Aerosol medicament and preparation process thereof

Abstract

The invention discloses an aerosol medicament and a preparation process thereof, the aerosol medicament comprises the following raw materials by weight: 70-80% of an adhesive, 10-25% of melamine and 5-15% of ammonium nitrate, and the invention relates to the technical field of fire extinguishing aerosol medicament preparation. According to the aerosol medicament and the preparation process thereof, after the fineness of the three materials reaches the same mesh number and is uniform, the aerosol can react more sufficiently and release more gas through the fineness table, so that the fire extinguishing effect is improved, and various medicaments of the aerosol can be adhered more uniformly by increasing the proportion of the adhesive. And by setting the force and angle during stirring and extrusion, the bonding strength of all components of the aerosol is improved, and therefore the fire extinguishing effect is enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of fire extinguishing aerosol agent preparation, and particularly to an aerosol agent and its preparation process. Background Art

[0002] As a substitute for Halon fire extinguishing products, aerosol fire extinguishing technology has the advantages of good fire extinguishing performance and no secondary pollution, and has been widely used at home and abroad. Existing aerosol fire extinguishing products all use aerosol fire extinguishing agents as fire extinguishing media.

[0003] At present, hot aerosol fire extinguishing agents have been widely studied and applied due to their high fire extinguishing efficiency, non-toxicity, no damage to the ozone layer, and storage under normal pressure. Hot aerosol fire extinguishing agents mainly rely on the principle of chemical inhibition to extinguish fires. The solid particles in their components can break down into metal ions that can consume free radicals (such as H, ·HO·, and O·) in the combustion reaction intermediates, playing a role in blocking combustion and suppressing fires. At the same time, the gas components in hot aerosol fire extinguishing agents can also play a certain role in suppressing fires by diluting the concentrations of combustible gases and oxygen in the protected space. Most existing hot aerosol fire extinguishing agents use the method of filling the entire protected space with aerosol to suppress fires, and this fire extinguishing method is called total flooding. The total flooding fire extinguishing application range of hot aerosol is very wide, and currently it has covered places such as aircraft fuel tanks, ship engines, archives, libraries, cargo control rooms, petroleum product storage tanks, liquefied gas storage tanks, distribution rooms, and generator rooms. In addition, some aerosol fire extinguishing devices also consider the combined application of fixed-point fire extinguishing and total flooding during installation, but due to the limitations of single agents, they all show limited fire extinguishing capabilities.

[0004] The existing preparation process of aerosol agents is as follows: the fineness of the agent oxidant is 100 mesh, and the fineness of the combustible agent is 200 mesh. When the two materials are mixed, due to different specific gravities and finenesses, they will be unevenly mixed, resulting in poor fire extinguishing gas effects and too little gas generation during chemical reactions. The fire extinguishing effect is too poor. Currently, the intensity of stirring and extrusion of the aerosol is insufficient, resulting in poor effects, and the components are loose among each other. Summary of the Invention

[0005] (I) Technical Problems to be Solved

[0006] In view of the deficiencies of the prior art, the present invention provides an aerosol agent and its preparation process, which solve the problems that when existing materials are mixed, due to different specific gravities and finenesses, they will be unevenly mixed, resulting in poor fire extinguishing gas effects and too little gas generation during chemical reactions. The fire extinguishing effect is too poor. Currently, the intensity of stirring and extrusion of the aerosol is insufficient, resulting in poor effects, and the components are loose among each other.

[0007] (2) Technical Solution

[0008] To achieve the above object, the present invention is realized through the following technical solutions: An aerosol agent, the raw materials of which include, by weight percentage: 70-80% of an adhesive, 10-25% of melamine, and 5-15% of ammonium nitrate.

[0009] Preferably, the raw materials include, by weight percentage: 75% of an adhesive, 15% of melamine, and 10% of ammonium nitrate.

[0010] Preferably, the raw materials include, by weight percentage: 70% of an adhesive, 15% of melamine, and 15% of ammonium nitrate.

[0011] Preferably, the raw materials include, by weight percentage: 80% of an adhesive, 10% of melamine, and 10% of ammonium nitrate.

[0012] Preferably, the adhesive is phenolic resin.

[0013] The present invention also provides a preparation process for an aerosol agent, which specifically includes the following steps:

[0014] S1. Weigh the required weight percentages of phenolic resin, melamine, and ammonium nitrate respectively by a weighing device for later use;

[0015] S2. Grind the phenolic resin, melamine, and ammonium nitrate in step S1 respectively by a grinding device and sieve them through a 50-200 mesh sieve to obtain phenolic resin powder, melamine powder, and ammonium nitrate powder;

[0016] S3. Mix the phenolic resin powder, melamine powder, and ammonium nitrate powder obtained in step S2 in a screening device and simultaneously sieve them through a 50-200 mesh sieve. After repeating 3-6 times, the preliminary mixing and screening of the raw materials are completed;

[0017] S4. Pour the phenolic resin powder, melamine powder, and ammonium nitrate powder after the preliminary mixing and screening in step S3 into a mixing and stirring device in sequence and remix them for 10-20 minutes under the condition of a rotation speed of 200-300 r / min;

[0018] S5. After stirring and mixing in step S4, transfer it to a pressure device, pressurize it to 0.2-0.3 Mpa and extrude it for 2-4 minutes, then transfer it to a mixing device and disperse and mix it for 10-20 minutes under the condition of a rotation speed of 200-300 r / min;

[0019] S6. Repeat steps 2-4 times of step S5, then the aerosol agent is prepared. After passing the quality inspection, it is subjected to packaging treatment.

[0020] Preferably, in step S5, the pressure is applied to make the density of the mixed powder 42-46 g / m 3 .

[0021] Preferably, the specific steps of grinding, screening and mixing in steps S2 and S3 are as follows:

[0022] T1. First, transfer the phenolic resin to a grinding device and grind it thoroughly through a grinding roller, then transfer it to a vibrating screening device equipped with a 50-200 mesh sieve for screening treatment, collect the screened phenolic resin powder, and then collect the un-screened phenolic resin particles separately for later use;

[0023] T2. Similarly, transfer melamine and ammonium nitrate to a grinding device respectively and grind them thoroughly through a grinding roller, then transfer them to a vibrating screening device equipped with a 50-200 mesh sieve for screening treatment, collect the screened phenolic resin powder, and then collect the un-screened melamine particles and ammonium nitrate particles separately for later use;

[0024] T3. Grind the phenolic resin particles, melamine particles and ammonium nitrate particles collected in step T1 and step T2 again through a grinding device until all pass through a 50-200 mesh sieve;

[0025] T4. Mix and vibrate and screen the powders after the second grinding and screening in step T3 with the phenolic resin powder in step T1, the melamine powder in step T2 and the ammonium nitrate powder in a vibrating screening device, and repeat 3-6 times to complete the simultaneous screening and mixing of the phenolic resin powder, melamine powder and ammonium nitrate powder.

[0026] (III) Beneficial effects

[0027] The present invention provides an aerosol agent and its preparation process. Compared with the prior art, it has the following beneficial effects: for the aerosol agent and its preparation process, its raw materials include, by weight percentage: 70-80% of an adhesive, 10-25% of melamine and 5-15% of ammonium nitrate. By making the fineness of the three materials reach the same mesh number and being uniform in fineness, when the aerosol reacts, it is more sufficient, releases more gas, thereby increasing the fire extinguishing effect. By increasing the proportion of the adhesive, the various agents of the aerosol are bonded more evenly, thereby improving the fire extinguishing effect. By setting the strength and angle during stirring and extrusion, the bonding strength of the components of the aerosol is increased, thereby enhancing the fire extinguishing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a flowchart of the preparation process of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0030] Please refer to Figure 1 , the embodiments of the present invention provide three technical solutions: an aerosol agent and its preparation process, specifically including the following embodiments:

[0031] Embodiment 1: An aerosol agent, the raw materials of which include, by weight percentage: 75% of an adhesive, 15% of melamine, and 10% of ammonium nitrate, and the adhesive is phenolic resin.

[0032] The embodiments of the present invention also provide a preparation process for an aerosol agent, specifically including the following steps:

[0033] S1. Weigh the required weight percentages of phenolic resin, melamine, and ammonium nitrate respectively by weighing equipment for later use;

[0034] S2. Grind the phenolic resin, melamine, and ammonium nitrate in step S1 respectively by a pulverizing and grinding device, and screen them through a 100-mesh sieve to obtain phenolic resin powder, melamine powder, and ammonium nitrate powder;

[0035] S3. Mix the phenolic resin powder, melamine powder, and ammonium nitrate powder obtained in step S2 in a screening device, and simultaneously screen them through a 100-mesh sieve. After repeating 5 times, the preliminary mixing and screening of the raw materials are completed;

[0036] S4. Pour the phenolic resin powder, melamine powder, and ammonium nitrate powder after the preliminary mixing and screening in step S3 into a mixing and stirring device in sequence, and remix them for 15 minutes under the condition of a rotation speed of 250 r / min;

[0037] S5. After stirring and mixing in step S4, transfer it to a pressure device, pressurize it to 0.25 Mpa and extrude for 3 minutes, then transfer it to a mixing device and disperse and mix it for 15 minutes under the condition of a rotation speed of 250 r / min, and pressurize to make the density of the mixed powder 44 g / m 3 ;

[0038] S6. After repeating the steps of step S5 3 times, the aerosol agent is prepared, and after passing the quality inspection, it is subjected to packaging treatment.

[0039] In the embodiments of the present invention, the specific steps of grinding, screening, and mixing in steps S2 and S3 are as follows:

[0040] T1. First, transfer the phenolic resin to a grinding device and grind it thoroughly with grinding rollers, then transfer it to a vibrating screening device equipped with a 100-mesh sieve for screening. Collect the screened phenolic resin powder, and separately collect the unscreened phenolic resin particles for later use.

[0041] T2. Similarly, transfer melamine and ammonium nitrate to a grinding device respectively and grind them thoroughly with grinding rollers, then transfer them to a vibrating screening device equipped with a 100-mesh sieve for screening. Collect the screened phenolic resin powder, and separately collect the unscreened melamine particles and ammonium nitrate particles for later use.

[0042] T3. Re-grind the phenolic resin particles, melamine particles and ammonium nitrate particles collected in step T1 and step T2 through a grinding device until all of them pass through a 100-mesh sieve.

[0043] T4. Mix and vibrate and screen the powders after re-grinding and screening in step T3 with the phenolic resin powder in step T1, the melamine powder and ammonium nitrate powder in step T2 respectively in a vibrating screening device. After repeating 5 times, the screening and mixing of the phenolic resin powder, melamine powder and ammonium nitrate powder are completed simultaneously.

[0044] Example 2: An aerosol agent, the raw materials of which include, by weight percentage: 70% of an adhesive, 15% of melamine and 15% of ammonium nitrate, and the adhesive is phenolic resin.

[0045] The embodiment of the present invention also provides a preparation process of an aerosol agent, which specifically includes the following steps:

[0046] S1. Weigh the required weight percentages of phenolic resin, melamine and ammonium nitrate respectively by a weighing device for later use.

[0047] S2. Grind the phenolic resin, melamine and ammonium nitrate in step S1 respectively through a crushing and grinding device and screen them through a 50-mesh sieve to obtain phenolic resin powder, melamine powder and ammonium nitrate powder.

[0048] S3. Mix the phenolic resin powder, melamine powder and ammonium nitrate powder obtained in step S2 in a screening device and simultaneously screen them with a 50-mesh sieve. After repeating 3 times, the preliminary mixing and screening of the raw materials are completed.

[0049] S4. Pour the phenolic resin powder, melamine powder and ammonium nitrate powder after preliminary mixing and screening in step S3 into a mixing and stirring device in sequence and mix them for another 10 minutes under the condition of a rotation speed of 200 r / min.

[0050] S5. After stirring and mixing in step S4, transfer to a pressure device, pressurize to 0.2Mpa and extrude for 2min, then transfer to a mixing device and mix at a speed of 200r / min for 10min, pressurize to make the density of the mixed powder 42g / m 3 ;

[0051] S6. After repeating step S5 twice, the aerosol medicine is obtained, and the aerosol medicine is packaged after passing the quality inspection.

[0052] In the embodiment of the present invention, the specific steps of grinding, screening and mixing in steps S2 and S3 are as follows:

[0053] T1, first transfer the phenolic resin to a grinding device and grind it fully with a grinding roller, then transfer it to an oscillating screening device equipped with a 50-mesh screen for screening, collect the screened phenolic resin powder, and then collect the unscreened phenolic resin particles separately for standby use;

[0054] T2. Similarly, melamine and ammonium nitrate are also transferred to a grinding device and fully ground by a grinding roller, and then transferred to an oscillating screening device equipped with a 50-mesh screen for screening, and the screened phenolic resin powder is collected, and then the unscreened melamine particles and ammonium nitrate particles are separately collected for standby use;

[0055] T3, the phenolic resin particles, melamine particles and ammonium nitrate particles collected in step T1 and step T2 are fully ground again by a grinding device until all of them pass through a 50-mesh sieve;

[0056] T4, the powder ground and screened again in step T3 is mixed and screened together with the phenolic resin powder in step T1, the melamine powder and the ammonium nitrate powder in step T2 in a shaking screening device. After repeating 3 times, the phenolic resin powder, melamine powder and ammonium nitrate powder are screened and mixed simultaneously.

[0057] Example 3: An aerosol agent, whose raw materials include, by weight percentage, 80% adhesive, 10% melamine and 10% ammonium nitrate, wherein the adhesive is phenolic resin.

[0058] The embodiment of the present invention also provides a process for preparing an aerosol medicament, which specifically comprises the following steps:

[0059] S1, respectively measure the required weight percentage of phenolic resin, melamine and ammonium nitrate by weighing equipment, and set aside;

[0060] S2, grinding the phenolic resin, melamine and ammonium nitrate in step S1 respectively by a crushing and grinding device, and screening through a 200-mesh sieve to obtain phenolic resin powder, melamine powder and ammonium nitrate powder;

[0061] S3, the phenolic resin powder, melamine powder and ammonium nitrate powder obtained in step S2 are mixed in a screening device, and screened with a 200-mesh sieve at the same time, and after repeating 6 times, the initial mixing and screening of the raw materials is completed;

[0062] S4, pouring the phenolic resin powder, melamine powder and ammonium nitrate powder preliminarily mixed and screened in step S3 into a mixing and stirring device in sequence, and mixing for another 20 minutes at a rotation speed of 300 r / min;

[0063] S5. After stirring and mixing in step S4, transfer to a pressure device, pressurize to 0.3Mpa and extrude for 4 minutes, then transfer to a mixing device and mix at a speed of 300r / min for 20 minutes, and pressurize to make the density of the mixed powder 46g / m 3 ;

[0064] S6. After repeating step S5 for 4 times, the aerosol medicine is obtained, and the aerosol medicine is packaged after passing the quality inspection.

[0065] In the embodiment of the present invention, the specific steps of grinding, screening and mixing in steps S2 and S3 are as follows:

[0066] T1, first transfer the phenolic resin to a grinding device and grind it fully with a grinding roller, then transfer it to an oscillating screening device equipped with a 200-mesh screen for screening, collect the screened phenolic resin powder, and then collect the unscreened phenolic resin particles separately for standby use;

[0067] T2. Similarly, melamine and ammonium nitrate are also transferred to a grinding device and fully ground by a grinding roller, and then transferred to an oscillating screening device equipped with a 200-mesh screen for screening, and the screened phenolic resin powder is collected, and then the unscreened melamine particles and ammonium nitrate particles are separately collected for standby use;

[0068] T3, the phenolic resin particles, melamine particles and ammonium nitrate particles collected in step T1 and step T2 are fully ground again by a grinding device until all of them pass through a 200-mesh sieve;

[0069] T4. The powders obtained after re-grinding and screening in step T3 are respectively mixed and shaken and screened in a shaking and screening device together with the phenolic resin powder in step T1, the melamine powder in step T2, and the ammonium nitrate powder. After repeating 6 times, the screening and mixing of the phenolic resin powder, melamine powder, and ammonium nitrate powder are completed simultaneously.

[0070] Comparative experiment:

[0071] Experimental example 1: The phenolic resin, melamine, and ammonium nitrate were respectively ground and screened to 100 meshes, and an aerosol agent with a mass of 50 g / m 3 was made with 1 m 3 as the test model for fire extinguishing, and it took three times to complete the fire extinguishing.

[0072] Experimental example 2: The phenolic resin, melamine, and ammonium nitrate were respectively ground and screened to 100 meshes, and an aerosol agent with a mass of 45 g / m 3 was made with 1 m 3 as the test model for fire extinguishing, and it took one time to complete the fire extinguishing.

[0073] Experimental example 3: The phenolic resin, melamine, and ammonium nitrate were respectively ground and screened to 200 meshes, and an aerosol agent with a mass of 33 g / m 3 was made with 1 m 3 as the test model for fire extinguishing, and it took three times to complete the fire extinguishing.

[0074] Experimental example 4: The phenolic resin, melamine, and ammonium nitrate were respectively ground and screened to 200 meshes, and an aerosol agent with a mass of 30 g / m 3 was made with 1 m 3 as the test model for fire extinguishing, and it took one time to complete the fire extinguishing.

[0075] From the test results of the above experimental examples 1 - 4, it can be seen that when the particle size of the aerosol agent is 200 meshes, the combustion residue is less, the reaction is more sufficient, and the effective fire extinguishing components are greatly increased.

[0076] In summary, in the present invention, by making the fineness of the three materials reach the same mesh number, after the fineness is uniform, through changing the fineness, the reaction of the aerosol is more sufficient when it occurs, and more gas is released, thereby increasing the fire extinguishing effect. By increasing the proportion of the adhesive, the various agents of the aerosol are bonded more uniformly, thereby enhancing the fire extinguishing effect. By setting the force and angle during stirring and extrusion by the device, the bonding strength of the components of the aerosol is increased, thereby enhancing the fire extinguishing effect.

[0077] Meanwhile, the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0078] It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or apparatus comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or apparatus.

[0079] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An aerosol medicament, characterized in that: The raw materials include, by weight percentage, 70-80% of adhesive, 10-25% of melamine and 5-15% of ammonium nitrate.

2. An aerosol medicament according to claim 1, characterized in that: The raw materials include, by weight percentage, 75% adhesive, 15% melamine and 10% ammonium nitrate.

3. An aerosol medicament according to claim 1, characterized in that: The raw materials include, by weight percentage, 70% adhesive, 15% melamine and 15% ammonium nitrate.

4. An aerosol medicament according to claim 1, characterized in that: The raw materials include, by weight percentage, 80% adhesive, 10% melamine and 10% ammonium nitrate.

5. An aerosol medicament according to any one of claims 1 to 4, characterized in that: The adhesive is phenolic resin.

6. A process for preparing the aerosol medicament according to any one of claims 1 to 4, characterized in that: The specific steps include: S1, using a weighing device to measure the required weight percentage of phenolic resin, melamine and ammonium nitrate respectively, and set aside; S2, grinding the phenolic resin, melamine and ammonium nitrate in step S1 respectively by a crushing and grinding device, and screening through a 50-200 mesh sieve to obtain phenolic resin powder, melamine powder and ammonium nitrate powder; S3, the phenolic resin powder, melamine powder and ammonium nitrate powder obtained in step S2 are mixed in a screening device, and screened with a 50-200 mesh sieve at the same time, and repeated 3-6 times to complete the initial mixing and screening of the raw materials; S4, pouring the phenolic resin powder, melamine powder and ammonium nitrate powder preliminarily mixed and screened in step S3 into a mixing and stirring device in sequence, and mixing for another 10-20 minutes at a rotation speed of 200-300 r / min; S5, after stirring and mixing in step S4, transfer to a pressure device, pressurize to 0.2-0.3Mpa and extrude for 2-4min, then transfer to a mixing device and mix at a speed of 200-300r / min for 10-20min; S6. After repeating step S5 2-4 times, the aerosol medicine is obtained, and the aerosol medicine is packaged after passing the quality inspection.

7. The process for preparing an aerosol medicament according to claim 6, characterized in that: In step S5, the density of the mixed powder is 42-46 g / m 3 .

8. The process for preparing an aerosol medicament according to claim 6, characterized in that: The specific steps of grinding, screening and mixing in steps S2 and S3 are as follows: T1, first transfer the phenolic resin to a grinding device and grind it fully with a grinding roller, then transfer it to an oscillating screening device equipped with a 50-200 mesh screen for screening, collect the screened phenolic resin powder, and then collect the unscreened phenolic resin particles separately for standby use; T2. Similarly, melamine and ammonium nitrate are also transferred to a grinding device and fully ground by a grinding roller, and then transferred to an oscillating screening device equipped with a 50-200 mesh screen for screening, and the screened phenolic resin powder is collected, and then the unscreened melamine particles and ammonium nitrate particles are separately collected for standby use; T3, the phenolic resin particles, melamine particles and ammonium nitrate particles collected in step T1 and step T2 are fully ground again by a grinding device until all of them pass through a 50-200 mesh sieve; T4, the powder ground and screened again in step T3 is mixed and screened together with the phenolic resin powder in step T1, the melamine powder and the ammonium nitrate powder in step T2 in a shaking screening device, and after repeating 3-6 times, the phenolic resin powder, melamine powder and ammonium nitrate powder are screened and mixed simultaneously.

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