Ndezvipi zvinhu zve hydroxyprupyl methyl cellelose uye hydroxytHyl cellulose?

1.hydroxypronyLl methyl cellulose

Hydroxypruppropyl methylcelloseIyo cellulose akasiyana-siyana ayo anobuda uye kushandiswa kuri kuwedzera nekukurumidza. Icho chisiri-ionic cellulose yakasanganiswa ether yakagadzirwa kubva kukotoni yakanatswa mushure mekunge alkalization, kushandisa profyl Iyo degree rekutsiva kazhinji 1.2 ~ 2.0. Zvivakwa zvayo zvinosiyana zvichienderana nehuremu hwezvemukati medu kune hydroxyprupyl zvemukati.

(1. Asi tembiricha yayo yegungwa mumvura inopisa yakakwirira zvakanyanya kupfuura iyo ye methyl cellulose. Iyo solubility mumvura inotonhora inovandudzwa zvakare yakaenzaniswa ne methyl cellulose.

. Tembiricha inokanganisawo zvavakaita, sekuwedzera kwekuwedzera, viscosity inoderera. Nekudaro, pesvedzero yeiyo yepamusoro viscosity uye tembiricha yakaderera pane iyo ye methyl cellulose. Kugadziriswa kwayo kwakasimba kana kuchengetwa pamhepo tembiricha.

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. Caustic soda uye lime mvura ine zvishoma kushanda pane zvayo kuita, asi Alkali inogona kukurumidza kukurumidza kupaza mwero uye zvishoma kuwedzera viscosity yayo. Hydroxyprupyl methylcellose yakachengetwa kune zvakajairika kumaronda, asi kana kusungwa kwemhinduro kwakakwirira, iyo visikopa yehydroxyproslose mhinduro inowanzowedzera kuwedzera.

. Senge polyvinyl doro, starch ether, miriwo gamu, nezvimwe.

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2. HydroxytHyl Cellulose

Izvo zvinogadzirwa kubva pakunyatsonatswa? Degree rayo rekutsiva kazhinji 1.5 ~ 2.0. Iyo ine hydrophilikuti yakasimba uye iri nyore kutora unyoro.

(1. Kugadziriswa kwayo kwakasimba pakupisa kwakanyanya pasina gomba. Inogona kushandiswa kwenguva yakareba iri pasi pekupisa kwakanyanya mudhaka, asi kuchengetwa kwemvura kwayo kwakaderera pane iyo ye methyl cellulose.

(2)HydroxytHyl CelluloseYakagadzikana kuGeneral Acid naAlkali, naAlkali vanogona kusimudzira kupaza kwayo uye zvishoma kuwedzera zvavakaita. Kupararira kwayo mumvura kuri kuipa zvishoma pane iyo ye methyl cellulose uye hydroxypruppropyl methyl cellulose.

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(5. Pakushambadzira kweanenge 40 ° C, nyoro inogona kuitika mukati memazuva matatu kusvika mashanu, iyo ichakanganisa kuita kwayo.