Babban abubuwan da ke haifar da launin rawaya na farfajiyar ruwa mai tsaurin ruwa Bayan binciken kayan aiki, yawancin gwaje-gwajen gwaje-gwaje da aikin injiniya, marubucin ya yi imanin cewa manyan abubuwan da ke haifar da launin rawaya na farfajiyar ruwa mai tsayayya da ruwa sune kamar haka. :
Dalili 1. Calcium hydroxide (ash calcium foda) baya zuwa alkali yana haifar da yellowing Calcium hydroxide, tsarin kwayoyin halitta Ca (OH) 2, dangi nauyin kwayoyin halitta 74, ma'anar narkewa 5220, darajar pH ≥ 12, alkaline mai karfi, farin foda mai laushi, dan kadan Soluble a ciki ruwa, mai narkewa a cikin acid, glycerin, sukari, ammonium chloride, mai narkewa a cikin acid don saki da yawa. na zafi, dangi yawa ne 2.24, bayyanannun ruwa bayani ne mara launi, wari alkaline m ruwa, a hankali sha, calcium oxide zama calcium carbonate. Calcium hydroxide yana da matsakaicin ƙarfi alkaline, alkalinity da lalata sun fi sodium hydroxide rauni, calcium hydroxide da maganin ruwan sa suna lalata fata, sutura, da sauransu, amma ba mai guba ba, kuma bai kamata ya kasance cikin hulɗa da fata kai tsaye ba. kwana biyu.
Calcium hydroxide shine mai aiki mai aiki a cikin putty mai jure ruwa don samar da fim mai ƙarfi tare da nauyin calcium carbonate da babban foda mai sheki. Saboda ƙaƙƙarfan alkalinity da babban abun ciki na alkali, wani ɓangare na ruwa a cikin putty za a shafe shi ta bangon bango yayin ginin. Haka karfi alkaline ciminti kasa turmi, ko yashi-lemun tsami kasa (lemun tsami, yashi, karamin adadin siminti) ake tunawa, kamar yadda putty Layer da hankali bushewa da ruwa volatilizes, da alkaline abubuwa a cikin grassroots turmi da putty da wasu daga. Ba su da kwanciyar hankali bayan hydrolysis Abubuwan da ke cikin putty (kamar ƙarfe na ƙarfe, ƙarfe na ƙarfe, da sauransu) za su fito ta cikin ƙananan pores na putty, kuma wani sinadari zai faru bayan saduwa da iska, wanda zai haifar da saman putty zuwa rawaya.
Dalili na 2. Gas ɗin sinadarai marasa ƙarfi. Irin su carbon monoxide (CO), sulfur dioxide (SO2), benzene, toluene, xylene, formaldehyde, pyrotechnics, da dai sauransu. A wasu lokuta na injiniya, an sami yanayi inda saman sa ya zama rawaya saboda amfani da fenti da kuma wuta don dumama a cikin dakin da aka goge kayan da ba shi da ruwa, ko ma turaren wuta a cikin dakin, kuma mutane da yawa suna shan taba a lokaci guda.
Dalili 3. Tasirin yanayi da abubuwan muhalli. A cikin yankin arewa, a lokacin lokacin musayar yanayi, saman putty yakan juya launin rawaya daga Nuwamba zuwa Mayu na shekara mai zuwa, amma wannan lamari ne kawai.
Dalili 4. Yanayin samun iska da bushewa ba su da kyau. Katangar ta jike. Bayan an goge abin da ke jure ruwa, idan mashin ɗin bai bushe gaba ɗaya ba, rufe ƙofofi da tagogi na dogon lokaci zai sa saman putty ɗin ya zama rawaya.
Dalili 5. Matsalolin tushen tushe. Ƙasar tsohuwar bangon gabaɗaya bangon yashi ne mai launin toka (lemun tsami, yashi, ɗan ƙaramin siminti, wasu kuma gauraye da gypsum). Ubangiji, amma har yanzu akwai wurare da yawa inda ganuwar da aka plastered da lemun tsami da plaster. Yawancin kayan bango sune alkaline. Bayan putty ya taɓa bango, wasu ruwa za su sha bango. Bayan hydrolysis da oxidation, wasu abubuwa, irin su alkali da baƙin ƙarfe, za su fito ta cikin ƙananan ramukan bango. Halin sinadarai yana faruwa, yana haifar da saman putty zuwa rawaya.
Dalili 6. Wasu dalilai. Baya ga abubuwan da za su yiwu a sama, za a sami wasu dalilai, waɗanda ke buƙatar ƙarin bincike.
Magani don hana putty mai jure ruwa komawa zuwa rawaya:
Hanyar 1. Yi amfani da wakili na baya don rufewa.
Hanyar 2. Don tsofaffin kayan ado na bango, ƙananan kayan kwalliya na yau da kullum wanda ba shi da ruwa kuma mai sauƙi don jurewa an goge shi a baya. Kafin yin amfani da putty mai jure ruwa mai girma, yakamata a fara yin jiyya na fasaha. Hanyar ita ce: da farko a fesa ruwa don jika bangon bangon, sannan a yi amfani da spatula don goge shi Cire duk wani tsoho da fenti (har zuwa ƙasa mai wuya) sannan a tsaftace shi. Bayan bangon ya bushe gaba ɗaya, sake tsaftace shi kuma a yi amfani da wakili mai goyan baya don rufe maganin goyan baya, sannan a goge abin da ba shi da ruwa. rawaya.
Hanya na 3. Kauce wa iskar gas da wuta mai jujjuyawa. A lokacin da ake aikin, musamman ma lokacin da abin ya shafa bai bushe ba bayan an gama gina shi, kar a sha hayaki ko kunna wuta a cikin gida don dumama, sannan kuma kada a yi amfani da sinadarai masu lalacewa irin su fenti da na'urorin sa a cikin gida cikin watanni uku.
Hanyar 4. Ka ajiye wurin da iska da bushewa. Kafin putty mai jure ruwa ya bushe gaba ɗaya, kar a rufe ƙofofi da tagogi sosai, amma buɗe tagogin don samun iska, ta yadda Layer ɗin ya bushe da wuri.
Hanyar 5. Ana iya ƙara adadin da ya dace na 462 modified ultramarine zuwa putty mai jure ruwa. Takamaiman hanya: Dangane da rabo na 462 modified ultramarine: putty powder = 0.1: 1000, da farko ƙara ultramarine cikin wani adadin ruwa, motsawa don narkewa da tace, ƙara maganin ruwa na ultramarine da ruwa a cikin akwati, sannan danna maɓallin. jimlar ruwa: putty foda = 0.5: 1 rabo rabo, sanya putty foda a cikin akwati, motsa shi a ko'ina tare da mahautsini don samar da kirim mai tsami. madara, sannan a yi amfani da shi. Gwajin ya nuna cewa ƙara wani nau'i na ultramarine blue zai iya hana saman putty daga juyawa zuwa rawaya zuwa wani matsayi.
Hanyar 6. Don putty wanda ya juya rawaya, ana buƙatar magani na fasaha. Hanyar magani ta gaba ɗaya ita ce: da farko a yi amfani da firam ɗin a saman abin da ake sakawa, sannan a goge a shafa fenti mai jure ruwa mai inganci ko goga na bangon latex na ciki.
Takaita abubuwan da ke sama:
Yin launin rawaya na saman ruwa mai jure ruwa da fenti na kwaikwayo na kwaikwayo ya ƙunshi abubuwa da yawa kamar albarkatun ƙasa, yanayin muhalli, yanayin yanayi, bangon bango, fasahar gini, da dai sauransu. Matsala ce mai rikitarwa, kuma ana buƙatar ƙarin bincike da tattaunawa.
Lokacin aikawa: Afrilu-28-2024