UV-ishobora gukira ibiti: Gusubiza ibibazo byinganda

Na Lawrence (Larry) Van Iseghem ni Perezida / Umuyobozi mukuru wa Van Technologies, Inc.

Mugihe cyo gukora ubucuruzi nabakiriya binganda ku rwego mpuzamahanga, twakemuye ibibazo bitangaje kandi twatanze ibisubizo byinshi bijyanye na UV-ishobora gukira. Ibikurikira nibimwe mubibazo bikunze kugaragara, kandi ibisubizo biherekeje birashobora gutanga ubushishozi bufasha.

1.Ni ubuhe buryo UV ishobora gukira?

Mu nganda zirangiza ibiti, hari ubwoko butatu bwingenzi bwa UV-ishobora gukira.

100% ikora (rimwe na rimwe byitwa 100% solide) UV-ishobora gukira ni imiti yimiti idafite amazi cyangwa amazi. Iyo ubisabye, igifuniko gihita gihura ningufu za UV bitabaye ngombwa gukama cyangwa guhumeka mbere yo gukira. Ibikoresho byakoreshwaga bifata uburyo bwo gukora urwego rukomeye binyuze muburyo butagaragara bwasobanuwe kandi bwitwa Photopolymerisation. Kubera ko nta guhumeka gukenewe mbere yo gukira, uburyo bwo gusaba no gukiza burakora neza kandi buhendutse.

Amazi yo mu mazi cyangwa ibishishwa biterwa na Hybrid UV-ishobora gukira bigaragara ko irimo amazi cyangwa umusemburo kugirango ugabanye ibintu bikora (cyangwa bikomeye). Uku kugabanuka kwibintu bikomeye bituma habaho ubworoherane mugucunga ubunini bwa firime itose, no / cyangwa mugucunga ubwiza bwikibiriti. Mugukoresha, iyi myenda ya UV ikoreshwa hejuru yimbaho ​​hakoreshejwe uburyo butandukanye kandi igomba gukama neza mbere yo gukira UV.

Ifu ya UV ishobora gukira nayo ni 100% igizwe nibisanzwe kandi mubisanzwe ikoreshwa muburyo bwimikorere ikoresheje amashanyarazi. Iyo bimaze gukoreshwa, substrate irashyuha kugirango ishonge ifu, isohoka kugirango ikore firime yo hejuru. Substrate yubatswe noneho irashobora guhita ihura ningufu za UV kugirango byorohereze gukira. Filime yubuso yavuyemo ntabwo ikiri ubushyuhe buhindagurika cyangwa bworoshye.

Hariho uburyo butandukanye bwi UV-ishobora gukira iboneka irimo uburyo bwa kabiri bwo gukiza (ubushyuhe bukora, ubushyuhe butera, nibindi) bushobora gutanga umuti mubice byo hejuru bitagaragajwe ningufu za UV. Iyi myenda ikunze kwitwa gukiza kabiri.

Hatitawe kubwoko bwa UV-bushobora gukira bwakoreshejwe, ubuso bwanyuma burangiza cyangwa igipande gitanga ubuziranenge budasanzwe, burambye hamwe nuburwanya.

2. Ni mu buhe buryo impuzu za UV zishobora gukira zifata ubwoko butandukanye bwibiti, harimo nubwoko bwibiti byamavuta?

UV-ishobora gukira yerekana neza ubwoko bwibiti byinshi. Ni ngombwa kumenya neza ko uburyo bwo gukiza buhagije butangwa binyuze mu gukiza no guhuza na substrate.

Hariho amoko amwe asanzwe afite amavuta menshi kandi ashobora gusaba ko hakoreshwa primer iteza imbere, cyangwa "tiecoat." Van Technologies yakoze ubushakashatsi niterambere ryinshi muguhuza ibishishwa bya UV bishobora gukira kuri ubu bwoko bwibiti. Iterambere ryagezweho ririmo kashe imwe ya UV-ishobora gukingirwa ibuza amavuta, sap na pisine kutabangamira UV-ishobora gukira hejuru yamakoti.

Ubundi, amavuta aboneka hejuru yinkwi arashobora gukurwaho mbere yimyenda yo guhanagura ahanagura acetone cyangwa undi muti ukwiye. Umwenda wubusa, winjiza ubanza guhanagurwa nigishishwa hanyuma ugahanagurwa hejuru yinkwi. Ubuso bwemewe gukama hanyuma igishishwa cya UV gishobora gukira. Kurandura amavuta yo hejuru hamwe nibindi byanduza biteza imbere gukurikiraho gutwikiriye hejuru yinkwi.

3. Ni ubuhe bwoko bw'irangi bujyanye na UV?

Ikirangantego icyo aricyo cyose cyasobanuwe hano kirashobora gufungwa neza no gushyirwaho hejuru hamwe na 100% UV-ishobora gukira, kugabanuka-kugabanuka UV-gukira, amazi-UV-ikiza, cyangwa UV-ishobora kuvura ifu. Kubwibyo, hariho umubare wibintu bifatika bifatika bikora ikintu cyose ku isoko gikwiranye na UV-ishobora gukira. Hariho, ariko, ibitekerezo bimwe bigaragara kugirango tumenye neza ko guhuza bibaho kurwego rwo hejuru rwibiti birangiye.

Ikirangantego cyamazi hamwe namazi-UV-Ikiza:Iyo ushyizeho 100% UV-ishobora gukira, igabanuka-UV-ishobora gukira cyangwa UV-ishobora kuvura ifu ya kashe / topcoats hejuru y’amazi y’amazi, ni ngombwa ko ikizinga cyumye rwose kugirango wirinde inenge ziterwa nuburinganire, harimo ibishishwa bya orange, uburobyi, uburobyi. , guhuriza hamwe. Inenge nkiyi ibaho bitewe nubushyuhe buke bwubuso bwakoreshejwe ugereranije nubushyuhe bwo hejuru bwamazi asigaye kuva kumurongo washyizweho.

Gukoresha amazi-UV-ashobora gukira, ariko, mubisanzwe birababarira. Ikirangantego cyakoreshejwe kirashobora kwerekana ububobere nta ngaruka mbi mugihe ukoresheje amazi-UV-ashobora gukira kashe / topcoats. Ubushuhe busigaye cyangwa amazi ava mubisiga irangi bizakwirakwira byoroshye binyuze mumazi yakoreshejwe-UV kashe / topcoat mugihe cyo kumisha. Birasabwa cyane, ariko, kugerageza ikizinga icyo aricyo cyose hamwe na kashe / topcoat ikomatanya kubigereranyo byerekana mbere yo kwiyemeza kurangira.

Amavuta ashingiye hamwe na Solvent-Borne:Nubwo hashobora kubaho sisitemu ishobora gukoreshwa kumavuta yumye adahagije cyangwa ashingiye kumirasire, mubisanzwe birakenewe, kandi birasabwa cyane, kumisha neza ayo mabara mbere yo gushiraho kashe / topcoat. Kwumisha buhoro buhoro ubwoko bwubwoko bushobora gusaba amasaha agera kuri 24 kugeza 48 (cyangwa arenga) kugirango ugere kuma. Na none, kugerageza sisitemu hejuru yinkwi zihagarariye birasabwa.

100% UV-Ikiza:Muri rusange, 100% ya UV-ishobora gukira yerekana imiti myinshi n’amazi iyo ikize neza. Iyi myigaragambyo ituma bigorana nyuma yo gukurikiza neza keretse keretse hejuru ya UV yakize neza kugirango yemererwe guhuza imashini. Nubwo 100% UV-ishobora gukira yashizweho kugirango yemererwe kwakirwa nyuma yatanzwe, ibyinshi 100% UV-ishobora gukira bigomba gukurwaho cyangwa gukira igice (byitwa "B" icyiciro cyangwa gukira) kugirango biteze imbere guhuza amakoti. Gutegura "B" ibisubizo mubisigisigi bya reaction bisigaye murwego rwibara rizafatanya hamwe na co-UV ishobora gukira kuko ikozwe neza. Gutegura “B” binemerera gukuramo byoroheje kwanga cyangwa kugabanya ingano zose zishobora guterwa no gukoreshwa. Ikidodo cyoroshye cyangwa ikoti ryoroshye bizavamo hamwe na kote nziza.

Indi mpungenge hamwe na 100% UV-ishobora gukira yerekeranye namabara yijimye. Ikirangantego cyinshi cyane (hamwe nigitambaro cya pigment muri rusange) gikora neza mugihe ukoresheje amatara ya UV atanga ingufu hafi yumucyo ugaragara. Amatara asanzwe ya UV yometse kuri gallium hamwe n'amatara asanzwe ya mercure ni amahitamo meza. Amatara ya UV LED asohora 395 nm na / cyangwa 405 nm akora neza hamwe na sisitemu ya pigment ugereranije na 365 nm na 385 nm. Byongeye kandi, sisitemu ya UV itanga imbaraga za UV nini (mW / cm²) n'ubucucike bw'ingufu (mJ / cm²) guteza imbere gukira neza ukoresheje irangi ryakoreshejwe cyangwa pigmenting coating layer.

Ubwanyuma, kimwe nubundi buryo bwa sisitemu yavuzwe haruguru, kugerageza birasabwa mbere yo gukorana nubuso nyabwo kugirango bisizwe kandi birangire. Witondere mbere yo gukira!

4.Ni ubuhe buryo ntarengwa / buke bwa firime yubaka 100% ya UV?

Ifu ya UV ishobora gukira muburyo bwa tekiniki ni 100% ya UV-ishobora gukira, kandi ubunini bwayo bukoreshwa bugarukira ku mbaraga za electrostatike zo gukurura zihuza ifu hejuru yuzuye. Nibyiza gushaka inama zuwakoze UV ​​ifu yububiko.

Kubijyanye n'amazi 100% UV-ishobora gukira, uburebure bwa firime itose bizavamo uburebure bwa firime yumye nyuma yo gukira UV. Kugabanuka bimwe byanze bikunze ariko mubisanzwe ni ingaruka nkeya. Hariho, ariko, tekinoroji ya tekinike yerekana cyane kwihanganira firime yoroheje cyangwa ifunganye. Muri ibi bihe, gupima firime yakize irashobora gukorwa kugirango ihuze neza nubushyuhe bwa firime.

Umubyimba wanyuma wakize ushobora kugerwaho bizaterwa na chimie ya UV-ishobora gukira hamwe nuburyo ikorwa. Hariho sisitemu ziboneka zashizweho kugirango zitange firime zoroshye cyane hagati ya 0.2 mil - 0.5 mil (5µ - 15µ) nizindi zishobora gutanga umubyimba urenze santimetero 0,5 (12 mm). Mubisanzwe, UV-yakize ibifuniko bifite ubucucike buri hejuru, nka urethane acrylate zimwe na zimwe, ntibishobora kuba binini bya firime murwego rumwe rukoreshwa. Urwego rwo kugabanuka nyuma yo gukira ruzatera gucikamo gukabije kwifuniko ryinshi. Ubwubatsi burebure cyangwa kurangiza uburebure buracyashobora kugerwaho ukoresheje UV-ishobora gukira yububiko bwimbitse ihuza umurongo ukoresheje ibice byinshi byoroheje kandi haba umusenyi na / cyangwa “B” kubika hagati ya buri cyiciro kugirango uteze imbere amakoti.

Uburyo bukiza bwo gukiza bwa UV-bushobora gukira bwitwa "radical radical yatangijwe." Ubu buryo bwo gukiza bushobora kwanduzwa na ogisijeni mu kirere itinda cyangwa ikabuza umuvuduko wo gukira. Uku gutinda akenshi kwitwa kubuza ogisijeni kandi ni ngombwa cyane mugihe ugerageza kugera kubyimbye bya firime. Muri firime yoroheje, ubuso bwubuso bwubunini bwuzuye bwo gutwikiraho ni hejuru cyane ugereranije nubunini bwa firime. Kubwibyo, ubunini bwa firime yoroheje birashoboka cyane kubuza ogisijeni no gukira buhoro buhoro. Akenshi, ubuso bwo kurangiza buguma bukize bidahagije kandi bugaragaza amavuta / amavuta. Kurwanya ogisijeni yabujijwe, imyuka ya inert nka azote na dioxyde de carbone irashobora kunyuzwa hejuru mugihe cyo gukira kugirango ikureho umwuka wa ogisijeni, bityo bikemure gukira vuba, vuba.

5.Ni ubuhe buryo busobanutse neza bwa UV?

100% UV-ishobora gukira irashobora kwerekana neza kandi izahangana namakoti meza asobanutse muruganda. Byongeye kandi, iyo ushyizwe mubiti, bizana ubwiza nuburebure bwishusho. Mubyifuzo byumwihariko ni sisitemu zitandukanye za alifatique urethane acrylate igaragara neza kandi idafite ibara iyo ikoreshejwe ahantu hatandukanye, harimo nibiti. Byongeye kandi, alifatique polyurethane acrylate yifata neza kandi irwanya ibara ryimyaka. Ni ngombwa kwerekana ko ibishishwa bito-bitwikiriye urumuri cyane kuruta ibishishwa kandi bizasobanuka neza. Ugereranije nindi miti ya chemisties, ariko, 100% UV-ishobora gukira iringaniye niba itari hejuru.

Amazi yo mu mazi-UV ashobora gukira aboneka muriki gihe arashobora gutegurwa kugirango atange ibisobanuro bidasanzwe, ubushyuhe bwibiti hamwe nigisubizo cyo guhangana na sisitemu nziza isanzwe yo kurangiza. Kugaragara, kurabagirana, gusubiza ibiti nibindi bintu bikora bya UV-ishobora gukira iboneka ku isoko uyumunsi nibyiza iyo biva mubakora ubuziranenge.

6. Haba hari ibara rya UV cyangwa rishobora gukingirwa?

Nibyo, ibara ryamabara cyangwa pigment iraboneka byoroshye muburyo bwose bwa UV-ishobora gukira ariko hariho ibintu byo gutekereza kubisubizo byiza. Ikintu cya mbere kandi cyingenzi ni uko amabara amwe abangamira ubushobozi bwingufu za UV zohereza, cyangwa kwinjira, zikoreshwa UV-zishobora gukira. Ikirangantego cya electromagnetiki cyerekanwe mubishusho 1, kandi birashobora kugaragara ko urumuri rugaragara ruhita rwegeranye na UV. Ikirangantego ni ugukomeza nta murongo usobanutse (uburebure bwumurongo) wo gutandukanya. Kubwibyo, akarere kamwe gahinduka gahoro gahoro mukarere kegeranye. Urebye akarere kagaragara k'urumuri, hari ubumenyi bwa siyansi buvuga ko buva kuri 400 nm kugeza kuri 780 nm, mu gihe ibindi bivuga ko buva kuri 350 nm kugeza kuri 800 nm. Kuri iki kiganiro, ni ngombwa ko tumenya ko amabara amwe ashobora guhagarika neza ihererekanyabubasha ryumurambararo wa UV cyangwa imirasire.

Kubera ko intumbero yibanze kuri UV yumurongo cyangwa imirasire, reka dusuzume ako karere muburyo burambuye. Igishushanyo cya 2 cyerekana isano iri hagati yumuraba wumucyo ugaragara nibara rihuye ningirakamaro muguhagarika. Ni ngombwa kandi kumenya ko amabara asanzwe afite uburebure bwumurambararo kuburyo ibara ritukura rishobora kumara intera nini kuburyo rishobora kwinjiza igice mukarere ka UVA. Kubwibyo, amabara yibibazo byingenzi azenguruka umuhondo - orange - urwego rutukura kandi ayo mabara arashobora kubangamira gukira neza.

Ntabwo amabara abangamira gukira UV gusa, biranasuzumwa mugihe ukoresheje ibishishwa byera byera, nka UV-ikiza primers hamwe namabara yo hejuru. Reba uburyo bwo kwinjiza ibintu bya pigment yera ya titanium yera (TiO2), nkuko bigaragara ku gishushanyo cya 3. TiO2 yerekana kwinjirira cyane mu karere ka UV kandi nyamara, imyenda yera, UV ishobora gukira neza. Nigute? Igisubizo kibaho muburyo bwitondewe nuwatezimbere hamwe nuwabikoze afatanije no gukoresha amatara ya UV akwiye kugirango akire. Amatara asanzwe, asanzwe ya UV mukoresha asohora ingufu nkuko bigaragara mumashusho 4.

Buri tara ryerekanwe rishingiye kuri mercure, ariko mugukata mercure hamwe nikindi kintu cyuma, imyuka irashobora kwimukira mu tundi turere tw’uburebure. Kubijyanye na TiO2 ishingiye, yera, UV-ishobora gukira, ingufu zitangwa n itara risanzwe rya mercure rizahagarikwa neza. Bimwe muburebure bwo hejuru bwatanzwe birashobora gutanga umuti ariko uburebure bwigihe gisabwa kugirango ukire byuzuye ntibishobora kuba ingirakamaro. Mugukuraho itara rya mercure hamwe na gallium, ariko, hari imbaraga nyinshi zingirakamaro mukarere katabujijwe neza na TiO2. Gukoresha ikomatanya ryubwoko bwamatara yombi, haba mugukiza (ukoresheje gallium doped) hamwe no gukiza hejuru (ukoresheje mercure isanzwe) birashobora kugerwaho (Ishusho 5).

Ubwanyuma, ibara ryamabara cyangwa pigment ya UV-ishobora gukosorwa igomba gutegurwa hifashishijwe uburyo bwiza bwo gufotora kugirango ingufu za UV - intera yumucyo ugaragara itangwa n'amatara - ikoreshwa neza kugirango ikire neza.

Ibindi bibazo?

Kubijyanye nibibazo byose bivuka, ntuzigere ushidikanya kubaza isosiyete ikora cyangwa izaza itanga ibicuruzwa, ibikoresho hamwe na sisitemu yo kugenzura ibikorwa. Ibisubizo byiza birahari kugirango bifashe gufata ibyemezo bifatika, umutekano kandi byunguka. u

Lawrence (Larry) Van Iseghem ni perezida / umuyobozi mukuru wa Van Technologies, Inc. ibikoresho ku isi hose. UV-ishobora gukira yamye yibanze yibanze, hamwe nubundi buryo bwa tekinoroji ya "Icyatsi", hibandwa kubikorwa bingana cyangwa birenze ikoranabuhanga risanzwe. Van Technologies ikora GreenLight Coatings ™ ikirango cyo gutwikira inganda ukurikije sisitemu yemewe yo gucunga ubuziranenge ISO-9001: 2015. Kubindi bisobanuro, surawww.icyatsi kibisi.com.