Eminyakeni eyishumi edlule isidingo sokuthuthukiswa kokuvikelwa kwe-UVAkwakukhula ngokushesha.
Imisebe ye-UV inemiphumela emibi, okuhlanganisa ukushiswa yilanga, isithombe-ukuguga kanye nomdlavuza wesikhumba. Le miphumela ingavinjelwa kuphela ngokuvikela kuzo zonke izinhlobo zemisebe ye-UV, okuhlanganisa ne-UVA.
Ngakolunye uhlangothi kukhona nomkhuba wokunciphisa inani "lamakhemikhali" esikhumbeni. Lokhu kusho ukuthi i-UV abso isebenza kahle kakhuluama-rberkufanele itholakale ngenxa yesidingo esisha sokuvikelwa kwe-UV ebanzi.I-Sunsafe-BMTZ（I-Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine yakhelwe ukufeza le mfuneko. Ihlala inyakaza, incibilika kumafutha, isebenza kahle kakhulu futhi ihlanganisa uhla lwe-UVB kanye ne-UVA. Ngonyaka ka-2000, iziphathimandla zaseYurophu zengeze i-Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine ohlwini oluhle lwezifutho ze-UV zobuhle.
•I-UVA:Kudingeka amaqembu amabili e-ortho-OH ukuze kusabalale amandla ngendlela ephumelelayo ngokusebenzisa amabhuloho e-hydrogen angaphakathi kwama-molecule. Ukuze kutholakale ukumuncwa okunamandla ku-UVA, izindawo ze-para-positions zezingxenye ezimbili ze-phenyl kufanele zithathelwe indawo yi-O-alkyl, okuholela ku-bis-resorcinyl triazine chromophor.
•I-UVB:Iqembu le-phenyl elisele elixhunywe ku-triazine liholela ekumuncweni kwe-UVB. Kungabonakala ukuthi ukusebenza okuphezulu "kwe-spectrum egcwele" kufezwa nge-O-alkyl etholakala endaweni ye-para-position. Ngaphandle kwezinto ezincibilikisayo, ama-HPT cishe awancibiliki emafutheni ezimonyo. Abonisa izakhiwo ezijwayelekile zama-pigment (isb., amaphuzu aphezulu okuncibilika). Ukuze kwandiswe ukuncibilika ezigabeni zamafutha, isakhiwo sesihlungi se-UV sishintshiwe ngokufanele.
Izinzuzo:
Ukuvikelwa kwelanga okubanzi
Ifana kakhulu nezinye izihlungi ze-UV
Ukuqina kwefomula
Isikhathi sokuthunyelwe: Feb-18-2022