CN114215206B - Flame-retardant heat-preservation nano plate and preparation process thereof - Google Patents
Flame-retardant heat-preservation nano plate and preparation process thereof Download PDFInfo
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
- E04B1/78—Heat insulating elements
- E04B1/80—Heat insulating elements slab-shaped
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/06—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to wood
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/56—Three layers or more
- B05D7/58—No clear coat specified
- B05D7/584—No clear coat specified at least some layers being let to dry, at least partially, before applying the next layer
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/94—Protection against other undesired influences or dangers against fire
- E04B1/941—Building elements specially adapted therefor
- E04B1/942—Building elements specially adapted therefor slab-shaped
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
- E04B9/04—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like
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- 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
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- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B80/00—Architectural or constructional elements improving the thermal performance of buildings
- Y02B80/10—Insulation, e.g. vacuum or aerogel insulation
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Abstract
The invention provides a flame-retardant heat-insulating nano plate, which comprises a substrate, wherein a flame-retardant heat-insulating nano coating and a surface coating are arranged on the surface of the substrate, and the flame-retardant heat-insulating nano coating and the surface coating are coated on the outer surface of the substrate through extrusion equipment; the coating comprises coating powder, an adhesive and seaweed powder solution, wherein the coating powder comprises hydrophilic aerogel, perlite raw mineral powder, mica powder, diatomite and ground glass fiber, the hydrophilic aerogel and the diatomite are wrapped on the outer layer of the unexpanded perlite mineral powder, the hydrophilic aerogel and the diatomite serve as heat preservation and flame retardance, in a fire environment, firstly, the large fire is flame retardant and isolated, the perlite is heated and preheated along with the temperature rise and high heat conduction until the perlite is expanded, the ground glass fiber enables the expanded coating to be kept complete, the surface of the coating plays a role in resisting high temperature and enables a base material to be flame retardant in a short time, and therefore, the flame retardant and heat preservation nano board has very good flame retardant and heat preservation performance. The preparation process is simple, has strong controllability and can be used for industrial production.
Description
Technical Field
The invention belongs to the technical field of nano plates, and particularly relates to a flame-retardant heat-preservation nano plate and a preparation process thereof.
Background
The building heat insulating material has the advantages that measures are taken on the outer protecting structure of the building, indoor heat of the building is reduced from being emitted to the outside, so that the indoor temperature of the building is kept, and the heat insulating effect is achieved. The nano board is a board in the suspended ceiling industry, and refers to the upper surface of a basic board is treated by adopting nano materials. The nano-plate material for years has very diversified functions, such as heat preservation, heat insulation, scratch resistance, corrosion resistance, flame retardance and the like; besides suspended ceilings, the suspended ceiling is widely applied to the fields of building walls, cement industry, steel industry, glass industry and the like.
The heat-insulating nano board is favored by people because of good heat-insulating performance, the existing heat-insulating nano board is prepared by adopting nano materials on the upper surface of a base board, the flame-retardant effect is not ideal, and no substantial flame-retardant effect exists.
Disclosure of Invention
The invention aims to: aiming at the technical problems in the prior art, the invention provides a flame-retardant heat-preservation nano plate.
The technical scheme adopted by the invention is as follows:
the flame-retardant heat-preservation nano plate comprises a base material, wherein a flame-retardant heat-preservation nano coating and a surface coating are sequentially arranged on the surface of the base material, and the flame-retardant heat-preservation nano coating and the surface coating are sequentially coated on the outer surface of the base material through extrusion equipment; the flame-retardant heat-preservation nano coating comprises flame-retardant heat-preservation nano coating powder, an adhesive and a seaweed powder solution, wherein the flame-retardant heat-preservation nano coating powder comprises the following raw material components: hydrophilic aerogel, perlite raw mineral powder, mica powder, diatomite and ground glass fiber; the surface coating comprises surface coating powder, an adhesive and a seaweed powder solution.
Further, the substrate can be any one of a solid wood board, a solid wood multilayer board, a density board and an aluminum board.
Further, the flame-retardant heat-preservation nano coating powder is prepared from the following components in percentage: 15-70% of hydrophilic aerogel, 10-70% of perlite raw ore powder, 6-60% of diatomite and 3-8% of ground glass fiber.
Further, the surface coating powder comprises 60-85% of calcium powder, 10-30% of diatomite and 5-15% of mica powder.
Further, the adhesive is an aqueous acrylic adhesive; the seaweed powder solution is a seaweed powder aqueous solution obtained by mixing seaweed powder and water according to a volume ratio of 1:150.
Further, the perlite raw ore powder is unexpanded perlite raw ore powder with 120 meshes; the particle size of the hydrophilic aerogel is 40-50 mm, and the pore diameter is 30-40 nm; the particle size of the mica powder is 800 meshes; the particle size of the diatomite is 400 meshes; the length of the ground glass fiber is 80-100 mu m.
A preparation process of a flame-retardant heat-preservation nano plate comprises the following steps: (a) Adding the flame-retardant heat-preservation nano coating powder and the adhesive into a stirrer according to a proportion, stirring uniformly to form a paste, and then adding the seaweed powder solution, and continuously stirring uniformly to obtain a paste coating I; (b) Putting the surface coating powder, the adhesive and the seaweed powder solution into a stirrer according to a proportion, and uniformly stirring to form a pasty coating II; (c) Pouring the pasty coating I obtained by stirring in the step a into a hopper of a spiral extrusion molding machine, starting a spiral stirring rod, and conveying the pasty coating I into a cavity of a built-in mold; (d) Setting extrusion parameters for spiral extrusion, coating the pasty coating I on a base material in a die, extruding the flame-retardant heat-preservation nano plate, and conveying the flame-retardant heat-preservation nano plate into a drying tunnel for drying; after drying, finishing the first coating of the flame-retardant heat-preservation nano plate; (e) Placing the substrate subjected to the first coating in the step d in a die, and repeating the steps c and d for the second coating; (f) Placing the substrate subjected to the second coating in the step e into a die, pouring the pasty coating II obtained in the step b into a hopper of a spiral extrusion molding machine, starting a spiral stirring rod, and conveying the pasty coating II into a cavity of a built-in die; (g) Setting extrusion parameters for spiral extrusion, coating the pasty coating II on a base material in a die, extruding the flame-retardant heat-preservation nano plate, and conveying the flame-retardant heat-preservation nano plate into a drying tunnel for drying; (h) And (5) finishing the coating of the surface coating of the flame-retardant heat-insulating nano plate after drying, thus obtaining the flame-retardant heat-insulating nano plate.
Further, the stirring time in the step (a) is 30min; the input ratio of the adhesive in the step (a) is that the volume ratio of the adhesive to the flame-retardant heat-preservation nano paint powder is 1:5.
further, the extrusion parameters are set as: the extrusion rate is 20-60 m/min; the extrusion pressure is 0.5-1 kg/cm 3 The method comprises the steps of carrying out a first treatment on the surface of the The thickness of the coating layer of the first coating and the second coating is 0.2-0.3 mm; the thickness of the coating layer for the third coating is 0.05-0.1 mm.
Further, the length of the drying tunnel is 30m, the drying temperature is 40-80 ℃, and the drying time in the drying tunnel is 8min.
The beneficial effects of the invention are as follows: according to the flame-retardant heat-insulating nano plate, the flame-retardant heat-insulating nano coating and the surface coating are sequentially arranged on the surface of the base material, and are sequentially coated on the outer surface of the base material through extrusion equipment; the flame-retardant heat-preservation nano coating comprises flame-retardant heat-preservation nano coating powder, an adhesive and seaweed powder solution, wherein the flame-retardant heat-preservation nano coating powder comprises hydrophilic aerogel, perlite raw mineral powder, mica powder, diatomite and ground glass fiber, the hydrophilic aerogel and the diatomite serve as heat-preservation flame-retardant layers in the coating extruded outside a base material, in a fire environment, the aerogel and the diatomite are wrapped on the outer layer of unexpanded perlite mineral powder, firstly, large fire is flame-retardant and isolated, along with temperature rise, heat conduction perlite is heated and preheated until the perlite is expanded, the ground glass fiber enables the expansion coating to be kept complete, the surface of the coating plays a role of high temperature resistance, and the base material is flame-retardant in a short time, so that the flame-retardant heat-preservation nano plate has very good flame-retardant heat-preservation performance. The preparation process is simple, has strong controllability and can be used for industrial production.
Drawings
FIG. 1 shows the performance test results of the flame-retardant and heat-insulating nano-sheets according to examples 1 to 4 of the present invention.
Detailed Description
The invention will now be further illustrated by means of several specific examples, which are given for illustrative purposes only and are not intended to be limiting;
example 1
A flame-retardant heat-preservation nano board comprises a base material, wherein the base material is a solid wood board of pine. The surface of the base material is sequentially provided with a flame-retardant heat-insulating nano coating and a surface coating, and the flame-retardant heat-insulating nano coating and the surface coating are sequentially coated on the outer surface of the base material through extrusion equipment; the flame-retardant heat-preservation nano coating comprises flame-retardant heat-preservation nano coating powder, an adhesive and a seaweed powder solution, wherein the flame-retardant heat-preservation nano coating powder comprises the following raw material components: hydrophilic aerogel, perlite raw mineral powder, mica powder, diatomite and ground glass fiber; the surface coating comprises surface coating powder, an adhesive and a seaweed powder solution.
Specifically, the flame-retardant heat-preservation nano coating powder is prepared from the following components in percentage by weight: 17% of hydrophilic aerogel, 60% of perlite raw ore powder, 10% of mica powder, 10% of diatomite and 3% of ground glass fiber. The surface coating powder comprises 70% of calcium powder, 20% of diatomite and 10% of mica powder.
Wherein the adhesive is an aqueous acrylic adhesive; the seaweed powder solution is a seaweed powder aqueous solution obtained by mixing seaweed powder and water according to the volume ratio of 1:150. Wherein the perlite raw ore powder is unexpanded perlite raw ore powder of 120 meshes; the particle size of the hydrophilic aerogel is 40-50 mm, and the aperture is 30-40 nm; the particle size of the mica powder is 800 meshes; the particle size of the diatomite is 400 meshes; the length of the milled glass fiber is 80-100 μm.
A preparation process of a flame-retardant heat-preservation nano plate comprises the following steps: (a) Adding the flame-retardant heat-preservation nano coating powder and the adhesive into a stirrer according to a proportion, stirring uniformly to form paste, then adding the seaweed powder solution, and continuously stirring uniformly to obtain paste coating I, wherein the stirring time is 30min; (b) Putting the surface coating powder, the adhesive and the seaweed powder solution into a stirrer according to a proportion, and stirring uniformly for 30min to form a pasty coating II; (c) Pouring the pasty coating I obtained by stirring in the step a into a hopper of a spiral extrusion molding machine, starting a spiral stirring rod, and conveying the pasty coating I into a cavity of a built-in mold; (d) Setting extrusion parameters for spiral extrusion, coating the pasty coating I on a base material in a die, extruding the flame-retardant heat-preservation nano plate, and conveying the flame-retardant heat-preservation nano plate into a drying tunnel for drying; after drying, finishing the first coating of the flame-retardant heat-preservation nano plate; (e) Placing the substrate subjected to the first coating in the step d in a die, and repeating the steps c and d for the second coating; (f) Placing the substrate subjected to the second coating in the step e into a die, pouring the pasty coating II obtained in the step b into a hopper of a spiral extrusion molding machine, starting a spiral stirring rod, and conveying the pasty coating II into a cavity of a built-in die; (g) Setting extrusion parameters for spiral extrusion, coating the pasty coating II on a base material in a die, extruding the flame-retardant heat-preservation nano plate, and conveying the flame-retardant heat-preservation nano plate into a drying tunnel for drying; (h) And (5) finishing the coating of the surface coating of the flame-retardant heat-insulating nano plate after drying, thus obtaining the flame-retardant heat-insulating nano plate.
Wherein, the input proportion of the adhesive is as follows: the volume ratio of the adhesive to the flame-retardant heat-preservation nano coating powder is 1:5, a step of; the volume ratio of the adhesive to the surface coating powder is 1:5.
wherein the extrusion parameters are set as: the extrusion rate is 30m/min; extrusion pressure of 1kg/cm 3 The method comprises the steps of carrying out a first treatment on the surface of the The thickness of the coating layer of the first coating and the second coating is 0.3mm; the thickness of the coating layer for the third coating was 0.1mm.
Wherein the length of the drying tunnel is 30m, the drying temperature is 50 ℃, and the waiting time in the drying tunnel is 8min.
Example 2
A flame-retardant heat-preservation nano board comprises a base material, wherein the base material is a solid wood multi-layer board. The surface of the base material is sequentially provided with a flame-retardant heat-insulating nano coating and a surface coating, and the flame-retardant heat-insulating nano coating and the surface coating are sequentially coated on the outer surface of the base material through extrusion equipment; the flame-retardant heat-preservation nano coating comprises flame-retardant heat-preservation nano coating powder, an adhesive and a seaweed powder solution, wherein the flame-retardant heat-preservation nano coating powder comprises the following raw material components: hydrophilic aerogel, perlite raw mineral powder, mica powder, diatomite and ground glass fiber; the surface coating comprises surface coating powder, an adhesive and a seaweed powder solution.
Specifically, the flame-retardant heat-preservation nano coating powder is prepared from the following components in percentage by weight: 20% of hydrophilic aerogel, 50% of perlite raw mineral powder, 15% of diatomite and 5% of ground glass fiber. The surface coating powder comprises 60% of calcium powder, 25% of diatomite and 15% of mica powder.
Wherein the adhesive is an aqueous acrylic adhesive; the seaweed powder solution is a seaweed powder aqueous solution obtained by mixing seaweed powder and water according to the volume ratio of 1:150. Wherein the perlite raw ore powder is unexpanded perlite raw ore powder of 120 meshes; the particle size of the hydrophilic aerogel is 40-50 mm, and the aperture is 30-40 nm; the particle size of the mica powder is 800 meshes; the particle size of the diatomite is 400 meshes; the length of the milled glass fiber is 80-100 μm.
A preparation process of a flame-retardant heat-preservation nano plate comprises the following steps: (a) Adding the flame-retardant heat-preservation nano coating powder and the adhesive into a stirrer according to a proportion, stirring uniformly to form paste, then adding the seaweed powder solution, and continuously stirring uniformly to obtain paste coating I, wherein the stirring time is 30min; (b) Putting the surface coating powder, the adhesive and the seaweed powder solution into a stirrer according to a proportion, and stirring uniformly for 30min to form a pasty coating II; (c) Pouring the pasty coating I obtained by stirring in the step a into a hopper of a spiral extrusion molding machine, starting a spiral stirring rod, and conveying the pasty coating I into a cavity of a built-in mold; (d) Setting extrusion parameters for spiral extrusion, coating the pasty coating I on a base material in a die, extruding the flame-retardant heat-preservation nano plate, and conveying the flame-retardant heat-preservation nano plate into a drying tunnel for drying; after drying, finishing the first coating of the flame-retardant heat-preservation nano plate; (e) Placing the substrate subjected to the first coating in the step d in a die, and repeating the steps c and d for the second coating; (f) Placing the substrate subjected to the second coating in the step e into a die, pouring the pasty coating II obtained in the step b into a hopper of a spiral extrusion molding machine, starting a spiral stirring rod, and conveying the pasty coating II into a cavity of a built-in die; (g) Setting extrusion parameters for spiral extrusion, coating the pasty coating II on a base material in a die, extruding the flame-retardant heat-preservation nano plate, and conveying the flame-retardant heat-preservation nano plate into a drying tunnel for drying; (h) After drying, finishing the coating of the surface coating of the flame-retardant heat-insulating nano plate, thus obtaining the flame-retardant heat-insulating nano plate
Wherein, the input proportion of the adhesive is as follows: the volume ratio of the adhesive to the flame-retardant heat-preservation nano coating powder is 1:5, a step of; the volume ratio of the adhesive to the surface coating powder is 1:5.
wherein the extrusion parameters are set as: the extrusion rate is 40m/min; extrusion pressure was 0.8kg/cm 3 The method comprises the steps of carrying out a first treatment on the surface of the The thickness of the coating layer of the first coating and the second coating is 0.3mm; the thickness of the coating layer for the third coating was 0.1mm.
Wherein the length of the drying tunnel is 30m, the drying temperature is 40 ℃, and the waiting time in the drying tunnel is 8min.
Example 3:
a flame-retardant heat-insulating nano plate comprises a base material, wherein the base material is a density plate. The surface of the base material is sequentially provided with a flame-retardant heat-insulating nano coating and a surface coating, and the flame-retardant heat-insulating nano coating and the surface coating are sequentially coated on the outer surface of the base material through extrusion equipment; the flame-retardant heat-preservation nano coating comprises flame-retardant heat-preservation nano coating powder, an adhesive and a seaweed powder solution, wherein the flame-retardant heat-preservation nano coating powder is prepared from the following components in percentage by weight: 15% of hydrophilic aerogel, 70% of perlite raw mineral powder, 10% of diatomite and 5% of ground glass fiber; the surface coating comprises surface coating powder, an adhesive and a seaweed powder solution; the surface coating powder comprises 85% of calcium powder, 10% of diatomite and 5% of mica powder. The adhesive is an aqueous acrylic adhesive; the seaweed powder solution is a seaweed powder aqueous solution obtained by mixing seaweed powder and water according to the volume ratio of 1:150.
Wherein the perlite raw ore powder is unexpanded perlite raw ore powder of 120 meshes; the particle size of the hydrophilic aerogel is 40-50 mm, and the aperture is 30-40 nm; the particle size of the mica powder is 800 meshes; the particle size of the diatomite is 400 meshes; the length of the milled glass fiber is 80-100 μm.
A preparation process of a flame-retardant heat-preservation nano plate comprises the following steps: (a) Adding the flame-retardant heat-preservation nano coating powder and the adhesive into a stirrer according to a proportion, stirring uniformly to form paste, then adding the seaweed powder solution, and continuously stirring uniformly to obtain paste coating I, wherein the stirring time is 30min; (b) Putting the surface coating powder, the adhesive and the seaweed powder solution into a stirrer according to a proportion, and stirring uniformly for 30min to form a pasty coating II; (c) Pouring the pasty coating I obtained by stirring in the step a into a hopper of a spiral extrusion molding machine, starting a spiral stirring rod, and conveying the pasty coating I into a cavity of a built-in mold; (d) Setting extrusion parameters for spiral extrusion, coating the pasty coating I on a base material in a die, extruding the flame-retardant heat-preservation nano plate, and conveying the flame-retardant heat-preservation nano plate into a drying tunnel for drying; after drying, finishing the first coating of the flame-retardant heat-preservation nano plate; (e) Placing the substrate subjected to the first coating in the step d in a die, and repeating the steps c and d for the second coating; (f) Placing the substrate subjected to the second coating in the step e into a die, pouring the pasty coating II obtained in the step b into a hopper of a spiral extrusion molding machine, starting a spiral stirring rod, and conveying the pasty coating II into a cavity of a built-in die; (g) Setting extrusion parameters for spiral extrusion, coating the pasty coating II on a base material in a die, extruding the flame-retardant heat-preservation nano plate, and conveying the flame-retardant heat-preservation nano plate into a drying tunnel for drying; (h) And (5) finishing the coating of the surface coating of the flame-retardant heat-insulating nano plate after drying, thus obtaining the flame-retardant heat-insulating nano plate.
Wherein, the input proportion of the adhesive is as follows: the volume ratio of the adhesive to the flame-retardant heat-preservation nano coating powder is 1:5, a step of; the volume ratio of the adhesive to the surface coating powder is 1:5.
wherein the extrusion parameters are set as: the extrusion rate was 50m/min; extrusion pressure was 0.5kg/cm 3 The method comprises the steps of carrying out a first treatment on the surface of the The thickness of the coating layer of the first coating and the second coating is 0.2mm; the thickness of the coating layer for the third coating was 0.08mm.
Wherein the length of the drying tunnel is 30m, the drying temperature is 80 ℃, and the waiting time in the drying tunnel is 8min.
Example 4:
a flame-retardant heat-insulating nano-board comprises a base material, wherein the base material is a solid wood board of pine. The surface of the base material is sequentially provided with a flame-retardant heat-insulating nano coating and a surface coating, and the flame-retardant heat-insulating nano coating and the surface coating are sequentially coated on the outer surface of the base material through extrusion equipment; the flame-retardant heat-preservation nano coating comprises flame-retardant heat-preservation nano coating powder, an adhesive and a seaweed powder solution, wherein the flame-retardant heat-preservation nano coating powder is prepared from the following components in percentage by weight: 25% of hydrophilic aerogel, 55% of perlite raw ore powder, 12% of diatomite and 8% of ground glass fiber; the surface coating comprises surface coating powder, an adhesive and a seaweed powder solution, wherein the surface coating powder comprises 80% of calcium powder, 15% of diatomite and 5% of mica powder.
Wherein the adhesive is an aqueous acrylic adhesive; the seaweed powder solution is a seaweed powder aqueous solution obtained by mixing seaweed powder and water according to the volume ratio of 1:150.
Wherein the perlite raw ore powder is unexpanded perlite raw ore powder of 120 meshes; the particle size of the hydrophilic aerogel is 40-50 mm, and the aperture is 30-40 nm; the particle size of the mica powder is 800 meshes; the particle size of the diatomite is 400 meshes; the length of the milled glass fiber is 80-100 μm.
The preparation process of the flame-retardant heat-preservation nano plate comprises the following steps: (a) Adding the flame-retardant heat-preservation nano coating powder and the adhesive into a stirrer according to a proportion, stirring uniformly to form paste, then adding the seaweed powder solution, and continuously stirring uniformly to obtain paste coating I, wherein the stirring time is 30min; (b) Putting the surface coating powder, the adhesive and the seaweed powder solution into a stirrer according to a proportion, and stirring uniformly for 30min to form a pasty coating II; (c) Pouring the pasty coating I obtained by stirring in the step a into a hopper of a spiral extrusion molding machine, starting a spiral stirring rod, and conveying the pasty coating I into a cavity of a built-in mold; (d) Setting extrusion parameters for spiral extrusion, coating the pasty coating I on a base material in a die, extruding the flame-retardant heat-preservation nano plate, and conveying the flame-retardant heat-preservation nano plate into a drying tunnel for drying; after drying, finishing the first coating of the flame-retardant heat-preservation nano plate; (e) Placing the substrate subjected to the first coating in the step d in a die, and repeating the steps c and d for the second coating; (f) Placing the substrate subjected to the second coating in the step e into a die, pouring the pasty coating II obtained in the step b into a hopper of a spiral extrusion molding machine, starting a spiral stirring rod, and conveying the pasty coating II into a cavity of a built-in die; (g) Setting extrusion parameters for spiral extrusion, coating the pasty coating II on a base material in a die, extruding the flame-retardant heat-preservation nano plate, and conveying the flame-retardant heat-preservation nano plate into a drying tunnel for drying; (h) And (5) finishing the coating of the surface coating of the flame-retardant heat-insulating nano plate after drying, thus obtaining the flame-retardant heat-insulating nano plate.
Wherein, the input proportion of the adhesive is as follows: the volume ratio of the adhesive to the flame-retardant heat-preservation nano coating powder is 1:5, a step of; the volume ratio of the adhesive to the surface coating powder is 1:5.
wherein the extrusion parameters are set as: the extrusion rate was 20m/min; extrusion pressure was 0.6kg/cm 3 The method comprises the steps of carrying out a first treatment on the surface of the The thickness of the coating layer of the first coating and the second coating is 0.25mm; the thickness of the coating layer for the third coating is 0.05mm.
Wherein the length of the drying tunnel is 30m, the drying temperature is 60 ℃, and the waiting time in the drying tunnel is 8min.
The method for testing the flame retardant property of the flame retardant heat preservation nano board of the embodiments 1-4 and the comparative embodiment 1 comprises the following steps: (1) sample preparation: cutting a flame-retardant heat-preservation nano plate into a combustion sample sheet with the diameter of 125 x 13 x 50 mm; (2) sample measurement: the test piece is placed vertically, the flame height is adjusted to be 2cm, the first burning is carried out for 10min and is kept off, the required time and other phenomena are recorded, the second burning is carried out for 10min and is kept off, the required time and other phenomena are recorded, and meanwhile whether dripping and plate burning phenomena occur or not is observed.
Test results: the performance test results of the flame-retardant heat-insulating nano board in the embodiments 1-4 are shown in figure 1. The heat conductivity of the coating of the flame-retardant heat-preserving nano plate is about 0.1W/(m.K); the porosity of the coating of the flame-retardant heat-insulating nano plate is about 60 percent. Excellent flame retardant properties, and does not burn completely in a flame of 20 minutes.
The foregoing is merely a preferred embodiment of the invention, and it should be noted that modifications could be made by those skilled in the art without departing from the principles of the invention, which modifications would also be considered to be within the scope of the invention.
Claims (9)
1. The utility model provides a fire-retardant heat preservation nano-sheet material which characterized in that: the flame-retardant heat-insulating nano coating comprises a substrate, wherein a flame-retardant heat-insulating nano coating and a surface coating are sequentially arranged on the outer surface of the substrate, and the flame-retardant heat-insulating nano coating and the surface coating are sequentially coated on the outer surface of the substrate through extrusion equipment; the flame-retardant heat-preservation nano coating comprises flame-retardant heat-preservation nano coating powder, an adhesive and a seaweed powder solution, wherein the flame-retardant heat-preservation nano coating powder comprises the following raw material components: hydrophilic aerogel, perlite raw mineral powder, mica powder, diatomite and ground glass fiber; the surface coating comprises surface coating powder, an adhesive and a seaweed powder solution;
the preparation process of the flame-retardant heat-preservation nano plate comprises the following steps:
(a) Adding the flame-retardant heat-preservation nano coating powder and the adhesive into a stirrer according to a proportion, stirring uniformly to form a paste, and then adding the seaweed powder solution, and continuously stirring uniformly to obtain a paste coating I;
(b) Putting the surface coating powder, the adhesive and the seaweed powder solution into a stirrer according to a proportion, and uniformly stirring to form a pasty coating II;
(c) Pouring the pasty coating I obtained by stirring in the step a into a hopper of a spiral extrusion molding machine, starting a spiral stirring rod, and conveying the pasty coating I into a cavity of a built-in mold;
(d) Setting extrusion parameters for spiral extrusion, coating the pasty coating I on a base material in a die, extruding the flame-retardant heat-preservation nano plate, and conveying the flame-retardant heat-preservation nano plate into a drying tunnel for drying; after drying, finishing the first coating of the flame-retardant heat-preservation nano plate;
(e) Placing the substrate subjected to the first coating in the step d in a die, and repeating the steps c and d for the second coating; (f) Placing the substrate subjected to the second coating in the step e into a die, pouring the pasty coating II obtained in the step b into a hopper of a spiral extrusion molding machine, starting a spiral stirring rod, and conveying the pasty coating II into a cavity of a built-in die;
(g) Setting extrusion parameters for spiral extrusion, coating the pasty coating II on a base material in a die, extruding the flame-retardant heat-preservation nano plate, and conveying the flame-retardant heat-preservation nano plate into a drying tunnel for drying;
(h) And (5) finishing the coating of the surface coating of the flame-retardant heat-insulating nano plate after drying, thus obtaining the flame-retardant heat-insulating nano plate.
2. The flame retardant and thermal insulating nano-sheet material according to claim 1, wherein: the base material is any one of a solid wood board, a solid wood multi-layer board, a density board and an aluminum board.
3. The flame retardant and thermal insulating nano-sheet material according to claim 1, wherein: the flame-retardant heat-preservation nano coating powder is prepared from the following components in percentage by weight: 15-70% of hydrophilic aerogel, 10-70% of perlite raw ore powder, 6-60% of diatomite and 3-8% of ground glass fiber.
4. The process for preparing the flame-retardant and heat-insulating nano-board according to claim 1, which is characterized in that: the surface coating powder comprises 60-85% of calcium powder, 10-30% of diatomite and 5-15% of mica powder.
5. The flame-retardant and heat-insulating nano-sheet material according to claim 1, 3 or 4, wherein: the adhesive is an aqueous acrylic adhesive; the seaweed powder solution is a seaweed powder aqueous solution obtained by mixing seaweed powder and water according to a volume ratio of 1:150.
6. The flame-retardant and heat-insulating nano-sheet material according to claim 1, 3 or 4, wherein: the perlite raw ore powder is unexpanded perlite raw ore powder with 120 meshes; the particle size of the hydrophilic aerogel is 40-50 mm, and the pore diameter is 30-40 nm; the particle size of the mica powder is 800 meshes; the particle size of the diatomite is 400 meshes; the length of the ground glass fiber is 80-100 mu m.
7. The flame retardant and thermal insulation nano-board as defined in claim 1, wherein: the input ratio of the adhesive is that the volume ratio of the adhesive to the flame-retardant heat-preservation nano coating powder or the surface coating powder is 1:5.
8. the flame retardant and thermal insulation nano-sheet material according to claim 1, wherein: the extrusion parameters were set as: the extrusion rate is 20-60 m/min; the extrusion pressure is 0.5-1 kg/cm 3 The method comprises the steps of carrying out a first treatment on the surface of the The thickness of the coating layer of the first coating and the second coating is 0.2-0.3 mm; the thickness of the coating layer for the third coating is 0.05-0.1 mm.
9. The flame retardant and thermal insulation nano-sheet material according to claim 1, wherein: the length of the drying tunnel is 30m, the temperature of drying is 40-80 ℃, and the waiting time in the drying tunnel is 8min.
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