Tooj liab insebitor lossis tooj liab dactive yog qhov txuas ntxiv nrog siv hauv cov ntaub ntawv polymer xws li plastics thiab roj hmab. Nws lub luag haujlwm tseem ceeb yog ua rau inhibit cov laus catalalytic cov nyhuv ntawm tooj liab lossis tooj liab, lossis cov khoom siv kho tshuab los ntawm kev sib cuag nrog tooj liab. Nws yog ib qho tshwj xeeb nyob hauv teb xws li xaim xaim, cable sheath, ntim ntim ntim ntim, thiab lwm yam.
Tooj liab thiab nws cov alloys (xws li cov xov tooj (xws li dav siv hauv kev sib chwv nrog qee cov ntaub ntawv polymer (xws li pvc, polyethylene), nws yuav ua rau muaj cov teeb meem hauv qab no:
Catalytic oxidation:
Cu2 + yog ib qho muaj zog oxidation catalyst uas accelidative the oxidative molecular characts, tshwj xeeb tshaj yog nyob rau puag ncig kub thiab noo noo.
Acid corrosion:
Nyob rau hauv halogenated cov ntaub ntawv xws li PVC, tooj liab yuav hnov mob nrog cov decomposed hcl2), ntxiv nrawm nrawm cov ntaub ntawv decomposition (tus kheej catalicatic nyhuv).
Cov tsos mob:
Lub tsiv teb tsaws ntawm tooj liab ions tuaj yeem ua rau cov xim liab lossis dub (tooj liab xeb) kom tshwm rau ntawm cov khoom, cuam tshuam rau nws cov tsos.
Cov kws kho teeb meem ntawm kev ua ntawm cov deactivator
Duectivators suppress qhov tsis zoo ntawm tooj liab los ntawm cov hau kev hauv qab no:
Chelated tooj liab ions:
Ua ke nrog Dawb Cu2 +, ruaj khov ua ke yog tsim los thaiv lawv cov kev ua haujlwm catalytic (xws li Benzotriazole teb).
Passivation ntawm tooj liab nto:
Ua cov yeeb yaj kiab tiv thaiv nyob rau saum npoo ntawm tooj liab kom tiv thaiv cov tooj liab ions (xws li organic phosphorus sib txuas).
Nruab nrab acidic tshuaj:
Nyob rau hauv PVC, qee tus deactivators tuaj yeem neutralize lub hcL ua los ntawm decomposition, xws li cov qev ntsev ruaj khov uas tseem muaj tooj liab tsis kam ua haujlwm).
Tooj liab deactivators yog ib hom neeg saib xyuas "hauv cov khoom siv polymer uas ua kom cov hlau nplaum xws li inhibiting ua haujlwm ntawm tooj liab. Tus tub ntxhais ntawm nws cov thev naus laus zis nyob rau hauv npliag tshuaj chelation thiab nto passivation, thaum ntsuas qhov kev ua phooj ywg ib puag ncig thiab raug nqi. Nyob rau hauv kev tsim cov xaim xaim, cov xeb sib txuas ntawmdeactivators, nplaim taws retardantThiab lwm yam kev sib ntxiv yog tus yuam sij los xyuas kom lub sijhawm kev ntseeg tau ntev ntawm cov ntaub ntawv.
Lub sij hawm ncua: Mar-05-2025