zinthu

Mawu ofanana mu Chingerezi

antioxidant

makhalidwe a mankhwala

Choyatsira kuwala kwa ultraviolet ndi mtundu wa chokhazikika cha kuwala, chimatha kuyamwa kuwala kwa dzuwa ndi gwero la kuwala kwa fluorescent mu gawo la ultraviolet, koma chokha sichisintha.
Popeza kuwala kwa dzuwa kuli ndi kuwala kwa ultraviolet koopsa ku zinthu zamitundu yosiyanasiyana, kutalika kwake kwa mafunde ndi pafupifupi 290-460 nanometers, kuwala koopsa kwa ultraviolet kumeneku kudzera mu Redox reaction ya mankhwala, mamolekyu amitundu amawonongeka ndikutha.
Pali njira zakuthupi komanso zamakemikolo zopewera kuwonongeka kwa utoto kuchokera ku kuwala koipa kwa UV.
Apa pali kufotokoza mwachidule njira ya mankhwala, ndiko kuti, kugwiritsa ntchito ma UV absorbers kuteteza chinthucho kuti chiteteze bwino, kapena kufooketsa kuwonongeka kwa utoto wake.
Zoyatsira UV ziyenera kukhala ndi zinthu zotsatirazi
(1) imatha kuyamwa kuwala kwa ultraviolet mwamphamvu (makamaka kutalika kwa 290-400nm); (2) Kukhazikika bwino kwa kutentha, ngakhale pakukonza sikusintha chifukwa cha kutentha, kusasinthasintha kwa kutentha ndi kochepa; Kukhazikika bwino kwa mankhwala, palibe kuyanjana koyipa ndi zinthu zomwe zili mu chinthucho; (4) Kusokonezeka bwino, kumatha kufalikira mofanana mu chinthucho, palibe chisanu, palibe exudation; (5) Kukhazikika kwa photochemical kwa absorbent yokha ndi kwabwino, sikuwola, sikusintha mtundu; ⑥ Yopanda utoto, yopanda poizoni, yopanda fungo; ⑦ yokana kusamba m'madzi; ⑧ Yotsika mtengo komanso yosavuta kupeza; 9. Yosasungunuka kapena yosasungunuka m'madzi.
Ma absorber a UV amatha kugawidwa m'magulu otsatirawa malinga ndi kapangidwe kake ka mankhwala: salicylate esters, phenylketones, benzotriazoles, substituted acrylonitrile, triazines ndi blocked amines.

Chiyambi cha malonda ndi zinthu zake

Choyamwa cha ultraviolet ndi chomwe chimagwiritsidwa ntchito kwambiri ngati choyamwa kuwala, malinga ndi kapangidwe kake, chingagawidwe m'magulu awiri: salicylate esters, benzophenone, benzotriazole, substituted acrylonitrile, triazines, etc., ndipo chimagwiritsidwa ntchito kwambiri m'mafakitale monga benzophenone ndi benzotriazole. Choyamwa ndi chinthu chachitsulo, monga divalent nickel complex, nthawi zambiri chimakhala ndi ultraviolet absorbent, ndipo, synergistic effect, ultraviolet absorbent ndi mtundu wa kuwala, chomwe chimatha kuyamwa kuwala kwa dzuwa ndi kuwala kwa fluorescent mu gawo la ultraviolet, ndipo sichisintha.
Popeza kuwala kwa dzuwa kuli ndi kuwala kwa ultraviolet koopsa ku zinthu zamitundu yosiyanasiyana, kutalika kwake kwa mafunde ndi pafupifupi 290-460 nanometers, kuwala koopsa kwa ultraviolet kumeneku kudzera mu Redox reaction ya mankhwala, mamolekyu amitundu amawonongeka ndikutha.
Pali njira zakuthupi komanso zamakemikolo zopewera kuwonongeka kwa utoto kuchokera ku kuwala koipa kwa UV.
Apa pali chiyambi chachidule cha njira ya mankhwala, ndiko kuti, kugwiritsa ntchito ma UV absorbers kuteteza chinthucho kuti chiteteze bwino, kapena kufooketsa kuwonongeka kwa utoto wake.

gwiritsani ntchito

Imatha kuyamwa bwino kuwala kwa ultraviolet ndi kutalika kwa 270-380 nm, komwe kumagwiritsidwa ntchito makamaka pa polyvinyl chloride, polystyrene, unsaturated resin, polycarbonate, polymethyl methacrylate, polyethylene, ABS resin, epoxy resin ndi cellulose resin, ndi zina zotero. Ndi yoyenera kugwiritsa ntchito zinthu zowunikira monga filimu ya utoto, filimu ya utoto, mapepala amitundu ndi polima, ndi zina zotero. Ndi yoyenera kwambiri pazinthu zopanda utoto komanso zowala; Kuti igwire bwino ntchito, igwiritse ntchito ultraviolet absorber mwamphamvu komanso yogwira ntchito bwino.

phukusi ndi mayendedwe

B. Chogulitsachi chingagwiritsidwe ntchito,,25KG，BAERRLS。
C. Sungani yotsekedwa m'nyumba pamalo ozizira, ouma komanso opumira mpweya. Zidebe ziyenera kutsekedwa bwino mukatha kugwiritsa ntchito nthawi iliyonse musanagwiritse ntchito.
D. Chogulitsachi chiyenera kutsekedwa bwino panthawi yonyamula kuti chisasakanikirane ndi chinyezi, alkali ndi asidi wamphamvu, mvula ndi zinyalala zina.