Sealant inoreva chinhu chekuisa chisimbiso chinokanganiswa nechimiro chenzvimbo yekuvharisa, isiri nyore kuyerera, uye ine kumwe kunamatira.
Icho chinonamira chinoshandiswa kuzadza misimboti yekuisa chisimbiso. Iine mabasa ekudzivirira-kudonha, kusapinda kwemvura, anti-vibration, kuvharidzira inzwi uye kupisa kupisa. Kazhinji, yakaoma kana isina-yakaomeswa viscous zvinhu zvakaita seasphalt, resin yechisikigo kana synthetic resin, rabha yechisikigo kana synthetic rabha inoshandiswa seyakadzika zvinhu, uye inert mafirita senge talc, ivhu, kabhoni dema, titanium dioxide uye asbestos inowedzerwa. Plasticizers, solvents, cureing agents, accelerators, etc. Inogona kupatsanurwa muzvikamu zvitatu: elastic sealant, liquid sealing gasket uye sealing putty. Inoshandiswa zvakanyanya mukuisa chisimbiso chekuvaka, chekufambisa, zvemagetsi zviridzwa uye zvikamu.
Kune marudzi akawanda ezvisimbiso: Silicone sealants, polyurethane sealants, polysulfide sealants, acrylic sealants, anaerobic sealants, epoxy sealants, butyl sealants, neoprene sealants, PVC sealants, uye asphalt sealants.
Izvo zvakakosha zve sealant
(1) Kuonekwa: Kuonekwa kwechisimbiso kunonyanya kugadziriswa nekupararira kwekuzadza mujinga. Iyo yekuzadza ipfu yakasimba. Mushure mekuparadzirwa nekneader, grinder uye muchina wepuraneti, inogona kuparadzirwa zvakaenzana mubhesi rabha kuti iite paste yakanaka. Chidimbu chiduku chefaindi shoma kana jecha inogamuchirwa uye yakajairika. Kana iyo yekuzadza isina kunyatsoparadzirwa, akawanda akakasharara zvimedu anozoonekwa. Pamusoro pekupararira kwekuzadza, zvimwe zvinhu zvichakanganisawo kutaridzika kwechigadzirwa, sekusanganiswa kwehutsvina hwemukati, crusting, nezvimwe. Izvi zviitiko zvinoonekwa seyakaomarara pakuonekwa.
(2) Kuoma
(3) Kusimba kwesimba
(4) Kurebesa
(5) Tensile modulus uye kugona kusimuka
(6) Kunamatira kune substrate
(7) Extrusion: Uku ndiko kuita kwekuvaka sealant Chinhu chinoshandiswa kuratidza kuoma kwechisimbiso kana chichishandiswa. Guruu rakakora kwazvo rinenge risisina kusimba, uye zvichave zvakaoma kunama kana yashandiswa. Nekudaro, kana glue rikave rakatetepa zvakanyanya nekungofunga nezve extrudability, zvinokanganisa iyo thixotropy yechisimbiso. Iyo extrudability inogona kuyerwa nenzira yakatsanangurwa muyero yenyika.
(8) Thixotropy: Ichi ndicho chimwe chinhu chekuita kwekuvaka kwechisimbiso. Thixotropy inopesana ne fluidity, izvo zvinoreva kuti chisimbiso chinogona kungoshandura chimiro chayo pasi peimwe dzvinyiriro, uye inogona kuchengetedza chimiro chayo kana pasina simba rekunze. chimiro chisina kuyerera. Kutemerwa kweiyo sag inotsanangurwa nechiyero chenyika ndiyo mutongo wethixotropy wechisimbiso.
Nguva yekutumira: Nov-04-2022