Sodium carboxymethyl cellulose, Turanci gajarta CMC, wanda aka fi sani da "methyl" a cikin yumbu masana'antu, wani anionic abu, wani farin ko dan kadan rawaya foda sanya na halitta cellulose a matsayin albarkatun kasa da kuma chemically modified. . CMC yana da kyawawa mai narkewa kuma ana iya narkar da shi cikin bayani mai haske da daidaitaccen ɗanɗano a cikin ruwan sanyi da ruwan zafi.
1. Takaitaccen bayani game da aikace-aikacen CMC a cikin yumbu
1.1. Aikace-aikacen CMC a cikin yumbu
1.1.1, ƙa'idar aiki
CMC yana da tsari na musamman na polymer madaidaiciya. Lokacin da aka ƙara CMC a cikin ruwa, rukuninsa na hydrophilic (-COONa) yana haɗuwa da ruwa don samar da Layer na warwarewa, ta yadda kwayoyin CMC suke watsewa a cikin ruwa. CMC polymers sun dogara da haɗin gwiwar hydrogen da dakarun van der Waals. Tasirin yana samar da tsarin cibiyar sadarwa, don haka yana nuna haɗin kai. Ana iya amfani da takamaiman CMC na jiki azaman kayan haɓakawa, filastik, da wakili mai ƙarfafawa ga jikin kore a cikin masana'antar yumbu. Ƙara adadin da ya dace na CMC a cikin billet na iya ƙara ƙarfin haɗin kai na billet, sanya billet ɗin cikin sauƙi don ƙirƙirar, ƙara ƙarfin sassauƙa da sau 2 zuwa 3, da haɓaka kwanciyar hankali na billet, ta haka ne ƙara haɓaka samfuri masu inganci. adadin yumbura da rage farashin sarrafa kayan aiki. . A lokaci guda, saboda ƙarin CMC, yana iya haɓaka saurin sarrafa jikin kore da rage yawan kuzarin samarwa. Hakanan zai iya sa danshin da ke cikin billet ya ƙafe daidai gwargwado kuma ya hana bushewa da fashewa. Musamman lokacin da aka yi amfani da shi a kan manyan katako na bene na bene da kuma kayan kwalliyar bulo, tasirin ya fi kyau. bayyane. Idan aka kwatanta da sauran koren abubuwan ƙarfafa jiki, koren jiki na musamman CMC yana da halaye masu zuwa:
(1) Ƙaramin adadin adadin: adadin adadin gabaɗaya bai wuce 0.1% ba, wanda shine 1/5 zuwa 1/3 na sauran abubuwan ƙarfafa jiki, kuma ƙarfin flexural na jikin kore yana inganta sosai, kuma ana iya rage farashin. a lokaci guda.
(2) Kyakykyawan kadarorin konewa: kusan ba a bar toka bayan konewa, kuma babu sauran abin da ba ya shafar launin ruwan.
(3) Kyakkyawan kayan dakatarwa: Hana kayan da bakararre da man launi daga zama, da sanya manna ya watse daidai gwargwado.
(4) Anti-abrasion: A cikin aikin niƙa ball, sarkar kwayoyin ba ta da lalacewa.
1.1.2, hanyar ƙarawa
Babban adadin adadin CMC a cikin billet shine 0.03-0.3%, wanda za'a iya daidaita shi daidai daidai da ainihin buƙatu. Don laka tare da kayan da bakararre da yawa a cikin dabarar, ana iya ƙara CMC zuwa injin ƙwallon ƙwallon don niƙa tare da laka, kula da rarrabuwa na uniform, don kada ya zama da wahala a narke bayan agglomeration, ko pre- narkar da CMC da ruwa a cikin rabo na 1:30 Ƙara shi a cikin injin ball kuma a haxa shi daidai 1-5 hours kafin milling.
1.2. Aikace-aikacen CMC a cikin slurry glaze
1.2.1. Ƙa'idar aikace-aikacen
CMC don slurry glaze shine mai daidaitawa da ɗaure tare da kyakkyawan aiki. Ana amfani dashi a cikin glaze na ƙasa da saman glaze na yumbura fale-falen buraka, wanda zai iya ƙara ƙarfin haɗin gwiwa tsakanin glaze slurry da jiki. Saboda glaze slurry yana da sauƙin haɓakawa kuma yana da rashin kwanciyar hankali, CMC da daban-daban Daidaitawar irin wannan glaze yana da kyau, kuma yana da kyakkyawan watsawa da colloid mai karewa, don haka glaze yana cikin yanayin watsawa sosai. Bayan an ƙara CMC, za a iya ƙara yawan tashin hankali na glaze, za a iya hana ruwa daga yaduwa daga glaze zuwa jikin kore, za a iya ƙara santsi na glaze, da tsagewa da karaya yayin aikin sufuri da ke haifar da shi. rage ƙarfin jikin kore bayan glazing za a iya kauce masa. , Hakanan za'a iya rage abubuwan da ke faruwa a kan glaze bayan harbe-harbe.
1.2.2. Hanyar ƙarawa
Adadin CMC da aka ƙara a cikin glaze na ƙasa da saman glaze gabaɗaya shine 0.08-0.30%, kuma ana iya daidaita shi bisa ga ainihin buƙatu yayin amfani. Da farko sanya CMC zuwa 3% na ruwa bayani. Idan ana buƙatar adana shi na kwanaki da yawa, wannan bayani yana buƙatar ƙarawa tare da adadin abubuwan da suka dace da kuma sanya shi a cikin akwati da aka rufe, adana a ƙananan zafin jiki, sa'an nan kuma haxa shi da glaze daidai.
1.3. Aikace-aikacen CMC a cikin bugu glaze
1.3.1. CMC na musamman don buga glaze yana da kauri mai kyau, rarrabawa da kwanciyar hankali. Wannan CMC na musamman yana ɗaukar sabon fasaha, yana da kyakkyawar solubility, babban fahimi, kusan babu wani abu maras narkewa, kuma yana da kyawawan kaddarorin ƙwanƙwasa ƙarfi da lubricity, yana haɓaka haɓaka ɗab'i na glaze na bugawa, rage sabon abu na mannewa da toshe allon, rage lambar. na goge-goge, bugu mai santsi yayin aiki, bayyanannun alamu, da daidaiton launi mai kyau.
1.3.2. Matsakaicin ƙara yawan ƙarar glaze bugu shine 1.5-3%. Ana iya shigar da CMC tare da ethylene glycol sannan a zuba ruwa don ya riga ya narkar da shi. Hakanan za'a iya ƙara shi da 1-5% sodium tripolyphosphate da kayan canza launi tare. Dry Mix, sa'an nan kuma narkar da da ruwa, ta yadda kowane irin kayan za a iya narkar da cikakken a ko'ina.
1.4. Aikace-aikacen CMC a cikin glaze mai ƙyalli
1.4.1. Ƙa'idar aikace-aikacen
Gwargwadon zubar jini yana ƙunshe da gishiri mai narkewa da yawa, kuma wasu daga cikinsu suna da ɗan acidic. Nau'in nau'in CMC na musamman don glaze na jini yana da kyakkyawan yanayin juriya na acid da gishiri, wanda zai iya kiyaye dankon glaze na zubar da jini a lokacin amfani da sanyawa, kuma ya hana shi lalacewa saboda canje-canje a cikin danko. Yana rinjayar bambance-bambancen launi, kuma mai narkewar ruwa, raƙuman raƙuman ruwa da kuma riƙewar ruwa na CMC na musamman don zubar da jini yana da kyau sosai, wanda ke taimakawa wajen kula da kwanciyar hankali na jini.
1.4.2. Ƙara hanya
Narkar da CMC tare da ethylene glycol, wani ɓangare na ruwa da wakili mai rikitarwa da farko, sa'an nan kuma haxa tare da narkar da maganin launi.
2. Matsalolin da ya kamata a kula da su wajen samar da CMC a cikin yumbu
2.1. Daban-daban na CMC suna da ayyuka daban-daban a cikin samar da yumbu. Zaɓin daidai zai iya cimma manufar tattalin arziki da ingantaccen aiki.
2.2. A saman glaze da bugu glaze, ba dole ba ne ka yi amfani da low-tsarki kayayyakin CMC don arha, musamman a cikin bugu glaze, dole ne ka zabi high-tsarki CMC tare da high tsarki, mai kyau acid da gishiri juriya, da kuma high nuna gaskiya don hana glaze Ripples da pinholes. bayyana a saman. A lokaci guda kuma, yana iya hana abin da ya faru na toshe net, rashin daidaituwa da bambancin launi yayin amfani.
2.3. Idan zafin jiki ya yi girma ko kuma ana buƙatar sanya slurry na glaze na dogon lokaci, ya kamata a ƙara abubuwan kiyayewa.
3. Analysis na kowa matsaloli naCMC a cikin yumbusamarwa
3.1. Rashin ruwa na laka ba shi da kyau, kuma yana da wuya a saki manne.
Saboda dankowar kansa, CMC zai sa dankon laka ya yi yawa, yana da wuya a saki laka. Maganin shine daidaita adadin da nau'in coagulant. Ana ba da shawarar dabarar decoagulant mai zuwa: (1) sodium tripolyphosphate 0.3%; (2) sodium tripolyphosphate 0.1% + gilashin ruwa 0.3%; (3) humic acid Sodium 0.2% + sodium tripolyphosphate 0.1%
3.2. Gilashin slurry da tawada bugu sirara ne.
Dalilan da suka sa glaze slurry da tawada bugu suka zama kamar haka: (1) slurry na glaze ko tawada na bugu yana lalata da ƙananan ƙwayoyin cuta, wanda ya sa CMC ba ta da inganci. Maganin shine a wanke akwati na glaze slurry ko tawada sosai, ko kuma ƙara abubuwan kiyayewa kamar su formaldehyde da phenol. (2) A ƙarƙashin ci gaba da motsawa a ƙarƙashin ƙarfin ƙarfi, danko yana raguwa. Ana ba da shawarar ƙara maganin ruwa na CMC don daidaitawa lokacin amfani.
3.3. Manna gidan yanar gizon lokacin amfani da glaze na bugawa.
Maganin shine a daidaita adadin CMC don dankowar glaze ɗin bugawa ya zama matsakaici, kuma idan ya cancanta, ƙara ƙaramin adadin ruwa don motsawa daidai.
3.4. Akwai lokuta da yawa na toshe hanyar sadarwa da tsaftacewa.
Mafita ita ce inganta gaskiya da narkewar CMC; bayan an shirya man bugu, sai a wuce ta ramin 120-mesh, kuma man da ake bugawa yana buƙatar wucewa ta hanyar 100-120 raga; daidaita danko na bugu glaze.
3.5. Riƙewar ruwa ba ta da kyau, kuma fuskar furen za ta rushe bayan bugu, wanda zai shafi bugu na gaba.
Maganin shine ƙara yawan adadin glycerin a cikin tsarin shirye-shiryen man bugu; yi amfani da matsakaici da ƙananan danko CMC tare da babban canji (mai kyau maye gurbin uniformity) don shirya bugu mai.
Lokacin aikawa: Janairu-04-2023