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Thin-sheet-type self-heating element, preparation method and application thereof

A self-heating, sheet technology, applied in chemical instruments and methods, contraceptives, heat exchange materials, etc., can solve the problems of unstable heating temperature, damage, contamination and damage of human body or clothing, etc., to improve the stability of heating temperature, No material leakage problem, stable heat effect

Active Publication Date: 2015-10-14
SHANGHAI WARMYOU IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] There are several notable deficiencies in the existing products: (1) the heating element is too thick and bulky, which is unsightly when used to keep the human body warm; Pollution damage to the human body or clothing; (3) The heating temperature is unstable, sometimes causing burns, that is, it is easy to cause low-temperature burns

Method used

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  • Thin-sheet-type self-heating element, preparation method and application thereof
  • Thin-sheet-type self-heating element, preparation method and application thereof
  • Thin-sheet-type self-heating element, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] formula:

[0022]

[0023] The thickness of the sheet-type self-heating body is 1mm; the width is 100mm and the length is 100mm

[0024] The molecular weight of the ultra-high molecular weight polyethylene fiber is 1×10 6 ;

[0025] The preparation method of the present invention: mix xanthan gum, industrial salt, and NP-4 at normal temperature to obtain a paste, and let it stand for 10 hours; the added weight of water is 10 times the weight of xanthan gum;

[0026] At room temperature, add iron powder and activated carbon ultra-high molecular weight polyethylene fiber, stir and mix, press into a sheet, and then dry at 180°C for 1.5 hours under a vacuum of 720 torr to obtain the sheet-type self-heating body. The recipe amount of water is added at the point of use.

[0027] How to use: After adding the prescribed amount of water, put it into a bag made of microporous oxygen-permeable film covered with non-woven fabric, and pack it in an oxygen-insulating plastic ou...

Embodiment 2

[0031] formula:

[0032]

[0033] The thickness of the sheet-type self-heating body is 4mm; the width is 100mm and the length is 100mm

[0034] The molecular weight of the ultra-high molecular weight polyethylene fiber is 3×10 8 ;

[0035] The preparation method of the present invention: mix gum arabic, industrial salt, NP-4 and NP-4 at normal temperature to obtain a paste, and leave it to stand for 10 hours; the added weight of water is 15 times of the weight of gum arabic;

[0036] At room temperature, add iron powder and activated carbon ultra-high molecular weight polyethylene fiber, stir and mix, press into a sheet shape, and then dry at 180°C for 1.5 hours under a vacuum of 720 Torr to obtain the sheet-type self-heating body. The recipe amount of water is added at the point of use.

[0037] Using method is the same as embodiment 1.

[0038] The test method described below is used for detection:

[0039] The duration of fever is 155min.

[0040] Average temperatu...

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Abstract

The invention discloses a thin-sheet-type self-heating element, a preparation method and an application thereof. The thin-sheet-type self-heating element includes the following components, by weight, 20.0-60.0% of iron powder, 4.0-20.0% of activated carbon, 2.0-6.0% of ultrahigh-molecular-weight polyethylene fiber, 0.5-5.5% of xanthan gum, Arabic gum and carboxymethylcellulose (CMC), 1.0-4.0% of industrial salt, 0.3-1.5% of an anionic surfactant NP-4 and 12.0-28.0% of water. The self-heating element is greatly improved in heating temperature stability, can be prepared into a thin-sheet-type heating element, is free of leakage and is safe, can be widely applied in a body warming patch, a medical operation warming cushion, a medical and health-caring patch, a female menstrual-period dysmenorrhea-alleviating patch, breast caring, medical health caring of lumbar and cervical disease, instruments and meters, and digital product portable heating and the like fields.

Description

technical field [0001] The invention relates to a self-heating body. Background technique [0002] The self-heating body is a thermal paste (commonly known as "warm paste", "warm baby", "one paste heat", "warm baby", etc.) and is a key material for products used to keep the human body warm. Its basic principle is: iron powder , carbon powder, vermiculite, resin, salt, etc. are mixed in an appropriate proportion to make a heating element, which is put into a bag made of a microporous oxygen-permeable film covered with non-woven fabric, and an oxygen-insulating plastic outer cover is used for external use. bag packaging. When in use, tear off the plastic outer bag, and after the non-woven inner bag contacts the air, oxygen enters through the micropores of the non-woven fabric and oxidizes with the iron powder, thereby generating heat and achieving the effect of keeping warm. At present, the heating temperature of thermal paste products on the market is generally 40 ℃ ~ 65 ℃,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/18A61F7/03
Inventor 汤小雄孙经一
Owner SHANGHAI WARMYOU IND CO LTD
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