Focus on Cellulose ethers

Puisano ka Phello ea Keketso ea Hydroxypropyl Methyl Cellulose mabapi le Thepa ea Seretse.

Hydroxypropyl methylcellulose HPMC e ka ntlafatsa haholo ho boloka metsi a seretse.Tekanyo e tlase ea hydroxypropyl methylcellulose HPMC e ka ntlafatsa haholo sekhahla sa ho boloka metsi a seretse.Ha tekanyo e le 0.02%, sekhahla sa ho boloka metsi se nyoloha ho tloha ho 83% se nyolohile ho ea ho 88%;ha tekanyo e ne e le 0.2%, sekhahla sa ho boloka metsi se fihlile ho 97%.Ka nako e ts'oanang, litaba tse tlaase tsa HPMC li boetse li fokotsa haholo tekanyo ea delamination le tekanyo ea mali ea seretse, e leng se bontšang hore HPMC e ke ke ea ntlafatsa feela ho boloka metsi a seretse, empa hape e ntlafatsa haholo momahano ea seretse, e bohlokoa bakeng sa ho ts'oana ha boleng ba kaho ea seretse.e ntle haholo.

Leha ho le joalo, hydroxypropyl methylcellulose HPMC e na le tekanyo e itseng ea tšusumetso e mpe ho matla a flexural le matla a hatellang a seretse.Ka keketseho ea litaba tsa hydroxypropyl methylcellulose HPMC, matla a flexural le matla a hatellang a seretse a ile a fokotseha butle-butle.Ka nako e ts'oanang, hydroxypropyl methylcellulose HPMC e ka eketsa matla a thata a seretse.Ha litaba tsa hydroxypropyl methylcellulose HPMC li le ka hare ho 0.1%, matla a matla a seretse a ntse a eketseha ka ho eketseha ha litaba tsa HPMC, athe Ha litaba li feta 0.1%, matla a matla a ke ke a hlola a eketseha haholo.Hydroxypropyl methylcellulose HPMC e ka boela ea eketsa haholo matla a khatello ea sekhooa sa seretse.Ho eketsa 0.2% HPMC ho ka etsa hore matla a bond ea seretse ho tloha 0.72MPa a eketsehe ho isa ho 1.16MPa.

Liphuputso li bontšitse hore hydroxypropyl methylcellulose HPMC e ka lelefatsa nako ea ho pholile ha seretse haholo 'me ea fokotsa haholo ho thella ha seretse, e leng molemo haholo bakeng sa kaho ea pente ea lithaele.Ha HPMC e sa eketsoe, matla a bond ea seretse se pholileng ka metsotso e 20 a fokotseha ho tloha 0.72MPa ho ea 0.54MPa.Kamora ho eketsa 0.05% le 0.1% HPMC, matla a bond ea seretse se pholisitsoeng ka metsotso e 20 ke 0.8MPa le 0.84MPa, ka ho latellana.Ha HPMC e sa eketsoa, ​​ho thella ha seretse ke 5.5mm.Ka keketseho ea litaba tsa HPMC, ho thella ho fokotseha ho sa khaotse.Ha litaba li le 0.2%, ho thella ha seretse ho theohela ho 2.1mm, 'me ho thella ho fokotsehile haholo.'Me kaho e' ngoe e tšesaane e fana ka tšehetso ea tekheniki.

Ho phaella moo, hydroxypropyl methylcellulose HPMC ka ka katleho thibela ho thehoa ha mapetsong a polasetiki ka seretse le haholo fokotsa mapetsong a polasetiki.Ha litaba tsa HPMC li le tlase, index ea crack e fokotseha haholo ka keketseho ea litaba tsa HPMC.Ha litaba tsa HPMC e le 0.1% le 0.2%, index ea crack e amanang le seretse ke 63% le 50%, ka ho latellana.Ka mor'a hore litaba tsa HPMC li fete 0.2%, Mapetso a polasetiki a seretse ha a sa fokotseha haholo.


Nako ea poso: Apr-11-2023
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