Gusuzuma ubwiza bwa hydroxypropyl methylcellulose

Ubu amasoko menshi ya hydroxypropyl carboxymethyl cellulose kandi ibiciro bikaba bitangana, uburyo bwo kumenya byihuse kandi byoroshye ubwiza bwa hydroxypropyl carboxymethyl cellulose bwabaye ikibazo gikomeye! None se ni gute wasuzuma ubwiza bwa hydroxypropyl methylcellulose? Ikintu cya mbere ugomba kureba ni umweru wa hydroxypropyl cellulose; nubwo umweru udashobora kumenya niba HPMC ikwiriye gukoreshwa, bamwe mu bakora ibintu bidahuje n’amategeko bongeramo ikintu cyo kuyungurura mu gihe cyo gutunganya, ibyo bizagira ingaruka ku bwiza bwayo. Ariko muri rusange, ether nyinshi nziza za cellulose zifite umweru mwiza kurushaho.

Icya kabiri, biterwa n'uburemere bwa hydroxypropyl methylcellulose: ingano y'uduce twa hydroxypropyl carboxymethyl cellulose ni mesh 80-100, munsi ya mesh 120, naho hydroxyethyl cellulose HECHPMC ni mesh 100. Igice kinini cya hpmc ni mesh 60-80. Muri rusange, uko methyl cellulose yoroshye, niko ikwirakwira neza.

Umucyo wa eteri ya selulosi mu gisubizo: shyira HPMC mu mazi kugira ngo ubone umuti wa colloidal ubonerana, uko umucyo urushaho kwiyongera, umucyo urushaho kwiyongera, niko ibintu bidashonga bigabanuka.

Iyo ibicuruzwa bishyushye, bisukamo gel cyangwa bikinjira mu mazi hanyuma bigashonga. Biba bidafite amazi kandi bishonga. Beto ni yo ifatana ry’ingenzi n’ibikoresho fatizo bigabanya amazi mu ifu ya putty idapfa amazi. Ihame ryo kudapfa amazi ni iri rikurikira: iyo ifu ya latex na sima bishobora kongera gushonga bivanze n’amazi, ifu ya latex izakomeza gusubira mu buryo bwa emulsion ya mbere, hanyuma uduce twa latex tugakwirakwira neza mu gishishwa cya sima. Nyuma yuko sima ihuye n’amazi, uburyo bwo gushyuha butangira, maze umuti wa Ca(OH)2 ukagera ku gushyuha hanyuma kristu zigahinduka. Muri icyo gihe, kristu za ettringite na calcium silicate hydrate colloids zirakorwa, hanyuma uduce twa latex tugashyirwa kuri On the gel na sima idafite amazi, uko uburyo bwo gushyuha bukomeza kwiyongera, umusaruro wo gushyuha ukomeza kwiyongera, kandi uduce twa latex dukomeza guteranira mu cyuho cy’ibintu bidafite umwimerere nka sima, maze tugakora urwego runini ku buso bwa kristu ya sima. , bitewe no kugabanuka buhoro buhoro k'ubushuhe bwumye, uduce twa latex twongeye gutatana muri gel n'imyanda birahuza kugira ngo bikore agace gahoraho, bigakora uruvange n'umubumbe w'isima, maze bigakorwamo ifu ya sima n'izindi fu. Utwo duce dufatanye.