Self-temperature control flexible plane heater

Details Self-temperature control flexible plane heater Self-temperature control flexible plane heater

1989-12-22

1991-11-26

Reynolds, Bruce A.

Electric heating

Heating devices

With heating unit structure

219548, 252510, 252511, 428209, H05B 334

Patent

active

050685180

ABSTRACT:
Super high polymeric polyethylene glycol whose molecular weight is 100,000 to 1,000,000 or a mixture of the same and polyethylene glycol whose molecular weight is 600 to 10,000 is dissolvedly mixed with carbon powder or mixed with it in the presence of a solvent so that the carbon powder is uniformly dispersed therein, and thus, a plane heater compound which is flexible at the normal temperature can be obtained. This compound is formed into a self-temperature control heater which can have a required switching temperature within a range of 5.degree. to 60.degree. C. mainly by varying a mixing ratio of polyethylene glycol having a molecular weight of 600 to 10,000. Such a plane heater can be applied for various purposes requiring low-temperature heating, such as preventing freezing or melting snow, and also high-temperature heating, such as heating/air conditioning.

REFERENCES:
patent: 4629584 (1986-12-01), Yasuda
patent: 4780247 (1988-10-01), Yasuda
"Self-Temperature-Control Heaters by Graphite-Poly(Ethylene Glycol) Mixed Systems: Mechanism of Electrical Conduction" by Tokyaki Kimura and Shigeyuki Yasuda, 526 Polymer, 1988, vol. 29, March.

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