Matsalar raguwar danko yayin adana fenti matsala ce da aka saba gani, musamman bayan adanawa na dogon lokaci, dankowar fenti yana raguwa sosai, wanda ke shafar aikin gini da ingancin samfur. Rage danko yana da alaƙa da abubuwa da yawa, kamar zafin jiki, danshi, canjin sinadaran narkewa, lalacewar polymer, da sauransu, amma hulɗa da cellulose ether mai kauri yana da matuƙar muhimmanci.
1. Muhimmancin aikin cellulose ether
Cellulose ether wani abu ne da ake amfani da shi wajen ƙara kauri a fenti mai amfani da ruwa. Babban aikinsu sun haɗa da:
Tasirin kauri: Cellulose ether na iya samar da tsarin hanyar sadarwa mai girman uku ta hanyar shan ruwa, ta haka yana ƙara danko na tsarin da kuma inganta aikin fenti na thixotropy da gininsa.
Tasirin daidaita dakatarwa: Cellulose ether na iya hana lalata ƙwayoyin daka masu ƙarfi kamar launuka da abubuwan cikawa a cikin fenti yadda ya kamata, sannan kuma ya kiyaye daidaiton fenti.
Siffar samar da fim: Cellulose ether na iya shafar sifar samar da fim na fenti, wanda hakan ke sa murfin ya sami tauri da dorewa.
Akwai nau'ikan ƙwayoyin cellulose da yawa, ciki har da methyl cellulose (MC), hydroxyethyl cellulose (HEC), hydroxypropyl methyl cellulose (HPMC), da sauransu. Waɗannan kayan suna da bambancin narkewa, ƙarfin kauri da juriya ga ajiya a cikin rufin.
2. Manyan dalilan rage danko
A lokacin adanawa, raguwar danko yana faruwa ne saboda dalilai masu zuwa:
(1) Lalacewar ƙwayoyin cellulose
Tasirin kauri na cellulose ethers a cikin rufin ya dogara ne akan girman nauyin kwayoyin halittarsu da kuma ingancin tsarin kwayoyin halittarsu. A lokacin ajiya, abubuwa kamar zafin jiki, acidity da alkalinity, da ƙananan halittu na iya haifar da lalacewar cellulose ethers. Misali, a lokacin ajiya na dogon lokaci, abubuwan acidic ko alkaline a cikin rufin na iya haifar da hydrolyze sarkar kwayoyin halittar cellulose ether, rage nauyin kwayoyin halittarsa, don haka ya raunana tasirin kauri, wanda ke haifar da raguwar danko.
(2) Sauyawar sinadaran da kuma ƙaura danshi
Rashin narkewar sinadarai ko kuma ƙaura danshi a cikin murfin na iya shafar yanayin narkewar cellulose ether. A lokacin ajiya, wani ɓangare na ruwan na iya ƙafewa ko ƙaura zuwa saman murfin, wanda hakan ke sa rarrabawar ruwa a cikin murfin ba ta daidaita ba, wanda hakan ke shafar matakin kumburin cellulose ether da kuma haifar da raguwar danko a yankunan da abin ya shafa.
(3) Harin ƙananan ƙwayoyin cuta
Girman ƙwayoyin cuta na iya faruwa a cikin murfin idan ba a adana shi yadda ya kamata ba ko kuma abubuwan kiyayewa sun zama marasa amfani. Ƙananan ƙwayoyin cuta na iya lalata cellulose ethers da sauran masu kauri na halitta, suna raunana tasirin kauri da kuma haifar da raguwar danko na murfin. Musamman ma shafa mai da ruwa ke yi, yanayi ne mai kyau don haɓakar ƙwayoyin cuta saboda suna ɗauke da ruwa mai yawa.
(4) Tsufa mai zafi sosai
A ƙarƙashin yanayin ajiya mai zafi, tsarin zahiri ko na sinadarai na sarkar ƙwayoyin cellulose ether na iya canzawa. Misali, ƙwayoyin cellulose suna da saurin kamuwa da iskar shaka ko pyrolysis a yanayin zafi mafi girma, wanda ke haifar da rauni na tasirin kauri. Yanayin zafi mai yawa kuma yana hanzarta rushewar sinadaran da ƙafewar ruwa, wanda ke ƙara shafar kwanciyar hankali na danko.
3. Hanyoyin inganta kwanciyar hankali na ajiya na rufin
Domin rage raguwar danko yayin ajiya da kuma tsawaita rayuwar ajiya na murfin, ana iya ɗaukar matakai masu zuwa:
(1) Zaɓar cellulose ether mai kyau
Nau'o'in cellulose ethers daban-daban suna da ayyuka daban-daban dangane da daidaiton ajiya. Cellulose ethers masu nauyin kwayoyin halitta mai yawa gabaɗaya suna da tasirin kauri mafi kyau, amma daidaiton ajiya ba shi da kyau, yayin da cellulose ethers masu ƙarancin nauyin kwayoyin halitta na iya samun ingantaccen aikin ajiya. Saboda haka, lokacin tsara dabarar, ya kamata a zaɓi cellulose ethers masu ingantaccen kwanciyar hankali na ajiya, ko kuma a haɗa cellulose ethers tare da wasu masu kauri don inganta juriyar ajiya.
(2) Kula da pH na murfin
Tsarin acidity da alkalinity na tsarin shafi yana da tasiri mai mahimmanci akan daidaiton cellulose ethers. A cikin tsarin tsari, ya kamata a sarrafa ƙimar pH na murfin don guje wa yanayin acidic ko alkaline mai yawa don rage lalacewar cellulose ethers. A lokaci guda, ƙara adadin pH mai daidaitawa ko ma'aunin kariya zai iya taimakawa wajen daidaita pH na tsarin.
(3) Ƙara amfani da abubuwan kiyayewa
Domin hana zaizayar ƙwayoyin cuta, ya kamata a ƙara adadin abubuwan kiyayewa da suka dace a cikin murfin. Abubuwan kiyayewa na iya hana haɓakar ƙwayoyin cuta, ta haka ne hana ruɓewar abubuwa masu rai kamar cellulose ether da kuma kiyaye daidaiton murfin. Ya kamata a zaɓi abubuwan kiyayewa da suka dace bisa ga tsarin rufin da yanayin ajiya, kuma a riƙa duba ingancinsu akai-akai.
(4) Kula da yanayin ajiya
Zafin ajiya da danshi na murfin suna da tasiri kai tsaye kan daidaiton danko. Ya kamata a adana murfin a cikin yanayi mai bushewa da sanyi, a guji yanayin zafi mai yawa da danshi mai yawa don rage saurin narkewar ruwa da kuma lalacewar cellulose ether. Bugu da ƙari, marufi mai kyau zai iya rage ƙaura da ƙafewar ruwa yadda ya kamata tare da jinkirta raguwar danko.
4. Wasu abubuwan da ke shafar danko
Baya ga cellulose ethers, sauran abubuwan da ke cikin tsarin shafa na iya shafar canjin danko. Misali, nau'in da yawan launuka, saurin narkewar sinadarai, da kuma dacewa da sauran masu kauri ko masu wargazawa na iya shafar dacewar danko na shafa. Saboda haka, tsarin hadadden tsarin shafa da kuma hulɗar da ke tsakanin abubuwan da ke ciki suma muhimman abubuwan ne da ya kamata a kula da su.
Rage danko yayin adana murfin yana da alaƙa da abubuwa kamar lalacewar cellulose ethers, rage yawan narkewar sinadarai, da kuma ƙaura da ruwa. Domin inganta daidaiton ajiya na murfin, ya kamata a zaɓi nau'ikan cellulose ether masu dacewa, a kula da pH na murfin, a ƙarfafa matakan hana tsatsa, kuma ya kamata a inganta yanayin ajiya. Ta hanyar ƙira mai ma'ana da kuma kyakkyawan tsarin ajiya, matsalar raguwar danko yayin adana murfin za a iya rage ta yadda ya kamata, kuma ana iya inganta aikin samfurin da kuma gasa a kasuwa.
Lokacin Saƙo: Satumba-27-2024