HEC yo gutwikira

HEC (hydroxyethyl selulose) ni selile ya nonionic selile ikoreshwa cyane mubikorwa byo gutwikira. Mubikorwa byayo harimo kubyimba, gutatanya, guhagarika no gutuza, bishobora kunoza imikorere yubwubatsi ningaruka zo gukora firime. HEC ikoreshwa cyane cyane mumazi ashingiye kumazi kuko ifite amazi meza kandi meza.

1. Uburyo bwibikorwa bya HEC

Ingaruka

Imwe mumikorere yingenzi ya HEC mubitambaro ni kubyimba. Mugukomeza ubwiza bwa sisitemu yo gutwikisha, gutwikira hamwe no kuringaniza ibintu birashobora kunozwa, ibintu byo kugabanuka birashobora kugabanuka, kandi igifuniko gishobora gukora igipfundikizo kimwe kurukuta cyangwa ahandi hantu. Mubyongeyeho, HEC ifite ubushobozi bukomeye bwo kubyimba, bityo irashobora kugera ku ngaruka nziza yo kubyimba nubwo yaba yongeyeho bike, kandi ifite ubukungu buhanitse.

Guhagarikwa no gutuza

Muri sisitemu yo gutwikira, ibice bikomeye nka pigment hamwe nuwuzuza bigomba gukwirakwizwa neza mubikoresho fatizo, bitabaye ibyo bikagira ingaruka kumiterere no mumikorere ya coating. HEC irashobora gukomeza neza gukwirakwiza ibice bimwe bikomeye, ikarinda imvura, kandi igakomeza gutwikira neza mugihe cyo kubika. Ingaruka yo guhagarika ituma igifuniko gisubira muburyo bumwe nyuma yo kubika igihe kirekire, kugabanya ibyiciro nubushyuhe.

Kubika amazi

HEC irashobora gufasha amazi yo mwirangi kurekurwa gahoro gahoro mugihe cyo gusiga amarangi, bityo bikongerera igihe cyo kumisha irangi kandi bikayifasha kuringanizwa neza no gukorerwa firime kurukuta. Iyi mikorere yo gufata amazi ni ingenzi cyane kubikorwa byubwubatsi, cyane cyane ahantu hubatswe ubushyuhe cyangwa bwumutse, HEC irashobora kugabanya cyane ikibazo cyimiterere ya firime mbi iterwa no guhindagurika kwamazi.

Amabwiriza ya Rheologiya

Imiterere ya rheologiya irangi igira ingaruka muburyo bwimyumvire nubwiza bwa firime yubwubatsi. Igisubizo cyakozwe na HEC nyuma yo gushonga mumazi gifite pseudoplastique, ni ukuvuga ko ubukonje bugabanuka munsi yimbaraga nyinshi (nko gukaraba no kuzunguruka), byoroshye koza; ariko viscosity isubirana imbaraga zogosha nkeya, zishobora kugabanya kugabanuka. Ibi ntabwo byorohereza kubaka gusa, ahubwo binashimangira uburinganire nubunini bwikibiriti.

2. Ibyiza bya HEC

Amazi meza

HEC ni amazi ya elegitoronike ya polymer. Igisubizo cyakozwe nyuma yo guseswa kirasobanutse kandi kiboneye, kandi nta ngaruka mbi kigira kuri sisitemu yo gusiga amarangi. Gukemura kwayo kandi kugena uburyo bworoshye bwo gukoresha muri sisitemu yo gusiga irangi, kandi irashobora gushonga vuba idatanga uduce cyangwa agglomerates.

Imiti ihamye

Nka ether ya selile idafite ionic, HEC ifite imiti ihamye kandi ntishobora guhindurwa byoroshye nibintu nka pH, ubushyuhe, hamwe nicyuma cya ion. Irashobora kuguma itajegajega muri acide ikomeye na alkaline ibidukikije, bityo irashobora guhuza nubwoko butandukanye bwa sisitemu yo gutwikira.

Kurengera ibidukikije

Hamwe nogutezimbere ubumenyi bwibidukikije, imyenda ya VOC (ibinyabuzima bihindagurika) iragenda ikundwa cyane. HEC ntabwo ari uburozi, ntacyo itwaye, ntabwo irimo ibishishwa kama, kandi yujuje ibyangombwa bisabwa byo kurengera ibidukikije, bityo ikaba ifite ibyifuzo byinshi byo gukoresha mumazi ashingiye kubidukikije.

3. Ingaruka za HEC mubikorwa bifatika

Urukuta rw'imbere

Mu rukuta rw'imbere, HEC nk'umuhinduzi mwinshi kandi uhindura rheologiya irashobora kunoza imikorere yubwubatsi, ikayiha kuringaniza no gufatira hamwe. Byongeye kandi, kubera gufata neza amazi, HEC irashobora gukumira ibice cyangwa ifu yimyenda yinkuta imbere mugihe cyo kumisha.

Urukuta rw'inyuma

Urukuta rwo hanze rugomba kugira ibihe byiza byo guhangana nikirere no kurwanya amazi. HEC ntishobora gusa kunoza imikoreshereze y’amazi na rheologiya y’igitwikirizo, ariko kandi irashobora kongera imitungo irwanya kugabanuka kwifuniko, kugirango igifuniko gishobora kurwanya umuyaga n imvura nyuma yo kubaka no kongera ubuzima bwacyo.

Irangi

Mu irangi rya latex, HEC ntishobora gukora gusa kubyimbye, ariko kandi irashobora kunoza ubwiza bwirangi no gukora firime yo gutwika neza. Muri icyo gihe, HEC irashobora gukumira imvura igwa, igahindura neza ububiko bwirangi, kandi bigatuma irangi rya latex rihagarara nyuma yo kubikwa igihe kirekire.

IV. Icyitonderwa cyo kongera no gukoresha HEC

Uburyo bwo gusesa

Ubusanzwe HEC yongewe kumarangi muburyo bwa powder. Iyo ukoresheje, igomba kongerwaho buhoro buhoro mumazi hanyuma igashishikarizwa kuyishonga neza. Niba gusesa bidahagije, ibintu bya granulaire birashobora kugaragara, bigira ingaruka kumiterere y irangi.

Kugenzura urugero

Ingano ya HEC igomba guhindurwa ukurikije formulaire y'irangi n'ingaruka zisabwa. Amafaranga yongeyeho muri rusange ni 0.3% -1.0% yumubare wose. Kwiyongera cyane bizatera ubwiza bwirangi kuba hejuru cyane, bigira ingaruka kumyubakire; kwiyongera bidahagije bizatera ibibazo nko kugabanuka nimbaraga zidahagije zo guhisha.

Guhuza nibindi bikoresho

Mugihe ukoresheje HEC, witondere guhuza nibindi bikoresho byo gusiga irangi, cyane cyane pigment, ibyuzuza, nibindi. Muri sisitemu zitandukanye zo gusiga amarangi, ubwoko cyangwa ingano ya HEC birashobora gukenera guhinduka kugirango wirinde ingaruka mbi.

HEC igira uruhare runini mu nganda zitwikiriye, cyane cyane mu mazi. Irashobora kunoza imikorere, gukora firime no kubika ububiko bwimyenda, kandi ifite imiti ihamye no kurengera ibidukikije. Nuburyo buhenze cyane bwo guhindura no guhindura imvugo, HEC ikoreshwa cyane mugukuta kwimbere imbere, kurukuta rwinyuma no gusiga irangi. Mubikorwa bifatika, binyuze mukugenzura ibipimo bifatika no gukosora uburyo bwo gusesa, HEC irashobora gutanga ingaruka nziza yo kubyimba no gutuza kumpuzu no kunoza imikorere rusange yimyenda.