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A kind of preparation method of fe-kmno4-mno2 self-heating material

A fe-kmno4-mno2, self-heating technology, applied in the direction of heat exchange materials, chemical instruments and methods, can solve the problems of large amounts of hydrogen, potential explosion hazards, inconvenient use, etc., achieve long-lasting heat release, and accelerate the start The effect of reaction rate and salinization is small

Inactive Publication Date: 2016-06-29
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that a large amount of water is required as a reaction medium during heating, and a large amount of hydrogen gas is generated, which is inconvenient to use and has a potential explosion hazard
Under the condition of strong alkali, both aluminum and zinc react with water to generate a large amount of heat, and can also be used as reactants, but both have potential safety hazards due to the generation of hydrogen

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Reduced iron powder 28g, potassium permanganate 14g, manganese dioxide 21g, sodium tartrate 7g, sodium hydrogen tartrate 3g, activated carbon 16g, anhydrous magnesium sulfate 4g. Mix all the materials evenly to form a safe and efficient self-heating material product for fire-free self-heating food, which is sealed and stored. Take 100g of the finished self-heating material and pack it in non-woven fabric, 90g of water in a plastic bag, and 500mL of milk in a plastic bag aseptically, then put the three into the same plastic bag one by one, and use a layer of foam for insulation on the bag wall Heat insulation layer, after being sealed, it becomes fire-free self-heating milk food. When water is in direct contact with the heating material, an exothermic reaction will occur rapidly. The product can keep heating for 30 minutes, and the milk can reach a drinkable temperature of 55°C in 10 minutes, and the highest temperature can reach 93°C. Shelf life ≥ 12 months.

Embodiment 2

[0033] Reduced iron powder 97g, potassium permanganate 163g, manganese dioxide 3g, sodium citrate 21g, sodium dihydrogen citrate 9g, activated carbon 53g, anhydrous magnesium sulfate 47g. Mix all the materials evenly to form a safe and efficient self-heating material product for fire-free self-heating food, which is sealed and stored. Take 100g of the finished self-heating material and pack it in non-woven fabric, 90g of water in a plastic bag, and 500mL of mineral water in a plastic bag aseptically, then put the three into the same plastic bag one by one, and use a layer of foamed plastic as the wall of the bag. Heat insulation layer, after sealing, it becomes fire-free self-heating food. When water is in direct contact with the heating material, an exothermic reaction will occur rapidly. The product can continue to generate heat for 30 minutes, and the mineral water can reach a suitable drinking temperature of 60 ℃ in 10 minutes, and the highest temperature can reach 95 ℃. ...

Embodiment 3

[0035] Reduced iron powder 3060g, potassium permanganate 3058g, manganese dioxide 240g, sodium citrate 560g, sodium malate 440g, sodium hydrogen malate 50g, activated carbon 1100g, anhydrous magnesium sulfate 900g. Mix all the materials evenly to form a safe and efficient self-heating material product for fire-free self-heating food, which is sealed and stored. Take 100g of the finished self-heating material and pack it in non-woven fabric, 90g of water in a plastic bag, and 400g of eight-treasure porridge in a plastic bag aseptically, and then put the three into the same plastic bag in turn, and use a layer of foam on the wall of the bag for insulation The heat insulation layer becomes fire-free self-heating eight-treasure porridge food after being sealed. When water is in direct contact with the heating material, an exothermic reaction will occur rapidly. The product can continue to heat for 30 minutes, and the eight-treasure porridge can reach a consumption temperature of ...

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Abstract

The invention discloses a preparation method of a Fe-KMnO4-MnO2 spontaneous heating material. The material consists of the following components in percentage by weight of 58-70% of a Fe-KMnO4-MnO2 system, 3-12% of a buffer system with complexing effect, and 18-30% of active carbon-anhydrous magnesium sulfate system. The spontaneous heating material and the spontaneous heating instant food have huge consuming market. The material not only has good economic benefit, but also remarkably improves the catering comfort level of field operators, travelling staff and the like, and has especially significance on improving the camping living quality and the fighting capacity of armies.

Description

technical field [0001] The present invention relates to a kind of Fe-KMnO 4 -MnO 2 The preparation method of a self-heating material is specifically a method for preparing a safe and efficient self-heating material for fire-free self-heating food. Background technique [0002] Self-heating material is a material that automatically releases heat energy through a chemical reaction under suitable conditions. Its special advantages of applicability, convenience and safety have attracted widespread attention from experts and scholars at home and abroad since its inception, and it has developed rapidly. It has become one of the hot technologies in this field. [0003] The first countries in the world to develop self-heating food were the Netherlands and Belgium. The earliest heat containers consisted of two metal cans. The small cans contained processed food, and the upper cover was sealed and put into a large can. Heat agents such as quicklime are placed at the bottom in advan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/18
Inventor 李群李子超王艳玮韩愈赵金凤郇利刚王森赵志唯周梦青
Owner QINGDAO UNIV
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