Safe lead for fireworks and crackers

Abstract

The invention provides a safe lead for fireworks and crackers. The lead wire is composed of a lead wire body and a protection structure, and the lead wire body is various conventional lead wires. The protection structure is divided into four layers, namely a flame-retardant layer, a heat insulation layer, a water repellent layer and an anti-static coating. The flame-retardant layer is composed of one or more of alumina fiber, magnesium hydroxide, aluminum hydroxide, zinc borate, ammonium polyphosphate, tricresyl phosphate and phenolic resin; the water repellent layer is composed of one or more of organic silicon resin, perfluorooctanoic acid or ammonium salt thereof, fluorocarbon and paraffin; the anti-static coating is composed of one or more materials of polyvinyl chloride, nylon and silica gel. According to the safe lead for the fireworks and the crackers, through single-layer or multi-layer protection and special materials, the safety performance of the fireworks and the crackers is remarkably improved, the accident risk is reduced, and meanwhile good environmental adaptability and operation convenience are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of fireworks and firecrackers, and in particular to a safe fuse for fireworks and firecrackers. Background Art

[0002] With the development of society and the improvement of people's living standards, fireworks and firecrackers are becoming more and more widely used as a traditional way to celebrate festivals and important events. However, the safety of fireworks and firecrackers has always been a topic of great concern. Due to the lack of effective protection measures, the fuses of traditional fireworks and firecrackers are easily affected by the external environment, such as moisture and static electricity, which can cause the fuses to ignite prematurely or fail to ignite, thus causing safety accidents.

[0003] In order to improve the safety of fireworks and firecrackers, various types of fuse protection structures have appeared on the market. These protection structures usually include flame retardant layers, heat insulation layers, etc. to reduce the risks of fuses during ignition. However, existing protection structures often only focus on one aspect, such as flame retardancy or heat insulation, while ignoring other potential safety risks, such as the impact of humid environments on fuses and the interference of static electricity on the fuse ignition process.

[0004] In addition, the existing lead protection structure is mostly made of a single material, lacking comprehensive performance, and unable to simultaneously meet the requirements of multiple functions such as flame retardancy, heat insulation, water repellency and anti-static. This leads to the lead still having safety hazards in actual use, and cannot fully guarantee the safety of users.

[0005] Therefore, it is necessary to develop a new type of fuse for fireworks and firecrackers, whose protective structure can comprehensively consider multiple functions such as flame retardancy, heat insulation, water repellency and anti-static to improve the safety of the fuse. Summary of the invention

[0006] The purpose of the present invention is to provide a safe fuse for fireworks and firecrackers, which can effectively improve the safety of the fuse and reduce the risk of fire caused by the fuse through the design of a multi-layer protection structure.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions: A safe fuse for fireworks and firecrackers, comprising a fuse body and a protective structure, wherein the protective structure is divided into four layers, namely a flame retardant layer, a heat insulation layer, a water repellent layer and an antistatic coating, wherein the flame retardant layer is located at the innermost layer, the heat insulation layer is located at the outer layer of the flame retardant layer, the water repellent layer is located at the outer layer of the heat insulation layer, and the antistatic coating is located at the outer layer of the water repellent layer; The material used for the flame retardant layer of the protective structure is one or more of alumina fiber, magnesium hydroxide, aluminum hydroxide, zinc borate, ammonium polyphosphate, tricresyl phosphate, tricresyl phosphate, and phenolic resin; the material used for the water-repellent layer of the protective structure is one or more of silicone resin, perfluorooctanoic acid or its ammonium salt, fluorocarbon compounds, and paraffin; the material used for the antistatic coating of the protective structure is one or more of polyvinyl chloride, nylon, and silica gel.

[0008] Further, the protective structure is assembled as follows: 1) Evenly apply a layer of melted flame retardant material on the lead body and dry it at 50℃~60℃ for 2~4h until the flame retardant material is completely cured; 2) Cut the thermal insulation material into strips with a width of 0.05-0.08 mm and evenly wind them on the outer surface of the cured flame retardant layer in a spiral manner; 3) Apply a layer of waterproof material on the outer surface of the thermal insulation layer, then apply antistatic material twice, mechanically pressurize to assist bonding, and finally heat treat the protective structure at 50-60°C for 1-2 hours to obtain the finished product after it is formed; Furthermore, the protection structure is cylindrical, with a cavity inside, and the lead wire is sleeved in the middle of the protection structure.

[0009] Furthermore, the total thickness of the protection structure is determined according to the diameter of the lead body and usage requirements, and is 0.5-1 cm.

[0010] Through the above technical solution, the fuse for fireworks and firecrackers provided by the present invention has better safety, can effectively reduce the risk of fire caused by the fuse, has a wide range of application prospects, and has the following significant beneficial effects compared with the existing fuse for fireworks and firecrackers: The fuse of this invention adopts a multi-layer protection structure, including a flame retardant layer, a heat insulation layer, a water-repellent layer and an anti-static coating, which makes the fuse have multiple protection functions. Among them, the flame retardant layer is composed of high-efficiency flame retardant materials such as alumina fiber, magnesium hydroxide, aluminum hydroxide, zinc borate, ammonium polyphosphate, tricresyl phosphate, phenolic resin, etc., which can quickly suppress the spread of fire after the fuse is ignited, greatly reducing the risk of fire. The heat insulation layer uses high temperature resistant materials to effectively prevent heat from being transferred to the main body of the firework, ensuring the safety of the user. The water-repellent layer is composed of silicone resin, perfluorooctanoic acid or its ammonium salt, fluorocarbon compounds, paraffin and other materials, which makes the fuse have good waterproof properties and can maintain stable combustion even in humid environments. The anti-static coating can effectively eliminate static electricity accumulation and avoid accidents caused by static electricity.

[0011] Secondly, the assembly method of the protective structure is scientific and reasonable. By precisely controlling the coating and drying process, each layer of material can be fully cured and tightly fitted to form a solid and continuous protective shell. This assembly method not only improves the overall strength of the lead, but also makes it more durable, less prone to damage, and extends its service life.

[0012] Thirdly, the design of the protective structure takes into account the convenience of actual use. It is cylindrical with a cavity inside, and the lead can be easily inserted into it, which is not only easy to install, but also reduces the risk of the lead being exposed. At the same time, the total thickness of the protective structure can be adjusted according to the diameter of the lead body and the use requirements, which is highly flexible and adaptable.

[0013] Finally, the fuse of this invention has a significant improvement in safety. Due to its unique multi-layer protection design, it has made a qualitative leap compared to traditional fuses in terms of preventing flame spread, reducing heat transfer, and preventing moisture and static electricity. This undoubtedly greatly improves the safety of fireworks and firecrackers, and is of great significance for protecting the lives and property of the public.

[0014] To sum up, the fireworks fuse of this invention performs excellently in fire prevention, heat resistance, water resistance, anti-static and other aspects, has advanced assembly technology and humanized structural design. Compared with the existing technology, it has significant advantages and practicality, and is expected to be widely used in the fireworks industry and bring significant social and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the patent of this invention; Figure 2 It is a cross-sectional view of the patent of the present invention; Figure 3 It is a cross-sectional view of the protection structure of the patent of this invention.

[0016] In the figure: 1. lead; 2. protective structure; 21. flame retardant layer; 22. heat insulation layer; 23. water repellent layer; 24. antistatic coating. DETAILED DESCRIPTION Example

[0017] A safe fuse for fireworks and firecrackers, including a fuse body and a protective structure. The protective structure is divided into four layers, namely a flame retardant layer, a heat insulation layer, a water repellent layer and an antistatic coating. The flame retardant layer is located in the innermost layer, the heat insulation layer is located in the outer layer of the flame retardant layer, the water repellent layer is located in the outer layer of the heat insulation layer, and the antistatic coating is located in the outer layer of the water repellent layer. The flame retardant layer material of the protective structure is made of alumina fiber and phenolic resin. The heat insulation layer material of the protective structure is made of aluminum silicate fiber. The water repellent layer material of the protective structure is made of silicone resin. The antistatic coating material is made of polyvinyl chloride. The protective structure is assembled as follows: A layer of melted flame retardant material is evenly coated on the lead body, and dried at 50°C for 2 hours until the flame retardant material is completely cured; the thermal insulation material is cut into strips with a width of 0.05 mm, and is evenly wound on the outer surface of the cured flame retardant layer in a spiral manner; a layer of waterproof material is coated on the outer surface of the thermal insulation layer, and antistatic material is coated twice, mechanical pressure is applied to assist bonding, and finally the protective structure is heat treated at 60°C for 1 hour, and the finished product is obtained after it is formed. Example

[0018] A safe fuse for fireworks and firecrackers, including a fuse body and a protective structure. The protective structure is divided into four layers, namely a flame retardant layer, a heat insulation layer, a water repellent layer and an antistatic coating. The flame retardant layer is located in the innermost layer, the heat insulation layer is located in the outer layer of the flame retardant layer, the water repellent layer is located in the outer layer of the heat insulation layer, and the antistatic coating is located in the outer layer of the water repellent layer. The flame retardant layer material of the protective structure is magnesium hydroxide and aluminum hydroxide. The heat insulation layer material of the protective structure is aluminum silicate fiber. The water repellent layer material of the protective structure is silicone resin. The antistatic coating material is silica gel. The assembly method of the protective structure is as follows: A layer of melted flame retardant material is evenly coated on the lead body, and dried at 60°C for 1.5 hours until the flame retardant material is completely cured; the thermal insulation material is cut into strips with a width of 0.05 mm, and is evenly wound on the outer surface of the cured flame retardant layer in a spiral manner; a layer of waterproof material is coated on the outer surface of the thermal insulation layer, and antistatic material is coated twice, mechanical pressure is applied to assist bonding, and finally the protective structure is heat treated at 60°C for 1.5 hours, and the finished product is obtained after it is formed. Example

[0019] A safe fuse for fireworks and firecrackers, including a fuse body and a protective structure. The protective structure is divided into four layers, namely a flame retardant layer, a heat insulation layer, a water repellent layer and an antistatic coating. The flame retardant layer is located in the innermost layer, the heat insulation layer is located in the outer layer of the flame retardant layer, the water repellent layer is located in the outer layer of the heat insulation layer, and the antistatic coating is located in the outer layer of the water repellent layer. The flame retardant layer material of the protective structure is zinc borate and phenolic resin. The heat insulation layer material of the protective structure is aluminum silicate fiber. The water repellent layer material of the protective structure is silicone resin. The antistatic coating material is silica gel. The protective structure is assembled as follows: A layer of melted flame retardant material is evenly coated on the lead body, and dried at 60°C for 2 hours until the flame retardant material is completely cured; the thermal insulation material is cut into strips with a width of 0.05 mm, and is evenly wound on the outer surface of the cured flame retardant layer in a spiral manner; a layer of waterproof material is coated on the outer surface of the thermal insulation layer, and antistatic material is coated twice, mechanical pressure is applied to assist bonding, and finally the protective structure is heat treated at 60°C for 1 hour, and the finished product is obtained after it is formed.

[0020] Ordinary leads without protection structure sold on the market.

[0021] According to the standard requirements of GB19595-2004 "Fireworks and Firecrackers Fuze", the fuses obtained in the above Examples 1-3 and Comparative Example 1 were tested for performance, including moisture absorption, moisture content, and flammability. Ten fuses were taken for each test example, and the test results are shown in Table 1.

[0022] Table 1: Performance Test

[0023] The experimental results show that the leads prepared in Examples 1-3 have excellent performance in terms of moisture absorption rate and moisture content. Their moisture absorption rates are all below 0.05%, and the moisture content is controlled below 0.5%. This data is significantly lower than that of Comparative Example 1, which shows that the protective measures of the present invention have achieved significant results in reducing the moisture absorption of the leads and maintaining dryness.

[0024] Furthermore, in the combustibility test, the fuses of Examples 1-3 showed extremely high safety performance. During the combustion process, all the fuses tested did not experience dangerous situations such as flameout, flame penetration, sudden fire, deflagration or rapid combustion, which fully proved that these fuses have good flame retardant properties and can maintain stable performance in high temperature environments, greatly reducing the risk of fire. Compared with the comparative example, one of the 10 fuses tested experienced flameout, which means that under certain conditions, this fuse may not be able to maintain a normal ignition effect and may even pose a safety hazard.

[0025] In summary, the leads of Examples 1-3 are significantly superior to those of Comparative Example 1 in terms of moisture absorption rate and moisture content control as well as combustion safety, thereby verifying the effectiveness of the improved method of the present invention.

[0026] In addition, the applicant also conducted a thermal stability test on Examples 1-3 and Comparative Example 1. The specific operation was as follows: 10 fuses were taken from each test example and placed in a constant temperature box at a temperature of 75°C ± 2°C for 48 hours to observe whether there was spontaneous combustion and the effect. The test results are as follows: Figure 2 As shown:

[0027] The test results of Examples 1-3 show that, under the specified test conditions, none of the fuses showed spontaneous combustion or non-combustion. This result shows that these fuses have good stability and safety in high temperature environments. However, the results of Comparative Example 1 show a different trend. In this group of tests, 1 out of 10 fuses showed spontaneous combustion.

[0028] In summary, all the fuses in Examples 1-3 showed extremely high stability and safety. When exposed to high temperature for a long time, none of these fuses showed any spontaneous combustion or non-combustion phenomenon. This shows that they have excellent heat resistance and stable chemical properties, and can maintain their basic functions even under extreme conditions, and will not cause accidental fires, thereby ensuring the safety of users.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A safe fuse for fireworks and firecrackers, comprising a fuse body and a protective structure, wherein the protective structure is divided into four layers, namely a flame retardant layer, a heat insulation layer, a water repellent layer and an antistatic coating, wherein the flame retardant layer is located at the innermost layer, the heat insulation layer is located at the outer layer of the flame retardant layer, the water repellent layer is located at the outer layer of the heat insulation layer, and the antistatic coating is located at the outer layer of the water repellent layer; The material used for the flame retardant layer of the protective structure is one or more of alumina fiber, magnesium hydroxide, aluminum hydroxide, zinc borate, ammonium polyphosphate, tricresyl phosphate, tricresyl phosphate, and phenolic resin; the material used for the water-repellent layer of the protective structure is one or more of silicone resin, perfluorooctanoic acid or its ammonium salt, fluorocarbon compounds, and paraffin; the material used for the antistatic coating of the protective structure is one or more of polyvinyl chloride, nylon, and silica gel.

2. A safe fuse for fireworks and firecrackers according to claim 1, characterized in that: The protective structure is assembled as follows: 1) Evenly apply a layer of melted flame retardant material on the lead body and dry it at 50℃~60℃ for 2~4h until the flame retardant material is completely cured; 2) Cut the thermal insulation material into strips with a width of 0.05-0.08 mm and evenly wind them on the outer surface of the cured flame retardant layer in a spiral manner; 3) Apply a layer of waterproof material on the outer surface of the insulation layer, then apply anti-static material twice, apply mechanical pressure to assist bonding, and finally heat treat the protective structure at 50~60℃ for 1~2h to obtain the finished product after it is formed.

3. A safe fuse for fireworks and firecrackers according to claim 1, characterized in that: The protection structure is cylindrical, with a cavity inside, and the lead wire is sleeved in the middle of the protection structure.

4. A safe fuse for fireworks and firecrackers according to claim 1, characterized in that: The thickness of the protection structure is determined according to the diameter of the lead body and the use requirements, and is 0.5-1 cm.

Images