Hydroxypropyl methylcellulose HPMC inogona kuvandudza zvakanyanya kuchengetwa kwemvura kwedhaka. Kana huwandu hwekuwedzera huri 0.02%, huwandu hwekuchengetedza mvura huchawedzerwa kubva pa83% kusvika 88%; huwandu hwekuwedzera i0.2%, huwandu hwekuchengetedza mvura i97%. Panguva imwecheteyo, shoma shoma yeHPMC inoderedzawo zvakanyanya stratification uye kubuda ropa kwedhaka, izvo zvinoratidza kuti HPMC haigoni kungovandudza kuchengetwa kwemvura yedhaka, asiwo inovandudza zvakanyanya kubatana kwedhaka, iyo inonyanya kuvandudza. inobatsira pakufanana kwemhando yekuvaka dhaka.
Nekudaro, hydroxypropyl methylcellulose HPMC ine imwe mhedzisiro yakaipa pane inoshanduka simba uye inomanikidza simba redhaka. Nekuwedzera kwekuwedzera kwehuwandu hweHPMC, iyo flexural simba uye kumanikidza simba redhaka zvishoma nezvishoma zvinodzikira. Panguva imwecheteyo, HPMC inogona kuwedzera simba rekusimba redhaka. Kana huwandu hweHPMC huri pasi pe0.1%, iyo tensile simba redhaka rinowedzera nekuwedzera kweHPMC dosage. Kana iyo chiyero ichipfuura 0.1%, iyo tensile simba haizowedzera zvakanyanya. Hydroxypropyl Methyl
Cellulose HPMC inowedzerawo kusimba kwechisungo chedhaka. Iyo 0.2% HPMC yakawedzera bond simba redhaka kubva 0.72 MPa kusvika 1.16 MPa.
Zvidzidzo zvakaratidza kuti HPMC inogona kuwedzera zvakanyanya nguva yekuvhura yedhaka, kuitira kuti huwandu hwekudonha kwedhaka huderedze zvakanyanya, izvo zvinobatsira kwazvo pakuvaka mataira bonding. Kana iyo HPMC isingabatanidzwe, simba rechisungo redhaka rakaderedzwa kubva ku0.72 MPa kuenda ku0.54 MPa mushure me20mins, uye kusimba kwechisungo chedhaka ne0.05% uye 0.1% HPMC ichave yakaparadzana 0.8 MPa uye 0.84 MPa mushure me20mins. Kana iyo HPMC isina kusanganiswa, kutsvedza kwedhaka ndeye 5.5mm. Nekuwedzera kweiyo HPMC yemukati, iyo slippage icharamba ichidzikira. Kana iyo dosi iri 0.2%, kutsvedza kwedhaka kunoderedzwa kusvika 2.1mm.
Nguva yekutumira: Mar-03-2022