Abubuwan da aka shafa na polyurethane suna da wuyar yin rawaya a tsawon lokaci saboda tsayin daka ga hasken ultraviolet ko zafi, yana shafar bayyanar su da rayuwar sabis. Ta hanyar gabatar da UV-320 da 2-hydroxyethyl thiophosphate a cikin sarkar sarkar na polyurethane, an shirya polyurethane mai ruwa na nonionic tare da kyakkyawan juriya ga launin rawaya kuma an yi amfani da shi zuwa suturar fata. Ta hanyar bambancin launi, kwanciyar hankali, microscope na lantarki, bakan X-ray da sauran gwaje-gwaje, an gano cewa jimlar launi △ E na fata da aka bi da su tare da sassan 50 na polyurethane na ruwa na nonionic tare da kyakkyawan juriya ga yellowing shine 2.9, canjin launi ya kasance 1 grade, kuma akwai kawai canjin launi kadan. Haɗe tare da mahimman alamun wasan kwaikwayo na ƙarfin ƙarfin ƙarfin fata da juriya, yana nuna cewa polyurethane da aka shirya mai launin rawaya zai iya haɓaka juriyar launin rawaya na fata yayin da yake riƙe kayan aikin injinsa da juriya.

Yayin da yanayin rayuwar mutane ya inganta, mutane suna da buƙatu masu yawa don kujerun kujerun fata, ba wai kawai suna buƙatar su zama marasa lahani ga lafiyar ɗan adam ba, har ma suna buƙatar su zama masu daɗi. Polyurethane na tushen ruwa ana amfani da shi sosai a cikin ma'aunin fata na fata saboda kyakkyawan aminci da aikin da ba shi da gurbatawa, babban sheki, da tsarin amino methylidynephosphonate kama da na fata. Duk da haka, polyurethane na tushen ruwa yana da haɗari ga launin rawaya a ƙarƙashin rinjayar dogon lokaci na hasken ultraviolet ko zafi, yana rinjayar rayuwar sabis na kayan. Alal misali, yawancin kayan polyurethane fararen takalma sukan bayyana launin rawaya, ko kuma zuwa mafi girma ko žasa, za a yi launin rawaya a ƙarƙashin hasken rana. Sabili da haka, yana da mahimmanci don nazarin juriya ga rawaya na polyurethane na tushen ruwa.

A halin yanzu akwai hanyoyi guda uku don inganta juriya na launin rawaya na polyurethane: daidaitawa daidaitattun sassa masu wuya da taushi da kuma canza kayan da aka samo daga tushen tushen, ƙara ƙwayoyin halitta da nanomaterials, da gyare-gyaren tsarin.

(a) Daidaita rabon sassa masu wuya da taushi da canza kayan albarkatun kawai zai iya magance matsalar polyurethane da kanta yana da saurin rawaya, amma ba zai iya magance tasirin yanayin waje akan polyurethane ba kuma ba zai iya biyan buƙatun kasuwa ta hanyar TG, DSC, juriya da juriya da gwajin tensile, an gano cewa kaddarorin jiki na shirye-shiryen da ke jure yanayin yanayi, polyurethane a cikin fata da aka bi da su tare da tsaftataccen yanayi na polyurethane. polyurethane zai iya kula da ainihin kaddarorin fata yayin da yake inganta yanayin juriya.

(b) Bugu da ƙari na kwayoyin halitta da nanomaterials kuma yana da matsaloli irin su babban adadin adadin da rashin daidaituwa na jiki tare da polyurethane, yana haifar da raguwa a cikin kayan aikin polyurethane.

(c) Abubuwan haɗin Disulfide suna da juzu'i mai ƙarfi mai ƙarfi, suna sa ƙarfin kunna su yayi ƙasa sosai, kuma ana iya karye su kuma a sake gina su sau da yawa. Saboda jujjuyawar juzu'i na haɗin gwiwar disulfide, waɗannan shaidu koyaushe suna karye kuma ana sake gina su a ƙarƙashin iskar hasken ultraviolet, suna canza makamashin hasken ultraviolet zuwa sakin makamashin zafi. Ana haifar da rawaya na polyurethane ta hanyar hasken ultraviolet, wanda ke motsa haɗin sinadarai a cikin kayan polyurethane kuma yana haifar da raguwar haɗin gwiwa da sake tsarawa, yana haifar da canje-canjen tsari da launin rawaya na polyurethane. Sabili da haka, ta hanyar gabatar da haɗin disulfide a cikin sassan sarkar polyurethane na tushen ruwa, an gwada aikin warkar da kai da rawaya na polyurethane. Dangane da gwajin GB/T 1766-2008, △E ya kasance 4.68, kuma darajar canjin launi shine matakin 2, amma tunda ta yi amfani da tetraphenylene disulfide, wanda ke da wani launi, bai dace da polyurethane mai juriya ba.

Masu shayar da hasken ultraviolet da disulfides na iya canza hasken ultraviolet da aka ɗauka zuwa sakin makamashin zafi don rage tasirin hasken ultraviolet akan tsarin polyurethane. Ta hanyar gabatar da 2-hydroxyethyl disulfide mai ƙarfi mai jujjuyawa a cikin matakin haɓaka haɓakar haɓakar polyurethane, an gabatar da shi a cikin tsarin polyurethane, wanda shine fili na disulfide wanda ke ɗauke da ƙungiyoyin hydroxyl waɗanda ke da sauƙin amsawa tare da isocyanate. Bugu da kari, UV-320 ultraviolet absorber da aka gabatar don yin aiki tare da inganta polyurethane ta rawaya juriya. UV-320 dauke da kungiyoyin hydroxyl, saboda halayensa na sauƙin amsawa tare da ƙungiyoyin isocyanate, kuma ana iya gabatar da su a cikin sassan sarkar polyurethane kuma ana amfani da su a tsakiyar gashin fata don inganta juriya na rawaya na polyurethane.

Ta hanyar gwajin bambance-bambancen launi, an gano cewa juriya na rawaya na polyureth na rawaya ta hanyar TG, DSC, juriya na abrasion da gwajin gwaji, an gano cewa abubuwan da ke cikin jiki na polyurethane da aka shirya da kuma fata da aka bi da su tare da polyurethane mai tsabta sun kasance daidai, yana nuna cewa polyurethane mai tsayayyar yanayi na iya kula da ainihin kaddarorin fata yayin da yake inganta yanayin juriya.