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Stable-heating-temperature self-heating material composition

A technology of material composition and heating temperature, applied in the direction of heat exchange materials, chemical instruments and methods, etc., can solve the problem of lack of better self-heating materials, and achieve the effect of long heat generation duration, low cost, and stable reaction

Inactive Publication Date: 2016-12-07
ACADEMY OF ARMORED FORCES ENG PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the absence of fire source and power supply, there is no better self-heating material in the technical field of repairing composite materials, which can meet the requirements of stable curing temperature and curing time for repairing composite materials.

Method used

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  • Stable-heating-temperature self-heating material composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The ratio of the self-heating material composition with stable heating temperature is as follows:

[0015] 1 part of reduced iron powder, 1 part of activated carbon, 1 part of coke, 0.5 parts of sodium chloride, 0.5 parts of sodium carbonate, 1 part of diatomaceous earth, 1 part of aluminum powder, 1 to 3 parts of calcium oxide, 2 parts of aluminum oxide, 10 parts of water share.

[0016] Self-heating materials without alumina are mainly iron powder, aluminum powder, coke, activated carbon, salt, diatomaceous earth, quicklime, and sodium carbonate mixed to generate a large amount of heat in a short time after adding water. Adding alumina can achieve the effect of balancing the temperature. When the heat release is too much or the temperature is too much higher than the expected temperature, the heat is absorbed to reduce the temperature. The temperature fluctuates in a small range up and down.

Embodiment 2

[0018] The ratio of the self-heating material composition with stable heating temperature is as follows:

[0019] 10 parts of reduced iron powder, 4 parts of activated carbon, 2 parts of coke, 2 parts of sodium chloride, 2 parts of sodium carbonate, 3 parts of diatomaceous earth, 4 parts of aluminum powder, 3 parts of calcium oxide, 8 parts of aluminum oxide, and 40 parts of water.

Embodiment 3

[0021] The ratio of the self-heating material composition with stable heating temperature is as follows:

[0022] 5 parts of reduced iron powder, 2 parts of activated carbon, 1.5 parts of coke, 1 part of sodium chloride, 1 part of sodium carbonate, 2 parts of diatomaceous earth, 2 parts of aluminum powder, 1.5 parts of calcium oxide, 4 parts of aluminum oxide, and 20 parts of water.

[0023] It is the preferred formula when the ratio of materials is this ratio. as attached figure 1 As shown, the requirements for curing and repairing epoxy resin-based composite materials can be fully met. The heating and curing requirements for epoxy resin-based composite materials are: heating up for 3 to 5 minutes, heating temperature at 85 to 95°C, and heat preservation for 30 to 35 minutes.

[0024] This self-heating curing method can be used to cure and repair epoxy resin-based composite materials. The tensile-shear strength test of epoxy resin-based composite materials cured by this meth...

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Abstract

The invention discloses a stable-heating-temperature self-heating material composition. The composition is characterized by comprising the following components in parts by weight: 1-10 parts of reduced iron powder, 1-4 parts of activated carbon, 1-2 parts of coke, 0.5-2 parts of sodium chloride, 0.5-2 parts of sodium carbonate, 1-3 parts of diatomite, 1-4 parts of aluminum powder, 1-3 parts of calcium oxide, 2-8 parts of aluminum oxide and 10-40 parts of water. The stable-heating-temperature self-heating material composition has the advantages of long heat-generating duration time and stable reaction, and can satisfy the requirements of stable curing temperature and curing time for the repair composite material.

Description

technical field [0001] The invention relates to a chemical heating material, in particular to a smokeless self-heating material composition, in particular to a self-heating material composition with stable heating temperature. Background technique [0002] In the fields of field construction, convenience food and health care appliances, a large number of self-heating materials made of simple chemical exothermic reactions have been used. It has been known for a long time that adding water to limestone will generate a lot of heat, which is the most basic application of chemical exotherm, but this reaction is too intense and lasts for a short time, not only cannot be used effectively, but also pollutes the environment, so the application range is not wide. Some people also found that the crystallization of sodium acetate solution would release heat and be recyclable, but the self-heating material composition system has low heat production and complicated process, and the packag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/18
CPCC09K5/18
Inventor 李长青董怀斌刘培旺安洪伟张威威巴德玛
Owner ACADEMY OF ARMORED FORCES ENG PLA
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