High heat high inpact insulator infomation wanted

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    Heat Insulator
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Discussion Overview

The discussion focuses on finding a suitable insulator that can withstand high heat and mechanical impact, particularly in the context of a specific application involving a metal tube and copper conductor. Participants explore various materials and their properties, including metals, coatings, and alternative insulators.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant seeks a strong metal insulator that can endure high heat and mechanical stress while maintaining the integrity of the copper conductor.
  • Another participant notes that metals are typically conductive and suggests silicon rubber and fiberglass as potential insulators.
  • A participant clarifies the need for a metal tube coated with rust on the outside, emphasizing that copper is too soft and prone to flattening under stress.
  • There is a suggestion that a non-conductive coating could be applied to the metal to prevent conductivity up to a certain voltage.
  • Specifications for the application are requested, including breakdown voltage, definitions of "tough" and "beating," and the nature of the mechanical loads involved.
  • One participant provides specific electrical parameters, indicating a maximum voltage of 80 volts and a current pulse of 2000 amps, describing the mechanical impact as similar to a car hitting a brick wall repeatedly.

Areas of Agreement / Disagreement

Participants have not reached a consensus on the best material or approach for the insulator. Multiple competing views and suggestions remain, with ongoing questions about specifications and material properties.

Contextual Notes

Limitations include unspecified definitions of "tough" and "beating," as well as the lack of clarity on the shapes of objects in contact and the nature of the mechanical stresses involved.

MIKESMIND
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I would like to find an insulator that can work in high heat and take a beating. A strong metal would be nice. It will be taking a beating and it will have to hold the copper in it form or the copper will flattened out
 
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Aren't metals usually conductive?
Silicon rubber is great stuff.
Fiberglass can take a lot of heat.
What are you trying to do?
 
Sorry for the delay
Yes but what I would like is a metal tube coated with rust on the outside and a good conductor on the inside. Copper is too soft and flattened out in a few minutes. The insulation breaks as well

y
 
MIKESMIND said:
Sorry for the delay
Yes but what I would like is a metal tube coated with rust on the outside and a good conductor on the inside. Copper is too soft and flattened out in a few minutes. The insulation breaks as well

y

As Carl points out, metals are generally conductive. There might be some coating that could be applied to the metal shape that would be non-conductive (up to some voltage).

Can you list your specifications for this application? What breakdown voltage (or breakdown electric field, since the thickness may not be specified)? Can you define "tough" and "beating"? Is it a compressive load only, or is there a rubbing/frictional action too that it needs to stand up against? What are the shapes of the objects that come in contact with each other?
 
The max voltage would be no higher then 80 volts. The current could go as high as a 2000 amp pulse of about 100th of a second and about 20 a second. These are not fixed the lower the voltage and the higher the current the better.
This unit is going to be like a car hitting a brick wall 20 times a second the copper is going to be beat and flatened. It will also be under high g force. It's like a RAM gun that's 2" long.
 

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