Winter Mixing: How Cold Materials Change Rubber Processing

Winter mixing can make the same rubber compound behave completely differently. In this episode, I break down how cold polymers, oils, fillers, and mixers change viscosity, torque, mastication, and dispersion — and what to adjust to stay in control. This Episode focuses on one of the most practical rubber processing topics: winter mixing. When polymer starts cold, viscosity rises, mastication slows, torque spikes increase, and filler wetting becomes harder. This is not a formulation problem, it is a rheology and process control issue. In this video, I explain why cold materials change the early mixing cycle, how reduced chain mobility affects compound behavior above Tg, and why staged rotor speed, delayed filler loading, thermally stable oils, dry fillers, and a warm mixer baseline can reduce seasonal variability. If you work with rubber compounding, internal mixing, carbon black, silica, plasticizer oils, or batch consistency, this episode will help you make winter mixing more predictable and manageable. Perfect for: - Engineering students - Materials scientists - Industry professionals - Chemistry enthusiasts - Anyone curious about how everyday materials work NEVER MISS AN EPISODE: - Hit SUBSCRIBE and turn on notifications! @MyRubberHeart ENGAGE WITH US: - Comment below with your questions about rubber modification - Share your experiences with modified rubber materials - Suggest topics for future episodes ❤️ SUPPORT THE SHOW: - Share this video with fellow science enthusiasts - Check out our videos from season 1& 2 #RubberScience #MaterialsEngineering #ChemicalModification #ScienceEducation #Engineering #Chemistry #RubberTechnology #MaterialScience #myrubberheart #IndustryInnovation #STEM #sustainability #WinterMixing #RubberCompounding #PolymerProcessing #MixerTorque #MyRubberHeart