Kugira ngo harebwe ubwiza bwa hydroxypropyl methyl cellulose

Ubuselulose ya hydroxypropyl carboxymethylIsoko ry’ubucuruzi rirushaho kuba ritaringaniye, igiciro ntikiba gihuje, uburyo bwo gukemura vuba ubuziranenge bwa hydroxypropyl methyl cellulose bwabaye ikibazo gikomeye! None se ni gute wasuzuma ubuziranenge bwa hydroxypropyl methylcellulose? Ikintu cya mbere cyo kureba ni ubuziranenge bwa hydroxypropyl cellulose; Nubwo ubuziranenge budashobora gusobanurwa neza niba HPMC ikwiriye gukoreshwa, ariko mu gihe cyo gutunganya hari n’abakora nabi bongeramo ikintu cyo kuyungurura, cyangiza ubuziranenge bwayo. Ariko muri rusange, ether nyinshi nziza ya cellulose ni ubuziranenge bwiza.

Icya kabiri, kureba uburyo selulosi ya hydroxypropyl methyl cellulose ingana: ingano y'uduce twa selulosi ya hydroxypropyl carboxymethyl ni mesh 80-100, mesh 120 ni nke, hydroxyethyl cellulose HECHPMC ni mesh 100. HPMC kuri mesh nyinshi ya 60-80, selulosi ya methyl rusange ni yoroshye, kandi ikwirakwira neza.

Igisubizo cy'ubuziranenge bwa eteri ya selulose:HPMCShyira mu mazi kugira ngo habeho umuti ubonerana wa koloyide, reba uko ubushobozi bw'imiti burushaho kuba bwinshi, uko ubushobozi bw'imiti butashongesha burushaho kuba buke.

Iyo ibicuruzwa bishyushye, birahinduka gelatin cyangwa bigashyirwa hamwe hanyuma bigashonga. Biba bidafite amazi kandi bishonga mu mazi. Beto ni yo ipfundo ry'ingenzi rihuza kandi rikuraho amazi mu ifu ya putty idashobora gushonga. Ihame ryayo ridashobora gushonga amazi ni iri rikurikira: Mu gihe cyo kongeramo amazi no kuvanga ifu ya latex na sima bishobora gushonga, ifu ya latex ikomeza kugaruka ku ishusho ya emulsion ya mbere, kandi uduce twa latex dukwirakwira mu gishishwa cya sima. Nyuma yuko sima ihuye n'amazi, uburyo bwo guhumeka butangira, maze umuti wa Ca (OH) 2 ugera ku gushonga hanyuma ugatera kristu, kandi icyarimwe, kristu za ettringite na calcium silicate hydrate colloids birakorwa. Uduce twa latex dushyirwa kuri gel na sima idafite amazi. Uko uburyo bwo guhumeka bugenda butera imbere, ibintu byo guhumeka birimo kwiyongera, kandi uduce twa latex duteranywa buhoro buhoro mu bintu bidafite umwimerere nka sima, kandi dukora urwego rwo gukusanya hafi ku buso bwa gel ya sima. Bitewe no kugabanuka buhoro buhoro kw'amazi yumye, uduce twa latex twongeye gutabagurika muri gel na voids turakomera tugakora agace gahoraho, dukora uruvange rw'umushongi wa sima uhuza matrix, kandi tugahuza umushongi wa sima n'izindi fu.