Ingaruka yibyibushye ya hydroxypropyl methylcellulose

Hydroxypropyl methylcellulose itanga minisiteri itose hamwe nubwiza buhebuje, bushobora kongera cyane ubushobozi bwo guhuza hagati ya minisiteri itose hamwe nigitereko fatizo, kandi bikanoza imikorere ya anti-sag ya minisiteri. Ikoreshwa cyane muguhomesha minisiteri, sisitemu yo gukingira urukuta rwo hanze no guhuza amatafari muri minisiteri. Ingaruka yibyibushye ya selile ya selile irashobora kandi kongera ubushobozi bwa homogeneity hamwe no kurwanya-gukwirakwiza ibikoresho bishya bivanze na sima, bikarinda gusibanganya, gutandukanya no kuva amaraso ya minisiteri na beto, kandi birashobora gukoreshwa muri beto ya fibre, beto yo mumazi no kwikuramo beto. .

Hydroxypropyl methylcelluloseHPMCbyongera ubwiza bwibikoresho bishingiye kuri sima biva mubwiza bwa selile ether igisubizo. Ironderero rya "viscosity" mubusanzwe rikoreshwa mugusuzuma ubwiza bwa selile ether igisubizo. Ubukonje bwa ether ya selile muri rusange bivuga igisubizo cya selile ya ether hamwe nibitekerezo bimwe (nka 2%). Umuvuduko (cyangwa igipimo cyo kuzunguruka, nka 20 rpm), agaciro ka viscosity gupimwa nigikoresho cyapimwe cyagenwe (nka viscometer izenguruka).

Viscosity nikintu cyingenzi cyo gusuzuma imikorere ya selile ether. Iyo hejuru yubusembwa bwa hydroxypropyl methylcellulose, niko ubwiza bwibikoresho bishingiye kuri sima, niko gufatira hamwe na substrate, hamwe nubushobozi bwo kurwanya kugabanuka no kurwanya gutatanya. Mukomere, ariko niba ububobere bwayo ari bunini cyane, bizagira ingaruka kumikorere no mumikorere yibikoresho bishingiye kuri sima (nko gutera icyuma cyo guhomesha mugihe cyo kubaka amabuye ya minisiteri). Kubwibyo, ubwiza bwa selile ya selile ikoreshwa muri minisiteri yumye ivanze ni 15,000 ~ 60.000 mPa. S.

Byongeye kandi, umubyibuho ukabije wa hydroxypropyl methylcellulose uzamura amazi y’ibikoresho bishingiye kuri sima, bityo byongere umusaruro wa minisiteri.

Ubukonje bwa hydroxypropyl methylcellulose ibisubizo biterwa nimpamvu zikurikira:

Uburemere bwa molekuline (cyangwa urwego rwa polymerisiyasi) hamwe nubushuhe bwa selile ya selile, ubushyuhe bwumuti, igipimo cyogukoresha nuburyo bwo gupima.

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2. Iyo hejuru ya dosage (cyangwa concentration) ya selile ya ether, niko hejuru yubukonje bwumuti wamazi wacyo, ariko hagomba kwitonderwa guhitamo dosiye ikwiye mugihe uyikoresheje, kugirango bitagira ingaruka kumikorere ya minisiteri na beto niba the dosiye ni ndende cyane;

3. Kimwe n’amazi menshi, ubwiza bwumuti wa selile ether bizagabanuka hamwe no kwiyongera kwubushyuhe, kandi nubushuhe bwa selile ya selile, niko ingaruka zubushyuhe ninshi;

4. Cellulose ether igisubizo mubisanzwe ni pseudoplastique, ifite umutungo wo kogosha. Ninshi igipimo cyogosha mugihe cyikizamini, niko kugabanuka kwijimye.

Kubwibyo rero, guhuriza hamwe kwa minisiteri bizagabanuka bitewe nimbaraga zo hanze, zifitiye akamaro ko kubaka ibisasu bya minisiteri, kugirango minisiteri ibashe gukora neza no guhuriza hamwe icyarimwe. Nyamara, umuti wa selulose ether uzagaragaza ibiranga amazi ya Newtonian mugihe intumbero iba mike cyane kandi viscosity ni nto. Iyo kwibandaho kwiyongera, igisubizo kizagenda kigaragaza buhoro buhoro ibiranga amazi ya pseudoplastique, kandi nubunini bwinshi, niko bigaragara pseudoplastique.