Foda na putty wani nau'in kayan ado ne na gini, manyan abubuwan da aka haɗa su ne foda na talcum da manne. Farin Layer a saman ɗakin da ba komai da aka saya shine putty. Yawanci farin putty yana sama da 90° kuma ɗanɗanon yana sama da 330°.
Putty wani nau'in kayan tushe ne da ake amfani da shi don gyaran bango, wanda ke shimfida tushe mai kyau don mataki na gaba na ado (zane da fuskar bangon waya). Putty ya kasu kashi biyu: putty a ciki bango da putty a bango na waje. Putty na waje na iya jure iska da rana, don haka yana da kyakkyawan gelation, ƙarfi mai yawa da ƙarancin muhalli. Cikakken ma'aunin putty a cikin bango na ciki yana da kyau, kuma yana da tsafta kuma yana da kyau ga muhalli. Saboda haka, bangon ciki ba don amfani na waje bane kuma bangon waje ba don amfani na ciki bane. Putty yawanci ana yin sa ne akan gypsum ko siminti, don haka saman da ke da tauri suna da sauƙin haɗawa da ƙarfi. Duk da haka, yayin gini, har yanzu yana da mahimmanci a goge wani Layer na wakili mai haɗawa a kan tushe don rufe tushe da inganta mannewar bango, don haka putty zai iya zama mafi dacewa da tushe.
Mutane da yawa masu amfani da foda na putty dole ne su yarda cewa cire foda na putty matsala ce mai matuƙar tsanani. Zai sa fenti na latex ya faɗi, da kuma kumburi da tsagewar layin putty, wanda zai haifar da tsagewa a ƙarshen fenti na latex.
A halin yanzu, cire foda da kuma yin fari a cikin foda na putty sune matsalolin da suka fi yawa bayan an gina putty. Domin fahimtar dalilan cire foda na putty, dole ne mu fara fahimtar abubuwan da aka gyara da kuma ƙa'idodin warkar da foda na putty, sannan mu haɗa saman bango yayin gina putty. Busasshen ruwa, sha ruwa, zafin jiki, bushewar yanayi, da sauransu.
Manyan dalilai guda 8 da ke sa foda na putty ya faɗi.
dalili na ɗaya
Ƙarfin haɗin putty bai isa ya sa a cire foda ba, kuma masana'anta sun rage farashi a hankali. Ƙarfin haɗin foda na roba ba shi da kyau, kuma adadin ƙarin yana da ƙanƙanta, musamman ga putty na ciki na bango. Kuma ingancin manne yana da alaƙa da adadin da aka ƙara.
Dalili na biyu
Tsarin ƙira mara kyau, zaɓin abu da matsalolin tsari suna da matuƙar muhimmanci a cikin tsarin putty. Misali, ana amfani da hydroxypropyl methylcellulose (HPMC) azaman putty mara ruwa don bangon ciki. Duk da cewa HPMC yana da tsada sosai, ba ya aiki ga abubuwan cikawa kamar foda mai tashi biyu, foda na talcum, foda na wollastonite, da sauransu. Idan aka yi amfani da HPMC kawai, zai haifar da lalata. Duk da haka, CMC da CMS masu ƙarancin farashi ba sa cire foda, amma ba za a iya amfani da CMC da CMS azaman putty mai hana ruwa shiga ba, kuma ba za a iya amfani da su azaman putty na bango na waje ba, saboda CMC da CMS suna amsawa da foda na alli mai launin toka da siminti mai farin siminti, wanda zai haifar da lalata. Akwai kuma polyacrylamides da aka ƙara a cikin foda na alli da siminti mai farin siminti a matsayin rufin hana ruwa shiga, wanda kuma zai haifar da halayen sinadarai don haifar da cire foda.
Dalili na Uku
Haɗawa mara daidaito shine babban dalilin cire foda na putty a bangon ciki da na waje. Wasu masana'antun ƙasar suna samar da foda na putty tare da kayan aiki masu sauƙi da bambance-bambance. Ba kayan haɗin musamman ba ne, kuma haɗawa mara daidaito yana haifar da cire foda na putty.
Dalili na huɗu
Kuskuren da ke cikin tsarin samarwa yana sa putty ya zama foda. Idan mahaɗin ba shi da aikin tsaftacewa kuma akwai ƙarin ragowar, CMC a cikin putty na yau da kullun zai yi aiki tare da foda na ash calcium a cikin putty mai hana ruwa. CMC da CMS a cikin putty na bango na ciki da bangon waje. Simintin farin putty yana amsawa don haifar da cire foda. Kayan aikin wasu kamfanoni na musamman suna da tashar tsaftacewa, wanda zai iya tsaftace ragowar da ke cikin injin, ba wai kawai don tabbatar da ingancin putty ba, har ma don amfani da injin ɗaya don dalilai da yawa, da siyan kayan aiki ɗaya don samar da nau'ikan putty.
Dalili na Biyar
Bambancin ingancin abubuwan cikawa shi ma yana iya haifar da cire foda. Ana amfani da adadi mai yawa na abubuwan cikawa a cikin putty na ciki da na waje na bango, amma abun da ke cikin Ca2CO3 a cikin babban foda na calcium da foda na talc a wurare daban-daban ya bambanta, kuma bambancin pH zai kuma haifar da cire foda na putty, kamar waɗanda ke cikin Chongqing da Chengdu. Ana amfani da foda na roba iri ɗaya don foda na ciki na putty, amma foda na talcum da foda na calcium mai nauyi sun bambanta. A Chongqing, ba ya cire foda, amma a Chengdu, ba ya cire foda.
dalili na shida
Dalilin yanayi shi ma dalili ne na cire foda na putty a bangon ciki da na waje. Misali, putty da ke kan bangon ciki da na waje yana da yanayi busasshe da kuma iska mai kyau a wasu yankuna busasshe a arewa. Akwai yanayi na ruwan sama, danshi na dogon lokaci, yanayin samar da fim na putty ba shi da kyau, kuma zai rasa foda, don haka wasu wurare sun dace da putty mai hana ruwa shiga tare da foda na calcium.
dalili na bakwai
Abubuwan ɗaurewa marasa tsari kamar su foda mai launin toka da siminti fari ba su da tsarki kuma suna ɗauke da adadi mai yawa na foda mai ƙura biyu. Abin da ake kira foda mai launin toka mai aiki da yawa da siminti mai aiki da yawa a kasuwa ba su da tsarki, saboda ana amfani da adadi mai yawa na waɗannan abubuwan ɗaurewa marasa tsari, kuma putty mai hana ruwa na bangon ciki da na waje tabbas ba zai yi ƙura ba kuma ba zai hana ruwa ba.
dalili na takwas
A lokacin rani, riƙe ruwa na putty a bangon waje bai isa ba, musamman a wurare masu zafi da iska mai ƙarfi kamar ƙofofi masu tsayi da tagogi. Idan lokacin farawa na toka foda da siminti bai isa ba, zai rasa ruwa, kuma idan ba a kula da shi da kyau ba, shi ma zai yi matuƙar amfani da foda.
Lokacin Saƙo: Yuni-02-2023