Tisati tanzwisisa zvikonzero, tinofanira kutanga taziva kuti chii "kutsanya kwezuva"iri.
Kutsanya kwezuva: kunoreva kugona kwezvinhu zvakadhayiwa kuchengetedza ruvara rwavo rwepakutanga pasi pezuva.Maererano nemitemo yakawanda, kuyerwa kwekutsanya kwezuva kunobva pachiedza chezuva sechiyero.Kuti zvive nyore kutonga murabhoritari, magetsi ekugadzira anowanzo shandiswa uye anogadziriswa kana zvichidikanwa.Chinonyanya kushandiswa chemwenje sosi ndeye hernia light, asi kabhoni arc marambi anoshandiswa zvakare.Pasi pekuvhenekera kwechiedza, dhayi inotora simba rechiedza, chiyero chesimba chinowedzera, uye mamorekuru ari mumamiriro emufaro.Hurongwa hweruvara hwemamorekuru edhayi hunochinja kana kuparadzwa, zvichiita kuti dhayi iparare zvokonzera kushanduka kana kupera.
1. Mhedzisiro yechiedza padhayi
Kana mamorekuru edhayi anotora simba rephoton, ichaita kuti maerekitironi ekunze evalence emorekuru achinje kubva pasi kuenda kunzvimbo yekunakidzwa.
Photochemical reactions inoitika pakati pemafaro edhayi mamorekuru uye mamwe mamorekuru, zvichikonzera kufivha kwedhayi uye photobrittleness yefiber.
2.Zvinhu zvinokanganisa kutsanya kwechiedza chedhayi
1).Chiedza chechiedza uye wavelength yechiedza chinopenya;
2).Environmental factors;
3).Mishonga yemakemikari uye hurongwa hwehurongwa hwefibers;
4).Simba rekubatana pakati pedhayi nefiber;
5).Kemikari chimiro chedhayi;
6).Dye concentration uye aggregation state;
7).Kufurira kwekugadzira dikita padhayi photofading;
8).Kufurira kwezvinowedzera.
3.Nzira dzekuvandudza kutsanya kwezuva kwedhayi
1).Kuvandudza chimiro chedhayi kuitira kuti igone kushandisa simba rechiedza ichideredza kukanganiswa kwedhayi yemavara system, nekudaro kuchengetedza ruvara rwekutanga;ndiko kuti, madhayi ane high light fastness anowanzotaurwa.Mutengo wedhayi akadaro kazhinji wakakwira kupfuura wedhayiwo zvawo.Kune machira ane zvakakwirira zvezuva zvinodiwa, iwe unofanirwa kutanga watanga nekusarudza dhayi.
2).Kana jira rave rakadhayiwa uye kukurumidza kwechiedza hakusviki zvinodiwa, inogona zvakare kuvandudzwa nekushandisa zvinowedzera.Wedzera zvinowedzerwa zvakakodzera panguva yekugadzira dhayi kana mushure mekudhaya, kuitira kuti kana yaiswa pachiedza, ichaita nechiedza pamberi pedhayi uye ichipedza simba rechiedza, nekudaro ichidzivirira mamorekuru edhayi.Kazhinji yakakamurwa kuva ultraviolet absorbers uye anti-ultraviolet ejenti, pamwe chete anonzi zuva fastness enhancers.
Kumhanya kwezuva kwemachira ane ruvara rwakajeka akadhayiwa nedhayi dzinoshanda
Kupera kwechiedza kwedhayi dzinoshanda chinhu chakaoma kwazvo chephotooxychlorination reaction.Mushure mekunzwisisa iyo photofading meshini, isu tinogona nekuziva kugadzira zvimwe zvipingamupinyi kune photooxidation reaction kana tichigadzira mamorekuru edhayi kunonoka kupera kwechiedza.Semuenzaniso, dhayi dzeyero dzine dolsulfonic acid groups uye pyrazolones, dhayi dzebhuruu dzine methyl phthalocyanine uye disazo trichelate mhete, uye dhayi dzvuku dzine simbi complexes, asi dzichiri kushaya dzvuku rekudzivirira kwezuva.Reactive dhayi kuti chiedza fastness.
Kutsanya kwechiedza kwezvinhu zvakadhayiwa kunosiyana nekuchinja kwedhayi.Kune machira akadhayiwa nedhayi imwechete pane imwechete fiber, kukurumidza kukurumidza kunowedzera nekuwedzera kwekudhayira.Iko kuiswa kwedhayi kwemachira ane mavara akajeka kwakaderera uye kukurumidza kwechiedza kwakaderera.degree rakadonha saizvozvo.Zvisinei, chiedza chekukurumidza kwedhayi dzakajairwa pakadhi rakadhindwa dhayi kadhi inoyerwa kana dhayi yekumisikidza iri 1/1 yeyakajairwa kudzika (kureva 1% owf kana 20-30g/l dhayi concentration).Kana iyo dhayi yekuisa iri 1/ 6. Muchiitiko che 1/12 kana 1/25, kukurumidza kwechiedza kuchadonha zvakanyanya.
Vamwe vanhu vakafunga kushandisa ma ultraviolet absorbers kuvandudza kukurumidza kwezuva.Iyi inzira isingadikanwi.Mishonga yakawanda ye ultraviolet inoshandiswa, uye inogona kuvandudzwa nehafu yenhanho, uye mari yacho yakakwirira kwazvo.Nokudaro, chete sarudzo inonzwisisika yedhayi inogona kugadzirisa dambudziko rekutsanya kwechiedza.
Nguva yekutumira: Jan-30-2024