kuwala stabilizer
Magetsi amagwiritsidwa ntchito kuteteza mapulasitiki ndi zinthu zina kuti zisaonongeke-ku cheza cha ultraviolet kwa nthawi yaitali. Kuwonekera kwa mapulasitiki ku cheza cha ultraviolet kuchokera ku dzuwa kumayambitsa kuwonongeka kudzera mu njira ya photooxidation. Izi zikhoza kukhala ndi zotsatira zosafunika zambiri kuphatikizapo kusintha kwa maonekedwe (kusinthika, kusintha kwa gloss ndi / kapena choko), kuchepetsa mphamvu zamakina ndi kupanga zolakwika zooneka ngati ming'alu. Nyali za fluorescent zomwe zimagwiritsidwa ntchito powunikira m'nyumba zimatulutsanso kuwala kwa UV, koma motsika kwambiri kuposa kuwala kwa dzuwa.
Monga momwe zimakhalira ndi okosijeni wamafuta, photooxidation ndi njira yolumikizirana ndi ma free radicals ndi hydroperoxide intermediates. Makina opangira photostabilizer amalepheretsa izi mwa kuthamangitsa ma radiation oyipa a UV kapena mopikisana nawo.
Zolepheretsa amine light stabilizers (HALS) makamaka zimagwira ntchito posakaza ma free radical intermediates munjira ya photooxidation. HALS ndiwothandiza kwambiri pakukhazikika kwa ma polyolefin, ma polima a styrenic ndi mapulasitiki ena auinjiniya.
Zoyatsira ultraviolet (UV) zimagwira ntchito poteteza mkati mwa zigawo zapulasitiki kuti zisawononge kuwala kwa UV. Zogulitsazi zimadziwika ndi kuyamwa mwamphamvu kwambiri kwa UV komanso kuchuluka kwa photostability kobadwa nako. Zoyezera UV zimagwira ntchito bwino pakukhazikitsa mapulasitiki ambiri, kuphatikiza ma PVC ndi mapulasitiki a engineering. Amagwiritsidwanso ntchito pamapaketi apulasitiki kuti ateteze zomwe zili mu phukusi ku radiation ya UV.
Kuphatikiza kwa HALS ndi zoyatsira UV nthawi zambiri zimawonetsa magwiridwe antchito pamtundu wa stabilizer wokha.
