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Vanhu vava nesarudzo dzakawanda mukuchengetedza ganda, zvinhu zvinodzivirira ganda kubva kuzuva zvinodarika mhando gumi, asi zvimwe zvinhu zvinodzivirira ganda zvinoita sekunge zvinokuvadza ganda redu. Saka tingasarudza sei zvigadzirwa zvekuchengetedza ganda zvakakodzera ganda redu? Ngatitaurei nezve benzophenone-4, chinhu chakakosha muzvigadzirwa zvekuchengetedza ganda.

Chii chinonzi benzophenone-4?

Benzophenone-4imusanganiswa webenzophenone, unonzi BP-4, makemikari fomura C14H12O6S. Iupfu chena kana yero yakapfava patembiricha yemumba uye inogona kupinza chiedza cheUV che285 kusvika 325 Im. Semushonga we ultraviolet wakakura, BP-4 ine mabhenefiti ekuwedzera kupinza, kusakuvadza, kusakonzera teratogenic effect, chiedza chakanaka uye kugadzikana kwekupisa, nezvimwewo, muchina weUV absorber BP-4 inogona kupinza UV-A neUV-B panguva imwe chete, imuchina we sunscreen we class I wakatenderwa neUnited States FDA, United States nenyika dzeEurope dzine kushandiswa kwakawanda, kunonyanya kushandiswa mu sunscreen cream nezvimwe zvizoro zve sunscreen.

Chinonyudza UV BP-4Haina chepfu, haibati moto, haiputi, iri nyore kunyudza hunyoro mumhepo, inoshanda zvakanaka kwazvo yekunyudza UV mumvura ine acidic, inogona kunyudza UV zvakanyanya. Inoshandiswa zvakanyanya se ultraviolet absorber ye polymer coatings yemvura uye pendi yepepuru kudzivirira oxidation ye photocatalytic ye polymer coatings yemvura uye pendi yepepuru; Inodzivirira zuva zvakanaka kumeso uye UV absorber yekuvandudza kusapindirana kwemamiriro ekunze kwemachira emvere.

Benzophenone inoshandiswa zvakanyanya muzvinhu zvemumba zvakaita semagirazi ezuva, kurongedza chikafu, kuwacha uye zvinhu zvekuchenesa kudzivirira kubva pakusviba neUV. Inogona kusvibisa mvura yekunwa uye kubva pakurongedza chikafu kuenda kuchikafu. Benzophenone inoshandiswa muinki dzemapakiti ezvekudya uye inogona kutamira kuchikafu. Benzophenone inowanikwa zvakasikwa mune zvimwe zvekudya (senge mazambiringa ewaini nemazambiringa eMuscat) uye inowedzerwa kune zvimwe sechinhu chinonhuhwirira.

Muzvigadzirwa zvekuchengetedza muviri, benzophenone inoshandiswa semushonga wekuwedzera kunhuhwirira kana kudzivirira zvigadzirwa zvakaita sesipo kuti zvisarasikirwa nekunhuhwirira kwavo neruvara pasi pechiedza cheultraviolet. Zvinhu zvinobva kuBenzophenone zvakaita seBP2 neoxybenzone (BP3) uyebenzophenone-4 (BP-4)zvinoshandiswa muzvinodzivirira zuva. Oxybenzone inoshandiswa semushonga we ultraviolet absorber uye stabilizer, kunyanya mupurasitiki ne sunscreens. Benzophenone ne oxybenzone zvinoshandiswawo mu nail polish ne lip balm.

Chii chinoshandiswa nebenzophenone-4 pakuchengetedza ganda?

Chinobvisa UV BP-4 chine zvakanakira zvechiedza chakanaka uye kugara zvakanaka pakupisa, uye chinoshandiswa zvakanyanya mukirimu yezuva, kirimu, huchi, mafuta, mafuta nezvimwe zvizoro zvezuva. Chinonyanya kukodzera sunscreen, lotion, pendi, chiyero chakajairika i0.1-0.5%. Chipimo chakajairika i0.2-1.5%.

Chinonyudza UVBP-4Inonyungudika nyore nyore mumvura, uye mvura ine acid, saka inofanira kunyungudika panguva yekushandiswa. Mhinduro ine PH inopfuura 9 ichaita kuti wavelength yemvura itete, kushandiswa kukuru kwezuva nezuva kwe sunscreen nezvimwe zvigadzirwa zvekuchengetedza ganda kudzivirira kukwegura kweganda kunokonzerwa nechiedza che ultraviolet.

Chii chinoshandiswa nebenzophenone-4 pakuchengetedza ganda?