Maxay calaamadaha wadooyinka u leexdo jaalaha? Doorka UV & Resin cimilada

Wadada calaamadaynta huruud waxaa ugu horreyn sababaya nabaad-guurka UV iyo resin cimilada, tanaasulka aragtida iyo amniga. Waa tan sida ay ula falgalaan:

1. Burburkii UV
Raajooyinka ultraviolet ee qorraxda (UV) Rays-ga (UV) Rays ayaa jabisay dammaanadaha kiimikada ee lagu calaamadinayo agabka. Calaamadaha themoplastic-ka, soo-gaadhista UV ee Oxidizes Resins (E.G., Resin Petroleum), sameynta chronomors jaalaha ah. Calaamadaha cad ee leh qeybta 'oxide' ee hoose ee 'dioxide'

2. Resin cimilada
Dib-u-dhigga heerkulka heerkulka sare (180-230 ° C), dardargelinta oksidation. Kuleylka inta lagu gudajiro muddada arjiga ama soo-gaadhista qorraxda ee daba dheeraada waxay xawaareysaa xaalufinta dib-u-dejinta, oo horseedda huruud ah.
Beddelka udgoon ee loo yaqaan 'udgoon'
Xalal
Kudar UV gashadda (E.G., Benzotriazole xeryahooda) si loo soo celiyo, xannibay 270-380m uvy-ka UV.
U isticmaal ress-ka-sareeya oo daahir ah iyo tao₂ ku filan (≥18%) si kor loogu qaado iska caabbinta UV.
HOOS KA DHAGEYSO QARSOODKA (180-200 ° C) si looga hortago nabaad-guurka kuleylka.
Adigoo wax ka qabanaya UV iyo deganaanshaha deganaanshaha, calaamadaha wadada waxay hayn karaan midabka iyo waxqabadka.