Constant temperature self-heating device containing phase change microcapsules

A phase-change microcapsule and self-heating technology, which is applied in the directions of heating appliances for therapeutic treatment, microcapsule preparations, cooling appliances for therapeutic treatment, etc. and other problems, to achieve the effect of stable performance and good mechanical properties

Inactive Publication Date: 2018-09-18
SHANGHAI WARMYOU IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In terms of heating temperature control, Chinese patent, application number 99805684.7, Japan Co., Ltd.'s patent "steam heating pad", in the claims, uses microporous materials as temperature control materials to keep

Method used

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  • Constant temperature self-heating device containing phase change microcapsules
  • Constant temperature self-heating device containing phase change microcapsules
  • Constant temperature self-heating device containing phase change microcapsules

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] see figure 1 , the constant temperature self-heating appliance containing phase change microcapsules, comprising a gas-permeable holding bag 1 and a constant temperature heating composition 2 placed in the holding bag 1;

[0048] Example 1

[0049] Preparation of phase change microcapsules:

[0050] (1) Mix formaldehyde, melamine and water with a weight concentration of 37%, adjust the pH of the system to 8 with triethanolamine, and stir and react for 30 minutes at 65°C to obtain an aqueous prepolymer solution;

[0051] The dosage ratio of each component is:

[0052] 37% formaldehyde: melamine=2: 1, molar ratio;

[0053] The weight consumption of water is 8 times of melamine;

[0054](2) Adding paraffin wax and water with a melting point of 45°C to the prepolymer of step (1), the weight consumption of water is 5 times that of melamine, at 30°C, the speed of 1600r / min is stirred and emulsified for 40min, and the temperature is adjusted to 55°C, the stirring speed is...

Embodiment 2

[0065] Preparation of phase change microcapsules:

[0066] (1) Mix formaldehyde, melamine and water with a weight concentration of 37%, adjust the pH of the system to 7 with triethanolamine, and stir and react for 20 minutes at 70°C to obtain an aqueous prepolymer solution;

[0067] The dosage ratio of each component is:

[0068] 37% formaldehyde: melamine=2: 1, molar ratio;

[0069] The weight consumption of water is 10 times of melamine;

[0070] (2) Adding paraffin wax and water with a melting point of 43°C to the prepolymer of step (1), the weight consumption of water is 3 times that of melamine, at 25°C, the speed of 2000r / min is stirred and emulsified for 20min, and the temperature is adjusted to 65°C, the stirring speed is 1000r / min, add sulfuric acid with a weight concentration of 1% dropwise, adjust the drop rate, so that the pH of the system drops to 3 within 1 hour, stop the dropwise addition, raise the temperature to 72°C, add water, the water Add 3 times the we...

Embodiment 3

[0082] The detection method and results of phase change paraffin microcapsules resistance to boiling water are as follows:

[0083] At room temperature, the phase-change microcapsules of 100g embodiment 1 are put into 4 identical heaters A, B, C and D respectively in equal amounts, and in each container, the weight of the phase-change microcapsules is 25g, Adding equal weight concentration respectively in the heater is each 100g of 10% sodium chloride aqueous solution, stirs evenly, the container of the phase-change microcapsule that melamine-formaldehyde resin is housed is heated, and 4 identical heaters are heated respectively to 40°C, 60°C, 80°C and 100°C for half an hour, filtered, dried, and weighed. The results are shown in Table 1.

[0084] Table 1

[0085] Heater model

[0086] As can be seen from Table 1, the quality of the phase-change microcapsules after heating is slightly reduced, because the phase-change microcapsule sample of detection contains unwrap...

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Abstract

The invention discloses a constant temperature self-heating device containing phase change microcapsules. The device comprises a gas permeable storage bag and a constant temperature heating composition placed in the storage bag. The heating temperature is a constant value within 5-60 minutes, and the constant temperature heating composition contains the phase change microcapsules. Improvement is conducted on a traditional formula to ensure the heating temperature stability of a self-heating body; by adjusting a formula of the phase change materials and the temperature of the materials, the temperature can better satisfy the requirements of the human body; the device is attached to the eyes to prevent low-temperature burns. The device can also be used as an auxiliary product for other products or medicine and the like and be used as a warm-up paste for the human body; and under combination with medicine such as a uterus-warming heating body, the temperature is constant, and the effect is remarkable.

Description

technical field [0001] The invention relates to a self-heating device. Background technique [0002] With the continuous development of science and technology, Internet technology is widely used in all aspects of manufacturing and other products. Compared with the traditional working mode, this working mode improves work efficiency and reduces labor intensity. But the same working mode also brings new problems, that is, the physical fitness of employees keeps declining, because they face computers and other digital products for a long time, resulting in visual fatigue, back pain and many other physical discomforts. In response to this situation, many companies and individuals use hot compress products to relieve the discomfort caused by maintaining a certain posture for a long time, and self-heating body, as a popular research, is also widely used. [0003] At present, many patents disclose self-heating devices, but none of them can meet people's requirements for constant ...

Claims

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Application Information

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IPC IPC(8): A61F7/03A61M37/00B01J13/02B01J13/04B01J13/06
CPCA61F7/034A61F2007/0226A61F2007/0261A61F2007/038A61M37/00A61M2037/0007B01J13/02B01J13/046B01J13/06
Inventor 汤小雄孙经一徐发展刘宝宝张冬
Owner SHANGHAI WARMYOU IND CO LTD
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