CN114919246A - Reinforced gypsum board and preparation method thereof - Google Patents

Reinforced gypsum board and preparation method thereof Download PDF

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Publication number
CN114919246A
CN114919246A CN202210740924.XA CN202210740924A CN114919246A CN 114919246 A CN114919246 A CN 114919246A CN 202210740924 A CN202210740924 A CN 202210740924A CN 114919246 A CN114919246 A CN 114919246A
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gypsum
board
supporting plate
gypsum board
groove
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CN202210740924.XA
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CN114919246B (en
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魏彩霞
唐付华
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Pingyi Fuhua Gypsum Products Co ltd
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Pingyi Fuhua Gypsum Products Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B29/00—Layered products comprising a layer of paper or cardboard
    • B32B29/002—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
    • B32B3/085—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts spaced apart pieces on the surface of a layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/16—Drying; Softening; Cleaning
    • B32B38/164—Drying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B2038/0052—Other operations not otherwise provided for
    • B32B2038/0084—Foaming
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2266/00—Composition of foam
    • B32B2266/04—Inorganic
    • B32B2266/049—Water-setting material, e.g. concrete, plaster or asbestos cement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/558—Impact strength, toughness
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/24—Structural elements or technologies for improving thermal insulation
    • Y02A30/244—Structural elements or technologies for improving thermal insulation using natural or recycled building materials, e.g. straw, wool, clay or used tires
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

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  • Producing Shaped Articles From Materials (AREA)

Abstract

The invention discloses a reinforced gypsum board and a preparation method thereof, wherein the reinforced gypsum board comprises a gypsum core board and a protective layer, a first groove is formed in the surface of the gypsum core board, a first supporting board and a second supporting board are integrally formed on the inner wall of the first groove, the two ends of the first supporting board and the second supporting board are respectively contacted with the inner wall of the first groove, and the first supporting board and the second supporting board are obliquely arranged. Through tough paper, the shock resistance layer, the structure formation surface course of shock resistance layer and tough paper, and the second recess has been seted up on the surface of shock resistance layer, the inside of second recess is provided with third backup pad and the fourth backup pad that is used for increasing bulk strength, and be used for increasing the connecting portion of third backup pad and fourth backup pad intensity, and then make the bending strength and the shock resistance intensity of surface course improve greatly, and increased the holistic thickness of gypsum board, reduced the gypsum board and stacked, demand during the transportation, and then reduced the cost that the gypsum board was stacked and was transported.

Description

Reinforced gypsum board and preparation method thereof
Technical Field
The invention belongs to the technical field of gypsum boards, and particularly relates to a reinforced gypsum board and a preparation method thereof.
Background
The gypsum board is a material prepared by taking building gypsum as a main raw material. The building material is a building material with light weight, high strength, thin thickness, convenient processing, good performances of sound insulation, heat insulation, fire prevention and the like, is one of the currently and intensively developed novel light boards, is widely used for inner partition walls, wall body covering panels (replacing wall plastering layers), ceilings, acoustic boards, ground base boards, various decorative boards and the like of various buildings such as houses, office buildings, shops, hotels, industrial factory buildings and the like, and is not suitable for being installed in bathrooms or kitchens indoors;
the structure of gypsum board is mostly the middle base member layer that comprises gypsum cementing material to and be provided with the protective layer that tough paper constitutes in the outside of middle base member layer, the bending strength and the shock resistance of gypsum board mainly depend on the intensity of protective layer, but present gypsum board protective layer just has higher requirement when stacking, transportation gypsum board because the thickness is too thin, has increased the cost of stacking and transporting.
Disclosure of Invention
The invention aims to provide a reinforced gypsum board and a preparation method thereof, and aims to solve the problem that the stacking and transportation cost is increased due to the fact that the thickness of a gypsum board protective layer in the prior art is too thin in the background technology.
In order to realize the purpose, the invention adopts the following technical scheme: a reinforced gypsum board comprises a gypsum core board and a protective layer, wherein a first groove is formed in the surface of the gypsum core board, a first supporting plate and a second supporting plate are integrally formed on the inner wall of the first groove, the two ends of the first supporting plate and the two ends of the second supporting plate are respectively contacted with the inner wall of the first groove, and the first supporting plate and the second supporting plate are obliquely arranged;
the surface protection layer comprises tough paper and two sets of impact-resistant layers, a second groove is formed in the surfaces of the impact-resistant layers, a third supporting plate and a fourth supporting plate are bonded to the inner wall of the second groove, one end of the third supporting plate and one end of the fourth supporting plate are integrally formed and are two sets of the third supporting plate and one ends of the two sets of the fourth supporting plates are bonded to each other.
Preferably, the third supporting plate and the fourth supporting plate are arranged obliquely, connecting parts are bonded to the surfaces of the third supporting plate and the fourth supporting plate, and the two groups of corresponding connecting parts are bonded to each other.
The invention also provides a preparation method of the reinforced gypsum board, which comprises the following steps of:
and S1, preparing ingredients, pumping the slurry in the slurry storage tank into a stirrer by using a metering pump after the ingredients are prepared, foaming a foaming agent by using a dynamic foaming device and then feeding the foaming agent and the calcined gypsum powder into the stirrer, weighing and metering the coagulant and the calcined gypsum powder by using a full-automatic metering belt, and then feeding the coagulant and the calcined gypsum powder into the stirrer to mix the main materials and the auxiliary materials into qualified gypsum slurry in the stirrer.
S2, preparing the main and auxiliary materials with the same formula again, preparing the gypsum slurry with the same formula as that in the S1 through the processes, feeding the gypsum slurry into a forming machine through a vibration platform to process an anti-impact layer, wherein the anti-impact layer comprises a second groove, a third supporting plate and a fourth supporting plate, then bonding the two groups of anti-impact layers, and feeding the upper tough paper and the lower tough paper into the forming machine to be bonded on the surfaces of the two groups of anti-impact layers to form a surface protection layer;
s3, conveying the gypsum slurry in the S1 into a forming machine through a vibration platform to process a gypsum core plate, wherein the gypsum core plate comprises a first groove, a first supporting plate and a second supporting plate, then bonding two groups of protective surface layers on two surfaces of the gypsum core plate, conveying the bonded gypsum plate strip to a cutting machine through a solidification belt conveyor and a conveying roller way to cut off the gypsum plate strip according to a set length, conveying the gypsum plate strip to an I-shaped transverse conveyor through an acceleration roller way, and conveying the gypsum plate strip to a drying machine after closing the roller way;
s4, feeding the gypsum board into each layer of the drier according to the program by a bridge distributor, taking hot steam as a heat source, continuously exchanging heat with longitudinally flowing hot air while the gypsum board slowly advances in the drier, when the gypsum board is discharged from the drier, the water content of the gypsum board is less than or equal to 1%, drying the gypsum board by the drier, cooling the gypsum board by a cooling section of the drier, and orderly discharging the gypsum board from the drier by a board discharging machine.
Preferably, the step of preparing ingredients in S1 is as follows:
s11, quantitatively measuring the modified starch, the retarder, the paper pulp, the water reducing agent and the water, then putting the measured materials into a hydrapulper, stirring the materials into raw material pulp, and pumping the raw material pulp into a pulp storage tank for later use;
s12, adding the foaming agent and water into the foaming agent preparation tank in proportion, mixing and stirring uniformly, and pumping into the foaming agent preparation tank for later use;
s13, the coagulant and the calcined gypsum powder enter a storage bin for standby through a lifting conveying device.
Preferably, the stirring speed in the S11 is 260-300 rpm, the stirring time is 25-30 min, and the pH value of the raw material slurry is 7-7.5.
Preferably, the water reducing agent in the S11 is a polycarboxylic acid water reducing agent, and the addition amount of the water reducing agent is 0.2-0.6% of the addition amount of the calcined gypsum powder.
Preferably, the water reducing agent in the S11 is lignosulfonate, and the addition amount of the lignosulfonate is 0.2% -0.3% of the addition amount of the gypsum powder.
Preferably, the cooling temperature of the cooling section in S4 is room temperature, and the cooling time is 5h to 6 h.
The invention has the technical effects and advantages that: compared with the prior art, the reinforced gypsum board and the preparation method thereof provided by the invention have the following advantages:
through tough paper, the shock resistance layer, the structure formation covering of shock resistance layer and tough paper, and the second recess has been seted up on the surface of shock resistance layer, the inside of second recess is provided with third backup pad and the fourth backup pad that is used for increasing the bulk strength, and be used for increasing the connecting portion of third backup pad and fourth backup pad intensity, and then make the bending strength and the impact strength of covering improve greatly, and the holistic thickness of gypsum board has been increased, it stacks to have reduced the gypsum board, demand during the transportation, and then the cost of stacking and transporting of gypsum board has been reduced.
Drawings
FIG. 1 is a schematic structural view of a main body of a gypsum core board of the present invention;
FIG. 2 is an enlarged view of region A of FIG. 1;
FIG. 3 is a schematic cross-sectional view of an impact resistant layer of the present invention.
Reference numbers in the figures: 1. a gypsum core board; 2. a protective surface layer; 3. a first groove; 4. a first support plate; 5. a second support plate; 6. a tough paper; 7. an impact resistant layer; 8. a third support plate; 9. a second groove; 10. a fourth support plate; 11. a connecting portion.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The specific embodiments described herein are merely illustrative of the invention and do not delimit the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The invention provides a reinforced gypsum board as shown in figures 1-3, which comprises a gypsum core board 1 and a protective layer 2;
a first groove 3 is formed in the surface of the gypsum core plate 1, a first supporting plate 4 and a second supporting plate 5 are integrally formed on the inner wall of the first groove 3, the inner walls of the first groove 3 are contacted with both ends of the first supporting plate 4 and the second supporting plate 5, and the first supporting plate 4 and the second supporting plate 5 are obliquely arranged;
the veil 2 includes tough paper 6 and two sets of shock resistance layer 7, second recess 9 has been seted up on the surface of shock resistance layer 7, the inner wall of second recess 9 bonds and has third backup pad 8 and fourth backup pad 10, just the one end of third backup pad 8 and fourth backup pad 10 is integrated into one piece, and is two sets of the one end of third backup pad 8 and two sets of fourth backup pad 10 bonds each other, third backup pad 8 and fourth backup pad 10 all incline to set up, the surface of third backup pad 8 and fourth backup pad 10 all bonds and has connecting portion 11, two sets of correspondence bond each other between connecting portion 11.
A preparation method of the reinforced gypsum board comprises the following steps of:
s1, preparing ingredients, pumping the slurry in a slurry storage tank into a stirrer by using a metering pump after the ingredients are prepared, foaming a foaming agent by using a dynamic foaming device and then feeding the foaming agent and the calcined gypsum powder into the stirrer, weighing and metering the accelerating agent and the calcined gypsum powder by using a full-automatic metering belt and then feeding the accelerating agent and the calcined gypsum powder into the stirrer, and mixing the main materials and the auxiliary materials into qualified gypsum slurry in the stirrer;
the preparation method comprises the following steps:
s11, quantitatively measuring the modified starch, the retarder, the paper pulp, the water reducing agent and the water, then putting the measured materials into a hydrapulper, stirring the materials into raw material pulp, and pumping the raw material pulp into a pulp storage tank for later use;
s12, adding the foaming agent and water into the foaming agent preparation tank in proportion, mixing and stirring uniformly, and pumping into the foaming agent preparation tank for later use;
s13, the coagulant and the calcined gypsum powder enter a storage bin for standby through a lifting conveying device
The stirring speed is 260rpm, the stirring time is 25min, the pH value of the raw material slurry is 7, the water reducing agent is a polycarboxylic acid water reducing agent, the adding amount of the water reducing agent is 0.2% of the adding amount of the calcined gypsum powder, the water reducing agent is lignosulfonate, and the adding amount of the lignosulfonate is 0.2% of the adding amount of the calcined gypsum powder;
s2, preparing main and auxiliary materials with the same formula again, preparing the gypsum slurry which is the same as that in the S1 through the processes, sending the gypsum slurry into a forming machine through a vibration platform to process an impact-resistant layer, wherein the impact-resistant layer comprises a second groove, a third supporting plate and a fourth supporting plate, then bonding the two groups of impact-resistant layers, and sending the upper tough paper and the lower tough paper into the forming machine to be bonded on the surfaces of the two groups of impact-resistant layers to form a protective surface layer;
s3, conveying the gypsum slurry in the S1 into a forming machine through a vibration platform to process a gypsum core plate, wherein the gypsum core plate comprises a first groove, a first supporting plate and a second supporting plate, then bonding two groups of protective surface layers on two surfaces of the gypsum core plate, conveying the bonded gypsum plate strip to a cutting machine through a solidification belt conveyor and a conveying roller way to cut off the gypsum plate strip according to a set length, conveying the gypsum plate strip to an I-shaped transverse conveyor through an acceleration roller way, and conveying the gypsum plate strip to a drying machine after closing the roller way;
s4, feeding the gypsum board into each layer of the drier by a bridge distributor according to a program, taking hot steam as a heat source, continuously exchanging heat with longitudinally flowing hot air while the gypsum board slowly advances in the drier, when the gypsum board leaves the drier, the water content of the gypsum board is less than or equal to 1%, drying the gypsum board by the drier, cooling the gypsum board by a cooling section of the drier, and orderly taking the gypsum board out of the drier by the board-out machine, wherein the cooling temperature of the cooling section is room temperature, and the cooling time is 5 h.
Example 2
A reinforced gypsum board comprises a gypsum core board 1 and a protective layer 2;
the surface of the gypsum core board 1 is provided with a first groove 3, the inner wall of the first groove 3 is integrally formed with a first supporting board 4 and a second supporting board 5, the two ends of the first supporting board 4 and the second supporting board 5 are respectively contacted with the inner wall of the first groove 3, and the first supporting board 4 and the second supporting board 5 are obliquely arranged;
the veil 2 includes tough paper 6 and two sets of shock resistance layer 7, second recess 9 has been seted up on the surface of shock resistance layer 7, the inner wall of second recess 9 bonds and has third backup pad 8 and fourth backup pad 10, just the one end of third backup pad 8 and fourth backup pad 10 is integrated into one piece, and is two sets of the one end of third backup pad 8 and two sets of fourth backup pad 10 bonds each other, third backup pad 8 and fourth backup pad 10 all incline to set up, the surface of third backup pad 8 and fourth backup pad 10 all bonds and has connecting portion 11, two sets of correspondence bond each other between connecting portion 11.
A preparation method of the reinforced gypsum board comprises the following steps of:
s1, preparing ingredients, pumping the slurry in a slurry storage tank into a stirrer by using a metering pump after the ingredients are prepared, foaming a foaming agent by using a dynamic foaming device and then feeding the foaming agent and the calcined gypsum powder into the stirrer, weighing and metering the coagulant and the calcined gypsum powder by using a full-automatic metering belt and then feeding the coagulant and the calcined gypsum powder into the stirrer, and mixing the main materials and the auxiliary materials into qualified gypsum slurry in the stirrer;
the preparation method comprises the following steps:
s11, quantitatively measuring the modified starch, the retarder, the paper pulp, the water reducing agent and the water, then putting the measured materials into a hydrapulper, stirring the materials into raw material pulp, and pumping the raw material pulp into a pulp storage tank for later use;
s12, adding the foaming agent and water into the foaming agent preparation tank in proportion, mixing and stirring uniformly, and pumping into the foaming agent preparation tank for later use;
s13, the coagulant and the calcined gypsum powder enter a storage bin for standby through a lifting conveying device
The stirring speed is 280rpm, the stirring time is 27.5min, the pH value of the raw material slurry is 7.25, the water reducing agent is a polycarboxylic acid water reducing agent, the addition amount of the water reducing agent is 0.4% of the addition amount of the calcined gypsum powder, the water reducing agent is lignosulfonate, and the addition amount of the lignosulfonate is 0.25% of the addition amount of the calcined gypsum powder;
s2, preparing main and auxiliary materials with the same formula again, preparing the gypsum slurry which is the same as that in the S1 through the processes, sending the gypsum slurry into a forming machine through a vibration platform to process an impact-resistant layer, wherein the impact-resistant layer comprises a second groove, a third supporting plate and a fourth supporting plate, then bonding the two groups of impact-resistant layers, and sending the upper tough paper and the lower tough paper into the forming machine to be bonded on the surfaces of the two groups of impact-resistant layers to form a protective surface layer;
s3, conveying the gypsum slurry in the S1 into a forming machine through a vibration platform to process a gypsum core plate, wherein the gypsum core plate comprises a first groove, a first supporting plate and a second supporting plate, then bonding two groups of protective surface layers on two surfaces of the gypsum core plate, conveying the bonded gypsum plate strip to a cutting machine through a solidification belt conveyor and a conveying roller way to cut off the gypsum plate strip according to a set length, conveying the gypsum plate strip to an I-shaped transverse conveyor through an acceleration roller way, and conveying the gypsum plate strip to a drying machine after closing the roller way;
s4, feeding the gypsum board into each layer of the dryer by a bridge distributor according to a program, taking hot steam as a heat source, continuously carrying out heat exchange with longitudinally flowing hot air while the gypsum board slowly advances in the dryer, when the gypsum board exits from the dryer, the water content of the gypsum board is less than or equal to 1%, drying the gypsum board by the dryer, cooling the gypsum board by a cooling section of the dryer, and orderly exiting the gypsum board from the dryer by the board exit machine, wherein the cooling temperature of the cooling section is room temperature, and the cooling time is 5.5 hours.
Example 3
A reinforced gypsum board comprises a gypsum core board 1 and a protective layer 2;
the surface of the gypsum core board 1 is provided with a first groove 3, the inner wall of the first groove 3 is integrally formed with a first supporting board 4 and a second supporting board 5, the two ends of the first supporting board 4 and the second supporting board 5 are respectively contacted with the inner wall of the first groove 3, and the first supporting board 4 and the second supporting board 5 are obliquely arranged;
the veil 2 includes tough paper 6 and two sets of shock resistance layer 7, second recess 9 has been seted up on the surface of shock resistance layer 7, the inner wall of second recess 9 bonds and has third backup pad 8 and fourth backup pad 10, just the one end of third backup pad 8 and fourth backup pad 10 is integrated into one piece, and is two sets of the one end of third backup pad 8 and two sets of fourth backup pad 10 bonds each other, third backup pad 8 and fourth backup pad 10 all incline to set up, the surface of third backup pad 8 and fourth backup pad 10 all bonds and has connecting portion 11, two sets of correspondence bond each other between connecting portion 11.
A preparation method of the reinforced gypsum board comprises the following steps of:
s1, preparing ingredients, pumping the slurry in a slurry storage tank into a stirrer by using a metering pump after the ingredients are prepared, foaming a foaming agent by using a dynamic foaming device and then feeding the foaming agent and the calcined gypsum powder into the stirrer, weighing and metering the coagulant and the calcined gypsum powder by using a full-automatic metering belt and then feeding the coagulant and the calcined gypsum powder into the stirrer, and mixing the main materials and the auxiliary materials into qualified gypsum slurry in the stirrer;
the preparation method comprises the following steps:
s11, quantitatively measuring the modified starch, the retarder, the paper pulp, the water reducing agent and the water, then putting the measured materials into a hydrapulper, stirring the materials into raw material pulp, and pumping the raw material pulp into a pulp storage tank for later use;
s12, adding the foaming agent and water into the foaming agent preparation tank in proportion, mixing and stirring uniformly, and pumping into the foaming agent preparation tank for later use;
s13, the coagulant and the calcined gypsum powder enter a storage bin for standby through a lifting conveying device
The stirring speed is 300rpm, the stirring time is 30min, the pH value of the raw material slurry is 7.5, the water reducing agent is a polycarboxylic acid water reducing agent, the adding amount of the water reducing agent is 0.6% of the adding amount of the calcined gypsum powder, the water reducing agent is lignosulfonate, and the adding amount of the lignosulfonate is 0.3% of the adding amount of the calcined gypsum powder;
s2, preparing main and auxiliary materials with the same formula again, preparing the gypsum slurry which is the same as that in the S1 through the processes, sending the gypsum slurry into a forming machine through a vibration platform to process an impact-resistant layer, wherein the impact-resistant layer comprises a second groove, a third supporting plate and a fourth supporting plate, then bonding the two groups of impact-resistant layers, and sending the upper tough paper and the lower tough paper into the forming machine to be bonded on the surfaces of the two groups of impact-resistant layers to form a protective surface layer;
s3, conveying the gypsum slurry in the S1 into a forming machine through a vibration platform to process a gypsum core plate, wherein the gypsum core plate comprises a first groove, a first supporting plate and a second supporting plate, then bonding two groups of protective surface layers on two surfaces of the gypsum core plate, conveying the bonded gypsum plate strip to a cutting machine through a solidification belt conveyor and a conveying roller way to cut off the gypsum plate strip according to a set length, conveying the gypsum plate strip to an I-shaped transverse conveyor through an acceleration roller way, and conveying the gypsum plate strip to a drying machine after closing the roller way;
s4, feeding the gypsum board into each layer of the dryer by a bridge distributor according to a program, taking hot steam as a heat source, continuously performing heat exchange with longitudinally flowing hot air while the gypsum board slowly advances in the dryer, when the gypsum board exits from the dryer, the water content of the gypsum board is less than or equal to 1%, drying the gypsum board by the dryer, cooling the gypsum board by a cooling section of the dryer, and orderly exiting the gypsum board from the dryer by the board exit machine, wherein the cooling temperature of the cooling section is room temperature, and the cooling time is 6 h.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims (8)

1. The utility model provides a strenghthened type gypsum board, includes gypsum core (1) and armor layer (2), its characterized in that: the gypsum core plate is characterized in that a first groove (3) is formed in the surface of the gypsum core plate (1), a first supporting plate (4) and a second supporting plate (5) are integrally formed on the inner wall of the first groove (3), the inner walls of the first groove (3) are arranged at the two ends of the first supporting plate (4) and the second supporting plate (5) to be contacted, and the first supporting plate (4) and the second supporting plate (5) are obliquely arranged;
the protective layer (2) comprises tough paper (6) and two sets of impact resistant layers (7), a second groove (9) is formed in the surface of each impact resistant layer (7), a third supporting plate (8) and a fourth supporting plate (10) are bonded to the inner wall of the second groove (9), and one ends of the third supporting plate (8) and the fourth supporting plate (10) are integrally formed and are two sets of the ends of the third supporting plate (8) and the two sets of the fourth supporting plates (10) are bonded to each other.
2. The reinforced gypsum board of claim 1, wherein: third backup pad (8) and fourth backup pad (10) all incline to set up, the surface of third backup pad (8) and fourth backup pad (10) all bonds and has connecting portion (11), two sets of correspondences bond each other between connecting portion (11).
3. The preparation method of the reinforced gypsum board comprises the following steps, and also comprises the reinforced gypsum board, and is characterized in that:
s1, preparing ingredients, pumping the slurry in a slurry storage tank into a stirrer by using a metering pump after the ingredients are prepared, foaming a foaming agent by using a dynamic foaming device and then feeding the foaming agent and the calcined gypsum powder into the stirrer, weighing and metering the accelerating agent and the calcined gypsum powder by using a full-automatic metering belt and then feeding the accelerating agent and the calcined gypsum powder into the stirrer, and mixing the main materials and the auxiliary materials into qualified gypsum slurry in the stirrer;
s2, preparing the main and auxiliary materials with the same formula again, preparing the gypsum slurry with the same formula as that in the S1 through the processes, feeding the gypsum slurry into a forming machine through a vibration platform to process an anti-impact layer, wherein the anti-impact layer comprises a second groove, a third supporting plate and a fourth supporting plate, then bonding the two groups of anti-impact layers, and feeding the upper tough paper and the lower tough paper into the forming machine to be bonded on the surfaces of the two groups of anti-impact layers to form a surface protection layer;
s3, conveying the gypsum slurry in the S1 into a forming machine through a vibration platform to process a gypsum core plate, wherein the gypsum core plate comprises a first groove, a first supporting plate and a second supporting plate, then bonding two groups of protective surface layers on two surfaces of the gypsum core plate, conveying the bonded gypsum plate strip to a cutting machine through a solidification belt conveyor and a conveying roller way to cut off the gypsum plate strip according to a set length, conveying the gypsum plate strip to an I-shaped transverse conveyor through an acceleration roller way, and conveying the gypsum plate strip to a drying machine after closing the roller way;
s4, feeding the gypsum board into each layer of the drier according to the program by a bridge distributor, taking hot steam as a heat source, continuously exchanging heat with longitudinally flowing hot air while the gypsum board slowly advances in the drier, when the gypsum board is discharged from the drier, the water content of the gypsum board is less than or equal to 1%, drying the gypsum board by the drier, cooling the gypsum board by a cooling section of the drier, and orderly discharging the gypsum board from the drier by a board discharging machine.
4. The reinforced gypsum board preparation method of claim 3, wherein: the steps of ingredient preparation in S1 are as follows:
s11, quantitatively measuring the modified starch, the retarder, the paper pulp, the water reducing agent and the water, then putting the measured materials into a hydrapulper, stirring the materials into raw material pulp, and pumping the raw material pulp into a pulp storage tank for later use;
s12, adding the foaming agent and water into the foaming agent preparation tank in proportion, mixing and stirring uniformly, and pumping into the foaming agent preparation tank for later use;
and S13, the coagulant and the calcined gypsum powder enter a storage bin for standby through a lifting conveying device.
5. The reinforced gypsum board preparation method of claim 4, wherein: and the stirring speed in the S11 is 260-300 rpm, the stirring time is 25-30 min, and the pH value of the raw material slurry is 7-7.5.
6. The reinforced gypsum board preparation method of claim 4, wherein: the water reducing agent in the S11 is a polycarboxylic acid water reducing agent, and the addition amount of the water reducing agent is 0.2-0.6% of the addition amount of the calcined gypsum powder.
7. The reinforced gypsum board preparation method of claim 4, wherein: the water reducing agent in the S11 is lignosulfonate, and the addition amount of the lignosulfonate is 0.2% -0.3% of the addition amount of the plaster powder.
8. The reinforced gypsum board preparation method of claim 1, wherein: the cooling temperature of the cooling section in the S4 is room temperature, and the cooling time is 5-6 h.
CN202210740924.XA 2022-06-28 2022-06-28 Reinforced gypsum board and preparation method thereof Active CN114919246B (en)

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