Kurapa kweUV kunoreva kurapa kweUV mune radiation yekurapa system (inonzi kurapa kweUV).Radiation kurapa tekinoroji ndiyo nyowani yakasvibira tekinoroji, iyo inoreva maitiro ekukurumidza polymerization uye muchinjika-wekubatanidza kurapa kwemvura chikamu system kuburikidza neultraviolet mwenje, electron beam uye r-ray irradiation.Iine mabhenefiti ekuchengetedza simba, kushanda kwakanyanya, kuita kwakanakisa kupfekedza, kuchengetedza glue, kuchengetedzwa nekuchengetedzwa kwezvakatipoteredza, kupenya kwakanyanya, kureba kwenguva, etc. Matombo echisikigo pachawo ane humwe hurema hwekuzvarwa, semakomba, kuputika, mahwendefa asina kuenzana, nezvimwe. (zvose granite uye marble zviripo).
Maitiro ekugadzira maitiro:
1) Kubata kwakanakisa kwekupotera: UV yekurapa coating ine kuita kwakanakisa, kupenya kwakanyanya, kuomarara kwakanyanya, uye kunaka kwemakemikari kuramba.Kunyatsovandudza kugadzirisa kwehutano hwematombo ematombo.
2) Chengetedzo uye kuchengetedzwa kwezvakatipoteredza: Nekuti iyo UV kurapa kumhanya inokurumidza, kuburitsa kweorganic solvents mumhepo kunoderedzwa kusvika zero, iyo yakachengeteka uye ine hushamwari.
Process musimboti:
UV mabhanhire ndeye UV zvinorapika zvinorapika.Mushure mekunge majasi eUV anorapika avhenekerwa nemwenje weUV, iyo photoinitiator inotanga kutora simba remwaranzi yeUV uye inovhurwa.Maerekitironi ari muchikamu chekunze chemamorekuru ayo anosvetuka uye ogadzira nzvimbo inoshanda munguva pfupi pfupi.Ipapo nzvimbo inoshanda inobata nemapoka asina unsaturated mu resin, zvichiita kuti zvisungo zviviri zviri muchiedza-emitting kuporesa resin uye mamorekuru anoshanda diluent adimburwe, zvichikonzera kuenderera mberi kwepolymerization reaction, kuitira kuyambuka kubatanidza kuita film.Kudzidza kwemakemikari kinetics kunoratidza kuti maitiro eUV anorapa UV majasi ndeyemahara radical cheni polymerization.Kutanga, iyo photoinitiation stage;Yechipiri ndiyo chain growth reaction stage.Muchikamu chino, sezvo kukura kweketani kunoenderera mberi, iyo system ichave yakabatanidzwa uye yakasimbiswa kuita firimu;Iyo Z post chain radicals yakakwana kumisa cheni kuburikidza nekubatanidza kana kusaenzana.
1. Oligomer
Prepolymer, inozivikanwawo se oligomer kana resin, is skeleton yeUV glue.Iyo inonyanya kureva kirasi yemamorekuru mapolymer ane unsaturated kaviri bond chimiro.Iyo inowedzera kuita uye inoumba muchinjika-yakabatana kurapa muviri mushure mekuwedzera, iyo inopa zvinhu zvine zvakakosha zvemuviri uye makemikari zvimiro.Semuyenzaniso, viscosity, tensile simba, shear simba, kuoma uye kutevedzera.
2. Monomer
Monomers, inozivikanwawo sereactive diluents, kazhinji mamorekuru madiki ane imwechete kana anopfuura maviri mabhondi, ayo anonyanya kushandiswa kugadzirisa viscosity yehurongwa uye kutora chikamu mupolymerization, asi zvakare ane mhedzisiro pachiyero chepolymerization uye zvinhu zvenyama.Monomers inogona kukamurwa kuita monofunctional monomers, bifunctional monomers uye multifunctional monomers zvichienderana nedhigirii rekushanda.Monofunctional monomers anobatsira kusimudzira kuchinjika uye kunamatira kwe colloid;Difunctional monomers uye multifunctional monomers haingoite se diluents, asi zvakare kuita semuchinjiko-inobatanidza vamiririri.Vane simba rinokosha pakuoma, kuoma uye simba.
3. Photoinitiators)
Mafotoinitiators anoshanda epakati anogona kutora ultraviolet kana mwenje unooneka uye kuburitsa polymerization yekutanga kugona kuburikidza nekuchinja kwemakemikari.Iwo akakosha zvikamu zveiyo photopolymerization system uye anoita basa rakasimba mukunzwa (kupora chiyero) cheiyo UV yekurapa system.Mafotoinitiators anosanganisira emahara radical photoinitiators uye cationic photoinitiators, ayo anoshandiswa kune emahara radical masisitimu uye cationic masisitimu zvichiteerana.
Nguva yekutumira: Nov-24-2022