1. Matsala Bata
Hydroxyethyl cellulose (HEC)wani thickener da rheology modifier yadu amfani da latex fenti, wanda zai iya inganta danko, leveling da kuma ajiya kwanciyar hankali na fenti. Koyaya, a cikin aikace-aikacen aikace-aikacen, HEC wani lokaci yana haɓaka don samar da lu'ulu'u, yana shafar bayyanar, aikin gini har ma da kwanciyar hankali na fenti.
2. Nazarin abubuwan da ke haifar da samuwar crystal
Rashin isasshen narkewa: Rushewar HEC a cikin ruwa yana buƙatar takamaiman yanayin motsawa da lokaci. Rashin isasshen narkewa na iya haifar da wuce gona da iri na gida, don haka haifar da hazo crystalline.
Matsalar ingancin ruwa: Yin amfani da ruwa mai ƙarfi ko ruwa tare da ƙarin ƙazanta zai haifar da HEC ta amsa tare da ions ƙarfe (kamar Ca²⁺, Mg²⁺) don samar da hazo maras narkewa.
Ƙimar da ba ta da ƙarfi: Wasu abubuwan da ake ƙarawa a cikin dabara (kamar masu kiyayewa, masu rarrabawa) na iya amsawa da bai dace da HEC ba, yana haifar da hazo da samar da lu'ulu'u.
Yanayin ajiyar da bai dace ba: Yawan zafin jiki mai yawa ko ajiya na dogon lokaci na iya haifar da HEC don sake sakewa ko takura, musamman a cikin yanayin zafi da zafi mai zafi.
Canje-canjen ƙimar pH: HEC yana kula da pH, kuma mahalli na acidic ko alkaline na iya lalata ma'auni na narkar da shi kuma ya haifar da hazo.
3. Magani
Dangane da matsalolin da ke sama, ana iya ɗaukar matakai masu zuwa don gujewa ko rage lamarin HEC samar da lu'ulu'u a cikin fenti na latex:
Inganta hanyar rushewar HEC
Yi amfani da hanyar watsawa: da farko sannu a hankali yayyafa HEC a cikin ruwa a ƙarƙashin ƙananan saurin motsawa don guje wa tashin hankali wanda ya haifar da shigarwar kai tsaye; sai a bar shi ya tsaya sama da mintuna 30 don ya jika sosai, sannan a juye shi da sauri har sai ya narke gaba daya.
Yi amfani da hanyar narkar da ruwan zafi: narkar da HEC a cikin ruwan dumi a 50-60 ℃ na iya hanzarta rushewar tsari, amma kauce wa matsanancin yanayin zafi (fiye da 80 ℃), in ba haka ba yana iya haifar da lalacewar HEC.
Yi amfani da abubuwan haɗin gwiwar da suka dace, kamar ƙaramin adadin ethylene glycol, propylene glycol, da dai sauransu, don haɓaka daidaituwar narkar da HEC da rage crystallization lalacewa ta hanyar wuce kima na gida taro.
Inganta ingancin ruwa
Yi amfani da ruwa mai laushi ko ruwa mai laushi maimakon ruwan famfo na yau da kullun don rage tsangwama na ions karfe.
Ƙara adadin da ya dace na wakili mai lalata (irin su EDTA) zuwa tsarin fenti na latex zai iya daidaita yanayin yadda ya kamata kuma ya hana HEC daga amsawa tare da ions karfe.
Inganta ƙirar ƙira
A guji abubuwan da ba su dace da HEC ba, kamar wasu abubuwan kiyaye gishiri mai girma ko wasu takamaiman masu rarrabawa. Ana ba da shawarar yin gwajin dacewa kafin amfani.
Sarrafa ƙimar pH na fenti na latex tsakanin 7.5-9.0 don hana HEC daga hazo saboda tsananin jujjuyawar pH.
Sarrafa yanayin ajiya
Wurin ajiya na fenti na latex ya kamata ya kula da matsakaicin zafin jiki (5-35 ℃) kuma ya guje wa yanayin zafi mai tsayi ko ƙasa mai tsayi.
Ajiye shi don hana ƙawancewar danshi ko gurɓatawa, guje wa haɓakar gida a cikin tattarawar HEC saboda ƙarancin ƙarfi, da haɓaka crystallization.
Zaɓi nau'in HEC daidai
Daban-daban na HEC suna da bambance-bambance a cikin solubility, danko, da dai sauransu. Ana bada shawara don zaɓar HEC tare da babban matsayi na maye gurbin da ƙananan danko don rage halinsa na crystallize a babban taro.
Ta hanyar inganta yanayin rushewarHEC, Inganta ingancin ruwa, daidaita ma'auni, sarrafa yanayin ajiya da kuma zaɓar nau'in HEC da ya dace, ƙirƙirar lu'ulu'u a cikin fenti na latex za a iya kauce masa yadda ya kamata ko rage shi, ta haka ne inganta kwanciyar hankali da aikin ginin latex fenti. A cikin ainihin tsarin samarwa, gyare-gyaren da aka yi niyya ya kamata a yi daidai da takamaiman yanayi don tabbatar da ingancin samfurin da ƙwarewar mai amfani.
Lokacin aikawa: Maris 26-2025