Chotsekera chimatanthauza chinthu chotsekera chomwe chimasinthasintha ndi mawonekedwe a pamwamba pa chotsekera, sichimathamanga mosavuta, ndipo chimakhala ndi guluu winawake.
Ndi guluu wogwiritsidwa ntchito kudzaza mipata yokonzera kuti itseke. Ili ndi ntchito zoletsa kutuluka kwa madzi, zosalowa madzi, zoletsa kugwedezeka, zoteteza mawu komanso zoteteza kutentha. Nthawi zambiri, zinthu zouma kapena zosauma monga phula, utomoni wachilengedwe kapena utomoni wopangidwa, mphira wachilengedwe kapena mphira wopangidwa zimagwiritsidwa ntchito ngati maziko, ndipo zodzaza zopanda mphamvu monga talc, dongo, carbon black, titanium dioxide ndi asbestos zimawonjezedwa. Mapulasitiki, zosungunulira, zochiritsa, zothamangitsa, ndi zina zotero. Zingagawidwe m'magulu atatu: elastic sealant, liquid sealing gasket ndi sealing putty. Zimagwiritsidwa ntchito kwambiri potseka zomangamanga, mayendedwe, zida zamagetsi ndi zida zina.
Pali mitundu yambiri ya zotsekera: Zotsekera za silicone, zotsekera za polyurethane, zotsekera za polysulfide, zotsekera za acrylic, zotsekera za anaerobic, zotsekera za epoxy, zotsekera za butyl, zotsekera za neoprene, zotsekera za PVC, ndi zotsekera za asphalt.
Katundu wamkulu wa sealant
(1) Mawonekedwe: Mawonekedwe a sealant amatsimikiziridwa makamaka ndi kufalikira kwa chodzaza pansi. Chodzazacho ndi ufa wolimba. Pambuyo pomwazidwa ndi kneader, grinder ndi makina a planetary, chimatha kufalikira mofanana mu rabara yoyambira kuti chipange phala losalala. Kuchuluka pang'ono kwa tinthu tating'onoting'ono kapena mchenga ndikovomerezeka komanso kwabwinobwino. Ngati chodzazacho sichinamwazike bwino, tinthu tambiri tolimba kwambiri timaonekera. Kuphatikiza pa kufalikira kwa zodzaza, zinthu zina zimakhudzanso mawonekedwe a chinthucho, monga kusakaniza kwa tinthu tating'onoting'ono, kutumphuka, ndi zina zotero. Milandu iyi imaonedwa ngati yolimba.
(2) Kuuma
(3) Mphamvu yokoka
(4) Kutalikitsa
(5) Kusinthasintha kwa mphamvu ndi kusamuka
(6) Kumamatira ku substrate
(7) Kutulutsa: Uku ndi momwe ntchito yomanga sealant imagwirira ntchito. Chinthu chomwe chimagwiritsidwa ntchito kusonyeza kuvutika kwa sealant chikagwiritsidwa ntchito. Guluu wokhuthala kwambiri udzakhala ndi vuto lotulutsa, ndipo zidzakhala zovuta kwambiri kumamatira akagwiritsidwa ntchito. Komabe, ngati guluuyo wapangidwa kukhala woonda kwambiri poganizira momwe extrudation imatulutsira, zidzakhudza thixotropy ya sealant. Kutulutsako kumatha kuyezedwa ndi njira yomwe yatchulidwa mu muyezo wadziko lonse.
(8) Thixotropy: Ichi ndi chinthu china chomwe chimagwira ntchito pomanga sealant. Thixotropy ndi yosiyana ndi kusinthasintha kwa madzi, zomwe zikutanthauza kuti sealant imatha kusintha mawonekedwe ake pokhapokha ngati pali mphamvu inayake, ndipo imatha kusunga mawonekedwe ake popanda kuyenda. Kutsimikiza kwa kusamuka komwe kwatchulidwa ndi muyezo wadziko lonse ndiko kuweruza kwa thixotropy ya sealant.
Nthawi yotumizira: Novembala-04-2022