Pane zvinhu zvakawanda zvinokanganisa kurapwa uye kuomeswa kweWaterborne UV machira kana uchishandisa UV yekurapa muchina.Iri bepa rinongotaura zvinhu zvikuru.Zvinhu izvi zvinosanganisira zvinotevera:
1. Mhedzisiro ye pre drying ye aqueous system pa UV kurapa
Mamiriro ekuomeswa asati apora ane simba guru pakukurumidza kupora.Kana isina kuoma kana kuti isina kukwana, kukurumidza kuporesa kunononoka, uye gelation rate haina kuwedzera zvakanyanya nekuwedzera kwekutsvaga nguva.Izvi zvinodaro nekuda kwekuwedzeredza kurongedza.Kunyange zvazvo mvura ine imwe mhedzisiro yekudzivisa polymerization yeokisijeni, inogona kungoita kuti pamusoro peingi firimu igadzikane nekukurumidza, chete kuti iwane kuomeswa kwepamusoro, asi kwete kuwana kuoma kwakasimba.Sezvo sisitimu yacho iine huwandu hwakakura hwemvura, sisitimu iri pasi pezviyero uye chitupa kana ichirapa pane imwe tembiricha.Nekukurumidza kubuda kwemvura pamusoro pefirimu yeinki, pamusoro pefirimu yeinki inosimbisa nokukurumidza, uye mvura iri mufirimu yakaoma kupukunyuka.Mvura yakawanda inoramba iri mufirimu yeinki, kudzivirira kuwedzera kusimbiswa uye kuratidzwa kwefirimu yeinki uye kuderedza kukurumidza kuporesa.Uye zvakare, iyo ambient tembiricha panguva yeUV irradiation ine simba guru pakurapa kweUV majasi.Iyo yakakwirira tembiricha, zviri nani kurapa midziyo.Naizvozvo, kana preheating ikaiswa, iyo yekurapa pfuma yejasi ichawedzerwa uye kunamatira kuchava nani.
2. Mhedzisiro yephotoinitiator paWaterborne UV kurapa
Iyo photoinitiator inofanirwa kuve nekumwe miscibility nemvura-based UV yekurapa system uye yakaderera mvura vapor volatility, kuitira kuti iyo photoinitiator inogona kuparadzirwa, izvo zvinobatsira kune inogutsa kurapa maitiro.Kana zvisina kudaro, panguva yekuomeswa, iyo photoinitiator inoputika nemhepo yemvura, ichideredza kushanda kwekutanga.Akasiyana mafotoinitiators ekurongedza fodya ane akasiyana absorption wavelengths.Kushandiswa kwavo kwakabatanidzwa kunogona kunyatsotora ultraviolet mwaranzi yewavelengths akasiyana, kunatsiridza kunyura kwemwaranzi yeultraviolet, uye nekumhanyisa zvakanyanya kurapa kweingi firimu.Naizvozvo, iyo inki firimu ine nekukurumidza kupora chiyero uye kuita kwakanakisa kunogona kuwanikwa nekushandisa akasiyana mafotoinitiators uye kugadzirisa chiyero cheakasiyana mafotoinitiators.Izvo zviri mukati memubatanidzwa photoinitiator muhurongwa zvinofanirwa kuvandudzwa nemazvo, zvakaderera zvakanyanya hazvikodzeri kukwikwidza kwekunyura ne pigment;Chiedza chakawandisa hachikwanise kupinda mujasi zvakanaka.Pakutanga, mwero wekurapa wejasi unowedzera nekuwedzera kweiyo komputa photoinitiator, asi kana iyo compound photoinitiator dose inowedzera kune imwe kukosha, uye yobva yawedzera zvirimo, chiyero chekurapa chinodzikira.
3. Mhedzisiro yeWaterborne UV kurapa resin paUV kurapa
Iyo mvura-yakavakirwa UV inorapika resin inoda yemahara radical mwenje inorapika inochinjika kurongedza, izvo zvinoda kuti mamorekuru eresin anofanirwa kunge aine mapoka asina unsaturated.Pasi pekuvhenekera kwechiedza che ultraviolet, mapoka asina kuvharwa mumamolekoro akabatanidzwa, uye chifukidzo chemvura chinova chifukidzo chakasimba.Kazhinji, nzira yekuunza acryloyl, methacryloyl, vinyl ether kana allyl inogamuchirwa kuita kuti resin yekugadzira ive neunsaturated group certification, kuitira kuti inogona kurapwa pasi pemamiriro akakodzera.Acrylate inowanzoshandiswa nekuda kwekuita kwayo kwakanyanya kuita.Kune iyo yemahara radical UV yekurapa sisitimu, nekuwedzera kweiyo kaviri bond yemukati mumorekuru, iyo crosslinking kumhanya kwefirimu kuchawedzera, uye kukurumidza kurapa kuchawedzera.Uyezve, resin ane zvimiro zvakasiyana ane mhedzisiro dzakasiyana pachiyero chekurapa.Kuita kwekuita kwemapoka akasiyana anoshanda anowanzo kuwedzera mune inotevera kurongeka: vinyl ether
4. Mhedzisiro yepigments paUV kurapwa kweMvura Coatings
Sechinhu chisiri chekutora mifananidzo muWaterborne UV yekurapa machira, pigment inokwikwidza nevanotangisa kutora UV mwenje, iyo inokanganisa zvakanyanya kurapa maitiro eUV yekurapa system.Nekuti iyo pigment inogona kutora chikamu cheiyo radiation simba, inokanganisa kuchengetedza kweiyo photoinitiator yemwenje yekunyudza michina, uye yobva yakanganisa kuwanda kwemahara radicals anogona kugadzirwa, izvo zvinoderedza kukurumidza kuporesa.Imwe neimwe ruvara rwe pigment ine akasiyana absorptivity (transmittance) kune akasiyana wavelengths yechiedza.Iyo idiki yekunyura kwe pigment, iyo yakakura kutapurirana, uye nekukurumidza kukurumidza kuporesa kwejasi.Carbon dema ine yakakwira ultraviolet absorption kugona uye inononoka kurapa.White pigment ine simba rekuratidzira zvinhu, izvo zvinotadzisa kurapa.Kazhinji kutaura, kutorwa kwechiedza che ultraviolet ndeichi: Dema > pepuru > Bhuruu > cyan > Girini > yero > tsvuku.
Chikamu chakasiyana uye kusungirirwa kweiyo pigment kune akasiyana mhedzisiro pakukurumidza kurapa kweingi firimu.Nekuwedzera kwepigment yemukati, mwero wekurapa weingi firimu wakadzikira mumadhigirii akasiyana.Huwandu hweyero pigment hune pesvedzero huru pakurapa kweingi firimu, inoteverwa neruvara rutsvuku uye girinhi pigment.Nekuda kwekuti dema rine mwero wepamusoro wekunyura kwechiedza che ultraviolet, zvichiita kuti kutapurirana kweinki nhema kuve kwakaderera, shanduko yedoseji yayo haina mhedzisiro iri pachena pakurapa kweingi firimu.Kana huwandu hwe pigment hwakakurisa, kupora kwepamusoro peiyo firimu reinki kunokurumidza kupfuura kweplate, asi pigment iri pamusoro pedenga inotora huwandu hukuru hwechiedza che ultraviolet, izvo zvinoderedza kufambiswa kwechiedza che ultraviolet. uye inokanganisa kupora kwemukati wakadzika weingi firimu, zvichiita kuti pave nepamusoro peiyo ingi firimu inorapa asi yepasi pasi isingarapi, iyo iri nyore kubudisa "wrinkle" chiitiko.
Nguva yekutumira: Jul-05-2022