# thermally conductive plastic, thermally conductive plastic raw material, thermally conductive plastic pellets, thermally conductive plastics supplier | RenJie Plastics > Source: https://www.rjplastics.com/en/article/thermally-conductive-plastic-pellets-why ## Knowledge of Thermally Conductive Plastics [Home](/en/)›[Support](/en/support/thermally-knowledge)›[Knowledge of Thermally Conductive Plastics](/en/support/thermally-knowledge)›**Why are thermally conductive plastics supplied as pellets?** Support - Knowledge of Thermally Conductive Plastics - Knowledge of Conductive Plastics - Knowledge of Modified Plastics Need help choosing? [Get a quote](/en/contact) ## Why are thermally conductive plastics supplied as pellets? ** #### Why Are Thermally Conductive Plastic Raw Materials Mostly Pellets? "Why are thermally conductive plastics supplied as pellets?" It is one of the questions RenJie® is asked most often. It looks like a question about shape, but pellet form directly affects how evenly a compound is mixed, whether a production line can run continuously, and how long raw material can be stored. This article explains the reasons from three angles - use, production and logistics - and summarises the key performance data of thermally conductive plastics at the end. 1. Easier to Use: Pellets Heat and Plasticise More Uniformly In processing, pellet-form thermally conductive plastic lets the material heat uniformly and plasticise more evenly, which makes it easier to blend with other additives afterwards and produces flatter, more consistent parts. Powder, by contrast, is more prone to uneven heating and uneven mixing. 2. Easier to Produce: A Continuous Reactor-to-Screw-Extruder Route Naturally Yields Pellets Material enters the screw as pellets, is melted and plasticised, and is then extruded into shape. In other words, pellets are raw material that has already been pre-processed. Polymer material leaves the reactor, is homogenised by stirring and has its solvent removed; that line is often connected directly to a screw extruder, which extrudes strands that are cooled and then cut into pellets by a centrifugal cutter. Pellet form is therefore not an arbitrary packaging choice - it is what the end of the production chain naturally produces, and it dovetails with the melting-and-plasticising logic of downstream injection moulding. 3. Easier to Ship: Pellets Are More Stable Than Powder Pellets are easy to ship - fill a large bag, load it, and send it on its way. Powder is a different story: many materials are hygroscopic, and powder has a large surface area, so it more readily cakes and degrades, which is bad for processing itself. 4. What Are Thermally Conductive Plastics? Thermally conductive plastics were developed for ordinary exterior mechanical parts. They combine excellent heat-conduction performance with roughly 50% less weight than typical aluminium parts. Key Performance Data | Property | Value | | --- | --- | | Thermal conductivity | 0.8 - 5.0 W/m·K | | Heat-conduction performance | Excellent | | Flame rating | UL94 V-0 | | Weight | Approx. 50% lighter than typical aluminium parts | | Forming | Easy to form in injection moulds | | Throughput | Higher than typical aluminium die casting | | Exterior mechanical design | Greater flexibility and space | Thermally Conductive Plastics vs Aluminium Parts Against typical aluminium parts, the value of thermally conductive plastics sits in three places: weight, at roughly 50% lighter; throughput, since they form easily in injection moulds and out-produce typical aluminium die casting; and design freedom, with greater flexibility and space in exterior mechanical design. 5. FAQ Why are thermally conductive plastic raw materials supplied as pellets rather than powder? For three reasons: easier use - more uniform heating and plasticising, easier blending with additives and flatter parts; easier production - pellets are pre-processed material that can go straight into the screw to be melted, plasticised and extruded; and easier shipping - hygroscopic powder has a large surface area and more readily cakes and degrades, which is bad for processing. What is the thermal conductivity of thermally conductive plastics? A good range is 0.8 - 5.0 W/m·K. Can thermally conductive plastics replace aluminium heat-dissipation parts? For ordinary exterior mechanical parts, yes: they combine excellent heat-conduction performance with roughly 50% less weight than typical aluminium parts, form easily in injection moulds and offer higher throughput than typical aluminium die casting. What flame rating do thermally conductive plastics achieve? UL94 V-0. Which processing methods suit thermally conductive plastic pellets? Pellets enter the screw from the feed port, are melted and plasticised, then extruded into shape - the standard route for thermoplastic materials. Conclusion: Pellet Form Is a Prerequisite for Stable Mass Production Pellet form is not an arbitrary choice; it is what three stages all point to. Use needs uniform heating and plasticising. Production needs a pre-processed feedstock that links continuously. Logistics needs a material that will not absorb moisture and cake. RenJie® thermally conductive plastics cover 0.8 - 5.0 W/m·K thermal conductivity, reach UL94 V-0 flame rating and form easily in injection moulds - giving exterior mechanical parts a solution that conducts heat while cutting weight. About RenJie® RenJie® supplies thermally conductive plastic raw materials in pellet form. For grade selection, samples or technical discussion, contact the RenJie® team. ### Question not answered here? 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