Iyo yakakura viscosity yeHPMChydroxypropyl methyl cellulose, zviri nani kuchengetedza mvura kuita. Viscosity yakakosha parameter yeHPMC performance. Parizvino, vagadziri vakasiyana HPMC vanoshandisa nzira dzakasiyana uye zviridzwa kuona viscosity yeHPMC. Nzira huru ndeyeHaake Rotovisko, Hoppler, Ubbelohde uye Brookfield, nezvimwewo.
Pachigadzirwa chimwe chete, mhedzisiro yeviscosity yakayerwa nenzira dzakasiyana zvakasiyana zvakanyanya, zvimwe zvakatowanda misiyano. Naizvozvo, kana uchienzanisa viscosity, inofanirwa kuitwa pakati peiyo nzira yekuyedza, kusanganisira tembiricha, rotor, nezvimwe.
Pakukura kwechidimbu, kutsetseka kwechikamu, kunova nani kuchengetedza mvura. Zvimedu zvakakura zve cellulose ether kusangana nemvura, iyo yepamusoro inonyungudika pakarepo uye inogadzira gel yekuputira zvinhu kudzivirira mamorekuru emvura kuti arambe achipinda, dzimwe nguva nguva yakareba ichikurudzira haigone kuparadzaniswa zvakaenzana kunyungudika, kuumbwa kwedhaka flocculent mhinduro kana agglomerate. Kunyungudika kwe cellulose ether chimwe chezvinhu zvekusarudza cellulose ether. Fineness zvakare yakakosha kuita index yemethyl cellulose ether. MC yedhaka yakaoma inoda hupfu, mvura yakaderera, uye kunaka kwe20% ~ 60% particle size isingasviki 63um. Fineness inokanganisa solubility yeHPMChydroxypropyl methyl cellulose ether. Coarse MC inowanzoita granular uye inogona kunyungudika nyore nyore mumvura isina agglomerating, asi iyo yekunyungudika inononoka, saka haina kukodzera kushandiswa mudhaka rakaoma. Mudhaka rakaoma, MC inoparadzirwa pakati peaggregate, yakanaka mafirita uye simende zvinhu zvakaita sesimende, uye chete hupfu hwakakwana hunogona kudzivirira clumping yemethyl cellulose ether kana ichisanganiswa nemvura. Kana MC ichiwedzera mvura kunyungudutsa agglomerate, zvinonetsa kuiparadzira nekuinyungudutsa. MC ine coarse fineness kwete chete tsvina, asiwo inoderedza simba remunharaunda yedhaka. Kana dhaka rakaoma rakadaro richivakwa munzvimbo yakakura, kukurumidza kuporesa kwedhaka rakaoma remunharaunda rinoderedzwa zvakanyanya, zvichiita kuti kuputika kunokonzerwa nenguva yakasiyana yekurapa. Kune mechanical spraying mortar, nekuda kwenguva pfupi yekusanganiswa, kunaka kwakakwirira.
Kazhinji kutaura, iyo yakakwirira viscosity, zviri nani kuchengetedza mvura. Nekudaro, iyo yakakwira viscosity ndeye, iyo yakakwira molecular huremu hweMC, uye kunyungudika kwekuita kunoderera zvinoenderana, izvo zvine kukanganisa kwakashata pakusimba uye kuita kwekuvaka kwedhaka. Iyo yakakwirira viscosity, iyo inonyanya kuoneka iyo thickening mhedzisiro yedhaka, asi haina kuenzana nehukama. Iyo yakakwirira iyo viscosity, iyo yakanyorova dhaka ichave yakanyanya kunamira, zvese kuvaka, kuita kweiyo inonamira scraper uye yakakwirira kunamatira kune base zvinhu. Asi hazvibatsiri kuwedzera simba rekugadzirisa dhaka rakanyorova. Panguva yekuvaka, iyo anti-sag performance haisi pachena. Pane zvinopesana, imwe yakaderera viscosity asi yakagadziridzwa methyl cellulose ethers ine yakanakisa mashandiro mukuvandudza kusimba kwechimiro chedhaka rakanyorova.
Iyo yakawanda cellulose ether inowedzerwa kune dhaka, zviri nani kuchengetedza mvura kuita, iyo yakakwirira viscosity, zviri nani kuchengetedza mvura kuita.
HPMC fineness inewo imwe mhedzisiro pakuchengetedza kwayo mvura, kazhinji kutaura, kune yakafanana viscosity uye kwakasiyana fineness yemethyl cellulose ether, kana iri iyo yakaenzana huwandu hwekuwedzera, iyo yakatsetseka iyo yekuchengeta mvura mhedzisiro iri nani.
Kuchengetwa kwemvura kweHPMC kwakabatanawo nekupisa kwekushandisa, uye kuchengetwa kwemvura kwemethyl cellulose ether kunodzikira nekukwira kwekushisa. Asi mune chaiyo yekushandiswa kwezvinhu, nharaunda zhinji dzedhaka rakaoma kazhinji dzinove mukupisa kwakanyanya (kupfuura madhigirii makumi mana) pasi pemamiriro ekuvaka munzvimbo inopisa substrate, senge zhizha insolation yekunze kwemadziro putty plastering, iyo yaiwanzo mhanyisa kusimba kwesimende uye yakaoma dhaka kuoma. Kuderera kwehuwandu hwekuchengetedza mvura kunotungamira kune manzwiro ari pachena ekuti zvese zvekuvaka uye kutsemuka kuramba zvinokanganiswa. Mumamiriro ezvinhu aya, kuderedza simba rekushisa kwezvinhu zvinonyanya kukosha. Kunyangwe iyo yekuwedzera yemethyl hydroxyethyl cellulose ether ichionekwa seiri pamberi pekuvandudza tekinoroji, kutsamira kwayo patembiricha kucharamba kuchitungamira mukuderera kwezvivakwa zvedhaka rakaoma. Kunyangwe nekuwedzera kwemethyl hydroxyethyl cellulose dosage (yezhizha fomula), kuvaka uye kuputika kuramba kuchiri kusakwanisa kuzadzisa zvinodiwa zvekushandisa. Kuburikidza nekumwe kurapwa kwakakosha kweMC, sekuwedzera dhigirii reetherification, iyo yekuchengeta mvura mhedzisiro yeMC inogona kuchengetedza iri nani mhedzisiro pasi pekupisa kwakanyanya, kuitira kuti igone kupa kushanda kuri nani pasi pemamiriro akaomarara.
Nguva yekutumira: May-18-2022