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Iye zvino vanhu vane sarudzo dzakawanda mukuchengetwa kweganda, zvinongori sunscreen zvinodarika zvinopfuura gumi marudzi, asi zvimwe zvigadzirwa zvekuchengetedza ganda zvinoita sekutarisira ganda zvinonyanya kukuvadza ganda redu. Saka isu tinosarudza sei zvigadzirwa zvekuchengetedza ganda zveganda redu? Ngatitaure nezve benzophenone-4, chinhu chakakosha muzvigadzirwa zvekuchengetedza ganda.

Chii chinonzi benzophenone-4?

Benzophenone-4musanganiswa webenzophenone, unonzi BP-4, makemikari formula C14H12O6S. Iyo chena kana yakareruka yero poda pakamuri tembiricha uye inogona kunyatsotora UV mwenje we285 kusvika 325 Im. SeAbroad spectrum ultraviolet absorber, BP-4 ine zvakanakira kunyudza mwero, isiri-chepfu, isiri-teratogenic mhedzisiro, mwenje wakanaka uye kugadzikana kwekupisa, nezvimwewo, UV inopinza BP-4 inogona kutora UV-A uye UV-B. panguva imwecheteyo, ikirasi I sunscreen yakagamuchirwa neUnited States FDA, United States uye nyika dzeEurope dzine huwandu hwekushandiswa kwepamusoro, inonyanya kushandiswa mukrimu yezuva uye zvimwe zvizoro zvezuva.

Uv absorbent BP-4haina muchetura, isingabatike, haiputike, iri nyore kunwisa hunyoro mumhepo, kuita kwakanakisa kwe acidic aqueous UV inonwisa, inogona kunwisa mwenje weUV. Inoshandiswa zvakanyanya se ultraviolet absorber yemvura-based polymer coatings nepepuru yepepuru kudzivirira iyo photocatalytic oxidation yemvura-based polymer coatings uye pepuru yepepuru; Iyo yakanaka sunscreen yezvizorwa uye UV inonyudza yekuvandudza mamiriro ekunze emachira eshinda.

Benzophenone inoshandiswa zvakanyanya mumidziyo yemumba senge magirazi ezuva, kurongedza chikafu, kuwacha uye zvigadzirwa zvekuchenesa kudzivirira kubva kuUV kuratidzwa. Inogona kusvibisa mvura yekunwa uye kutama kubva pakurongedza chikafu kuenda kuchikafu. Benzophenone inoshandiswa mune dzimwe ingi dzekurongedza chikafu uye inogona kutamira kuchikafu. Benzophenone inowanzoitika mune zvimwe zvekudya (zvakadai semazambiringa ewaini uye Muscat mazambiringa) uye inowedzerwa kune vamwe sechinhu chinonhuwira.

Muzvigadzirwa zvekuchengetedza munhu, benzophenone inoshandiswa sechinhu chinonhuwira kana kudzivirira zvigadzirwa zvakaita sesipo kubva pakurasikirwa nekunhuhwirira uye ruvara pasi pechiedza cheultraviolet. Benzophenone derivatives yakadai seBP2 uye oxybenzone (BP3) uyebenzophenone-4 (BP-4)anoshandiswa mu sunscreens. Oxybenzone inoshandiswa se ultraviolet absorber uye stabilizer, kunyanya mumapurasitiki uye sunscreens. Benzophenone uye oxybenzone anoshandiswawo mukuporiswa kwembambo nemuromo.

Chii chinonzi benzophenone-4 inoshandiswa mukuchengeta ganda?

Uv absorbent BP-4 ine zvakanakira chiedza chakanaka uye kugadzikana kwekupisa, uye inoshandiswa zvakanyanya mu sunscreen cream, cream, huchi, lotion, mafuta nezvimwe zvekuzora zuva. Kunyanya yakakodzera sunscreen, lotion, pendi, iyo yakawanda dosage ndeye 0.1-0.5%. Iyo yakajairika dosage ndeye 0.2-1.5%.

Uv absorberBP-4inonyungudika zviri nyore mumvura, uye mhinduro ine aqueous ine acidic, saka inoda kuderedzwa panguva yekushandiswa. Solution PH yakakura kupfuura 9 ichaita kuti kunyura kwewavelength kuve kutetepa, iko kushandiswa kukuru kwezuva nezuva uye zvimwe zvigadzirwa zvekuchengetedza ganda kudzivirira kuchembera kweganda kunokonzerwa nechiedza che ultraviolet.

Chii chinonzi benzophenone-4 inoshandiswa mukuchengeta ganda?