Hydroxypropyl methylcellulose (HPMC) ndeyepamusoro-inoshanda yekuwedzera inoshandiswa zvakanyanya mukuvaka, kunyanya mukugadzira dhaka nemapurasita. HPMC is nonionic, water-soluble cellulose ether yakagadzirwa nekemikari yakagadziridzwa selulosi chaiyo. Iyo ine yakanakisa thickening, kuchengetedza mvura, lubricating uye firimu-kugadzira zvivakwa, izvo zvinotora basa rakakosha mukuvandudza kushanda, mashandiro emuchina uye kusimba kwedhaka uye plasters.
1. Kuvandudzwa kwekuita kwekuchengetedza mvura
Imwe yeanonyanya kuzivikanwa mhedzisiro yeHPMC ndeye yakanakisa yekuchengeta mvura zvivakwa. Mune madhaka uye plasters, HPMC inoderedza zvakanyanya mwero wekuti mvura inoputika, ichiwedzera nguva yakavhurika yematope uye plasters. Iyi pfuma yakakosha pakuvaka nekuti inoita kuti madhaka nemapurasita ane nguva yakakwana yekushanda panguva yekuisa, kudzivirira kutsemuka uye kusabatana kwakashata kunokonzerwa nekutanga kuoma. Mukuwedzera, kuchengetwa kwemvura kunovimbisa kukwana hydration ye simenti, nokudaro kuwedzera simba rekupedzisira rematope uye plasters.
2. Kuvandudzwa kwekushanda kwekuvaka
HPMC inovandudza zvakanyanya kushanda kwematope uye plasters. Nekuda kwekukora kwayo, HPMC inogona kuwedzera viscosity yedhaka, zvichiita kuti zvive nyore kuisa nekuisa. Izvi zvinonyanya kukosha pakuvaka madziro uye sirin'i, sezvo HPMC ichiita dhaka nemapurasita zvakanyanya kusaga, kuderedza njodzi yekudonha. Uye zvakare, iyo lubrication mhedzisiro yeHPMC inogona kuvandudza kuyerera kwedhaka uye kuiparadzira zvakaenzana pazvishandiso zvekuvaka, nekudaro ichivandudza kushanda kwekuvaka uye kunaka kwepamusoro.
3. Wedzera kunamatira
HPMC inovandudza kunamatira kwedhaka uye plasters, kunyanya pane inorganic substrates senge zvidhinha, kongiri nematombo. HPMC inonatsiridza kusimba kwesimende-yakavakirwa zvinhu nekusimudzira kuchengetedza kwemvura kwedhaka uye nekuwedzera iyo hydration reaction nguva yesimende. Panguva imwecheteyo, iyo firimu yakaumbwa neHPMC inogonawo kuwedzera iyo interface yekubatanidza simba pakati pedhaka uye nheyo yezvinhu, kudzivirira dhaka kubva pakudonha kana kuputika.
4. Kuvandudza kupesana kwekuputika
Kuwedzera HPMC kumadhaka uye plasters kunogona kuvandudza zvakanyanya kuramba kwavo kutsemuka. Nekuda kwekuchengetedza kwemvura kwakanakisa uye kukora zvimiro zveHPMC, dhaka rinogona kuramba rakanyorova kwenguva yakareba panguva yekuomeswa, kuderedza shrinkage yepurasitiki uye yakaoma shrinkage kuputika kunokonzerwa nekurasikirwa kwemvura yakawandisa. Mukuwedzera, chimiro chakanaka chakaumbwa neHPMC chinogonawo kuparadzira kushushikana, nekudaro kuderedza kuitika kwekutsemuka.
5. Kuvandudza chando-thaw resistance
HPMC zvakare inonatsiridza chando-thaw kuramba mumatope uye plasters. Iyo yekuchengeta mvura zvimiro zveHPMC inogonesa kugovera hunyoro mukati mematope uye plasters, kuderedza kutonhora-kunyorova kukuvadzwa kunokonzerwa nehunyoro. Pamusoro pezvo, iyo firimu inodzivirira yakaumbwa neHPMC inogona kudzivirira kupindira kwehunyoro hwekunze, nekudaro ichideredza kukuvadzwa kwezvinhu zvinokonzerwa nechando-thaw cycles uye kuwedzera hupenyu hwebasa rematope uye plasters.
6. Kuwedzera kusapfeka kupfeka
HPMC zvakare inonatsiridza kusamira kwekupfeka kwemateki uye plasters. Nekuwedzera kusimba kwechisungo uye density yedhizaini, HPMC inoita kuti pamusoro pechinhu chive chakasimba, ichideredza mukana wekupfeka uye kupepeta. Izvi zvinonyanya kukosha kune dhaka repasi uye ekunze madziro plasters, sezvo nzvimbo idzi dzinowanzo iswa pasi pekupfeka kukuru kwemuchina.
7. Kuvandudza kusapinda
HPMC inewo mhedzisiro yakanaka pakusapinda kwematope uye plasters. Iyo firimu-inogadzira zvimiro zveHPMC inoumba inoshanda isina mvura inovharira pane dhaka uye stucco nzvimbo, ichidzikisa hunyoro kupinda. Panguva imwecheteyo, HPMC inosimudzira kuwanda kwezvinhu, kuderedza mukati ma pores, nekudaro ichiwedzera kuvandudza impermeability kuita. Izvi zvinonyanya kukosha pakuvaka kudzivirira mvura uye hunyoro-proofing zvinodiwa.
8. Wedzera maawa ekuvhura
Nguva yekuvhurika inoreva nguva yekuti dhaka kana stucco inoramba iri mumamiriro ekushanda. HPMC inogona kunyatso wedzera nguva yekuvhura kuburikidza neayo ekuchengetedza mvura zvivakwa, izvo zvakakosha pakuvaka nzvimbo dzakakura kana kushanda mukupisa kwakanyanya uye kwakaoma nharaunda. Iyo yakawedzerwa nguva yekuvhura haingowedzere kuchinjika kwekuvaka asiwo inoderedza kukanganisa kwekuvaka kunokonzerwa nedhaka kana plaster kuoma nekukasira.
Kushandiswa kweHPMC mumadhaka uye plasters kunopa kuvandudzwa kwakakosha muhuwandu hwakawanda hwezvinhu izvi. Nekuwedzera kuchengetwa kwemvura, kuvandudza mashandiro ekuvaka, kuwedzera kunamatira, kuwedzera mutswe uye kutonhora-kunyungudika kuramba, nekuvandudza abrasion uye kusamira, HPMC inopa yakavimbika uye yakasimba mhinduro yezvinhu zvemazuva ano zvekuvaka. Kuvandudzwa kwekuita uku hakungoite kuti kuvaka kuve nyore uye kwakanaka, asiwo kunovimbisa kusimba kwenguva refu uye kugadzikana kwechivako pasi pemamiriro akasiyana ezvakatipoteredza. Naizvozvo, HPMC yave chinhu chakakosha uye chakakosha mudhaka uye stucco maumbirwo.
Nguva yekutumira: Sep-03-2024