Gel silica wani nau'in kayan talla ne mai aiki sosai.
Abu ne mai amorphous kuma tsarin sinadaransa shine mSiO2.nH2O. Ya dace da daidaitattun sinadarai na kasar Sin HG/T2765-2005. Danyan kayan bushewa ne wanda FDA ta amince da shi wanda zai iya yin hulɗa kai tsaye da abinci da magunguna. Gel na silica yana da ƙarfin hygroscopic mai ƙarfi, ƙarfin talla mai ƙarfi, koda kuwa silica gel desiccant ya nutsar da shi cikin ruwa, ba zai yi laushi ba ko ruwa. Yana da halaye na ba mai guba, maras ɗanɗano, mara lahani da ƙazanta, don haka yana iya kasancewa cikin hulɗa kai tsaye tare da kowane abu. Kayan albarkatun da ake buƙatar shirya don samar da silica gel sune: sodium silicate (paucine, gilashin ruwa), sulfuric acid.
Da farko, ana shirya alkali da acid a gaba, sannan a narkar da daskararrun sodium silicate a zafin jiki mai yawa sannan a tace a shirya wani taro na ruwa, sannan a shirya sinadarin sulfuric zuwa wani ruwa mai yawa, yawan sinadarin sulfuric. acid shine 20%.
Na biyu, mataki na biyu shi ne yin manne (gel granulation), wannan mataki shi ne mafi mahimmanci, da pre-modulated kumfa lye da sulfuric acid bayani a karkashin takamaiman yanayi, don samar da wani soluble gel bayani, bayan kai da ya dace taro zai. zama gel barbashi. Za a iya ƙayyade siffar da girman ɓangarorin gaba ɗaya bisa ga buƙatun mai amfani da ƙarfin samarwa. Hanyar gama gari na gel granulation ita ce granulation iska, da acid-base rabo, maida hankali, zazzabi da gel granulation lokaci amfani a cikin gel granulation tsari ne takamaiman fasaha sigogi.
Na uku, gel tsufa yana buƙatar wucewa ta wani adadin lokaci da zafin jiki, kazalika da ƙimar PH zuwa shekaru, yin skeleton gel mai ƙarfi, mannewar manne tsakanin ƙwayoyin cuta yayin tsarin tsufa don samar da haɗin Si-O-Si, haɓaka haɓaka. Ƙarfin kwarangwal, ƙwayoyin suna kusa da juna, suna rage sararin samaniya a cikin tsarin grid, kuma ruwan da ke cikin shi yana fitar da shi.
Taba, wanke-wanke, wanke-wanke, Ɗauka, wanke-wanke, wanke-wanke ma wani mataki ne mai matuƙar mahimmanci a cikin aikin, domin Na2SO4 da aka samar da granular gel ana wanke shi. Sarrafa kowane anion a cikin kewayon da ake buƙata ta tsari. Ana iya cewa babban ɓangare na pore halaye na ƙãre silica gel ne m ta hanyar tsufa na roba wanke tsari, da kuma tsufa mataki na wannan tsari dogara a kan aiki a pickling, wanka, da kuma roba wanke tsari.
Na biyar, bushewa, hydrogel da aka shirya (bayan wankewa) a cikin ɗakin bushewa, a cikin takamaiman yanayi don rage yawan ruwa na gel kanta yana bushewa zuwa kewayon da ake bukata. Mafi girma da bushewa zafin jiki, da mafi girma da kudi na farko barbashi aggregation da ya fi girma da budewa.
Shida, nunawa, za a bushe na'urar zaɓin ƙwallon ƙwallon bayan silicone ta fuskar bangon buɗe ido daban-daban daidai da ƙayyadaddun girman girman allo, kuma a lokaci guda za a karye silica gel ɗin nunawa.
Bakwai, ɗaukar manne: gel ɗin silica a cikin ƙwallon heterochromatic, ƙazanta suna cirewa sannan amfani da takarda mai haɗawa bisa ga buƙatun marufi, bayan rufewa. Bayan matakan da ke sama, ana samar da samfurin silicone.
Lokacin aikawa: Nuwamba-14-2023
