Ingaruka yibyibushye ya hydroxypropyl methylcellulose

Hydroxypropyl methylcelluloseHPMCitanga minisiteri itose hamwe nubwiza buhebuje, bushobora kongera cyane gufatana hagati yubutaka butose nigitereko fatizo, no kunoza imikorere yo kurwanya kugabanuka. muri minisiteri. Ingaruka yibyibushye ya selile ya selile irashobora kandi kongera ubushobozi bwa homogeneity hamwe no kurwanya-gukwirakwiza ibikoresho bishya bishingiye kuri sima, bikarinda gusibanganya, gutandukanya no kuva amaraso ya minisiteri na beto, kandi birashobora gukoreshwa muri beto ikomezwa na fibre, beto yo mumazi no kwikuramo. beto.

Hydroxypropyl methylcellulose yongerera ubwiza bwibikoresho bishingiye kuri sima bivuye mubwiza bwa selile ya ether. Ubukonje bwa selulose ether igisubizo mubisanzwe bisuzumwa nurutonde "viscosity". Ubukonje bwa ether ya selulose muri rusange bivuga kwibanda ku kintu runaka (nka 2%) cyumuti wa selile ya selile ku bushyuhe bwagenwe (nka 20 ° C) no kogosha Agaciro ka viscosity gipimwa nigikoresho cyapimwe (nka viscometer izenguruka) munsi yumuvuduko (cyangwa igipimo cyo kuzunguruka, nka 20 rpm).

Viscosity nikintu cyingenzi cyo gusuzuma imikorere ya selile ether. Iyo hejuru ya hydroxypropyl methylcellulose yumuti, niko ubwiza bwibintu bishingiye kuri sima, niko gufatira hamwe na substrate, niko ubushobozi bwo kurwanya kugabanuka no kurwanya gutatanya. Birakomeye, ariko niba ububobere bwayo ari bunini cyane, bizagira ingaruka kumikorere no mikorere yibikoresho bishingiye kuri sima (nko gufatisha ibyuma byo 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, ingaruka ziterwa na hydroxypropyl methylcellulose yongerera amazi amazi ibikoresho bishingiye kuri sima, bityo byongera umusaruro wa minisiteri.

Ubukonje bwa hydroxypropyl methylcellulose igisubizo biterwa nimpamvu zikurikira:

Uburemere bwa selile ya selile (cyangwa urwego rwa polymerisiyasi) hamwe no kwibanda, ubushyuhe bwumuti, igipimo cyogosha, nuburyo bwo gupima.

1.

2. Iyo dosiye (cyangwa concentration) ya selulose ether, niko ubukana bwumuti wamazi wabwo, ariko hagomba kwitonderwa guhitamo dosiye ikwiye mugihe uyikoresheje, kugirango wirinde urugero rukabije kandi bigira ingaruka kumikorere ya minisiteri. na beto;

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

4. Ibisubizo bya Cellulose ether mubisanzwe ni pseudoplastique ifite imitsi yogosha. Kurenza igipimo cyogosha mugihe cyikizamini, niko kugabanuka kwijimye.

Kubwibyo, guhuriza hamwe kwa minisiteri bizagabanuka bitewe nigikorwa cyingufu zo hanze, zifitiye akamaro iyubakwa rya minisiteri, kugirango minisiteri ibashe gukora neza no guhuriza hamwe icyarimwe. Nyamara, iyo kwibumbira hamwe kwa selile ya ether yumuti ari muke cyane kandi viscosity ni nto cyane, bizerekana ibiranga amazi ya Newtonian. Iyo kwibumbira hamwe byiyongereye, igisubizo kizagenda cyerekana buhoro buhoro ibiranga amazi ya pseudoplastique, hamwe nubunini bwinshi, niko bigaragara pseudoplastique.