1、The UV aging resistance of strong and ductile epoxy resin achieved by
Herein, 9-anthracene methanol glycidyl ether (AER) is synthesized and used as epoxy resin modifier, which can effectively improve its UV aging resistance.
2、Effect of Ultraviolet Aging on Properties of Epoxy Resin and Its
In this study, the effects of UV aging on the properties of epoxy resin and composites were investigated through artificially accelerated aging experiments. The conclusions were as follows:
3、Study on the UV aging resistance of ZnO
This study investigates the impact of zinc oxide nanoparticles on epoxy resin systems and the ultraviolet (UV) aging resistance of modified epoxy resin composites using molecular dynamics (MD) simulations and experimental methods.
Enhanced ultraviolet aging resistance of epoxy resins
Fluorinated graphene oxide@CeO (FGO@CeO) was synthesized using an in-situ growth method and incorporated as a filler into epoxy resins to improve their UV aging resistance. On UV irradiation, it facilitated the surface enrichment of the modified epoxy resin (MEP), forming a UV-blocking layer.
Enhanced ultraviolet aging resistance of epoxy resins through surface
FGA@CeO 2 was incorporated into epoxy resins to improve UV aging resistance. FGA@CeO 2 was enriched under UV, forming a surface UV-blocking layer. FGA@CeO 2 expanded UV absorption band and enhanced absorption intensity. Epoxy with FGA@CeO 2 had a more significant photothermal temperature rise.
Effect of Ultraviolet Aging on Properties of Epoxy Resin and Its
Polymer matrix composites (PMCs) often undergo aging as a result of ultraviolet (UV) radiation, which significantly impacts their performance and durability. This paper investigated the alterations in the microstructure and macroscopic properties of ...
Enhanced ultra violet resistance of epoxy
The ultra violet (UV) resistance of epoxy resins has been paid more and more attention, and the development of highly efficient UV resistant materials is critical.
Study on the UV aging resistance of ZnO ‐modified epoxy resin by
This study investigates the impact of zinc oxide nanoparticles on epoxy resin systems and the ultraviolet (UV) aging resistance of modified epoxy resin composites using molecular...
Effect of Ultraviolet Aging on Properties of Epoxy Resin and Its
This paper investigated the alterations in the microstructure and macroscopic properties of epoxy resin and its composite used in overhead wires during UV aging.
Laboratory evaluation of UV aging and salt erosion resistance of
Developing epoxy resin modified with ternary nanoparticles for HFST in harsh environment. The hydrophobicity of modified epoxy resin increases by 61 %, with 52 % less strength loss from UV aging. The incorporation of NS-NT-NZ prevents the reduction in bonding strength.
Abstract: Epoxy resin is widely used in electronic packaging, coatings, composites, and other fields due to its excellent mechanical properties, electrical insulation, and chemical stability. its sensitivity to light limits its outdoor applications. Ultraviolet (UV) aging is a major factor affecting the performance of epoxy resin, making modifications to enhance its UV resistance critical. This paper introduces the impact of UV aging on epoxy resin and explores modification techniques to improve its durability under UV exposure.
1. Impact of UV Aging on Epoxy Resin Ultraviolet (UV) radiation, an energetic electromagnetic wave, can break conjugated molecular structures, leading to photodegradation and performance declines in polymeric materials. For epoxy resin, UV aging manifests in several ways:
- Photochromism: UV exposure causes color changes or reduced transparency due to reactions involving double bonds and cyclic structures.
- Photooxidation: UV-induced free radicals trigger oxidative reactions, resulting in surface cracking, chalking, or powdering.
- Photodegradation: Macromolecular chain cleavage weakens the material’s mechanical properties.
- Photocrosslinking: UV promotes crosslinking of epoxy groups, increasing brittleness and reducing flexibility.
2. Methods for UV Aging Modification To enhance UV resistance, the following modification strategies are employed:
- Antioxidants: Adding hindered phenol compounds (e.g., BHT) or thioesters (e.g., TBA) suppresses free radical generation and slows photooxidation.
- Light Stabilizers: Incorporating hindered amine light stabilizers (HALS) or benzophenone derivatives (BCPs) absorbs UV radiation and prevents radical formation.
- Formulation Adjustments: Optimizing resin formulations (e.g., increasing antioxidant content, using low-volatility diluents) reduces UV susceptibility.
- Surface Treatments: Applying UV-resistant coatings or plating creates barriers against UV penetration.
3. Practical Applications In outdoor electronics, UV-modified epoxy resins significantly extend service life. For instance, a company developed an epoxy encapsulant containing HALS, achieving a 40%+ improvement in UV resistance after accelerated weathering tests. Studies also show that surface treatments like UV-blocking coatings further enhance durability.
The impact of UV aging on epoxy resin cannot be ignored. By integrating antioxidants, light stabilizers, formulation optimization, and surface treatments, UV resistance can be effectively improved. These modifications not only prolong material lifespan but also enable reliable outdoor applications for electronics. Future advancements in materials science will drive more efficient and diverse UV-resistant solutions for epoxy resins.
