February 25, 2016
It's Getting Cold in Here

Posted by: Lee Bedingfield
Working Temperature of MaxCell® Innerduct

Each week it seems that a timely question will segue nicely into the next Cable Managment blog post.  Since it's winter and the temperature is frigid (except for those of you down under), let's discuss working temperature.  Working temperature is the range in which the material can perform its normal functions.  Outside of this the material could fail due to deformation or cracking. 

Plastics don’t necessarily have a freezing point because they are non-crystalline solids.  What they do approach the colder it gets is a glass stage where they become brittle.  A good generalization I have used with my kids is spaghetti noodles.  Plastics are long molecular chains similar to spaghetti.  When the noodles are warm they move around easily but as they cool they become sticky and bind together.  Later when they cool further they become very stiff and brittle.   For PET and Nylon 6 that area is generally in the range of -400C to -500C (-400F to -580F).  Yes that’s not a typo, at -40 both Celsius and Fahrenheit have the same temp.

On the upper end of the temperature scale the working temperature of PET and Nylon 6 approaches its heat deflection temperature above 1000C (2120F).  Above the heat deflection point the polymer may start to deform.  If anyone reaches this high a temperature in an install please don’t call us to assist.

 

*MaxCell® is a registered trademark of TVC Communications, a division of WESCO Distribution, Inc.

 

 


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