Ibikoresho byo gutwika polyurethane bikunda kuba umuhondo mugihe bitewe nigihe kinini cyo kumurika urumuri ultraviolet cyangwa ubushyuhe, bigira ingaruka kumiterere no mubuzima bwa serivisi. Mu kwinjiza UV-320 na 2-hydroxyethyl thiophosphate mu kwagura urunigi rwa polyurethane, hateguwe polyurethane ishingiye ku mazi idafite ingufu kandi ifite imbaraga zo kurwanya umuhondo. Binyuze mu gutandukanya amabara, gutuza, gusikana microscope ya elegitoronike, X-ray ya ecran hamwe nibindi bizamini, byagaragaye ko itandukaniro ryamabara yose △ E yuruhu rwavuwe hamwe nibice 50 bya polyurethane y’amazi adafite imbaraga hamwe no kurwanya umuhondo byari 2.9, icyiciro cyo guhindura ibara cyari icyiciro 1, kandi habayeho guhindura ibara rito cyane. Ufatanije n’ibipimo ngenderwaho byerekana imbaraga zuruhu rwinshi kandi birwanya kwambara, byerekana ko polyurethane yateguwe yumuhondo irwanya umuhondo irashobora kunoza ibara ryumuhondo ryuruhu mugihe ikomeza imiterere yubukanishi no kwambara.

Uko imibereho yabantu imaze gutera imbere, abantu bafite byinshi basabwa kugirango bicare ku ntebe z’uruhu, ntibabasaba gusa ko bitagira ingaruka ku buzima bw’abantu, ahubwo banabasaba gushimisha ubwiza. Polyurethane ishingiye ku mazi ikoreshwa cyane mu bikoresho byo gutwikisha uruhu kubera umutekano wacyo mwiza ndetse n’imikorere idafite umwanda, gloss nyinshi, hamwe n’imiterere ya amino methylidynephosphonate isa n’uruhu. Nyamara, polyurethane ishingiye kumazi ikunda kuba umuhondo bitewe nigihe kirekire cyumucyo cyangwa ubushyuhe bwa ultraviolet, bigira ingaruka mubuzima bwumurimo wibikoresho. Kurugero, ibikoresho byinshi byinkweto byera polyurethane bikunze kugaragara nkumuhondo, cyangwa kurwego runini cyangwa ruto, hazaba umuhondo munsi yumucyo wizuba. Niyo mpamvu, ni ngombwa kwiga kurwanya kurwanya umuhondo wa polyurethane ishingiye ku mazi.

Hano hari uburyo butatu bwo kunoza ubukana bwumuhondo wa polyurethane: guhindura igipimo cyibice bikomeye kandi byoroshye no guhindura ibikoresho fatizo bivuye kumuzi, kongeramo inyongeramusaruro na nanomaterial, no guhindura imiterere.

. polyurethane irashobora kugumana imiterere yibanze yimpu mugihe itezimbere cyane ikirere cyayo.

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. Bitewe ningaruka zoguhindura imiyoboro ya disulfide, iyi miyoboro ihora ivunika kandi ikongera kubakwa munsi yumucyo wa ultraviolet, ugahindura ingufu zumucyo ultraviolet mukurekura ingufu zubushyuhe. Umuhondo wa polyurethane uterwa nimirasire yumucyo ultraviolet, itera imiyoboro yimiti mubikoresho bya polyurethane kandi igatera guhuza imiyoboro no kuvugurura ibintu, biganisha kumihindagurikire yimiterere no guhinduka umuhondo wa polyurethane. Kubwibyo, muguhuza imiyoboro ya disulfide mubice byamazi ashingiye kumazi ya polyurethane, hasuzumwe imikorere yo kwikiza no kumera yumuhondo wa polyurethane. Ukurikije ikizamini cya GB / T 1766-2008, △ E yari 4.68, naho icyiciro cyo guhindura ibara cyari urwego rwa 2, ariko kubera ko yakoresheje tetraphenylene disulfide, ifite ibara runaka, ntabwo ikwiriye polyurethane irwanya umuhondo.

Ultraviolet yamashanyarazi hamwe na disulfide irashobora guhindura urumuri ultraviolet rwinjijwe mukurekura ingufu zubushyuhe kugirango bigabanye ingaruka zumuriro wumucyo ultraviolet kumiterere ya polyurethane. Mugutangiza ibintu bigenda bisubirwamo 2-hydroxyethyl disulfide murwego rwo kwagura polyurethane synthesis, byinjizwa mumiterere ya polyurethane, ni uruganda rwa disulfide rurimo amatsinda ya hydroxyl byoroshye kubyitwaramo na isocyanate. Byongeye kandi, UV-320 imashini ya ultraviolet yatangijwe kugirango ifatanye nogutezimbere umuhondo wa polyurethane. UV-320 irimo amatsinda ya hydroxyl, kubera imiterere yayo yo kwitwara byoroshye hamwe nitsinda rya isocyanate, irashobora kandi kwinjizwa mubice byurunigi rwa polyurethane kandi bigakoreshwa mumyenda yo hagati yuruhu kugirango irusheho kurwanya umuhondo wa polyurethane.

Binyuze mu kizamini cyo gutandukanya ibara, byagaragaye ko kurwanya umuhondo wa polyureth yumuhondo Binyuze muri TG, DSC, kurwanya abrasion hamwe no gupima tensile, byagaragaye ko imiterere yumubiri wa polyurethane yateguwe n’ikirere hamwe n’uruhu rwavuwe na polyurethane yera bihuye neza, byerekana ko polyurethane idashobora guhangana n’ikirere mu gihe ishobora guteza imbere imiterere y’ikirere.