Lamarin faɗuwar danko yayin ajiyar fenti matsala ce ta gama gari, musamman bayan adana dogon lokaci, ƙarancin fenti yana raguwa sosai, yana shafar aikin gini da ingancin samfur. Rage danko yana da alaƙa da abubuwa da yawa, kamar zafin jiki, zafi, ƙarancin ƙarfi, lalata polymer, da sauransu, amma hulɗa tare da ether mai kauri yana da mahimmanci musamman.
1. Matsayi na asali na ether cellulose
Cellulose ether wani kauri ne na yau da kullun da ake amfani dashi a cikin fenti na tushen ruwa. Babban ayyukansu sun haɗa da:
Tasiri mai kauri: Cellulose ether na iya samar da tsarin cibiyar sadarwa mai girma uku mai kumbura ta hanyar shayar da ruwa, ta haka yana kara dankon tsarin da inganta thixotropy da aikin ginin fenti.
Tasirin ƙarfafawa na dakatarwa: Cellulose ether na iya yin tasiri yadda ya kamata ya hana ɓarna na tsayayyen barbashi kamar su pigments da filler a cikin fenti da kiyaye daidaiton fenti.
Abubuwan da ke samar da fina-finai: Cellulose ether kuma na iya shafar kayan aikin fim na fenti, yin suturar ta sami wani ƙarfi da karko.
Akwai da yawa iri cellulose ethers, ciki har da methyl cellulose (MC), hydroxyethyl cellulose (HEC), hydroxypropyl methyl cellulose (HPMC), da dai sauransu Wadannan kayan da daban-daban solubility, thickening ikon da ajiya juriya a coatings.
2. Babban dalilai na rage danko
A lokacin ajiya na sutura, raguwar danko yana faruwa ne ta hanyar dalilai masu zuwa:
(1) Lalacewar ethers cellulose
Tasirin kauri na ethers cellulose a cikin sutura ya dogara da girman nauyin kwayoyin su da amincin tsarin kwayoyin su. A lokacin ajiya, abubuwa kamar zafin jiki, acidity da alkalinity, da microorganisms na iya haifar da lalacewar ethers cellulose. Alal misali, a lokacin ajiya na dogon lokaci, abubuwan acidic ko alkaline a cikin rufi na iya yin amfani da sarkar kwayoyin halitta na cellulose ether, rage nauyin kwayoyin halitta, kuma ta haka ya raunana tasirinsa na kauri, yana haifar da raguwa a cikin danko.
(2) Warren juyewa da ƙaura da danshi
Ƙunƙarar ƙarfi ko ƙaura mai danshi a cikin rufi na iya shafar yanayin solubility na ether cellulose. A lokacin ajiya, wani ɓangare na ruwa na iya ƙaura ko ƙaura zuwa saman rufin, yin rarraba ruwa a cikin rufin da ba daidai ba, ta haka yana rinjayar girman ƙwayar cellulose ether kuma yana haifar da raguwa a cikin danko a cikin yankunan gida.
(3) Harin Microbial
Ci gaban ƙananan ƙwayoyin cuta na iya faruwa a cikin sutura lokacin da aka adana shi ba daidai ba ko kuma abubuwan da aka kiyaye su ba su da tasiri. Ƙananan ƙwayoyin cuta na iya lalata ethers cellulose da sauran masu kauri na kwayoyin halitta, suna raunana tasirin su da kuma haifar da danko na rufi don ragewa. Abubuwan da ake amfani da su na ruwa, musamman, yanayi ne mai kyau don ci gaban ƙananan ƙwayoyin cuta saboda suna dauke da ruwa mai yawa.
(4) Yawan tsufa na zafin jiki
Ƙarƙashin yanayin ajiyar zafin jiki mai girma, tsarin jiki ko sinadarai na sarkar ether cellulose na iya canzawa. Alal misali, ethers cellulose suna da haɗari ga oxidation ko pyrolysis a yanayin zafi mafi girma, yana haifar da rauni na sakamako mai girma. Babban yanayin zafi kuma yana hanzarta juyewar ƙarfi da ƙafewar ruwa, yana ƙara shafar kwanciyar hankali.
3. Hanyoyi don inganta kwanciyar hankali na ajiya na sutura
Don rage raguwa a cikin danko yayin ajiya da kuma tsawaita rayuwar ajiyar kayan shafa, ana iya ɗaukar matakan masu zuwa:
(1) Zaɓin ether cellulose daidai
Daban-daban na ethers cellulose suna da ayyuka daban-daban dangane da kwanciyar hankali na ajiya. Cellulose ethers tare da babban nauyin kwayoyin halitta gabaɗaya suna da mafi kyawun sakamako mai kauri, amma kwanciyar hankalin ajiyar su ba shi da kyau, yayin da ethers cellulose tare da ƙananan nauyin ƙwayoyin cuta na iya samun ingantaccen aikin ajiya. Sabili da haka, lokacin zayyana dabarar, ya kamata a zaɓi ethers cellulose tare da kwanciyar hankali mai kyau, ko kuma a haɗa ethers cellulose tare da wasu masu kauri don haɓaka juriya na ajiya.
(2) Sarrafa pH na sutura
Acidity da alkalinity na tsarin sutura suna da tasiri mai mahimmanci akan kwanciyar hankali na ethers cellulose. A cikin ƙirar ƙira, ƙimar pH na rufi ya kamata a sarrafa shi don guje wa ƙarancin acidic ko yanayin alkaline don rage lalata ethers cellulose. A lokaci guda, ƙara yawan adadin pH mai daidaitawa ko buffer zai iya taimakawa wajen daidaita pH na tsarin.
(3) Kara yawan amfani da abubuwan kiyayewa
Don hana yashwar ƙananan ƙwayoyin cuta, ya kamata a ƙara adadin abubuwan da suka dace na masu kiyayewa a cikin sutura. Masu kiyayewa na iya hana haɓakar ƙwayoyin cuta, ta haka ne ke hana abubuwan da ke tattare da kwayoyin halitta irin su cellulose ether daga lalacewa da kuma kiyaye kwanciyar hankali na sutura. Ya kamata a zaɓi abubuwan da suka dace bisa ga tsarin sutura da yanayin ajiya, kuma yakamata a bincika tasirin su akai-akai.
(4) Sarrafa wurin ajiya
Yanayin ajiya da zafi na sutura suna da tasiri kai tsaye akan kwanciyar hankali. Ya kamata a adana murfin a cikin bushe da sanyi yanayi, guje wa yanayin zafi mai zafi da yanayin zafi mai zafi don rage ƙarancin ƙarfi da lalata ether cellulose. Bugu da ƙari, marufi da aka rufe da kyau zai iya rage ƙaura da ƙaura daga ruwa da jinkirta raguwa a cikin danko.
4. Sauran abubuwan da suka shafi danko
Baya ga ethers cellulose, sauran abubuwan da ke cikin tsarin sutura na iya shafar canjin danko. Misali, nau'in da maida hankali na pigments, ƙimar juzu'i na kaushi, da daidaituwar sauran masu kauri ko masu watsawa na iya shafar kwanciyar hankali na rufin. Sabili da haka, gabaɗayan ƙirar ƙirar sutura da hulɗar da ke tsakanin abubuwan da aka haɗa su ma mahimman abubuwan da ke buƙatar kulawa.
Ragewar danko yayin ajiyar kayan shafa yana da alaƙa da alaƙa da abubuwan da suka shafi lalata ethers cellulose, ƙarancin ƙarfi, da ƙaura na ruwa. Don inganta kwanciyar hankali na rufin, ya kamata a zaɓi nau'in ether cellulose masu dacewa, ya kamata a sarrafa pH na rufin, ya kamata a karfafa matakan kariya, kuma ya kamata a inganta yanayin ajiya. Ta hanyar ƙirar ƙira mai ma'ana da kulawar ajiya mai kyau, matsalar raguwar danko yayin ajiyar suturar za a iya rage ta yadda ya kamata, kuma ana iya inganta aikin samfurin da ƙwarewar kasuwa.
Lokacin aikawa: Satumba-27-2024