CN114436572A - Graphite modified polystyrene solid lightweight concrete wallboard and preparation method thereof - Google Patents
Graphite modified polystyrene solid lightweight concrete wallboard and preparation method thereof Download PDFInfo
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- CN114436572A CN114436572A CN202210145363.9A CN202210145363A CN114436572A CN 114436572 A CN114436572 A CN 114436572A CN 202210145363 A CN202210145363 A CN 202210145363A CN 114436572 A CN114436572 A CN 114436572A
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- modified polystyrene
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- wallboard
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- 239000010439 graphite Substances 0.000 title claims abstract description 68
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 68
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- 238000002360 preparation method Methods 0.000 title claims abstract description 18
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- 239000000203 mixture Substances 0.000 claims description 33
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- 238000005507 spraying Methods 0.000 claims description 6
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- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 5
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- UGZVNIRNPPEDHM-SBBOJQDXSA-L calcium;(2s,3s,4s,5r)-2,3,4,5-tetrahydroxyhexanedioate Chemical compound [Ca+2].[O-]C(=O)[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O UGZVNIRNPPEDHM-SBBOJQDXSA-L 0.000 claims description 4
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- 238000007711 solidification Methods 0.000 claims description 2
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- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000011449 brick Substances 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical group [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
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Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/74—Removable non-load-bearing partitions; Partitions with a free upper edge
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/74—Removable non-load-bearing partitions; Partitions with a free upper edge
- E04B2/7401—Removable non-load-bearing partitions; Partitions with a free upper edge assembled using panels without a frame or supporting posts, with or without upper or lower edge locating rails
- E04B2/7403—Removable non-load-bearing partitions; Partitions with a free upper edge assembled using panels without a frame or supporting posts, with or without upper or lower edge locating rails with special measures for sound or thermal insulation including fire protection
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/40—Porous or lightweight materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Physics & Mathematics (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a graphite modified polystyrene solid lightweight concrete wallboard and a preparation method thereof. The graphite modified polystyrene is prepared by foaming graphite polystyrene twice under specific conditions. The graphite modified polystyrene solid lightweight concrete wallboard can meet the requirements of light weight and high strength at the same time, is formed by one-step pouring, has good integral gelling and curing effects, is free of panel compounding, can not be peeled and separated, has good integrity and stability, and has the service life synchronous with that of a building; convenient for secondary decoration, can be freely grooved and pipe-distributed and can not crack. The fireproof performance is good, the combustion grade of the wallboard is A grade, and the fireproof limit is more than 4 hours.
Description
Technical Field
The invention relates to the technical field of prefabricated interior wallboard for buildings, in particular to a graphite modified polystyrene solid lightweight concrete wallboard and a preparation method thereof.
Background
The building wall is built by adopting red bricks and shale perforated bricks earlier, the ecological damage and the high volume weight influence the building load requirement, the use of the red bricks and the shale perforated bricks is limited at present, and then cement hollow bricks and aerated concrete blocks appear on the market, wherein the cement hollow bricks have the advantages of low cost, high strength and obvious defects, namely no earthquake resistance, large self weight and poor hanging force; the aerated concrete block has the advantages of light weight, good heat insulation effect and low strength, high water absorption, poor impact resistance and low impermeability. With the continuous development of the technology, magnesite partition boards, GRC partition boards, calcium silicate composite light partition boards, autoclaved light concrete partition boards and the like appear in succession, and the magnesite partition boards, the GRC partition boards, the calcium silicate composite light partition boards, the autoclaved light concrete partition boards and the like respectively have advantages and disadvantages. The magnesite partition board has the advantages of light weight and water resistance, and has the defects of poor sound insulation, halogen return, poor aging resistance and metal member abrasion; GRC partition boards have the advantages of high strength and light weight, and have the disadvantages of poor breaking resistance and easy cracking of board seams. The calcium silicate composite light partition wall has the advantages of light weight, energy conservation and solid structure, and has the disadvantages of plate surface delaminating, plate seam cracking and aging resistance, and the very fatal defect that the panel contains asbestos which is identified as carcinogen by the international cancer research center. The autoclaved lightweight concrete wallboard has the advantages of heat preservation, heat insulation and light weight, and has the defects of low strength, high water absorption and poor hanging capability.
The assembly type building is a building which is formed by transferring a large amount of field operation work in the traditional building mode to a factory, processing and manufacturing building components and accessories (such as floor slabs, wall plates, stairs, balconies and the like) in the factory, transporting the components and accessories to a building construction site, and assembling and installing the components on the site through a reliable connection mode. The light wallboard is an indispensable member of the fabricated building, and the light wallboard is used as a member of a non-bearing inner envelope structure of the fabricated building, although the load requirement is not met, a certain compressive strength needs to be achieved, and the weight is lighter as possible, so that the load of the building can be reduced, the construction is convenient, the cost of a main structure is reduced, and the manufacturing cost of the whole project is reduced. Although the light wallboard used for the fabricated building at present meets the requirement of light weight, the problems of hollowness, low strength, insufficient nail holding power, reduced mechanical property after water absorption expansion and the like generally exist, and plastering treatment is needed due to poor surface flatness.
Disclosure of Invention
The invention aims to provide a graphite modified polystyrene solid lightweight concrete wallboard which is solid, light in volume weight, high in strength, strong in hanging force and nail holding force, flat in surface, free of plastering, economical and practical, can be applied to prefabricated inner and outer partition walls of various buildings, and is particularly suitable for prefabricated inner partition walls of assembly buildings.
The technical scheme of the invention is detailed as follows:
the graphite modified polystyrene solid lightweight concrete wallboard is prepared by taking a steel wire mesh frame and glass fiber mesh cloth as frameworks and pouring a mixture and then solidifying the mixture, wherein the mixture is prepared by mixing the following components in parts by weight:
the compound additive is a mixture of sodium sulfate, calcium formate, calcium saccharate powder and mineral powder;
the graphite modified polystyrene is prepared by the following method: carrying out first foaming on graphite polystyrene under the condition of 0.6Mpa steam pressure; and after the first foaming is finished, air-drying and cooling, curing for 2 hours, then carrying out second foaming under the condition of 0.6Mpa steam pressure, and naturally curing for 5-6 hours after the second foaming is finished to obtain a finished product.
The graphite polystyrene is prepared by adding graphite, foaming agent and other additives into polystyrene material, wrapping graphite on the inner wall of cell wall to form fireproof layer, and making into granule, or making into modified polystyrene foam plastic plate with closed cell structure by mold, which is commercially available product, such as Pasteur
And (6) GPS. In the technical scheme, the steam refers to steam generated after water is heated, and the steam temperature is about 164 ℃ when the steam pressure is 0.6 Mpa. Through heating and pressurizing, steam can enter graphite polystyrene beads for condensation, heat is released to soften internal tissues, the internal tissues are foamed and expanded, corresponding density is changed, the expansion degree of the expansion degree depends on the temperature and pressure of the heating steam, the expansion degree of the foaming under the conditions can meet the requirements of light weight and hardness at the same time, cooling and curing are needed after the expansion degree reaches a certain degree, and then the heating and pressurizing are carried outAnd foaming for the second time to improve the hardness and strength of the final product, so that the composite material can be suitable for manufacturing solid wallboards.
In the components, cement and filling materials are used as basic cementing materials, the steel wire mesh frame and the glass fiber mesh cloth are used as frameworks, the graphite modified polystyrene is matched, and then the compound additive is added, so that the finished product microstructure can be mutually cross-linked, condensed and stabilized, the fine powder, the graphite modified polystyrene tissue, the mesh cloth and the steel wire mesh frame are in step-by-step stable transition in granularity, the strength and the supporting performance are improved on the whole, meanwhile, the product has the advantages of practice, light weight, fire resistance, strong nail-holding power and the like, and compared with the conventional wall body, the requirements of the assembly type building on the wall body can be met. The graphite modified polystyrene has a strong supporting effect and a very low volume weight, the strength is improved on the premise of reducing the weight of the product, and the nail-holding power and the heat preservation performance of the product are also improved. The steel wire mesh frame and the glass fiber mesh cloth can keep the mechanical property of the product in long-term use and prolong the service life.
Optionally or preferably, in the graphite modified polystyrene solid lightweight concrete wallboard, the lightweight aggregate is one or a mixture of more of perlite, ceramsite, polystyrene and wood chips.
Optionally or preferably, in the graphite modified polystyrene solid lightweight concrete wallboard, the filler is one or a mixture of more of coal ash, machine-made sand, mineral powder, gypsum powder, slag and slag. The main component of the machine-made sand is calcium carbonate particles; the main component of the mineral powder is calcium silicate powder; the main component of the gypsum powder is calcium sulfate powder; slag is coal slag, and the main component of the slag is calcium silicate particles.
Optionally or preferably, in the graphite modified polystyrene solid lightweight concrete wallboard, the mass percentages of the components in the compound additive are 30% of sodium sulfate, 20% of calcium formate, 10% of sugar calcium powder and 40% of mineral powder. The calcium saccharate is calcium saccharate. The mineral powder in the compound additive is mainly used as a carrier, and the rest three materials are mutually matched in a water-containing environment, so that the compound additive has the effects of early strength, quick setting, lubrication, reinforcement, water reduction, plasticization, adhesion, sealing, water prevention and the like in the curing process of a mixture.
Optionally or preferably, each solid wallboard comprises two steel wire mesh frames, the distance between each steel wire mesh frame and the surface of the wallboard is 10-15mm, and one side, facing the surface of the wallboard, of each steel wire mesh frame is adhered with glass fiber mesh cloth.
The preparation method of the graphite modified polystyrene solid lightweight concrete wallboard comprises the steps of mixing, stirring and uniformly mixing all the components of the mixture, laying a steel wire mesh frame and glass fiber mesh cloth in a mould, casting and molding at one time, and solidifying and removing the mould.
Optionally or preferably, in the preparation method, the mixing method of the mixture is to mix and stir the cement, the lightweight aggregate, the filler, the compound additive and the water, add the graphite modified polystyrene, stir the mixture into paste, and mix the mixture evenly without layering.
Optionally or preferably, in the above preparation method, the method of laying the steel wire mesh frame and the glass fiber mesh fabric in the mold comprises: the demolding oil and water are mixed according to the proportion of 1:5.6 to obtain diluted demoulding oil, standing for 15 minutes, adding the diluted demoulding oil into a spraying machine, respectively spraying a large plate, a bottom plate and a cover plate of the mould, and then rolling and coating the left plug and the right plug by using a brush; assembling the dies, gluing the steel wire net frames and sticking the grid cloth, placing two steel wire net frames in each die, enabling one side of the glass fiber net grid cloth to face outwards, and positioning the steel wire net frames by using clips to enable a gap of 10-15mm to be kept between the steel wire net frames and the dies.
Optionally or preferably, in the preparation method, after the pouring is finished, the mould is vibrated by a vibrating rod, the edge is scraped by a scraper, and the mould is covered by a heat-insulating blanket or enters a constant-temperature pre-curing room when the temperature is lower than 15 ℃ in the solidification process.
Alternatively or preferably, the preparation method further comprises a step of steam curing after curing and demolding. In the steam curing process, a sufficient water environment is provided, so that various chemical active ingredients in the mixture can further undergo chemical reactions, and the strength and durability of the product are improved.
Compared with the prior art, the invention has the following beneficial effects:
according to the graphite modified polystyrene solid lightweight concrete wallboard, graphite modified polystyrene subjected to secondary foaming is added, so that the requirements of light weight and high strength can be met, the wallboard is formed by casting once, the whole gelling and curing effect is good, no panel is compounded, the wallboard cannot be unshelled and separated, the integrity and the stability are good, and the service life is synchronous with that of a building; convenient for secondary decoration, can be randomly grooved and distributed and can not crack. The sound insulation is good, and the sound insulation index is more than 42 dm. The fireproof performance is good, the combustion grade of the wallboard is A grade, and the fire endurance is more than 4 hours.
In addition, the graphite modified polystyrene solid lightweight concrete wallboard also has the following advantages:
1. compared with the autoclaved lightweight concrete wallboard, the autoclaved lightweight concrete wallboard solves the problems of high water absorption rate, poor strength and weak hanging force of the autoclaved lightweight concrete wallboard;
2. compared with the magnesite board, the magnesite board solves the problems of poor sound insulation, halogen return, no heat preservation and corrosion of metal components;
3. compared with the calcium silicate composite board, the problem that the panel is separated from the sandwich layer by layer after the calcium silicate composite board is used for a long time is solved;
4. compared with a hollow plate, the hollow plate solves the problems of heavy volume weight, no sound insulation, poor hanging force and easy cracking of the hollow plate;
5. compared with the gypsum board, the gypsum board solves the problems of no fire prevention and softening in water;
6. the problems of non-fireproof and non-environment-friendly effects of other materials are solved;
7. the problems of poor adhesion with secondary decoration, easy hollowing and falling of the tile and putty coating are solved;
8. the problem of poor bending and seismic resistance of other wallboards is solved;
9. the problems that other wallboards are easy to leak and cannot be used in a humid environment are solved;
10. the problems that all wall boards are poor in nail holding force and single-point hanging force, the slotting and pipe burying are inconvenient to wire, expansion screws need to be driven, and the like, and secondary treatment is needed are solved;
11. the problems of increasing the using area in the sleeve, reducing the standard of structural materials, avoiding plastering and greatly reducing the manufacturing cost are solved.
Drawings
FIG. 1 is a diagram showing a steel wire mesh frame inside a graphite modified polystyrene solid lightweight concrete wallboard entity;
FIG. 2 is a diagram showing the states of the graphite modified polystyrene solid lightweight concrete wallboard, such as hanging force, slotting, pipe arrangement, nailing and plastering-free;
FIG. 3 is a water resistance test and floating state in water of a graphite modified polystyrene solid lightweight concrete wallboard;
fig. 4 is a product state after a fire resistance test of the graphite modified polystyrene solid lightweight concrete wallboard, the board specification: 2400mm 600mm 100mm, burning for 4 hours at the temperature of about 1000 ℃, whitening the surface of the final burning, cracking the surface with the depth of about 15mm, shrinking the EPS after the EPS is heated within the range of 15-50 mm, forming honeycomb independent holes, and having no color and shape change from the surface 50mm to the other surface.
Fig. 5 is a graph showing compression resistance of graphite modified polystyrene solid lightweight concrete wallboard, the board specification: 2400mm 600mm 100mm, 15 people weigh about 900 kg.
Detailed Description
For better understanding of the inventive concept and the specific application of the present invention, the technical solution of the present invention will be explained and illustrated in detail with reference to the preferred embodiments, which, of course, do not limit the scope of the present invention.
First part of graphite modified polystyrene preparation
Under the action of steam and foaming agent, the steam is condensed in the internal space of graphite polystyrene to release heat to soften the graphite polystyrene, so that the graphite polystyrene is foamed and expanded, the volume is increased, the density is changed correspondingly, and the graphite modified polystyrene suitable for wall board is obtained after curing and shaping. The preparation method comprises the following steps:
step one, preparing raw materials: the commercial graphite polystyrene is taken as a raw material and is pulled to the side of a pre-foaming machine hopper (the delivery date of the raw material is not more than 6 months), and a skid plate is needed below the pre-foaming machine hopper to prevent moisture when the pre-foaming machine hopper is placed.
Step two, preheating: and (4) starting the steam generator, and discharging condensed water in the steam tank and the pipeline and condensed water in the compressed air filter device after the steam pressure reaches 0.3 Mpa.
Step three, setting a sending mode: setting the pre-expander in a single-generation mode after the steam pressure reaches 0.6 Mpa; pouring the graphite polystyrene raw material into a preparation hopper of a pre-foaming machine.
Step four, starting automatic pre-foaming: at the moment, the pre-expander is in a full-automatic working state, the feeding spiral pipe feeds the graphite polystyrene in the material preparing hopper into the pre-expander according to a set weight, the graphite polystyrene is uniformly stirred by high-pressure steam and the machine, and the graphite polystyrene begins to expand to a certain multiplying power.
Step five, curing in one step: when the graphite polystyrene is foamed in the pre-foaming machine for a set time, the pre-foaming machine opens a discharge port to discharge a strand of graphite polystyrene, the graphite polystyrene is air-dried and cooled by a fluidized bed and then is conveyed to a strand storage bin through an air pipe, and the graphite polystyrene needs to be cured for 2 hours at normal temperature and then is pre-foamed for the second time. The set time is generally between 120 and 160 seconds.
Step six, setting a two-shot mode: starting automatic pre-foaming, wherein the pre-foaming machine automatically enters cured first-generation graphite polystyrene into the pre-foaming machine through a metering bin through a pipeline for secondary pre-foaming, and when the set time is up, the pre-foaming machine opens a discharge port to discharge second-generation graphite polystyrene, and the second-generation graphite polystyrene is air-dried and cooled by a fluidized bed and then is conveyed to a second-generation storage bin through an air pipe. The setting time of the two-shot is generally between 100 and 120 seconds.
Step seven, curing in a secondary warehouse: naturally curing the graphite polystyrene after the second reaction in a storage bin, and forming the graphite polystyrene stably after about 5 to 6 hours to obtain the graphite modified polystyrene which can be used.
Preparation of second part graphite modified polystyrene light concrete solid wallboard
1. Foaming system
Following the procedure of example 1, a graphite-modified polystyrene was prepared, the brief procedure being: starting the combustion furnace → steam → pre-foaming (first and second foaming) of the foaming machine → entering the raw material bin → entering the metering bin.
2. Stirring system
Pumping the cement, water, light aggregate, filler and compound additive into a stirring tank through a metering bin for stirring. And after stirring, adding the graphite modified polystyrene, stirring, pouring into a mold, and vibrating to form.
3. The production process comprises the following steps:
step one, mold cleaning: and cleaning attachments on the large plate of the die by using a tool such as a shovel and keeping the large plate clean. The die comprises a large plate, a bottom plate, a cover plate and a left plug and a right plug.
Step two, oil injection: diluting and stirring the demolding oil and water according to the weight ratio of 1:5.6, standing for 15 minutes, then spraying a large plate, a bottom plate and a cover plate of the mold by using a spraying machine, and rolling and coating left and right plugs by using a brush; no significant accumulation of liquid on the surface is required.
Step three, die filling: and assembling the die according to the required length to ensure that the die is provided with screws on two sides vertically without deformation and after no gap is formed.
Step four, sticking a net and placing a card: gluing the required corresponding steel wire mesh frame by using a glue gun, and sticking glass fiber mesh cloth (without deformation and damage); 2 steel wire mesh frames are placed in each die, and one surface of the glass fiber mesh cloth faces outwards; and (3) positioning the steel wire mesh frame by using a clamp, so that a gap of 10-15mm is kept between the steel wire mesh frame and the mould.
Step five, stirring: respectively pumping cement, lightweight aggregate, filler, compound additive and water to corresponding metering bins according to the formula requirements for metering, and pumping graphite modified polystyrene to the metering bins for later use by the foam bins; opening a stirring tank (a double-shaft stirrer), firstly adding water and fillers, lightweight aggregate, cement and a compound additive (a powder metering bin) for stirring, then adding graphite modified polystyrene and stirring into paste, wherein the graphite modified polystyrene and other raw materials are stirred into slurry and have certain fluidity, and the stirring time is generally 10 minutes. When the slurry flows, the graphite modified polystyrene and the slurry have uniform flow velocity and no layering phenomenon, and the mixed slurry is obtained.
Step six, pouring: opening the secondary material distributor to the position below the stirring tank, opening a valve, and placing the mixed slurry in the tank into the secondary material distributor; and then starting a secondary distributing machine to the die to be poured, opening a valve to pour into the die (the mixed slurry slightly exceeds the height of the die) until the pouring of the die is finished.
Step seven, vibrating and strickling: after the vibrating rod is used for vibrating the plate, a scraper is used for scraping along the edge of the glass fiber gridding cloth, so that vibration leakage and scraping leakage are avoided;
step eight, collecting the noodles and the cover plate: and (3) shoveling redundant mixed slurry, grinding the slurry to the same height as that of left and right plugs by using a cover plate left and right, shoveling the excess between the cover plates by using a tool after initial setting for 40 minutes, and uniformly placing the excess in a waste area for secondary utilization after crushing. In the curing process, if the temperature is lower than 15 ℃, the mold can be covered by a heat-insulating blanket or enters a constant-temperature pre-curing room.
Step nine, removing the mold: and after the pouring is finished and the pouring is finished for 10 hours, testing that the sixth surface has no depression by using a nail cover, and then removing the mold. If the curing time is not reached, the early strengthening can be carried out by properly adjusting the additive amount. Uncovering the heat preservation blanket, detaching the cover plate, loosening the die screw, hydraulically loosening the die and loosening the left plug and the right plug for standby;
step ten, discharging the plate: starting the plate discharging machine to the side of the mold, aligning the plate discharging machine to the corresponding mold position, starting the plate discharging machine to stretch the bottom plate, uniformly pulling the plate to the plate discharging machine, checking the plate surface quality, marking the plate to the position to be forked by using chalk, bundling and turning the plate to the position to be forked, simply and conveniently reinforcing the plate by using a tool, forking the plate to a packaging position by using a forklift, and removing secondary and waste plates; and (6) packaging.
Step eleven, steam curing: and (3) placing the wrapped plates in a steam curing room, curing for 6 hours, and coating the plates the next day, and placing the plates in a shade for curing.
Step twelve, loading and delivering goods: after the plates are maintained for 21 days, the plates of the required types are subjected to spot inspection (appearance inspection and type inspection), and qualified products can be loaded and written in a qualification certificate, a delivery bill and a type inspection with an inspection report.
The following table 1 lists the products with different ratios of the components. The composite additive comprises the following components in percentage by mass: 30% of sodium sulfate, 20% of calcium formate, 10% of sugar calcium powder and 40% of mineral powder. The lightweight aggregate was not added.
TABLE 1 formulation details for multiple numbered products of different formulation amounts
The volume weight and strength of the product with the above number were measured, and the results are shown in the following table:
TABLE 2 product Performance test results
Remarking: the volume weight refers to the weight in unit volume, and the strength refers to the load bearing capacity of the wall.
In the formula, the compound additive is mainly used for rapid solidification, reinforcement, water prevention and the like of the mixture, when the environmental temperature rises, various chemical reactions in the mixture are accelerated, the dosage of the compound additive can be reduced, and the product quality can be more consistent under different environmental temperatures.
The ambient temperature and formulation of code 8 was used as example 1 and compared to other fill formulations cast under the same ambient conditions, see table 3.
TABLE 3 formulation of different fillers
TABLE 4 product performance test results (test panel 100mm thick) for different filler formulations
Figures 1-5 show the appearance of the finished wallboard of example 1 and the demonstration of tests performed on the finished wallboard for hanging force, grooving, water resistance, compression resistance, fire resistance, etc. Although the grooving can damage part of the steel wire mesh frame and the glass fiber mesh cloth, the performance of the wallboard cannot be influenced, and the wallboard has the advantages of light volume weight, high strength, convenience in construction and the like.
Preparation of third part skeleton-free graphite modified polystyrene lightweight concrete solid wallboard
The steel wire mesh frame and the glass fiber mesh fabric are beneficial to improving the compression resistance of the wall body, but the stability of other properties is mainly selected from the components and the proportion of the mixture. The raw materials used in this example were the same as in example 1 (formulation No. 8 in table 1), except that the wire mesh frame and the fiberglass mesh cloth were removed. The preparation steps are the same as those of the second part, and the frameless graphite modified polystyrene solid lightweight concrete wallboard (100mm thick) is obtained.
The surface density is 82kg/m by detection2The frost resistance test result shows that the plate surface has no crack, the compressive strength is 3.6Mpa, the bending resistance load (plate dead weight multiple) is 1.9, the water content is 8.4 percent, the drying shrinkage rate is 0.5mm/m, the hanging force (load is 1000N and stands for 24h) has no crack, the air sound insulation quantity is 48dB, the softening coefficient is 0.85, and the combustion performance grade A is obtained. The detection result shows that after the steel wire mesh frame and the glass fiber mesh cloth framework are removed, the wallboard obtained by the rest raw material formula is reduced in mechanical property, particularly in bending resistance and bearing, and can still meet the requirement of serving as an indoor non-bearing wallboard.
The inventive concept is explained in detail herein using specific examples, which are given only to aid in understanding the core concepts of the invention. It should be understood that any obvious modifications, equivalents and other improvements made by those skilled in the art without departing from the spirit of the present invention are included in the scope of the present invention.
Claims (10)
1. The graphite modified polystyrene solid lightweight concrete wallboard is characterized in that a steel wire mesh frame and glass fiber mesh cloth are used as frameworks, and the wallboard is prepared by pouring a mixture and then solidifying the mixture, wherein the mixture is prepared by mixing the following components in parts by weight:
the compound additive is a mixture of sodium sulfate, calcium formate, calcium saccharate powder and mineral powder;
the graphite modified polystyrene is prepared by the following method: carrying out first foaming on graphite polystyrene under the condition of 0.6Mpa steam pressure; and after the first foaming is finished, air-drying and cooling, curing for 2 hours, then carrying out second foaming under the condition of 0.6Mpa steam pressure, and naturally curing for 5-6 hours after the second foaming is finished to obtain a finished product.
2. The graphite modified polystyrene solid lightweight concrete wallboard according to claim 1, wherein the lightweight aggregate is one or a mixture of perlite, ceramsite, polystyrene and wood chips.
3. The graphite modified polystyrene solid lightweight concrete wallboard of claim 1, wherein the filler is one or a mixture of more of coal ash, machine-made sand, mineral powder, gypsum powder, slag and slag.
4. The graphite modified polystyrene solid lightweight concrete wallboard according to claim 1, wherein the mass percentage of each component in the compound additive is 30% of sodium sulfate, 20% of calcium formate, 10% of sugar calcium powder and 40% of mineral powder.
5. The graphite modified polystyrene solid lightweight concrete wallboard of claim 1, wherein each concrete wallboard comprises two steel wire mesh frames, the distance between each steel wire mesh frame and the surface of the wallboard is 10-15mm, and a glass fiber mesh fabric is adhered to one side of each steel wire mesh frame, which faces the surface of the wallboard.
6. The method for preparing the graphite modified polystyrene solid lightweight concrete wallboard of any one of claims 1 to 5, characterized in that, the components of the mixture are mixed, stirred and mixed uniformly, a steel wire mesh frame and a glass fiber mesh fabric are laid in a mould, and the one-step casting forming, curing and form removal are carried out.
7. The preparation method of claim 6, wherein the mixing method of the mixture comprises the steps of mixing and stirring the cement, the lightweight aggregate, the filler, the compound additive and the water, adding the graphite modified polystyrene, and stirring the mixture into paste, wherein the mixture is uniformly mixed without layering.
8. The preparation method of claim 6, wherein the method for laying the steel wire mesh frame and the glass fiber mesh cloth in the mould comprises the following steps: the demolding oil and water are mixed according to the proportion of 1:5.6 to obtain diluted demoulding oil, standing for 15 minutes, adding the diluted demoulding oil into a spraying machine, respectively spraying a large plate, a bottom plate and a cover plate of the mould, and then rolling and coating left and right plugs by using a brush; assembling the dies, gluing the steel wire net frames and sticking the grid cloth, placing two steel wire net frames in each die, enabling one side of the glass fiber net grid cloth to face outwards, and positioning the steel wire net frames by using clips to enable a gap of 10-15mm to be kept between the steel wire net frames and the dies.
9. The preparation method according to claim 6, wherein after the pouring is completed, the mould is vibrated by a vibrating rod, the edge is scraped by a scraper, and the mould is covered by a heat-insulating blanket or enters a constant-temperature pre-curing room when the temperature is lower than 15 ℃ in the solidification process.
10. The method of claim 6, further comprising the step of steam curing after curing and removing the mold.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116442354A (en) * | 2023-06-15 | 2023-07-18 | 北京惠诚基业装配式建筑科技有限公司 | Production method and device of light inorganic material composite board |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100813152B1 (en) * | 2007-01-16 | 2008-03-17 | (주)에이스 패널 | Lightweight concrete panels using expanded polystyrene beads contained graphite improving efficiency of insulation and fire-proofing and its fabrication method |
| CN109879652A (en) * | 2018-08-06 | 2019-06-14 | 上海圣奎塑业有限公司 | A kind of feedstock composition and insulation board containing polystyrene |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100813152B1 (en) * | 2007-01-16 | 2008-03-17 | (주)에이스 패널 | Lightweight concrete panels using expanded polystyrene beads contained graphite improving efficiency of insulation and fire-proofing and its fabrication method |
| CN109879652A (en) * | 2018-08-06 | 2019-06-14 | 上海圣奎塑业有限公司 | A kind of feedstock composition and insulation board containing polystyrene |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116442354A (en) * | 2023-06-15 | 2023-07-18 | 北京惠诚基业装配式建筑科技有限公司 | Production method and device of light inorganic material composite board |
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