I-Epoxy UV yokunyanga i-resin isetyenziswa ngokubanzi kwimimandla yokufakelwa kombane, i-anti-corrosion coating, i-metal bonding, njalo njalo ngenxa yamandla ayo aphezulu okudibanisa, umphezulu wokudibanisa okubanzi, ukuncipha okuphantsi, ukuzinza okulungileyo, ukugquma kombane okugqwesileyo, amandla aphezulu omatshini kunye ukuqhubekeka kakuhle.Kwiminyaka yakutshanje, i-epoxy UV yokunyanga iresin njengeshishini lichumile.
Nangona kunjalo, okwangoku, ukuxhathisa kwemozulu kwiimveliso ezininzi ze-epoxy zibuthathaka, ngakumbi kwimveliso ye-epoxy adhesive, i-LED yokuncamathelisa i-potting, i-epoxy UV ephilisa i-resin yokuncamathela yobucwebe, njl., iimfuno zombala wemveliso zingqongqo, ezibeka phambili phezulu. iimfuno zentsebenzo echasene ne-yellowing yenkqubo ye-epoxy.
Kukho izinto ezininzi ezibangela ukutyheli kweemveliso ze-epoxy: 1. I-bisphenol isakhiwo se-epoxy epholileyo ye-UV yokuphilisa i-resin kulula ukuyikhupha ukuvelisa i-carbonyl ukwenza iqela elityheli;2. Inxalenye ye-amine yasimahla kwi-amine yokunyanga i-polymerized ngokuthe ngqo nge-epoxy UV yokunyanga intlaka, okukhokelela ekunyukeni kobushushu bendawo kunye nokukhawuleza ukutyheli;3. I-tertiary amine accelerators kunye ne-nonylphenol accelerators kulula ukutshintsha umbala phantsi kwe-oksijeni eshushu kunye ne-UV irradiation;4. Ukuba iqondo lokushisa liphezulu kakhulu ngexesha lokuphendula, ukungcola okushiyekileyo kunye ne-catalysts yetsimbi kwisistim kuya kubangela ukuphuzi.
Isisombululo esisebenzayo kukongeza i-antioxidant kunye ne-ultraviolet absorber, enokuthintela ngokufanelekileyo kunye nokulibazisa i-yellowing.Nangona kunjalo, zininzi iintlobo ze-antioxidants, kwaye ukukhetha iimveliso ezifanelekileyo kufuna inkxaso ethile yobugcisa kunye namava okuqokelela.
Ukuhlelwa kwe-antioxidants: enye yeyona nto i-antioxidant ephambili: bamba i-peroxide yamahhala, ithintele kakhulu i-phenol antioxidants;Enye yi-antioxidant encedisayo: ukubola kweehydroperoxides, ikakhulu i-phosphite esters kunye ne-thioesters.Ngokubanzi, i-antioxidants eyahlukeneyo iyacetyiswa ngokwenkqubo yokuvelisa, izinto eziluhlaza, izinyibilikisi, izongezo kunye nezihluzi zabavelisi abahlukeneyo, yeyiphi inqanaba lokutyheli kunye nenqanaba lokutyheli.
Ukukhanya kwe-Ultraviolet kukwangunobangela obalulekileyo obangela i-oxidation tyheli yenkqubo ye-epoxy, ngakumbi kukukhanya kwelanga.Ngoko ke, ngakumbi kubathengi abaneemveliso zabo kufuneka zisetyenziswe ngaphandle, siya kuncoma ukongeza inani elithile le-Absorbent ye-UV kwiimveliso, ezinokuthatha ngokufanelekileyo i-UV kunye nokulibazisa ukutyheli.Ngaphezu koko, ukusetyenziswa kwe-ultraviolet kunye ne-antioxidant kunokudlala i-synergistic effect, kunye nefuthe lokuba i-1 kunye ne-1 inkulu kune-2.
Kakade ke, ukusetyenziswa kwe-antioxidants kunye ne-absorber ultraviolet ayikwazi ukusombulula ingxaki ye-yellowing, kodwa phakathi koluhlu oluthile kunye nexesha, inokuthintela ngokufanelekileyo i-oxidation ye-yellowing yeemveliso, ukugcina umbala wamanzi weemveliso ekuhleni kwaye uphucule umgangatho weemveliso. .
Ixesha lokuposa: May-09-2022