Kugereranya HEC na HPMC mu gukoresha irangi

Mu nganda zigezweho zo gusiga amarangi, kugira ngo hongerwe imiterere ya rheological, uburyo bwo kubika neza no gukora neza kw'inyubako y'urupapuro, akenshi ni ngombwa kongeramo inyongeramusaruro za polymer. Muri zo,selulose ya hydroxyethyl (HEC)nahydroxypropyl methylcellulose (HPMC)ni ibintu bibiri bikoreshwa cyane mu gukurura eteri ya selulosi n'ibiyikomeza. Nubwo byombi ari eteri za selulosi zidafite ionic, hari itandukaniro rigaragara mu miterere ya shimi, imiterere y'imikorere n'ingaruka z'ikoreshwa mu gupfuka.

1. Imiterere y'ibinyabutabire n'uburyo bishonga

HEC ni polymer idashonga mu mazi ikozwe muri cellulose karemano binyuze mu kwinjiza amatsinda ya hydroxyethyl binyuze mu gukora etherification reaction. Imiterere yayo ya molekile ikungahaye ku matsinda ya hydroxyethyl na hydroxyethyl, bigatuma igira amazi ashongesha neza. HEC ishobora gushonga vuba mu mazi akonje kugira ngo ikore umuti ubonerana kandi ugaragara.

HPMC ni polymer ikorwa binyuze mu gushyiramo hydroxypropyl na methyl substituents kuri molekile za cellulose. Bitewe n'uko itsinda ryayo rya methyl ridafite hydrophobic, ifite imikorere myiza ku buso no gukora filime kurusha HEC. HPMC irabyimba buhoro buhoro mu mazi akonje, ifata igihe runaka kugira ngo ishonge burundu, kandi ikagira ingaruka zikomeye ku bushyuhe.

2. Kugereranya imiterere y'imitsi yo mu maraso

HEC ifite imiterere ya rheological igaragara neza, igaragaza ubuziranenge bwa pseudoplasticity, ni ukuvuga imiterere yo gukata, kandi ikwiriye uburyo bwo gusiga irangi busaba kuringaniza neza. Ubukana bwa HEC buragabanuka iyo irangi rinini, ibyo bikaba bifasha mu koza, gukata irangi no kuringaniza mu gihe cyo kubaka.

Umuti wa HPMC ugaragaza imyitwarire ikomeye ya pseudoplastic, hamwe n'ubukana bwinshi iyo ugabanyijeho ibice, bifasha kwirinda gushwanyagurika no kugwa; ubukana bugabanuka cyane iyo ugabanyijeho ibice byinshi, ibyo bikaba byiza mu kunoza imiterere. Kubwibyo, HPMC ikora neza mu gusiga ku ruhande rw'imbere bisaba ubushobozi bukomeye bwo kurwanya kugwa.

3. Kubungabunga amazi n'imikorere y'inyubako

HPMC ifite ubushobozi bwo kubika amazi kurusha HEC, cyane cyane ahantu humutse cyangwa hari ubushyuhe bwinshi, HPMC ishobora gutinza amazi mu buryo bufatika no gukumira gucika cyangwa gushonga kw'agapira ko gutwikira. Ibi bituma HPMC ikoreshwa cyane mu gusiga irangi rishingiye kuri putty, gypsum na sima, cyane cyane ikwiriye gusiga amarangi mu mpeshyi cyangwa mu bihe byumye.

Nubwo HEC ifite imikorere runaka yo kubika amazi, ingaruka zayo ni nkeya ugereranyije na HPMC, cyane cyane mu bushyuhe bwinshi n'umuyaga mwinshi. Amazi yayo adahagije ashobora gutuma yumuka vuba cyane nyuma yo kubaka, bityo bigatuma igipfundikizo cy'igipfundikizo kigabanuka kandi kigahagarara neza.

4. Ubudahangarwa bwa enzymes no kubora kw'ibinyabuzima

HEC ifite imiterere myinshi ya hydroxyethyl kandi byoroshye kwangirika na mikorobe. Kubwibyo, ubudahangarwa bwayo bwa enzymes buragabanuka cyane, cyane cyane iyo ibitswe igihe kirekire, bishobora kwangirika, bityo hakaba hakenewe kongerwamo imiti irinda ubushyuhe kugira ngo igihe cyo kubika cyongere.

HPMC ifite ubudahangarwa bwiza bwa enzymes kurusha HEC kandi irahamye kurushaho. Ikwiriye cyane cyane irangi ry’inganda rifite ubushobozi bwo kubika neza.

5. Ikiguzi n'ikoreshwa ry'isoko

Ukurikije ibiciro, HEC irahendutse kandi ikwiriye ibikoresho binini kandi bihendutse byo gusiga irangi ku nyubako. Ingaruka nziza zo gukuba no kugenda neza bituma igira isoko rikomeye mu bikorwa nko gusiga irangi ku nkuta imbere no gusiga irangi rya latex riciriritse.

Nubwo HPMC ihenze gato, imikorere yayo myiza cyane ituma ikoreshwa cyane mu buryo bwo gusiga amarangi hagati na hagati, cyane cyane mu bihe bikenewe cyane mu mikorere y’ubwubatsi, kwirinda kugwa no kubika amazi, nko gusiga amarangi ku nkuta zo hanze, gusiga amarangi areshya, n’udupira twihanganira ikirere.

6. Ibidukikije n'umutekano

Zombi ni ether za cellulose zitari ionic, zifite ubushobozi bwo guhuza ibidukikije kandi zishobora kwangirika, ntizirimo ibintu bihinduka ibimera (VOCs), kandi zijyanye n'iterambere ry'ibirahure by'icyatsi kibisi n'ibidahumanya ibidukikije. Ariko, mu gihe cyo kubikoresha, hagomba kwitabwaho cyane ku ivumbi ryabyo no kuba bifite hygroscopicity, kandi hagomba kwitabwaho uburyo bwo kubikoresha.

HECnaHPMCBuri kimwe gifite ibyiza byacyo mu gukoresha irangi. HEC ikwiriye cyane ibikoresho byo gusiga byibanda ku kugenzura ikiguzi kandi bifite ibisabwa byinshi kugira ngo inyubako irusheho kugenda neza; mu gihe HPMC ikoreshwa cyane mu bikoresho byo gusiga hagati kugeza hejuru bifite ibisabwa mu gukora neza bitewe nuko amazi abika neza, birwanya kugwa no gukora neza. Mu bikorwa nyabyo, HEC cyangwa HPMC bigomba gutoranywa neza hashingiwe ku bintu nk'ibisabwa mu gukora irangi, uburyo bwo kubaka n'ikirere, kandi bishobora no gukoreshwa hamwe uko bikenewe kugira ngo habeho imikorere myiza.