1366 results about "Fiberboard" patented technology

According to the low-expansion ceramic fiber board and the preparation method thereof, high-purity aluminum silicate fibers and refined cordierite powder are compounded, and the nanoscale permeation effect of ammonia type silica sol is combined, so that the fibers and the powder form a three-dimensional network bonding structure, and the thermal expansion coefficient is reduced; the wettability of the combination of the fibers and the powder is remarkably improved by a pre-dispersion process of the cationic starch, and the block mass rate is reduced; the vacuum-assisted compression molding and the gradient calcining process are synergistic, so that the density uniformity of the product is improved, and high-temperature cracking is avoided.

According to the emulsion mixing equipment applied to the mixing field and used for aluminum oxide composite fiberboard production, through a guide cylinder which forms an annular gap with the inner wall of a tank body in an enclosing mode and a stirring assembly arranged on the lower portion of the guide cylinder, raw materials circularly flow between the annular gap and an inner cavity of the guide cylinder, and the stirring assembly and a shearing assembly act synergistically; firstly, raw materials fully flow, components are promoted to be uniformly dispersed, local concentration difference is avoided, a foundation is laid for stable emulsification, agglomeration and precipitation are reduced, the emulsification efficiency and quality are improved, meanwhile, by means of a plurality of heat exchange structures such as a tank shell wall cooling clamping cavity, a spiral heat exchange pipe, an emulsification stator inner heat exchange channel and a guide cylinder shell wall spiral channel, sufficient heat exchange is achieved, and the emulsification efficiency and quality are improved. The raw material temperature is effectively controlled, heat accumulation and overheating are reduced, and the gelation probability is reduced.

The invention relates to the technical field of gypsum fiberboard raw material treatment, in particular to a plant fiber for a gypsum fiberboard and a preparation method and application thereof. Compared with the prior art, the preparation method provided by the invention adopts specific process steps, plant fiber raw materials are softened by using a supersaturated calcium hydroxide solution to partially remove lignin, the treated plant fiber slurry is introduced into a sulfuric acid solution for neutralization in the water washing process, and generated nano-scale calcium sulfate particles are attached to the surfaces of the plant fibers, so that the surface of the plant fibers is uniform. The plant fiber coagulant plays a role of a coagulant during production of the gypsum fiberboard, and the plant fiber meeting the requirements of production of the gypsum fiberboard is prepared. The preparation method provided by the invention is low in cost, and the gypsum fiberboard prepared from the obtained plant fiber for the gypsum fiberboard has relatively high mechanical property indexes and meets the performance requirements of boards for building decoration.

The present application provides a mineral wool fiber board and a method of preparing same, and belongs to the technical field of mineral wool fibers. The method of preparing the mineral wool fiber board provided in the present application comprises the following steps: providing mineral wool fibers, the materials for preparing said mineral wool fibers comprising basalt, steel slag, dolomite, and mineral wool solid waste; crushing, carding, and dispersing the mineral wool fibers, wherein water, a water repellent, and a flame retardant are added during the crushing process, thus obtaining mineral wool staple fibers; uniformly mixing the mineral wool staple fibers with an adhesive, uniformly spreading, and then performing pre-molding under the introduction of steam, thus obtaining a pre-formed board; and hot pressing the pre-formed board to obtain mineral wool fiber board, the mass percentage content of the adhesive in the mineral wool fiber board being 8-14%. The mineral wool fiber board provided in the present application is high-strength and has good fire resistance, water resistance, weather resistance, and air permeability.

The invention discloses a method and device for predicting abrasive particle impact damage on the surface of a carbon fiber plate, relates to the field of aerospace material performance research, and can solve the problem that the evolution process of damage to the carbon fiber plate caused by micro-scale abrasive material impact cannot be directly observed and obtained in real time at the present stage, and the method comprises the steps that a gas-solid two-phase flow field model in a nozzle is established; setting a discrete phase injection source in CFD simulation software, and determining abrasive particle motion data according to the gas-solid two-phase flow field model in the nozzle after grid division; establishing a three-dimensional model of the abrasive particles in finite element modeling simulation software and carrying out grid division; a carbon fiber plate model is established in explicit dynamics simulation software, the abrasive particle three-dimensional model obtained after grid division is imported into the carbon fiber plate model, the initial impact speed of the abrasive particles on the carbon fiber plate model is set according to abrasive particle motion data obtained through calculation of CFD software, and the damage result of the carbon fiber plate is determined through impact simulation calculation of the abrasive particles on the carbon fiber plate. The method is used for simulating and predicting the damage caused by impact of the microscale abrasive on the carbon fiber plate.

The invention belongs to the technical field of preparation of ceramic materials, and provides a preparation method of a low-expansion high-strength ceramic fiber board. The preparation method comprises the following steps: mixing ceramic powder and fibers in water according to a certain proportion, and dispersing in ultrasonic equipment; adding a flocculating agent, and slowly stirring to obtain a flocculated block mass; putting the flocculated block mass into a mold for shaping, and separating the flocculated flocculated block mass from water through a filtering device; putting the mold filled with the flocculation block into a drying oven, and drying to obtain a block body consisting of loose fibers and ceramic powder; putting the mold filled with the loose blocks into silica sol for dipping, and removing redundant silica sol through a filter pressing device to obtain a ceramic fiber board; and drying and sintering the pressed ceramic fiber board to finally obtain the high-strength ceramic fiber board. The strength and hardness of the ceramic fiber board are greatly improved, and compared with a traditional silica sol fiber board dipping technology, the preparation technology effectively improves the dipping efficiency and the dipping integrity of the fiber board, and the service performance of the fiber board under the extreme condition is improved.

The present invention relates to a composition (the composition of the invention) comprising a component A consisting of a polylysine component, an XL component and a fibrous component consisting of at least one fibrous element comprising plant fibers, and wherein the fibrous element is free of any other fibers other than plant fibers, and wherein the component A consists of a polylysine component, an XL component, and a fibrous component consisting of at least one fibrous element comprising plant fibers. And the composition does not contain any fibers other than the plant fibers of the fiber component. The invention further relates to a method for obtaining an object from the composition according to the invention. The invention further relates to objects (objects of the invention) obtained by said method, such as sheets, strips, bars, strips, films, cloths, containers, panels, panels, beams, frames, slats, engineered wood, such as fiberboards. The invention further relates to an article (article of the invention) comprising a) a component that is solid at 23 DEG C and 1 atm; and one or both of b) and c) wherein b) is the composition of the invention and c) is the object of the invention. The invention further relates to various uses of any one or any combination of the composition of the invention, the object of the invention and the article of the invention.

The invention relates to the technical field of polyester fiberboard production, and provides polyester fiberboard production integrated equipment with an automatic waste recycling function, the polyester fiberboard production integrated equipment comprises a recycling box, a material guide groove and a solid-liquid separation box, a material crushing and slicing assembly and a high-pressure water washing assembly are arranged in the recycling box, and the high-pressure water washing assembly is located below the material crushing and slicing assembly; waste materials are sliced and cleaned through cooperation of the material crushing and slicing assembly and the high-pressure water washing assembly, the material guide groove is obliquely formed in the bottom of the recycling box, the material crushing and knocking assembly is arranged above the material guide groove, the electromagnet set is installed below the material guide groove, and secondary cleaning and metal impurity removal are conducted on the waste materials through cooperation of the material crushing and knocking assembly and the electromagnet set. And one end, far away from the recycling box, of the material guide groove extends into the solid-liquid separation box, and through the technical scheme, the problem that the cleaning efficiency is low when an existing polyester fiber board production device recycles and treats waste materials with more impurities and a large amount is solved.

The present invention relates to a composition (the composition of the invention) comprising a component A consisting of a polylysine component, an XL component and a fibrous component consisting of at least one fibrous element comprising plant fibers, and wherein the fibrous element is free of any other fibers other than plant fibers, and wherein the component A consists of a polylysine component, an XL component, and a fibrous component consisting of at least one fibrous element comprising plant fibers. And the composition does not contain any fibers other than the plant fibers of the fiber component. The invention further relates to a method for obtaining an object from the composition according to the invention. The invention further relates to objects (objects of the invention) obtained by said method, such as sheets, strips, bars, strips, films, cloths, containers, panels, panels, beams, frames, slats, engineered wood, such as fiberboards. The invention further relates to an article (article of the invention) comprising a) a component that is solid at 23 DEG C and 1 atm; and one or both of b) and c) wherein b) is the composition of the invention and c) is the object of the invention. The invention further relates to various uses of any one or any combination of the composition of the invention, the object of the invention and the article of the invention.

The invention discloses a honeycomb structure wave-absorbing composite material based on resistive films and a preparation method thereof. The honeycomb structure wave-absorbing composite material comprises a glass fiber board skin layer, a first resistive film layer, a first honeycomb dielectric layer, a second resistive film layer, a second honeycomb dielectric layer, a third resistive film layer and a metal backboard. All the layers are connected through a bonding layer. According to the honeycomb structure wave-absorbing composite material based on the resistive film and the preparation method thereof, the sheet resistance in the first resistive film layer, the second resistive film layer and the third resistive film layer is controllable and customizable, so that impedance matching can be regulated and controlled by regulating and controlling the sheet resistance gradient of the resistive film, the process parameters are more stable, the broadband (2-18GHz) wave-absorbing performance is good, and the application prospect is wide. The first honeycomb dielectric layer and the second honeycomb dielectric layer do not need secondary processing, so that the wave-absorbing performance is endowed, and the resistive film is easy to prepare; in addition, the wave-absorbing composite material prepared by the invention is thin in structural material thickness, light in weight, capable of effectively absorbing a wide frequency band and easy to process.

The invention discloses a carbon fiber plate prestress detection device and a detection method, which are applied to the technical field of carbon fiber plate prestress detection, and comprise a detection table, a driving mechanism arranged on the left side of the detection table and a clamping mechanism arranged in the detection table, the driving mechanism is used for driving the carbon fiber plate on the pulling and pressing clamping mechanism to perform prestress detection, and the clamping mechanism is used for clamping the carbon fiber plate and adjusting the clamping position of the carbon fiber plate; the clamping mechanism comprises a movable end and a fixed end, the movable end comprises a first clamping assembly and a tension and compression sensor, and the first clamping assembly comprises a back plate, a bottom plate, a top plate and a clamping plate in sliding connection with the back plate, and the bottom plate and the top plate are fixedly connected with the back plate; a first groove is formed in the bottom plate, a first sliding seat is arranged in the first groove, the first sliding seat is in sliding connection with the bottom plate, and a pressure sensor is fixedly connected in the first groove of the bottom plate.

The present invention relates to the field of ceramic technology, and more specifically, to an alumina ceramic fiber board with a fireproof and heat-insulating function and a nano-ceramic coating, which sequentially includes a nano-ceramic coating and an alumina ceramic fiber board from top to bottom; for the nano-ceramic coating, calculated by mass, the raw materials include: 50-70 parts of an adhesive, 10-20 parts of hydroxylated layered Ti3C2 / silica hollow spheres / ceramic particles, 0.1-0.5 parts of 2-acrylamido-2-methylpropanesulfonic acid sodium salt, 0.01-0.1 parts of an initiator, and 10-20 parts of water; the present invention solves the problem that the ceramic fiber board in the prior art cannot meet the fireproof and heat-insulating properties required for ceramic fiber boards in the construction field, and at the same time has excellent adhesion, corrosion resistance, strength, antibacterial property, and hydrophobic and oleophobic properties.

The utility model discloses a high-strength and light-weight internal cover plate structure which comprises a lower HDPP plate, a carbon fiber plate is fixedly bonded to the lower HDPP plate through adhesives, glass fiber plates are fixedly bonded to the two ends of the carbon fiber plate through adhesives, and the upper outer surface and the lower outer surface of the carbon fiber plate and the upper outer surface and the lower outer surface of the glass fiber plates are all located on the same horizontal plane. An upper HDPP plate is fixedly bonded to the upper portion of the carbon fiber plate and the upper portion of the glass fiber plate through adhesives, positioning holes are formed in the two ends of the upper HDPP plate, a plurality of evenly-distributed magnet pieces are fixedly bonded to the upper surface of the upper HDPP plate through magnet adhesives, a plurality of PMI foam pads are fixedly bonded to the upper surface of the upper HDPP plate through UV adhesives, and the PMI foam pads are fixedly bonded to the lower surface of the lower HDPP plate through UV adhesives. Both the lower HDPP plate and the upper HDPP plate are made of high-density polypropylene materials, so that the supporting sleeve for the tablet personal computer has the comprehensive use performance of high strength, light weight, deformation resistance and aging resistance, the practicability of the supporting sleeve for the tablet personal computer is effectively improved, the service life of the supporting sleeve is effectively prolonged, and the inner layer structure of the supporting sleeve for the tablet personal computer can be effectively reinforced.

The present invention relates to the technical field of sheet defect detection, and specifically discloses a surface defect detection device and method based on the production of waterproof medium density fiberboard, including a defect detection box. A vision sensor is provided inside the defect detection box, and the vision sensor is used to identify and detect surface defects of the fiberboard to be detected. There are also a sheet feeding port and a sheet discharging port, and the sheet feeding port and the sheet discharging port are arranged on the side of the defect detection box; a first camera, the first camera is installed above the defect detection box, the recognition direction of the first camera is downward, and the first camera is used to identify the object below it; two second cameras, the two second cameras are respectively installed at the front and rear ends of the defect detection box, the recognition directions of the two second cameras are horizontal, and the second cameras are used to identify the objects within their horizontal ranges.

The invention relates to a multi-dimensional evaluation method for the non-sticking performance of emulsified asphalt, which comprises the following steps: (1) substrate treatment: selecting a fiberboard as a base material, drying, polishing with abrasive paper to form a test surface with the roughness deviation of + / -0.5 mu m, and spraying a 0.08-0.12 mm silicone oil film to simulate a pavement demolding layer; (2) preparing a test piece: spraying emulsified asphalt at the precision of 480-520g / m, and maintaining at constant temperature and constant humidity until demulsification is completed; (3) simulating a rolling test: dynamically rolling the colored rubber strip-emulsified asphalt interface at the speed of 20-26 times / min by adopting a 590-610N load test wheel; and (4) detecting the adhesion amount: uncovering the rubber strip at a constant speed at an included angle of 55-65 degrees, and calculating the wheel adhesion rate through the mass difference. The method can comprehensively and accurately evaluate the non-sticking performance of the emulsified asphalt, has the characteristics of simple operation steps and capability of highly simulating the real condition of a road surface, not only ensures that the test result is reliable, but also is low in cost and short in time consumption, and has a great significance for research and development, quality control and reasonable application in practical engineering of the emulsified asphalt. And reliable technical support and data reference are provided.

The invention relates to the technical field of carbon fiber plate detection, and discloses a carbon fiber processing quality detection device and a detection method.The carbon fiber processing quality detection device comprises a workbench, the upper surface of the workbench is provided with two detection piece bearing assemblies which are used for placing a carbon fiber plate needing to be detected in a side-standing mode, and the two detection piece bearing assemblies are arranged in a mirror image mode; an extrusion unit is arranged on the upper surface of the workbench and located on one side of the two detection piece bearing assemblies and used for extruding the side edge of the carbon fiber plate, and a bending degree detection unit is arranged on the upper surface of the workbench and located on the other side of the two detection piece bearing assemblies and used for detecting the resilience degree of the extruded carbon fiber plate. According to the invention, through the arrangement of the detection piece bearing assembly, a carbon fiber plate to be detected can be placed on the device in a side-standing manner, so that the error of an experiment result caused by the weight of the carbon fiber plate when the carbon fiber plate lies flat is effectively reduced.

The disclosure relates to compositions including a constituent—A, which constituent—A consists of a polylysine component, a XL-component, and a fibrous component which fibrous component consists of at least one fibrous element which fibrous element includes vegetable fibers, and where the fibrous element is free of any fibers other than the vegetable fibers, where and the composition is free of any fibers other than the vegetable fibers of the fibrous component. The disclosure further relates to processes for obtaining an object from the compositions. The disclosure further relates to objects such as sheets, tapes, sticks, strips, films, cloths, containers, boards, panels, beams, frames, planks, engineered wood e.g. fibreboards obtained by said processes.

The invention discloses an automatic three-dimensional warehouse system for fiberboards, and relates to the technical field of three-dimensional warehouse equipment. Comprising a plurality of U-shaped outer frames, and the plurality of U-shaped outer frames are sequentially stacked from top to bottom; the number of the placing grooves is two, and the two placing grooves are formed in the two ends of a U-shaped opening of the U-shaped outer frame respectively. The number of the adjusting brackets is two, and one adjusting bracket is movably arranged in each containing groove. The number of the storage plate assemblies is multiple, and two storage plate assemblies are arranged in each U-shaped outer frame side by side. The lifting machine is arranged outside the U-shaped outer frame; the adjusting bracket comprises a bracket horizontally arranged on the inner bottom surface of the placing groove in a sliding manner, and a bracket groove is formed in the top surface of the bracket; the storage plate assembly comprises a middle plate, the two opposite ends of the middle plate are slidably arranged on the two supporting grooves correspondingly, and a plurality of extending plates are rotationally connected to the outer circumferential wall of the middle plate through rotating shafts in the circumferential direction. The fiberboard storage device has the advantages that fiberboards of various sizes can be conveniently placed, and the utilization rate of a warehouse is increased.

The invention provides a calcination-free ceramic fiber board and a preparation method thereof.The method comprises the following steps that S10, ceramic fibers, ceramic filler and a silane coupling agent are dispersed in water, the silane coupling agent is grafted to the surfaces of the ceramic fibers and the ceramic filler, and a first mixed solution is obtained; wherein the silane coupling agent comprises an amino silane coupling agent and / or a fluorine-containing silane coupling agent; s20, adding an epoxy group silane coupling agent into a silica sol binder to graft epoxy groups on the surface of silicon dioxide in the silica sol binder to obtain a second mixed solution; and S30, the first mixed solution and the second mixed solution are mixed to obtain slurry, the slurry is subjected to wet vacuum forming, and the calcination-free ceramic fiber board is obtained after drying. The calcination-free ceramic fiber board has good heat resistance and strength.

The utility model relates to the technical field of glass fiber board processing, and discloses a pressing device for glass fiber board processing, which comprises a processing table and a support arranged at the upper end of the processing table, a pressing component is arranged on one side of the support, a bearing plate is further arranged at the upper end of the processing table, and a cooling component and a starting cylinder part are arranged at the upper end of the processing table. The pressing plate can be pushed to move, so that the pressing plate moves towards the bearing plate, the glass fiber plate can be pressed, then the motor is started, the threaded rod is driven to rotate, the bearing plate can be driven by the threaded block to move, the glass fiber plate can be moved to be arranged below the frame body, and then the motor is started to drive the fan to rotate. According to the air blowing device for the glass fiber board, blown-out air can be exhausted through a breathable plate, the surface of the glass fiber board can be blown, so that the temperature can be reduced, a mini electric push rod is started, an ejection plate can be driven to move, and the laminated glass fiber board can be ejected out and taken out conveniently.

The present invention relates to the technical field of anchoring and relates to a carbon fiber plate anchoring device with a concave surface. The carbon fiber plate anchoring device with the concave surface comprises an anchor base and an anchor block, wherein a slot is provided in the anchor base, the slot has a shape matching with that of the anchor block and is configured for inserting the anchor block, the anchor block is configured as a compression portion on one side for fitting with an inner side wall of the slot, and is configured as a contact portion on the other side for fitting with a carbon fiber plate, and the cross section of the compression portion is a concave surface that is lower in the middle and higher at both ends. In the present application, cooperation between the components alters the force transmission mechanisms between the anchor block and the anchor base, and between the anchor block and the carbon fiber plate. During loading, the central part of the anchor block bears a higher stress and is less likely to bulge, thereby preventing stress concentration at two ends of the carbon fiber plate and instead concentrating the stress more in the central part of the anchor block. Moreover, the overall stress is dispersed toward two ends of the anchor block, resulting in a more uniform stress distribution on the carbon fiber plate, and a better anchoring effect of the anchoring device.

The invention relates to the technical field of density fiberboard conveyors, in particular to an intelligent suspension conveying device for medium density fiberboard production, which comprises a suspension conveyor and two groups of lifting and clamping assemblies, the lifting and clamping assemblies are used for clamping and lifting boards, the suspension conveyor is used for suspending and conveying the boards, and the lifting and clamping assemblies are used for clamping and lifting the boards. The clamping and lifting assemblies are matched with the suspension conveyor, one side of the plate can be lifted to the suspension conveyor, the plate is conveyed in a vertical state in the suspension process, then the horizontal space of the plate can be converted into the vertical space, the plate can be conveyed in the vertical state, the plate can be conveyed in the vertical state, and therefore the plate can be conveyed in the vertical state, and the plate can be conveyed in the vertical state. And meanwhile, one suspension conveyor is matched with the two clamping and lifting assemblies, the clamping and lifting time needed by the clamping and lifting assemblies can be saved, after one plate is hooked, the next plate can be rapidly transferred and hooked, and the suspension space is fully utilized.

The utility model discloses a glass fiber board forming machine, which relates to the technical field of glass fiber board production, and comprises a base, a plurality of support columns are fixedly connected to the bottom of the base, a cooling-water machine is mounted at the top of the base, two vertical plates are fixedly connected to the top of the base, and a pressing mechanism is mounted at the tops of the two vertical plates. A lifting mechanism and a forming mechanism are installed between the two vertical plates, the lifting mechanism is located below the forming mechanism, two buffering mechanisms are arranged between the lifting mechanism and the forming mechanism, and a circulating mechanism is installed at the top of the base. The cooling device has the beneficial effects that during cooling, the air cylinder moves to drive the connecting frame to move upwards, so that the heat conducting plate is driven to move upwards until the connecting frame makes full contact with the bottom of the mold, heat in the mold is absorbed through heat conduction, and after cooling is completed, the air cylinder moves to drive the connecting frame to move downwards, so that the heat conducting plate is driven to move downwards, and the heat conducting plate is separated from the mold; and when the glass fiber board raw materials are heated next time, heat loss is avoided.

The present application relates to a graphite sintering furnace having four spliced insulation panels that can be removably spliced to form a square insulation lining. The insulation lining is mounted on a support seat, and an adjustable tightening device abuts and tightens against a second side surface. Multiple adjustable tightening devices are used to tighten the four spliced insulation panels. The spliced insulation panels are, from the outside to the inside, sequentially composed of a first ceramic fiber board layer, an asbestos felt layer, a first graphite felt layer, and a first graphite board layer, with the asbestos felt layer and the first graphite felt layer being filled and disposed between the first ceramic fiber board layer and the first graphite board layer. Only the burned spliced insulation panels need to be replaced, without replacing the entire insulation lining, thereby avoiding waste of a portion (the unburned side) of the insulation lining and reducing the replacement and maintenance costs of the insulation lining. Furthermore, the spliced insulation panels have good thermal insulation performance, thereby improving the thermal insulation performance of the insulation lining and preventing heat dissipation within the insulation lining to the greatest extent possible, thereby resolving related problems in the prior art.

The invention relates to equipment for measuring the thickness of a carbon fiber plate. The equipment comprises complete equipment, a measuring cavity and a thickness measuring mechanism, the measuring cavity is arranged on the complete machine equipment in a milling mode, a door plate is hinged to an opening of the measuring cavity, a control key is arranged on the complete machine equipment, and the thickness measuring mechanism is arranged in the measuring cavity. According to the equipment for measuring the thickness of the carbon fiber plate, the laser sensor shell can move in the X direction and the Y direction through the first threaded rod and the second threaded rod, the thickness of the carbon fiber plate can be conveniently measured in all directions, and meanwhile when the laser sensor shell moves to the position of the adjusting frame, due to the fact that the adjusting frame partially shields the carbon fiber plate, the thickness of the carbon fiber plate can be accurately measured. A convex ring acts on a linkage plate through an arc plate, and the linkage plate enables a single adjusting frame at a corresponding position not to limit the carbon fiber plate under the linkage of a linkage frame, a gear and a U-shaped frame, so that the thickness of the carbon fiber plate can be accurately measured without a dead angle.

A method for testing the heat insulation performance of a thermal barrier coating comprises the following steps: preparing a set of plasma flame spraying equipment, preparing a metal sheet, and spraying the thermal barrier coating on the surface of the metal sheet to prepare a coating sample; preparing a high-temperature electric furnace and an aluminum oxide fiberboard with the same size as a furnace door brick, embedding the metal sheet into the aluminum oxide fiberboard, and exposing the coating surface and the back surface of the metal sheet; opening a furnace door of the high-temperature electric furnace, sealing the furnace door by using the cut aluminum oxide fiber plate as a furnace door brick, and embedding the metal sheet into the aluminum oxide fiber plate in the direction that the coating surface faces the interior of the furnace; setting a heating program of the electric furnace to heat the electric furnace to a temperature required to be tested; testing the temperature of the back surface, exposed in the air, of the metal sheet by using a laser thermometer; the steps are repeated for multiple times, the difference value between the furnace temperature and the back temperature is recorded, and the average value is calculated and can serve as the judgment basis of the heat insulation performance of the thermal barrier coating. The method is simple and convenient to operate, accurate in test condition and high in practical application value.

The invention discloses a fiberboard production waste gas atomization treatment device, and relates to the technical field of waste gas treatment equipment. Comprising a spraying tower body, a partition plate is arranged in the spraying tower body and divides the interior of the spraying tower body into an upper cavity and a lower cavity, the upper cavity and the lower cavity are communicated through a plurality of ventilation pipes arranged on the partition plate, a drainage pipe is arranged on the upper cavity, and an air inlet pipe is arranged on the lower cavity; the spraying assembly is arranged in the upper cavity; the gas filtering assembly is arranged in the lower cavity; the spraying assembly comprises a central column body arranged at the top in the upper cavity, a plurality of spraying pipes are hinged to the peripheral wall of the central column body in the circumferential direction, and a plurality of spraying heads are arranged on the peripheral walls of the spraying pipes; the gas filtering assembly comprises open grooves formed in the two opposite side walls of the lower cavity, a plurality of filtering plate boxes are movably and horizontally arranged in the open grooves in a penetrating mode, and a plurality of filtering plate bodies are movably arranged in the filtering plate boxes in an inserted mode. The filtering device has the advantages that the filtering effect is improved, and the blockage phenomenon is avoided.

The invention discloses a high-strength stain-resistant melamine veneer and a preparation method thereof, and belongs to the technical field of veneer preparation. The preparation method of the high-strength stain-resistant melamine veneer comprises the following steps: step 1, adding melamine and a nano reinforcing agent into distilled water, uniformly stirring and mixing to obtain a mixed emulsion, putting impregnated paper into the mixed emulsion, soaking, and taking out to obtain composite impregnated paper; 2, a hard fiberboard is selected as a base material, the composite impregnated paper is flatly placed on the surface of the base material, then the base material is placed on a pressing machine, hot pressing and cooling are conducted, and a melamine-containing veneer is obtained; and 3, the surface of the melamine veneer is sprayed with a stain-resistant coating, drying is conducted, and the high-strength stain-resistant melamine veneer is obtained. The veneer prepared by the method has excellent strength and stain resistance.

The utility model relates to the technical field of fiberboard production, and discloses an environment-friendly fiberboard glue mixing device which comprises a stirring kettle, a stirring shaft is rotationally installed in the middle of the interior of the stirring kettle, and a pretreatment box is fixedly installed on the right side of the upper end of the stirring kettle. Uniformly distributed stirring rods fixedly sleeve the outer side of the transmission shaft, a switch roller is rotatably mounted in the stirring kettle in the middle of the lower end of the pretreatment box, a discharging groove is formed in the middle of the switch roller, and a uniform spreading plate is fixedly mounted in the stirring kettle close to an opening in the lower end of the pretreatment box; and the stirring shaft penetrates through the uniform spreading plate and is fixedly sleeved with a scraping plate. According to the device, the additive and the glue are fully premixed, and the mixed glue falls on the uniform spreading plate and is further spread by the scraping plate, so that the glue is more uniformly distributed when falling on fibers, the preparation time is shortened, the stirring efficiency is improved, and fiberboard raw materials are more thoroughly and uniformly mixed.

The present disclosure relates to an aqueous dispersion binding agent for use in the manufacture of medium density fiberboard (MDF) and high-density fiberboard (HDF). The aqueous binding agent comprises a polyol component, soy flour, a sulfite agent, a surfactant, and an anti-foam agent. The present disclosure also provides a method for making MDF and HDF using an aqueous binding agent.