CN113276528A - Cold-storage heat-insulation composite board and processing technology thereof - Google Patents

Cold-storage heat-insulation composite board and processing technology thereof Download PDF

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Publication number
CN113276528A
CN113276528A CN202110152417.XA CN202110152417A CN113276528A CN 113276528 A CN113276528 A CN 113276528A CN 202110152417 A CN202110152417 A CN 202110152417A CN 113276528 A CN113276528 A CN 113276528A
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parts
heat
weight
agent
polyurethane
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马骏
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Yangzhou Diest Materials Co ltd
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Yangzhou Diest Materials 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
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/065—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
    • 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
    • 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
    • B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • 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
    • B32B37/1284—Application of adhesive
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
    • B60P3/00—Vehicles adapted to transport, to carry or to comprise special loads or objects
    • B60P3/20—Refrigerated goods vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D33/00—Superstructures for load-carrying vehicles
    • B62D33/04—Enclosed load compartments ; Frameworks for movable panels, tarpaulins or side curtains
    • B62D33/048—Enclosed load compartments ; Frameworks for movable panels, tarpaulins or side curtains for refrigerated goods vehicles
    • 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
    • C09D131/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an acyloxy radical of a saturated carboxylic acid, of carbonic acid, or of a haloformic acid; Coating compositions based on derivatives of such polymers
    • C09D131/02—Homopolymers or copolymers of esters of monocarboxylic acids
    • C09D131/04—Homopolymers or copolymers of vinyl acetate
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J131/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an acyloxy radical of a saturated carboxylic acid, of carbonic acid, or of a haloformic acid; Adhesives based on derivatives of such polymers
    • C09J131/02—Homopolymers or copolymers of esters of monocarboxylic acids
    • C09J131/04—Homopolymers or copolymers of vinyl acetate
    • 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
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/24—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate
    • B32B2037/243—Coating
    • 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/26—Polymeric coating
    • 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
    • B32B2307/10—Properties of the layers or laminate having particular acoustical properties
    • B32B2307/102—Insulating
    • 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
    • B32B2307/552—Fatigue strength
    • 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
    • B32B2307/70—Other properties
    • B32B2307/71—Resistive to light or to UV
    • 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
    • B32B2307/70—Other properties
    • B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
    • 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
    • B32B2307/70—Other properties
    • B32B2307/718—Weight, e.g. weight per square meter
    • 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
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • B32B2307/7265—Non-permeable
    • 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
    • B32B2605/00—Vehicles
    • B32B2605/08—Cars

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  • Engineering & Computer Science (AREA)
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  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Public Health (AREA)
  • Health & Medical Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention relates to a refrigerated heat-insulation composite board which comprises a heat-insulation layer, wherein the top and the bottom of the heat-insulation layer are connected with panel layers through adhesive layers, the surfaces of the two panel layers are coated with gel coat layers, and the gel coat layers comprise 15-20 parts by weight of vinyl acetate emulsion, 10-15 parts by weight of epoxy resin, 12-16 parts by weight of glycerol, 2-8 parts by weight of anti-aging agent, 1-3 parts by weight of leveling agent, 5-6 parts by weight of film-forming assistant, 0.5-0.8 part by weight of dispersing agent, 0.1-0.2 part by weight of defoaming agent, 0.8-1.2 parts by weight of preservative and 0.1-0.3 part by weight of stabilizer; the invention adopts the glass fiber reinforced plastic plate as the panel, uses polyurethane to directly foam and fill to form the heat insulation layer, has light weight, high strength, good rigidity, good sound insulation and heat insulation performance, solves the problems of difficult cleaning, easy sinking and deformation, poor durability, easy abrasion and poor anti-collision performance of the traditional plate material, has water impermeability, has the closed pore rate of the hard polyurethane foam of more than 90 percent, and has good chemical stability to the atmosphere, water, acid, alkali, salt and other media with common concentration due to the gel coat layer.

Description

Cold-storage heat-insulation composite board and processing technology thereof
Technical Field
The invention relates to the technical field of composite board processing technologies, in particular to a refrigerated heat-insulation composite board and a processing technology thereof.
Background
The refrigerator car is a closed type van transport vehicle for maintaining the temperature of frozen or fresh-keeping goods, the refrigerator car is a special refrigerator transport vehicle provided with a refrigerating device of a refrigerating unit and a polyurethane heat insulation compartment, the refrigerator car can be classified according to manufacturers, chassis bearing capacity and compartment types, a box body of the refrigerator car is generally provided with a composite plate to improve the heat insulation effect on the goods, but the surface of the existing refrigerator heat insulation composite plate is not easy to clean, is easy to dent and deform, and has poor durability, easy abrasion and poor anti-collision performance. Therefore, the refrigerated heat-insulation composite board and the processing technology thereof are provided.
Disclosure of Invention
The invention aims to overcome the problems in the prior art and provides a refrigerated heat-insulation composite board and a processing technology thereof.
In order to achieve the technical purpose and achieve the technical effect, the invention is realized by the following technical scheme:
the refrigerated heat-insulation composite board comprises a heat-insulation layer, wherein the top and the bottom of the heat-insulation layer are connected with panel layers through adhesive layers, the surfaces of the two panel layers are coated with gel coat layers, and the gel coat layers comprise 15-20 parts by weight of vinyl acetate emulsion, 10-15 parts by weight of epoxy resin, 12-16 parts by weight of glycerol, 2-8 parts by weight of anti-aging agent, 1-3 parts by weight of leveling agent, 5-6 parts by weight of film-forming assistant, 0.5-0.8 part by weight of dispersing agent, 0.1-0.2 part by weight of defoaming agent, 0.8-1.2 parts by weight of preservative and 0.1-0.3 part by weight of stabilizer.
Further, the heat-insulating layer is a polyurethane layer.
Further, the panel layer is a glass fiber reinforced plastic plate.
Furthermore, the adhesive layer comprises, by weight, 20-25 parts of polyvinyl acetate, 2-4 parts of a flame retardant, 15-18 parts of epoxy resin, 1-2 parts of a heat stabilizer, 0.2-0.3 part of a curing agent, 0.1-0.3 part of a leveling agent, 0.5-0.6 part of a defoaming agent, and 0.4-0.7 part of an antioxidant.
The invention also provides a processing technology of the refrigerated heat-insulation composite board, which comprises the following steps:
1) mixing polyisocyanate and polyol according to the volume ratio of 3:1, adding the mixture into a spray gun, and adding a catalyst and an activator according to the volume ratio of 1:1 to catalyze the polyisocyanate and the polyol to generate esterification so as to generate polyurethane foam;
2) spraying polyurethane foam into the mold by a spray gun to prepare a polyurethane heat-preservation laminate;
3) after an adhesive layer is uniformly coated on the upper surface of the polyurethane heat-insulation layer plate, a glass steel plate is covered on the polyurethane heat-insulation layer plate and is glued and shaped by a gluing machine;
4) turning the polyurethane insulation laminate treated in the step 3) for 180 degrees, uniformly coating an adhesive layer on the surface of the polyurethane insulation laminate, covering a glass steel plate on the polyurethane insulation laminate, and gluing and shaping by a gluing machine;
5) mixing and stirring the vinyl acetate emulsion, the epoxy resin, the glycerol, the anti-aging agent, the flatting agent, the film forming auxiliary agent, the dispersing agent, the defoaming agent, the preservative and the stabilizer according to the proportion to obtain a gel coat solution;
6) and uniformly coating the gel coat solution on the surfaces of the two glass steel plates by using a spraying mechanism, and quickly drying by using a drying mechanism to obtain the refrigerated heat-insulation composite plate.
Further, the gluing temperature of the gluing machine is 60-80 ℃.
Further, the spraying pressure of the spray gun is 0.2-0.3 MPa.
Further, the drying mechanism dries through warm air, the drying temperature is 55-60 ℃, and the drying pressure is 0.04 MPa.
The invention adopts the glass fiber reinforced plastic plate as the panel, uses polyurethane to directly foam and fill to form the heat insulation layer, has light weight, high strength, good rigidity, good sound insulation and heat insulation performance, solves the problems that the traditional plate material is not easy to clean, easy to dent and deform, poor in durability, easy to wear and poor in anti-collision performance, has water impermeability, has the closed cell rate of rigid polyurethane foam more than 90 percent, has good water resistance of the composite plate, and has good chemical stability to the atmosphere, water, acid, alkali, salt and other media with common concentration, so that the composite plate has high surface finish, good light insulation performance, no color change, corrosion resistance, light resistance, ageing resistance and convenient repair.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
fig. 1 is a schematic view of the overall structure of the present invention.
The reference numbers in the figures illustrate: 1-gel coat layer, 2-panel layer, 3-adhesive layer and 4-heat preservation layer.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Example 1
As shown in fig. 1, the refrigerated and heat-insulating composite board of the embodiment comprises a heat-insulating layer 4, wherein the top and the bottom of the heat-insulating layer 4 are both connected with panel layers 2 through adhesive layers 3, the surfaces of the two panel layers 2 are coated with gel coat layers 1, and the gel coat layers 1 comprise, by weight, 15 parts of vinyl acetate emulsion, 10 parts of epoxy resin, 12 parts of glycerol, 2 parts of anti-aging agent, 1 part of leveling agent, 5 parts of film-forming assistant, 0.5 part of dispersing agent, 0.1 part of defoaming agent, 0.8 part of preservative and 0.1 part of stabilizer.
The glass fiber reinforced plastic plate is used as a panel, the polyurethane is directly foamed and filled to form the heat insulation layer 4, the glass fiber reinforced plastic plate is light in weight, high in strength, good in rigidity, good in sound insulation and heat insulation performance, the problems that a traditional plate material is not easy to clean, easy to recess and deform, poor in durability, easy to wear and poor in anti-collision performance are solved, the glass fiber reinforced plastic plate has water impermeability, the closed cell rate of rigid polyurethane foam is larger than 90%, the water resistance of the composite plate is good, and the gel coat layer has good chemical stability on media such as atmosphere, water, acid, alkali, salt and the like with common concentrations, so that the composite plate is high in surface smoothness, good in light insulation performance, free of color change, corrosion-resistant, light-proof, anti-aging and convenient to repair.
Preferably, the heat-insulating layer 4 is a polyurethane layer.
Preferably, the panel layer 2 is a glass fiber reinforced plastic plate.
Preferably, the adhesive layer 3 comprises, by weight, 20 parts of polyvinyl acetate, 2 parts of a flame retardant, 15 parts of epoxy resin, 1 part of a heat stabilizer, 0.2 part of a curing agent, 0.1 part of a leveling agent, 0.5 part of a defoaming agent, and 0.4 part of an antioxidant.
The invention also provides a processing technology of the refrigerated heat-insulation composite board, which comprises the following steps:
1) mixing polyisocyanate and polyol according to the volume ratio of 3:1, adding the mixture into a spray gun, and adding a catalyst and an activator according to the volume ratio of 1:1 to catalyze the polyisocyanate and the polyol to generate esterification so as to generate polyurethane foam;
2) spraying polyurethane foam into the mold by a spray gun to prepare a polyurethane heat-preservation laminate;
3) after an adhesive layer is uniformly coated on the upper surface of the polyurethane heat-insulation layer plate, a glass steel plate is covered on the polyurethane heat-insulation layer plate and is glued and shaped by a gluing machine;
4) turning the polyurethane insulation laminate treated in the step 3) for 180 degrees, uniformly coating an adhesive layer on the surface of the polyurethane insulation laminate, covering a glass steel plate on the polyurethane insulation laminate, and gluing and shaping by a gluing machine;
5) mixing and stirring the vinyl acetate emulsion, the epoxy resin, the glycerol, the anti-aging agent, the flatting agent, the film forming auxiliary agent, the dispersing agent, the defoaming agent, the preservative and the stabilizer according to the proportion to obtain a gel coat solution;
6) and uniformly coating the gel coat solution on the surfaces of the two glass steel plates by using a spraying mechanism, and quickly drying by using a drying mechanism to obtain the refrigerated heat-insulation composite plate.
Preferably, the gluing temperature of the gluing machine is 60 ℃.
Preferably, the ejection pressure of the spray gun is 0.2 MPa.
Preferably, the drying mechanism dries through warm air, the drying temperature is 55 ℃, and the drying pressure is 0.04 MPa.
Example 2
The embodiment provides a cold-stored heat preservation composite sheet, including heat preservation 4, the top and the bottom of heat preservation 4 are all connected with panel layer 2 through viscose layer 3, two panel layer 2's surface coating has gel coat layer 1, gel coat layer 1 includes, by weight component, vinyl acetate emulsion 20 parts, epoxy 15 parts, glycerine 16 parts, anti-aging agent 8 parts, flatting agent 3 parts, film-forming auxiliary agent 6 parts, dispersant 0.8 part, defoaming agent 0.2 part, antiseptic 1.2 parts, stabilizer 0.3 part.
Preferably, the heat-insulating layer 4 is a polyurethane layer.
Preferably, the panel layer 2 is a glass fiber reinforced plastic plate.
Preferably, the adhesive layer 3 comprises 25 parts of polyvinyl acetate, 4 parts of flame retardant, 18 parts of epoxy resin, 2 parts of heat stabilizer, 0.3 part of curing agent, 0.3 part of flatting agent, 0.6 part of defoaming agent and 0.7 part of antioxidant by weight.
The invention also provides a processing technology of the refrigerated heat-insulation composite board, which comprises the following steps:
1) mixing polyisocyanate and polyol according to the volume ratio of 3:1, adding the mixture into a spray gun, and adding a catalyst and an activator according to the volume ratio of 1:1 to catalyze the polyisocyanate and the polyol to generate esterification so as to generate polyurethane foam;
2) spraying polyurethane foam into the mold by a spray gun to prepare a polyurethane heat-preservation laminate;
3) after an adhesive layer is uniformly coated on the upper surface of the polyurethane heat-insulation layer plate, a glass steel plate is covered on the polyurethane heat-insulation layer plate and is glued and shaped by a gluing machine;
4) turning the polyurethane insulation laminate treated in the step 3) for 180 degrees, uniformly coating an adhesive layer on the surface of the polyurethane insulation laminate, covering a glass steel plate on the polyurethane insulation laminate, and gluing and shaping by a gluing machine;
5) mixing and stirring the vinyl acetate emulsion, the epoxy resin, the glycerol, the anti-aging agent, the flatting agent, the film forming auxiliary agent, the dispersing agent, the defoaming agent, the preservative and the stabilizer according to the proportion to obtain a gel coat solution;
6) and uniformly coating the gel coat solution on the surfaces of the two glass steel plates by using a spraying mechanism, and quickly drying by using a drying mechanism to obtain the refrigerated heat-insulation composite plate.
Preferably, the gluing temperature of the gluing machine is 80 ℃.
Preferably, the ejection pressure of the spray gun is 0.3 MPa.
Preferably, the drying mechanism dries through warm air, the drying temperature is 60 ℃, and the drying pressure is 0.04 MPa.
Example 3
The embodiment provides a cold-stored heat preservation composite sheet, including heat preservation 4, the top and the bottom of heat preservation 4 are all connected with panel layer 2 through viscose layer 3, two panel layer 2's surface coating has gel coat layer 1, gel coat layer 1 includes, by weight component, 18 parts of vinyl acetate emulsion, 11 parts of epoxy resin, 13 parts of glycerine, 6 parts of anti-aging agent, 2 parts of flatting agent, 5.7 parts of film-forming auxiliary agent, 0.7 part of dispersant, 0.18 part of defoaming agent, 0.95 part of preservative, 0.18 part of stabilizer.
Preferably, the heat-insulating layer 4 is a polyurethane layer.
Preferably, the panel layer 2 is a glass fiber reinforced plastic plate.
Preferably, the adhesive layer 3 comprises, by weight, 22 parts of polyvinyl acetate, 3 parts of a flame retardant, 16 parts of epoxy resin, 1.4 parts of a heat stabilizer, 0.24 part of a curing agent, 0.2 part of a leveling agent, 0.54 part of a defoaming agent, and 0.5 part of an antioxidant.
The invention also provides a processing technology of the refrigerated heat-insulation composite board, which comprises the following steps:
1) mixing polyisocyanate and polyol according to the volume ratio of 3:1, adding the mixture into a spray gun, and adding a catalyst and an activator according to the volume ratio of 1:1 to catalyze the polyisocyanate and the polyol to generate esterification so as to generate polyurethane foam;
2) spraying polyurethane foam into the mold by a spray gun to prepare a polyurethane heat-preservation laminate;
3) after an adhesive layer is uniformly coated on the upper surface of the polyurethane heat-insulation layer plate, a glass steel plate is covered on the polyurethane heat-insulation layer plate and is glued and shaped by a gluing machine;
4) turning the polyurethane insulation laminate treated in the step 3) for 180 degrees, uniformly coating an adhesive layer on the surface of the polyurethane insulation laminate, covering a glass steel plate on the polyurethane insulation laminate, and gluing and shaping by a gluing machine;
5) mixing and stirring the vinyl acetate emulsion, the epoxy resin, the glycerol, the anti-aging agent, the flatting agent, the film forming auxiliary agent, the dispersing agent, the defoaming agent, the preservative and the stabilizer according to the proportion to obtain a gel coat solution;
6) and uniformly coating the gel coat solution on the surfaces of the two glass steel plates by using a spraying mechanism, and quickly drying by using a drying mechanism to obtain the refrigerated heat-insulation composite plate.
Preferably, the gluing temperature of the gluing machine is 76 ℃.
Preferably, the ejection pressure of the spray gun is 0.27 MPa.
Preferably, the drying mechanism dries through warm air, the drying temperature is 58 ℃, and the drying pressure is 0.04 MPa.
The composite board has the board thickness of 30-150 mm, the weight of 9.97kg/m2-13.23kg/m2, the use temperature of-70-80 ℃, the heat conductivity coefficient of 0.063 lambda-0.019 lambda, the bonding strength of the heat-insulating layer of not less than 0.09MPa, the combustion performance of B1 grade, and the bending resistance bearing capacity of the sandwich board of not less than 0.5Kn/m2 when the deflection is Lo/200(Lo is the distance between supports).
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.

Claims (8)

1. The utility model provides a cold-stored heat preservation composite sheet which characterized in that: the heat-insulating board comprises a heat-insulating layer, wherein the top and the bottom of the heat-insulating layer are connected with panel layers through adhesive layers, the surfaces of the two panel layers are coated with gel coat layers, and the gel coat layers comprise 15-20 parts of vinyl acetate emulsion, 10-15 parts of epoxy resin, 12-16 parts of glycerol, 2-8 parts of anti-aging agent, 1-3 parts of flatting agent, 5-6 parts of film-forming additive, 0.5-0.8 part of dispersing agent, 0.1-0.2 part of defoaming agent, 0.8-1.2 parts of preservative and 0.1-0.3 part of stabilizing agent by weight.
2. A cold storage thermal composite panel according to claim 1, wherein: the heat-insulating layer is a polyurethane layer.
3. A cold storage thermal composite panel according to claim 1, wherein: the panel layer is a glass fiber reinforced plastic plate.
4. A cold storage thermal composite panel according to claim 1, wherein: the adhesive layer comprises, by weight, 20-25 parts of polyvinyl acetate, 2-4 parts of a flame retardant, 15-18 parts of epoxy resin, 1-2 parts of a heat stabilizer, 0.2-0.3 part of a curing agent, 0.1-0.3 part of a leveling agent, 0.5-0.6 part of an antifoaming agent and 0.4-0.7 part of an antioxidant.
5. The processing technology of the refrigeration heat-preservation composite board disclosed in the claims 1-4 is characterized by comprising the following steps:
1) mixing polyisocyanate and polyol according to the volume ratio of 3:1, adding the mixture into a spray gun, and adding a catalyst and an activator according to the volume ratio of 1:1 to catalyze the polyisocyanate and the polyol to generate esterification so as to generate polyurethane foam;
2) spraying polyurethane foam into the mold by a spray gun to prepare a polyurethane heat-preservation laminate;
3) after an adhesive layer is uniformly coated on the upper surface of the polyurethane heat-insulation layer plate, a glass steel plate is covered on the polyurethane heat-insulation layer plate and is glued and shaped by a gluing machine;
4) turning the polyurethane insulation laminate treated in the step 3) for 180 degrees, uniformly coating an adhesive layer on the surface of the polyurethane insulation laminate, covering a glass steel plate on the polyurethane insulation laminate, and gluing and shaping by a gluing machine;
5) mixing and stirring the vinyl acetate emulsion, the epoxy resin, the glycerol, the anti-aging agent, the flatting agent, the film forming auxiliary agent, the dispersing agent, the defoaming agent, the preservative and the stabilizer according to the proportion to obtain a gel coat solution;
6) and uniformly coating the gel coat solution on the surfaces of the two glass steel plates by using a spraying mechanism, and quickly drying by using a drying mechanism to obtain the refrigerated heat-insulation composite plate.
6. The processing technology of the refrigeration heat-preservation composite board according to claim 5, characterized in that: the gluing temperature of the gluing machine is 60-80 ℃.
7. The processing technology of the refrigeration heat-preservation composite board according to claim 5, characterized in that: the spraying pressure of the spray gun is 0.2-0.3 MPa.
8. The processing technology of the refrigeration heat-preservation composite board according to claim 5, characterized in that: the drying mechanism dries through warm air, the drying temperature is 55-60 ℃, and the drying pressure is 0.04 MPa.
CN202110152417.XA 2021-02-03 2021-02-03 Cold-storage heat-insulation composite board and processing technology thereof Pending CN113276528A (en)

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CN116373411A (en) * 2023-04-28 2023-07-04 兰博(昆山)运载装备制造有限公司 Van-type refrigerator car heat-insulation compartment plate, manufacturing method and manufacturing production line

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CN201255289Y (en) * 2008-10-26 2009-06-10 扬州麦斯通复合材料有限公司 Extrusion molding polystyrene foam laminated glass steel composite board
CN102994032A (en) * 2012-11-26 2013-03-27 洪仁作 Antiseptic adhesive used for wood
CN108410289A (en) * 2018-03-29 2018-08-17 淮安齐瑞医疗用品有限公司 A kind of spanner water-repellent paint
CN108585546A (en) * 2018-07-19 2018-09-28 安徽省绩溪县华宇防火滤料有限公司 A kind of glass fibre infiltration glue

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Publication number Priority date Publication date Assignee Title
CN201255289Y (en) * 2008-10-26 2009-06-10 扬州麦斯通复合材料有限公司 Extrusion molding polystyrene foam laminated glass steel composite board
CN102994032A (en) * 2012-11-26 2013-03-27 洪仁作 Antiseptic adhesive used for wood
CN108410289A (en) * 2018-03-29 2018-08-17 淮安齐瑞医疗用品有限公司 A kind of spanner water-repellent paint
CN108585546A (en) * 2018-07-19 2018-09-28 安徽省绩溪县华宇防火滤料有限公司 A kind of glass fibre infiltration glue

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116373411A (en) * 2023-04-28 2023-07-04 兰博(昆山)运载装备制造有限公司 Van-type refrigerator car heat-insulation compartment plate, manufacturing method and manufacturing production line
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