The evolution of LED lighting<\/strong> systems has led to the creation of increasingly powerful and compact devices, capable of replacing traditional sources in industrial, public, and architectural<\/strong> settings. The advantages are evident \u2014 high luminous density, fewer components, and greater optical efficiency \u2014 but thermal management<\/strong> becomes a crucial challenge. Traditionally, heat sinks are made of aluminum<\/strong> or metal alloys, but today thermally conductive compounds for LED<\/strong> offer an innovative and sustainable alternative, combining high thermal performance<\/strong> with lightness and design freedom<\/strong>.<\/p>\n The Romanian company Electromagnetica<\/strong>, specializing in electrical and lighting equipment, has experimented with a cutting-edge solution for the CASTOR 2M industrial projector<\/strong>, equipped with two COB LED modules for a total power of about 70 W<\/strong>.<\/p>\n The objective was to ensure:<\/p>\n The solution was found in LATICONTHER 62 GR\/70<\/strong>, a PA6-based thermally conductive compound<\/strong> loaded with 70% graphite<\/strong>, developed by LATI Industria Termoplastici<\/strong>.<\/p>\n The thermally conductive compound for LED<\/strong> chosen by Electromagnetica ensures an optimal balance between conductivity, resistance, and processability<\/strong>.<\/p>\n Laboratory measurements confirmed a real thermal efficiency up to 10 W\/m\u00b7K<\/strong>, independent of the orientation of graphite flakes, with performance significantly superior to competing compounds.<\/p>\n The success of the CASTOR 2M<\/strong> project required accurate thermal design. This way, it was possible to maintain the LED junction temperature below 80\u00b0C<\/strong>, ensuring a minimum luminous flux of 8000 lumens<\/strong> and extended operational life.<\/p>\n In addition to efficiently dissipating heat, the plastic compound allows for functional integration of components<\/strong>, reducing the number of parts to be assembled and simplifying production.<\/p>\n Besides the technical advantages, the use of a thermally conductive compound for LED<\/strong> allows: <\/p>\n
\nAmong the most widespread technologies, COB (Chip On Board) LEDs<\/strong> stand out, combining multiple diodes on a single substrate to achieve intense and uniform light emission.<\/p>\n
\nLED junction temperatures can reach 150\u00b0C<\/strong>, and overheating significantly reduces the device’s lifespan.<\/p>\nCOB LEDs and Technopolymer Heat Sinks: the Electromagnetica Case<\/h2>\n
\n
\nwithout resorting to metal heat sinks.<\/li>\n<\/ul>\nLATICONTHER 62 GR\/70: Superior Thermal Performance<\/h2>\n
Main Technical Characteristics:<\/h3>\n
\n
Thermal Design and Geometric Optimization<\/h2>\n
\nEngineers optimized:<\/p>\n\n
Comparison of Heat Sink Materials<\/h3>\n
\n\n
\n Property<\/strong><\/td>\n Aluminum<\/strong><\/td>\n Metal alloys<\/strong><\/td>\n LATICONTHER 62 GR\/70<\/strong><\/td>\n<\/tr>\n<\/thead>\n\n \n Thermal conductivity (W\/m\u00b7K)<\/td>\n 237<\/td>\n 150<\/td>\n 10<\/td>\n<\/tr>\n \n Density (g\/cm\u00b3)<\/td>\n 2.7<\/td>\n 3.0<\/td>\n 1.3<\/td>\n<\/tr>\n \n Workability<\/td>\n Machining<\/td>\n Casting or die-casting<\/td>\n Injection molding<\/td>\n<\/tr>\n \n Thermal capacity<\/td>\n Medium<\/td>\n Medium<\/td>\n High<\/td>\n<\/tr>\n \n Relative weight<\/td>\n 100%<\/td>\n 110%<\/td>\n 50%<\/td>\n<\/tr>\n \n Unit cost<\/td>\n Medium<\/td>\n High<\/td>\n Competitive<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n Efficiency and Sustainability<\/h2>\n