Hydroxypropyl methylcellulose (HPMC) mudhaka rakanyorova-musanganiswa

Basa reHPMC mudhaka rakanyorova rakasanganiswa

Wet-musanganiswa dhaka simende, yakanaka aggregate, musanganiswa, mvura uye akasiyana mativi akatemerwa maererano nekuita. Zvinoenderana nechimwe chikamu, mushure mekuyerwa nekusanganiswa muchiteshi chekusanganisa, chinotakurwa kuenda kunzvimbo inoshandiswa nerori yekusanganisa, uye kuiswa mune yakakosha Musanganiswa wemvura unochengetwa mumudziyo uye unoshandiswa mukati menguva yakatarwa.

Hydroxypropyl methylcellulose inoshandiswa sechinhu chinodzivirira kune simende slurry uye seretarder kuita kuti slurry ipombwe. Hydroxypropyl-Methyl Cellulose HPMC Cellulose's moisturizing kugona semhinduro ye viscous inowedzera kushanda kwedab uye inowedzera nguva yekushanda. Izvi zvinobvumira kuti sesame isatsemuka nekukurumidza mushure mekuzora uye kuwedzera simba mushure mekuoma. . Hydrochloric acid kuita kwakakosha kweHPMC kuita hydrolyze cellulose, uye inogadzira mapulp akawanda muChina. Zvinhu zvinokanganisa wet slurry zvinosanganisira HPMC yekuwedzera huwandu, HPMC viscosity, particle fineness uye ambient tembiricha.

Basa rakakosha reHPMC mukusanganiswa kwemvura rinonyanya kuratidzwa muzvikamu zvitatu: imwe yakanaka yekuchengetedza mvura, imwe ndiyo pesvedzero yekusagadzikana uye manzwiro deformation yekunyorova musanganiswa, uye imwe ndiyo yekudyidzana nesamende. Huwandu hwe cellulose ether hunoenderana nekutorwa kwemvura ne substrate, kuumbwa kwejecha, ukobvu hwemutsetse, kudiwa kwemvura mumhinduro, uye nguva yekukonyedza kwechinhu.

Kuchengetedza hunyoro zvinhu zvinokanganisa hydrolyzed cellulose zvinosanganisira pulp viscosity, huwandu hwekuwedzera, hunyoro uye tembiricha. Kana iyo cellulose ether yakakora, zviri nani kudzivirira mvura. Viscosity chinhu chakakosha kuita parameter yeHPMC. Pachigadzirwa chimwe chete, mhedzisiro yeviscosity yakayerwa nenzira dzakasiyana inosiyana zvakanyanya, uye vamwe vanotosvika kufambira mberi kwejometri. Naizvozvo, kuenzanisa viscosities, inofanirwa kuitwa pakati peiyo nzira dzekuyedza, kusanganisira tembiricha, spindle, nezvimwe.

Kazhinji kutaura, iyo yakakwirira viscosity, zviri nani kuita kusapinda kwemvura. Asi iyo yakakura kuwedzera kwe viscosity, HPMC, iyo yakakwira molecular uremu, yakaderera iyo solubility zvivakwa, mhinduro yakasimba, uye zvivakwa zvinokanganiswa. Iyo yakakwirira iyo viscosity, zviri nani iyo thickening mhedzisiro mumhinduro, asi isingaenderane zvakananga nereshiyo. Iyo yakakwirira iyo viscosity, iyo yakanyorova uye yakawanda viscous mhinduro, kana ichivaka, inoratidza kupikisa kwakanyanya pamberi pemashizha anonamira uye zvinhu. Asi kuwedzera simba rekugadzirisa kune dhaka rakanyorova pacharo hazvibatsiri. Pakavakwa zvivako zviviri izvi, zvakaonekwa kuti anti-mosquito basa rakanga risipo. Kusiyana neizvi, imwe yakaderera-viscosity post-modified methacrylic acid, nepo cellulose inovandudza nyoro mhinduro uye kusimba kwechimiro, ine yakanakisa zvivakwa.