Hydroxypropyl methylcellulose (HPMC) ndeyepamusoro-inoshanda yekuwedzera inoshandiswa zvakanyanya mukuvaka, kunyanya mukugadzira gypsum-based plasters uye gypsum zvigadzirwa.
(1) Basic zvimiro zveHPMC
HPMC is nonionic cellulose ether inowanikwa kuburikidza nemethylation uye hydroxypropylation reactions. Hunhu hwayo hukuru hunosanganisira kunyungudika kwemvura yakakwira, yakanakisa thickening zvivakwa, yakagadzikana makemikari ehupfumi uye yakanaka yekugadzira firimu. Izvi zvivakwa zvinoita kuti HPMC ishandiswe zvakanyanya mukuvaka zvinhu.
(2) Kushandiswa kweHPMC mune gypsum-based plaster
1. Kukora mumiririri basa
Mune gypsum-based plaster, HPMC inonyanya kushandiswa seyakakora mumiriri. Yayo yakanaka kunyungudika kwemvura uye kukora zvivakwa zvinogona kuvandudza zvakanyanya viscosity uye kugadzikana kwestucco, kudzivirira delamination uye kunaya kwemvura, nekudaro kunatsiridza kuita kwekuvaka uye kupera kwemhando yechigadzirwa.
2. Kuchengeta mvura
HPMC ine yakanakisa kuchengetedza mvura uye inogona zvinobudirira kuderedza kurasikirwa nekukurumidza kwemvura. Mune gypsum-based plasters, ichi chivakwa chinobatsira kuwedzera kushanda uye kugadzirisa mhedzisiro yekuvaka uku ichidzivirira kutsemuka uye kupfupisa kunokonzerwa nekukurumidza kubuda kwemvura.
3. Kuwedzera kunamatira
HPMC inogona kuwedzera kunamatira pakati pepurasita uye substrate. Izvi zvinodaro nekuti iyo firimu yakaumbwa neHPMC mushure mekuomeswa ine imwe dhigirii yekuchinjika uye kunamatira, nekudaro inovandudza simba rekubatanidza pakati pepurasita nemadziro kana mamwe ma substrates uye kudzivirira kuti irege kudonha.
(3) Kushandiswa kweHPMC mune zvigadzirwa zvegypsum
1. Kuvandudza kushanda kwekugadzirisa
Mukugadzira zvigadzirwa zvegypsum, HPMC inogona kuvandudza kuyerera uye kufanana kweiyo slurry, kuderedza kugadzirwa kwemabhuru, uye kuita kuti chigadzirwa chiwedzere uye chiwedzere kufanana. Panguva imwecheteyo, iyo thickening mhedzisiro yeHPMC inobatsira kugadzira yakapfava yakapfava pamusoro pechigadzirwa uye inovandudza kutaridzika kwemhando yechigadzirwa.
2. Kuvandudza kupesana kwekuputika
Kuchengetedzwa kwemvura kweHPMC mune zvigadzirwa zvegypsum kunobatsira kudzora kuburitswa kwemvura uye kuderedza kushushikana kwemukati kunokonzerwa nekusaenzana kwemvura evaporation, nekudaro kunatsiridza kuputika kwekudzivirira uye kusimba kwese kwechigadzirwa. Kunyanya munzvimbo dzakaoma, iyo yekuchengetedza mvura mhedzisiro yeHPMC inonyanya kukosha uye inogona kudzivirira zvinobudirira kuputika kwekutanga kwezvigadzirwa.
3. Kuvandudza zvinhu zvemagetsi
Iyo yakaenzana yakagovaniswa fiber network yakaumbwa neHPMC mune gypsum zvigadzirwa inogona kuvandudza kuoma uye kukanganisa kuramba kwezvigadzirwa. Ichi chimiro chinoita kuti zvigadzirwa zvegypsum zvisanyanya kukuvara panguva yekufambisa uye kuisa, kuwedzera hupenyu hwavo hwesevhisi.
(4) Zvakanakira zvekushandisa zveHPMC
1. Kuvandudza kushanda kwekuvaka
Nekuti HPMC inonatsiridza kushanda uye kuvaka mashandiro egypsum-based plaster uye gypsum zvigadzirwa, maitiro ekuvaka ari munyoro uye anoshanda zvakanyanya, achidzikisa huwandu hwekugadzirisa nekugadzirisa, nekudaro kuvandudza kugona kwekuvaka kwese.
2. Kuchengetedzwa kwezvakatipoteredza uye kuchengeteka
Sezvinhu zvechisikigo, HPMC haiburitse zvinhu zvinokuvadza panguva yekugadzirwa kwayo uye kushandiswa, uye inosangana nekuchengetedzwa kwezvakatipoteredza uye kuchengetedza zvinodiwa. Mukuwedzera, HPMC haisununguri magasi anokuvadza panguva yekushandiswa, zvichiita kuti ive yakachengeteka kune vashandi vekuvaka uye vashandi vekupedzisira.
3. Zvikomborero zveupfumi
Iko kushandiswa kweHPMC kunogona kuvandudza zvakanyanya mashandiro uye kunaka kwegypsum-based materials, nekudaro kuderedza marara emidziyo uye mutengo wekugadzirisa zvakare nekuvandudza mabhenefiti ehupfumi. Panguva imwecheteyo, hukuru hwepamusoro hweHPMC hunoita kuti migumisiro yakakosha iwanikwe kunyange nehuwandu hwekuwedzera, uye ine mari yakanaka yekuita.
Sechinhu chakakosha chekuwedzera zvinhu zvekuvaka, HPMC ine zvakakosha mukushandiswa kwayo mune gypsum-based plaster uye gypsum zvigadzirwa. Iyo yakanakisa kukora, kuchengetedza mvura uye zvisungo zvekubatanidza hazvisi kungovandudza kuita kwekuvaka kwechinhu uye kunaka kwechigadzirwa chakapedzwa, asi zvakare kunatsiridza mabhenefiti ehupfumi uye kuchengetedza kwezvakatipoteredza. Sezvo kudiwa kweindasitiri yekuvaka kwepamusoro-kuita, zvinhu zvine hushamwari kwezvakatipoteredza zvichiwedzera, tarisiro yekushandiswa kweHPMC mune gypsum-based zvinhu inozowedzera.
Nguva yekutumira: Jul-25-2024