Itandukaniro hagati ya HEC na HPMC

HEC (Hydroxyethyl Cellulose) na HPMC (Hydroxypropyl Methylcellulose) byombi bikoreshwa cyane mubikorwa byo gusiga amarangi nkibibyimbye hamwe na rheologiya. Mugihe basangiye bimwe, hariho kandi itandukaniro ryingenzi mumitungo yabo no mubikorwa.

Imwe muntandukanyirizo nyamukuru hagati ya HEC na HPMC iri mumiterere yimiti yabo. HEC ikomoka kuri selile binyuze mu kongeramo amatsinda ya okiside ya Ethylene, mugihe HPMC ikomatanyirizwa muri selile binyuze mu kongeramo oxyde ya propylene na methyl. Itandukaniro ryimiterere ritanga itandukaniro mubikorwa byabo mugusiga amarangi.

Kubijyanye no kubishyira mu bikorwa, HEC izwiho gufata neza amazi no kubyibuha, bigatuma ikoreshwa mu gusiga amarangi ashingiye ku mazi. Ifasha kunoza ubwiza no gutuza kw'irangi, itanga uburyo bwiza bwo kuyikoresha no kuyikwirakwiza. Kurundi ruhande, HPMC itanga ubushobozi busa bwo kubyimba no gufata amazi, ariko kandi itanga uburyo bwiza bwo kurwanya sag nigihe cyiza cyo gufungura amarangi. Ibi bituma ihitamo gukoreshwa muburyo bukomeye bwo gutwikira hamwe na latex irangi.

Irindi tandukaniro ryingenzi hagati ya HEC na HPMC ni uguhuza nibindi byongeweho amarangi. HEC yunvikana cyane kuri pH na electrolytite, ishobora kugabanya guhuza kwayo hamwe ninyongeramusaruro. Ibinyuranye, HPMC yerekana guhuza neza hamwe ningeri zinyongera, bigatuma ihitamo byinshi kuri sisitemu zitandukanye.

Byongeye kandi, HPMC izwiho imiterere yo gukora firime, ishobora kugira uruhare muri rusange kuramba no gukora muri firime. Ibi bituma iba ingirakamaro mumarangi yo hanze hamwe no gutwikira aho kurwanya ikirere no kurinda igihe kirekire ari ngombwa.

Mu gusoza, mugihe HEC na HPMC zombi zitanga inyungu zibyibushye hamwe na rheologiya muburyo bwo gusiga amarangi, itandukaniro ryabo mumiterere yimiti, imikorere, hamwe no guhuza bituma bikwiranye nubwoko butandukanye bwo gusiga amarangi. Gusobanukirwa itandukaniro nibyingenzi kubashinzwe guhitamo inyongeramusaruro ikwiye kugirango bagere kumuranga wifuza no gukora.