CN1284533A - Composition of flame-less heating chemical material and self-heating tablet - Google Patents
Composition of flame-less heating chemical material and self-heating tablet Download PDFInfo
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- CN1284533A CN1284533A CN99111403A CN99111403A CN1284533A CN 1284533 A CN1284533 A CN 1284533A CN 99111403 A CN99111403 A CN 99111403A CN 99111403 A CN99111403 A CN 99111403A CN 1284533 A CN1284533 A CN 1284533A
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Abstract
The heating material and self-heating tablet includes mainly Mg-Fe alloy, specific hot melt powder, pH value regulator, active carbon, electrolyte, defoaming agent, lime, sand, etc. in certain proportion and is prepared through hi-energy ball milling, gravity-free mixing, heating furnace adhesion and other technological process. The self-heating tablet has high toughness, good hydroscopicity, even heat release, high reaction efficiency and no pollution of food, and is specially for heating slft packed food with certain humidity and in certain shape, such as fast food and food for field operator.
Description
The present invention relates to chemical exothermic material, especially the flame-less heating material of self-heating food is formed and products thereof.
Self-heating food mainly is made up of three parts, be thermal source, activator device, food, common required thermal source is made up of the heat production chemical feedstocks, and basic functional principle is: by certain active mode, make the heat release that reacts of chemical material, by certain heat transfer form with heat transferred food.
Autothermal reaction has three major types: exothermic oxidation reaction, hydration thermopositive reaction and non-flaming combustion thermopositive reaction.
1. exothermic oxidation reaction, representing type is the oxidation of iron powder type.By to a certain degree with active iron powder and airborne oxygen reaction.This type characteristic has been that temperature is fast, and temperature of reaction reaches about 90 ℃, and heat-processed is long, and cost is general.
2. non-flaming combustion thermopositive reaction represents type for boiling type.Vigorous reaction by certain exciting means, takes place in the oxidation of iron powder thing under the situation that has catalyzer to exist, discharge a large amount of heat.This type characteristic has been that temperature is exceedingly fast, and temperature of reaction reaches more than 1200 ℃, but the heating arrangement complexity, and the cost height excites the complicated special device that needs, operate dangerous, suitability for industrialized production difficulty, cost height.
3. hydration thermopositive reaction is to have the calcium oxide of certain particle size and activity degree or metallic aluminium, iron, magnesium and water or certain solution to react, and divides calcium oxide hydration type, aluminium and water hydration type, iron and water hydration type, magnesium and water hydration type.
1) calcium oxide hydration type, it is fast to play temperature, and temperature of reaction surpasses 150 ℃, but the unit mass thermal value is little, and the thermit powder consumption is big, reactant contaminated food products and environment, the product damp failure that easily absorbs water, storage period is short etc., and cost is general.
2) aluminium and water hydration type have reacted temperature soon, and temperature of reaction can reach 120 ℃, and the unit weight thermal value is medium, the thermit powder large usage quantity, reaction is fierce wayward, has in the exothermal process in a large amount of hydrogen appearances to discharge, and security is relatively poor, the product damp failure that easily absorbs water, storage period is shorter, and cost is general.
3) iron and water hydration type, it is very fast to have reacted warm speed, and the melon instantaneous temperature can reach 250 ℃, but duration of the reaction is short, and the local high temperature that produces easily burns packing, and exothermal process has irritating smell to produce, and cost is medium.
4) magnesium and water hydration type, it is moderate to have reacted warm speed, and temperature of reaction reaches 97 ℃, unit mass quantity of heat production height, the thermit powder consumption is less, heat production longer duration, reacting balance, exothermal process hydrogen discharges evenly, and the product period of storage is long, but exists the forming process prescription of magnesium, iron complicated.
More than a few class autothermal reactions at self-heating food, especially army is in individual meal, Mg, Fe hydration reaction are more rising than other type.
US4522190 provides a kind of flexible electrochemical well heater, and US5220909 provides a kind of self-heating individual soldier's food bag, all is the exemplary applications of magnesium water response type from hot material, has also introduced from hot material in its patent specification and has formed.
The purpose of this invention is to provide a kind of higher flame-less heating chemical material composition that has from thermal effect and practicality, strong, the good water absorption of the self-heating tablet snappiness of producing according to this prescription, it is even to produce heat release speed, the reaction efficiency height, not contaminated food products, be easy to suitability for industrialized production.
The object of the present invention is achieved like this:
The component of heating chemical material comprises: Mg-Fe alloy, ionogen, extraordinary thermal fusing powder, acid-base modifier, gac, defoamer, lime sand etc., wherein Mg-Fe alloy is meant the magnesium with certain particle size and activity degree and the iron of certain particle size and activity degree, makes by high-energy ball milling; Extraordinary thermosol powder is made up of high density polyethylene and ultrahigh molecular weight polyethylene(UHMWPE) UHMWPE; Acid-base modifier is made up of weak acid and salt of weak acid; Defoamer is made up of organic machine compound, mineral oil silicone resin etc.
Extraordinary thermal fusing powder and Mg-Fe alloy through agravicly mix, heat bonding makes flap, heat bonding can be at 130 ℃--carry out under any temperature between 180 ℃.For preventing over-bonded, add a certain amount of gac, make it to become cellular, increase water-absorbent.High density polyethylene(HDPE) (HDPE) makes heating piece have suitable intensity, and ultrahigh molecular weight polyethylene(UHMWPE) (UHMWPE) guarantees that heating piece has certain flexibility.Add a certain amount of quartz sand (SiO
2) as stopping composition, reduce the intensity of Mg, Fe, slow down the speed of heat production, make energy discharge required time and the speed of being maintained to, make the food thermally equivalent, avoid half temperature height of food, second half situation that can not get heating because the heating piece heat release stops occurs.The purpose of acid-base modifier is to reduce pH value, eliminates the accumulation of resultant of reaction magnesium hydroxide and influences reaction efficiency.The purpose of defoamer is to eliminate the foam that the reaction back produces, and prevents that foam is too much, alleviates reflection product pollution food, and the flavor matter of food is descended.
Be prescription of the present invention below.
Granularity from the component of hot material is as follows:
Magnesium 40～80 orders
Iron 100～300 orders
Extraordinary thermosol powder 40～100 orders
Gac 20～60 orders
Acid-base modifier 30～60 orders
Ionogen, defoamer, quartz sand 30～60 orders
Formula rate: (by weight)
Magnesium and iron (4--10): 1
High density polyethylene(HDPE) and ultrahigh molecular weight polyethylene(UHMWPE) (10--5): 1
Weak acid and salt of weak acid 3: 2
The ratio (by weight) of each component in total amount:
Mg-Fe alloy 45%
Extraordinary thermosol powder 33%
Activated carbon 1.5%
Acid-base modifier 1%
Defoamer 0.5%
Quartz sand 12.5%
Ionogen 6.5%
Claims (5)
1, a kind of flame-less heating chemical material is formed and self-heating tablet, comprise Mg-Fe alloy, ionogen etc., it is characterized in that, it also comprises extraordinary thermal fusing powder, acid-base modifier, gac, defoamer, lime sand etc., wherein Mg-Fe alloy is meant the magnesium with certain particle size and activity degree and the iron of certain particle size and activity degree, makes by high-energy ball milling; Extraordinary thermosol powder is made up of high density polyethylene and ultrahigh molecular weight polyethylene(UHMWPE) UHMWPE; Acid-base modifier is made up of weak acid and salt of weak acid; Defoamer is made up of organic compound, silicone resin etc., and they make flap through mixing, heat bonding.
2, flame-less heating chemical material according to claim 1 is formed and self-heating tablet, it is characterized in that, from the granularity of each component of hot material is:
Magnesium 40～80 orders
Iron 100～300 orders
Extraordinary thermosol powder 40～100 orders
Gac 20～60 orders
Weak acid, weak acid sodium 30～60 orders
Ionogen, defoamer, quartz sand 30～60 orders
3, flame-less heating chemical material according to claim 1 is formed and self-heating tablet, it is characterized in that the formulation by weight ratio:
Magnesium and iron (4--10): 1
High density polyethylene(HDPE) and ultrahigh molecular weight polyethylene(UHMWPE) (10--5): 1
Weak acid and salt of weak acid 3: 2
4, flame-less heating chemical material according to claim 1 is formed and self-heating tablet, it is characterized in that the part by weight of each component in total amount:
Mg-Fe alloy 45%
Extraordinary thermosol powder 33%
Activated carbon 1.5%
Acid-base modifier 1%
Defoamer 0.5%
Quartz sand 12.5%
Ionogen 6.5%
5, flame-less heating chemical material according to claim 1 is formed and self-heating tablet, it is characterized in that the heat bonding temperature can be 130 ℃--any temperature between 180 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB991114035A CN1142992C (en) | 1999-08-12 | 1999-08-12 | Composition of flame-less heating chemical material and self-heating tablet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB991114035A CN1142992C (en) | 1999-08-12 | 1999-08-12 | Composition of flame-less heating chemical material and self-heating tablet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1284533A true CN1284533A (en) | 2001-02-21 |
| CN1142992C CN1142992C (en) | 2004-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB991114035A Expired - Fee Related CN1142992C (en) | 1999-08-12 | 1999-08-12 | Composition of flame-less heating chemical material and self-heating tablet |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010105548A1 (en) * | 2009-03-20 | 2010-09-23 | 东莞市安拓普塑胶聚合物科技有限公司 | Bulk self-heating composition and method for controlling heat release rate thereof |
| CN113881407A (en) * | 2021-10-20 | 2022-01-04 | 世纪融合（北京）科技发展有限公司 | Magnesium-iron self-heating powder capable of efficiently self-heating food and preparation process thereof |
| CN113980659A (en) * | 2021-10-20 | 2022-01-28 | 世纪融合（北京）科技发展有限公司 | Magnesium-iron self-heating powder with layered structure and preparation method thereof |
-
1999
- 1999-08-12 CN CNB991114035A patent/CN1142992C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010105548A1 (en) * | 2009-03-20 | 2010-09-23 | 东莞市安拓普塑胶聚合物科技有限公司 | Bulk self-heating composition and method for controlling heat release rate thereof |
| CN113881407A (en) * | 2021-10-20 | 2022-01-04 | 世纪融合（北京）科技发展有限公司 | Magnesium-iron self-heating powder capable of efficiently self-heating food and preparation process thereof |
| CN113980659A (en) * | 2021-10-20 | 2022-01-28 | 世纪融合（北京）科技发展有限公司 | Magnesium-iron self-heating powder with layered structure and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN1142992C (en) | 2004-03-24 |
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Granted publication date: 20040324 Termination date: 20110812 |