Kuchita Bwino Kwambiri Kwa zokutira za Ufa za UV

Kuphimba powonjezera wochiritsidwa ndi kuwala kwa ultraviolet (UV powder №) ndi teknoloji yomwe imaphatikiza ubwino wa kupaka ufa wa thermosetting ndi teknoloji yamadzimadzi ya ultraviolet-cure №. Kusiyanitsa ndi zokutira wamba wa ufa ndikuti kusungunula ndi kuchiritsa kumalekanitsidwa m'njira ziwiri zosiyana: pakatenthedwa, tinthu tating'onoting'ono timene timatulutsa ufa timasungunuka ndi kulowa mufilimu yosakanikirana yomwe imadutsana pokhapokha ikayatsidwa ndi kuwala kwa UV. Njira yodziwika kwambiri yolumikizirana yomwe imagwiritsidwa ntchito paukadaulowu ndi njira yaulere: kutsegulira kwa ma photoinitiators mufilimu yosungunuka ndi kuwala kwa UV kumapangitsa kuti pakhale ma free radicals omwe amayambitsa polymerization reaction yomwe imaphatikizapo ma resin double bond.

Mawonekedwe omaliza okutira ndi magwiridwe antchito amatengera kusankha kwa makina a utomoni, ma photoinitiators, pigment, fillers, additives, mikhalidwe yopaka ufa ndi machiritso. Kuthekera kophatikizana kwamapangidwe enieni ndi machiritso kumatha kuyesedwa pogwiritsa ntchito ma photocalorimetry osiyanasiyana.

Kukhathamiritsa kwaposachedwa kwa zokutira za ufa wa UV kwapangitsa kuti pakhale kutuluka kwabwino kwambiri, kupangitsa kuti zomaliza zosalala zitheke pa kutentha kotsika ngati 100 ° C. Zopindulitsa zaukadaulo ndi zachuma zimafotokozera chidwi chomwe chikukula muukadaulo wa ufa wa UV.

Kuphatikiza kwa ma polyester ndi epoxy chemistries opangidwira ufa wa UV amalola kuti zofunikira zamagulu amsika monga matabwa, matabwa, pulasitiki ndi zitsulo zikwaniritsidwe. Ngakhale kuti "mafuta osakanizidwa" ophatikiza poliyesitala ndi ma epoxy resins akhala akudziwika kwa zaka zopitirira 20 mu ufa wa thermosetting, mlingo wa machiritso omwe amaperekedwa pa kutentha kochepa (mwachitsanzo, 120 ° C) amakhala "okwanira" pokhapokha atachiritsidwa nthawi yaitali. Mosiyana ndi izi, mafilimu opaka ufa opangidwa ndi UV amakwaniritsa zofunikira kwambiri pakatha "mphindi zingapo" kutentha ndi kuwala kwa UV.