One-component polyurethane sealant, raws li txoj cai, yog siv thaum ib yam dab tsi xav tau los khi, kua nplaum, foob hlau, ceramics, cib, pob zeb, thiab lwm yam. Qhov sib tov yog cov khoom siv zoo nrog cov qib siab ntawm kev tiv thaiv corrosion, thiab ua kom ruaj khov dua thaum raug cov dej noo. Feem ntau siv sealant rau lub tsev ntoo.
Tom qab siv cov khoom siv rau saum npoo, nws tuaj yeem raug rau ntau yam kev kho mob, suav nrog kev pleev xim thiab varnishing. Polyurethane sealant sticks ua ke nto sai txaus. Hauv qhov no, kev ua haujlwm nrog cov khoom siv yuav tsum tau nqa mus rau hauv tus account lub sijhawm teeb tsa. Nws yuav tsum raug sau tseg tias kev siv cov khoom siv yuav tsum tau ua raws li qee cov cai tswj kev nyab xeeb. Tsis txhob cia cov khoom sib tov tuaj rau hauv kev sib cuag nrog cov tawv nqaij. Polyurethane sealant muaj nyob rau hauv ntim ntim. Cov khoom siv yuav tsum tsis txhob khaws cia ntawm qhov kub thiab txias. Qhov nruab nrab, lub neej txee ntawm lub pob tsis tau qhib yog li cuaj lub hlis. Nws raug nquahu kom siv cov khoom siv los ntawm cov pob qhib tam sim ntawd, vim tias cov khoom siv polyurethane sealant txauspoob nws cov khoom muaj txiaj ntsig sai sai.
Cov khoom yog homogeneous viscous pawg tsim los ntawm cov resins. Thaum cuam tshuam nrog cov dej noo nyob hauv huab cua, lub polymerization ntawm cov compound tshwm sim.
Cov yam ntxwv ntawm kev siv cov khoom siv yog txiav txim siab los ntawm nws cov yam ntxwv ua haujlwm. Ntawm cov yam ntxwv tseem ceeb, nws yog ib qho tsim nyog yuav tsum nco ntsoov kev lag luam hauv kev siv, qhov tsis muaj shrinkage, kev tsim khoom ntawm daim ntawv thov, thiab lub sijhawm luv luv. Tsis muaj qhov tseem ceeb me me yog cov khoom nplaum, nrog rau elasticity, lub zog, durability, thiab kev tuav pov hwm. Polyurethane sealant kuj tseem siv tau ntawm qhov kub txaus txaus.
Cov khoom ua haujlwm ntawm cov khoom tso cai rau siv txhua qhov chaw. Polyurethane sealant yog tshwj xeeb tshaj yog siv dav hauv kev tsim kho rau kev sib khi seams, ob chav glazed qhov rais, rau cov pas dej da dej, thiab cov vov tsev. Raws li txoj kev siv, cov khoom tuaj yeem ua tau ob hom.
Ntawm qee qhov chaw, cov khoom siv yog siv los ua kua mastic. Nyob rau tib lub sij hawm, ib tug heev elastic, ruaj waterproof membrane yog tsim nyob rau saum npoo, uas yog resistant rau tej yam tsis zoo ib puag ncig: microorganisms, ultraviolet hluav taws xob, thiab lwm yam.
Lub sealant ntau dua yog siv los sau cov seams, pob qij txha, nrog rau kev sib khi ntawm cov pob qij txha ntawm qee yam khoom. Feem ntau, cov tebchaw kuj siv los koom nrog cov ntaub ntawv uas muaj qhov sib txawv loj hauvlub cev muaj zog.
Qhov taw qhia tseem ceeb thaum xaiv lub sealant yog nws qhov hardness. Hardness nyob rau hauv cov ntaub ntawv no yog lub peev xwm los tiv thaiv nkag mus rau hauv lub composition ntawm lwm yam khoom. Yog li, lub sealant nrog qhov ntsuas ntawm 15 yog siv los cais cov pob qij txha vov tsev, interpanel seams, txuas cov rooj sib txoos ntawm cov qauv ua ntej. Qib hardness ntawm 25 tso cai rau cov khoom siv los kaw cov pob qij txha uas yuav raug dej rau lub sijhawm ntev.
