A cikin zane-zanen fenti, hydroxyethyl cellulose (HEC) shine mai kauri na yau da kullun da gyare-gyaren rheology wanda zai iya inganta kwanciyar hankali na ajiya, daidaitawa da abubuwan gini na fenti. Domin ƙara hydroxyethyl cellulose zuwa fenti da kuma tabbatar da cewa yana aiki yadda ya kamata, ana buƙatar bin wasu matakai da matakan kariya. Takamammen tsari shine kamar haka:
1. Properties na hydroxyethyl cellulose
Hydroxyethyl cellulose ne mai ba-ionic ruwa mai narkewa polymer tare da kyau kwarai thickening, film-forming, ruwa-retaining, dakatar da emulsifying Properties. An fi amfani da shi a cikin fenti na ruwa, adhesives, yumbu, tawada da sauran kayayyaki. Ana samun shi ta maye gurbin wani ɓangare na ƙungiyoyin hydroxyl a kan sarkar kwayoyin halitta ta cellulose tare da kungiyoyin hydroxyethyl, don haka yana da ruwa mai kyau.
Babban ayyuka na HEC a cikin fenti sune:
Tasiri mai kauri: Ƙara danko na fenti, hana fenti daga sagging, da kuma sanya shi yana da kyawawan kayan gini.
Tasirin dakatarwa: Yana iya ko'ina tarwatsawa da daidaita tsayayyen barbashi kamar su pigments da filler don hana su zama.
Tasirin riƙewar ruwa: Haɓaka riƙewar ruwa na fim ɗin shafa, tsawaita lokacin buɗewa, da haɓaka tasirin fenti.
Gudanar da Rheology: daidaita ruwa da daidaitawar sutura, da inganta matsalar alamar goga yayin gini.
2. Ƙara matakan hydroxyethyl cellulose
Matakin warwarewa A cikin ainihin aiki, hydroxyethyl cellulose yana buƙatar tarwatsawa daidai gwargwado kuma a narkar da shi ta hanyar tsarin da aka rigaya ya rushe. Domin tabbatar da cewa cellulose zai iya taka rawar da ya taka, yawanci ana bada shawara don narkar da shi a cikin ruwa da farko, maimakon ƙara shi kai tsaye zuwa rufi. Takamaiman matakan sune kamar haka:
Zaɓi ƙaushi mai dacewa: yawanci ana amfani da ruwa mai narkewa azaman ƙarfi. Idan akwai wasu kaushi na kwayoyin halitta a cikin tsarin sutura, yanayin rushewar yana buƙatar daidaitawa bisa ga kaddarorin masu ƙarfi.
A hankali yayyafa hydroxyethyl cellulose: Sannu a hankali kuma a yayyafa hydroxyethyl cellulose foda yayin motsa ruwa don hana haɓakawa. Gudun motsi ya kamata ya kasance a hankali don guje wa rage raguwar adadin cellulose ko kafa "colloids" saboda wuce gona da iri.
Rushewar Tsaye: Bayan yayyafa hydroxyethyl cellulose, ana buƙatar a bar shi ya tsaya na ɗan lokaci (yawanci minti 30 zuwa sa'o'i da yawa) don tabbatar da cewa cellulose ya kumbura gaba ɗaya kuma ya narke cikin ruwa. Lokacin rushewa ya dogara da nau'in cellulose, zafin jiki mai ƙarfi da yanayin motsawa.
Daidaita yanayin zafi: Ƙara yawan zafin jiki yana taimakawa wajen hanzarta tsarin rushewar hydroxyethyl cellulose. Yawancin lokaci ana bada shawara don sarrafa zafin jiki na bayani tsakanin 20 ℃-40 ℃. Yawan zafin jiki na iya haifar da lalacewar cellulose ko tabarbarewar bayani.
Daidaita ƙimar pH na maganin Solubility na hydroxyethyl cellulose yana da alaƙa da ƙimar pH na maganin. Yawancin lokaci yana narkar da mafi kyau a ƙarƙashin tsaka tsaki ko ɗan ƙaramin alkaline, tare da ƙimar pH tsakanin 6-8. A lokacin tsarin rushewa, ana iya daidaita ƙimar pH ta ƙara ammonia ko wasu abubuwan alkaline kamar yadda ake buƙata.
Ƙara bayani na hydroxyethyl cellulose zuwa tsarin sutura Bayan rushewa, ƙara bayani zuwa shafi. A yayin aiwatar da ƙari, ya kamata a ƙara a hankali kuma a ci gaba da motsawa don tabbatar da isasshen haɗuwa tare da matrix mai rufi. A lokacin tsarin hadawa, ya zama dole don zaɓar saurin motsawa mai dacewa bisa ga tsarin daban-daban don hana tsarin daga kumfa ko lalata cellulose saboda tsananin ƙarfi.
Daidaita danko Bayan ƙara hydroxyethyl cellulose, za a iya sarrafa danko na sutura ta hanyar daidaita adadin da aka kara. Gabaɗaya, adadin hydroxyethyl cellulose da aka yi amfani da shi yana tsakanin 0.3% -1.0% (dangane da jimlar nauyin murfin), kuma takamaiman adadin da aka ƙara yana buƙatar daidaitawa ta gwaji bisa ga buƙatun ƙira na sutura. Maɗaukakin adadin ƙarawa zai iya haifar da sutura don samun babban danko da rashin ruwa mara kyau, yana shafar aikin ginin; yayin da rashin isassun kari bazai iya taka rawar kauri da dakatarwa ba.
Gudanar da matakan daidaitawa da gwaje-gwajen kwanciyar hankali na ajiya Bayan ƙara hydroxyethyl cellulose da daidaita tsarin sutura, aikin ginin rufi yana buƙatar gwadawa, gami da matakin daidaitawa, sag, sarrafa alamar buroshi, da sauransu. lura da sedimentation na shafi bayan tsayawa na wani lokaci, da danko canji, da dai sauransu, don kimanta zaman lafiyar hydroxyethyl cellulose.
3. Hattara
Hana agglomeration: A lokacin aikin rushewa, hydroxyethyl cellulose yana da sauƙin sha ruwa da kumbura, don haka yana buƙatar yayyafa shi cikin ruwa a hankali kuma a tabbatar da isasshen motsawa don hana samuwar lumps. Wannan babbar hanyar haɗin yanar gizo ce a cikin aiki, in ba haka ba yana iya shafar ƙimar rushewa da daidaituwa.
Guji ƙarfin ƙarfi mai ƙarfi: Lokacin ƙara cellulose, gudun kada ya yi tsayi da yawa don gujewa lalata sarkar kwayar halitta ta cellulose saboda ƙarfin juzu'i mai yawa, yana haifar da raguwar aikin sa mai kauri. Bugu da ƙari, a cikin samar da sutura na gaba, yin amfani da kayan aiki mai mahimmanci ya kamata kuma a kauce masa kamar yadda zai yiwu.
Sarrafa yawan zafin jiki: Lokacin narkar da hydroxyethyl cellulose, zafin ruwa bai kamata ya yi girma ba. An kullum shawarar don sarrafa shi a 20 ℃-40 ℃. A karkashin yanayin zafi mai yawa, cellulose na iya raguwa, yana haifar da raguwa a cikin tasirinsa mai kauri da danko.
Ma'ajiyar Magani: Maganin hydroxyethyl cellulose gabaɗaya yana buƙatar a shirya kuma a yi amfani da su nan da nan. Ajiye na dogon lokaci zai shafi danko da kwanciyar hankali. Yawancin lokaci ana ba da shawarar shirya maganin da ake buƙata a ranar samar da fenti don kula da mafi kyawun aikinsa.
Bugu da ƙari na hydroxyethyl cellulose zuwa fenti ba kawai tsari ne mai sauƙi na jiki ba, amma kuma yana buƙatar haɗuwa tare da ainihin bukatun tsari da ƙayyadaddun aiki don tabbatar da cewa an yi amfani da kauri, dakatarwa da kaddarorin ruwa. A yayin aiwatar da ƙari, kula da matakin farko na rushewa, kula da yanayin zafi da ƙimar pH, da cikakken haɗuwa bayan ƙari. Wadannan cikakkun bayanai za su shafi inganci da kwanciyar hankali na fenti kai tsaye.
Lokacin aikawa: Satumba-19-2024