Watsawa hydroxyethyl cellulose (HEC) aiki ne da ke buƙatar takamaiman matakai da za a bi, musamman a cikin kafofin watsa labarai masu ruwa. Madaidaicin tarwatsawa da matakan rushewa na iya tabbatar da tasirin amfaninsa. Hydroxyethyl cellulose ne yadu amfani a coatings, adhesives, kayan shafawa, man filayen da kuma sauran filayen saboda ta thickening, stabilization, film-forming, moisturizing da sauran ayyuka.
Gabatarwa zuwa Hydroxyethyl Cellulose
Hydroxyethyl cellulose wani ether ne mai narkewa wanda ba shi da ionic cellulose wanda aka yi ta hanyar gyaran sinadarai na cellulose na halitta. Yana da kyau kwarai solubility da thickening effects, kuma zai iya samar da wani m, danko mai ruwa bayani. Har ila yau, HEC yana da kyakkyawan jurewar ruwan gishiri, don haka ya dace da yanayin ruwan teku ko tsarin da ke dauke da gishiri. A lokaci guda, yana iya zama karko a kan kewayon pH mai faɗi kuma yanayin acid da alkali ba ya shafa.
Ka'idojin watsawa na hydroxyethyl cellulose
A cikin ruwa, tsarin watsawa na hydroxyethyl cellulose ya haɗa da matakai guda biyu: rigar watsawa da cikakken rushewa.
Rigar watsawa: Wannan shine tsari na yin barbashi na hydroxyethyl cellulose a ko'ina cikin ruwa. Idan an ƙara HEC kai tsaye zuwa ruwa, zai sha ruwa da sauri kuma ya haifar da ƙugiya mai ɗorewa a saman, wanda ke hana ƙarin rushewa. Sabili da haka, a lokacin aikin watsawa, dole ne a guje wa samuwar irin wannan kullun kamar yadda zai yiwu.
Cikakken narkewa: Bayan jika, ƙwayoyin cellulose a hankali suna yaduwa cikin ruwa don samar da mafita iri ɗaya. Gabaɗaya, HEC yana narkewa a hankali kuma yana iya ɗaukar sa'o'i da yawa ko ma ya fi tsayi, dangane da yanayin zafin ruwa, yanayin motsawa da girman ƙwayar cellulose.
Matakan watsawa na hydroxyethyl cellulose
Don tabbatar da cewa hydroxyethyl cellulose za a iya tarwatsa ko'ina, ana amfani da matakan watsawa da yawa:
1. Zabi ruwan zafi mai kyau
Zazzabi na ruwa muhimmin abu ne da ke shafar watsawa da rushewar hydroxyethyl cellulose. Gabaɗaya magana, ruwan sanyi ko ruwan zafin ɗaki shine mafi dacewa yanayin narkewa. Ruwan dumi (kimanin 30-40 ° C) yana taimakawa wajen hanzarta rushewa, amma yawan zafin jiki na ruwa (fiye da 50 ° C) na iya haifar da kumbura yayin tsarin rushewa, wanda zai shafi tasirin watsawa.
2. Maganin riga-kafi
Hydroxyethyl cellulose yana kula da samar da clumps da sauri a cikin ruwa, don haka pre-wetting magani hanya ce mai tasiri mai tasiri. Ta hanyar haɗa HEC da farko tare da kaushi mai narkewar ruwa (kamar ethanol, propylene glycol, da sauransu), ana jika HEC daidai gwargwado don hana shi daga ɗaukar ruwa kai tsaye da ƙirƙirar kullu. Wannan hanya na iya inganta ingantaccen aikin watsawa na gaba.
3. Sarrafa saurin ƙari
Lokacin watsawa hydroxyethyl cellulose, foda ya kamata a zuba a cikin ruwa sannu a hankali kuma a ko'ina yayin motsawa. Gudun mai motsi bai kamata ya yi tsayi da yawa ba don hana yawan kumfa. Idan ƙarin saurin yana da sauri, HEC bazai zama cikakke ba a tarwatse, yana samar da miceles marasa daidaituwa, wanda zai shafi tsarin rushewar gaba.
4. Tada hankali
Stirring yana ɗaya daga cikin mahimman matakai a cikin tsarin watsawa. Ana ba da shawarar yin amfani da mai motsi mai sauƙi don motsawa gabaɗaya don tabbatar da cewa ana iya rarraba hydroxyethyl cellulose a ko'ina cikin tsarin ruwa. Babban saurin motsawa na iya haifar da HEC don haɓakawa, ƙara lokacin rushewa, da kuma haifar da kumfa, yana tasiri ga gaskiyar bayani. Gabaɗaya, lokacin motsawa ya kamata a sarrafa tsakanin mintuna 30 zuwa sa'o'i da yawa, dangane da kayan aikin da ake amfani da su da zafin ruwa.
5. Ƙara electrolytes ko daidaita pH
Wani lokaci, tsarin narkar da hydroxyethyl cellulose na iya haɓaka ta hanyar ƙara adadin da ya dace na electrolytes (kamar salts) ko daidaita darajar pH. Wannan hanya ta dace musamman don aikace-aikacen da ke da manyan buƙatu don saurin rushewa. Duk da haka, adadin electrolyte ko pH yana buƙatar daidaitawa a hankali don kauce wa rinjayar aikin HEC.
Matsalolin gama gari da matakan magancewa
Agglomeration: Matsalar da aka fi sani da HEC ita ce haɓakawa yayin tsarin rushewa, wanda ke haifar da rushewar da ba ta cika ba. Don guje wa wannan, zaku iya amfani da hanyar riga-kafi ko haxa HEC tare da sauran kayan foda (kamar filaye, pigments, da sauransu) sannan ku ƙara shi cikin ruwa.
Yawan rushewar sannu a hankali: Idan adadin narkarwar yana jinkirin, zaku iya hanzarta rushewar ta hanyar haɓaka aikin motsa jiki ko ƙara yawan zafin ruwa daidai. A lokaci guda kuma, kuna iya ƙoƙarin yin amfani da HEC nan take, wanda aka yi masa magani na musamman don narkar da sauri cikin ɗan gajeren lokaci.
Matsalar kumfa: Ana samun kumfa cikin sauƙi yayin motsawa, yana shafar ma'aunin nuna gaskiya da ɗankowar mafita. A wannan yanayin, rage saurin motsawa ko ƙara adadin da ya dace na wakili na lalata zai iya rage samuwar kumfa.
Kariyar aikace-aikacen don hydroxyethyl cellulose
A cikin aikace-aikacen aikace-aikacen, nau'in da ya dace da hanyar ƙari na hydroxyethyl cellulose ya kamata a zaba bisa ga bukatun tsarin daban-daban. Alal misali, a cikin masana'antun masana'antu, hydroxyethyl cellulose ba kawai amfani da shi azaman thickener ba, amma kuma zai iya inganta rheology, samar da fim da kwanciyar hankali na sutura. A cikin masana'antar mai, ƙarfin gishiri na HEC yana da matukar mahimmanci, don haka zaɓin yana buƙatar daidaitawa bisa ga yanayin ƙasa.
Watsawa hydroxyethyl cellulose aiki ne mai fasaha sosai, kuma yana da mahimmanci don zaɓar hanyar watsawa mai dacewa bisa ga yanayin aikace-aikacen daban-daban. Ta hanyar sarrafa yawan zafin jiki na ruwa, riga-kafi mai dacewa, motsawa mai ma'ana da ƙara abubuwan da suka dace, zai iya tabbatar da cewa hydroxyethyl cellulose ya tarwatse a ko'ina kuma ya narkar da shi gaba ɗaya a cikin ruwa, ta haka yana ƙara haɓakawa da haɓaka ayyukansa.
Lokacin aikawa: Oktoba-23-2024