Factors zvinopesvedzera dhayi kukurumidza kuenda kune zuva uye nzira dzekuvandudza

Kupisa kwezuva kunoreva kugona kunoita dhayi kuti ichengetedze ruvara rwayo rwekutanga pasi pezuva. Sezvo mutemo wenguva dzose, kutsunga kwekutsanya kukurumidza kuenda kune etheric sunlight ndiyo yakajairwa.Kuri murabhoritari, masarobhoti emagetsi emagetsi anowanzoshandiswa kuitira nyore kutonga, uye anotariswa kana zvichidikanwa. Iyo inonyanya kuzivikanwa mwenje wechiedza ndeye hernia mwenje, asiwo marasha arc mwenje. Pasi pekutsamwa kwechiedza, dhayi yacho inobata simba remagetsi, huwandu hwesimba rinowedzera, mamorekitori ari mumamiriro ekushanda, uye chimiro chemavara emamorekuru edhayi anochinja kana kuti aparara, zvobva zvaita kuti dhayi ridzore uye ribvise.

 

1. Kufuridzira kwechiedza pane dhayi

Kana dhayeti redhayi rinotora simba reimba, rinoita kuti valence ekunze maelekitori achinje kubva pasi pevhu kuenda kunofara nyika.

Zvinoenderana nezvimiro zvakasiyana, nzira dzakasiyana dzekusimbisa dzinogona kuitika mumamorekuru edhayi, kusanganisira π → π *, n → π *, CT (mhosva yekuchinjisa), S → S (singlet state), S → T (triplet state), nyika mamiriro → yekutanga kufara nyika uye pasi mamiriro → yechipiri kufara nyika. Iyo ivhu renzimbo yekunyorwa yakanyorwa seS0, uye yekutanga neyechipiri kufara imwe yakanyorwa seS1 uye S2, zvichiteerana. Iyo inoenderana trilinear nyika inomiririrwa T0, T1, uye T2.

Mukati me activation, dhayi mamorekuru akaiswa mukati akasiyana-siyana eanosimba masimba e-elekitoni, masimba avo echinzvimbo anowedzera achaderedzwa, simba richashandurwa kupisa nekuparara, nzira iyi yekudzora simba inonzi vibrational passivation. Mukati me vibration passivation, iyo inonakidza State of S2 ine yakaderera vibrate simba level inoshandurwa kuve inonakidza mamiriro S1 ine yakakwirira vibration simba level, uye vibration passivation icharamba ichiitika. Nenzira iyi, S2 inonakidza nyika kubva kumusoro sosi simba inoshandurwa nekukurumidza kune S1 inonakidza nyika kubva kune yakaderera vibrational simba level. Iko kushandurwa pakati peS2 neS1 elektroni masimba pasi pemamiriro ezvinhu akaenzana esimba hakuchinji shanduko yemagetsi elekisheni kuwanda, iyo inonzi mukati shanduko. Iko zvakare kune shanduko pakati pekuimba uye matatu, kubva kuS1 kusvika T1 kufara. Iko kushandurwa kwema elekitoni simba dunhu riri pasi pemamiriro ezvinhu akaenzana esimba kunangana inonzi intersystem chiteshi. Nekuda kwe "kurambidzwa" kwemutemo we electron spin sarudzo, mwero we intersystem crossover kazhinji wakaderera.

Mhedzisiro yekuita mafoto pakati peiyo yakashongedzwa dhaye mamorekuru uye mamwe mamorekuru anoguma nekuita kupera kwemagetsi dhayi uye kujekesa kurasikirwa kurasikirwa kwefiber.

2. Izvo zvinhu zvinokanganisa kukurumidza kumwenje yedhayi;

 a. Wavelength yechiedza chechiedza uye irradiation mwenje;

 b. Zvinhu zvakasikwa;

 c. Chemical zvivakwa uye kurongeka kurongeka kwemafupa;

 d. Kubatanidza simba yedhayi uye fiber;

 e. Chemical chimiro che dhayi;

 f. Dhayi kusungwa uye kuunganidzwa mamiriro;

 g. Kukanganisika kwekutsvaira kwekufungidzira pane dhayi yekutora mifananidzo;

 h. Kufurira kweanobatsira.

Pasi pesimba yedhayi inoyerera ruvara, masipo mushure mekukwepa haana kunyatsokwana, uye dhayi dzisina kupfekedzwa uye dhayeti hydrolytic inosara pane iyo jira zvakare zvinokanganisa kukurumidza kwekukurumidza kwemadhayi, ayo pachena ari akaderera pane ayo akaomeswa anoshanda. Kunyanya kunyatsochenesa sipo, zviri nani kudzika kwechiedza.

Cationic yakaderera mamorekuru kana polyamine conduction maini uye cationic softeners anoshandiswa mukupedza machira, izvo zviri pachena zvichaderedza kukurumidza kusvika kuzuva.Zvino, tinofanirwa kutarisisa nemhedzisiro yeanogadzirisa vamiririri uye vanopfavisa pane kukurumidza kuenda kune zuva.

3.Methods yekuvandudza kukurumidza kumhanya kwezuva

a. Kuvandudza dhayi dhizaini kuti uderedze kukanganiswa pane dhayi bvudzi dhizaini paunenge uchishandisa mwenje magetsi, kuitira kuti uchengetedze iwo wekutanga ruvara; Izvi zvinowanzonzi sekumhanya kwakanyanya kune dhayi rezuva. Mutengo werudzi urwu rwe dyestuff unowanzo kuve yakakwirira kupfuura iyo yejestuff yakajairika.

b. Kana iyo mucheka wakadhayiwa, asi kutsanya kwezuva kusingaite zvinodiwa nemhosva, inogona zvakare kuvandudzwa kuburikidza nekuwedzerwa. Munguva yekucheka-cheka kana mushure mekukweva, zvinowedzera zvakakodzera zvinowedzerwa, kuitira kuti iwo mwenje unoitika pamberi peiyo dhayi kana yaiswa pachena, uye simba remwenje rinopedzwa, kuitira kudzivirira mamorekuru edhayi. General sub - UV inobata uye inorwisa - UV mumiririri, pamwe chete anti - sunburn nekukurumidza kusimudzira.


Nguva yekutumira: Jul-24-2020