Preparation process of flame retardant and fragment-resistant coating material

Abstract

The present invention relates to the technical field of coating composition production, specifically to a preparation process for a flame-retardant and fragment-resistant coating material, first adding a polyether polyol into a mixing reaction device, dehydrating it in a vacuum at 95°C for one hour, then releasing the vacuum state, adjusting the temperature to 85°C, adding isocyanate, amino-terminated polyether, chain extender and organic bismuth isooctanoate catalyst into the mixing reaction device for two hours of mixing reaction, lowering the temperature to 45°C, then adding cyanuric acid melamine, oxidized polyethylene wax and inorganic flame retardant into the mixing reaction device, stirring for two hours to prepare the desired coating material. In the present invention, the main processing flow of the coating material can be completed by the mixing reaction device, and the rotating shaft device not only plays a role in rotating and driving the mixing device, but also can guide the mixing device to move up and down, and the rotating shaft device can also assist in transporting the coolant to each mixing device, and the function of supplying power to the heater through the collector ring.

Description

Technical Field

[0001] The invention relates to the technical field of coating composition production, in particular to a preparation process of a flame-retardant and fragment-resistant coating material. Background Art

[0002] In order to improve the damage protection effect of traditional oil storage and transportation equipment during transportation, it is necessary to set a protective layer on the surface of the equipment. The traditional protective layer mainly adopts nylon isolation layer, natural rubber composite layer or rubber coated fabric layer. However, since this type of simple protective layer can no longer meet higher protection requirements, better coating materials are currently being explored in the market.

[0003] Among them, the composite material with polyurea-polyurethane hybrid as the main body formed by polyether polyol, isocyanate and terminal amino polyether with the participation of chain extender and catalysis of organic bismuth isooctanoate catalyst showed excellent performance. However, the process flow required for the production of such coating materials is relatively complicated, and it needs to go through multiple steps such as vacuuming, heating, cooling, mixing reaction, etc., which involves multiple transportation and storage of materials. Therefore, the production process is cumbersome and complicated, which makes it difficult to produce quickly using existing production line equipment.

[0004] Therefore, we need a preparation process for a flame-retardant and fragment-resistant coating material to solve the problem that the existing production line cannot complete the rapid production of coating materials in an integrated manner, which can effectively reduce the production difficulty and increase the production speed of coating materials. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that the existing production line cannot complete the rapid production of coating materials in an integrated manner. The present application provides a preparation process for a flame retardant and fragment-resistant coating material, which effectively reduces the production difficulty and improves the production speed of the coating material.

[0006] To achieve the above object, the present invention provides the following technical solution: a preparation process of a flame retardant and fragmentation resistant coating material, wherein the coating material is composed of the following raw materials in percentage by mass:

[0007] Polyether polyol 25% to 32%, isocyanate 30% to 37%, amino-terminated polyether 15% to 20%, chain extender 12% to 16%, melamine cyanurate 2% to 3.5%, oxidized polyethylene wax 0.4% to 1%, inorganic flame retardant 2% to 4% and organic bismuth isooctanoate catalyst 0.2% to 0.5%;

[0008] The polyether polyol is selected from one or more of polyoxypropylene glycol with a molecular weight of 1000 to 3500 or polytetramethylene glycol with a molecular weight of 1500 to 4500;

[0009] The isocyanate is selected from one or both of toluene diisocyanate and isophorone diisocyanate;

[0010] The amino-terminated polyether is a trifunctional amino-terminated polyether;

[0011] The chain extender is selected from one or more of glycerol, trimethylolpropane, triethylene glycol or sorbitol;

[0012] The inorganic flame retardant is composed of boron oxide, zinc oxide, nano zirconium oxide and nano titanium oxide in a mass ratio of 1:1:2:1.

[0013] The preparation process comprises the following steps:

[0014] Add polyether polyol into the mixed reaction device 1, vacuum dehydrate at 85°C to 105°C for one hour, then release the vacuum state, and then reduce the temperature to 75°C to 90°C, add isocyanate, amino-terminated polyether, chain extender and organic bismuth isooctanoate catalyst into the mixed reaction device 1 for mixed reaction, react for two hours, and then reduce the temperature to 40°C to 50°C again, and then add melamine cyanurate, oxidized polyethylene wax and inorganic flame retardant into the mixed reaction device 1, and continue stirring for two hours to prepare the desired coating material;

[0015] The mixing reaction device comprises a main shell, and the interior of the main shell is provided with an equipment chamber and a reaction chamber in sequence from top to bottom, a rotating shaft device is rotatably installed at the center of the reaction chamber, and a mixing device is installed on the rotating shaft device through a lifting seat, the rotating shaft device comprises a central shaft rotatably installed with the main shell through a bearing, and the central shaft is provided with an inlet docking annular opening and a return docking annular opening for connecting with an external coolant circulation supply device, a driven gear is fixedly installed on the top of the central shaft, and a guide rod is fixedly installed on the bottom of the central shaft, the lifting seat comprises a connecting seat slidably installed with the guide rod, and a sliding matching protrusion which is slidably matched with the guide rod is integrally formed on the connecting seat, a height adjustment push rod for driving the connecting seat to move up and down along the guide rod is fixedly installed in the equipment cavity, and the main shell is provided with a plurality of connecting rods. A vacuum pump for evacuating the reaction chamber is fixedly installed, a main motor is fixedly installed in the equipment chamber, and the output end of the main motor drives a driving gear meshing with a driven gear, the mixing device includes a mounting plate fixedly installed with a connecting seat, and a heater for heating is fixedly installed on the mounting plate, the inlet docking annular port sends cooling fluid into the mounting plate through an inlet hose and then sends the cooling fluid back to the reflux docking annular port through a reflux hose, a one-way discharge valve for discharging materials is fixedly installed on the mounting plate, and materials are fed into the one-way discharge valve through a feed hose in the connecting seat, a controller is fixedly installed on the main shell, and the controller is electrically connected to the heater, vacuum pump, main motor and height adjustment push rod respectively, and a discharge docking port for discharging materials is provided at the bottom of the reaction chamber.

[0016] Preferably, the main shell is provided with a hollow cavity for heat insulation and heat exchange at a position corresponding to the reaction chamber, and a spiral flow channel is provided in the hollow cavity, the top of the spiral flow channel is connected to an external cooling gas circulation supply device through a negative pressure pump, and the bottom of the spiral flow channel is connected to an external cooling gas circulation supply device through a cooling gas supply pipe, an inlet control valve for controlling the opening and closing state of the cooling gas supply pipe is installed on the cooling gas supply pipe, and the inlet control valve and the negative pressure pump are electrically connected to the controller, a pressure seat for supporting the bottom of the reaction chamber is provided at the bottom of the hollow cavity, and an air vent is provided on the pressure seat for facilitating the passage of cooling gas provided by the cooling gas supply pipe.

[0017] Preferably, a discharge device for controlling discharge is provided at a position corresponding to the discharge interface at the bottom of the main shell body, and the discharge device includes a docking sleeve fixedly mounted on the bottom of the main shell body, and the docking sleeve is provided with a sliding cavity docking with the discharge interface, the sliding cavity is connected to a discharge pipe, and a discharge control push rod is fixedly mounted on the bottom of the docking sleeve, the output end of the discharge control push rod drives a closing plug that slides along the sliding cavity and is used to close the discharge interface, and the discharge control push rod is electrically connected to the controller.

[0018] Preferably, a feed butt joint for feeding is fixedly mounted on the top of the main shell, and a feed control valve for controlling feeding is fixedly mounted on the feed butt joint, the bottom of the feed butt joint is rotatably mounted on the center axis, and the bottom of the feed butt joint is connected to the feed hose, and the feed control valve is electrically connected to the controller.

[0019] Preferably, an inlet cavity connected to the inlet hose is provided in the mounting plate, and a reflux cavity connected to the reflux hose is provided in the mounting plate, the inlet cavity and the reflux cavity are connected through at least three flow-guiding heat-exchange tubes arranged in an array, and a heat-exchange plate fixed to the heating end of the heater is fitted on the flow-guiding heat-exchange tubes.

[0020] Preferably, the output end of the height adjustment push rod drives a docking slip ring, and the connecting seat is provided with a rotation matching groove which is rotatably mounted with the docking slip ring.

[0021] Preferably, the upper rear end and the lower front end of the mounting plate are respectively provided with obliquely arranged oblique shovel plates, and a metal scraper for removing materials adhering to the inner wall of the reaction chamber is provided at the contact point between the mounting plate and the inner wall of the reaction chamber.

[0022] Preferably, a cooling circulation device is provided in the equipment cavity, and the cooling circulation device includes a circulation reflux pipe and a circulation inlet pipe fixed to the equipment cavity, the circulation reflux pipe is rotatably installed with the reflux docking annular opening through a reflux matching ring, and the circulation inlet pipe is rotatably installed with the inlet docking annular opening through an inlet matching ring, and the circulation reflux pipe and the circulation inlet pipe are both connected to an external coolant circulation supply device.

[0023] Preferably, an auxiliary cooling device for dissipating heat for the main motor and the height adjustment push rod is provided in the equipment cavity, the auxiliary cooling device includes a second control valve fixedly mounted on the circulating inlet pipe, and the auxiliary cooling device includes a first control valve fixedly mounted on the circulating return pipe, a heat exchange winding pipe wound around the main motor and the height adjustment push rod is connected between the first control valve and the second control valve, and a fitting heat conductive sheet for fitting to the heating position of the main motor and the height adjustment push rod is connected to the heat exchange winding pipe, a fan for blowing air to cool the surface of the main motor is provided in the equipment cavity, and the first control valve, the second control valve and the fan are electrically connected to the controller respectively.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The present invention proposes a preparation process for a flame retardant and fragmentation-resistant coating material. The main processing flow of the coating material can be completed through a mixing reaction device, so as to quickly prepare the coating material. In the processing of the coating material, the rotating shaft device not only plays a role in rotating and driving the mixing device, but also can guide the mixing device to move up and down. At the same time, the rotating shaft device can also assist in transporting the coolant to each mixing device, and power the heater through the collector ring. Therefore, it realizes multiple uses of one thing and enriches the function of the rotating shaft device to solve the problem that the existing production line cannot complete the rapid production of coating materials in an integrated manner. It can effectively reduce the production difficulty and improve the production speed of the coating material. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the mixed reaction device of the present invention;

[0027] Figure 2 It is a cross-sectional view of the structure of the mixing reaction device of the present invention;

[0028] Figure 3 It is a schematic diagram of the installation of the rotating shaft device and the mixing device of the present invention;

[0029] Figure 4 It is a cross-sectional schematic diagram of the mixing device of the present invention;

[0030] Figure 5 It is a structural cross-sectional view of the rotating shaft device of the present invention;

[0031] Figure 6 It is a schematic diagram of the structure of the auxiliary cooling device and the cooling circulation device of the present invention;

[0032] Figure 7 It is a cross-sectional view of the internal structure of the main housing of the present invention;

[0033] Figure 8 It is a structural schematic diagram of the lifting seat of the present invention;

[0034] Fig. 9 It is a structural schematic diagram of the pressure bearing seat of the present invention;

[0035] Fig.10 It is a structural sectional view of the discharging device of the present invention.

[0036] In the figure: 1. Mixing reaction device; 2. Mixing device; 201. Heater; 202. Inlet cavity; 203. Heat exchange plate; 204. Guide heat exchange tube; 205. Reflux cavity; 206. Oblique shovel plate; 207. One-way discharge valve; 208. Mounting plate; 3. Lifting seat; 301. Sliding matching protrusion; 302. Connecting seat; 303. Rotating matching groove; 4. Auxiliary cooling device; 401. First control valve; 402. Second control valve; 403. Heat exchange winding tube; 404. Fitting heat conductive plate; 5. Cooling circulation device; 501. Circulation reflux tube; 502. Circulation inlet tube; 503. Inlet matching ring; 504. Reflux matching ring; 6. Rotating shaft device; 601. Driven gear; 602. Inlet docking annular opening; 603. Center shaft; 604, reflux docking annular opening; 605, inlet hose; 606, feed hose; 607, reflux hose; 608, guide rod; 7, discharge device; 701, discharge pipe; 702, closing plug; 703, sliding cavity; 704, docking sleeve; 705, discharge control push rod; 8, feed docking tube; 9, feed control valve; 10, main shell; 11, controller; 12, vacuum pump; 13, negative pressure pump; 14, inlet control valve; 15, cooling gas supply pipe; 16, pressure seat; 17, hollow cavity; 18, spiral flow channel; 19, reaction chamber; 20, equipment chamber; 21, main motor; 22, driving gear; 23, air vent; 24, fan; 25, discharge docking port; 26, height adjustment push rod; 27, docking slip ring. DETAILED DESCRIPTION

[0037] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit 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.

[0038] In the description of the present invention, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "one", "first", "second", "third", "fourth", "fifth", "sixth" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0039] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] For the purpose of simplicity and illustration, the principles of the embodiments are mainly described by reference to examples. In the following description, many specific details are proposed to provide a thorough understanding of the embodiments. However, it is obvious that for those of ordinary skill in the art, these embodiments may not be limited to these specific details in practice. In some instances, known methods and structures are not described in detail to avoid making these embodiments unnecessarily difficult to understand. In addition, all embodiments can be used in combination with each other. Embodiment 1

[0041] The present invention provides a technical solution: a preparation process of a flame retardant and fragmentation resistant coating material, wherein the coating material is composed of the following raw materials in percentage by mass:

[0042] Polyether polyol 30%, isocyanate 32%, amino-terminated polyether 16%, chain extender 15%, melamine cyanurate 3%, oxidized polyethylene wax 0.5%, inorganic flame retardant 3% and organic bismuth isooctanoate catalyst 0.5%.

[0043] The polyether polyol is selected from one or more of polyoxypropylene glycol with a molecular weight of 1000-3500 or polytetramethylene ether glycol with a molecular weight of 1500-4500, the isocyanate is selected from one or both of toluene diisocyanate and isophorone diisocyanate, the amino-terminated polyether is selected from trifunctional amino-terminated polyether, the chain extender is selected from one or more of glycerol, trimethylolpropane, triethylene glycol or sorbitol, the inorganic flame retardant is composed of boron oxide, zinc oxide, nano zirconium oxide and nano titanium oxide in a ratio of 1:1:2:1 by mass, and the particle size of the inorganic flame retardant is controlled between 30nm and 60nm.

[0044] In the coating material, polyether polyol, isocyanate and amino-terminated polyether can form a polyurea-polyurethane hybrid with the participation of a chain extender and the catalysis of an organic bismuth isooctanoate catalyst, thereby achieving the effects of anti-explosion, flame retardancy and anti-fragmentation. After combustion, melamine cyanurate can form an isolation layer together with an inorganic flame retardant to further achieve a flame retardant effect. Oxidized polyethylene wax acts as a dispersant to facilitate the rapid mixing reaction of the raw materials. Therefore, after the mixed reaction is formed, the coating material can be sprayed onto the surface of an external device under high pressure, which can effectively achieve the effects of flame retardancy and anti-fragmentation on the external device. At the same time, the production process of the coating material will be simpler.

[0045] The preparation process comprises the following steps:

[0046] Add polyether polyol into the mixed reaction device 1, vacuum dehydrate at 95°C for one hour, then release the vacuum state, and then reduce the temperature to 85°C, add isocyanate, terminal amino polyether, chain extender and organic bismuth isooctanoate catalyst into the mixed reaction device 1 for mixed reaction, after two hours of reaction, reduce the temperature again to 45°C, and then add melamine cyanurate, oxidized polyethylene wax and inorganic flame retardant into the mixed reaction device 1, continue stirring for two hours to prepare the desired coating material.

[0047] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 7 and Figure 8The mixing reaction device 1 includes a main housing 10, and the interior of the main housing 10 is sequentially provided with an equipment chamber 20 and a reaction chamber 19 from top to bottom. A rotating shaft device 6 is rotatably installed at the center of the reaction chamber 19, and a mixing device 2 is installed on the rotating shaft device 6 through a lifting seat 3. The rotating shaft device 6 includes a central shaft 603 rotatably installed with the main housing 10 through a bearing, and an inlet docking annular port 602 and a return docking annular port 604 for connecting an external coolant circulation supply device are opened on the central shaft 603. A driven gear 601 is fixedly installed on the top of the central shaft 603, and a guide rod 60 is fixedly installed on the bottom of the central shaft 603. 8. The lifting seat 3 includes a connecting seat 302 slidably mounted with the guide rod 608, and a sliding matching protrusion 301 slidably matched with the guide rod 608 is integrally formed on the connecting seat 302. A height adjustment push rod 26 for driving the connecting seat 302 to move up and down along the guide rod 608 is fixedly installed in the equipment chamber 20, and a vacuum pump 12 for evacuating the reaction chamber 19 is fixedly installed on the main shell 10. The output end of the height adjustment push rod 26 is driven by a docking slip ring 27, and a rotation matching groove 303 rotatably mounted with the docking slip ring 27 is opened on the connecting seat 302. When the connecting seat 302 rotates, the docking slip ring 27 and the rotating The movable matching grooves 303 will rotate relative to each other, but the docking slip ring 27 can still push the connecting seat 302 up and down to move. A main motor 21 is fixedly installed in the equipment cavity 20, and the output end of the main motor 21 drives a driving gear 22 meshing with the driven gear 601. The main motor 21 is used to drive the central axis 603 to rotate, thereby driving the mixing device 2 to rotate through the guide rod 608. The mixing device 2 includes a mounting plate 208 fixedly installed with the connecting seat 302, and a heater 201 for heating is fixedly installed on the mounting plate 208. The inlet docking annular port 602 delivers the coolant into the installation through the inlet hose 605. After being installed in the plate 208, the coolant is returned to the reflux docking annular port 604 through the reflux hose 607. A one-way discharge valve 207 for discharging materials is fixedly installed on the mounting plate 208. The one-way discharge valve 207 only allows materials to enter the reaction chamber 19 from the feed hose 606, and the connection seat 302 feeds materials into the one-way discharge valve 207 through the feed hose 606. A controller 11 is fixedly installed on the main shell 10, and the controller 11 is electrically connected to the heater 201, the vacuum pump 12, the main motor 21 and the height adjustment push rod 26 respectively, and a discharge docking port 25 for discharging materials is provided at the bottom of the reaction chamber 19.

[0048] See also Figure 2 , Figure 3 and Figure 4An inlet chamber 202 connected to the inlet hose 605 is provided in the mounting plate 208, and a reflux chamber 205 connected to the reflux hose 607 is provided in the mounting plate 208. The inlet chamber 202 and the reflux chamber 205 are connected through at least three flow guiding heat exchange tubes 204 arranged in an array, and a heat exchange plate 203 fixed to the heating end of the heater 201 is fitted on the flow guiding heat exchange tube 204. Obliquely arranged oblique shovel plates 206 are respectively installed at the upper end of the rear side and the lower end of the front side of the mounting plate 208, and a metal scraper for removing materials adhering to the inner wall of the reaction chamber 19 is provided at the contact point between the mounting plate 208 and the inner wall of the reaction chamber 19.

[0049] See also Figure 2 and Figure 6 A cooling circulation device 5 is arranged in the equipment cavity 20, and the cooling circulation device 5 includes a circulation return pipe 501 and a circulation inlet pipe 502 fixed to the equipment cavity 20, the circulation return pipe 501 is rotatably installed with the return docking annular opening 604 through the return matching ring 504, and the coolant is sent into the circulation return pipe 501 from the return hose 607, and the circulation inlet pipe 502 is rotatably installed with the inlet docking annular opening 602 through the inlet matching ring 503, and the coolant is sent into the inlet hose 605 from the circulation inlet pipe 502, and the circulation return pipe 501 and the circulation inlet pipe 502 are both connected to the external coolant circulation supply device.

[0050] In this embodiment, the various functions of the mixing reaction device 1 are used as follows:

[0051] 1. Loading function: The raw materials to be mixed and reacted are manually fed into the mixing device 2 from the feeding hose 606 and discharged into the reaction chamber 19 through the one-way discharge valve 207 located on the mixing device 2. The loading process is then achieved by closing the inlet end of the feeding hose 606.

[0052] 2. Vacuuming function: When the inside of the reaction chamber 19 needs to be evacuated, the reaction chamber 19 can be evacuated by the vacuum pump 12. An air intake valve connected to the reaction chamber 19 is provided on the main shell 10, and the air intake valve is electrically connected to the controller 11. When the vacuum state in the reaction chamber 19 needs to be released, the air intake valve can be controlled by the controller 11 to re-supply air.

[0053] 3. Heating function: When it is necessary to heat the raw materials in the reaction chamber 19, the electric energy sent from the external power supply is connected to the heater 201 through the collector ring arranged on the central axis 603, and then the heater 201 is used for heating. During the heating process, the heat will be in contact with the raw materials through the surface of the heat exchange plate 203 and the surface of the mounting plate 208 to achieve heat exchange, thereby heating the raw materials. A temperature sensor for detecting the temperature in the reaction chamber 19 and electrically connected to the controller 11 is also provided in the reaction chamber 19, so that the heater 201 can be turned off by the controller 11 when the temperature of the raw materials is heated to a preset value.

[0054] 4. Cooling function: When the raw materials in the reaction chamber 19 need to be cooled, the controller 11 sends a cooling working signal to the external coolant circulation supply device, and the external coolant circulation supply device sequentially delivers the coolant into the mounting plate 208 through the circulating inlet pipe 502, the inlet matching ring 503 and the inlet hose 605, so as to use the mounting plate 208 and the guide heat exchange pipe 204 to exchange heat between the coolant and the raw materials to cool the raw materials. The used coolant will also be recovered by the external coolant circulation supply device through the reflux hose 607, the reflux matching ring 504 and the circulating reflux pipe 501, and will be re-cooled and participate in the circulation. When the controller 11 detects that the raw materials are cooled to the required temperature through the temperature sensor located in the reaction chamber 19, the controller 11 will send a control signal to the external coolant circulation supply device to stop the cooling cycle.

[0055] 5. Mixing reaction function: When the raw materials in the reaction chamber 19 need to be mixed, under the control of the controller 11, the main motor 21 will drive the central shaft 603 to rotate, so that the central shaft 603 can drive the mixing device 2 to rotate in the reaction chamber 19, and the mixing device 2 will continuously stir the raw materials to accelerate the mixing of the raw materials. At the same time, the inclined shovel plate 206 in the mixing device 2 can also shovel the raw materials at different heights to other heights, thereby accelerating the mixing of the raw material components at different heights. Moreover, the main motor 21 can also drive the central shaft 603 to rotate forward and reverse periodically to further enable the materials at different heights to be quickly mixed under the shoveling of the inclined shovel plate 206. In addition, the mixing device 2 will also be driven by the height adjustment push rod 26 to continuously move up and down periodically along the guide rod 608, thereby further driving the materials at different heights to mix with each other to form the required coating material. During the mixing process, materials of different components contact each other to react, thereby effectively accelerating the efficiency of the reaction in the raw materials.

[0056] 6. Discharge function: When discharge is required, the operator opens the seal of the discharge interface 25. At this time, the mixing device 2 continues to stir the coating material in the reaction chamber 19. The mixed material is continuously discharged through the discharge interface 25 under the action of stirring. At the same time, the mixing device 2 can also scrape the wall of the reaction chamber 19 to ensure that the material adhering to the wall of the reaction chamber 19 can be cleaned.

[0057] Therefore, in this technical solution, the main processing flow of the coating material can be completed through the mixing reaction device 1, so that the coating material can be quickly prepared to solve the problem that the existing production line cannot complete the rapid production of the coating material in an integrated manner. It can effectively reduce the production difficulty and improve the production speed of the coating material. In the processing of the coating material, the rotating shaft device 6 not only plays a role in rotating and driving the mixing device 2, but also can guide the mixing device 2 to move up and down. At the same time, the rotating shaft device 6 can also assist in transporting the coolant to each mixing device 2, as well as powering the heater 201 through the collector ring, thereby achieving multiple uses of one object and enriching the function of the rotating shaft device 6. Embodiment 2

[0058] See attached Figure 1 , Figure 2 , Figure 7 and Fig. 9On the basis of the second embodiment, the main shell 10 is provided with a hollow cavity 17 for heat insulation and heat exchange at the position corresponding to the reaction chamber 19, and a spiral flow channel 18 is provided in the hollow cavity 17, the top of the spiral flow channel 18 is connected to the external cooling gas circulation supply equipment through the negative pressure pump 13, and the bottom of the spiral flow channel 18 is connected to the external cooling gas circulation supply equipment through the cooling gas supply pipe 15, an inlet control valve 14 for controlling the opening and closing state of the cooling gas supply pipe 15 is installed on the cooling gas supply pipe 15, and the inlet control valve 14 and the negative pressure pump 13 are both electrically connected to the controller 11, a pressure bearing seat 16 for supporting the bottom of the reaction chamber 19 is provided at the bottom of the hollow cavity 17, and a vent hole 23 is provided on the pressure bearing seat 16 for facilitating the passage of the cooling gas provided by the cooling gas supply pipe 15, when cooling is not required in the reaction chamber 19, the inlet control valve 14 will be closed, and at this time the negative pressure pump 13 will extract the gas in the hollow cavity 17 And maintain the hollow cavity 17 close to the vacuum state, so that the heat in the reaction chamber 19 can be effectively isolated through the hollow cavity 17 and directly dissipated to the external environment by heat conduction. When the raw materials in the reaction chamber 19 need to be cooled, the inlet control valve 14 will be opened, and the external cooling gas supply equipment will send the cooling gas into the hollow cavity 17 through the cooling gas supply pipe 15, and then the cooling gas will be pumped back to the external cooling gas supply equipment through the negative pressure pump 13 to form a cooling cycle. In this process, the cooling gas will cool the material in the reaction chamber 19 through the partition used to isolate the hollow cavity 17 and the reaction chamber 19, thereby accelerating the cooling speed of the material in the reaction chamber 19, meeting the needs of rapid preparation of coating materials, and solving the problem that the rapid production of coating materials cannot be completed in an integrated manner on the existing production line. It can effectively reduce the production difficulty and improve the production speed of coating materials. Embodiment 3

[0059] See also Figure 2 , Figure 7 and Fig.10The bottom of the main shell 10 is provided with a discharge device 7 for controlling the discharge at a position corresponding to the discharge interface 25. The discharge device 7 includes a docking sleeve 704 fixedly mounted on the bottom of the main shell 10, and a sliding cavity 703 docking with the discharge interface 25 is provided on the docking sleeve 704. A discharge pipe 701 is connected to the sliding cavity 703, and a discharge control push rod 705 is fixedly installed at the bottom of the docking sleeve 704. The output end of the discharge control push rod 705 drives a closing plug 702 that slides along the sliding cavity 703 and is used to close the discharge interface 25. The discharge control push rod 705 is electrically connected to the controller 11, and the coating material inside the reaction chamber 19 is not When it is necessary to discharge the material, the closing plug 702 will close the discharge interface 25 under the push of the discharge control push rod 705, so as to avoid leakage of the coating material. When it is necessary to discharge the coating material, the discharge control push rod 705 will drive the closing plug 702 to move to the bottom of the docking sleeve 704 so as to no longer close the discharge interface 25. At this time, the coating material can pass through the discharge interface 25 into the docking sleeve 704, and then be discharged normally through the discharge pipe 701. The discharge control push rod 705 can control the discharge process at any time, which is convenient for the subsequent intermittent discharge of the coating material into the corresponding container for packaging.

[0060] See also Figure 1 and Figure 2 A feed butt joint 8 for loading is fixedly installed on the top of the main shell 10, and a feed control valve 9 for controlling loading is fixedly installed on the feed butt joint 8. The bottom of the feed butt joint 8 is rotatably installed with the central axis 603, and the bottom of the feed butt joint 8 is connected with the feed hose 606. The feed control valve 9 is electrically connected with the controller 11. The feed butt joint 8 can better realize the delivery of raw materials into the feed hose 606. Moreover, since the feed butt joint 8 and the main shell 10 are sealed and fixed, the feed butt joint 8 will also be closed by the feed control valve 9 during non-loading time. Therefore, it can effectively avoid external gas from entering the reaction chamber 19 through the feed butt joint 8 when the reaction chamber 19 is vacuumed, thereby better maintaining the performance of the mixed reaction device 1, solving the problem that the existing production line cannot complete the rapid production of coating materials in an integrated manner, and can effectively reduce the production difficulty and improve the production speed of coating materials. Embodiment 4

[0061] See also Figure 2 , Figure 6 and Figure 7The equipment cavity 20 is provided with an auxiliary cooling device 4 for dissipating heat for the main motor 21 and the height adjustment push rod 26. The auxiliary cooling device 4 includes a second control valve 402 fixedly mounted on the circulation inlet pipe 502, and the auxiliary cooling device 4 includes a first control valve 401 fixedly mounted on the circulation return pipe 501. A heat exchange winding pipe 403 wound around the main motor 21 and the height adjustment push rod 26 is connected between the first control valve 401 and the second control valve 402, and a heat-conducting sheet 404 for being attached to the heating position of the main motor 21 and the height adjustment push rod 26 is connected to the heat exchange winding pipe 403. A fan 24 for blowing air to cool the surface of the main motor 21 is provided in 20, and the first control valve 401, the second control valve 402 and the fan 24 are electrically connected to the controller 11 respectively. The auxiliary cooling device 4 can send the coolant supplied by the external coolant circulation supply equipment into the heat exchange winding tube 403 through the first control valve 401 and the second control valve 402, and then use the heat exchange winding tube 403 to cool the main motor 21 and the height adjustment push rod 26, so that the main motor 21 and the height adjustment push rod 26 can be prevented from failing to work due to overheating, thereby ensuring that the mixing reaction device 1 can operate continuously.

[0062] Although the above describes the illustrative specific implementation methods of the present application so that technicians in this technical field can understand the present application, the present application is not limited to the scope of the specific implementation methods. For ordinary technicians in this technical field, as long as various changes are within the spirit and scope of the present application defined and determined by the attached claims, all application creations using the concept of the present application are protected.

Claims

1. A process for preparing a flame retardant and fragmentation resistant coating material, characterized in that: The coating material is composed of the following raw materials by mass percentage: Polyether polyol 25% to 32%, isocyanate 30% to 37%, amino-terminated polyether 15% to 20%, chain extender 12% to 16%, melamine cyanurate 2% to 3.5%, oxidized polyethylene wax 0.4% to 1%, inorganic flame retardant 2% to 4% and organic bismuth isooctanoate catalyst 0.2% to 0.5%; The polyether polyol is selected from one or more of polyoxypropylene glycol with a molecular weight of 1000 to 3500 or polytetramethylene glycol with a molecular weight of 1500 to 4500; The isocyanate is selected from one or both of toluene diisocyanate and isophorone diisocyanate; The amino-terminated polyether is a trifunctional amino-terminated polyether; The chain extender is selected from one or more of glycerol, trimethylolpropane, triethylene glycol or sorbitol; The inorganic flame retardant is composed of boron oxide, zinc oxide, nano zirconium oxide and nano titanium oxide in a mass ratio of 1:1:2:1; The preparation process comprises the following steps: Add polyether polyol into a mixed reaction device (1), vacuum dehydrate at 85°C to 105°C for one hour, then release the vacuum state, and then reduce the temperature to 75°C to 90°C, add isocyanate, amino-terminated polyether, chain extender and organic bismuth isooctanoate catalyst into the mixed reaction device (1) for mixed reaction, react for two hours, and then reduce the temperature again to 40°C to 50°C, and then add melamine cyanurate, oxidized polyethylene wax and inorganic flame retardant into the mixed reaction device (1), and continue stirring for two hours to prepare the desired coating material; The mixing reaction device (1) comprises a main housing (10), and the interior of the main housing (10) is provided with an equipment chamber (20) and a reaction chamber (19) in order from top to bottom. A rotating shaft device (6) is rotatably mounted at the center of the reaction chamber (19), and a mixing device (2) is mounted on the rotating shaft device (6) via a lifting seat (3). The rotating shaft device (6) comprises a central shaft (603) rotatably mounted with the main housing (10) via a bearing, and an inlet butt joint annular opening (602) and a return butt joint annular opening (604) for connecting to an external coolant circulation supply device are provided on the central shaft (603), a driven gear (601) is fixedly mounted on the top of the central shaft (603), and a bottom of the central shaft (603) is provided with a plurality of gears (601) and a plurality of gears (601) are provided on the central shaft (603). A guide rod (608) is fixedly installed, the lifting seat (3) includes a connecting seat (302) slidably installed with the guide rod (608), and a sliding matching protrusion (301) slidably matched with the guide rod (608) is integrally formed on the connecting seat (302), a height adjustment push rod (26) for driving the connecting seat (302) to move up and down along the guide rod (608) is fixedly installed in the equipment cavity (20), and a vacuum pump (12) for evacuating the reaction chamber (19) is fixedly installed on the main shell (10), a main motor (21) is fixedly installed in the equipment cavity (20), and the output end of the main motor (21) drives a driving gear (22) meshing with the driven gear (601), and the mixing device (2) comprising a mounting plate (208) fixedly mounted on a connecting seat (302), and a heater (201) for heating is fixedly mounted on the mounting plate (208), the inlet butt joint annular opening (602) sends cooling fluid into the mounting plate (208) through an inlet hose (605), and then sends the cooling fluid back to the return butt joint annular opening (604) through a return hose (607), a one-way discharge valve (207) for discharging materials is fixedly mounted on the mounting plate (208), and materials are fed into the one-way discharge valve (207) through a feed hose (606) in the connecting seat (302), and a controller (11) is fixedly mounted on the main housing (10), and the controller (11) is respectively connected to the heater (20 1), the vacuum pump (12), the main motor (21) and the height adjustment push rod (26) are electrically connected, and a discharge interface (25) for discharging is provided at the bottom of the reaction chamber (19), an inlet chamber (202) connected to the inlet hose (605) is provided in the mounting plate (208), and a reflux chamber (205) connected to the reflux hose (607) is provided in the mounting plate (208), the inlet chamber (202) and the reflux chamber (205) are connected through at least three flow guide heat exchange tubes (204) arranged in an array, and a heat exchange plate (203) fixed to the heating end of the heater (201) is fitted on the flow guide heat exchange tube (204), and a cooling circulation device (5) is provided in the equipment chamber (20),The cooling circulation device (5) comprises a circulation return pipe (501) and a circulation inlet pipe (502) fixed to the equipment cavity (20); the circulation return pipe (501) is rotatably mounted on the return butt joint annular opening (604) via a return matching ring (504); and the circulation inlet pipe (502) is rotatably mounted on the inlet butt joint annular opening (602) via an inlet matching ring (503); and both the circulation return pipe (501) and the circulation inlet pipe (502) are connected to an external cooling liquid circulation supply device.

2. The process for preparing a flame retardant and fragmentation resistant coating material according to claim 1, characterized in that: The main shell (10) is provided with a hollow cavity (17) for heat insulation and heat exchange at a position corresponding to the reaction chamber (19), and a spiral flow channel (18) is provided in the hollow cavity (17), the top of the spiral flow channel (18) is connected to an external cooling gas circulation supply device through a negative pressure pump (13), and the bottom of the spiral flow channel (18) is connected to an external cooling gas circulation supply device through a cooling gas supply pipe (15), an inlet control valve (14) for controlling the opening and closing state of the cooling gas supply pipe (15) is installed on the cooling gas supply pipe (15), and the inlet control valve (14) and the negative pressure pump (13) are both electrically connected to the controller (11), and a pressure bearing seat (16) for supporting the bottom of the reaction chamber (19) is provided at the bottom of the hollow cavity (17), and an air vent (23) is provided on the pressure bearing seat (16) for facilitating the passage of cooling gas provided by the cooling gas supply pipe (15).

3. The process for preparing a flame retardant and fragmentation resistant coating material according to claim 1, characterized in that: A discharge device (7) for controlling discharge is provided at a position corresponding to the discharge interface (25) at the bottom of the main shell (10), the discharge device (7) comprising a docking sleeve (704) fixedly mounted on the bottom of the main shell (10), and a sliding cavity (703) docking with the discharge interface (25) is provided on the docking sleeve (704), a discharge pipe (701) is connected to the sliding cavity (703), and a discharge control push rod (705) is fixedly mounted at the bottom of the docking sleeve (704), the output end of the discharge control push rod (705) drives a sealing plug (702) that slides along the sliding cavity (703) and is used to close the discharge interface (25), and the discharge control push rod (705) is electrically connected to the controller (11).

4. The process for preparing a flame retardant and fragmentation resistant coating material according to claim 1, characterized in that: A feed butt joint (8) for feeding is fixedly mounted on the top of the main shell (10), and a feed control valve (9) for controlling feeding is fixedly mounted on the feed butt joint (8), the bottom of the feed butt joint (8) is rotatably mounted on the central axis (603), and the bottom of the feed butt joint (8) is connected to the feed hose (606), and the feed control valve (9) is electrically connected to the controller (11).

5. The process for preparing a flame retardant and fragmentation resistant coating material according to claim 1, characterized in that: The output end of the height adjustment push rod (26) drives a docking slip ring (27), and the connecting seat (302) is provided with a rotation matching groove (303) for rotationally mounting with the docking slip ring (27).

6. The process for preparing a flame retardant and fragmentation resistant coating material according to claim 1, characterized in that: The upper rear end and the lower front end of the mounting plate (208) are respectively provided with obliquely arranged oblique shovel plates (206), and a metal scraper for removing materials adhering to the inner wall surface of the reaction chamber (19) is provided at the contact point between the mounting plate (208) and the inner wall of the reaction chamber (19).

7. The process for preparing a flame retardant and fragmentation resistant coating material according to claim 1, characterized in that: An auxiliary cooling device (4) for dissipating heat from a main motor (21) and a height adjustment push rod (26) is provided in the equipment cavity (20), the auxiliary cooling device (4) comprising a second control valve (402) fixedly mounted on a circulating inlet pipe (502), and the auxiliary cooling device (4) comprising a first control valve (401) fixedly mounted on a circulating return pipe (501), a first control valve (401) wound around the main motor being connected to the first control valve (401) and the second control valve (402). A heat exchange winding tube (403) is provided on the main motor (21) and the height adjustment push rod (26), and a heat conductive sheet (404) is connected to the heat exchange winding tube (403) for being attached to the heating positions of the main motor (21) and the height adjustment push rod (26). A fan (24) for blowing air to cool the surface of the main motor (21) is arranged in the equipment cavity (20), and the first control valve (401), the second control valve (402) and the fan (24) are electrically connected to the controller (11) respectively.

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