Production process of efficient fire extinguishing microcapsule product

Abstract

The invention discloses a production process of an efficient fire extinguishing microcapsule product, which specifically comprises the following steps: step 1, adding water into a reaction kettle, adding a PET powder adhesive, stirring, heating, and cooling after the PET powder adhesive is completely dissolved; 2, diatom powder is added and stirred, and when the temperature in the reaction kettle is reduced to 38-40 DEG C, 2-methyl-3-pentanone is added and stirred; 3, injecting nitrogen into the reaction kettle, adding a catalyst at the same time, and continuously stirring for 35-40 minutes; according to the invention, liquid 12fluoro-2-methyl-3-pentanone is wrapped in the microcapsule through a composite technology, through high-temperature triggering, the surface layer of the capsule is broken, effective fire extinguishing components are released, the fire extinguishing efficiency is obviously superior to that of a liquid fire extinguishing agent when the fire extinguishing components are instantaneously erupted under high-temperature triggering, and the diameter of the microcapsule is less than 200 microns; the device can be further developed according to use scenes, can be made into a sheet shape, an adhesive tape shape and the like, and is wide in application scene.

Description

Technical Field

[0001] The invention belongs to the technical field of fire fighting and extinguishing, and in particular relates to a production process of a highly efficient fire extinguishing microcapsule product. Background Art

[0002] Halon refers to a chemical belonging to the group of halogenated hydrocarbons. It can achieve good fire extinguishing effect by capturing free radicals and destroying the flame contact surface, thus interrupting the combustion chain. Halon fire extinguishing agent is widely used in the fire protection industry.

[0003] Currently, 12-fluoro-2-methyl-3-pentanone fire extinguishing agent is an important substitute for halon fire extinguishing agent. It has certain advantages in safety, fire extinguishing effect, environmental protection, etc., but at the same time, its liquid form also causes many restrictions on its storage, transportation and usage scenarios, so there is room for improvement in practical applications. Summary of the invention

[0004] The purpose of the present invention is to provide a production process for an efficient fire extinguishing microcapsule product to solve the problem raised in the above background technology that the current 12-fluoro-2-methyl-3-pentanone fire extinguishing agent liquid form has great limitations in storage, transportation and use.

[0005] To achieve the above object, the present invention provides the following technical solution: a production process of a highly efficient fire extinguishing microcapsule product, specifically comprising the following steps:

[0006] Step 1: Add water into the reactor, add PET powder adhesive, stir and heat, and cool when the PET powder adhesive is completely dissolved;

[0007] Step 2: Add diatom powder and stir. When the temperature in the reactor drops to 38-40°C, add 2-methyl-3-pentanone and stir.

[0008] Step 3: Inject nitrogen into the reactor, add the catalyst and continue stirring for 35 to 40 minutes;

[0009] Step 4: Add silane coupling agent and stir. When the temperature in the reactor drops to 28-30°C and the pH value in the reactor is neutral, continue stirring for 28-30 minutes and put the capsule mixture in the reactor into a container.

[0010] Step 5: Wash the capsules with pure water, spin dry with a centrifuge, dry the capsules in an oven at 42-45°C, and package them.

[0011] As a preferred technical solution of the present invention, in the step 1, the heating temperature is 70-85°C, the stirring speed is 160-180 r / min, and the cooling temperature is 55-60°C.

[0012] As a preferred technical solution of the present invention, in step 2, the time for adding diatom powder is 20 to 30 minutes, the stirring speed is 200 to 250 r / min, and the stirring time is 25 to 30 minutes.

[0013] As a preferred technical solution of the present invention, the stirring speed of adding 2-methyl-3-pentanone in step 2 is 80-100 r / min.

[0014] As a preferred technical solution of the present invention, in step 4, the stirring speed of the silane coupling agent is 120-130 r / min, and the stirring time is 3-3.5 h.

[0015] As a preferred technical solution of the present invention, the raw material ratio in the process is as follows:

[0016] PET powder adhesive 4.5-7%, pure water 43-44.8%, catalyst 1%, diatom powder 7.7%, silane coupling agent 3.3%, 2-methyl-3-pentanone 38-39%.

[0017] As a preferred technical solution of the present invention, the PET powder adhesive comprises 6%, pure water 44%, catalyst 1%, diatom powder 7.7%, silane coupling agent 3.3%, and 2-methyl-3-pentanone 38%.

[0018] As a preferred technical solution in the present invention, the diatom powder has a mesh size of 2900 to 3000.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] In the present invention, liquid 12-fluoro-2-methyl-3-pentanone is encapsulated in microcapsules through composite technology, and the surface of the capsule is ruptured by high-temperature triggering to release effective fire-extinguishing ingredients. The fire-extinguishing efficiency when the fire-extinguishing ingredients are instantly erupted under high-temperature triggering is significantly better than that of liquid fire-extinguishing agents. Moreover, the diameter of the microcapsules is less than 200 microns, and can be further developed according to the usage scenarios to be made into sheets, tapes, etc., with a wide range of applicable scenarios. The fire-extinguishing microcapsule process can be used for mass production, filling the gap in this field in China. At the same time, it is more efficient, safer, more environmentally friendly, and easier to store and transport as a whole, which improves the deficiencies in the existing technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the steps of the present invention. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Example 1

[0024] See also Figure 1 The present invention provides a technical solution: a production process of a highly efficient fire extinguishing microcapsule product, specifically comprising the following steps:

[0025] Step 1: Add water into the reactor, add PET powder adhesive, stir and heat, and cool when the PET powder adhesive is completely dissolved;

[0026] Step 2: Add diatom powder and stir. When the temperature in the reactor drops to 40°C, add 2-methyl-3-pentanone and stir.

[0027] Step 3: Inject nitrogen into the reactor and add a catalyst and continue stirring for 40 minutes. The catalyst mainly includes a transition metal catalyst, such as palladium and nickel catalyst, which can improve the reaction efficiency and product purity;

[0028] Step 4: Add silane coupling agent and stir. When the temperature in the reactor drops to 30°C and the pH value in the reactor is neutral, continue stirring for 30 minutes and put the capsule mixture in the reactor into a container. The silane coupling agent is a type of low-molecular-weight organic silicon compound with a special structure. Its general formula is RSiX3, where R represents an active functional group that has affinity or reaction ability with polymer molecules, and X represents an alkoxy group that can be hydrolyzed. The silane coupling agent chemically bonds with inorganic materials and organic materials through the functional groups at both ends, respectively, to increase the adhesion of the two materials. Common silane coupling agents include vinyltriethoxysilane and vinyltrimethoxysilane;

[0029] Step 5: Wash the capsules with pure water, spin dry with a centrifuge, dry the capsules in an oven at 45°C, and package them.

[0030] In this embodiment, in step 1, the heating temperature is 85°C, the stirring speed is 1180r / min, and the cooling temperature is 60°C.

[0031] In this embodiment, in step 2, the time for adding diatom powder is 30 minutes, the stirring speed is 250 r / min, and the stirring time is 30 minutes.

[0032] In this embodiment, the stirring speed of adding 2-methyl-3-pentanone in step 2 is 100 r / min.

[0033] In this embodiment, in step 4, the stirring speed of the silane coupling agent is 130 r / min, and the stirring time is 3.5 h.

[0034] In this embodiment, the PET powder binder is 6%, the pure water is 44%, the catalyst is 1%, the diatom powder is 7.7%, the silane coupling agent is 3.3%, and the 2-methyl-3-pentanone is 38%.

[0035] In this embodiment, the diatom powder is 3000 mesh, and its main component is natural silicon dioxide (SiO2), which has a layered, fibrous and porous structure.

[0036] Example 2

[0037] The difference from this implementation 1 is: Please refer to Figure 1 The present invention provides a technical solution: a production process of a highly efficient fire extinguishing microcapsule product, specifically comprising the following steps:

[0038] Step 1: Add water into the reactor, add PET powder adhesive, stir and heat, and cool when the PET powder adhesive is completely dissolved;

[0039] Step 2: Add diatom powder and stir. When the temperature in the reactor drops to 38°C, add 2-methyl-3-pentanone and stir.

[0040] Step 3: Inject nitrogen into the reactor, add the catalyst and continue stirring for 35 minutes;

[0041] Step 4: Add silane coupling agent and stir. When the temperature in the reactor drops to 28°C and the pH value in the reactor is neutral, continue stirring for 28 minutes and put the capsule mixture in the reactor into a container.

[0042] Step 5: Wash the capsules with pure water, spin dry with a centrifuge, dry the capsules in an oven at 42°C, and package them.

[0043] In this embodiment, in step 1, the heating temperature is 70°C, the stirring speed is 160r / min, and the cooling temperature is 55°C.

[0044] In this embodiment, in step 2, the time for adding diatom powder is 20 minutes, the stirring speed is 200 r / min, and the stirring time is 25 minutes.

[0045] In this embodiment, the stirring speed of adding 2-methyl-3-pentanone in step 2 is 80 r / min.

[0046] In this embodiment, in step 4, the stirring speed of the silane coupling agent is 120 r / min, and the stirring time is 3 h.

[0047] In this embodiment, the raw material ratio in this process is as follows:

[0048] PET powder adhesive 4.5%, pure water 43%, catalyst 1%, diatom powder 7.7%, silane coupling agent 3.3%, 2-methyl-3-pentanone 38%.

[0049] In this embodiment, the diatom powder has a mesh size of 2900.

[0050] Example 3

[0051] The difference from the above embodiment is: Figure 1 The present invention provides a technical solution: a production process of a highly efficient fire extinguishing microcapsule product, specifically comprising the following steps:

[0052] Step 1: Add water into the reactor, add PET powder adhesive, stir and heat, and cool when the PET powder adhesive is completely dissolved;

[0053] Step 2: Add diatom powder and stir. When the temperature in the reactor drops to 39°C, add 2-methyl-3-pentanone and stir.

[0054] Step 3: Inject nitrogen into the reactor, add the catalyst and continue stirring for 38 minutes;

[0055] Step 4: Add silane coupling agent and stir. When the temperature in the reactor drops to 29°C and the pH value in the reactor is neutral, continue stirring for 29 minutes and put the capsule mixture in the reactor into a container.

[0056] Step 5: Wash the capsules with pure water, spin dry with a centrifuge, dry the capsules in an oven at 43°C, and package them.

[0057] In this embodiment, in step 1, the heating temperature is 80°C, the stirring speed is 170r / min, and the cooling temperature is 58°C.

[0058] In this embodiment, in step 2, the time for adding diatom powder is 25 minutes, the stirring speed is 230 r / min, and the stirring time is 28 minutes.

[0059] In this embodiment, the stirring speed of adding 2-methyl-3-pentanone in step 2 is 90 r / min.

[0060] In this embodiment, in step 4, the stirring speed of the silane coupling agent is 125 r / min, and the stirring time is 3.2 h.

[0061] In this embodiment, the raw material ratio in this process is as follows:

[0062] PET powder adhesive 7%, pure water 44.8%, catalyst 1%, diatom powder 7.7%, silane coupling agent 3.3%, 2-methyl-3-pentanone 39%.

[0063] In this embodiment, the diatom powder has a mesh size of 3000.

[0064] Although embodiments of the present invention have been shown and described (see the above detailed description for details), it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A production process for a highly efficient fire extinguishing microcapsule product, characterized in that: The specific steps include: Step 1: Add water into the reactor, add PET powder adhesive, stir and heat, and cool when the PET powder adhesive is completely dissolved; Step 2: Add diatom powder and stir. When the temperature in the reactor drops to 38-40°C, add 2-methyl-3-pentanone and stir. Step 3: Inject nitrogen into the reactor, add the catalyst and continue stirring for 35 to 40 minutes; Step 4: Add silane coupling agent and stir. When the temperature in the reactor drops to 28-30°C and the pH value in the reactor is neutral, continue stirring for 28-30 minutes and put the capsule mixture in the reactor into a container. Step 5: Wash the capsules with pure water, spin dry with a centrifuge, dry the capsules in an oven at 42-45°C, and package them.

2. The production process of a highly efficient fire extinguishing microcapsule product according to claim 1, characterized in that: In the step 1, the heating temperature is 70-85°C, the stirring speed is 160-180 r / min, and the cooling temperature is 55-60°C.

3. The production process of a highly efficient fire extinguishing microcapsule product according to claim 1, characterized in that: In the step 2, the time for adding diatom powder is 20 to 30 minutes, the stirring speed is 200 to 250 r / min, and the stirring time is 25 to 30 minutes.

4. The production process of a highly efficient fire extinguishing microcapsule product according to claim 1 is characterized in that: The stirring speed of adding 2-methyl-3-pentanone in the step 2 is 80-100 r / min.

5. The production process of a highly efficient fire extinguishing microcapsule product according to claim 1, characterized in that: In the step 4, the stirring speed of the silane coupling agent is 120-130 r / min, and the stirring time is 3-3.5 h.

6. The production process of a highly efficient fire extinguishing microcapsule product according to claim 1, characterized in that: The raw material ratio in this process is as follows: PET powder adhesive 4.5-7%, pure water 43-44.8%, catalyst 1%, diatom powder 7.7%, silane coupling agent 3.3%, 2-methyl-3-pentanone 38-39%.

7. The production process of a highly efficient fire extinguishing microcapsule product according to claim 6, characterized in that: The PET powder adhesive comprises 6%, pure water 44%, a catalyst 1%, diatom powder 7.7%, a silane coupling agent 3.3%, and 2-methyl-3-pentanone 38%.

8. The production process of a highly efficient fire extinguishing microcapsule product according to claim 6, characterized in that: The diatom powder has a mesh size of 2900 to 3000.

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