Polycarbonate profiles, with their excellent light transmittance and impact resistance, have become an ideal material for components such as LED lamp housings and lenses. However, in LED application scenarios, technical issues such as insufficient light transmittance and poor weather resistance often arise, requiring targeted solutions.
Technical Q&A 1: How to improve the light transmittance of polycarbonate profiles to meet LED luminous efficacy requirements? Solutions: Select high light transmittance grade polycarbonate raw materials, which can achieve a light transmittance of over 89%; optimize the profile molding process to avoid light scattering caused by internal stress, which can be reduced through slow cooling and annealing treatment; perform high-precision polishing on the mold surface to ensure the profile surface is smooth and reduce light reflection loss.
Technical Q&A 2: When LED lamps are used outdoors for a long time, polycarbonate profiles are prone to yellowing and aging. What should be done? Solutions: Add UV-resistant additives and antioxidants to the raw materials to improve the weather resistance of the profiles and slow down the aging rate; adopt co-extrusion process to form a protective layer with better weather resistance on the surface of the profiles; conduct regular maintenance on LED lamps to avoid dust accumulation on the profile surface, which affects heat dissipation and light transmission, thereby indirectly extending the service life.
