity HPMC inopa zviri nani kuyerera mazinga, zvichiita kuti zvive nyore kuparadzira uye kubata pamusoro pepamusoro pairi kurapwa. Yakakwira-viscosity HPMC zvakare ine nani yekunamira simba, ichiita kuti iwedzere kusungirirwa kune substrate uye inosimudzira kuita kwese kwechinyorwa.
Kana ichishandiswa mumatairi ekushandisa, HPMC inosimudzira kushanda kwematairi anonamira, achiita kuti arambe achipokana nekufamba uye kusanyanya kuputika. Izvi zvakanyanya kukosha munzvimbo dzinotarisirwa kufamba kwezvimiro, senge mabhiriji, migwagwa mikuru, uye zvimwe zvivakwa zveveruzhinji.
HPMC chinhu chakakosha muindastiri yekuvaka nekuda kweakanakisa ekuchengetedza mvura zvivakwa zvinotungamira kumhando yepamusoro kupera. Iyo yakakwira viscosity yeHPMC inokwidziridza zvivakwa zvayo zvekuchengeta mvura, chiyero chekuyerera, kusimba kwechisungo uye kugadzirisa, zvichiita kuti ive yakakodzera kune dzakasiyana siyana dzekushandisa muindasitiri yekuvaka, kusanganisira simende render, plasters uye mataira anonamira. Kuita kwayo kwepamusoro mumabasa ekuvaka kunovimbisa kuti zvivakwa uye zvimiro zvinomira muyedzo wenguva, zvichiwedzera kuchengetedzwa, kushanda uye kusimba kwenzvimbo yakavakirwa.
Nguva yekutumira: Sep-05-2023