Sealant (Lus Askiv lub npe: sealant) tseem hu ua sealant; Sealing khoom. Nws yog cov khoom siv qib siab raws li cov matrix, uas yog deformed nrog cov duab ntawm lub sealing nto, tsis yooj yim rau ntws, thiab muaj ib co cohesiveness. Nws yog ib qho khoom siv uas tuaj yeem tiv thaiv kev cuam tshuam ntawm cov impurities sab nraud thiab cov xau ntawm cov khoom siv hauv cov khoom sib txuas zoo li qub ntawm ntau lub tshuab, thiab muaj cov khoom sib khi zoo. Nws tau muab faib ua ob pawg: sib koom ua ke thiab tsis muaj kev sib koom tes. Hom nplaum yog muab faib ua hom elastic, kub yaj hom thiab hom anaerobic; Hom tsis-nplaum yog muab faib ua hom qhuav fixation, qhuav tev hom, semi-dry viscoelastic type thiab non-dry adhesive type. Nws muaj lub luag haujlwm ntawm kev tiv thaiv dej, tiv thaiv kev vibration, suab rwb thaiv tsev, rwb thaiv tsev kub, thiab lwm yam. Nws feem ntau yog ua los ntawm cov khoom siv qhuav los yog tsis qhuav qhuav xws li asphalt, natural resin lossis hluavtaws cob, roj hmab lossis hluavtaws roj hmab. Raws li cov khoom siv hauv paus, nrog cov khoom siv tsis zoo xws li talc, av nplaum, carbon dub, titanium dioxide thiab asbestos, thiab tom qab ntawd ntxiv cov yas, cov kuab tshuaj, kho Cov neeg ua haujlwm, cov khoom siv accelerators, thiab lwm yam. Cov khoom siv pej xeem, xws li lub kaus mom sealant ntawm cov thawv ntim khoom siv, tsuas yog siv rau kev sib khi ntawm chav tsev kub (los yog kub siv siab) thiab siab, thiab lub sealing nto yog me me. Nws yog dav siv hauv kev sib khi ntawm cov tshuaj, tshuab, kev tsim kho, kev thauj mus los, cov cuab yeej hluav taws xob thiab qhov chaw. Kev siv cov xwm txheej yog qhov kub thiab txias, kev kub siab, kev sib cuag nrog ntau cov kuab tshuaj, cov kua qaub thiab alkalis thiab lwm yam corrosive media, qhov chaw sealing loj, lub neej ua haujlwm ntev, cov kev xav tau rau kev ua haujlwm ntawm sealants yog ntau dua, thiab muaj ntau yam thiab ntau yam ntawm sealants, uas tsis tuaj yeem sau ib qho los ntawm ib qho. Lub tshuab nqus tsev kub thiab lub siab kub siab yog feem ntau siv hauv cov nroj tsuag tshuaj.
