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Method for preparing functional heating patch

A heating patch, functional technology, applied in the directions of heating appliances for treatment, cooling appliances for treatment, contraceptives, etc. The effect of moderate temperature, high water absorption efficiency and temperature balance

Inactive Publication Date: 2017-05-10
孙祎
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention: Aiming at the problem that the current heating patch will produce a lot of water vapor during use, causing rashes and allergic symptoms to appear on the human skin under the cover of hot and humid air, the present invention firstly dissolves gelatin in water, and passes through The linking agent is cross-linked with acrylic acid to obtain modified water-absorbing gelatin, and then the corn starch is modified by epichlorohydrin to obtain modified starch, and the modified starch is mixed with chitosan dissolved in acetic acid solution, modified Water-absorbing gelatin, polyvinyl alcohol and other substances are compositely loaded on microsphere silica gel to obtain super absorbent composite microsphere silica gel, and finally mixed with reduced iron powder, activated carbon powder, tourmaline powder and other substances to prepare functional type fever patch
The functional heating patch prepared by the invention solves the problem that the traditional heating patch will produce a lot of water vapor during use, which will cause harm to the skin of the human body, and at the same time has health care functions such as promoting blood circulation and dredging collaterals

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0017] First weigh 20g of gelatin, add it to 200mL of deionized water, stir at 300r / min for 20min to obtain a gelatin solution, then weigh 40g of sodium hydroxide, add it to 100mL of acrylic acid, stir at 300r / min for 20min, then add it to the above gelatin solution, Then add 1.5g potassium persulfate, 10mL mass fraction is 1% N, N-methylenebisacrylamide, and continue to stir for 10 minutes to obtain a mixed solution; heat the above mixed solution with 300W microwave for 5 minutes, then let it stand and cool to At room temperature, soak in 500mL absolute ethanol for 1 hour, then transfer to a centrifuge for centrifugation, collect the precipitate, place the precipitate in a drying oven, and dry it to constant weight at 60°C to obtain modified water-absorbing gelatin, which is ready for use; Then weigh 30g of cornstarch, add it into 50mL of deionized water, and stir and gelatinize at 300r / min for 20min in a constant temperature water bath at 30°C, then add 3mL of epichlorohydrin...

example 2

[0020]First weigh 10g of gelatin, add it to 100mL of deionized water, stir at 400r / min for 30min to obtain a gelatin solution, then weigh 80g of sodium hydroxide, add it to 200mL of acrylic acid, stir at 400r / min for 30min, then add it to the above gelatin solution, Then add 3.0g potassium persulfate, 20mL mass fraction is 1% N, N-methylenebisacrylamide, and continue to stir for 15 minutes to obtain a mixed solution; heat the above mixed solution with a 300W microwave for 10 minutes, then let it stand and cool to At room temperature, soak in 800mL of absolute ethanol for 2 hours, then transfer to a centrifuge for centrifugation, collect the precipitate, put the precipitate in a drying oven, and dry it to constant weight at 70°C to obtain modified water-absorbing gelatin, which is ready for use; Then weigh 40g of cornstarch, add 80mL of deionized water, and stir and gelatinize at 400r / min for 30min in a constant temperature water bath at 35°C, then add 4mL of epichlorohydrin, co...

example 3

[0023] First weigh 15g of gelatin, add it to 150mL of deionized water, stir at 350r / min for 25min to obtain a gelatin solution, then weigh 60g of sodium hydroxide, add it to 150mL of acrylic acid, stir at 350r / min for 25min, then add it to the above gelatin solution, Then add 2.1g of potassium persulfate, 15mL of 1% N, N-methylenebisacrylamide, and continue stirring for 12 minutes to obtain a mixed solution; heat the above mixed solution with a 300W microwave for 7 minutes, then let it stand and cool to At room temperature, soak in 700mL of absolute ethanol for 1 hour, then transfer to a centrifuge for centrifugation, collect the precipitate, place the precipitate in a drying oven, and dry it to constant weight at 65°C to obtain modified water-absorbing gelatin, which is ready for use; Weigh again 35g of cornstarch, add 60mL of deionized water, stir and gelatinize at 350r / min for 25min in a constant temperature water bath at 32°C, then add 4mL of epichlorohydrin, continue to he...

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Abstract

The invention relates to a method for preparing a functional heating patch and belongs to the technical field of heating patches. The preparation method comprises the following steps: dissolving gelatin in water, and cross-linking dissolved gelatin with acrylic acid through a cross-linking agent so as to obtain modified water-absorbing gelatin; modifying corn starch by utilizing epoxy chloropropane so as to obtain modified starch; loading the modified starch, chitosan dissolved in acetic acid solution, the modified water-absorbing gelatin, polyvinyl alcohol and other substances on micro-bead silica gel so as to obtain super absorbent composite micro-bead silica gel; finally, mixing and packaging the super absorbent composite micro-bead silica gel with reduced iron powder, activated carbon powder, tourmaline powder and other substances, thereby obtaining the functional heating patch. According to the functional heating patch prepared by the method disclosed by the invention, the problem that the traditional heating patch produces a lot of water vapor in the using process and then causes harm to human skin is solved, and the functional heating patch has health effects of promoting blood circulation to remove meridian obstruction and the like.

Description

technical field [0001] The invention relates to a preparation method of a functional heating patch, which belongs to the technical field of heating patch preparation. Background technique [0002] Heating patch, also known as heating patch, warming patch, heating sheet, heating bag, etc., is divided into hand warming bag, hand warming bag, foot warming patch, foot warming pad, etc. according to the different parts of use. When in use, it can be held in the hand, or attached to the shoulders, back, waist, feet and related joints of the human body; when in use, it only needs to be applied to the corresponding parts, and the heat will be generated immediately, and the duration is 12 to 20 hours. Going out in the cold winter has a good effect in preventing frostbite and repelling the cold. It is easy to carry and the heat is durable and stable. The reaction principle of the heating patch is to use the primary battery to accelerate the oxidation reaction speed and convert chemic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F289/00C08F220/06C08B31/10A61F7/03
CPCC08F289/00A61F7/034A61F2007/0226A61F2007/038C08B31/10
Inventor 孙祎薛荣飞宋豪
Owner 孙祎
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