Self-excitation fire extinguishing composition, preparation method and application

Abstract

The invention discloses a self-excitation fire extinguishing composition, a preparation method and application, and the self-excitation fire extinguishing composition comprises the following components in percentage by mass: 30%-63% of a main fire extinguishing component, 10%-15% of a low-ignition-point substance, 10%-20% of a flame inhibition component, 15%-38% of a gas production component and 15%-38% of an adhesive. According to the self-excitation fire extinguishing composition, the raw materials and the preparation method are simple, heat generated by a fire scene can be automatically absorbed to carry out flameless chemical reaction when a fire disaster occurs, and gas and fire extinguishing substances are generated; the device has a low-temperature automatic function and does not need to be externally connected with conventional detectors such as smoke sensing and temperature sensing.

Description

Technical Field

[0001] The present invention relates to the technical field of fire extinguishing materials, and in particular to a self-excited fire extinguishing composition, a preparation method and an application thereof. Background Art

[0002] Fire extinguishing systems currently on the market typically consist of a detection unit, a control unit, and a fire extinguishing unit. When a fire occurs, the detection unit activates first, transmitting a fire signal to the control unit, which then activates the fire extinguishing unit to extinguish the fire. These units are complex, occupy a large space, and delay fire extinguishing time. This not only increases investment costs, but also increases the probability of system failure due to the large number of accessories, making maintenance difficult.

[0003] In this regard, the present invention relates to a simpler, safer and more efficient self-excited fire extinguishing composition, which does not require pre-units such as detection and control, can directly capture the fire situation and start fire extinguishing in real time, which obviously has positive practical significance. Summary of the Invention

[0004] The purpose of the present invention is to provide a self-exciting fire extinguishing composition, a preparation method and an application. When a fire occurs, the self-exciting fire extinguishing composition absorbs the heat generated by the fire and undergoes a flameless chemical reaction to produce gas and fire extinguishing substances.

[0005] To achieve the above-mentioned purpose of the invention, the technical solution adopted by the present invention is: a self-excited fire extinguishing composition, which includes, by mass percentage: 30% to 63% of a main fire extinguishing component, 10% to 15% of a low-ignition-point substance, 10% to 20% of a flame-suppressing component, 15% to 38% of a gas-generating component, and 15% to 38% of a binder.

[0006] Preferably, the main fire extinguishing component is one or more of potassium ferrocyanide, potassium permanganate, potassium perchlorate, and potassium chlorate.

[0007] Preferably, the low ignition point substance is one or more of red phosphorus, sulfur, and camphor.

[0008] Preferably, the flame suppression component is one or more of phosphite, aluminum oxide, magnesium hydroxide, ammonium dihydrogen phosphate, diammonium hydrogen phosphate, and potassium carbonate.

[0009] Preferably, the gas-generating component is one or more of dimethyldiamide, melamine, hexamethylenetetramine, and dicyandiamide.

[0010] Preferably, the binder is one or more of polyvinyl alcohol, acetal glue, hydroxypropyl methylcellulose, phenolic resin, nitrocellulose, and starch.

[0011] Preferably, the composition comprises, by mass percentage, 41% to 55% of a main fire extinguishing component, 12% to 13% of a low ignition point substance, 10% to 20% of a flame suppressing component, 16% to 25% of a gas generating component, and 13% to 25% of an adhesive.

[0012] The present application also claims a method for preparing a self-exciting fire extinguishing composition, which is used to prepare the self-exciting fire extinguishing composition described above, comprising: completely dissolving a binder with a solvent to prepare a binder solution;

[0013] The main fire extinguishing component, the low ignition point substance, the flame suppressing component and the gas generating component are weighed in proportion and mixed evenly using a 100-mesh sieve to prepare a mixture. The mixture is added to the adhesive solution and stirred evenly.

[0014] Preferably, the solvent comprises deionized water or alcohol.

[0015] The present application also claims protection for the use of a self-exciting fire extinguishing composition, wherein the self-exciting fire extinguishing composition described above is pressed, dried into shape, and pasted to the space around the fire-prone point.

[0016] Preferably, the self-excited fire extinguishing composition is pressed and dried into a shape of a sheet, a strip, a column or other easily pasted sheet.

[0017] The present application also claims protection for the use of a self-exciting fire extinguishing composition, wherein the self-exciting fire extinguishing composition described above is made into a coating and sprayed into the space around a fire-prone point.

[0018] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0019] 1. The self-igniting fire extinguishing composition designed in this invention uses simple raw materials and preparation methods. When a fire occurs, it can automatically absorb the heat generated by the fire and undergo a flameless chemical reaction to produce gas and fire extinguishing substances. It also has a low-temperature automatic function, eliminating the need for external conventional detectors such as smoke and temperature sensors.

[0020] 2. The self-excited fire extinguishing composition designed by the present invention can fully meet the application requirements in early fire prevention and control, and is particularly suitable for early fire prevention and control in small spaces, such as switch cabinets, substations, etc. It only needs to stick or spray the fire extinguishing composition patch of the present invention around the ignition point to effectively control the early fire. The method of use is simple and convenient. DETAILED DESCRIPTION

[0021] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0022] Unless otherwise specified, the examples of the present invention in which specific conditions are not specified were carried out under conventional conditions or the conditions recommended by the manufacturer. All raw materials, reagents, etc. used without indicating the manufacturer are conventional products that can be purchased commercially. The materials involved in the following examples can all be obtained from commercial channels.

[0023] Example 1

[0024] This embodiment relates to a method for preparing a self-igniting fire extinguishing composition, comprising weighing 10 g of polyvinyl alcohol and completely dissolving it in 10 g of deionized water to prepare a polyvinyl alcohol solution.

[0025] Mix 16g of potassium ferrocyanide, 24g of potassium chlorate, 12g of camphor, 12g of phosphite, and 20g of dicyandiamide using a 100-mesh sieve, then add the polyvinyl alcohol solution to the mixed powder, stir evenly, press into a 1.5mm thick sheet structure, and dry it for use.

[0026] The dried sheet structure was cut into 3cm*3cm rectangular patches and pasted on the steel plate with adhesive. An alcohol lamp was placed under the patch, with the fire source 20cm away from the patch. The alcohol lamp was lit and it was observed that the fire extinguishing composition patch started within 5 seconds and extinguished the fire within 10 seconds. The whole process was a flameless reaction.

[0027] Example 2

[0028] This embodiment relates to a method for preparing a self-igniting fire extinguishing composition. 22 g of phenolic resin is weighed and completely dissolved in 40 g of alcohol to prepare a phenolic resin solution.

[0029] Mix 32g potassium chlorate, 18g potassium permanganate, 18g red phosphorus, 18g aluminum oxide, 12g melamine, and 12g hexamethylenetetramine evenly with a 100-mesh sieve, then add the polyvinyl alcohol solution to the mixed powder, stir evenly, press into a 1.5mm thick sheet structure, and dry it for use.

[0030] Cut the dried fire extinguishing composition sheet into 3cm*3cm rectangular patches and affix them to a steel plate with adhesive. Place an alcohol lamp below the patch, with the fire source 20cm away. Light the alcohol lamp and observe that the fire extinguishing composition patch activates within 5 seconds and extinguishes the fire within 10 seconds. The entire process is flameless.

[0031] Example 3

[0032] This embodiment relates to a method for preparing a self-igniting fire extinguishing composition. 32 g of hydroxypropyl methylcellulose is weighed and completely dissolved in 100 g of deionized water to prepare a hydroxypropyl methylcellulose solution.

[0033] Mix 78g of potassium perchlorate, 22g of sulfur, 12g of ammonium dihydrogen phosphate, 12g of diammonium hydrogen phosphate, and 32g of dimethyl diamide through a 100-mesh sieve, then add the mixture to the hydroxypropyl methylcellulose solution and stir evenly.

[0034] The mixed solution was sprayed onto the inner surface of a 10cm (length) x 10cm (width) x 20cm (height) distribution box using a spray gun to a thickness of 0.3mm. One side of the distribution box was lined with transparent plexiglass to facilitate observation of the fire extinguishing process. An alcohol lamp was placed below the spraying area, with the fire source 15cm from the patch. Upon lighting the alcohol lamp, the fire extinguishing composition patch activated within 3 seconds and extinguished the fire within 8 seconds, a flameless reaction.

[0035] It can be clearly seen from the above Examples 1 to 3 that the self-exciting fire extinguishing composition is simple to prepare. During the fire extinguishing process, the formed composition does not require an external excitation device and no flame is generated by the composition during the fire extinguishing process.

[0036] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A self-exciting fire extinguishing composition, characterized in that: Calculated by mass percentage, it includes: 30% to 63% of main fire extinguishing component, 10% to 15% of low ignition point substance, 10% to 20% of flame suppression component, 15% to 38% of gas generating component, and 15% to 38% of adhesive.

2. A self-exciting fire extinguishing composition according to claim 1, characterized in that: The main fire extinguishing component is one or more of potassium ferrocyanide, potassium permanganate, potassium perchlorate and potassium chlorate.

3. A self-exciting fire extinguishing composition according to claim 1, characterized in that: The low ignition point substance is one or more of red phosphorus, sulfur, and camphor.

4. A self-exciting fire extinguishing composition according to claim 1, characterized in that: The flame suppression component is one or more of phosphite, aluminum oxide, magnesium hydroxide, ammonium dihydrogen phosphate, diammonium hydrogen phosphate, and potassium carbonate.

5. A self-exciting fire extinguishing composition according to claim 1, characterized in that: The gas-generating component is one or more of dimethyldiamide, melamine, hexamethylenetetramine and dicyandiamide.

6. A self-exciting fire extinguishing composition according to claim 1, characterized in that: The adhesive is one or more of polyvinyl alcohol, acetal glue, hydroxypropyl methylcellulose, phenolic resin, nitrocellulose and starch.

7. A self-exciting fire extinguishing composition according to claim 1, characterized in that: Calculated by mass percentage, it includes: main fire extinguishing component 41% to 55%, low ignition point substance 12% to 13%, flame suppression component 10% to 20%, gas generating component 16% to 25%, and adhesive 13% to 25%.

8. A method for preparing a self-exciting fire extinguishing composition, characterized in that: For preparing the self-igniting fire extinguishing composition according to any one of claims 1 to 7, comprising: completely dissolving the binder with a solvent to prepare a binder solution; The main fire extinguishing component, the low ignition point substance, the flame suppressing component and the gas generating component are weighed in proportion and mixed evenly using a 100-mesh sieve to prepare a mixture. The mixture is added to the adhesive solution and stirred evenly.

9. An application of a self-excited fire extinguishing composition, characterized in that: The self-excited fire extinguishing composition according to any one of claims 1 to 7 is pressed, dried and formed into a shape and then pasted in the space around the ignition point.

10. An application of a self-excited fire extinguishing composition, characterized in that: The self-exciting fire extinguishing composition according to any one of claims 1 to 7 is made into a coating and sprayed on the space around the ignition point.