Ibikorwa byo gukora no gukora hydroxyethyl selulose (HEC)

I. Intangiriro

Hydroxyethyl Cellulose (HEC) ni polymer idafite amazi ya elegitoronike ikoreshwa cyane mugukuramo amavuta, gutwikira, kubaka, imiti ya buri munsi, gukora impapuro nizindi mirima. HEC iboneka muguhindura imiti ya selile, kandi imiterere yayo nimikoreshereze bigenwa cyane cyane nimbaraga za hydroxyethyl kuri molekile ya selile.

II. Inzira yumusaruro

Igikorwa cyo kubyaza umusaruro HEC gikubiyemo ahanini intambwe zikurikira: etulifike ya selile, gukaraba, kubura amazi, kumisha no gusya. Ibikurikira nintangiriro irambuye kuri buri ntambwe:

Cellulose etherification

Cellulose yabanje kuvurwa na alkali kugirango ikore alkali selile (Cellulose Alkali). Ubu buryo busanzwe bukorerwa mumashanyarazi, hakoreshejwe sodium hydroxide yumuti kugirango ivure selile naturel kugirango ikore alkali selile. Imiti ikora niyi ikurikira:

Akagari-OH + NaOH → Akagari-O-Na + H2OCell-OH + NaOH → Akagari-O-Na + H 2O

Noneho, alkali selulose ikora na okiside ya Ethylene ikora hydroxyethyl selulose. Igisubizo gikozwe mumuvuduko mwinshi, mubisanzwe 30-100 ° C, kandi reaction yihariye niyi ikurikira:

Akagari-O-Na + CH2CH2O → Akagari-O-CH2CH2OHCell-O-Na + CH 2CH 2O → Akagari-O-CH 2CH 2OH

Iyi reaction isaba kugenzura neza ubushyuhe, umuvuduko nubunini bwa okiside ya Ethylene yongeweho kugirango harebwe ubuziranenge nubwiza bwibicuruzwa.

Gukaraba

Ibicuruzwa bivamo HEC mubisanzwe birimo alkali idakozwe, okiside ya etilene nibindi bicuruzwa, bigomba gukurwaho no gukaraba amazi menshi cyangwa gukaraba kama. Amazi menshi arakenewe mugihe cyo gukaraba amazi, kandi amazi yanduye nyuma yo gukaraba agomba gutunganywa no gusohoka.

Umwuma

HEC itose nyuma yo gukaraba igomba kuba idafite umwuma, mubisanzwe no kuyungurura vacuum cyangwa gutandukanya centrifugal kugirango igabanye ibirimo.

Kuma

HEC idafite umwuma yumye, mubisanzwe mukumisha spray cyangwa flash yumye. Ubushyuhe nigihe bigomba kugenzurwa cyane mugihe cyumye kugirango wirinde kwangirika kwinshi cyangwa agglomeration.

Gusya

Inzitizi ya HEC yumye igomba kuba hasi kandi ikayungurura kugirango igere ku bunini bumwe, hanyuma amaherezo ikore ifu cyangwa ibicuruzwa.

III. Ibiranga imikorere

Amazi meza

HEC ifite amazi meza kandi irashobora gushonga vuba mumazi akonje kandi ashyushye kugirango bibe igisubizo kiboneye cyangwa cyoroshye. Iyi mitungo ya solubilité ituma ikoreshwa cyane nkibibyimbye hamwe na stabilisateur mu mwenda n’ibicuruzwa bya buri munsi.

Kubyimba

HEC yerekana ingaruka zikomeye mubyibisubizo byamazi, kandi ububobere bwayo bwiyongera hamwe no kwiyongera kwibiro bya molekile. Iyi mitungo yibyibushye ituma igira uruhare mukubyimba, gufata amazi no kunoza imikorere yubwubatsi mu mavuta ashingiye kumazi no kubaka minisiteri.

Rheologiya

Igisubizo cyamazi ya HEC gifite imiterere yihariye ya rheologiya, kandi ubwiza bwayo burahinduka hamwe nihinduka ryikigereranyo cyogosha, byerekana kunanuka cyangwa pseudoplastique. Uyu mutungo wa rheologiya urawushoboza guhindura amazi nubwubatsi mubikorwa byo gutwikira hamwe namavuta yo gucukura peteroli.

Emulisation no guhagarikwa

HEC ifite emulisiyoneri nziza noguhagarika, irashobora guhagarika ibice byahagaritswe cyangwa ibitonyanga muri sisitemu yo gutatanya kugirango birinde gutandukana no gutembera. Kubwibyo, HEC ikunze gukoreshwa mubicuruzwa nka emulsiyasi hamwe no guhagarika ibiyobyabwenge.

Ibinyabuzima

HEC ni selile ya selile isanzwe ikomoka ku binyabuzima, nta kwanduza ibidukikije, kandi yujuje ibisabwa byo kurengera ibidukikije.

IV. Imirima yo gusaba

Kwambara

Mu mazi ashingiye ku mazi, HEC ikoreshwa nkibyimbye na stabilisateur kugirango itezimbere amazi, imikorere yubwubatsi hamwe nuburyo bwo kurwanya kugabanuka.

Ubwubatsi

Mu bikoresho byubwubatsi, HEC ikoreshwa muri sima ishingiye kuri sima nifu ya putty kugirango tunoze imikorere yubwubatsi no gufata amazi.

Imiti ya buri munsi

Imyenda yo kwisiga, shampo, hamwe nu menyo yinyo, HEC ikoreshwa nkibyimbye kandi bigahindura kugirango byongere ibyiyumvo nibihamye byibicuruzwa. 

Amashanyarazi

Mu gucukura peteroli no kuvunika amazi, HEC ikoreshwa muguhindura imiterere noguhagarika ibintu byamazi yo gucukura no kunoza imikorere yumutekano numutekano.

Gukora impapuro

Mubikorwa byo gukora impapuro, HEC ikoreshwa mugucunga amazi ya pulp no kunoza uburinganire nubuso bwimpapuro.

Hydroxyethyl selulose (HEC) yakoreshejwe henshi mu nganda nyinshi kubera ubwiza bw’amazi meza, kubyimba, imiterere ya rheologiya, emulisiyonike no guhagarika, ndetse n’ibinyabuzima byiza. Umusaruro wacyo urakuze. Binyuze mu ntambwe za etulifike ya selile, gukaraba, kubura amazi, kumisha no gusya, ibicuruzwa bya HEC bifite imikorere ihamye kandi bifite ireme birashobora gutegurwa. Mu bihe biri imbere, hamwe no kunoza ibisabwa byo kurengera ibidukikije no guteza imbere ikoranabuhanga, ibyifuzo bya HEC bizaba binini.