Cov tshuaj tiv thaiv tooj liab lossis cov tshuaj tua tooj liab yog cov tshuaj ntxiv uas siv rau hauv cov ntaub ntawv polymer xws li yas thiab roj hmab. Nws lub luag haujlwm tseem ceeb yog tiv thaiv cov teebmeem catalytic ntawm cov tooj liab lossis tooj liab ions rau cov ntaub ntawv, tiv thaiv kev puas tsuaj ntawm cov khoom, kev hloov pauv xim, lossis kev puas tsuaj ntawm cov khoom siv los ntawm kev sib cuag nrog tooj liab. Nws yog qhov tseem ceeb tshwj xeeb hauv cov teb xws li cov kav hlau, cov ntaub thaiv cable, cov ntaub ntawv ntim khoom hluav taws xob, thiab lwm yam.

Tooj liab thiab nws cov hlau sib xyaw (xws li cov xov hlau) yog siv dav hauv kev xa hluav taws xob, tab sis thaum tooj liab los sib cuag ncaj qha nrog qee cov ntaub ntawv polymer (xws li PVC, polyethylene), nws yuav ua rau muaj teeb meem hauv qab no:

Kev ua haujlwm catalytic oxidation:
Cu2+ yog ib qho catalyst oxidation muaj zog uas ua rau cov polymer molecular saw tawg sai dua, tshwj xeeb tshaj yog nyob rau hauv qhov kub thiab txias thiab noo noo.

Kev xeb ntawm cov kua qaub:
Hauv cov ntaub ntawv halogenated xws li PVC, tooj liab yuav ua rau HCl uas lwj tag los ua tooj liab chloride (CuCl2), ua rau cov khoom lwj tag sai dua (qhov cuam tshuam ntawm tus kheej).

Kev puas tsuaj ntawm qhov tsos:
Qhov kev tsiv teb tsaws chaw ntawm cov ions tooj liab tuaj yeem ua rau cov xim ntsuab lossis dub (xeb tooj liab) tshwm sim rau ntawm qhov chaw ntawm cov khoom, cuam tshuam rau nws qhov tsos.

Lub mechanism ntawm kev ua haujlwm ntawm deactivator
Cov tshuaj tua kab mob txo cov teebmeem tsis zoo ntawm tooj liab los ntawm cov hau kev hauv qab no:

Cov chelated tooj liab ions:
Ua ke nrog Cu2+ dawb, cov tshuaj ruaj khov tau tsim los thaiv lawv cov haujlwm catalytic (xws li cov tshuaj benzotriazole).

Passivation ntawm tooj liab nto:
Tsim ib daim zaj duab xis tiv thaiv rau ntawm qhov chaw ntawm tooj liab kom tiv thaiv kev tso tawm ntawm cov ions tooj liab (xws li cov organic phosphorus compounds).

Kev tshem tawm cov tshuaj acidic:
Hauv PVC, qee cov tshuaj tua kab mob tuaj yeem ua rau HCl tsis ua haujlwm los ntawm kev lwj, txo qhov xeb ntawm tooj liab (xws li cov tshuaj ua kom ntsev ruaj khov uas kuj muaj cov haujlwm tiv thaiv tooj liab).

Cov Khoom Siv Tooj Liabyog ib hom "Tus Saib Xyuas Tsis Pom Kev" hauv cov ntaub ntawv polymer uas ua rau lub neej ua haujlwm ntawm cov khoom xws li cov hlau sheathes ntev dua los ntawm kev txwv tsis pub ua haujlwm catalytic ntawm tooj liab. Lub hauv paus ntawm nws cov thev naus laus zis nyob rau hauv kev ua kom raug tshuaj lom neeg thiab kev ua kom nto passivation, thaum sib npaug kev phooj ywg ib puag ncig thiab kev siv nyiaj tsim nyog. Hauv kev tsim cov hlau casing, cov mis sib koom ua ke ntawmcov tshuaj tua kab mob, hluav taws kub retardantthiab lwm yam khoom ntxiv yog qhov tseem ceeb los xyuas kom meej tias cov ntaub ntawv muaj kev ntseeg siab mus sij hawm ntev.