Epoxy UV kuchiritsa utomoni chimagwiritsidwa ntchito m'minda ya kutchinjiriza magetsi kuponyera, odana ndi dzimbiri ❖ kuyanika, zitsulo kulumikiza zitsulo ndi zina zotero chifukwa cha mphamvu yake yomangirira, lonse kugwirizana pamwamba, otsika shrinkage, bata wabwino, kutchinjiriza kwambiri magetsi, mkulu mphamvu makina ndi bwino processability.M'zaka zaposachedwa, epoxy UV kuchiritsa utomoni monga makampani yapita patsogolo.
Komabe, pakali pano, kukana nyengo ya mankhwala ambiri epoxy ndi ofooka, makamaka kupanga zomatira epoxy, anatsogolera potting zomatira, epoxy UV kuchiritsa utomoni zomatira zodzikongoletsera, etc., zofunika mtundu mankhwala ndi okhwima, amenenso amaika patsogolo apamwamba. Zofunikira pakuchita kwa anti yellowing kwa dongosolo la epoxy.
Pali zinthu zambiri zomwe zimayambitsa chikasu cha mankhwala a epoxy: 1. Bisphenol kapangidwe kameneka kamene kamakhala ndi epoxy UV kuchiritsa utomoni n'kosavuta kuti oxidize kupanga carbonyl kupanga chikasu gulu;2. Chigawo cha amine chaulere mu mankhwala ochiritsira amine chimapangidwa ndi polymerized ndi epoxy UV kuchiritsa utomoni, zomwe zimapangitsa kutentha kwapafupiko kukwera ndi kufulumira kwachikasu;3. Othandizira apamwamba a amine ndi ma accelerator a nonylphenol ndi osavuta kusintha mtundu pansi pa mpweya wotentha ndi kuwala kwa UV;4. Ngati kutentha kuli kokwera kwambiri panthawiyi, zotsalira zotsalira ndi zopangira zitsulo m'dongosolo zingapangitse chikasu.
Njira yothetsera vutoli ndikuwonjezera antioxidant ndi ultraviolet absorber, yomwe ingateteze bwino ndikuchedwetsa chikasu.Komabe, pali mitundu yambiri ya ma antioxidants, ndipo kusankha zinthu zoyenera kumafuna chithandizo chaukadaulo komanso kudzikundikira chidziwitso.
Gulu la antioxidants: imodzi ndiyo antioxidant yayikulu: gwirani ma peroxide aulere, omwe amalepheretsa ma phenol antioxidants;Imodzi ndi antioxidant yothandiza: kuwola ma hydroperoxides, makamaka phosphite esters ndi thioesters.Nthawi zambiri, ma antioxidants osiyanasiyana amalimbikitsidwa molingana ndi kupanga, zopangira, zosungunulira, zowonjezera ndi zodzaza za opanga osiyanasiyana, omwe siteji ya chikasu ndi kuchuluka kwa chikasu.
Kuwala kwa Ultraviolet ndikomwe kumapangitsa kuti ma epoxy system akhale achikasu, makamaka ndi kuwala kwa dzuwa.Chifukwa chake, makamaka kwa makasitomala omwe zinthu zawo zimayenera kugwiritsidwa ntchito panja, timalimbikitsa kuwonjezera kuchuluka kwa zotsekemera za UV kuzinthu zomwe zimatha kuyamwa UV ndikuchedwetsa chikasu.Kuphatikiza apo, kugwiritsa ntchito ma ultraviolet ndi antioxidant kumatha kupangitsa kuti 1 kuphatikiza 1 ikhale yayikulu kuposa 2.
Kumene, ntchito antioxidants ndi ultraviolet absorbers sangathe kwenikweni kuthetsa vuto la chikasu, koma mkati osiyanasiyana osiyanasiyana ndi nthawi, angathe kuteteza makutidwe ndi okosijeni chikasu cha mankhwala, kusunga mtundu madzi wa mankhwala mandala ndi kusintha kalasi ya mankhwala. .
Nthawi yotumiza: May-09-2022