Nibihe bintu bigira ingaruka kumazi ya hydroxypropyl methylcellulose

Hejuru ya viscosity yahydroxypropyl methylcellulose, ibyiza byo gufata neza amazi. Viscosity nikintu cyingenzi cyimikorere ya HPMC. Kugeza ubu, abakora HPMC batandukanye bakoresha uburyo nibikoresho bitandukanye kugirango bapime ubwiza bwa HPMC. Uburyo nyamukuru ni Haake Rotovisko, Hoppler, Ubbelohde na Brookfield.

Kubicuruzwa bimwe, ibisubizo bya viscosity byapimwe nuburyo butandukanye biratandukanye cyane, ndetse bimwe bikubye kabiri itandukaniro. Kubwibyo, mugihe ugereranije viscosity, menya neza kubikora hagati yuburyo bumwe bwikizamini, harimo ubushyuhe, rotor, nibindi.

Kubunini buke, nibyiza cyane, niko gufata amazi neza. Nyuma yuko uduce twinshi twa selulose ether duhuye namazi, hejuru irahita ishonga kugirango ikore jel, ipfunyika ibikoresho kugirango ikumire kwinjiza molekile zamazi. . Ihindura cyane ingaruka zo gufata amazi ya selile ya selile, kandi gukomera ni kimwe mubintu byo guhitamo selile. Ubwiza nabwo ni indangagaciro yingenzi ya methyl selulose ether. MC ikoreshwa mu ifu yumye isabwa kuba ifu, irimo amazi make, kandi ubwiza nabwo busaba 20% kugeza 60% byubunini buke butarenze 63um. Ubwiza bugira ingaruka kuri hydroxypropyl methylcellulose ether. Ubusanzwe MC isanzwe ni granular, kandi biroroshye gushonga mumazi nta agglomeration, ariko igipimo cyo kuyasesa kiratinda cyane, ntabwo rero gikwiriye gukoreshwa mumashanyarazi yumye. Mu ifu yumye yumye, MC ikwirakwizwa mubikoresho bya sima nka agregate, kuzuza neza na sima. Gusa ifu nziza ihagije irashobora kwirinda agglomeration ya methyl selulose ether mugihe ivanze namazi. Iyo MC yongewemo namazi yo gushonga agglomerates, biragoye gutatanya no gushonga. MC hamwe na coarser nziza ntabwo isesagura gusa, ahubwo inagabanya imbaraga zaho za minisiteri. Iyo ifu yumye yumye yubatswe ahantu hanini, umuvuduko wo gukira wa pompe yumye waho uragabanuka cyane, kandi gucika bibaho kubera ibihe bitandukanye byo gukira. Kuri spray mortar ukoresheje ubwubatsi bwa mashini, kubera igihe gito cyo gukurura, ubwiza burasabwa kuba hejuru.

Muri rusange, uko ubukonje buri hejuru, ningaruka nziza yo gufata amazi. Nyamara, uko hejuru yubukonje nuburemere bwa molekile ya MC, kugabanuka gukwiranye kwayo, bigira ingaruka mbi kumbaraga nubwubatsi bwa minisiteri. Iyo hejuru ya viscosity, niko bigaragara cyane kubyimbye bya minisiteri, ariko ntabwo bihwanye. Iyo hejuru ya viscosity, niko gufatana na minisiteri itose. Mugihe cyubwubatsi, izakomeza kumashanyarazi kandi ifatanye cyane na substrate. Ariko ntacyo ikora kugirango yongere imbaraga zimiterere ya minisiteri itose ubwayo. Mugihe cyubwubatsi, imikorere yo kurwanya-sagging ntabwo igaragara. Ibinyuranye na byo, methyl selulose ethers yahinduwe cyane ifite imikorere myiza mugutezimbere imbaraga zububiko bwa minisiteri itose.

Umubare munini wa selulose ether wongeyeho muri minisiteri, niko imikorere myiza yo gufata amazi, niko ubukonje bwinshi, niko imikorere yo gufata amazi ari nziza.

Ubwiza bwa HPMC nabwo bugira uruhare runini mu gufata amazi. Muri rusange, kuri methyl selulose ethers ifite ubwiza bumwe ariko ubwiza butandukanye, mugihe cyongeweho kimwe, nibyiza, nibyiza byo gufata amazi.

Kugumana amazi ya HPMC bifitanye isano nubushyuhe bwakoreshejwe, kandi kubika amazi ya methyl selulose ether bigabanuka hamwe no kwiyongera kwubushyuhe. Nyamara, mubikorwa bifatika, ifu yumye yumye ikoreshwa mubutaka bushyushye mubushyuhe bwinshi (hejuru ya dogere 40) ahantu henshi, nko kurukuta rwinyuma rushyira munsi yizuba mugihe cyizuba, akenshi byihutisha Gukiza sima no gukomera kwa icyuma cyumye. Kugabanuka kw'amazi yabitswe byatumye abantu bumva neza ko gukora ndetse no kurwanya ibice bigira ingaruka, kandi ni ngombwa cyane cyane kugabanya ingaruka ziterwa nubushyuhe mubihe nkibi. Nubwo methyl hydroxyethyl selulose ether yiyongera kuri ubu ifatwa nkaho iri ku isonga mu iterambere ry’ikoranabuhanga, kuba biterwa n'ubushyuhe birashobora gutuma intege nke zikorwa na minisiteri yumye. Nubwo ingano ya methyl hydroxyethyl selulose (formula yo mu cyi) yiyongereye, gukora no kurwanya ibice ntibishobora guhaza ibikenewe gukoreshwa. Binyuze mu buvuzi budasanzwe, nko kongera urugero rwa etherification, MC irashobora gukomeza gufata neza amazi yayo ku bushyuhe bwinshi, kugirango itange imikorere myiza mubihe bibi.