Abubuwan da ke Shafar Danko na Maganin HEC: Muhimman Bayani game da Aikace-aikacen Masana'antu

1.Nauyin kwayoyin halitta da Matakin Polymerization

Nauyin kwayoyin halitta na HEC yana shafar dankonsa kai tsaye. Manyan polymers masu nauyin kwayoyin halitta suna ƙirƙirar sarƙoƙi masu tsayi, waɗanda ke haɗuwa sosai a cikin ruwan, wanda ke haifar da ƙaruwar danko. Misali, bincike ya nuna cewa HEC tare da babban matakin polymerization (DP) yana samar da tsari mai ƙarfi kamar gel, yana haɓaka riƙe ruwa a cikin turmi da aka yi da siminti. Aikace-aikacen masana'antu galibi suna buƙatar daidaita nauyin kwayoyin halitta tare da iya aiki - mafi girman DP HEC na iya inganta mannewa amma yana iya hana kwararar turmi masu daidaita kansu.

2.Tattara HEC a cikin Magani

Danko yana ƙaruwa sosai idan aka yi la'akari da yawan sinadarin HEC. A ƙananan yawan sinadarin (misali, 0.2–0.5% a cikin turmi na siminti), HEC tana samar da ruwa mai kama da filastik wanda ke kiyaye ƙarfin aiki yayin da yake tsayayya da raguwa. Duk da haka, wuce gona da iri (misali, >1%) na iya haifar da kauri mai yawa, yana da wahala a haɗa da amfani. Bincike kan tsarin HEC-alumina ya nuna cewa 500 ppm HEC yana daidaita dakatarwar ta hanyar hana sikari, amma ƙananan yawan sinadarin (100 ppm) suna buƙatar surfactants don irin wannan tasirin.

3.Tasirin Zafin Jiki

Ana nuna samfuran HECDanko mai dogaro da zafin jikiYayin da zafin jiki ke ƙaruwa, sarƙoƙin polymer suna raguwa saboda raguwar haɗin hydrogen, rage yawan hydrodynamic da danko. Misali, a 40°C, danko na HEC zai iya raguwa da kashi 30-50%, wanda hakan zai shafi aikin a yanayin zafi. Duk da haka, HEC yana riƙe da kwanciyar hankali har zuwa 90°C, wanda hakan ya sa ya dace da ayyukan zafi mai yawa kamar haƙa mai.

4.Ƙimar Rage da Halayyar Pseudoplastic

mafita na HEC sunerage rage gashi, ma'ana danko yana raguwa a ƙarƙashin matsin lamba na inji (misali, haɗawa ko famfo). Wannan siffa tana tabbatar da sauƙin amfani da shi a cikin turmi da fenti yayin da yake kiyaye haɗin kai a hutawa. Misali, turmi mai rufi tare da HEC yana ci gaba da aiki yayin troweling amma yana tsayayya da raguwa bayan amfani.

5.pH da Ƙarfin Ionic

Yanayin HEC mara ionic yana sa ya rage saurin kamuwa da pH idan aka kwatanta da polymers na ionic. Duk da haka, matakan pH masu tsauri ko ƙarfin ionic mai yawa na iya canza halayen mafita. A cikin yanayin acidic (pH

6.Ƙari da Co-Solutes

Kasancewar ruwayen ionic, surfactants, ko gishiri yana daidaita dankowar HEC. Misali:

• Ruwan Ionic: Ƙara 1-butyl-3-methylimidazolium bromide yana rage danko na HEC ta hanyar katse hulɗar polymer-water.
• Masu surfactants: Masu amfani da sinadarai marasa ionic (misali, Tween 80) suna inganta sake gina tsarin HEC da aka busar da shi da daskare.