nkhani

Ultraviolet absorber (UV absorber) ndi chokhazikika chomwe chimatha kuyamwa mbali ya ultraviolet ya kuwala kwa dzuwa ndi magwero a fulorosenti popanda kudzisintha. Ultraviolet absorber nthawi zambiri imakhala yoyera ya crystalline ufa, kukhazikika kwamafuta abwino, kukhazikika kwamankhwala, zopanda utoto, zopanda poizoni, zopanda fungo, zomwe zimagwiritsidwa ntchito polima (pulasitiki, etc.), zokutira ndi zina zotero.

Mitundu yambiri, makamaka inorganic pigment colorants, imatha kusewera pang'onopang'ono yokhazikika ikagwiritsidwa ntchito yokha muzinthu zapulasitiki. Pazinthu zapulasitiki zamitundu kuti zigwiritsidwe ntchito kwa nthawi yayitali panja, kukhazikika kwa chinthucho sikungawongoleredwe ndi utoto wokha. Kugwiritsa ntchito stabilizer kokha kumatha kuletsa kapena kuchedwetsa kukalamba kwazinthu zamapulasitiki achikuda kwa nthawi yayitali. Kupititsa patsogolo kukhazikika kwa kuwala kwazinthu zapulasitiki zamitundu. Hindered amine light stabilizer (HALS) ndi gulu la organic amine mankhwala okhala ndi steric hindrance effect. Chifukwa cha ntchito zake zowola hydroperoxide, kuzimitsa mpweya wowonjezera, kutsekera ma radicals aulere, ndikubwezeretsanso magulu ogwira ntchito, HALS ndiye pulasitiki wokhazikika wokhazikika wothana ndi kujambula zithunzi komanso kuchuluka kwakukulu kunyumba ndi kunja. Deta ikuwonetsa kuti kuwala koyenera kokhazikika kapena njira yoyenera yophatikizira ya antioxidant ndi kuwala kokhazikika kumatha kusintha kukhazikika kwa kuwala ndi mpweya wa zinthu zapulasitiki zakunja zakunja kangapo. Pazinthu zapulasitiki zopakidwa utoto wowoneka bwino komanso wowoneka bwino (monga cadmium yellow, rutile yopanda uncored, ndi zina zotero), poganizira zamphamvu yojambula zithunzi za utoto, kuchuluka kwa kuwala kokhazikika kuyenera kuonjezedwa moyenerera.

Ma UV absorbers amatha kugawidwa molingana ndi kapangidwe ka mankhwala, kagawo kakang'ono kantchito ndikugwiritsa ntchito, zomwe zafotokozedwa pansipa:

1.Kugawa molingana ndi kapangidwe kake: Zotulutsa za ultraviolet zitha kugawidwa kukhala zotulutsa za ultraviolet ndi organic ultraviolet absorbers. Organic ultraviolet absorbers makamaka monga benzoates, benzotriazole, cyanoacrylate, etc., pamene inorganic ultraviolet absorbers makamaka monga zinc oxide, iron okusayidi, titanium dioxide ndi zina zotero.

2.Classification molingana ndi momwe amachitira: ultraviolet absorber ikhoza kugawidwa mumtundu wotetezera ndi mtundu wa mayamwidwe. Kuteteza ma UV absorbers amatha kuwonetsa kuwala kwa UV ndipo motero amalepheretsa kulowa m'thupi, pomwe zotengera za UV zimatha kutenga kuwala kwa UV ndikusandutsa kutentha kapena kuwala kowoneka.

3.Classification malinga ndi ntchito: ultraviolet absorbent akhoza kugawidwa mu kalasi zodzikongoletsera, kalasi chakudya, mankhwala kalasi, etc. Zodzikongoletsera kalasi UV absorbers makamaka ntchito sunscreen, mankhwala chisamaliro khungu ndi zodzoladzola zina, chakudya kalasi UV absorbers makamaka ntchito chakudya. zonyamula katundu, ndi mankhwala kalasi UV absorbers zimagwiritsa ntchito mankhwala.

Unilong Industry ndi katswiriWopanga UV, titha kupereka zotsatiraziUV mndandandaza mankhwala, ngati mukufuna, chonde omasuka kulankhula nafe