Hydroxyethyl cellulose wani sinadari ne mai matsakaicin danko zuwa babban sinadarin cellulose ether, wanda ake amfani da shi azaman mai kauri da kuma mai daidaita launi don shafa ruwa, musamman lokacin da dankowar ajiya ta yi yawa kuma dankowar amfani ta yi ƙasa. Cellulose ether yana da sauƙin warwatsewa a cikin ruwan sanyi tare da darajar pH ≤ 7, amma yana da sauƙin taruwa a cikin ruwan alkaline tare da ƙimar pH ≥ 7.5, don haka dole ne mu kula da warwatsewar cellulose ether.
Amfanin da kuma illolin hydroxyethyl cellulose:
1. Na'urar hana enzyme wanda ba ta ionic ba ce, wadda za a iya amfani da ita a cikin nau'ikan pH iri-iri (PH=2-12).
2. Yana da sauƙin warwatsewa, ana iya ƙara shi kai tsaye a cikin nau'in busasshen foda ko kuma a cikin nau'in slurry lokacin niƙa launuka da abubuwan cikawa.
3. Gine-gine mai kyau. Yana da fa'idodin adana aiki, ba shi da sauƙin digawa da ratayewa, da kuma juriyar fesawa mai kyau.
4. Kyakkyawan jituwa da nau'ikan surfactants da abubuwan kiyayewa da ake amfani da su a fenti na latex.
5. Dankowar ajiya tana da ƙarfi, wanda zai iya hana dankowar fenti na latex raguwa saboda ruɓewar enzymes a cikin hydroxyethyl cellulose gabaɗaya.
Halayen Hydroxyethyl Cellulose
Hydroxyethyl cellulose ether wani polymer ne mai narkewar ruwa wanda ba ionic ba. Foda ce fari ko rawaya mai haske wadda ke gudana cikin sauƙi. Gabaɗaya ba ta narkewa a cikin yawancin sinadarai masu narkewa na halitta.
1. HEC yana narkewa a cikin ruwan zafi ko ruwan sanyi, kuma baya zubewa a yanayin zafi mai yawa ko tafasa, wanda hakan ke sa ya sami nau'ikan halaye masu yawa na narkewa da ɗanko, da kuma gelation mara zafi.
2. Ba shi da ionic kuma yana iya rayuwa tare da sauran polymers masu narkewa cikin ruwa, surfactants, da gishiri. Yana da kyakkyawan kauri na colloidal don maganin da ke ɗauke da electrolytes masu yawan taro.
3. Ƙarfin riƙe ruwa ya ninka na methyl cellulose sau biyu, kuma yana da ingantaccen tsarin kwarara.
4. Idan aka kwatanta da methyl cellulose da aka sani da hydroxypropyl methyl cellulose, ikon warwatsewar HEC shine mafi muni, amma ikon kariya na colloid shine mafi ƙarfi (mai launi).
Kauri
Yana shafar iya aiki, kamar: iyawar coatability, juriyar fesawa, juriyar asara; tsarin cibiyar sadarwa na musamman na cellulose ether na iya daidaita foda a cikin tsarin rufewa, rage jinkirinsa, da kuma sa tsarin ya sami ingantaccen tasirin ajiya.
Kyakkyawan juriyar ruwa
Bayan fenti ya bushe gaba ɗaya, yana da kyakkyawan juriya ga ruwa. Wannan musamman yana nuna ƙimar juriyarsa ga ruwa a cikin tsarin samar da PVC mai yawan gaske. Daga samfuran ƙasashen waje zuwa na China, a cikin wannan tsarin PVC mai yawan gaske, adadin cellulose ether da aka ƙara shine ainihin 4-6‰.
kyakkyawan riƙe ruwa
Hydroxyethyl cellulose na iya tsawaita lokacin fallasa da kuma sarrafa lokacin bushewa don samun ingantaccen samuwar fim; daga cikinsu, riƙe ruwa na methyl cellulose da hypromellose yana raguwa sosai sama da 40°C, kuma wasu bincike na ƙasashen waje sun yi imanin cewa ana iya rage shi da kashi 50%, yuwuwar matsaloli a lokacin rani da yawan zafin jiki yana ƙaruwa sosai.
Kyakkyawan kwanciyar hankali don rage kwararar fenti
A kawar da sedimentation, syneresis da flocculation; a halin yanzu, hydroxyethyl cellulose ether wani nau'in samfurin ne wanda ba ionic ba. Ba ya amsawa da wasu ƙarin abubuwa a cikin tsarin.
Kyakkyawan jituwa tare da tsarin launuka masu yawa
Kyakkyawan jituwa tsakanin masu launi, launuka da fillers; hydroxyethyl cellulose ether yana da mafi kyawun haɓakar launi, amma bayan an gyara, kamar methyl da ethyl, za a sami ɓoyayyun haɗarin da ke tattare da dacewa da pigment.
Kyakkyawan jituwa tare da kayan albarkatu daban-daban
Ana iya amfani da shi a cikin tsarin hadawa daban-daban na coatings.
Babban aikin hana ƙwayoyin cuta
Ya dace da tsarin silicate
Lokacin Saƙo: Fabrairu-02-2023