Temperature control film based on organic phase change and heat-producing patch of constant temperature spontaneous heating film

Abstract

The invention discloses a temperature control film based on organic phase change. The temperature control film comprises a base body and an organic phase change material, wherein the organic phase change material is uniformly applied to the base body to form a film. The organic material comprises one or a mixture of paraffin, fatty acid and a derivative thereof. The base body comprises paper, cloth, a porous membrane and cotton yarn. A heat-producing patch of a constant temperature spontaneous heating film based on organic phase change comprises the constant temperature spontaneous heating film and a microporous breathable film. The constant temperature spontaneous heating film comprises a temperature control film and a spontaneous heating film. Spontaneous heating film materials are uniformly mixed to form the spontaneous heating film. The microporous breathable film is arranged on the outer surface of the spontaneous heating film, and then is adhered to the temperature control film.Or the temperature control film and the spontaneous heating film are adhered to each other to form the constant temperature spontaneous heating film, and the microporous breathable film is arranged onthe outer surface of the constant temperature spontaneous heating film. Or the spontaneous heating film materials are uniformly mixed and then are uniformly applied to one surface of the temperaturecontrol film, so as to form a continuous film, and the constant temperature spontaneous heating film is formed. The microporous breathable film is arranged on the outer surface of the constant temperature spontaneous heating film to form the heat-producing patch. The temperature control film has the advantages accurate and controllable temperature, high heat-producing energy efficiency and the like.

Description

technical field [0001] The invention relates to a temperature control film based on organic phase transition, a constant temperature self-heating film and a heating patch based on the temperature control film, and belongs to the field of material synthesis and its medical care application. Background technique [0002] Self-heating film (steam warm patch) is gradually popularized in health care products, mainly used in steam eye mask, shoulder and neck patch, warm palace patch and other warm patches. The working principle of the existing self-heating film is: release heat energy through oxidation reaction of iron powder under the joint action of water and oxygen. The specific reaction equation is 2Fe+(3 / 2)O 2 +3H 2 O==Fe 2 o 3 +3H 2 O+ (804kJ). The self-heating film mainly controls the oxidation process of iron powder by adjusting the air permeability of the breathable film and the ratio of water, thereby controlling the heating temperature of the heating film. Howeve...

AI Technical Summary

Problems solved by technology

At present, the self-heating film (steam warming patch) cannot precisely control the te