Gas-generating arc-extinguishing glue and its preparation method and application

Abstract

The invention discloses a gas-generating arc-extinguishing glue and a preparation method and application thereof, wherein the preparation raw materials of the gas-generating arc-extinguishing glue include epoxy resin, curing agent, silicon dioxide, Mg2(OH)2CO3, MgCO3, and Al2(CO3)3, the epoxy resin can isolate oxygen and absorb part of the arc energy, the silicon dioxide can adsorb metal vapor, separate the arc, and reduce the arc temperature by heat conduction, and the thermal decomposition temperature of Mg2(OH)2CO3, MgCO3, and Al2(CO3)3 is distributed in a gradient, so that the gas-generating arc-extinguishing glue can continuously generate CO2 gas in a wider range (200-1200°C), which is helpful to extinguish the arc in the early stage of its formation and effectively prevent the arc from reigniting; in addition, MgO and Al2O3 generated by the decomposition of the three salts have extremely high melting points, thereby effectively inhibiting the combustion phenomenon caused by the arc; MgO and Al2O3 also have excellent electrical insulation and chemical stability, effectively improve the insulation of the residue, and reduce the risk of subsequent arc reignition, so the gas-generating arc-extinguishing glue of the invention has a good arc-extinguishing effect.

Description

Technical Field

[0001] The invention belongs to the field of electronic components, specifically relates to the field of fuses, and more specifically relates to a gas-generating arc-extinguishing glue and a preparation method and application thereof. Background Art

[0002] In the field of electronics, fuses are one of the most widely used electronic components as a protection device for short circuits or overloads. When the current in the circuit exceeds a certain value, the fuse element will melt due to the large amount of heat generated, thus cutting off the circuit. However, when the current carried by the fuse is several times higher than the rated current, the heat generated is enough to vaporize the alloy of the melt, forming a high-density metal vapor at the fuse part, generating an arc under the action of high voltage or high current. The arc temperature can reach thousands of degrees Celsius, and it is also conductive. If the arc continues, it is easy to cause the fuse to rupture or explode, and endanger the surrounding environment.

[0003] Traditional fuses usually use quartz sand silicon dioxide (SiO 2 ) as arc extinguishing material, this method is to use SiO 2 The gaps between particles absorb metal vapor, separate arcs, and extinguish arcs by physical cooling. 2 There is an upper limit to the filling density, and its ability to absorb metal vapor and heat per unit volume is limited, making it difficult to adapt to the increasing miniaturization and micro-miniaturization of electronic components, especially high-voltage and high-current electronic components.

[0004] Gas arc extinguishing is another common method. Sulfur hexafluoride (SF 6 ) is the most widely used arc extinguishing gas at present, with excellent insulation performance and stability. When an arc occurs, SF 6 It can quickly absorb and consume free electrons in the arc, thus achieving effective arc extinguishing. 6 There are also defects, the SOF generated by the arc 2 , SF 4 、SOF 4 、SO 2 F 2 Toxic gases such as HF and HF can cause environmental pollution; when used in circuit protection equipment, special gas storage devices are required, and inspection and maintenance are cumbersome; in addition, SF 6 There are also problems such as high preparation and transportation costs.

[0005] Carbon dioxide (CO 2 ) is another common arc extinguishing gas with good chemical stability. 6 Gas, which is low-cost and more environmentally friendly. 2It can be prepared by thermal decomposition reaction of metal salts such as carbonates, bicarbonates and basic carbonates, which means that such metal salts can be directly used as arc extinguishing gas-producing materials for fuses. For example, patent document CN 207009395U discloses that a calcium carbonate layer is filled around the fuse. At the moment the fuse burns out, the temperature is too high, and the calcium carbonate decomposes into calcium oxide and carbon dioxide under high temperature conditions. The carbon dioxide extinguishes the generated arc. However, this method of directly filling carbonate cannot effectively isolate water and oxygen, thereby affecting the life of the fuse, and the arc extinguishing effect is limited.

[0006] Therefore, there is an urgent need for a gas-generating arc-extinguishing glue and a preparation method and application thereof to solve the deficiencies of the existing technical problems. Summary of the invention

[0007] In view of the above problems, the purpose of the present invention is to provide a gas-generating arc-extinguishing adhesive and a preparation method and application thereof. The gas-generating arc-extinguishing adhesive provided by the present invention synergistically acts through multiple mechanisms (the oxygen isolation and arc energy absorption ability of epoxy resin, the vapor adsorption and heat conduction effect of silica, the continuous gas release of the gradient-distributed gas generating agent, and the flame retardancy and insulation of the decomposition products of the gradient-distributed gas generating agent) to effectively suppress the arc, so that the fuse can be safely disconnected at a higher voltage, and is suitable for various occasions where arc suppression is required.

[0008] To achieve the above objectives, the present invention provides a gas generating arc extinguishing adhesive in the first aspect, the preparation raw materials include epoxy resin, curing agent, silicon dioxide, Mg 2 (OH) 2 CO 3 MgCO 3 、Al 2 (CO 3 ) 3 .

[0009] Compared with the prior art, the present invention uses epoxy resin with excellent electrical insulation performance as the carrier material, which not only strengthens the bonding strength between the gas-generating arc-extinguishing glue and the alloy melt interface, effectively isolates oxygen, prevents the alloy melt from oxidation, and prevents arc generation; and when an arc is generated, the softening and carbonization process of the epoxy resin can absorb part of the arc energy, which helps to extinguish the arc. At the same time, silicon dioxide is used as a solid filler. Silicon dioxide can absorb metal vapor, separate the arc, and reduce the arc temperature by heat conduction. More importantly, the use of Mg 2 (OH) 2 CO 3 MgCO 3 、Al 2 (CO 3 ) 3 As a gas generating agent, Mg 2 (OH) 2 CO 3MgCO 3 、Al 2 (CO 3 ) 3 The thermal decomposition temperature of the arc-extinguishing rubber is distributed in a gradient, which enables the gas-generating arc-extinguishing rubber to continuously produce CO in a wide range (200-1200°C). 2 Gas, which not only helps to extinguish the arc in the early stage of formation, but also effectively prevents the arc from reigniting. 2 (OH) 2 CO 3 MgCO 3 、Al 2 (CO 3 ) 3 MgO and Al produced by decomposition 2 O 3 It has a very high melting point and is flame retardant, which can effectively inhibit the combustion caused by the arc; MgO and Al 2 O 3 It also has excellent electrical insulation and chemical stability. When the arc is extinguished, they are distributed together with silicon dioxide in the residue, which effectively improves the insulation of the residue and reduces the risk of subsequent arc reignition. Therefore, the gas generating arc extinguishing glue provided by the present invention effectively suppresses the arc through multiple mechanisms (the oxygen isolation and arc energy absorption capacity of epoxy resin, the vapor adsorption and heat conduction effect of silicon dioxide, the continuous gas release of the gradient distribution gas generating agent, and the flame retardancy and insulation of the decomposition products of the gradient distribution gas generating agent), so that the fuse can be safely disconnected at a higher voltage, and is suitable for various occasions requiring arc suppression.

[0010] Furthermore, the arc-extinguishing adhesive of the present invention comprises, by weight, 30 to 50 parts of epoxy resin, 3 to 20 parts of curing agent, 5 to 20 parts of silicon dioxide, 5 to 40 parts of Mg 2 (OH) 2 CO 3 、5~40 parts MgCO 3 , 5-40 parts Al 2 (CO 3 ) 3 Specifically, the epoxy resin may be, but not limited to, 30 parts, 35 parts, 40 parts, 45 parts, or 50 parts; the curing agent may be, but not limited to, 3 parts, 5 parts, 8 parts, 10 parts, 11 parts, 15 parts, or 20 parts; the silicon dioxide may be, but not limited to, 5 parts, 8 parts, 10 parts, 11 parts, 13 parts, 15 parts, 18 parts, or 20 parts; the Mg may be, but not limited to, Mg 2 (OH) 2 CO 3Specifically, it can be, but not limited to, 5 parts, 8 parts, 10 parts, 11 parts, 13 parts, 15 parts, 18 parts, 20 parts, 22 parts, 25 parts, 28 parts, 30 parts, 31 parts, 33 parts, 35 parts, 38 parts, 40 parts; MgCO 3 Specifically, it can be, but not limited to, 5, 8, 10, 11, 13, 15, 18, 20, 22, 25, 28, 30, 31, 33, 35, 38, 40 parts; A1 2 (CO 3 ) 3 Specifically, it can be but is not limited to 5, 8, 10, 11, 13, 15, 18, 20, 22, 25, 28, 30, 31, 33, 35, 38, and 40 portions.

[0011] Furthermore, the arc-extinguishing adhesive of the present invention comprises, by weight, 35 to 45 parts of epoxy resin, 3 to 10 parts of curing agent, 5 to 15 parts of silicon dioxide, 5 to 30 parts of Mg 2 (OH) 2 CO 3 、5~30 parts MgCO 3 , 5 to 30 parts Al 2 (CO 3 ) 3 .

[0012] Furthermore, the Mg 2 (OH) 2 CO 3 The particle size is 5 to 150 μm, MgCO 3 The particle size is 5 to 150 μm, Al 2 (CO 3 ) 3 The particle size of the MgO is 5 to 150 μm, and the particle size of the SiO2 is 5 to 150 μm. Specifically, the MgO can be screened through a mesh sieve to obtain the above-mentioned particle size range. 2 (OH) 2 CO 3 MgCO 3 、Al 2 (CO 3 ) 3 . Basic magnesium carbonate [Mg 2 (OH) 2 CO 3 ] has a decomposition temperature of 200-550°C, and its thermal decomposition product is MgO; magnesium carbonate (MgCO 3 ) has a decomposition temperature of about 540°C, and its thermal decomposition product is MgO; aluminum carbonate [Al 2 (CO 3 ) 3The thermal decomposition temperature of ] is 900~1200℃, and its thermal decomposition product is Al 2 O 3 .

[0013] Further, the epoxy resin of the present invention comprises at least one of bisphenol A epoxy resin, butanediol bisglycidyl ether epoxy resin and epoxidized polybutadiene resin. Bisphenol A epoxy resin, butanediol bisglycidyl ether epoxy resin and epoxidized polybutadiene resin are all commercially available.

[0014] Further, the curing agent of the present invention comprises at least one of ethylenediamine, diethylenetriamine, triethylenetetramine, m-phenylenediamine, xylylenediamine, triethanolamine, 4,4'-diaminodiphenylmethane, benzyldimethylamine, maleic anhydride, pyromellitic anhydride and tung oil modified anhydride.

[0015] Accordingly, the second aspect of the present invention further provides a method for preparing a gas-generating arc-extinguishing adhesive, comprising the steps of:

[0016] (1) Epoxy resin, curing agent, silica, Mg 2 (OH) 2 CO 3 MgCO 3 and Al 2 (CO 3 ) 3 Stirring and mixing to obtain a slurry;

[0017] (2) Degassing the slurry.

[0018] Furthermore, the stirring in step (1) of the present invention comprises: stirring at room temperature for 5 to 30 minutes.

[0019] Furthermore, step (2) of the present invention includes degassing the slurry using a degassing machine. Air is often introduced into the raw materials during mixing and stirring to form tiny bubbles. If these bubbles remain in the gas generating arc extinguishing adhesive, they may weaken the mechanical properties of the gas generating arc extinguishing adhesive, affect the insulation and arc extinguishing effect, and even cause partial discharge or insulation breakdown in extreme cases. Therefore, it is necessary to degas the slurry.

[0020] Correspondingly, the third aspect of the present invention also provides an application of a gas-generating arc-extinguishing adhesive in a fuse, wherein the gas-generating arc-extinguishing adhesive as mentioned above or the gas-generating arc-extinguishing adhesive prepared by the preparation method of the gas-generating arc-extinguishing adhesive mentioned above is coated on the alloy melt of the fuse.

[0021] Furthermore, the present invention adopts screen printing, dispensing or brushing to coat the gas-generating arc-extinguishing glue on the alloy melt of the fuse.

[0022] Furthermore, the present invention coats the gas generating arc extinguishing adhesive on the alloy melt of the fuse and then cures it at room temperature to 100° C. for 2 to 48 hours. The curing process causes the gas generating arc extinguishing adhesive to transform from a semi-solid state to a solid state, thereby ensuring that the gas generating arc extinguishing adhesive can be stably and durably coated on the alloy melt of the fuse. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a fusing waveform diagram of a fuse using the gas-generating arc-extinguishing glue of Example 1. DETAILED DESCRIPTION

[0024] In order to better illustrate the purpose, technical solution and beneficial effects of the present invention, the present invention will be further described below in conjunction with specific embodiments and drawings. It should be noted that the following implementation method is a further explanation of the present invention and should not be used as a limitation of the present invention.

[0025] Mg used in the examples and comparative examples 2 (OH) 2 CO 3 The particle size is 40-50 μm, MgCO 3 The particle size is 40-50 μm, Al 2 (CO 3 ) 3 The particle size of the silica is 40 to 50 μm, and the particle size of the silica is 40 to 50 μm.

[0026] Example 1

[0027] This embodiment provides a gas generating arc extinguishing glue, and the raw materials for preparation include 40 parts of bisphenol A epoxy resin E-51, 5 parts of triethylenetetramine, 10 parts of silicon dioxide, 15 parts of Mg 2 (OH) 2 CO 3 、15 parts MgCO 3 , 15 parts Al 2 (CO 3 ) 3 .

[0028] This embodiment provides a method for preparing a gas-generating arc-extinguishing adhesive, which is characterized by comprising the steps of:

[0029] (1) Bisphenol A epoxy resin E-51, triethylenetetramine, silica, Mg 2 (OH) 2 CO 3 MgCO 3 and Al 2 (CO 3 ) 3 Mix and stir at room temperature for 20 min to obtain a slurry;

[0030] (2) Degas the slurry using a degassing machine at 1000 rpm.

[0031] Example 2

[0032] This embodiment provides a gas generating arc extinguishing glue, and the raw materials for preparation include 35 parts of epoxidized polybutadiene resin, 3 parts of diethylenetriamine, 8 parts of silicon dioxide, 19 parts of Mg 2 (OH) 2 CO 3 、23 parts MgCO 3 , 12 parts Al 2 (CO 3 ) 3 .

[0033] This embodiment provides a method for preparing a gas-generating arc-extinguishing adhesive, which is characterized by comprising the steps of:

[0034] (1) Epoxidized polybutadiene resin, diethylenetriamine, silica, Mg 2 (OH) 2 CO 3 MgCO 3 and Al 2 (CO 3 ) 3 Mix and stir at room temperature for 30 min to obtain a slurry;

[0035] (2) Degas the slurry using a degassing machine at 1000 rpm.

[0036] Example 3

[0037] This embodiment provides a gas generating arc extinguishing glue, and the raw materials for preparation include 45 parts of bisphenol A epoxy resin E-51, 10 parts of triethanolamine, 7 parts of silicon dioxide, 10 parts of Mg 2 (OH) 2 CO 3 、10 parts MgCO 3 , 18 parts Al 2 (CO 3 ) 3 .

[0038] This embodiment provides a method for preparing a gas-generating arc-extinguishing adhesive, which is characterized by comprising the steps of:

[0039] (1) Bisphenol A epoxy resin E-51, triethylenetetramine, silica, Mg 2 (OH) 2 CO 3 MgCO 3 and Al 2 (CO3 ) 3 Mix and stir at room temperature for 10 min to obtain a slurry;

[0040] (2) Degas the slurry using a degassing machine at 1000 rpm.

[0041] Example 4

[0042] Example 4 is substantially the same as Example 1, and the difference between Example 4 and Example 1 is that: Mg in Example 4 2 (OH) 2 CO 3 For 20 parts, Al 2 (CO 3 ) 3 For 10 portions.

[0043] Example 5

[0044] Example 5 is substantially the same as Example 1, and the difference between Example 5 and Example 1 is that: Mg in Example 5 2 (OH) 2 CO 3 For 25 parts, Al 2 (CO 3 ) 3 For 5 servings.

[0045] Example 6

[0046] Example 6 is basically the same as Example 1. The only difference between Example 6 and Example 1 is that: in Example 6, MgCO 3 For 20 parts, Al 2 (CO 3 ) 3 For 10 portions.

[0047] Example 7

[0048] Example 7 is basically the same as Example 1. The only difference between Example 7 and Example 1 is that: in Example 7, MgCO 3 For 25 parts, Al 2 (CO 3 ) 3 For 5 servings.

[0049] Example 8

[0050] Example 8 is basically the same as Example 1. The only difference between Example 8 and Example 1 is that: in Example 8, MgCO 3 For 10 parts, Al 2 (CO 3 ) 3 For 20 servings.

[0051] Example 9

[0052] Example 9 is basically the same as Example 1. The only difference between Example 9 and Example 1 is that: in Example 9, MgCO 3 For 5 parts, Al 2 (CO 3 ) 3 For 25 servings.

[0053] Example 10

[0054] Example 10 is substantially the same as Example 1, and the difference between Example 10 and Example 1 is that: Mg in Example 10 2 (OH) 2 CO 3 20 parts, MgCO 3 For 10 portions.

[0055] Embodiment 11

[0056] Example 11 is substantially the same as Example 1, and the difference between Example 11 and Example 1 is that: Mg in Example 11 2 (OH) 2 CO 3 25 parts, MgCO 3 For 5 servings.

[0057] Example 12

[0058] Example 12 is substantially the same as Example 1, and the difference between Example 12 and Example 1 is that: Mg in Example 12 2 (OH) 2 CO 3 For 10 parts, Al 2 (CO 3 ) 3 For 20 servings.

[0059] Embodiment 13

[0060] Example 13 is substantially the same as Example 1, and the difference between Example 13 and Example 1 is that: Mg in Example 13 2 (OH) 2 CO 3 For 5 parts, Al 2 (CO 3 ) 3 For 25 servings.

[0061] Embodiment 14

[0062] Example 14 is substantially the same as Example 1, and the difference between Example 14 and Example 1 is that: Mg in Example 14 2 (OH) 2 CO 310 parts, MgCO 3 For 20 servings.

[0063] Embodiment 15

[0064] Example 15 is substantially the same as Example 1, and the difference between Example 15 and Example 1 is that: Mg in Example 15 2 (OH) 2 CO 3 5 parts, MgCO 3 For 25 servings.

[0065] Comparative Example 1

[0066] Comparative Example 1 is substantially the same as Example 1, and the difference between Comparative Example 1 and Example 1 is that: Mg in Comparative Example 1 2 (OH) 2 CO 3 0 parts, MgCO 3 0 parts, Al 2 (CO 3 ) 3 There are 0 copies.

[0067] Comparative Example 2

[0068] This comparative example provides a gas-generating arc-extinguishing powder, and the raw materials for preparation include 55 parts of silicon dioxide, 15 parts of Mg 2 (OH) 2 CO 3 、15 parts MgCO 3 , 15 parts Al 2 (CO 3 ) 3 .

[0069] This comparative example provides a method for preparing gas-generating arc-extinguishing powder, which is characterized by comprising the steps of:

[0070] Silicon dioxide, Mg 2 (OH) 2 CO 3 MgCO 3 and Al 2 (CO 3 ) 3 Mix and stir at room temperature for 20 minutes to obtain gas-generating arc-extinguishing powder.

[0071] Comparative Example 3

[0072] Comparative Example 3 is substantially the same as Example 1, except that: 2 (OH) 2 CO 3 0 parts, MgCO 322.5 parts, Al 2 (CO 3 ) 3 For 22.5 parts.

[0073] Comparative Example 4

[0074] Comparative Example 4 is substantially the same as Example 1, except that: 2 (OH) 2 CO 3 22.5 parts, MgCO 3 22.5 parts, Al 2 (CO 3 ) 3 There are 0 copies.

[0075] Comparative Example 5

[0076] Comparative Example 5 is substantially the same as Example 1, except that: 2 (OH) 2 CO 3 22.5 parts, MgCO 3 0 parts, Al 2 (CO 3 ) 3 For 22.5 parts.

[0077] Comparative Example 6

[0078] Comparative Example 6 is substantially the same as Example 1, and the only difference between Comparative Example 6 and Example 1 is that the amount of silicon dioxide in Comparative Example 6 is 0 parts.

[0079] The gas-generating arc-extinguishing glue prepared in Examples 1 to 15, Comparative Example 1, and Comparative Examples 3 to 6 are loaded into a syringe matched with a glue dispensing machine, and poured into the fuse using the glue dispensing machine so that the gas-generating arc-extinguishing glue is coated on the alloy melt of the fuse, and then cured at room temperature for 24 hours; the gas-generating arc-extinguishing powder prepared in Comparative Example 2 is poured into the fuse so that the gas-generating arc-extinguishing powder is coated on the alloy melt of the fuse; the rated voltage of the fuse is 150VDC, and the rated current is 200A.

[0080] The above fuses were tested for insulation resistance and arc suppression performance according to standards GB / T31465-2015 and GB / T31465-2017. The test instruments were a short-circuit test platform (DL10KV-100), a megohmmeter (AR3127), a DC programmable power supply (IT6932A) and a 6.5-digit multimeter (34401A); the test environment temperature was 20.7°C and the humidity was 46% RH. The fusing waveform of the fuse using the gas-generating arc-extinguishing glue of Example 1 is shown in the figure below. Figure 1As shown; the insulation resistance and arc suppression performance test results of the fuses of Examples 1 to 15 and Comparative Examples 1 to 6 are shown in Table 1.

[0081] Table 1

[0082]

[0083]

[0084] Depend on Figure 1 As can be seen from Table 1, compared with Comparative Examples 1 to 6, the gas-generating arc-extinguishing adhesives of Examples 1 to 15 can effectively suppress the arc, which indicates that the gas-generating arc-extinguishing adhesive provided by the present invention can effectively suppress the arc through the synergistic effect of multiple mechanisms (the oxygen isolation and arc energy absorption capacity of the epoxy resin, the vapor adsorption and heat conduction effect of silica, the continuous gas release of the gradient-distributed gas generating agent, and the flame retardancy and insulation of the decomposition products of the gradient-distributed gas generating agent), so that the fuse can be safely disconnected at a higher voltage, and is suitable for various occasions requiring arc suppression.

[0085] By comparing Example 1 with Comparative Example 1 and Comparative Examples 3 to 5, it can be seen that Mg 2 (OH) 2 CO 3 MgCO 3 、Al 2 (CO 3 ) 3 Any one of them is indispensable in the arc extinguishing mechanism. Removing any one of them will affect the thermal decomposition temperature gradient distribution of the gas generator. That is, the lack of any one of them means that the gas generation in a certain temperature range is reduced, and carbon dioxide cannot be continuously generated, thus affecting the arc extinguishing effect. This shows that Mg 2 (OH) 2 CO 3 MgCO 3 、Al 2 (CO 3 ) 3 The three work together, and each salt releases CO at its own unique thermal decomposition temperature. 2 Gas can ensure that there is enough gas to extinguish the arc in the entire temperature range (200-1200°C). In addition, since the decomposition products of the three salts are also flame retardant and electrically insulating, the lack of any one of the salts will also make it impossible to effectively suppress the arc re-ignition, increasing the risk of arc re-ignition.

[0086] Comparing Example 1 with Comparative Example 2, it can be seen that Mg 2 (OH) 2 CO 3 MgCO 3 、Al 2 (CO 3) 3 , simply mixing silicon dioxide into powder and using it directly as an arc extinguishing material cannot achieve a good arc extinguishing effect. This is because there are gaps between the particles of the arc extinguishing powder, and the overall structure is relatively loose and has a certain fluidity. It cannot firmly adhere to the surface of the alloy melt, and the reaction to the arc is slow, which is not conducive to arc extinguishing. The arc extinguishing glue firmly adheres to the surface of the alloy melt, and there are fewer gaps between it and the melt. It can react to the temperature changes of the melt more promptly and extinguish the arc more quickly. In addition, the arc extinguishing powder cannot effectively isolate oxygen and water, which seriously affects the arc extinguishing effect. This is because under the high temperature of the arc, oxygen will intensify the chemical reaction process of the arc, making the arc more difficult to extinguish, and moisture will significantly increase the conductivity of the arc extinguishing area, making it easier for the arc to form; while the epoxy resin in the gas-generating arc extinguishing glue can effectively isolate water and oxygen and thus improve the arc extinguishing effect.

[0087] Comparing Example 1 with Comparative Example 6, it can be seen that although silicon dioxide is not directly used as a gas generating agent, it has a significant effect on the arc extinguishing effect. This is because silicon dioxide has the function of absorbing metal vapor, separating the arc, and reducing the arc temperature by heat conduction. At the same time, silicon dioxide can also react with MgO and Al 2 O 3 They are distributed together in the residue, effectively improving the insulation of the residue, which can also reduce the risk of subsequent arc reignition. Therefore, removing silica will lead to a worse arc extinguishing effect, such as the arc is difficult to extinguish quickly.

[0088] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit the scope of protection of the present invention. Although the present invention is described in detail with reference to the preferred embodiments, it is not limited to those listed in the embodiments. Those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A gas generating arc extinguishing glue, characterized in that: In terms of mass, the raw materials include 30 to 50 parts of epoxy resin, 3 to 20 parts of curing agent, 5 to 20 parts of silicon dioxide, 5 to 40 parts of Mg2(OH)2CO3, 5 to 40 parts of MgCO3, and 5 to 40 parts of Al2(CO3)3.

2. The gas generating arc extinguishing glue according to claim 1, characterized in that: In terms of mass, the raw materials for preparation include 35 to 45 parts of epoxy resin, 3 to 10 parts of curing agent, 5 to 15 parts of silicon dioxide, 5 to 30 parts of Mg2(OH)2CO3, 5 to 30 parts of MgCO3, and 5 to 30 parts of Al2(CO3)3.

3. The gas generating arc extinguishing rubber according to claim 1, characterized in that: The particle size of the Mg2(OH)2CO3 is 5 to 150 μm, the particle size of the MgCO3 is 5 to 150 μm, the particle size of the Al2(CO3)3 is 5 to 150 μm, and the particle size of the silicon dioxide is 5 to 150 μm.

4. The gas generating arc extinguishing glue according to claim 1, characterized in that: The epoxy resin includes at least one of bisphenol A epoxy resin, butanediol bisglycidyl ether epoxy resin and epoxidized polybutadiene resin.

5. The arc-extinguishing rubber according to claim 1, characterized in that: The curing agent includes at least one of ethylenediamine, diethylenetriamine, triethylenetetramine, m-phenylenediamine, xylylenediamine, triethanolamine, 4,4'-diaminodiphenylmethane, benzyldimethylamine, maleic anhydride, pyromellitic anhydride and tung oil modified anhydride.

6. The method for preparing the gas generating arc extinguishing rubber according to any one of claims 1 to 5, characterized in that: Includes steps: (1) mixing epoxy resin, curing agent, silicon dioxide, Mg2(OH)2CO3, MgCO3 and Al2(CO3)3 to obtain a slurry; (2) Degassing the slurry.

7. The method for preparing the gas generating arc extinguishing rubber according to claim 6, characterized in that: The stirring in step (1) includes: stirring at room temperature for 5 to 30 minutes.

8. An application of a gas-generating arc-extinguishing glue in a fuse, characterized in that: The gas generating arc extinguishing adhesive prepared by the preparation method of the gas generating arc extinguishing adhesive as claimed in any one of claims 1 to 5 or the gas generating arc extinguishing adhesive as claimed in any one of claims 6 to 7 is coated on the alloy melt of the fuse.

9. The use of the gas generating arc extinguishing glue in a fuse as claimed in claim 8, characterized in that: The gas-generating arc-extinguishing glue is coated on the alloy melt of the fuse by adopting a screen printing method, a dispensing method or a brush coating method.

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