CN114293672A - High-temperature-resistant flame-retardant magnesium oxysulfate plate and preparation equipment and method thereof - Google Patents
High-temperature-resistant flame-retardant magnesium oxysulfate plate and preparation equipment and method thereof Download PDFInfo
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Abstract
The invention relates to a high-temperature-resistant flame-retardant magnesium oxysulfate plate which comprises a bearing core, a fluid fuel barrier, a magnesium oxysulfate composite coating and an alkaline glass fiber web, wherein the bearing core is of a grating plate structure with the thickness of not less than 5 mm, the alkaline glass fiber web is coated outside the bearing core, and the magnesium oxysulfate composite coating is coated outside the alkaline glass fiber web. The preparation method comprises five steps of equipment presetting, bearing core presetting, plate primary forming, maintenance operation, demoulding operation and the like. On one hand, the invention greatly improves the structural strength, high temperature resistance and toughness of the sheet material, effectively reduces the dead weight of the magnesium oxysulfate sheet material and has certain active extinguishing capability; on the other hand, the automation degree of the plate production and preparation is effectively improved, the working efficiency and the plate precision of the plate production operation can be effectively improved, and the quality stability of the plate product is also effectively improved, so that the quality and the yield of the plate product are improved, and the labor intensity of the production and preparation is effectively reduced.
Description
Technical Field
The invention relates to a high-temperature-resistant flame-retardant magnesium oxysulfate plate and a preparation method thereof, belonging to the technical field of building materials.
Background
Magnesium oxysulfate is widely applied in the fields of building decoration and the like, but the currently applied magnesium oxysulfate is usually prepared by mixing traditional inorganic materials such as cement, magnesium sulfate and the like, and simultaneously adding core plate structures such as metal nets, polymer nets and the like into raw materials, so that although the use requirements can be met, on one hand, the structural strength and toughness of the current magnesium oxysulfate are relatively poor, and the requirements of fire source emergency treatment and the like cannot be met only by carrying out passive protection on the aspects of fire resistance and high temperature resistance, so that the application range and the fire resistance safety of the magnesium oxysulfate are relatively poor, for example, the magnesium oxysulfate core plate with 2019205748089 as a high-strength A-level fireproof container top and wall surface is developed, aiming at the problem, although a novel magnesium oxysulfate plate is developed to meet the use requirements, the structure of the magnesium oxysulfate plate is complex, the production and use difficulty is high, and the cost is high, such as products of 'a high-strength magnesium oxysulfate fireproof plate' with the patent application number of '2018204784702', and the like;
in addition, no professional production equipment capable of simultaneously meeting the requirements of material mixing, material treatment and maintenance is available in the production of the conventional magnesium oxysulfate plate, so that the production efficiency of the conventional magnesium oxysulfate plate is low, the product quality stability is relatively poor, the labor intensity of production operation is high, and the actual use requirement is difficult to effectively meet.
Therefore, in order to solve the problem, the development of a high-temperature-resistant flame-retardant magnesium oxysulfate plate is urgently needed to meet the requirement of practical use.
Disclosure of Invention
The invention aims to: provides a high-temperature resistant flame-retardant magnesium oxysulfate plate and a preparation method thereof, and aims to solve the application problems of capacity, price, popularity and the like in the prior art.
The high-temperature-resistant flame-retardant magnesium oxysulfate plate comprises a bearing core, a fluid flame retardant, a magnesium oxysulfate composite coating and an alkaline glass fiber web, wherein the bearing core is of a grating plate structure with the thickness not less than 5 mm, the grating hole area of the bearing core is 70% -90% of the surface area of the bearing core, at least one layer of the alkaline glass fiber web is coated outside the bearing core and forms a flame retardant cavity with each grating hole of the bearing core in a closed cavity structure, the fluid flame retardant is embedded in the flame retardant cavity, the magnesium oxysulfate composite coating is coated outside the alkaline glass fiber web, and the thickness of the magnesium oxysulfate composite coating is not less than 5 mm.
Furthermore, the alkaline glass fiber nets are connected with the bearing core through a high polymer adhesive, two adjacent layers of alkaline glass fiber nets are connected through the high polymer adhesive, and gaps of 0-1 mm are formed between the alkaline glass fiber nets symmetrically distributed on the upper end face and the lower end face of the flame-retardant cavity and the fluid flame retardant material.
Further, the magnesium oxysulfate composite coating comprises the following components in percentage by mass: 15-20% of magnesium sulfate, 5-8% of light-burned magnesium oxide, 0.8-2.5% of ceramic fiber, 0.5-1.5% of polypropylene fiber, 10-15% of light perlite, 5-10% of hollow glass microsphere, 0-3% of pigment, 0-10% of cement, 7.5-12.3% of styrene-acrylic emulsion, 2.5-4.5% of gypsum and the balance of deionized water.
Further, the fluid retardant is obtained by mixing any one or more of aluminum hydroxide powder and alumina powder in any proportion.
A preparation device of a high-temperature-resistant flame-retardant magnesium oxysulfide plate comprises a base, a driving guide rail, a bearing keel, a mixing tank, a buffer tank, a feeding pump, a feeding nozzle, a main conveying roller way, an auxiliary conveying roller way, an unfolding machine, a gluing roller, a gluing pump, a maintenance cavity, a forming die and a driving circuit, wherein the base is of a frame structure with a rectangular cross section, at least two guide protection rails are symmetrically distributed on two sides of the axis of the base, are distributed in parallel with the axis of the base and are embedded on the upper end surface of the base, the main conveying roller way is embedded on the upper end surface of the base, the front end surface of the base corresponding to the front end surface of the main conveying roller way is provided with the unfolding machine and the gluing roller, the unfolding machine and the gluing roller are both positioned below the main conveying roller way, the unfolding machine and the gluing roller are both connected with the front end surface of the base through a lifting driving mechanism in a sliding manner, and the gluing roller is communicated with the gluing pump through a flow guide pipe, the auxiliary roller way is embedded in the base, the front end face of the auxiliary roller way is positioned under the main roller way, the bearing keel has a cross section in an Jiong-shaped frame structure, the lower end face of the bearing keel is in sliding connection with the upper end face of the base through a driving guide rail and is positioned over the front half part of the auxiliary roller way, an unfolding machine and a gluing roller are additionally arranged at the position of the front end face of the bearing keel, the unfolding machine and the gluing roller are positioned above the auxiliary roller way and are in sliding connection with the inner side face of the bearing keel through a lifting driving mechanism, one mixing tank and one cache tank are embedded in the upper end face of the bearing keel, the axes of the mixing tank and the cache tank are vertically distributed with the upper end face of the base, the mixing tank and the cache tank are connected in parallel and are respectively communicated with a plurality of feeding nozzles through a feeding pump, and the feeding nozzles connected with the mixing tank and the cache tank are uniformly distributed along the direction vertical to the axis of the auxiliary roller way, the bearing keel lower end face corresponding auxiliary conveying roller way is provided with a forming die, the forming die is of a U-shaped groove-shaped structure in the cross section and is communicated with the mixing tank and the cache tank through the feeding nozzle, the maintenance cavity is of a rectangular cavity structure in the cross section and is embedded in the base and coated outside the rear half part of the auxiliary conveying roller way, and the driving circuit is electrically connected with the driving guide rail, the mixing tank, the cache tank, the feeding pump, the feeding nozzle, the main conveying roller way, the auxiliary conveying roller way, the flattening machine, the gluing roller, the gluing pump and the maintenance cavity respectively.
Further, the maintenance cavity comprises a heat-insulating bearing cavity, a flexible baffle curtain, lifting driving mechanisms, pressure plates, pressure sensors, temperature sensors, ultrasonic transducer vibrators and an irradiation heating mechanism, wherein the heat-insulating bearing cavity is of a cavity structure with a rectangular cross section, the heat-insulating bearing cavity is coated outside the auxiliary conveying roller way and is connected with the base, the front end surface and the rear end surface of the heat-insulating bearing cavity are respectively provided with the flexible baffle curtain, at least one pressure plate is embedded in the heat-insulating bearing cavity and distributed along the axial direction of the auxiliary conveying roller way, each pressure plate is of a plate-shaped structure with a rectangular cross section, the upper end surface of each pressure plate is connected with the top of the heat-insulating bearing cavity through at least one lifting driving mechanism, the structure of each pressure plate is consistent with that of the upper end surface of the forming die, the pressure plates are connected with the lifting driving mechanisms through the pressure sensors, and the upper end surfaces of the pressure plates are respectively provided with at least two temperature sensors and at least two ultrasonic transducer vibrators, and the temperature sensor and the ultrasonic transducer vibrators are uniformly distributed around the axis of the pressing plate, the irradiation heating mechanisms are a plurality of and are symmetrically distributed on two sides of the axis of the auxiliary conveying roller way and connected with the inner surface of the side wall of the heat-insulating bearing cavity, the irradiation heating mechanisms are connected in parallel, the axes of the irradiation heating mechanisms are intersected with the axis of the auxiliary conveying roller way and are vertically distributed, and the lifting driving mechanism, the pressure sensor, the temperature sensor, the ultrasonic transducer vibrators and the irradiation heating mechanisms are electrically connected with a driving circuit.
Furthermore, the lifting driving mechanism is any one of a hydraulic telescopic rod, a pneumatic telescopic rod and an electric telescopic rod, and the driving circuit is a circuit system based on a programmable controller.
Furthermore, a feeding frame is arranged on the outer side surface of the base corresponding to the bearing keel, the feeding frame is communicated with the bearing keel and the auxiliary conveying roller way, a plurality of forming dies are additionally arranged in the feeding frame, and the feeding frame is electrically connected with the driving circuit.
A preparation method of a high-temperature-resistant flame-retardant magnesium oxysulfate plate comprises the following steps:
s1, presetting equipment, namely firstly assembling a base, a driving guide rail, a bearing keel, a mixing tank, a buffer tank, a feeding pump, a feeding nozzle, a main conveying roller way, an auxiliary conveying roller way, a flattening machine, a sizing roller, a sizing pump, a maintenance cavity, a forming die and a driving circuit, simultaneously communicating the feeding pump with a bonding glue solution supply system, adding fluid retardant into the buffer tank for later use, adding each raw material forming the magnesium oxysulfate composite coating into the buffer tank, and continuously stirring and mixing for later use;
s2, presetting a bearing core, conveying the cut bearing core through a main conveying roller way, coating glue on the lower end face of the bearing core by a glue coating roller connected with the front end face of a base in the conveying process, then adhering the lower end face of the bearing core through an alkaline glass fiber net by a flattening machine, conveying the adhered bearing core to an auxiliary conveying roller way and dropping the bearing core into a forming die of the auxiliary conveying roller way, wherein the bearing core is conveyed to the forming die and is matched with a feeding nozzle through a feeding pump in advance, and a magnesium oxysulfate composite coating in a mixing tank is paved at the bottom of the forming die in advance;
s3, primarily molding the board, adjusting the positions of the bearing keel and each device connected with the bearing keel by a driving guide rail, firstly, matching a feeding pump and a feeding nozzle, filling fluid fire retardant in a buffer tank into a flame-retardant cavity of the bearing core, then, gluing the upper end surface of the bearing core by using a flattening machine and a gluing roller arranged in the bearing keel, coating an alkaline glass fiber net layer, and sealing the flame-retardant cavity; finally, driving a feeding pump to be matched with a feeding nozzle, filling the magnesium oxysulfate composite coating in the mixing tank into a forming die, coating the magnesium oxysulfate composite coating outside the bearing core and the alkaline glass fiber web layer, and leveling the surface of the magnesium oxysulfate composite coating on the upper end surface of the forming die to obtain a plate blank;
s4, maintenance operation, namely conveying the plate blank obtained in the step S3 to the forming die from the auxiliary roller way into a maintenance cavity for maintenance, wherein the maintenance time is 20-60 minutes, the maintenance temperature is 35-60 ℃, then discharging the plate blank from the maintenance cavity through the forming die, performing spontaneous combustion cooling to normal temperature, and then standing for 1-10 hours to complete the maintenance operation;
and S5, demolding the plate blank into a forming die after curing is completed, taking out the plate blank to obtain the finished high-temperature-resistant flame-retardant magnesium oxysulfate plate, and cleaning the demolded forming die and returning to the step S1 for recycling.
Compared with the traditional magnesium oxysulfate plate, the structural strength, the high temperature resistance and the toughness of the plate are greatly improved, the dead weight of the magnesium oxysulfate plate is effectively reduced, the comprehensive use performance and the use application range of the magnesium oxysulfate plate can be effectively improved, a fire source can be actively extinguished to a certain extent when the structure of the plate is damaged due to fire, and the novel fire resistance and the application safety are greatly improved; on the other hand, the automation degree of the plate production and preparation is effectively improved, the working efficiency and the plate precision of the plate production operation can be effectively improved, and the quality stability of the plate product is also effectively improved, so that the quality and the yield of the plate product are improved, and the labor intensity of the production and preparation is effectively reduced.
Drawings
The invention is described in detail below with reference to the drawings and the detailed description;
FIG. 1 is a schematic view of a partial structure of the present invention;
FIG. 2 is a cross-sectional partial structure view of the structure of the present invention;
FIG. 3 is a schematic structural view of a high temperature resistant flame retardant magnesium oxysulfate plate production facility;
FIG. 4 is a schematic view of a curing chamber;
FIG. 5 is a flow chart of the preparation method of the present invention.
Detailed Description
In order to facilitate the implementation of the technical means, creation features, achievement of the purpose and the efficacy of the invention, the invention is further described below with reference to specific embodiments.
As shown in fig. 1-2, a high temperature resistant flame retardant magnesium oxysulfate sheet material comprises a bearing core 1, a fluid retardant 2, a magnesium oxysulfate composite coating 3, and an alkaline glass fiber web 4, wherein the bearing core 1 is a grid plate structure with a thickness of not less than 5 mm, the area of grid holes of the bearing core 1 is 70% -90% of the surface area of the bearing core, at least one layer of the alkaline glass fiber web 4 is coated outside the bearing core 1 and forms a flame retardant cavity 5 with each grid hole of the bearing core 1 to form a closed cavity structure, the fluid retardant 2 is embedded in the flame retardant cavity 5, the magnesium oxysulfate composite coating 3 is coated outside the alkaline glass fiber web 4, and the thickness of the magnesium oxysulfate composite coating 3 is not less than 5 mm.
The bearing core 1, the fluid flame retardant 2, the magnesium oxysulfate composite coating 3 and the alkaline glass fiber net 4 can effectively improve the structural strength, the high temperature resistance and the flame retardance of the plate, and the toughness of the plate is improved by the alkaline glass fiber net 4; meanwhile, when a fire disaster occurs, the magnesium oxysulfate composite coating 3 and the alkaline glass fiber net are damaged due to external force impact, such as collapse of a building or active damage of personnel, and the like, the fluid fire retardant 2 arranged in the bearing core 1 can flow out and cover the combustible substances around the bearing core, so that the aim of auxiliary fire extinguishment is fulfilled.
In this embodiment, the alkali glass fiber webs 4 are connected with the bearing core through a polymer adhesive 6, two adjacent alkali glass fiber webs 4 are connected through the polymer adhesive 6, and gaps of 0 to 1 mm are formed between the alkali glass fiber webs 4 symmetrically distributed on the upper end surface and the lower end surface of the flame retardant cavity 5 and the fluid flame retardant 2.
It is emphasized that the magnesium oxysulfate composite coating 3 is composed of the following components in percentage by mass: 15-20% of magnesium sulfate, 5-8% of light-burned magnesium oxide, 0.8-2.5% of ceramic fiber, 0.5-1.5% of polypropylene fiber, 10-15% of light perlite, 5-10% of hollow glass microsphere, 0-3% of pigment, 0-10% of cement, 7.5-12.3% of styrene-acrylic emulsion, 2.5-4.5% of gypsum and the balance of deionized water.
Preferably, the magnesium oxysulfate composite coating 3 is composed of the following components in percentage by mass: 15% of magnesium sulfate, 5% of light-burned magnesium oxide, 0.8% of ceramic fiber, 0.5% of polypropylene fiber, 10% of light perlite, 5% of hollow glass microsphere, 7.5% of styrene-acrylic emulsion, 2.5% of gypsum and the balance of deionized water.
Preferably, the magnesium oxysulfate composite coating 3 is composed of the following components in percentage by mass: 15-20% of magnesium sulfate, 8% of light-burned magnesium oxide, 2.5% of ceramic fiber, 1.5% of polypropylene fiber, 15% of light perlite, 10% of hollow glass microsphere, 3% of pigment, 10% of cement, 12.3% of styrene-acrylic emulsion, 4.5% of gypsum and the balance of deionized water.
Preferably, the magnesium oxysulfate composite coating 3 is composed of the following components in percentage by mass: 18% of magnesium sulfate, 7% of light-burned magnesium oxide, 1.5% of ceramic fiber, 0.8% of polypropylene fiber, 12% of light perlite, 7% of hollow glass microsphere, 1% of pigment, 5.5% of cement, 10% of styrene-acrylic emulsion, 3.5% of gypsum and the balance of deionized water.
Preferably, the fluid retardant 2 is one or more of aluminum hydroxide powder and aluminum oxide powder mixed in any proportion, and the particle size of the fluid retardant 2 is more than 500 meshes.
It is emphasized that, as shown in fig. 3-4, a device for preparing high temperature resistant flame retardant magnesium oxysulfate plate comprises a base 11, a driving guide rail 12, a bearing keel 13, a mixing tank 14, a buffer tank 15, a feeding pump 16, a feeding nozzle 17, a main roller conveyor 18, an auxiliary roller conveyor 19, a flattening machine 101, a sizing roller 102, a sizing pump 103, a curing chamber 104, a forming die 105 and a driving circuit 106, wherein the base 11 is a frame structure with a rectangular cross section, at least two guide guard rails 12 are symmetrically distributed on two sides of the axis of the base 11, are distributed in parallel with the axis of the base 11 and are embedded on the upper end surface of the base 11, the main roller conveyor 18 is embedded on the upper end surface of the base 11, the front end surface of the base 11 corresponding to the front end surface is provided with a flattening machine rubber roller 101 and an upper roller 102, wherein the flattening machine 101 and the upper roller 102 on the front end surface of the base are both located below the main roller conveyor 12, the flattening machine 101 and the sizing roller 102 are both connected with the front end face of the base 11 in a sliding manner through a lifting driving mechanism 107, the sizing roller 102 is communicated with the sizing pump 103 through a guide pipe, the auxiliary conveying roller way 19 is embedded in the base 11, the front end face of the auxiliary conveying roller way is positioned under the main conveying roller way 18, the bearing keel 13 is of a framework structure with the cross section of the shape of the Chinese character 'Jiong', the lower end face of the bearing keel is connected with the upper end face of the base 11 in a sliding manner through a driving guide rail 12 and is positioned over the front half part of the auxiliary conveying roller way 19, the front end face of the bearing keel 13 is additionally provided with a flattening machine 101 and a sizing roller 102, the flattening machine 101 and the sizing roller 102 are positioned over the auxiliary conveying roller way 19 and are connected with the inner side face of the bearing keel 13 in a sliding manner through the lifting driving mechanism 107, the mixing tank 14 and the buffer tank 15 are both embedded in the upper end face of the bearing keel 13, and the axes of the flattening machine are both distributed vertically to the upper end face of the base 11, the mixing tank 14 and the buffer tank 15 are connected in parallel and are respectively communicated with a plurality of feeding nozzles 17 through a feeding pump 16, and all the feeding nozzles 17 connected with the mixing tank 14 and the buffer tank 15 are uniformly distributed along the direction vertical to the axis of the auxiliary roller conveyor 19, a forming die 105 is arranged on the auxiliary roller way 19 corresponding to the lower end surface of the bearing keel 13, the forming die 105 is of a U-shaped groove-shaped structure, and is communicated with a mixing tank 14 and a buffer tank 15 through a feeding nozzle 17, the maintenance cavity 104 is of a rectangular cavity structure in cross section, is embedded in the base 11 and is coated outside the rear half part of the auxiliary conveying roller way 19, the driving circuit 106 is respectively and electrically connected with the driving guide rail 12, the mixing tank 14, the buffer tank 15, the feeding pump 16, the feeding nozzle 17, the main conveying roller way 18, the auxiliary conveying roller way 19, the flattening machine 101, the upper sizing roller 102, the upper sizing pump 103 and the maintenance cavity 104.
Further preferably, the feeding pump 16 is connected with the bearing keel 13, the gluing pump 103 is connected with the base 11, the glue storage mechanism 108 is arranged in the base 11, and the gluing pump 103 is further communicated with the glue storage mechanism 108.
Wherein, the curing chamber 104 comprises a heat-insulating bearing chamber 1041, a flexible curtain 1042, a lifting driving mechanism 107, a pressure plate 1043, a pressure sensor 1044, a temperature sensor 1045, an ultrasonic transducer vibrator 1046 and an irradiation heating mechanism 1047, wherein the heat-insulating bearing chamber 1041 is a cavity structure with a rectangular cross section, covers the outside of the auxiliary roller conveyor 19 and is connected with the base 11, the front end face and the rear end face of the heat-insulating bearing chamber 1041 are respectively provided with a flexible curtain 1042, at least one pressure plate 1043 is embedded in the heat-insulating bearing chamber 1041 and is distributed along the axial direction of the auxiliary roller conveyor 19, each pressure plate 1043 is a plate-shaped structure with a rectangular cross section, the upper end face of each pressure plate 1043 is connected with the top of the heat-insulating bearing chamber 1041 through at least one lifting driving mechanism 107, the structure of the pressure plate 1043 is consistent with the structure of the upper end face of the forming die, and the pressure plate 1043 is connected with the lifting driving mechanism 107 through the pressure sensor 1044, the upper end face of the pressing plate 1043 is provided with at least two temperature sensors 1045 and at least two ultrasonic transducer vibrators 1046, the temperature sensors 1045 and the ultrasonic transducer vibrators 1046 are uniformly distributed around the axis of the pressing plate 1043, a plurality of irradiation heating mechanisms 1047 are symmetrically distributed on two sides of the axis of the auxiliary conveying roller way 19 and are connected with the inner surface of the side wall of the heat-insulating bearing cavity 1041, the irradiation heating mechanisms 1047 are connected in parallel, the axes of the irradiation heating mechanisms are intersected with the axis of the auxiliary conveying roller way 19 and are vertically distributed, and the lifting driving mechanism 107, the pressure sensor 1044, the temperature sensors 1045, the ultrasonic transducer vibrators 1046 and the irradiation heating mechanisms 1047 are electrically connected with the driving circuit 106.
The lower end face of the flexible curtain 1042 is located above the auxiliary roller way 19, the distance between the lower end face and the upper end face of the auxiliary roller way 19 is not more than 1.5 times of the height of the forming die 105, and the two ends of the heat-insulating bearing cavity 1041 are coated by the flexible curtain 1042, so that heat-insulating operation is performed when the heat-insulating bearing cavity 1041 operates.
Preferably, the lifting driving mechanism 107 is any one of a hydraulic telescopic rod, a pneumatic telescopic rod and an electric telescopic rod, and the driving circuit 106 is a circuit system based on a programmable controller.
In addition, a loading frame 109 is arranged on the outer side surface of the base corresponding to the bearing keel 13, the loading frame 109 is communicated with the bearing keel 13 and the auxiliary conveying roller way 19, a plurality of forming dies 105 are additionally arranged in the loading frame 109, and the loading frame 109 is electrically connected with a driving circuit 106.
As shown in fig. 5, a method for preparing a high temperature resistant flame retardant magnesium oxysulfate sheet comprises the following steps:
s1, presetting equipment, namely firstly assembling a base, a driving guide rail, a bearing keel, a mixing tank, a buffer tank, a feeding pump, a feeding nozzle, a main conveying roller way, an auxiliary conveying roller way, a flattening machine, a sizing roller, a sizing pump, a maintenance cavity, a forming die and a driving circuit, simultaneously communicating the feeding pump with a bonding glue solution supply system, adding fluid retardant into the buffer tank for later use, adding each raw material forming the magnesium oxysulfate composite coating into the buffer tank, and continuously stirring and mixing for later use;
s2, presetting a bearing core, conveying the cut bearing core through a main conveying roller way, coating glue on the lower end face of the bearing core by a glue coating roller connected with the front end face of a base in the conveying process, then adhering the lower end face of the bearing core through an alkaline glass fiber net by a flattening machine, conveying the adhered bearing core to an auxiliary conveying roller way and dropping the bearing core into a forming die of the auxiliary conveying roller way, wherein the bearing core is conveyed to the forming die and is matched with a feeding nozzle through a feeding pump in advance, and a magnesium oxysulfate composite coating in a mixing tank is paved at the bottom of the forming die in advance;
s3, primarily molding the board, adjusting the positions of the bearing keel and each device connected with the bearing keel by a driving guide rail, firstly, matching a feeding pump and a feeding nozzle, filling fluid fire retardant in a buffer tank into a flame-retardant cavity of the bearing core, then, gluing the upper end surface of the bearing core by using a flattening machine and a gluing roller arranged in the bearing keel, coating an alkaline glass fiber net layer, and sealing the flame-retardant cavity; finally, driving a feeding pump to be matched with a feeding nozzle, filling the magnesium oxysulfate composite coating in the mixing tank into a forming die, coating the magnesium oxysulfate composite coating outside the bearing core and the alkaline glass fiber web layer, and leveling the surface of the magnesium oxysulfate composite coating on the upper end surface of the forming die to obtain a plate blank;
s4, maintenance operation, namely conveying the plate blank obtained in the step S3 to the forming die from the auxiliary roller way into a maintenance cavity for maintenance, wherein the maintenance time is 20-60 minutes, the maintenance temperature is 35-60 ℃, then discharging the plate blank from the maintenance cavity through the forming die, performing spontaneous combustion cooling to normal temperature, and then standing for 1-10 hours to complete the maintenance operation;
the concrete method for maintenance operation comprises the following steps: the method comprises the steps of firstly, integrally irradiating and heating a forming die and a plate blank in the forming die by a maintenance cavity, simultaneously driving a pressing plate to move downwards by a lifting driving mechanism, embedding the pressing plate into the upper end face of the forming die and abutting against the upper surface of the plate blank, then detecting and adjusting a pressure value between the pressing plate and the plate blank by a pressure sensor, compacting the plate blank, simultaneously driving a temperature sensor and an ultrasonic transducer vibrator arranged on the pressing plate to operate, detecting the maintenance temperature of the plate blank by the temperature sensor, carrying out ultrasonic oscillation operation on the plate blank by the ultrasonic transducer vibrator, improving the surface quality of the plate, eliminating the defects of cracks and the like in the plate, and improving the product quality.
And S5, demolding the plate blank into a forming die after curing is completed, taking out the plate blank to obtain the finished high-temperature-resistant flame-retardant magnesium oxysulfate plate, and cleaning the demolded forming die and returning to the step S1 for recycling.
Compared with the traditional magnesium oxysulfate plate, the structural strength, the high temperature resistance and the toughness of the plate are greatly improved, the dead weight of the magnesium oxysulfate plate is effectively reduced, the comprehensive use performance and the use application range of the magnesium oxysulfate plate can be effectively improved, a fire source can be actively extinguished to a certain extent when the structure of the plate is damaged due to fire, and the novel fire resistance and the application safety are greatly improved; on the other hand, the automation degree of the plate production and preparation is effectively improved, the working efficiency and the plate precision of the plate production operation can be effectively improved, and the quality stability of the plate product is also effectively improved, so that the quality and the yield of the plate product are improved, and the labor intensity of the production and preparation is effectively reduced.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. The high-temperature-resistant flame-retardant magnesium oxysulfate plate is characterized in that: the high-temperature-resistant flame-retardant magnesium oxysulfate plate comprises a bearing core, a fluid flame retardant, a magnesium oxysulfate composite coating and an alkaline glass fiber web, wherein the bearing core is of a grid plate structure with the thickness not less than 5 mm, the area of grid holes of the bearing core is 70% -90% of the surface area of the bearing core, at least one layer of the alkaline glass fiber web is coated outside the bearing core and forms a flame-retardant cavity with each grid hole of the bearing core to form a closed cavity structure, the fluid flame retardant is embedded in the flame-retardant cavity, the magnesium oxysulfate composite coating is coated outside the alkaline glass fiber web, and the thickness of the magnesium oxysulfate composite coating is not less than 5 mm.
2. The high temperature resistant flame retardant magnesium oxysulfate sheet according to claim 1, wherein: the alkaline glass fiber nets are connected with the bearing core through a high polymer adhesive, two adjacent layers of alkaline glass fiber nets are connected through the high polymer adhesive, and gaps of 0-1 mm are formed between the alkaline glass fiber nets and the fluid fire retardant material, wherein the alkaline glass fiber nets are symmetrically distributed on the upper end face and the lower end face of the fire retardant cavity.
3. The high temperature resistant flame retardant magnesium oxysulfate sheet according to claim 1, wherein: the magnesium oxysulfate composite coating comprises the following components in percentage by mass: 15-20% of magnesium sulfate, 5-8% of light-burned magnesium oxide, 0.8-2.5% of ceramic fiber, 0.5-1.5% of polypropylene fiber, 10-15% of light perlite, 5-10% of hollow glass microsphere, 0-3% of pigment, 0-10% of cement, 7.5-12.3% of styrene-acrylic emulsion, 2.5-4.5% of gypsum and the balance of deionized water.
4. The high temperature resistant flame retardant magnesium oxysulfate sheet according to claim 1, wherein: the fluid fire retardant is obtained by mixing any one or more of aluminum hydroxide powder and alumina powder in any proportion.
5. The utility model provides a preparation equipment of fire-retardant sulphur oxygen magnesium panel of high temperature resistant which characterized in that: the preparation equipment of the high-temperature-resistant flame-retardant magnesium oxysulfide plate comprises a base, a driving guide rail, a bearing keel, a mixing tank, a buffer tank, a feeding pump, a feeding nozzle, a main conveying roller way, an auxiliary conveying roller way, an flattening machine, a gluing roller, a gluing pump, a maintenance cavity, a forming die and a driving circuit, wherein the base is of a frame structure with a rectangular cross section, at least two guide protection rails are symmetrically distributed on two sides of the axis of the base, are distributed in parallel with the axis of the base and are embedded on the upper end surface of the base, the main conveying roller way is embedded on the upper end surface of the base, the flattening machine and the gluing roller are arranged on the front end surface of the base corresponding to the front end surface of the main conveying roller way, the flattening machine and the gluing roller are both positioned below the main conveying roller way, and are both connected with the front end surface of the base through a lifting driving mechanism in a sliding manner, and are communicated with the gluing pump through a flow guide pipe, the auxiliary roller way is embedded in the base, the front end face of the auxiliary roller way is positioned under the main roller way, the bearing keel has a cross section in an Jiong-shaped frame structure, the lower end face of the bearing keel is in sliding connection with the upper end face of the base through a driving guide rail and is positioned over the front half part of the auxiliary roller way, an unfolding machine and a gluing roller are additionally arranged at the position of the front end face of the bearing keel, the unfolding machine and the gluing roller are positioned above the auxiliary roller way and are in sliding connection with the inner side face of the bearing keel through a lifting driving mechanism, one mixing tank and one cache tank are embedded in the upper end face of the bearing keel, the axes of the mixing tank and the cache tank are vertically distributed with the upper end face of the base, the mixing tank and the cache tank are connected in parallel and are respectively communicated with a plurality of feeding nozzles through a feeding pump, and the feeding nozzles connected with the mixing tank and the cache tank are uniformly distributed along the direction vertical to the axis of the auxiliary roller way, the bearing keel lower end face corresponding auxiliary conveying roller way is provided with a forming die, the forming die is of a U-shaped groove-shaped structure in the cross section and is communicated with the mixing tank and the cache tank through the feeding nozzle, the maintenance cavity is of a rectangular cavity structure in the cross section and is embedded in the base and coated outside the rear half part of the auxiliary conveying roller way, and the driving circuit is electrically connected with the driving guide rail, the mixing tank, the cache tank, the feeding pump, the feeding nozzle, the main conveying roller way, the auxiliary conveying roller way, the flattening machine, the gluing roller, the gluing pump and the maintenance cavity respectively.
6. The apparatus for preparing refractory magnesium oxysulfate sheet according to claim 5, wherein: the maintenance cavity comprises a heat-insulation bearing cavity, a flexible baffle curtain, a lifting driving mechanism, pressing plates, pressure sensors, temperature sensors, ultrasonic transducer vibrators and an irradiation heating mechanism, wherein the heat-insulation bearing cavity is of a cavity structure with a rectangular cross section, the heat-insulation bearing cavity is coated outside the auxiliary conveying roller way and is connected with the base, the front end surface and the rear end surface of the heat-insulation bearing cavity are respectively provided with one flexible baffle curtain, at least one pressing plate is embedded in the heat-insulation bearing cavity and is distributed along the axial direction of the auxiliary conveying roller way, each pressing plate is of a plate-shaped structure with a rectangular cross section, the upper end surface of each pressing plate is connected with the top of the heat-insulation bearing cavity through at least one lifting driving mechanism, the pressing plate structure is consistent with the upper end surface structure of the forming die, the pressing plates are connected with the lifting driving mechanism through the pressure sensors, and the upper end surfaces of the pressing plates are respectively provided with at least two ultrasonic transducer vibrators of the temperature sensors, and the temperature sensor and the ultrasonic transducer vibrators are uniformly distributed around the axis of the pressing plate, the irradiation heating mechanisms are a plurality of and are symmetrically distributed on two sides of the axis of the auxiliary conveying roller way and connected with the inner surface of the side wall of the heat-insulating bearing cavity, the irradiation heating mechanisms are connected in parallel, the axes of the irradiation heating mechanisms are intersected with the axis of the auxiliary conveying roller way and are vertically distributed, and the lifting driving mechanism, the pressure sensor, the temperature sensor, the ultrasonic transducer vibrators and the irradiation heating mechanisms are electrically connected with a driving circuit.
7. The apparatus for preparing refractory magnesium oxysulfate sheet according to claim 5 or 6, wherein: the lifting driving mechanism is any one of a hydraulic telescopic rod, a pneumatic telescopic rod and an electric telescopic rod, and the driving circuit is a circuit system based on a programmable controller.
8. The apparatus for preparing refractory magnesium oxysulfate sheet according to claim 5, wherein: the outer side surface of the base corresponding to the bearing keel is provided with a feeding frame, the feeding frame is communicated with the bearing keel and the auxiliary conveying roller way, a plurality of forming dies are additionally arranged in the feeding frame, and the feeding frame is electrically connected with a driving circuit.
9. A preparation method of a high-temperature-resistant flame-retardant magnesium oxysulfate plate is characterized by comprising the following steps: the preparation method of the high-temperature-resistant flame-retardant magnesium oxysulfate plate comprises the following steps of:
s1, presetting equipment, namely firstly assembling a base, a driving guide rail, a bearing keel, a mixing tank, a buffer tank, a feeding pump, a feeding nozzle, a main conveying roller way, an auxiliary conveying roller way, a flattening machine, a sizing roller, a sizing pump, a maintenance cavity, a forming die and a driving circuit, simultaneously communicating the feeding pump with a bonding glue solution supply system, adding fluid retardant into the buffer tank for later use, adding each raw material forming the magnesium oxysulfate composite coating into the buffer tank, and continuously stirring and mixing for later use;
s2, presetting a bearing core, conveying the cut bearing core through a main conveying roller way, coating glue on the lower end face of the bearing core by a glue coating roller connected with the front end face of a base in the conveying process, then adhering the lower end face of the bearing core through an alkaline glass fiber net by a flattening machine, conveying the adhered bearing core to an auxiliary conveying roller way and dropping the bearing core into a forming die of the auxiliary conveying roller way, wherein the bearing core is conveyed to the forming die and is matched with a feeding nozzle through a feeding pump in advance, and a magnesium oxysulfate composite coating in a mixing tank is paved at the bottom of the forming die in advance;
s3, primarily molding the board, adjusting the positions of the bearing keel and each device connected with the bearing keel by a driving guide rail, firstly, matching a feeding pump and a feeding nozzle, filling fluid fire retardant in a buffer tank into a flame-retardant cavity of the bearing core, then, gluing the upper end surface of the bearing core by using a flattening machine and a gluing roller arranged in the bearing keel, coating an alkaline glass fiber net layer, and sealing the flame-retardant cavity; finally, driving a feeding pump to be matched with a feeding nozzle, filling the magnesium oxysulfate composite coating in the mixing tank into a forming die, coating the magnesium oxysulfate composite coating outside the bearing core and the alkaline glass fiber web layer, and leveling the surface of the magnesium oxysulfate composite coating on the upper end surface of the forming die to obtain a plate blank;
s4, maintenance operation, namely conveying the plate blank obtained in the step S3 to the forming die from the auxiliary roller way into a maintenance cavity for maintenance, wherein the maintenance time is 20-60 minutes, the maintenance temperature is 35-60 ℃, then discharging the plate blank from the maintenance cavity through the forming die, performing spontaneous combustion cooling to normal temperature, and then standing for 1-10 hours to complete the maintenance operation;
and S5, demolding the plate blank into a forming die after curing is completed, taking out the plate blank to obtain the finished high-temperature-resistant flame-retardant magnesium oxysulfate plate, and cleaning the demolded forming die and returning to the step S1 for recycling.
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