I-Nanotechnology kanye ne-nanomatadium: I-Nanometer Titanium Dioxide kuma-Poscreen Poosmetics

I-Nanotechnology kanye ne-nanomatadium: I-Nanometer Titanium Dioxide kuma-Poscreen Poosmetics

Amagama wesilinganiso

Cishe ama-5% emisebe ebanzi ilanga linemisebe ye-ultraviolet nge-wavelength ≤400 nm. Imisebe ye-ultraviolet elangeni ingahlukaniswa: imisebe ye-wave-wave ultraviolet nge-wavelength ka-320 nm ~ 400 nm, ebizwa nge-a-hlobo nohlobo lwe-ultraviolet (UVA); Imisebe ye-medium-wave ultraviolet ene-wavelength ka-290 nm kuya ku-320 nm ibizwa nge-B-Type Ultraviolet Rays (UVB) kanye nemisebe ye-ultraviolet efushane nge-wavelength ka-20090 nm ibizwa nge-C-Type Ultraviolet Rays.

Ngenxa ye-wavelength yayo emfushane namandla aphezulu, imisebe ye-ultraviolet inamandla amakhulu abhubhisayo, angalimaza isikhumba sabantu, kubangele ukuvuvukala noma ukushiswa yilanga, futhi akhiqize umdlavuza wesikhumba. I-UVB yinto eyinhloko ebangela ukuvuvukala kwesikhumba nokushiswa yilanga.

1. Umgomo wokuvikela imisebe ye-ultraviolet ne-nano tio2

I-Tio _ 2 iyi-semiconductor ye-n-semiconductor. Uhlobo lwe-crystal lwe-nano-tio _ 2 lusetshenziswe kwizimonyo zesikrini se-sunnscreen ngokuvamile rutile, futhi ububanzi balo bunqunyelwe i-ev lapho kufakwa i-waventh ye-uvch futhi ujabule nge-waven ye-UV futhi ujabule nge-waven ye-UV futhi ujabule kakhulu ngasikhathi sinye, ngakho-ke i-tio _ 2 inomsebenzi we ukumunca imisebe ye-UV. Ngosayizi omncane wezinhlayiyana kanye nezingxenyana eziningi, lokhu kwandisa kakhulu amathuba okuvinjwa noma ukunqamula imisebe ye-ultraviolet.

2. Izici ze-nano-tio2 kuma-cosmetics we-sunscreen

2.1

Ukusebenza kahle kwe-UV ephakeme

Amandla okuvikela ama-ultraviolet wezimonyo ze-sunscreen avezwa yi-Sun Propect Factor (inani le-SPF), kanye nenani le-SPF, elingcono kakhulu le-Sunscreen. Isilinganiso samandla adingekayo ukukhiqiza i-erythema ephansi etholwayo yesikhumba ehlanganiswe nemikhiqizo ye-sunscreen emandleni adingekayo ukukhiqiza i-erythema ye-skin ngaphandle kwemikhiqizo yelanga.

Njengoba i-nano-tio2 inyoni futhi ihlakaze imisebe ye-ultraviolet, ibhekwa njengendawo enhle kakhulu ye-sunscreen ekhaya nakwamanye amazwe. Ngokuvamile, amandla we-nano-tio2 ukuvikela i-UVB yisikhathi esingu-3-4 ekaNano-ZNO.

2.2

Ibanga elifanele lobukhulu bezinhlayiya

Amandla okuvikela ama-ultraviolet we-nano-tio2 kunqunywa ngekhono lawo lokumunca kanye nekhono lokusakaza. Uma lincane ubukhulu bezinhlayiyana ze-nano-tio2, amandla aqine amandla e-ultraviolet amuncy. Ngokusho komthetho weRayleigh of Light Sisakaze, kukhona usayizi ophelele wezinhlayiyana wezinhlayiyana zekhono eliphakeme lokusakazeka le-nano-tio2 emisebeni ye-ultraviolet enama-wavelength ahlukene. Izivivinyo zibuye zikhombise ukuthi isikhathi eside se-wavewth of ultraviolet imisebe ye-ultraviolet, ikhono lokuvikela le-nano-tio 2 kuncike kakhulu emandleni ayo asakazeka; Okufushane kwe-wavelength, okuvikelekile kwawo okuningi kuncike emandleni awo amunconsi.

2.3

Ukungafani okuhle nokusobala

Ubukhulu bezinhlayiyana bokuqala be-nano-tio2 bungaphansi kwe-100 nm, ngaphansi kwe-wavelength yokukhanya okubonakalayo. Ngokweqiniso, i-nano-tio2 ingadlulisela ukukhanya okubonakalayo lapho kusabalazwe ngokuphelele, ngakho-ke kusobala. Ngenxa yokubonakala kwe-nano-tio2, ngeke imboze isikhumba lapho ingezwe kwizimonyo ze-sunscreen. Ngakho-ke, ingakhombisa isikhumba semvelo sobuhle bemvelo.Transparency kungenye yezinkomba ezibalulekile ze-nano-tio2 kuma-cosmetics esikrinini sunscreen. Eqinisweni, i-nano-tio 2 ibonakala obala kepha ayibonakali ngokuphelele kuma-cosmetics esikrinini selanga, ngoba i-nano-tio2 inezinhlayiya ezincane, indawo enkulu engaphezulu komhlaba, futhi kulula ukwenza ama-aggregates, ngaleyo ndlela kuthinta imikhiqizo.

2.4

Ukumelana Nezulu Okuhle

I-Nano-tio 2 yezimonyo zesikrini sunnscreen idinga ukumelana kwesimo sezulu (ikakhulukazi ukumelana nokukhanya). Ngoba i-nano-tio2 inezinhlayiya ezincane nomsebenzi ophakeme, izokhiqiza ama-elektroni umgodi ngemuva kokuthola imisebe ye-ultraviolet, okuholela ekuhlolweni kwama-oxidas. izinongo. Ngakho-ke, isendlalelo esisodwa noma ngaphezulu esibonakalayo, njenge-Silica, i-Alumina neZarconia, kumele ihlanganiswe ebusweni beNano-Tio2 ukuze ivimbele umsebenzi wayo we-photockhemical.

3. Izinhlobo nezimo zentuthuko ze-nano-tio2

3.1

Nano-tio2 powder

Imikhiqizo ye-nano-tio2 ithengiswa ngendlela ye-powder eqinile, engahlukaniswa nge-hydrophilic powder kanye ne-lipophilic powder ngokuya ngezindawo ezingaphezulu kwe-nano-tio2. I-Hydrophilic powder isetshenziswa ezimonyo ezisuselwa emanzini, kuyilapho i-lipophilic powder isetshenziswa ezimophini ezisuselwa ku-oyela. I-Hydrophilic powders ngokuvamile itholwa ukwelashwa okungaphezulu kwe-inorgan.

3.2

Umbala wesikhumba we-nano tio2

Ngoba izinhlayiya ze-nano-tio2 zihamba kahle futhi kulula ukusakaza ukukhanya okuluhlaza okwesibhakabhaka nge-wavelength emfushane ekukhanyiseni okubonakalayo, uma kungezwe kwizimonyo ze-sunscreen, isikhumba sizokhombisa ithoni eluhlaza futhi. Ukuze uqondanise umbala wesikhumba, imibala ebomvu efana ne-iron oxide ivame ukungezwa kumafomethi wezimonyo ekuqaleni. Kodwa-ke, ngenxa yomehluko ekujuleni nasekunciphiseni phakathi kwe-nano-tio2 _ 2 ne-iron oxide, imibala entantayo ivame ukwenzeka.

4. Isimo sokukhiqizwa seNano-Tio2 eChina

Ucwaningo oluncane-i-NANO-Tio2 _ 2 eChina lusebenza kakhulu, futhi izinga lokucwaninga le-theoretical lifinyelele ezingeni eliphakeme lomhlaba, kepha ucwaningo olusetshenzisiwe kanye nocwaningo lwezobunjiniyela alunakuguqulwa lube yimikhiqizo yezimboni. Ukukhiqizwa kwezimboni kweNano-Tio2 eChina kwaqala ngo-1997, eminyakeni engaphezu kwengu-10 ngemuva kweJapan.

Kunezizathu ezimbili ezivimba ikhwalithi kanye nokuncintisana kwemakethe kwemikhiqizo ye-nano-tio2 eChina:

① I-Appled Technology Research Lags ngemuva

Ucwaningo lobuchwepheshe besicelo ludinga ukuxazulula izinkinga zokwengeza inqubo kanye nomphumela wokuhlola we-nano-tio2 ohlelweni oluhlanganisiwe. Ukucwaninga kwesicelo seNano-Tio2 emikhakheni eminingi akukaze kwathuthukiswa ngokuphelele, kanye nocwaningo kwamanye ama-cosmetics, njengokuthi izimonyo zesikrini se-sunscreen, kudingeka ukuthi zikhuze ama-special technology, i-nano-tio2 _ 2 imikhiqizo ayikwazi ukwakha imikhiqizo ekhethekile yokuhlangabezana nezidingo ezikhethekile zemikhakha ehlukene.

② Ubuchwepheshe bokwelashwa komhlaba we-nano-tio2 budinga ukuqhubeka nokufunda

Ukwelashwa okungaphezulu kufaka phakathi ukwelashwa okungaphezulu kwe-inorganic kanye nokwelashwa komhlaba okungaphezulu. Ubuchwepheshe bokwelashwa okungaphezulu kwenziwa ngefomula ye-ejenti yokwelashwa komhlaba, ubuchwepheshe bokwelashwa komhlaba kanye nemishini yokwelashwa engaphezulu.

5. Ukuphetha amazwi

Ukusebenza okusobala, ukusebenza kwe-ultraviolet, ukungafani kanye nokumelana nokukhanya kwe-nano-tio2 kuma-cosmetics esikrinini abalulekile ukwehlulela ikhwalithi yayo, nenqubo yokwelashwa komhlaba ne-nano-tio2 kuyisihluthulelo sokuthola lezinkomba zobuchwepheshe.