Rubber Heat Resistance: Finding the Right Material

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Discussion Overview

The discussion revolves around identifying types of rubber that can withstand heating up to 30 degrees Celsius without degradation while also being capable of melting for the purpose of sealing two sheets together with a heating filament in between. The scope includes material properties, potential adhesives, and alternative materials.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant questions the feasibility of finding a rubber that melts at only 30 degrees Celsius, suggesting that such a temperature is typical for summer and may not correspond to any rubber properties.
  • Another participant proposes using a strong flexible adhesive or a rubber solvent as alternatives to melting rubber sheets.
  • A suggestion is made to consider two-part cold cure silicone casting rubber, with a link provided for further information on sourcing it.
  • One participant mentions that super glue can bond rubber but lacks flexibility, while also suggesting that the adhesive used for bicycle tire patches may be effective.
  • Another participant introduces poly-ether polyurethane as a potential material, noting its high melting point over 200 degrees Celsius, provided that cold flow is not a concern.

Areas of Agreement / Disagreement

Participants express differing views on the possibility of finding a suitable rubber that meets the specified criteria, with some suggesting alternatives and others questioning the initial premise. No consensus is reached regarding the best approach or material.

Contextual Notes

There are limitations regarding the assumptions about rubber properties, the definitions of melting versus degradation, and the specific requirements for the application. The discussion does not resolve these aspects.

Who May Find This Useful

This discussion may be useful for individuals exploring material options for heating applications, particularly in contexts involving rubber and adhesives.

Engn_sam
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I'm not sure if I'm supposed to post this here, if I'm not, I'm sorry.

That being said, what kinds of rubber can be heated up to 30 degrees c without degradation but can be melted. I would like to sandwich a heating filament between two sheets of rubber and seal them together with heat.
 
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I don't think there is any form of rubber which melts at only 30C.
That is just an average daytime temperature in summer for some parts of the world.
You might find some plastics with a low melting point though.

A strong flexible adhesive might be a better way to join rubber sheets, (or a rubber solvent?)
 
Last edited:
I think super glue sticks rubber quite well but isn't very flexible. The glue used to stick a patch on a bicycle tyre inner tube may also work.
 
If cold flow is not an issue, poly-ether polyurethane.
Injection molded, The melt point is over 200 C.
 

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