Phase change material cold compress patch

A technology of phase change materials and organic phases, applied in heat exchange materials, cooling appliances for therapeutic treatment, chemical instruments and methods, etc., can solve the problems of slow cooling speed, slow cold therapy process, high phase transition temperature, etc. , to achieve the effect of improving the ability to absorb heat, efficiently cooling biological tissues, and high efficiency of cold compress

Inactive Publication Date: 2022-04-12
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The material inside the cooling vest has a high phase transition temperature, and its application range is limited to high temperature operations and cooling after exercise
When dealing with acute injuries, the rate of cooling provided will also be slower due to the small temperature gradient, slowing down the cold therapy process which is disadvantageous

Method used

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Examples

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Effect test

preparation example Construction

[0056] The preparation method of the low temperature eutectic phase change material comprises the following steps:

[0057] Use a precision electronic balance to weigh the organic phase change material according to the mass ratio, and mix and grind the thickener with a total mass ratio of 0.5%~1%. After heating until completely melted, keep the temperature constant, use magnetic stirring for 25-30 minutes, then add 1% of the total mass of emulsifier, continue heating and magnetic stirring for 10-15 minutes, take it out, and cool it at room temperature to obtain a low-temperature eutectic phase change material .

[0058] Preferably, the magnetic stirring speed in the manufacturing step is 300 r / min.

[0059] In the low-temperature eutectic phase change material of the present invention, because the main component used is an organic phase change material, the degree of supercooling is small, and the phase separation phenomenon is not as remarkable as that of the inorganic phase...

Embodiment 1

[0076] An organic eutectic phase change material prepared from methyl laurate (98%) and methyl palmitate (98%) without further purification. According to the mass ratio of methyl laurate to methyl palmitate M1:M2=90:10;80:20;70:30;60:40;50:50;40:60;30:70;20:80;10: 90 were doped to obtain nine groups of samples, by Calculate the eutectic point of the eutectic phase change material of methyl laurate and methyl palmitate, the calculation results are as follows figure 1 , which shows that the best mass ratio of methyl laurate to methyl palmitate M1:M2=68:32 is obtained at the eutectic point of 13°C. The latent heat of phase change, the calculation result is 178J / g, which makes it suitable for the corresponding needs. After weighing, put the thickener gelatin into a magnetic stirring pot and heat and stir above the melting point of the phase change material. After 30 minutes, add the emulsifier sodium lauryl sulfate and use magnetic stirring for 10 minutes, then cool to room tem...

Embodiment 2

[0078] An organic eutectic phase change material, prepared by lauric acid (98%) and lauryl alcohol (98%), repeating the steps in Example 1, the calculation results are as follows figure 2 Shown, made in mass ratio (28:72), phase transition point (15°C) and melting enthalpy (183 J / g). Get PCM15.

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Abstract

The invention provides a phase change material cold compress patch, and belongs to the technical field of cooling and cold compress. The cold compress patch is a eutectic phase-change material formed by mixing an organic phase-change material and an organic phase-change material, particularly a phase-change material composed of fatty acid and derivatives thereof, the phase-change temperature of the phase-change material is 13-19 DEG C, and the latent heat of phase change is 160 J / g or above. Furthermore, the eutectic phase change material is two of methyl laurate, methyl palmitate, laurinol, lauric acid and palmitic acid. The cold compress patch can accurately control the temperature of local tissues of a human body for a long time by using a series of researched and developed phase change cold compress materials according to the requirements of different parts of the human body on the cold compress temperature. And the cold compress efficiency is high, the biological safety is high, and the economical efficiency is good.

Description

technical field [0001] The invention relates to the technical field of cooling and cold compress, in particular to a phase change material cold compress. Background technique [0002] Cold compress refers to a method of treatment by applying low temperature to the injured part of the patient to change the blood circulation and local metabolism of the human body. At present, the main cold compress methods in clinical application include ice packs and gel freezing packs. The physiological effects they produce are: local tissue temperature reduction, vasoconstriction, analgesic and anti-inflammatory effects. Therefore, cold compress therapy is mainly used for soft tissue injury, pain relief, first aid treatment of burns, and physical cooling of heatstroke and fever. [0003] Now cold therapy has been widely recognized, and there are many clinical directions, but further research is still needed. For example, how to choose the cold therapy method according to the application ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F7/02C09K5/06
Inventor 乐恺马子峰杨宇贤张欣欣
Owner UNIV OF SCI & TECH BEIJING
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