Hadin Hydroxyethyl cellulose (HEC)wani polymer ne mai narkewar ruwa wanda ba na ionic ba, wanda aka yi daga cellulose na halitta ta hanyar etherification. Saboda yana samar da mafita mai haske da kwanciyar hankali na colloidal lokacin da aka narkar da shi a cikin ruwa, ana amfani da shi sosai a cikin rufi, sinadarai na gida, kayan gini, haƙo mai, da sauran fannoni. Tasirin HEC akan danko tsarin yana ɗaya daga cikin mahimman ayyukansa, kuma wannan tasirin ya ƙunshi abubuwa da yawa, gami da tsarin kwayoyin halitta, narkewa, da yanayi na waje.
1. Alaƙa tsakanin Tsarin Kwayoyin Halitta da Danko
Babban sarkar HEC ita ce kashin bayan cellulose wanda aka haɗa ta hanyar haɗin β-1,4-glucose, tare da maye gurbin ƙungiyoyin hydroxyl akan raka'o'in glucose da ƙungiyoyin hydroxyethyl. Matsayin maye gurbin (DS) da maye gurbin molar (MS) suna ƙayyade ƙarfin narkewar kwayar halitta a cikin ruwa da sassaucin sassan sarkar. Sarƙoƙin kwayoyin halitta masu tsayi (mafi girman nauyin kwayar halitta) da matsakaicin matakin maye gurbin suna haifar da ƙarin haɗuwa bayan ruwa, wanda ke ƙara yawan danko na tsarin. HEC mai nauyin kwayar halitta yana samar da danko mafi girma fiye da nau'ikan ƙananan nauyin kwayoyin halitta a lokaci guda.
2. Tsarin Narkewa da Ruwan Sha Yana Shafar Danko
Tsarin narkewar HEC a cikin ruwa ya ƙunshi matakai uku: jika, warwatsewa, da kuma ruwa. Idan foda na HEC ya haɗu da ruwa, saman waje yana shan ruwa nan take ya faɗaɗa ya samar da fim, sannan a hankali ruwan ya shiga cikin Layer na ciki. Bayan cikakken ruwa, ƙwayoyin dogon sarka suna warwatse a cikin ruwa, suna samar da mafita tare da tsarin hanyar sadarwa ta sarari wanda ke hana kwararar ƙwayoyin ruwa, ta haka ne ke ƙara dankowar ruwan. Idan narkewar bai cika ba ko kuma haɗuwa ta faru, sarƙoƙin ƙwayoyin ba su bayyana gaba ɗaya ba, wanda ke haifar da ƙarancin danko.
3. Alaƙa tsakanin Mai da Hankali da Danko
A cikin ƙarancin yawan haɗuwa, yawan haɗuwar HEC yana ƙaruwa kusan a layi tare da ƙaruwar yawan haɗuwa. Lokacin da yawan haɗuwa ya kai ga mahimmancin yawan haɗuwa, ƙarin haɗuwa suna faruwa tsakanin sarƙoƙin kwayoyin halitta, kuma yawan haɗuwa yana ƙaruwa sosai. Yawan haɗuwa da yawa na iya sa maganin ya nuna yanayin gel, wanda ke rage yawan ruwa sosai. Saboda haka, a aikace, dole ne a zaɓi adadin da ya dace bisa ga buƙatun tsarin don cimma burin ƙin haɗuwa.
4. Tasirin Yanayin Waje akan Danko
Zafin Jiki: Dankowar sinadaran HEC yana raguwa yayin da zafin jiki ke ƙaruwa. Wannan saboda yawan zafin jiki yana ƙara ƙarfin motsin zafi na sarƙoƙin kwayoyin halitta, yana rage kwanciyar hankali na matakin ruwa. pH: Dankowar HEC tana da ƙarfi sosai a cikin kewayon pH na 2-12, amma yanayin acid da alkaline mai tsanani na iya wargaza sarƙoƙin kwayoyin halitta, wanda ke haifar da raguwar danko.
Gishiri da Sinadarai: A matsayin wani polymer mara ionic, HEC yana da ƙarfi idan aka kwatanta da electrolytes. Duk da haka, yawan gishiri ko sinadaran da ke cikinsa na iya shafar ruwan da ke cikinsa, ta haka ne zai rage danko.
5. Kula da Danko a Tsarin Daban-daban
Masana'antar Rufi: HEC tana ba da dacewar amfani da ɗanko da kuma daidaita halaye a cikin fenti na latex, wanda ke hana launin launi da cikawa su tsaya.
Sinadaran Gida: A cikin shamfu da sabulun hannu, HEC yana ba da daidaito mai laushi kuma yana daidaita kumfa.
Kayan Gine-gine: A cikin turmi na siminti, HEC yana ba da riƙe ruwa da daidaito, yana inganta aikin aikace-aikace.
Haƙar Mai: Ana amfani da HEC a cikin ruwan haƙa don daidaita rheology da haɓaka ƙarfin ɗaukar guntu.
Hydroxyethyl cellulose yana ƙara dankowar tsarin sosai ta hanyar samar da sinadarai masu dogon sarka a cikin ruwa, da kuma hanyar sadarwa ta sararin samaniya. Dankowar ba wai kawai tana da alaƙa da nauyin kwayoyin HEC, matakin maye gurbinsu, da kuma yawansu ba, har ma yana shafar yanayin zafi, pH, da kuma tsarin. A cikin ƙirar tsari,da kyau zaɓar nau'in HECkuma yawan amfani da shi yana ba da damar sarrafa halayen rheological na samfurin daidai, yana cimma sakamako iri-iri daga siriri zuwa kauri.
Lokacin Saƙo: Agusta-08-2025