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Choyamwa cha ultraviolet (choyamwa cha UV) ndi choyamwa chopepuka chomwe chingathe kuyamwa mbali ya kuwala kwa ultraviolet ndi magwero a kuwala kwa fluorescent popanda kusintha chokha. Choyamwa cha ultraviolet chimakhala ufa woyera wa kristalo, kukhazikika bwino kwa kutentha, kukhazikika bwino kwa mankhwala, chopanda utoto, chopanda poizoni, chopanda fungo, chomwe chimagwiritsidwa ntchito kwambiri mu ma polima (mapulasitiki, ndi zina zotero), zokutira ndi zina zotero.

Zodzoladzola zambiri, makamaka zodzoladzola za pigment zosapangidwa ndi organic, zimatha kulimbitsa kuwala pang'ono zikagwiritsidwa ntchito zokha mu zinthu zapulasitiki. Pazinthu zapulasitiki zopaka utoto zomwe zimagwiritsidwa ntchito panja kwa nthawi yayitali, kukhazikika kwa kuwala kwa chinthucho sikungawongoleredwe ndi chodzoladzola chokha. Kugwiritsa ntchito chowongolera kuwala kokha ndikomwe kungalepheretse kapena kuchepetsa kukalamba kwa kuwala kwa zinthu zapulasitiki zopaka utoto kwa nthawi yayitali. Kumawonjezera kwambiri kukhazikika kwa kuwala kwa zinthu zapulasitiki zopaka utoto. Chowongolera kuwala chotchinga amine (HALS) ndi gulu la zinthu za amine zachilengedwe zomwe zimakhala ndi zotsatira zoletsa za steric. Chifukwa cha ntchito zake zowononga hydroperoxide, kuzimitsa mpweya woipa, kugwira ma free radicals, ndi kubwezeretsanso magulu ogwira ntchito, HALS ndiye chowongolera kuwala kwa pulasitiki chomwe chili ndi mphamvu yolimbana ndi kujambula zithunzi komanso kuchuluka kwakukulu kunyumba ndi kunja. Deta ikuwonetsa kuti chowongolera kuwala choyenera kapena njira yoyenera yophatikizira antioxidant ndi chowongolera kuwala imatha kukonza kukhazikika kwa kuwala ndi mpweya wa zinthu zapulasitiki zopaka utoto zakunja kangapo. Pa zinthu zapulasitiki zomwe zimapakidwa utoto ndi zinthu zowala zomwe zimawala komanso zomwe zimawala (monga cadmium yellow, uncored rutile, ndi zina zotero), poganizira momwe zinthu zowala zimawala, kuchuluka kwa kuwala kokhazikika kuyenera kuwonjezeredwa moyenerera.

Zoyatsira UV nthawi zambiri zimatha kugawidwa m'magulu malinga ndi kapangidwe ka mankhwala, gawo la zochita, ndi kagwiritsidwe ntchito, zomwe zafotokozedwa pansipa:

1. Kugawa malinga ndi kapangidwe ka mankhwala: zoyamwitsa za ultraviolet zitha kugawidwa m'magulu awiri: zoyamwitsa za ultraviolet za organic ndi zoyamwitsa za ultraviolet za inorganic. Zoyamwitsa za ultraviolet za organic zimaphatikizapo ma benzoates, benzotriazole, cyanoacrylate, ndi zina zotero, pomwe zoyamwitsa za ultraviolet za inorganic zimaphatikizapo zinc oxide, iron oxide, titanium dioxide ndi zina zotero.

2. Kugawa malinga ndi momwe ntchito ikuyendera: choyatsira kuwala kwa ultraviolet chingagawidwe m'magulu awiri: mtundu wa choyatsira kuwala ndi mtundu wa choyatsira kuwala. Choyatsira kuwala kwa UV choteteza chimatha kuwonetsa kuwala kwa UV motero chimaletsa kulowa m'thupi, pomwe choyatsira kuwala kwa UV chimatha kuyamwa kuwala kwa UV ndikukusintha kukhala kutentha kapena kuwala kowoneka.

3. Kugawa malinga ndi kagwiritsidwe ntchito: choyamwa cha ultraviolet chingagawidwe m'magulu okongoletsa, kalasi ya chakudya, kalasi ya mankhwala, ndi zina zotero. Zoyamwa za UV za kalasi yokongoletsera zimagwiritsidwa ntchito makamaka mu zoteteza ku dzuwa, zinthu zosamalira khungu ndi zodzoladzola zina, zoyamwa za UV za kalasi yodyera zimagwiritsidwa ntchito makamaka mu zopaka chakudya, ndipo zoyamwa za UV za kalasi yogulitsa mankhwala zimagwiritsidwa ntchito makamaka mu mankhwala.

Unilong Industry ndi katswiriWopanga UV, titha kupereka zotsatiraziMndandanda wa UVza zinthu, ngati mukufuna, chonde musazengereze kulankhulana nafe