CN1228411C - Self heating material composition and flame-free heater - Google Patents
Self heating material composition and flame-free heater Download PDFInfo
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- CN1228411C CN1228411C CN 03149782 CN03149782A CN1228411C CN 1228411 C CN1228411 C CN 1228411C CN 03149782 CN03149782 CN 03149782 CN 03149782 A CN03149782 A CN 03149782A CN 1228411 C CN1228411 C CN 1228411C
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Abstract
The present invention discloses a heating material composition compounded from 120 to 280 portions by weight of magnesium powder, 30 to 80 portions by weight of iron powder, 2 to 10 portions by weight of sodium chloride, 5 to 20 portions by weight of embedding medium and 2 to 10 portions by weight of slowly releasing and homogeneously spreading agent, wherein the embedding medium is one kind or several kinds selected from methylcellulose, ethyl cellulose, hydroxypropyl cellulose and hydroxypropyl methyl cellulose. The slowly releasing and homogeneously spreading agent is one kind or several kinds selected from salicylic acid, glutaric acid, hexanedioic acid, hippuric acid, butenedioic acid, sodium carboxymethylcellulose and sodium alginate; meanwhile, the present invention provides a flameless self-heating heater produced by a self-heating material composition. A granular heating material composition is packed into an outer bag with water permeability. The self-heating material composition provided by the flameless self-heating heater has the advantages of high heating efficiency, controllable heating speed rate and continuous and stable heat release. The flameless self-heating heater is in the shape of a soft body bag. The flameless self-heating heater can adopt to heated food with any shapes, and adapt to automation large-scale production. The cost of the heating material composition can be greatly lowered.
Description
Technical field
The present invention relates to a kind of exothermic material, be specifically related to a kind of composition of exothermic material and the autothermal well heater of making of said composition that is used for heating such as food, beverage.
Background technology
At present, in ready-to-eat, the autothermal well heater that generally uses is the magnesium-water type well heater, use therein exothermic material, be the composition of Mg-Fe alloy and other catalyzer,, guarantee certain heats for increasing well heater and the contact area that is heated food, generally well heater is processed into sheet, by exothermic material composition (particle) add other tackiness agent again, forming agent is made jointly.This well heater has fixed shape, is attached to the outside of food bag, and during use, add water and make heating particle exothermic heat of reaction, thus heated food.The heating piece of existing this structure is influenced by complete processing, and exothermic material must together use in conjunction with tackiness agent and forming agent, and tackiness agent and forming agent form the heating particle and coat, and have reduced heating particulate heat production efficient; From the spontaneous heating material composition itself, heat production speed can not rationally be controlled, and heats is undesirable.
Summary of the invention
The purpose of this invention is to provide and a kind ofly can control heat production speed and heat production efficient height, spontaneous heating material composition that heats is good.
Another object of the present invention provides a kind of flame-less heating formula well heater that utilizes above-mentioned spontaneous heating material composition.
For achieving the above object, the present invention takes following design:
The invention provides a kind of spontaneous heating material composition, it is made up of following component:
Magnesium powder 120-280 weight part;
Iron powder 30-80 weight part;
Sodium-chlor 2-10 weight part;
Embedding medium 5-20 weight part; And
Uniform dose of 2-10 weight part of slowly-releasing.
Wherein, described embedding medium for be selected from methylcellulose gum (MC), ethyl cellulose (EC), hydroxypropylcellulose (H-HPC) and the Vltra tears (HPMC) one or both or two or more compound.
Wherein, uniform dose of described slowly-releasing for be selected from Whitfield's ointment, pentanedioic acid, hexanodioic acid, urobenzoic acid, butene dioic acid, Xylo-Mucine and the sodium alginate one or both or two or more compound.
The present invention provides the flame-less heating formula well heater with above-mentioned spontaneous heating material preparation of compositions simultaneously, and wherein, the spontaneous heating material composition is a particulate state, is encapsulated in the outer bag of a water-permeable.
In the above-mentioned flame-less heating formula well heater, described outer bag has 1～8 marker space, and described spontaneous heating material composition is in each marker space uniformly distributing.
In the above-mentioned flame-less heating formula well heater, described outer bag is made for nonwoven cloth material, also can be composited for non-woven fabrics and the latticed bonding coat that is lining in its inside.
Adopt technique scheme, advantage of the present invention is:
In the spontaneous heating material composition, adopt magnesium, ferrous metal particle to be scattered in common microbattery system, the heat production efficient height formed in the electrolyte solution; Use embedding medium, can control microbattery particle and electrolytical exposure level, thereby control heat production speed prolongs heat-up time; Use uniform dose of slowly-releasing, can remove stores gradually in the exothermic reaction process, thermopositive reaction is carried out continually and steadily, effervesce is uniform automatically in reaction process can also to make in the composition particle, makes to be heated food and to be heated evenly; Adopt the flame-less heating formula well heater of spontaneous heating material preparation of compositions, what outer bag adopted is dank material, water can see through outer bag rapidly and contact with exothermic material, as activator exothermic reaction is carried out, outer bag parcel is arranged, this well heater can directly be attached to outside the Foods or drinks bag that needs heating, to be convenient for carrying and to use.
Description of drawings
Fig. 1 is a magnesium iron cell reaction principle synoptic diagram;
Fig. 2 is well heater heat production curve of the present invention and typical curve contrast figure;
Fig. 3 is a heater structure synoptic diagram of the present invention;
Fig. 4 is that Fig. 3 well heater China and foreign countries bag is the synoptic diagram of composite bed.
Embodiment
Spontaneous heating material composition provided by the invention has comprised the microbattery particle that magnesium powder, iron powder are formed, ionogen sodium-chlor, and uniform dose of embedding medium and slowly-releasing.Below from several respects explanations the present invention:
One, magnesium iron microbattery particle heat production efficient height:
According to principle of electrochemical reaction, when reactive metal contacts with a cathode material, and when being immersed in the electrolyte solution, corrosion reaction can take place rapidly in reactive metal.The present invention makes the tight magnesium iron cell particle that contacts with magnesium and iron, and Mg-Fe alloy is immersed in ionogen (sodium-chlor) solution, becomes the galvanic cell of short circuit, and corrosion reaction takes place rapidly.When a large amount of magnesium iron cell particles is immersed in the electrolyte solution simultaneously, will discharge a large amount of heats in the short period of time, this heat just can be used for heated food by rationally utilizing.
The detailed process that magnesium iron microbattery particle acts in electrolyte solution can be decomposed into following components:
(1) Mg loses electronics and becomes Mg
2+, Mg
2+Move to cathode direction from anode;
(2) when Mg, the short circuit of Fe the two poles of the earth, unbound electron moves to negative electrode from anode;
(3) water is at catholyte, OH
-The anode direction moves, H
2In cathode exhaust;
(4) a bit, Mg in intermediate zone, the two poles of the earth
2+With OH
-Ionic reaction forms Mg (OH)
2↓.
(5)
, increase solion, Na
+Move Cl to negative electrode
-Anode moves, and accelerates the transmission speed of electric charge between anode and cathode, has just improved cell reaction speed and heat production efficient.
Above-mentioned magnesium iron cell reaction process can be referring to Fig. 1.
Two, embedding medium can be controlled magnesium iron microbattery particle heat production speed:
The microbattery particle contacts abundant more with electrolyte solution, initial reaction rate is just fast more, controls exposure level, can realize the purpose of the initial heat production speed of control heater.
Under the prerequisite that does not reduce heat production efficient, the main way that reduces exposure level is exactly the parcel that the microbattery particle is carried out appropriateness.
The embedding medium that the present invention adopts is the cellulose gum material, specifically can select methylcellulose gum (MC), ethyl cellulose (EC), hydroxypropylcellulose (H-HPC) and Vltra tears (HPMC) for use.This type of material has duality, by magnesium iron microbattery particle being wrapped up after the organic solvent swelling, after organic solvent evaporates drying, the cellulose gum of parcel microbattery particle can form a skim on the surface of microbattery particle, and forms a certain amount of mesh on film; When it contacted with electrolyte solution, cellulose gum to inner, formed the colloidal electric charge conductor of the similar salt bridge of electrolytic solution and cellulose gum one with electrolyte permeability by water absorption and swelling, makes ion migration unblocked, and cell reaction goes on smoothly.The embedding medium characteristics that the present invention adopts are the heat production efficient that the parcel of fiber nethike embrane influences the microbattery particle hardly, and the heat production efficient of test products is near 97.8%.
The present invention is by the amount of the plain glue of controlling fiber, the formation amount of may command nethike embrane, control heater heat production speed well.Control microbattery particle should be similar to food initial stage endothermic curve at the heat production curve at heat production initial stage among the present invention.At first, the present invention makes heater starting setup time needs 30-60 second approximately, therefore inject activator after 30-60 in second, the well heater tangible steam that do not have produces, in case scald one's hand.Secondly the net heat that is produced after starting should be able to satisfy food and add heat request.
Referring to Fig. 2, to adopt microbattery particle heat production curve b behind the embedding medium of the present invention, theoretical endothermic curve a under 5 ℃ compares with food, can find, the present invention makes delay near 60 seconds the start time of heating after adopting the cellulose gum embedding, and shape and the theoretical endothermic curve a of initial stage heat production curve b are comparatively approaching.
Three, uniform dose of slowly-releasing can the cleaning reaction product be piled up and is made the reaction particle effervesce uniform:
Along with the carrying out of reaction, one of primary product of microbattery particle thermopositive reaction magnesium hydroxide can produce accumulation in the fiber nethike embrane, and what influence was reacted proceeds, thereby reaction shows as later stage heat production deficiency.Know that from basic heat production mechanism the primary product of exothermic reaction is magnesium hydroxide and hydrogen, hydrogen can be overflowed automatically, can not produce accumulation, thereby the accumulation of magnesium hydroxide just becomes the principal element of influence heating middle and later periods heat production speed.For this reason, the present invention adopts the acidic substance alkaline magnesium hydroxide that neutralizes, and makes its salt that becomes solubility, makes exothermic reaction just can continue normally to carry out.
The selected acidic substance of the present invention be in Whitfield's ointment (S1), pentanedioic acid (S2), hexanodioic acid (S3), urobenzoic acid (S4), butene dioic acid (S5), Xylo-Mucine (S6) and the sodium alginate (S7) one or both or two or more compound, its good stability, have no side effect, acid moderate, the salt that neutralization reaction produced is solvable, can not produce precipitation of salts, form new accumulation; The most important thing is the H of this type of material
+Can discharge gradually.This is that solubleness is little at normal temperatures because of these organic substances itself, has in the aqueous solution
, along with the carrying out of reaction, system temperature raises, and organic acid solubleness increases gradually, guarantees organic acid H
+Being sustained release dosage, making solution remain metastable pH value, is a kind of good buffer reagent, can impel reaction system under relatively stable pH value condition, carries out with more stable speed, helps food heat absorption balance.When accumulation was excessive, this acid meeting was accelerated ionization under slight alkali environment, with the too much alkaline matter that neutralizes; When accumulating amount more after a little while, under the lower environment of pH value, ionization is slowed down, neutralising capacity descends, i.e. H
+Slowly discharge, all amount is removed stores gradually, effective heat production speed of middle and later periods still can be close, to reach the purpose that maximally utilises the heat production heated food with the endothermic curve of food.
Add that the heat production curve c of composition asks for an interview Fig. 2 behind uniform dose of the slowly-releasing.As can be seen from Figure 2, no matter this heat production curve c is at the heat production initial stage, still in the middle and later periods, all be close with theoretical endothermic curve a form, as seen add slowly-releasing and can regulate heat production speed effectively for uniform dose, help food absorption reaction liberated heat, and do not influence the heat production efficient of well heater.
In addition, use uniform dose of slowly-releasing among the present invention, can be uniform at exothermic material suction reaction back effervesce in packing bag, make well heater and the heating object can uniform contact, reach best heats.
Four, software bag shape well heater can finely satisfy demand for heat:
Well heater is a transmission of heat by contact with the main approach that heat transferred is heated food, and at present method in common is that heated particle is made sheet by approach such as bonding, stiffeners.There is following problem in this method: 1. because well heater is a sheet, requiring to be heated food can only be flats also, has limited the shape that is heated food; 2. owing to binding effect, greatly reduce the heat production efficient of well heater; 3. complex manufacturing realizes that automation size production is very difficult; 4. cause the cost of product higher
The present invention adopts the thinking that is different from existing method during well heater in design, has used uniform dose of slowly-releasing in the exothermic material composition, it and all the other dusty raw materials uniform mixing together, and it is interior and form well heater of the present invention to be encapsulated in the outer bag of water-permeable.When activator (water) is injected well heater, in initial reaction stage in the very short time, the entire reaction body becomes rare thick boiling shape, and can evenly be full of the entire reaction space rapidly, realize the uniform contact heating of well heater and heating object, along with the carrying out in reaction times, activator reduces, the heating medium of reaction compartment can be fixed up gradually equably, and matches with the shape of heating object, continues to realize and the good uniform contact heating of heating object.
Well heater of the present invention has the advantage of highly significant, as: but the well heater software can adapt with the heating object of different shape, enlarged the subject range of well heater; The microbattery particle still exists with separate state in well heater, needn't add formed substances such as tackiness agent, and heat production efficient reaches more than 95%; The well heater production technique is simple and reliable, realizes full-automatic large-scale production quickly and easily, and product cost reduces greatly.
Referring to Fig. 3, bag 1 designs outside well heater, the employing dank material is made, it can establish several regions 11, as 1 ~ 8 zone, around the outer bag 1 and driving fit sealing (15 are the driving fit district) between the zone, heating particle 2 just is sealed in wherein, as be a plurality of regional 11, the particle evenly distribute of then will generating heat is in each zone.For making outer bag driving fit place stopping property more superior, processing is more convenient, and the non-woven fabrics that outer bag uses preferably has Thermoadhesive, perhaps uses matrix material to make, as shown in Figure 4, this outer bag material is composited by the reticular layer 13 and outer 12 of nexine, and reticular layer 13 is the Thermoadhesive material, and outer 12 is the nonwoven layer material, invest outside the reticular layer 13, use this material, around the outer bag and the mode driving fit that can adopt heating between the region intermediate, to adapt to industrial production requirement.
According to above explanation, below provide specific embodiment explanation the present invention.
Embodiment one
The spontaneous heating material composition is formed: metal magnesium powder 200 grams, iron powder 40 grams, sodium-chlor 5 grams, hydroxypropylcellulose (H-HPC) 15 grams, butene dioic acid 4 grams, sodium alginate 2 grams.
Take by weighing above-mentioned substance, its processing is mixed, form a kind of spontaneous heating material composition of the present invention.
17.5 * 11.5 centimetres the outer bag that non-woven fabrics and latticed bonding coat are composited is divided into three zones, gets above-mentioned composition 21 grams and is divided into three parts, is encapsulated in respectively in three zones, then forms a kind of well heater of the present invention.
Embodiment two
The spontaneous heating material composition is formed: metal magnesium powder 280 grams, iron powder 60 grams, sodium-chlor 8 grams, methylcellulose gum (MC) 15 grams, pentanedioic acid 1 gram, butene dioic acid 3 grams, Xylo-Mucine 3 grams and sodium alginate 2 grams.
Take by weighing above-mentioned substance, it is mixed, form another kind of spontaneous heating material composition of the present invention.
Non-woven fabrics is made about 17.5 * 11.5 centimetres outer bag, get above-mentioned composition 21 and restrain in the bag of directly packing into, suitably smooth, then form another kind of well heater of the present invention.
Embodiment three to embodiment seven
Adopt the assembly of following table 1, according to embodiment one or embodiment two method obtain different compositions and well heater, the spontaneous heating material composition in the well heater of wherein packing into is 21 grams, the outer bag of a well heater size is 17.5 * 11.5 centimetres.
Table 1: embodiment three to embodiment seven
| Component (g) | Embodiment three | Embodiment four | Embodiment five | Embodiment six | Embodiment seven | |
| The | 120 | 180 | 220 | 280 | 200 | |
| Iron powder | 40 | 60 | 80 | 30 | 50 | |
| Sodium- | 2 | 8 | 10 | 6 | 4 | |
| Embedding medium | MC | 5 | 8 | 3 | ||
| | 3 | 7 | ||||
| H-HPC | 10 | 5 | 6 | |||
| | 2 | 6 | ||||
| Uniform dose of slowly-releasing | S1 | 6 | 3 | |||
| | 1 | 3 | ||||
| | 4 | 5 | ||||
| S4 | 6 | |||||
| S5 | 5 | |||||
| | 2 | 2 | 2 | |||
| | 1 | 2 | 2 | |||
| Outer bag material | Non-woven fabrics | Matrix material | Matrix material | Matrix material | Matrix material | |
| | 2 | 4 | 5 | 3 | 3 | |
The well heater that embodiment one to embodiment seven is obtained carries out heat production efficient and heating properties test, and heat production efficient is the Chemical Calibration mensuration of standard substance with the heat-conducted calorimeter of RD-1 type with KCL; The heating properties test environment is-15 ℃, being heated food is the assorted rice of 280 gram soft packagings, well heater is two, each one of food upper and lower surface, also supporting having heaters operation bag, insulation paper web are before the test, with well heater be heated food and placed in test environment 24 hours, stopwatch is adopted in timing, and the mini digital tempilstick of TESTO 905-T1 is adopted in temperature measuring.Measurement result such as table 2:
Table 2: embodiment one to seven heat production efficient and heating properties test result:
| The mensuration project | One | Two | Three | Four | Five | Six | Seven |
| Heat production efficient (%) | 97 | 97.5 | 95.5 | 96 | 96.6 | 97.4 | 97.8 |
| The response delay time (s) | 60 | 55 | 62 | 58 | 57 | 51 | 56 |
| Heating object temperature behind the 20min (℃) | 82 | 80 | 88 | 83 | 78 | 82 | 85 |
| Heats is estimated | Good | Good | Good | Good | Good | Good | Good |
By foregoing description as can be seen, spontaneous heating material composition provided by the invention, assembly rationally multiple functional mass, it can be acted synergistically, under the prerequisite of not losing heating efficiency, can rationally control heating speed, adjust heat release and carry out continually and steadily, adapt to the absorption of heating object heat.The calorifier that the present invention makes of the spontaneous heating material composition is a software bag shape, can be heated food with Any shape and adapt, and adapt to automatic mass production, and product cost can reduce greatly.The heating object that well heater of the present invention adapts to can be solid food, and rice, fast food dish as the band packing also can be the liquid drink, as milk in bags, coffee etc.This well heater can be combined to form diversified ready-to-eat with above-mentioned food, drink etc., does not exemplify one by one at this.
Claims (5)
1, a kind of spontaneous heating material composition is characterized in that, it is made up of following component:
Magnesium powder 120-280 weight part;
Iron powder 30-80 weight part;
Sodium-chlor 2-10 weight part;
Embedding medium 5-20 weight part; And
Uniform dose of 2-10 weight part of slowly-releasing;
Described embedding medium for be selected from methylcellulose gum (MC), ethyl cellulose (EC), hydroxypropylcellulose (H-HPC) and the Vltra tears (HPMC) one or both and two or more compound;
Uniform dose of described slowly-releasing for be selected from Whitfield's ointment, pentanedioic acid, hexanodioic acid, urobenzoic acid, butene dioic acid, Xylo-Mucine and the sodium alginate one or both and two or more compound.
2, by the flame-less heating formula well heater of the described spontaneous heating material preparation of compositions of claim 1, it is characterized in that: the spontaneous heating material composition is a particulate state, is encapsulated in the outer bag of a water-permeable.
3, flame-less heating formula well heater according to claim 2 is characterized in that: described outer bag has 1～8 marker space, and described spontaneous heating material composition is in each marker space uniformly distributing.
4, according to claim 2 or 3 described flame-less heating formula well heaters, it is characterized in that: described outer bag is made for nonwoven cloth material.
5, according to claim 2 or 3 described flame-less heating formula well heaters, it is characterized in that: described outer bag is composited for non-woven fabrics and the latticed bonding coat that is lining in its inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03149782 CN1228411C (en) | 2003-08-06 | 2003-08-06 | Self heating material composition and flame-free heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03149782 CN1228411C (en) | 2003-08-06 | 2003-08-06 | Self heating material composition and flame-free heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1487047A CN1487047A (en) | 2004-04-07 |
| CN1228411C true CN1228411C (en) | 2005-11-23 |
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ID=34156369
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|---|---|---|---|
| CN 03149782 Expired - Fee Related CN1228411C (en) | 2003-08-06 | 2003-08-06 | Self heating material composition and flame-free heater |
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Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101138353B (en) * | 2007-10-26 | 2010-10-27 | 孟贤玉 | Preparation method of instant self-heating sea cucumber |
| CN101519584A (en) * | 2009-03-20 | 2009-09-02 | 东莞市安拓普塑胶聚合物科技有限公司 | Massive self-heating composition and method for controlling rate of heat release |
| GB201005932D0 (en) * | 2010-04-09 | 2010-05-26 | Nano Heating Company Ltd | Self-heating packaging and method of manufacturing fuel |
| JP5755421B2 (en) * | 2010-09-13 | 2015-07-29 | アイリスオーヤマ株式会社 | Laminate for producing heating element and heating element having the same |
| CN102408874A (en) * | 2011-11-18 | 2012-04-11 | 北京理工大学 | Method for preparing high-activity water-reactive metal material for melting ice or snow |
| CN103756648A (en) * | 2013-12-23 | 2014-04-30 | 中国航天科工集团八五一一研究所 | Application of hydrogen inhibitor in self-heating food heating agent |
| CN105802590A (en) * | 2016-04-13 | 2016-07-27 | 任春光 | Method for preparing self-heating material for central heating unit |
| CN105860940A (en) * | 2016-04-21 | 2016-08-17 | 吴美燕 | Preparation method of container filled with self-heating material |
| JP7110690B2 (en) * | 2017-04-13 | 2022-08-02 | ライオン株式会社 | Non-aqueous exothermic composition and thermal product |
| CN107410959A (en) * | 2017-05-15 | 2017-12-01 | 重庆凰巢实业有限公司 | The preparation method and self-heating food bag of a kind of self-heating chafing dish |
| CN107048980A (en) * | 2017-05-15 | 2017-08-18 | 重庆凰巢实业有限公司 | A kind of self-heating chafing dish and self-heating food bag |
| CN106987237A (en) * | 2017-05-15 | 2017-07-28 | 重庆凰巢实业有限公司 | A kind of self-heating agent and self-heating bag |
| CN107640447A (en) * | 2017-09-22 | 2018-01-30 | 重庆市友军食品有限公司 | Self-heating chafing dish, noodles, ground rice, Hot and Sour Rice Noodles general heating bag |
| CN108194063A (en) * | 2018-03-07 | 2018-06-22 | 吉林大学 | Utilize the device and method of spontaneous heating material heating secondary buck exploitation hydrate |
| CN114110726A (en) * | 2021-11-23 | 2022-03-01 | 北京科技大学 | Detachable emergency heating device and heating method based on self-heating material |
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2003
- 2003-08-06 CN CN 03149782 patent/CN1228411C/en not_active Expired - Fee Related
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