Hydroxypropyl methylcellulose inoshandiswa se substrate yezvinhu zvisina kugadzirwa kugadzira mafuta, ayo anogona kuita kuti shuga yese ishandiswe, kuwedzera mwero wekushandiswa kwezvinhu zvisina kugadzirwa, kuderedza huwandu hwe substrate inosara mumuto wekuvirisa, uye kuderedza mutengo wekurapa mvura yakasviba. Iyi hydroxypropyl methylcellulose Hunhu hukuru hunobatsira pakugadzirisa maitiro e batch, fed-batch uye continuous fermentation, kudzivirira matambudziko akatevedzana akadai sekudzora medium composition uye dilution rate; inobatsirawo pakugadzirisa maitiro ekuvirisa.
Hydroxypropyl methylcellulose, iyo cellulose yakagadzirwa nesimbi, inogona kugadzirwa nedonje rakacheneswa kana kuti pulp yehuni. Zvakakosha kuipwanya isati yaiswa musimbi kana panguva yekupwanya. Kupwanya uku kunofanirwa kuparadza cellulose yakagadzirwa nesimbi nesimba remagetsi. Maumbirwo emhando ye cellulose macromolecules anogona kuderedza huwandu hwekristaro nepolymerization, kuwedzera nzvimbo yayo yepamusoro, nokudaro zvichivandudza kugona kwe reaction reagent kumapoka matatu ehydroxyl ari muboka re glucose ring re cellulose macromolecule.
Kunyangwe musimboti wekugadzira hydroxypropyl methylcellulose etherification usina kuoma, nzvimbo dzakasiyana-siyana dzealkalizing, kupwanya zvinhu zvisina kugadzirwa, etherification, kudzoreredza solvent, kupatsanurwa kwecentrifugal, kuwacha nekuomesa zvinosanganisira matekinoroji akawanda akakosha uye ruzivo rwakakura. Kune mhando dzakasiyana dzezvigadzirwa, nzvimbo yega yega ine mamiriro ekutonga matsva, akadai sekupisa, nguva, kumanikidzwa uye kudzora kuyerera kwezvinhu. Midziyo yekubatsira uye zvishandiso zvekudzora ivimbiso yakanaka yemhando yechigadzirwa yakagadzikana uye masisitimu ekugadzira akavimbika.
Sezvo mashandiro ehydroxypropyl methylcellulose akafanana nemamwe ma ether anonyungudika mumvura, inogona kushandiswa mupendi yelatex uye muzvinhu zvependi ye resin inonyungudika mumvura sechinhu chinoumba firimu, chinosimbisa, chinosimbisa uye chinosimbisa.
Ita kuti firimu rekuputira rive nekudzivirira kupfeka, kuenzana uye kunamira zvakanaka, uye kunatsiridza kusimba kwepamusoro, kugadzikana kune acid nealkali, uye kuenderana ne pigments dzesimbi. Hydroxypropyl methylcellulose ine simba rakanaka semushonga wekukora wependi chena ye polyvinyl acetate inobva mumvura. Mwero wekutsiva cellulose ether unowedzera, uye kuramba kuputika kwebhakitiriya kunowedzerwawo.
Nguva yekutumira: Zvita-22-2022