CN119386423A - Insulating flame-retardant automatic fire-extinguishing patch and preparation method thereof - Google Patents
Insulating flame-retardant automatic fire-extinguishing patch and preparation method thereof Download PDFInfo
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Abstract
The invention relates to an insulating flame-retardant automatic fire-extinguishing patch and a preparation method thereof. The insulating flame-retardant fire-extinguishing patch comprises a base film, an adhesive layer and an insulating flame-retardant layer, wherein the insulating flame-retardant layer comprises 20-60 parts of perfluoro 2-methyl-3-pentanone microcapsule, 20-30 parts of polydimethylsiloxane, 0.1-5 parts of magnesium hydroxide, 0.1-5 parts of triphenyl phosphate, 0.5-5 parts of tributyl phosphate, 0.1-5 parts of tri (2-ethylhexyl) phosphate, 0.2-5 parts of tri (2, 3-dichloropropyl) phosphate, 0.2-5 parts of tetrabromobisphenol A epoxy resin, 0.5-3 parts of antimonous oxide, 0.1-5 parts of borate, 0.1-5 parts of dichlorobromomethane and 0.1-5 parts of trichlorobromomethane. The insulating flame-retardant fire-extinguishing patch is easy to install, does not need maintenance, can actively extinguish fire in the initial stage of fire, can achieve the effect of extinguishing fire for multiple times, can effectively prevent re-combustion, prevents the expansion of the fire, and is safe, green and environment-friendly.
Description
Technical Field
The invention relates to the technical field of chemical fire extinguishment, in particular to an insulating flame-retardant automatic fire-extinguishing patch and a preparation method thereof.
Background
Most of the traditional fire extinguishing products depend on manual operation, and particularly when a fire disaster occurs, manual intervention is needed to start the fire extinguishing system. However, when a fire occurs in a confined or confined space, people often cannot detect the fire at the first time of the fire, because of the lack of effective monitoring equipment in these areas, resulting in rapid spread of the fire, and thus irreparable economic loss and safety hazards.
In recent years, new types of extinguishing media in the form of microcapsules have been increasingly introduced into the field of fire protection. By encapsulating the fire extinguishing agent in microcapsules, the technology automatically releases the fire extinguishing agent when encountering high temperature or flame, can quickly restrain fire at the early stage of fire, and does not need to rely on manual operation. Therefore, it shows remarkable advantages in improving fire extinguishing efficiency and reducing waste of fire extinguishing medium, and is particularly suitable for automatic fire extinguishing systems. However, despite the great potential of microcapsule fire extinguishing technology, existing products remain to be further optimized.
Disclosure of Invention
The invention provides an insulating flame-retardant automatic fire-extinguishing patch and a preparation method thereof.
The invention firstly provides an insulating flame-retardant fire-extinguishing material, which comprises the following components in parts by weight:
20-60 parts of perfluoro 2-methyl-3-pentanone microcapsule,
20-30 Parts of Polydimethylsiloxane (PDMS),
0.1-5 Parts of magnesium hydroxide,
0.1-5 Parts of triphenyl phosphate (TRIPHENYL PHOSPHATE, TPP),
Tributyl phosphate (Tributyl Phosphate, TBP) 0.5-5 parts,
0.1-5 Parts of Tri (2-ethylhexyl) Phosphate (Tri (2-ethylhexyl) Phosphate, TEHP),
Tris (2, 3-dichloropropyl) phosphate (Tris (2, 3-dichloropropyl) phosphate, TDCPP) 0.2-5 parts,
Tetrabromobisphenol A epoxy resin (Tetrabromobisphenol A epoxy resin, TBBPA-EP) 0.2-5 parts,
0.5-3 Parts of antimonous oxide,
0.1-5 Parts of borate,
0.1-5 Parts of dichlorobromomethane,
0.1-5 Parts of trichlorobromomethane.
Preferably, the insulating flame retardant fire extinguishing material comprises, in parts by weight:
50 parts of perfluoro 2-methyl-3-pentanone microcapsule,
25 Parts of polydimethylsiloxane,
3 Parts of magnesium hydroxide,
2 Parts of triphenyl phosphate, and the balance of the water,
3 Parts of tributyl phosphate,
2 Parts of tri (2-ethylhexyl) phosphate,
1.5 Parts of tri (2, 3-dichloropropyl) phosphate,
2.5 Parts of tetrabromobisphenol A epoxy resin,
1 Part of antimony trioxide, and the balance of the antimony trioxide,
2 Parts of borate, and the total weight of the borate,
2.5 Parts of dichlorobromomethane,
2 Parts of trichlorobromomethane.
The existing perfluoro-2-methyl-3-pentanone microcapsule (also called as perfluoro-hexanone microcapsule) can be broken when encountering a fire source, and then the perfluoro-hexanone is released to rapidly extinguish the flame. However, the inventor found that perfluoro-2-methyl-3-pentanone microcapsules or fire extinguishing patches made based on this material could not achieve an effective flame retardance against itself, sometimes even with "fire out" phenomena. In addition, such fire fighting patches are prone to leakage of gas and product failure in high humidity environments (e.g., plum rain seasons).
In order to solve this problem, the inventors found through studies that the addition of polydimethylsiloxane can effectively improve its flame retardant property to itself. While other types of silicone oils can alleviate the "fire out" problem described above to some extent, they do not bond well with perfluoro-2-methyl-3-pentanone microcapsules and can damage the shell structure of the microcapsules, thus limiting their use. The polydimethylsiloxane can maintain the structural integrity of the microcapsule while improving the flame retardant property, thereby better meeting the actual application requirements.
The other components of the insulating flame-retardant fire-extinguishing material are mainly used as flame retardants or flame-retardant auxiliary agents, so that the flame retardant property of the insulating flame-retardant fire-extinguishing material is further improved.
The perfluoro-2-methyl-3-pentanone microcapsule is a novel, safe and environment-friendly fire extinguishing material, and the perfluoro-hexanone fire extinguishing agent is packaged in a flame-retardant polymer shell to form an efficient fire extinguishing system. Can be prepared by the conventional method, and the present invention is not particularly limited.
In the formula of the invention, the polydimethylsiloxane can provide good flexibility, high and low temperature resistance, hydrophobicity and electrical insulation in addition to the functions.
The magnesium hydroxide is mainly used as an inorganic flame retardant, can be decomposed and released to water at high temperature, and has flame retardant and heat absorption effects.
Triphenyl phosphate is mainly used as a flame retardant plasticizer, providing additional flame retardant properties and enhancing the processability of the material.
Tributyl phosphate is used as another flame retardant plasticizer, which helps to improve the flexibility and fire resistance of the material.
The tri (2-ethylhexyl) phosphate is used as a plasticizer and a flame retardant, which is beneficial to improving the fluidity and flame retardant effect of the material.
The tri (2, 3-dichloropropyl) phosphate and tetrabromobisphenol A epoxy resin further improve the flame retardant property.
Antimony trioxide is used as a synergist of halogen flame retardants to enhance the flame retardant effect of materials.
The borate has flame retarding and smoke suppressing effects and helps to reduce smoke generation during fire.
Dichlorobromomethane is used as a flame retardant to provide a halogen flame retardant effect.
Trichlorobromomethane is used as a halogen flame retardant to enhance flame retardant performance and inhibit flame diffusion.
The combination of the above ingredients provides strong flame retardant properties while maintaining the processability, flexibility and durability of the material.
In the present invention, borates include boric acid (H 3BO3), borax (sodium borate, na 2B4O7·10H2 O), and the like.
The insulating flame retardant fire extinguishing material of the present invention may also include pigments, as desired.
The invention also provides a preparation method of the insulating flame-retardant fire-extinguishing material, which comprises the step of uniformly mixing all the components according to a formula.
The invention also provides an insulating flame-retardant fire-extinguishing patch which comprises a base film, a glue layer and an insulating flame-retardant layer which are sequentially connected, wherein the insulating flame-retardant layer is prepared from the insulating flame-retardant fire-extinguishing material.
The invention also provides a preparation method of the insulating flame-retardant fire-extinguishing patch, which comprises the following steps:
uniformly mixing the components of the insulating flame-retardant fire-extinguishing material according to a formula to prepare an insulating flame-retardant layer;
Coating glue on one side of the insulating flame-retardant layer to prepare a glue layer;
and sticking a release film on the adhesive layer to serve as a bottom film.
In general, the insulating flame retardant layer may be formed by a coating method. After the components of the insulating flame-retardant fire-extinguishing material are uniformly mixed according to a formula, the insulating flame-retardant fire-extinguishing material is a thick semi-solid, and is coated to prepare an insulating flame-retardant layer. After the adhesive is dried, one surface of the adhesive is coated with glue as an adhesive layer, and then a release film (or a strong adhesive double-sided adhesive) is adhered as a bottom film.
Typically, a sheet of insulating flame retardant fire fighting tape of size 10cm by 10cm is used per 10-12 cubic decimeter of space. When in actual use, the fire extinguishing paste can be stuck above objects to be protected, such as electric boxes, machine boxes, electric cabinets and other areas which are easy to generate high temperature or ignition points. In the closed space, the fire extinguishing effect is particularly remarkable. When the temperature of the electric box, the machine box or the electric cabinet reaches a certain height or a fire occurs, the fire extinguishing paste can quickly release the internal composite chemical substances, plays roles of retarding flame, isolating oxygen and reducing temperature, and accordingly quickly extinguishes fire and eliminates fire hazards in a sprouting state. The fire extinguishing patch not only can effectively cool down, prevent fire, but also can prevent the fire source from re-burning, thereby avoiding larger loss. In addition, it has the ability to extinguish fires multiple times, continuing to function even in the event of a post-combustion, minimizing losses.
The main mechanism of the insulating flame-retardant fire-extinguishing patch provided by the invention is as follows:
When the internal temperature of the closed environment reaches or exceeds 125 ℃, the insulating flame retardant layer can undergo strong endothermic reaction at high temperature. When heated, the insulating flame-retardant layer decomposes non-combustible gas, dilutes the combustible gas generated by the decomposition of the combustible material, and reduces the concentration of the combustible gas below the lower combustion limit. Meanwhile, the released non-combustible gas also dilutes the oxygen concentration of the combustion area, so that the continuous combustion is effectively prevented, and the flame-retardant effect is achieved. In addition, the insulating flame-retardant layer reduces the temperature of the surface of the combustible by absorbing the heat released by partial combustion, thereby effectively inhibiting the generation of combustible gas and preventing the spread of fire. Meanwhile, the insulating flame-retardant layer can stabilize the foam covering layer, plays roles in isolating oxygen and heat, and prevents the outward diffusion of combustible gas. The composite chemical substances released by the insulating flame-retardant layer further isolate oxygen and reduce the temperature, so that fire extinguishment is rapidly realized. Therefore, the hidden fire hazards can be eliminated in a sprouting state, and the multiple effects of cooling, flame retarding, extinguishing and re-burning prevention are achieved, so that larger losses are avoided.
In some embodiments, the medicine carrying amount of the insulating flame-retardant fire-extinguishing paste is more than or equal to 60%, the response is automatic within 5 seconds, and the active fire-extinguishing effect is achieved about 15 seconds. Typically, an environment of-10 ℃ to 90 ℃ is used, an ambient humidity of HR <85% and a response temperature of 110 + -10 ℃. When the space temperature reaches 105 ℃ or open fire, active detection and automatic excitation are performed to accurately extinguish the fire. The working distance is 5-200mm, the insulativity is strong, the resistance value is more than 2000 megaohms under 500V voltage, the pressure is released in a pressureless manner, the release phenomenon is free from deflagration, and dust residues are almost free from residues.
The insulating flame-retardant fire-extinguishing patch is suitable for various typical application places, including closed environments such as electric cabinets, power distribution cabinets, energy storage battery interiors, intelligent charging and electricity changing cabinets, machine rooms, data centers, aviation, ships, vehicles, libraries, oil extraction and natural gas production facilities, data cabinets and the like.
The insulating flame-retardant fire-extinguishing patch has the outstanding advantages of unique smoothness, softness and hydrophobicity, and excellent chemical stability, electrical insulation property and high and low temperature resistance. The fire extinguishing patch has high flash point and low solidifying point, and can be used for a long time within the temperature range of-10 ℃ to +90 ℃. Meanwhile, the adhesive temperature coefficient is small, the compression ratio is large, the surface tension is low, and the waterproof and moistureproof performances, and the specific heat and the heat conductivity coefficient are small. In addition, the material has excellent heat resistance, electrical insulation, weather resistance, hydrophobicity, physiological inertia and lower surface tension. In electrical applications, it is resistant to high breakdown voltages, has excellent arc and corona resistance, and is non-toxic and environmentally friendly.
The insulating flame-retardant fire-extinguishing paste can extinguish fire for multiple times when being re-burnt, and ensures that a fire source cannot be further diffused. In particular, as the polydimethylsiloxane is added, on one hand, the flame retardant property of the material is obviously improved, and on the other hand, the polydimethylsiloxane can be tightly combined with the perfluoro-2-methyl-3-pentanone microcapsule without damaging the shell structure of the microcapsule, so that the material has stable fire extinguishing effect.
The insulating flame-retardant fire-extinguishing patch is easy to install, does not need maintenance, actively extinguishes fire when an initial fire disaster occurs, can effectively prevent re-combustion, prevents the expansion of the fire disaster, and is safe, green and environment-friendly.
Drawings
Fig. 1 is a photograph of a product of an insulating flame retardant fire extinguishing patch according to an embodiment of the present invention.
Fig. 2 is a flame retardant performance test process of the insulating flame retardant fire extinguishing patch according to the embodiment of the invention.
Detailed Description
Various exemplary embodiments of the invention will now be described in detail, which should not be considered as limiting the invention, but rather as more detailed descriptions of certain aspects, features and embodiments of the invention.
The following perfluoro-2-methyl-3-pentanone microcapsules were purchased from scientific and technological Co.Ltd.
Example 1
The embodiment provides an insulating flame-retardant fire-extinguishing material, which comprises 50 parts by weight of perfluoro 2-methyl-3-pentanone microcapsule, 25 parts of polydimethylsiloxane, 3 parts of magnesium hydroxide, 2 parts of triphenyl phosphate, 3 parts of tributyl phosphate, 2 parts of tri (2-ethylhexyl) phosphate, 1.5 parts of tri (2, 3-dichloropropyl) phosphate, 2.5 parts of tetrabromobisphenol A epoxy resin, 1 part of antimonous oxide, 2 parts of borax, 2.5 parts of dichlorobromomethane and 2 parts of trichlorobromomethane. According to the formula, the components are uniformly mixed to prepare the insulating flame-retardant fire-extinguishing material.
The embodiment also provides an insulating flame-retardant fire-extinguishing patch, which comprises a base film, a glue layer and an insulating flame-retardant layer which are sequentially connected, wherein the insulating flame-retardant layer is prepared from the insulating flame-retardant fire-extinguishing material. The preparation method comprises the steps of uniformly mixing the components of the insulating flame-retardant fire-extinguishing material according to a formula to obtain a thick semi-solid, and coating to prepare the insulating flame-retardant layer. After the adhesive is dried, one surface of the adhesive is coated with glue, and then a release film (or a strong adhesive double-sided adhesive) is adhered to serve as a bottom film.
The photo of the insulating flame-retardant fire-extinguishing paste product of the embodiment can be seen in fig. 1.
Example 2
The embodiment provides an insulating flame-retardant fire-extinguishing material, which comprises 20 parts of perfluoro 2-methyl-3-pentanone microcapsule, 20 parts of polydimethylsiloxane, 0.1 part of magnesium hydroxide, 0.1 part of triphenyl phosphate, 0.5 part of tributyl phosphate, 0.1 part of tri (2-ethylhexyl) phosphate, 0.2 part of tri (2, 3-dichloropropyl) phosphate, 0.2 part of tetrabromobisphenol A epoxy resin, 0.5 part of antimonous oxide, 0.1 part of borax, 0.1 part of dichlorobromomethane and 0.1 part of trichlorobromomethane. According to the formula, the components are uniformly mixed to prepare the insulating flame-retardant fire-extinguishing material.
The embodiment also provides an insulating flame-retardant fire-extinguishing patch, which comprises a base film, a glue layer and an insulating flame-retardant layer which are sequentially connected, wherein the insulating flame-retardant layer is prepared from the insulating flame-retardant fire-extinguishing material. The preparation method is the same as in example 1.
Example 3
The embodiment provides an insulating flame-retardant fire-extinguishing material, which comprises 60 parts by weight of perfluoro 2-methyl-3-pentanone microcapsule, 30 parts of polydimethylsiloxane, 5 parts of magnesium hydroxide, 5 parts of triphenyl phosphate, 5 parts of tributyl phosphate, 5 parts of tri (2-ethylhexyl) phosphate, 5 parts of tri (2, 3-dichloropropyl) phosphate, 5 parts of tetrabromobisphenol A epoxy resin, 3 parts of antimonous oxide, 5 parts of borax, 5 parts of dichlorobromomethane and 5 parts of trichlorobromomethane. According to the formula, the components are uniformly mixed to prepare the insulating flame-retardant fire-extinguishing material.
The embodiment also provides an insulating flame-retardant fire-extinguishing patch, which comprises a base film, a glue layer and an insulating flame-retardant layer which are sequentially connected, wherein the insulating flame-retardant layer is prepared from the insulating flame-retardant fire-extinguishing material. The preparation method is the same as in example 1.
Comparative example 1
The comparative insulating flame retardant fire extinguishing patch differs from example 1 only in that the insulating flame retardant fire extinguishing material does not contain polydimethylsiloxane.
Comparative example 2
The comparative insulating flame retardant fire extinguishing patch differs from example 1 only in that the polydimethylsiloxane in the insulating flame retardant fire extinguishing material was replaced with silicone oil of table 1 below.
TABLE 1
| Insulating flame-retardant fire-extinguishing label number | Silicone oil |
| Comparative example 2-1 | Polymethylchlorosiloxane (Polymethylchlorosilane) |
| Comparative examples 2 to 2 | Polyphenyl siloxanes (Polyphenylmethylsiloxane) |
| Comparative examples 2 to 3 | Polyethylsiloxane (Polyethyldimethylsiloxane) |
| Comparative examples 2 to 4 | Polyfluorosiloxane (Perfluorinated Silicones) |
Experiment 1 experiment for investigating flame retardant property of insulating flame retardant extinguishing material on self
The insulating flame-retardant fire-extinguishing stickers of the examples 1-3 and the comparative examples 1-2 with the same size are respectively stuck in an experiment box shown in fig. 2, and are placed for 60 months under the environment of the temperature of 25-35 ℃ and the relative humidity RH of 80% -85%.
As a result, it was found that the insulating flame retardant fire extinguishing paste of examples 1 to 3 did not exhibit a failure phenomenon, wherein example 1 was the best in effect, the insulating flame retardant fire extinguishing paste of comparative example 1 exhibited a leakage gas phenomenon, and the product failed, and the insulating flame retardant fire extinguishing paste of comparative example 2 did not exhibit a leakage gas phenomenon, but its silicone oil was not well bonded with perfluoro-2-methyl-3-pentanone microcapsule, and it was presumed that it had damaged the shell structure of the microcapsule.
Experiment 2 experiment of flame retardant properties of insulation flame retardant fire extinguishing paste
The specific experimental procedure is shown in fig. 2, wherein a-f represent the different stages of the experimental procedure.
Preparing 2 metal cabinets with doors of the same specification, pouring a proper amount of n-heptane into a metal container (such as an aluminum lunch box) and then placing the metal cabinets on an iron stand in the metal cabinets, pasting an insulating flame-retardant fire-extinguishing paste of the embodiment 1 on the top of the inner side of 1 metal cabinet (namely, the right side of the figure 2), igniting, closing a cabinet door to ensure that the metal cabinet is a relatively airtight space, pasting the metal cabinet (namely, the right side of the figure 2) of the insulating flame-retardant fire-extinguishing paste of the embodiment 1, opening the cabinet door, continuing igniting, simulating a re-ignition phenomenon, re-extinguishing in about 15 seconds, repeating the ignition for a plurality of times, and continuously igniting the metal cabinet (namely, the left side of the figure 2) without pasting the fire-extinguishing paste in the whole process.
The fire extinguishing effect of the commercial similar 3 products tested by the same method is obviously inferior to that of the fire extinguishing patch of the embodiment 1.
Experimental results show that the insulating flame-retardant fire-extinguishing patch has a good fire-extinguishing effect, can actively extinguish fire in the initial stage of fire, can achieve a plurality of fire-extinguishing effects, and can effectively prevent re-combustion.
The features described in the various embodiments of the present disclosure may be interchanged or combined with one another in the description to enable those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. An insulating flame-retardant automatic fire extinguishing material is characterized by comprising the following components in parts by weight:
20-60 parts of perfluoro 2-methyl-3-pentanone microcapsule,
20-30 Parts of polydimethylsiloxane,
0.1-5 Parts of magnesium hydroxide,
0.1-5 Parts of triphenyl phosphate,
0.5 To 5 parts of tributyl phosphate,
0.1-5 Parts of tri (2-ethylhexyl) phosphate,
0.2-5 Parts of tri (2, 3-dichloropropyl) phosphate,
0.2 To 5 parts of tetrabromobisphenol A epoxy resin,
0.5-3 Parts of antimonous oxide,
0.1-5 Parts of borate,
0.1-5 Parts of dichlorobromomethane,
0.1-5 Parts of trichlorobromomethane.
2. The insulating flame retardant fire extinguishing material according to claim 1, wherein the material comprises 50 parts by weight of perfluoro 2-methyl-3-pentanone microcapsule,
25 Parts of polydimethylsiloxane,
3 Parts of magnesium hydroxide,
2 Parts of triphenyl phosphate, and the balance of the water,
3 Parts of tributyl phosphate,
2 Parts of tri (2-ethylhexyl) phosphate,
1.5 Parts of tri (2, 3-dichloropropyl) phosphate,
2.5 Parts of tetrabromobisphenol A epoxy resin,
1 Part of antimony trioxide, and the balance of the antimony trioxide,
2 Parts of borate, and the total weight of the borate,
2.5 Parts of dichlorobromomethane,
2 Parts of trichlorobromomethane.
3. The preparation method of the insulating flame-retardant fire-extinguishing material is characterized by comprising the step of uniformly mixing all the components according to a formula.
4. An insulating flame-retardant fire-extinguishing patch is characterized by comprising a base film, a glue layer and an insulating flame-retardant layer which are sequentially connected, wherein the insulating flame-retardant layer is prepared from the insulating flame-retardant fire-extinguishing material according to claim 1 or 2.
5. The method for preparing the insulating flame-retardant fire-extinguishing patch as claimed in claim 4, which is characterized by comprising the following steps:
uniformly mixing the components of the insulating flame-retardant fire-extinguishing material according to a formula to prepare an insulating flame-retardant layer;
Coating glue on one side of the insulating flame-retardant layer to prepare a glue layer;
and sticking a release film on the adhesive layer to serve as a bottom film.
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| CN202411510067.XA CN119386423A (en) | 2024-10-28 | 2024-10-28 | Insulating flame-retardant automatic fire-extinguishing patch and preparation method thereof |
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| CN202411510067.XA CN119386423A (en) | 2024-10-28 | 2024-10-28 | Insulating flame-retardant automatic fire-extinguishing patch and preparation method thereof |
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