Iyo viscosity index yehydroxypropyl methylcellulose indekisi yakakosha. Iyo viscosity haimiriri kuchena. Iyo viscosity ye cellulose HPMC zvinoenderana nemaitiro ekugadzira. Nzvimbo dzakasiyana dzekushandisa dzinofanira kusarudza cellulose HPMC ine viscosities dzakasiyana, kwete iyo yakakwira viscosity ye cellulose HPMC, zviri nani! Zvakakodzera ndizvo.
Viscosity Control
1. Mukugadzirwa kwe-high-viscosity hydroxypropyl methylcellulose, chete vacuuming uye nitrogen replacement haigoni kubudisa zvakanyanya high cellulose. Kazhinji, kugadzirwa kwe-high-viscosity cellulose muChina hakugone kudzorwa. Zvisinei, kana mutsara weokisijeni mita unogona kuiswa muketero, kugadzirwa kweviscosity yayo kunogona kudzorwa nemaitiro.
Kushandiswa kwemumiriri wemubatanidzwa
2. Mukuwedzera, tichifunga nezvekutsiviwa kwe nitrogen, zviri nyore kugadzira zvigadzirwa zvepamusoro-viscosity pasinei nokuti inodzivirira sei mhepo. Ehe, dhigirii repolymerization yedonje rakanatswa rakakosha zvakare. Kana izvo zvisingashande, zviite ne hydrophobic association. Kune vamiriri vemasangano munzvimbo ino muChina. Ndeupi rudzi rwemubatanidzwa mumiriri wekusarudza ane simba guru pakuita kwechigadzirwa chekupedzisira.
Hydroxypropyl content
3. Okisijeni yakasara mu reactor inotungamirira mukuora kwe cellulose uye kuderera kwema molecular uremu. Zvisinei, kana iyo yakasara okisijeni ishoma, chero bedzi mamorekuru akaputsika akabatanidzwa zvakare, hazvisi zvakaoma kuita high viscosity. Nekudaro, iyo saturation rate ine zvakawanda zvekuita nezviri mukati mehydroxypropyl. Mamwe mafekitari anongoda kuderedza mutengo uye mutengo, asi haadi kuwedzera zvirimo zvehydroxypropyl, saka mhando haigone kusvika pamwero wezvigadzirwa zvekunze zvakafanana.
zvimwe zvinhu
4. Kuchengetedza kwemvura kwechigadzirwa kune hukama hukuru nehydroxypropyl, asi inotarisawo chiyero chekuchengetedza mvura, alkalization effect, chiyero chemethyl chloride uye propylene oxide, uye alkali concentration yehuwandu hwekuita. Zvose chiyero chemvura nekotoni yakanatswa inosarudza kushanda kwechigadzirwa.
Nguva yekutumira: Kubvumbi-03-2023