Muaj ntau ntau yam vim li cas silicone hloov daj, feem ntau suav nrog cov hauv qab no:
Ultraviolet hluav taws xob:Thaum raug tshav ntuj los yog muaj zog ultraviolet hluav taws xob rau lub sij hawm ntev, cov organic teeb meem nyob rau hauv silicone yuav undergo photooxidation cov tshuaj tiv thaiv, ua rau cov xim tig daj. Qhov no yog vim ultraviolet rays tuaj yeem rhuav tshem cov qauv molecular ntawm cov khoom siv silicone, ua rau nws maj mam muaj hnub nyoog thiab poob nws cov pob tshab lossis dawb.
Thermal aging:Nyob rau hauv qhov kub thiab txias, cov khoom siv silicone molecular chains tuaj yeem tawg lossis hla kev sib txuas, ua rau cov khoom hloov xim. Txawm hais tias silicone muaj qhov zoo thermal stability, lub sij hawm ntev raug rau qhov kub thiab txias yuav tseem ceev nws cov txheej txheem kev laus thiab tig xim daj.
Tshuaj lom neeg:Thaum silicone los rau hauv kev sib cuag nrog qee yam tshuaj, xws li roj, cov kuab tshuaj, oxidants, thiab lwm yam, nws yuav ua rau muaj tshuaj lom neeg ntawm nws qhov chaw lossis sab hauv, ua rau cov xim hloov. Cov tshuaj no tuaj yeem cuam tshuam nrog qee yam khoom hauv silicone, ua rau xim daj lossis xim dub.
impurity cuam tshuam:Cov impurities uas yuav nyob twj ywm thaum lub sij hawm tsim cov silicone, xws li hlau ions, organic impurities, thiab lwm yam, yuav txhawb lub oxidation thiab discoloration ntawm silicone nyob rau hauv tej yam kev mob. Cov impurities no tuaj yeem koom nrog cov txheej txheem oxidation ntawm silicone ua catalysts lossis reactants, ua rau cov xim hloov.
Decomposition ntawm additives:Qee cov tshuaj ntxiv ntxiv rau silicone, xws li tshuaj tua kab mob, tshuaj pleev xim, thiab lwm yam, tuaj yeem decompose thaum siv mus ntev, ua rau cov xim ntawm silicone hloov. Lub decomposition ntawm cov additives no yuav tsim cov xim xim, ua rau cov silicone tig daj.
Tsis tas li ntawd, qhov zoo ntawm silicone nws tus kheej kuj yog ib qho tseem ceeb uas cuam tshuam rau yellowing. Cov khoom siv silicone tsis zoo tuaj yeem sib xyaw nrog cov khoom siv tsis zoo lossis cov khoom tsis huv, ua rau cov silicone tig daj yooj yim. Yog li ntawd, thaum yuav cov khoom siv silicone, koj yuav tsum xaiv cov khoom uas txhim khu kev qha zoo thiab tsim nyog additives.
Txhawm rau txuas ntxiv kev pab cuam lub neej ntawm cov khoom siv silicone thiab tswj lawv txoj kev zoo nkauj, cov kev ntsuas hauv qab no tuaj yeem ua:
Tsis txhob raug tshav ntuj ntev los yog muaj zog ultraviolet rays.
Tswj kev siv kub thiab tsis txhob siv cov khoom siv silicone ntawm qhov kub thiab txias.
Khaws cov khoom silicone kom huv si thiab tsis txhob sib cuag nrog cov tshuaj xws li roj, cov kuab tshuaj, thiab lwm yam.
Xaiv cov khoom zoo silicone kom txo tau qhov cuam tshuam ntawm impurities thiab additive decomposition ntawm silicone.
Hauv cov ntsiab lus, qhov yellowing ntawm silicone yog tshwm sim los ntawm kev sib xyaw ua ke ntawm ntau yam. Los ntawm kev nkag siab txog cov laj thawj no thiab ua raws li kev tiv thaiv kev tiv thaiv, koj tuaj yeem txuas ntxiv lub neej kev pab cuam ntawm cov khoom siv silicone thiab tswj lawv txoj kev zoo nkauj.