Sealant yana nufin kayan rufewa wanda ke canzawa da siffar saman rufewa, ba shi da sauƙin gudana, kuma yana da ɗan mannewa.
Manne ne da ake amfani da shi don cike gibin tsari don rufewa. Yana da ayyukan hana zubewa, hana ruwa, hana girgiza, hana sauti da kuma hana zafi. Yawanci, ana amfani da kayan ƙamshi busasshe ko marasa busasshe kamar kwalta, resin na halitta ko resin roba, roba na halitta ko robar roba a matsayin kayan tushe, kuma ana ƙara abubuwan cikawa marasa aiki kamar talc, yumbu, carbon black, titanium dioxide da asbestos. Ana iya raba shi zuwa rukuni uku: mai rufe roba, gasket ɗin rufe ruwa da putty mai rufewa. Ana amfani da shi sosai wajen rufe gini, sufuri, kayan aikin lantarki da sassa.
Akwai nau'ikan manne-manne iri-iri: manne-manne na silicone, manne-manne na polyurethane, manne-manne na polysulfide, manne-manne na acrylic, manne-manne na anaerobic, manne-manne na epoxy, manne-manne na butyl, manne-manne na neoprene, manne-manne na PVC, da manne-manne na asfalt.
Babban kaddarorin sealant
(1) Bayyana: Bayyanar mannewar galibi tana da alaƙa da watsawar mannewar a cikin tushe. Mai cikewa foda ne mai ƙarfi. Bayan an watsa shi ta hanyar mannewa, niƙa da injin duniyoyi, ana iya watsa shi daidai gwargwado a cikin robar tushe don samar da manna mai laushi. Ƙaramin ɗan ƙaramin yashi ko yashi abin karɓa ne kuma al'ada ce. Idan mannewar ba ta warwatse sosai ba, ƙwayoyin cuta da yawa masu kauri za su bayyana. Baya ga watsawar mannewar, wasu abubuwa kuma za su shafi bayyanar samfurin, kamar haɗa ƙazanta na barbashi, ɓawon burodi, da sauransu. Waɗannan lamuran ana ɗaukar su a matsayin marasa kyau a cikin bayyanar.
(2) Taurin kai
(3) Ƙarfin juriya
(4) Tsawaita
(5) Tsarin tensile da ikon motsa jiki
(6) Mannewa ga abin da aka yi da ƙasa
(7) Fitar da ruwa: Wannan shine aikin ginin mai rufewa. Abu ne da ake amfani da shi don nuna wahalar mai rufewa lokacin da ake amfani da shi. Manne mai kauri zai yi rashin ƙarfi wajen fitar da ruwa, kuma zai yi wahala a manne shi lokacin da ake amfani da shi. Duk da haka, idan manne ya yi siriri sosai idan aka yi la'akari da fitar da ruwa, zai shafi thixotropy na mai rufewa. Ana iya auna fitar da ruwa ta hanyar da aka ƙayyade a cikin ƙa'idar ƙasa.
(8) Thixotropy: Wannan wani abu ne na aikin ginin mai rufewa. Thixotropy akasin ruwa ne, wanda ke nufin cewa mai rufewa zai iya canza siffarsa ne kawai a ƙarƙashin wani matsin lamba, kuma zai iya kiyaye siffarsa lokacin da babu wani ƙarfi na waje ba tare da gudana ba. Ƙayyade sag ɗin da aka ƙayyade ta ma'aunin ƙasa shine hukuncin thixotropy na mai rufewa.
Lokacin Saƙo: Nuwamba-04-2022