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plastic does not conduct heat as well as glass then why plastics can be used as glass tubes?

Heat sinks and other heat-removal applications are among the last areas where thermoplastics—inherent thermal insulators—have yet to replace metals. Until fairly recently, that is. Modifying plastics to improve their thermal conductivity is a burgeoning area of opportunity for a handful of compounders. They have taken up the challenge of using plastics to solve problems of heat build-up in electronics, appliances, lighting, automotive, and industrial products.


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