Haɗawa da Abubuwan Rheological na Hydroxyethyl Cellulose Ether

A gaban wani alkali mai kara kuzari, masana'antu hydroxyethyl An amsa cellulose tare da N- (2,3-epoxypropyl) trimethylammonium chloride (GTA) cationization reagent don shirya babban maye gurbin quaternary ammonium ta hanyar bushe nau'in Gishiri Hydroxyethyl cellulose ether (HEC). Sakamakon rabo na GTA zuwa hydroxyethyl cellulose (HEC), rabon NaOH zuwa HEC, yawan zafin jiki na amsawa, da lokacin amsawa game da yadda ya dace an bincika tare da tsarin gwaji na uniform, kuma an samu ingantaccen yanayin tsari ta hanyar Monte Monte. Carlo kwaikwayo. Kuma ingancin amsawar reagent cationic etherification ya kai 95% ta hanyar tabbatar da gwaji. A lokaci guda, an tattauna kaddarorin rheological. Sakamakon ya nuna cewa maganinHEC ya nuna halaye na ruwan da ba na Newtonian ba, kuma bayyanarsa na danko ya karu tare da karuwar yawan taro na bayani; a cikin wani taro na gishiri bayani, da fili danko naHEC ya ragu tare da ƙara yawan ƙwayar gishiri. A karkashin wannan shear kudi, da fili danko naHEC a cikin tsarin maganin CaCl2 ya fi naHEC a cikin tsarin bayani na NaCl.

Mabuɗin kalmomi:Hydroxyethylether cellulose; bushe tsari; rheological Properties

Cellulose yana da sifofin albarkatu masu albarka, haɓakar halittu, haɓakar halittu da sauƙi mai sauƙi, kuma wurin bincike ne a fagage da yawa. Cationic cellulose yana daya daga cikin muhimman wakilan cellulose. Daga cikin cationic polymers don samfuran kariya na sirri da CTFA na Associationungiyar Masana'antar Kamshi suka yi rajista, amfani da shi shine na farko. Ana iya amfani dashi ko'ina a cikin abubuwan gyaran gashi, masu laushi, masu hana shale hydration inhibitors da jami'an anti-coagulation na jini da sauran fannoni.

A halin yanzu, hanyar shirye-shiryen quaternary ammonium cationic hydroxyethyl cellulose ether shine hanyar warwarewa, wanda ke buƙatar babban adadin kayan kaushi mai tsada, yana da tsada, mara lafiya, kuma yana gurɓata yanayi. Idan aka kwatanta da sauran ƙarfi hanya, da bushe hanya yana da fice abũbuwan amfãni daga cikin sauki tsari, high dauki yadda ya dace, da kuma kasa muhalli gurbatawa. A cikin wannan takarda, cationic cellulose ether an haɗa shi ta hanyar bushewa kuma an yi nazarin halayen rheological.

1. Bangaren gwaji

1.1 Materials da reagents

Hydroxyethyl cellulose (HEC masana'antu samfurin, ta kwayoyin maye digiri DS ne 1.8 ~ 2.0); cationization reagent N- (2,3-epoxypropyl) trimethylammonium chloride (GTA), wanda aka shirya daga epoxy chloride Propane da trimethylamine an yi su ne a ƙarƙashin wasu yanayi; alkali mai kara kuzari; ethanol da glacial acetic acid suna nazari ne mai tsabta; NaCl, KCl, CaCl2, da AlCl3 sune reagents masu tsafta na sinadarai.

1.2 Shiri na quaternary ammonium cationic cellulose

Ƙara 5g na hydroxyethyl cellulose da adadin da ya dace na gida na alkali mai kara kuzari a cikin silinda na ƙarfe na silinda sanye take da mai motsawa, da motsawa na minti 20 a zafin jiki; sa'an nan ƙara wani adadin GTA, ci gaba da motsawa na minti 30 a dakin da zafin jiki, da kuma amsa a wani zazzabi da kuma lokaci , wani m danyen samfurin da gaske dogara a kan samu. An jiƙa ɗanyen samfurin a cikin maganin ethanol mai ɗauke da adadin adadin acetic acid, tacewa, wankewa, da bushewa don samun foda na quaternary ammonium cationic cellulose.

1.3 Ƙaddamar da ƙananan ƙwayar nitrogen na quaternary ammonium cationic hydroxyethyl cellulose

Hanyar Kjeldahl ta ƙayyade yawan juzu'in nitrogen a cikin samfuran.

2. Ƙirar gwaji da inganta tsarin busassun kira

An yi amfani da hanyar ƙirar kayan aiki don tsara gwajin, kuma an bincika tasirin rabon GTA zuwa hydroxyethyl cellulose (HEC), rabon NaOH zuwa HEC, yanayin zafin jiki da lokacin amsawa akan yadda ya dace.

3. Bincike akan kaddarorin rheological

3.1 Tasirin maida hankali da saurin juyawa

Ɗaukar tasirin juzu'i akan bayyanar danko naHEC a wurare daban-daban Ds = 0.11 a matsayin misali, ana iya ganin cewa yayin da adadin shear ya karu a hankali daga 0.05 zuwa 0.5 s-1, bayyanar danko.HEC Magani yana raguwa, musamman a 0.05 ~ 0.5s-1 bayyanannen danko ya ragu sosai daga 160MPa·s zuwa 40MPa·s, ƙarar ƙarfi, yana nuna cewaHEC Maganin ruwa mai ruwa ya nuna abubuwan rheological ba na Newtonian ba. Tasirin damuwa mai ƙarfi da aka yi amfani da shi shine don rage ƙarfin hulɗar tsakanin ɓangarori na lokaci da aka tarwatsa. Ƙarƙashin wasu sharuɗɗa, mafi girman ƙarfin, mafi girma da danko na fili.

Hakanan za'a iya ganin shi daga ɓangarorin 3% da 4%HEC mafita mai ruwa da ruwa cewa taro taro ne bi da bi 3% da 4% a daban-daban karfi rates. Bayyanar danko na bayani yana nuna cewa ƙarfin ƙarfinsa na haɓaka yana ƙaruwa tare da maida hankali. Dalili kuwa shi ne, yayin da maida hankali ya karu a cikin tsarin mafita, ƙin yarda da juna tsakanin kwayoyin halitta na babban sarkar.HEC kuma tsakanin sarƙoƙin ƙwayoyin cuta yana ƙaruwa, kuma ɗanƙon da ke bayyana yana ƙaruwa.

3.2 Tasirin yawa daban-daban na ƙara gishiri

Tattaunawa naHEC an gyara shi a 3%, kuma sakamakon ƙara gishiri NaCl akan abubuwan danko na maganin an bincika a cikin nau'i daban-daban.

Ana iya gani daga sakamakon cewa bayyanar danko yana raguwa tare da haɓakar ƙarar gishiri mai gishiri, yana nuna alamar polyelectrolyte. Wannan saboda wani ɓangare na Na+ a cikin maganin gishiri yana ɗaure da anion naHEC sarkar gefe. Mafi girman maida hankali na maganin gishiri, mafi girman matsayi na tsaka-tsaki ko garkuwar polyion ta hanyar juzu'i, da kuma raguwar ƙirjin wutar lantarki, yana haifar da raguwar nauyin cajin polyion. , Sarkar polymer yana raguwa kuma yana raguwa, kuma ƙaddamar da hankali yana raguwa.

3.3 Tasirin ƙara gishiri daban-daban akan

Ana iya ganin shi daga tasirin gishiri daban-daban guda biyu, Nacl da CaCl2, akan bayyanar danko.HEC Maganin cewa danko na fili yana raguwa tare da ƙari na gishiri da aka ƙara, kuma a daidai wannan adadin shear, bayyanar danko na fili.HEC Magani a cikin tsarin bayani na CaCl2 Danganin da ke bayyana yana da girma fiye da naHEC bayani a cikin tsarin mafita na NaCl. Dalili kuwa shine gishirin calcium wani nau'in ion ne, kuma yana da sauƙin ɗaure akan sarkar gefen polyelectrolyte. Haɗin ƙungiyar ammonium quaternary akanHEC tare da Cl- an rage shi, kuma garkuwar ya ragu, kuma nauyin cajin sarkar polymer ya fi girma, sakamakon hakar wutar lantarki a kan sarkar polymer ya fi girma, kuma an shimfiɗa sarkar polymer, don haka danko na fili ya fi girma.

4. Kammalawa

Dry shirye-shirye na cationic cellulose da aka maye gurbinsu shine hanyar shiri mai kyau tare da aiki mai sauƙi, haɓakar haɓakawa, da ƙarancin ƙazanta, kuma yana iya guje wa yawan amfani da makamashi, gurɓataccen muhalli, da kuma guba ta hanyar amfani da kaushi.

Maganin cationic cellulose ether yana gabatar da halaye na ruwan da ba na Newtonian ba kuma yana da halaye na raguwa; yayin da taro taro taro ya karu, bayyanar danko yana ƙaruwa; a cikin wani taro na maganin gishiri.HEC danko na fili yana ƙaruwa tare da karuwa da raguwa. A karkashin wannan shear kudi, da fili danko naHEC a cikin tsarin maganin CaCl2 ya fi naHEC a cikin tsarin bayani na NaCl.