Lead stabilizers, raws li lub npe qhia, yog ib hom stabilizer siv nyob rau hauv zus tau tej cov polyvinyl chloride (PVC) thiab lwm yam vinyl polymers. Cov stabilizers no muaj cov hmoov txhuas thiab ntxiv rau PVC formulations los tiv thaiv lossis txo cov thermal degradation ntawm cov polymer thaum ua thiab siv.Lead stabilizers hauv PVCtau muaj keeb kwm siv dav hauv PVC kev lag luam, tab sis lawv cov kev siv tau poob qis hauv qee thaj tsam vim muaj kev txhawj xeeb ntawm ib puag ncig thiab kev noj qab haus huv cuam tshuam nrog txhuas.
Cov ntsiab lus tseem ceeb txogtxhuas stabilizerssuav nrog:
Stabilizing Mechanism:
Lead stabilizers ua haujlwm los ntawm inhibiting thermal degradation ntawm PVC. Lawv neutralize cov acidic byproducts tsim thaum lub sij hawm tawg ntawm PVC ntawm qhov kub thiab txias, tiv thaiv kom tsis txhob ntawm lub polymer cov txheej txheem kev ncaj ncees.
Daim ntawv thov:
Cov hmoov txhuas stabilizers tau ib txwm siv rau hauv ntau yam kev siv PVC, nrog rau cov kav dej, cable rwb thaiv tsev, profiles, nplooj ntawv, thiab lwm yam khoom siv.
Thaum tshav kub kub stability:
Lawv muab kev ruaj ntseg kub zoo, tso cai rau PVC ua tiav ntawm qhov kub thiab txias yam tsis muaj kev puas tsuaj loj.
Compatibility:
Lead stabilizers paub txog lawv kev sib raug zoo nrog PVC thiab lawv lub peev xwm los tswj cov khoom siv kho tshuab thiab lub cev ntawm cov polymer.
Xim Retention:
Lawv ua rau cov xim ruaj khov ntawm cov khoom siv PVC, pab tiv thaiv kom tsis txhob muaj xim los ntawm thermal degradation.
Regulatory Considerations:
Kev siv cov hmoov txhuas stabilizers tau ntsib ntau txoj cai txwv vim kev txhawj xeeb ntawm ib puag ncig thiab kev noj qab haus huv cuam tshuam nrog kev raug lead. Cov hmoov txhuas yog cov tshuaj lom, thiab nws cov khoom siv hauv cov khoom siv thiab cov khoom siv tau raug txwv los yog txwv tsis pub nyob hauv ntau thaj tsam.
Hloov mus rau lwm txoj kev:
Hauv kev teb rau ib puag ncig thiab kev noj qab haus huv cov cai, PVC kev lag luam tau hloov mus rau lwm txoj kev stabilizers nrog kev cuam tshuam ib puag ncig qis. Calcium-raws li stabilizers, organotin stabilizers, thiab lwm yam uas tsis yog-lead stabilizers yog nce siv nyob rau hauv PVC formulations.
Environmental Impact:
Kev siv cov hmoov txhuas stabilizers tau ua rau muaj kev txhawj xeeb txog kev ua qias tuaj ib puag ncig thiab muaj peev xwm raug lead. Raws li qhov tshwm sim, kev siv zog tau ua kom txo qis kev cia siab ntawm cov hlau lead stabilizer kom txo tau lawv cov kev cuam tshuam ib puag ncig.
Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias qhov kev hloov mus deb ntawm cov hlau lead stabilizers qhia txog kev nthuav dav mus rau ntau tus phooj ywg ib puag ncig thiab kev noj qab haus huv hauv kev lag luam PVC. Cov neeg tsim khoom thiab cov neeg siv tau raug txhawb kom siv lwm txoj hauv kev uas ua tau raws li kev cai tswj hwm thiab pab txhawb rau kev ruaj khov. Yuav tsum nyob twj ywm paub txog cov cai tshiab thiab cov kev coj ua hauv kev lag luam hais txog kev siv cov khoom ruaj khov.
Post lub sij hawm: Feb-27-2024