Hydroxyethyl cellulose (hec) ndiopanda poizoni, kusungunuka police-madzi wochokera ku cellulose pogwiritsa ntchito mankhwala. Zimakhala zikugwiritsidwa ntchito kwambiri m'mafakitale osiyanasiyana chifukwa cha zinthu zake zapadera, monga kukula, kukhazikika, komanso luso lopanga mafilimu. Muzofunsidwa kumene ph
Kukhazikika kwa hec kumatanthauza kukhoza kwake kukhalabe ndi umphumphu, miyambo, ndikugwirira ntchito magawo osiyanasiyana a ma pH. Kukhazikika kumeneku kumayambitsa zovuta monga malonda anu, mankhwala ogulitsa, zokutira, ndi zida zomangira, pomwe Ph wa malo oyandikana amatha kusiyanasiyana.
Kapangidwe:
Hec nthawi zambiri amapangidwa ndi ma cellulose ndi ethylene oxide pansi pa milkingine. Njirayi imabweretsa m'malo mwa magulu a hydroxyl a ma cellulose msana ndi hydroxyethyl (--Och2ch2oh). Mulingo wa zolowa m'malo (DS) akuwonetsa kuchuluka kwa ma hydroxyethyl amagulu pa anilrogluc unit mu cellulose unyolo.
Katundu:
Kusungunuka: Hec amasungunuka m'madzi ndipo amapanga zomveka, zothetsera ma viscous.
Ma Uku: Imawonetsa machitidwe a pseudoplastic kapena shear, kutanthauza kuti ma viscy ake amachepetsa nkhawa. Katunduyu amapangitsa kuti ikhale yothandiza pakugwiritsa ntchito komwe kutaya kumafunika, monga zopatulikitsa.
Kukula: Hec kumapangitsa kuti mawonekedwe akukometsetsa, ndikupangitsa kukhala kofunikira ngati wothandizira kukula kosiyanasiyana.
Kupanga mafilimu: imatha kupanga mafilimu osinthika komanso owoneka bwino akamawuma, omwe ndi opindulitsa pakugwiritsa ntchito ngati azitsama ndi zokutira.
Khalidwe la PHC
Kukhazikika kwa hec kumachitika ndi zinthu zingapo, kuphatikizapo kapangidwe kake kamene kamapangidwe kwa polymer, zokhudzana ndi malo ozungulira, ndipo zowonjezera zilizonse zimakhalapo popanga.
Khalidwe la PH la Hec mu pH imachitika:
1.
Pa acidic pH, hec nthawi zambiri imakhala yokhazikika koma imatha kupezeka hydrolysis pa nthawi yowonjezereka pansi pa zovuta. Komabe, mu mapulogalamu othandiza kwambiri, monga zokuthandizani pazinthu zawo komanso zokutira, pomwe acidic PH imakumana, hec imakhazikika mkati mwa mankhunje (ph 3). Kupitilira PH 3, chiopsezo cha hydrolysis chimakula, chimatsogolera kutsika pang'onopang'ono kwa ma viru ndi magwiridwe antchito. Ndikofunikira kuwunika pH ya ma pH a ma pH omwe ali ndi Hec ndikuwasintha kuti apitilize kukhala okhazikika.
2. Ph:
Hec akuwonetsa kukhazikika kwabwino kwambiri pansi pa pH Phtundu iyi imakhala yofala mu ntchito zambiri, kuphatikizapo zodzoladzola, mankhwala opangira mankhwala, ndi malonda apakhomo. Mitundu yokhala ndi hec-yokhala ndi mafayilo awo, kukulitsa katundu, komanso magwiridwe onse munthawi zonsezi. Komabe, zinthu monga kutentha ndi ionic mphamvu zimatha kukopa bata ndipo iyenera kuganiziridwa pakupanga chitukuko.
3. Alkaline ph:
Hec sakhala wokhazikika pansi pa mikhalidwe ya alkalineine poyerekeza ndi acidic kapena andale. Pamlingo wapamwamba wa PH Alkaline hydrolysis alumikizano pakati pa cellulose msana ndi magulu a hydroxyethyl amatha kuchitika, zomwe zimayambitsa chiwindi ndikuchepetsa mawonekedwe. Chifukwa chake, mu mapangidwe amchere monga zopatsira kapena zinthu zomangamanga, njira zina kapena zotsutsa zimakonda kuchitira hec.
Zinthu zomwe zimapangitsa kuti pH
Zinthu zingapo zimatha kusintha phyo ya Hec:
Madigirikiti olowa m'malo (DS): Hec ndi mfundo zapamwamba zimakonda kukhala okhazikika pamagulu a Hydroxyll ndi ma hydroxyethyl amadzi, zomwe zimayambitsa hydrolysis.
Kutentha kokwera kumatha kuthamanga kumathandizirana ndi mankhwala, kuphatikizapo hydrolysis. Chifukwa chake, kusunga malo oyenera komanso kutentha kwa makonzedwe ndikofunikira posungira mafa a hec-zokhala ndi mawonekedwe.
Mphamvu ya Ionic: Mchere wambiri wa mchere kapena ma mayoke ena opanga amatha kusintha kusungunuka kwa Hec pokhudza kuchotsedwa kwake ndikugwirizana ndi mamolekyulu amadzi. Mphamvu ya Ionic iyenera kukhala yokhazikika kuti muchepetse mavuto.
Zowonjezera: Zowonjezera zowonjezera monga zowonjezera, zoteteza, kapena othandizira amatha kusokoneza mafa a hec. Kuyesa kwa kuphatikizika kuyenera kuchitika kuti zitsimikizidwe kuti kuphatikizidwa ndi kukhazikika.
Mapulogalamu ndi Maganizidwe Akupanga
Kuzindikira kukhazikika kwa kanjezo ndikofunikira kwa okonzako kumayiko osiyanasiyana.
Nawa malingaliro apadera:
Zogulitsa Zaumwini: Mu shampoos, zowongolera, komanso zotupa, zimasungabe kukhazikika (nthawi zambiri osalowerera) amatsimikizira kuti HEC.
Mankhwala ogulitsa: Hec amagwiritsidwa ntchito mu mikangano ya pakamwa, mafinya a ophthalmic, komanso mawonekedwe apamwamba. Mapangidwe ayenera kupangidwa ndikusungidwa pansi pamikhalidwe yomwe imasunga Hec kukhazikika kwa Hec kuti awonetsetse kuti malonda ndi moyo wa alumali.
Zovala ndi utoto: Hec imagwiritsidwa ntchito ngati phsuology yodzisintha komanso yotsitsimutsa mumawu ovala madzi ndi zokutira. Opanga a Forcelators ayenera kusamala PH zofunika ndi njira zina zogwirizira monga mafakisoni, kukhazikitsa, ndi mafomu a makanema.
Zipangizo Zomanga: Mu cemeat miyambo, Hec imagwira ngati mankhwala osungira madzi ndikugwiritsa ntchito kugwirira ntchito. Komabe, mikhalidwe ya alkalinine mu simenti imatha kutsutsa Hec kukhazikika kwa Hec, kufunikira kusankha mosamala ndi kusinthasintha.
Hydroxyethyl cellulose (hec) imapereka katundu wofunikira wa Rheological komanso magwiritsidwe antchito osiyanasiyana. Kumvetsetsa za pH Pomwe Hec akuwonetsa kukhazikika bwino mokhazikika mu ph pH Posankha gawo loyenerera la hec, maofesi opanga njira zopangira, ndikukhazikitsa makonzedwe osungirako, mphamvu zopanga zimatha kukulira zabwino za hec padziko lonse lapansi.
Post Nthawi: Mar-29-2024