Nā ʻano mea hoʻopaʻa māmā
ʻElua ʻano o nā stabilizer māmā. ʻO kekahi mea he UV absorber, nāna e hoʻopau i nā kukuna UV ʻino e pale i ka uhi. ʻO ka mea ʻē aʻe ke kāohi ʻia ka amine light stabilizer, hiki ke hopu i nā radical manuahi a pale i ka hoʻohaʻahaʻa ʻana.
Hoʻopili nā mea hoʻoheheʻe UV i ke kukui UV a hoʻokūkū me nā chromophores i ʻāpana o ka iwi kuamoʻo polymer e pale i ka hōʻino. ʻO lākou nā mea hoʻohui kala ʻole a ʻaneʻane ʻole me ka absorption ikaika i ka ʻāpana ultraviolet o ka spectrum. Hoʻololi nā mea hoʻopau UV i ka ikehu māmā i ka wela.
Hoʻohana ʻia ʻo Hindered Amine Light Stabilizers (HALS) e paʻa i nā radical manuahi ma mua o ka hiki ʻana mai o nā hopena e hiki ai ke hōʻino. Kāohi ka HALS i ka hoʻoheheʻe wela. ʻO nā polymers i loaʻa ka HALS e kūpaʻa i ka photodegradation ma hope o ka holo ʻana i ka HALS. ʻO ka wehewehe ʻana no kēia ʻano, ʻo nā huahana oxidation o HALS, e like me nā hydroxylamines a me nā aminoethers, hiki ke pale i ka photodegradation. Hiki i nā hydroxylamines a me nā aminoether ke hoʻopaʻa i nā radical peroxide.
