CN117507428A - Preparation method of aluminum-plastic composite building template - Google Patents

Preparation method of aluminum-plastic composite building template Download PDF

Info

Publication number
CN117507428A
CN117507428A CN202311470360.3A CN202311470360A CN117507428A CN 117507428 A CN117507428 A CN 117507428A CN 202311470360 A CN202311470360 A CN 202311470360A CN 117507428 A CN117507428 A CN 117507428A
Authority
CN
China
Prior art keywords
aluminum
aluminum alloy
melt adhesive
hot melt
plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202311470360.3A
Other languages
Chinese (zh)
Other versions
CN117507428B (en
Inventor
陈恩斌
陈胜德
周家华
刘长青
程广开
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhongyang Dexin Technology Co ltd
Original Assignee
Zhongyang Dexin Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhongyang Dexin Technology Co ltd filed Critical Zhongyang Dexin Technology Co ltd
Priority to CN202311470360.3A priority Critical patent/CN117507428B/en
Publication of CN117507428A publication Critical patent/CN117507428A/en
Application granted granted Critical
Publication of CN117507428B publication Critical patent/CN117507428B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G9/00—Forming or shuttering elements for general use
    • E04G9/10—Forming or shuttering elements for general use with additional peculiarities such as surface shaping, insulating or heating, permeability to water or air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D7/00—Producing flat articles, e.g. films or sheets
    • 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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/046—Layered products comprising a layer of metal comprising metal 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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B32B15/085—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyolefins
    • 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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
    • 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
    • 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
    • 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
    • C09D133/00—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 only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
    • 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
    • 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
    • C09D7/63—Additives non-macromolecular organic
    • 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
    • C09D7/65—Additives macromolecular
    • 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
    • C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
    • 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
    • B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
    • B32B2255/102—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer synthetic resin or rubber layer being a foamed 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
    • B32B2255/24—Organic non-macromolecular 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
    • B32B2266/00—Composition of foam
    • B32B2266/02—Organic
    • B32B2266/0214—Materials belonging to B32B27/00
    • B32B2266/0221—Vinyl resin
    • B32B2266/0235—Vinyl halide, e.g. PVC, PVDC, PVF, PVDF
    • 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
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/304—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
    • B32B2307/70—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
    • B32B2419/00—Buildings or parts thereof

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention discloses a preparation method of an aluminum-plastic composite building template, which reduces the negative effects caused by the difference of the thermal expansion coefficients of a foaming plate and an aluminum alloy plate by preparing a heat insulation coating and coating the heat insulation coating on the PVC foaming plate; activating the aluminum alloy plate by preparing an activating agent to enhance the surface activity of the aluminum alloy so as to enhance the bonding strength of the aluminum alloy plate and the hot melt adhesive; the impact strength of the aluminum-plastic composite building template is enhanced by modifying the hot melt adhesive, so that the viscosity of the hot melt adhesive is reduced, and the permeability of the hot melt adhesive is enhanced.

Description

Preparation method of aluminum-plastic composite building template
Technical Field
The invention belongs to the technical field of building material manufacturing, and particularly relates to a preparation method of an aluminum-plastic composite building template.
Background
The building template is a temporary supporting structure, is manufactured according to design requirements, enables concrete structures and components to be formed according to specified positions and geometric dimensions, keeps the correct positions of the concrete structures and components, bears the self weight of the building template and external loads acting on the self weight of the building template, and has the functions of guaranteeing the quality and construction safety of concrete engineering, accelerating construction progress and reducing engineering cost.
At present, the types of building templates commonly used in construction engineering mainly comprise wood templates, steel wood templates, plastic templates, aluminum alloy templates and the like according to material classification, the wood templates are mainly easy to process, but the turnover times are few, the strength is low, the cost is high, the steel wood templates improve the strength and turnover times of the wood templates, but the steel also has the problems of easy rust and high construction difficulty, the plastic templates have good weather resistance, toughness and low price, but the plastic templates have the problems of low strength, large aluminum alloy plate rigidity, convenient assembly and high turnover rate, and the aluminum alloy plates have the problem of high price.
The building templates based on single materials have defects of different degrees, so that the building templates compounded by two materials, such as an aluminum-plastic composite building template, are generated, although the two materials are compounded to make up for the defects of each other, the thermal expansion coefficients of aluminum alloy plates and plastics are greatly different, the thermal stress difference can be generated after a larger temperature difference is passed, the aluminum-plastic composite building template has the problems of deformation, cracking, dimensional change and the like, the using effect of the aluminum-plastic composite building template is further influenced, meanwhile, the bonding strength between the aluminum-plastic composite building template and a hot melt adhesive is greatly influenced due to the problems of smoothness and cleanliness of the aluminum alloy plates, so that the aluminum alloy plates are required to be subjected to surface treatment, the aluminum alloy plates are generally activated by an activator at present, or the aluminum alloy plates are subjected to material with strong load bonding force to enhance the bonding performance, the existing activator has the poor activating effect, and the problems of high cost and more complex procedures.
Disclosure of Invention
The invention aims at: provides a preparation method of an aluminum-plastic composite building template.
In order to solve the technical problems, the technical scheme adopted by the invention comprises the following steps:
the preparation method of the aluminum-plastic composite building template comprises the following specific steps:
(1) Placing the PVC foaming plate and the PP plate in absolute ethyl alcohol, ultrasonically cleaning for 8-10 min, drying, uniformly coating a thermal insulation coating on the PVC foaming plate and the PP plate, and drying after coating is completed to obtain a PVC plastic core layer and a PP plastic core layer;
(2) Placing two pretreated aluminum alloy plates and a PP plastic core layer into a mold, uniformly coating hot melt adhesive on two sides of the PP plastic core layer and the surface of the pretreated aluminum alloy plate, which is in contact with the PP plastic core layer, carrying out hot pressing for 40-50 min at 100-120 ℃ under 2-3 MPa after coating, and cooling to obtain an aluminum-plastic plate;
(3) Placing two aluminum plastic plates and one PVC plastic core layer into a mold, uniformly coating hot melt adhesive on two sides of the PVC plastic core layer and the surface of the aluminum plastic plate, which is contacted with the PVC plastic core layer, carrying out hot pressing for 60-70 min at 70-90 ℃ under the pressure of 3-4 MPa after coating, and cooling to obtain an aluminum plastic composite plate;
(4) And trimming the aluminum-plastic composite board, coating waterproof paint, sealing edges, and drying to obtain the aluminum-plastic composite building template.
Further, the hot melt adhesive in the step (2) and the step (3) is EVA hot melt adhesive or PUR hot melt adhesive.
Further, the heat-insulating coating in the step (1) is composed of the following raw materials in parts by mass:
30-40 parts of acrylic emulsion, 12-20 parts of deionized water, 8-16 parts of glass beads, 6-8 parts of nano silicon dioxide aerogel, 10-20 parts of titanium dioxide, 3-5 parts of thickener, 1-2 parts of defoamer, 1-2 parts of dispersing agent and 2-3 parts of adhesion promoter;
the preparation method comprises the following specific preparation steps:
(1) Adding glass beads and titanium dioxide into a high-speed kneader, then adding an adhesion promoter into the high-speed kneader in a spray manner, heating to 60-70 ℃, stirring at a rotating speed of 800-1000 r/min for 10-12 min, and obtaining a mixture a after stirring;
(2) Firstly adding deionized water, a defoaming agent and a dispersing agent into a stirrer, stirring for 8-10 min at a rotating speed of 400-500 r/min, then continuously adding a thickening agent and nano silica aerogel, and continuously stirring for 5-7 min;
(3) Finally, adding the acrylic emulsion and the mixture a into a stirrer, increasing the rotating speed to 600-700 r/min, increasing the temperature to 35-40 ℃, and stirring for 15-25 min to obtain the heat-insulating coating;
wherein the thickener is hydroxypropyl methylcellulose, the defoamer is polyether defoamer, and the dispersant is zinc stearate.
The preparation method of the adhesion promoter comprises the following steps: mixing neoalkoxy tri (dioctyl acyloxy) titanate and isopropanol according to the mass ratio of 1:1-1.2, stirring for 6-8 min at the rotating speed of 200-300 r/min, then adding acrylic polyether phosphate with the mass of 0.5-0.7 times that of the neoalkoxy tri (dioctyl acyloxy) titanate, and continuing stirring for 6-8 min to obtain the adhesion promoter;
new alkoxy tris (dioctyl phosphate acyloxy) titanate was purchased from Hubei Tosoh chemical technology Co.
Further, the specific pretreatment steps of the pretreated aluminum alloy sheet in the step (2) are as follows:
firstly degreasing an aluminum alloy plate by using an acid degreasing agent, washing the aluminum alloy plate to be neutral by using water, then frosting the aluminum alloy plate to increase the roughness of the aluminum alloy plate to 6.3-12.5, finally immersing the aluminum alloy plate in an activating agent, heating the aluminum alloy plate to 35-45 ℃, and immersing the aluminum alloy plate for 60-70 min to obtain a pretreated aluminum alloy plate;
wherein the activator is: the tetradecyl-beta-D-glucopyranoside and dodecyl dimethyl hydroxypropyl sulfobetaine are mixed according to the mass ratio of 1:0.6-0.8.
Because a layer of heat-insulating coating is coated on the PVC foam board, the conventional hot melt adhesive cannot effectively penetrate the coating to effectively bond the whole aluminum-plastic composite building template, so that the impact strength and stability of the aluminum-plastic composite building template are affected, the problem is solved by modifying the hot melt adhesive, and the hot melt adhesive comprises the following specific modification steps:
the hot melt adhesive, N-N-butyl-o-sulfonyl benzoyl imide and glycerol polyoxyethylene ether hydroxystearate are mixed according to the following proportion
The mass ratio of the glycerol polyoxyethylene ether hydroxystearate to the hot melt adhesive is 1:0.4-0.5:0.3-0.4, the mixture is stirred for 10-12 min at the temperature of 70-74 ℃ and the rotating speed of 300-400 r/min, and then the N-N-butyl o-sulfonyl benzoyl imide is added and is continuously stirred for 15-20 min, so that the modified hot melt adhesive is obtained;
N-N-butyl-O-sulfonylbenzoylimine was purchased from Shanghai Nanot chemical technology Co.
The invention has the beneficial effects that:
(1) Because the free energy of the surfaces of the PVC foaming board and the PP board is lower and the polar functional group is lacking, the adhesion between the thermal insulation coating and the plastic board is enhanced by adding an adhesion promoter into the thermal insulation coating, the adhesion between the coating and the plastic board is enhanced by using titanate as the adhesion promoter, but the conventional titanate such as triisostearyl isopropyl titanate has poor water resistance, the waterproof property of the coating cannot be enhanced after the coating is solidified, the performance of the building template is possibly influenced by the fact that the building template absorbs water, meanwhile, the cost is reduced by adding pigment and filler into the coating, the more the amount of the pigment and filler is increased, the more the viscosity of the coating is influenced, the quality and uniformity of the coating are further influenced, and compared with triisostearyl isopropyl titanate, the binding force between the novel alkoxy tri (dioctyl phosphate) titanate and the plastic board is stronger and the water resistance is excellent, the adhesion between the thermal insulation coating and the plastic board and the waterproof property of the coating can be enhanced, and the thermal stability, the hardness, the oxidation resistance and the like of the coating can be also improved;
(2) The acrylic polyether phosphate also has excellent adhesive force of a plastic plate, has a synergistic effect with the novel alkoxy tri (dioctyl phosphate acyloxy) titanate, has excellent dispersibility, can uniformly mix the components of the heat-insulating coating, further enhances the properties of the heat-insulating coating, can improve the water resistance of the heat-insulating coating, and can reduce the water absorption of a building template;
(3) Compared with a conventional nonionic surfactant such as fatty alcohol polyoxyethylene ether, the tetradecyl-beta-D-glucopyranoside has high surface activity, can effectively remove pollutants on the surface of an aluminum alloy plate and enhance the surface tension and polarity of the surface of the aluminum alloy, so that the bonding performance between the aluminum alloy plate and a hot melt adhesive is improved, the tetradecyl-beta-D-glucopyranoside also has the property of thermotropic liquid crystal, can fully contact the hot melt adhesive in the hot pressing process of a building template, and then can generate a liquid crystal phase, and the liquid crystal phase can effectively form a hydrogen bond network to further enhance the bonding strength between the aluminum alloy plate and the hot melt adhesive;
(4) Dodecyl dimethyl hydroxypropyl sulfobetaine is also a surfactant with high surface activity, has a synergistic effect with tetradecyl-beta-D-glucopyranoside, has the characteristics of high-concentration acid and alkali resistance, can enhance the weather resistance of a building template to prolong the service life of the building template, has the characteristic of viscoelasticity, can increase the contact area of an aluminum alloy plate and hot melt adhesive, improves the bonding strength, and can absorb impact to enhance the integral stability of the building template;
(5) The N-N-butyl-o-sulfonyl-benzoyl imine has excellent permeability, so that the hot melt adhesive can well permeate into the coating, the bonding strength between the hot melt adhesive and the PVC foaming plate is enhanced, the impact strength and stability of the whole aluminum-plastic composite building template are further enhanced, the degreasing property of the N-N-butyl-o-sulfonyl-benzoyl imine is very weak compared with that of a conventional penetrating agent such as fatty alcohol polyoxyethylene ether, the degreasing does not negatively influence the hot melt adhesive, and meanwhile, the N-N-butyl-o-sulfonyl-benzoyl imine has good spreadability and stable physicochemical property, and the fluidity and stability of the hot melt adhesive can be enhanced;
(6) The glycerol polyoxyethylene ether hydroxystearate can be used as a plasticizer to regulate the viscosity of the hot melt adhesive, improve the fluidity of the hot melt adhesive so that the hot melt adhesive can better contact with and permeate into the coating, and also has excellent dispersibility and wettability, so that on one hand, the components of the hot melt adhesive can be uniformly mixed, on the other hand, the wettability of the hot melt adhesive can be enhanced, and on the other hand, the combination of the glycerol polyoxyethylene ether hydroxystearate and the plasticizer can effectively enhance the binding force between the hot melt adhesive and the heat-insulating coating, and has the complementary effect with N-N-butyl-o-sulfonyl benzoyl imide.
Detailed Description
The present invention will be described in further detail with reference to examples.
Example 1
Mixing neoalkoxy tri (dioctyl acyloxy) titanate and isopropanol according to the mass ratio of 1:1.1, stirring for 7min at the rotating speed of 250r/min, then adding 0.6 times of neoalkoxy tri (dioctyl acyloxy) titanate-quality acrylic polyether phosphate, and stirring for 7min to obtain the adhesion promoter;
(1) Adding 12 parts of glass beads and 15 parts of titanium dioxide into a high-speed kneader, then adding 2.5 parts of adhesion promoter into the high-speed kneader in a spray manner, heating to 65 ℃ and stirring at 900r/min for 11min to obtain a mixture a after stirring;
(2) Firstly, adding 16 parts of deionized water, 1.5 parts of polyether type defoamer and 1.5 parts of zinc stearate into a stirrer, stirring for 9min at the rotating speed of 450r/min, then continuously adding 4 parts of hydroxypropyl methylcellulose and 7 parts of nano silicon dioxide aerogel, and continuously stirring for 6min;
(3) And finally, adding 35 parts of the acrylic emulsion and the mixture a into a stirrer, increasing the rotating speed to 650r/min, increasing the temperature to 37 ℃, and stirring for 20min to obtain the thermal insulation coating.
Example 2
Mixing neoalkoxy tri (dioctyl acyloxy) titanate and isopropanol according to a mass ratio of 1:1, stirring for 8min at a rotating speed of 200r/min, then adding 0.7 times of neoalkoxy tri (dioctyl acyloxy) titanate-quality acrylic polyether phosphate, and stirring for 6min to obtain an adhesion promoter;
(1) Adding 8 parts of glass beads and 20 parts of titanium dioxide into a high-speed kneader, then adding 2 parts of adhesion promoter into the high-speed kneader in a spray manner, heating to 70 ℃, stirring at a speed of 800r/min for 12min, and obtaining a mixture a after stirring;
(2) Firstly, adding 12 parts of deionized water, 2 parts of polyether type defoamer and 1 part of zinc stearate into a stirrer, stirring for 8min at a rotating speed of 500r/min, then continuously adding 3 parts of hydroxypropyl methylcellulose and 8 parts of nano silicon dioxide aerogel, and continuously stirring for 5min;
(3) And finally, adding 30 parts of the acrylic emulsion and the mixture a into a stirrer, increasing the rotating speed to 700r/min, increasing the temperature to 35 ℃, and stirring for 25min to obtain the thermal insulation coating.
Example 3
Mixing neoalkoxy tri (dioctyl acyloxy) titanate and isopropanol according to the mass ratio of 1:1.2, stirring for 6min at the rotating speed of 300r/min, then adding 0.5 times of neoalkoxy tri (dioctyl acyloxy) titanate-quality acrylic polyether phosphate, and stirring for 8min to obtain the adhesion promoter;
(1) Adding 16 parts of glass beads and 10 parts of titanium dioxide into a high-speed kneader, then adding 3 parts of adhesion promoter into the high-speed kneader in a spray manner, heating to 60 ℃, stirring at a rotating speed of 1000r/min for 10min, and obtaining a mixture a after stirring;
(2) Firstly, adding 20 parts of deionized water, 1 part of polyether type defoamer and 2 parts of zinc stearate into a stirrer, stirring for 10min at a rotating speed of 400r/min, then continuously adding 5 parts of hydroxypropyl methylcellulose and 6 parts of nano silicon dioxide aerogel, and continuously stirring for 7min;
(3) And finally, adding 40 parts of the acrylic emulsion and the mixture a into a stirrer, increasing the rotating speed to 600r/min, increasing the temperature to 40 ℃, and stirring for 15min to obtain the thermal insulation coating.
Example 4
Mixing isopropyl titanate and isopropanol according to a mass ratio of 1:1.1, stirring for 7min at a rotating speed of 250r/min, then adding 0.6 times of polyether phosphate acrylate with the mass of neoalkoxy tri (dioctyl phosphate acyloxy) titanate, and continuing stirring for 7min to obtain the adhesion promoter.
The procedure is as in example 1.
Example 5
Mixing neoalkoxy tri (dioctyl acyloxy) titanate and isopropanol according to the mass ratio of 1:1.1, stirring for 7min at the rotating speed of 250r/min, then adding lauryl monoester phosphate with the mass of 0.6 times that of the neoalkoxy tri (dioctyl acyloxy) titanate, and stirring for 7min to obtain the adhesion promoter.
The procedure is as in example 1.
Example 6
Mixing neoalkoxy tri (dioctyl phosphate acyloxy) titanate and isopropanol according to the mass ratio of 1:1.1, stirring for 7min at the rotating speed of 50r/min, then adding 0.6 times of neoalkoxy tri (dioctyl phosphate acyloxy) titanate-quality acrylic polyether phosphate, and stirring for 7min to obtain the adhesion promoter.
The procedure is as in example 1.
Example 7
Mixing neoalkoxy tri (dioctyl phosphate acyloxy) titanate and isopropanol according to the mass ratio of 1:1.1, stirring for 7min at the rotating speed of 250r/min, then adding 0.6 times of neoalkoxy tri (dioctyl phosphate acyloxy) titanate-quality acrylic polyether phosphate, and stirring for 4min to obtain the adhesion promoter.
The procedure is as in example 1.
Example 8
(1) Adding 12 parts of glass beads and 15 parts of titanium dioxide into a high-speed kneader, then adding 2.5 parts of adhesion promoter into the high-speed kneader in a spray manner, heating to 80 ℃, stirring at 900r/min for 11min, and obtaining a mixture a after stirring;
(2) 16 parts of deionized water, 1.5 parts of polyether defoamer and 1.5 parts of zinc stearate are firstly added into a stirrer, and then the mixture is stirred
Stirring for 9min at a rotating speed of 450r/min, then continuously adding 4 parts of hydroxypropyl methylcellulose and 7 parts of nano silicon dioxide aerogel, and continuously stirring for 6min;
(3) And finally, adding 35 parts of the acrylic emulsion and the mixture a into a stirrer, increasing the rotating speed to 650r/min, increasing the temperature to 37 ℃, and stirring for 20min to obtain the thermal insulation coating.
The procedure is as in example 1.
Example 9
(1) Adding 12 parts of glass beads and 15 parts of titanium dioxide into a high-speed kneader, then adding 2.5 parts of adhesion promoter into the high-speed kneader in a spray manner, heating to 65 ℃ and stirring at a rotating speed of 500r/min for 11min, and obtaining a mixture a after stirring;
(2) 16 parts of deionized water, 1.5 parts of polyether defoamer and 1.5 parts of zinc stearate are firstly added into a stirrer, and then the mixture is stirred
Stirring for 9min at a rotating speed of 450r/min, then continuously adding 4 parts of hydroxypropyl methylcellulose and 7 parts of nano silicon dioxide aerogel, and continuously stirring for 6min;
(3) And finally, adding 35 parts of the acrylic emulsion and the mixture a into a stirrer, increasing the rotating speed to 650r/min, increasing the temperature to 37 ℃, and stirring for 20min to obtain the thermal insulation coating.
The procedure is as in example 1.
Example 10
(1) Adding 12 parts of glass beads and 15 parts of titanium dioxide into a high-speed kneader, then adding 2.5 parts of adhesion promoter into the high-speed kneader in a spray manner, heating to 65 ℃ and stirring for 5min at a rotating speed of 900r/min, and obtaining a mixture a after stirring;
(2) 16 parts of deionized water, 1.5 parts of polyether defoamer and 1.5 parts of zinc stearate are firstly added into a stirrer, and then the mixture is stirred
Stirring for 9min at a rotating speed of 450r/min, then continuously adding 4 parts of hydroxypropyl methylcellulose and 7 parts of nano silicon dioxide aerogel, and continuously stirring for 6min;
(3) And finally, adding 35 parts of the acrylic emulsion and the mixture a into a stirrer, increasing the rotating speed to 650r/min, increasing the temperature to 37 ℃, and stirring for 20min to obtain the thermal insulation coating.
The procedure is as in example 1.
Example 11
Firstly, adding 12 parts of glass beads, 15 parts of titanium dioxide, 16 parts of deionized water, 1.5 parts of polyether defoamer, 1.5 parts of zinc stearate, 4 parts of hydroxypropyl methylcellulose, 7 parts of nano silicon dioxide aerogel, 2.5 parts of adhesion promoter and 35 parts of acrylic emulsion into a stirrer, and stirring at 37 ℃ under the condition of 450r/min for 35min to obtain the heat-insulating coating.
The procedure is as in example 1.
Test 1:
the thermal insulation coatings obtained in examples 1-11 are coated on a plastic plate surface contacted with an aluminum alloy plate, an aluminum-plastic composite building template is prepared after the coating is formed, a test of high-low temperature circulation is carried out on the aluminum-plastic composite building template for 5 times according to JG/T418-2013 standard, calculation of a high-low temperature repeated dimensional change rate a is carried out according to the standard, meanwhile, whether the aluminum-plastic composite building template has problems of cracking, deformation and the like is observed, and specific data are shown in tables 1 and 2.
Table 1 building form appearance rating
Appearance grade Detailed phenomena
A No deformation and no cracking
B No deformation, crack number less than 0 and less than or equal to 2
C Slightly deformed, the number of cracks is more than 2 and less than or equal to 5
D Large deformation, 5 < number of cracks
Table 2 examples 1 to 11 aluminium plastic composite building template performance parameter table
Description of the embodiments a(％) Building template appearance
Example 1 0.03 A
Example 2 0.04 A
Example 3 0.04 A
Example 4 0.15 C
Example 5 0.17 C
Example 6 0.06 B
Example 7 0.05 B
Example 8 0.13 C
Example 9 0.07 B
Example 10 0.07 B
Example 11 0.23 D
It can be seen from table 1 that the high-low temperature repeated dimensional change rate of the aluminum-plastic composite building templates prepared in examples 1 to 3 is minimum and the appearance grade is at the highest grade; examples 4 and 5 replaced conventional titanate coupling agent and phosphate ester, respectively, which were not as effective as neoalkoxy tri (dioctyl phosphate acyloxy) titanate and acrylic polyether phosphate ester, and thus the high and low temperature repeated dimensional change rate was significantly increased and the appearance grade was decreased as compared with example 1; the reason why the data of examples 6, 7, 9 and 10 are inferior to those of example 1 may be that the stirring speed is reduced and the stirring time is reduced, resulting in uneven mixing, thereby affecting the effect of the adhesion promoter; example 8 is not as good as example 1 because the temperature during stirring is probably higher, and more side reactions occur, thereby affecting the performance of the thermal barrier coating; the reason for the worst data in example 11 may be that the components of the coating are changed to be added at one time, so that on one hand, the components cannot be mixed uniformly better, the performance difference exists after the coating is coated, the stress in the coating also exists, cracking is more easily generated, on the other hand, the effect of the titanate is not easily exerted due to the addition of the components at one time, and the superposition of the two reasons leads to the worst data in example 11.
The thermal insulation coating prepared in example 1 was used in the aluminum-plastic composite building templates of examples 12 to 31.
Example 12
The tetradecyl-beta-D-glucopyranoside and dodecyl dimethyl hydroxypropyl sulfobetaine are mixed according to the mass ratio of 1:0.7 to obtain the activator.
Firstly degreasing an aluminum alloy plate by using an acid degreasing agent, washing the aluminum alloy plate to be neutral by using water, then frosting the aluminum alloy plate to increase the roughness of the aluminum alloy plate to 6.3-12.5, finally immersing the aluminum alloy plate in an activating agent, heating the aluminum alloy plate to 40 ℃, and immersing the aluminum alloy plate for 65min to obtain the pretreated aluminum alloy plate.
(1) Placing the PVC foaming plate and the PP plate in absolute ethyl alcohol, ultrasonically cleaning for 9min, drying, uniformly coating the PVC foaming plate and the PP plate with a heat-insulating coating, and drying after coating to obtain a PVC plastic core layer and a PP plastic core layer;
(2) Placing two pretreated aluminum alloy plates and a PP plastic core layer into a mold, uniformly coating EVA hot melt adhesive on two sides of the PP plastic core layer and the surface of the pretreated aluminum alloy plate, which is in contact with the PP plastic core layer, carrying out hot pressing for 45min at 110 ℃ and 2.5MPa after coating, and cooling to obtain an aluminum-plastic plate;
(3) Placing two aluminum plastic plates and one PVC plastic core layer into a mold, uniformly coating EVA hot melt adhesive on two sides of the PVC plastic core layer and the surface of the aluminum plastic plate, which is contacted with the PVC plastic core layer, carrying out hot pressing for 65min at 80 ℃ and 3.5MPa after coating, and cooling to obtain an aluminum plastic composite plate;
(4) And trimming the aluminum-plastic composite board, coating waterproof paint, sealing edges, and drying to obtain the aluminum-plastic composite building template.
Example 13
The tetradecyl-beta-D-glucopyranoside and dodecyl dimethyl hydroxypropyl sulfobetaine are mixed according to the mass ratio of 1:0.8 to obtain the activator.
Firstly degreasing an aluminum alloy plate by using an acid degreasing agent, washing the aluminum alloy plate to be neutral by using water, then frosting the aluminum alloy plate to increase the roughness of the aluminum alloy plate to 6.3-12.5, finally immersing the aluminum alloy plate in an activating agent, heating the aluminum alloy plate to 35 ℃, and immersing the aluminum alloy plate for 70min to obtain the pretreated aluminum alloy plate.
(1) Placing the PVC foaming plate and the PP plate in absolute ethyl alcohol, ultrasonically cleaning for 8min, drying, uniformly coating the PVC foaming plate and the PP plate with a heat-insulating coating, and drying after coating to obtain a PVC plastic core layer and a PP plastic core layer;
(2) Placing two pretreated aluminum alloy plates and a PP plastic core layer into a mold, uniformly coating PUR hot melt adhesive on two sides of the PP plastic core layer and the surface of the pretreated aluminum alloy plate, which is in contact with the PP plastic core layer, carrying out hot pressing for 40min at 120 ℃ and 2MPa after coating, and cooling to obtain an aluminum-plastic plate;
(3) Placing two aluminum plastic plates and one PVC plastic core layer into a mold, uniformly coating PUR hot melt adhesive on two sides of the PVC plastic core layer and the surface of the aluminum plastic plate, which is contacted with the PVC plastic core layer, carrying out hot pressing for 70min at 70 ℃ and 4MPa after coating, and cooling to obtain an aluminum plastic composite plate;
(4) And trimming the aluminum-plastic composite board, coating waterproof paint, sealing edges, and drying to obtain the aluminum-plastic composite building template.
Example 14
The tetradecyl-beta-D-glucopyranoside and dodecyl dimethyl hydroxypropyl sulfobetaine are mixed according to the mass ratio of 1:0.6 to obtain the activator.
Firstly degreasing an aluminum alloy plate by using an acid degreasing agent, washing the aluminum alloy plate to be neutral by using water, then frosting the aluminum alloy plate to increase the roughness of the aluminum alloy plate to 6.3-12.5, finally immersing the aluminum alloy plate in an activating agent, heating the aluminum alloy plate to 45 ℃, and immersing the aluminum alloy plate for 60min to obtain the pretreated aluminum alloy plate.
(1) Placing the PVC foaming plate and the PP plate in absolute ethyl alcohol, ultrasonically cleaning for 10min, drying, uniformly coating the PVC foaming plate and the PP plate with a heat-insulating coating, and drying after coating to obtain a PVC plastic core layer and a PP plastic core layer;
(2) Placing two pretreated aluminum alloy plates and a PP plastic core layer into a mold, uniformly coating PUR hot melt adhesive on two sides of the PP plastic core layer and the surface of the pretreated aluminum alloy plate, which is in contact with the PP plastic core layer, carrying out hot pressing for 50min at 100 ℃ and 3MPa after coating, and cooling to obtain an aluminum-plastic plate;
(3) Placing two aluminum plastic plates and one PVC plastic core layer into a mold, uniformly coating PUR hot melt adhesive on two sides of the PVC plastic core layer and the surface of the aluminum plastic plate, which is contacted with the PVC plastic core layer, carrying out hot pressing for 60min at 90 ℃ and 3MPa after coating, and cooling to obtain an aluminum plastic composite plate;
(4) And trimming the aluminum-plastic composite board, coating waterproof paint, sealing edges, and drying to obtain the aluminum-plastic composite building template.
Example 15
Mixing fatty alcohol polyoxyethylene ether and dodecyl dimethyl hydroxypropyl sulfobetaine according to a mass ratio of 1:0.7 to obtain the activator.
The procedure is as in example 12.
Example 16
And mixing tetradecyl-beta-D-glucopyranoside and dodecylaminopropionic acid according to the mass ratio of 1:0.7 to obtain the activator.
The procedure is as in example 12.
Example 17
Degreasing an aluminum alloy plate by using an acid degreasing agent, then frosting the aluminum alloy plate to increase the roughness of the aluminum alloy plate to 6.3-12.5, finally immersing the aluminum alloy plate in an activating agent, heating to 40 ℃, and immersing for 65min to obtain the pretreated aluminum alloy plate.
The procedure is as in example 12.
Example 18
The method comprises the steps of degreasing an aluminum alloy plate by using an acid degreasing agent, washing the aluminum alloy plate to be neutral by using water, immersing the aluminum alloy plate in an activating agent, heating to 40 ℃, and immersing for 65 minutes to obtain the pretreated aluminum alloy plate.
The procedure is as in example 12.
Example 19
Firstly degreasing an aluminum alloy plate by using an acid degreasing agent, washing the aluminum alloy plate to be neutral by using water, then frosting the aluminum alloy plate to increase the roughness of the aluminum alloy plate to 6.3-12.5, sandblasting, finally immersing the aluminum alloy plate in an activating agent, adjusting the temperature to 15 ℃, and immersing the aluminum alloy plate for 65min to obtain the pretreated aluminum alloy plate.
The procedure is as in example 12.
Example 20
Firstly degreasing an aluminum alloy plate by using an acid degreasing agent, washing the aluminum alloy plate to be neutral by using water, then frosting the aluminum alloy plate to increase the roughness of the aluminum alloy plate to 6.3-12.5, sandblasting, finally immersing the aluminum alloy plate in an activating agent, heating to 40 ℃, and immersing for 40min to obtain the pretreated aluminum alloy plate.
The procedure is as in example 12.
Test 2:
the peel strength between two aluminum alloy plates and three plastic cores of the aluminum-plastic composite building templates prepared in examples 12 to 20 is measured according to the GB/T17748-2008 standard method, and the minimum peel strength and the maximum peel strength are recorded, wherein the minimum peel strength is the minimum peel strength when cracks appear between any two plates in the measuring process, the maximum peel strength is the maximum peel strength after all the five plates are separated, and the specific measuring results are shown in Table 3.
Table 3 data sheet for peel strength of aluminum-plastic composite building templates in examples 12 to 20
It can be seen from table 3 that the minimum and maximum peel strengths of the aluminum plastic composite building templates of examples 12 to 14 are the highest and the difference is the smallest, indicating that the stability of the aluminum plastic composite building templates of examples 1 to 3 is the best, and that the minimum and maximum peel strengths of examples 15 and 16 are the lowest, probably because the components of the activator are replaced so that the activator effect is reduced, while the difference between the minimum and maximum peel strengths is the largest, indicating that the stability of the aluminum plastic composite building templates of examples 15 and 16 is the worst; example 17 the reason for the reduced minimum and maximum peel strength and stability may be that the acid degreasing agent on the unwashed aluminum alloy sheet, the residual acid degreasing agent affecting the performance of the activator; the reason for the decrease in the minimum and maximum peel strength and stability of example 18 may be that the aluminum alloy sheet was not frosted, so that the effect of the activator adhering to the aluminum alloy sheet was poor; example 19 the reason for the reduced minimum and maximum peel strength and stability may be that the activation temperature is low, which affects the activation effect of the activator; the reason for the reduced minimum and maximum peel strength and stability of example 20 may be that the activation effect of the activator is not fully exerted after the impregnation time is reduced.
Example 21
The EVA hot melt adhesive, N-N-butyl-o-sulfonyl-benzoyl imide and glycerol polyoxyethylene ether hydroxystearate are proportioned according to the mass ratio of 1:0.45:0.35, the glycerol polyoxyethylene ether hydroxystearate is firstly added into the EVA hot melt adhesive, and the mixture is stirred for 11min at the temperature of 72 ℃ at the rotating speed of 350r/min, and then the N-N-butyl-o-sulfonyl-benzoyl imide is added and is continuously stirred for 17min, so that the modified hot melt adhesive is obtained.
The tetradecyl-beta-D-glucopyranoside and dodecyl dimethyl hydroxypropyl sulfobetaine are mixed according to the mass ratio of 1:0.7 to obtain the activator.
Firstly degreasing an aluminum alloy plate by using an acid degreasing agent, washing the aluminum alloy plate to be neutral by using water, then frosting the aluminum alloy plate to increase the roughness of the aluminum alloy plate to 6.3-12.5, finally immersing the aluminum alloy plate in an activating agent, heating the aluminum alloy plate to 40 ℃, and immersing the aluminum alloy plate for 65min to obtain the pretreated aluminum alloy plate.
(1) Placing the PVC foaming plate and the PP plate in absolute ethyl alcohol, ultrasonically cleaning for 9min, drying, uniformly coating the PVC foaming plate and the PP plate with a heat-insulating coating, and drying after coating to obtain a PVC plastic core layer and a PP plastic core layer;
(2) Placing the two pretreated aluminum alloy plates and the PP plastic core layer into a mold, uniformly coating the modified hot melt adhesive on the PP plastic core layer and the surface of the pretreated aluminum alloy plate, which is in contact with the PP plastic core layer, carrying out hot pressing for 45min at 110 ℃ and 2.5MPa after coating, and cooling to obtain an aluminum-plastic plate;
(3) Placing two aluminum plastic plates and one PVC plastic core layer into a mold, uniformly coating the modified hot melt adhesive on two sides of the PVC plastic core layer and the surface of the aluminum plastic plate contacted with the PVC plastic core layer, hot-pressing at 80 ℃ for 65min under the pressure of 3.5MPa after coating, and cooling to obtain an aluminum plastic composite plate;
(4) And trimming the aluminum-plastic composite board, coating waterproof paint, sealing edges, and drying to obtain the aluminum-plastic composite building template.
Example 22
The preparation method comprises the steps of proportioning the PUR hot melt adhesive, N-N-butyl-o-sulfonyl-benzoyl imide and glycerol polyoxyethylene ether hydroxystearate according to the mass ratio of 1:0.4:0.4, adding the glycerol polyoxyethylene ether hydroxystearate into the PUR hot melt adhesive, stirring at the temperature of 74 ℃ for 12min at the rotating speed of 300r/min, and then adding the N-N-butyl-o-sulfonyl-benzoyl imide, and continuing stirring for 15min to obtain the modified hot melt adhesive.
The tetradecyl-beta-D-glucopyranoside and dodecyl dimethyl hydroxypropyl sulfobetaine are mixed according to the mass ratio of 1:0.7 to obtain the activator.
Firstly degreasing an aluminum alloy plate by using an acid degreasing agent, washing the aluminum alloy plate to be neutral by using water, then frosting the aluminum alloy plate to increase the roughness of the aluminum alloy plate to 6.3-12.5, finally immersing the aluminum alloy plate in an activating agent, heating the aluminum alloy plate to 40 ℃, and immersing the aluminum alloy plate for 65min to obtain the pretreated aluminum alloy plate.
(1) Placing the PVC foaming plate and the PP plate in absolute ethyl alcohol, ultrasonically cleaning for 9min, drying, uniformly coating the PVC foaming plate and the PP plate with a heat-insulating coating, and drying after coating to obtain a PVC plastic core layer and a PP plastic core layer;
(2) Placing the two pretreated aluminum alloy plates and the PP plastic core layer into a mold, uniformly coating the modified hot melt adhesive on the PP plastic core layer and the surface of the pretreated aluminum alloy plate, which is in contact with the PP plastic core layer, carrying out hot pressing for 45min at 110 ℃ and 2.5MPa after coating, and cooling to obtain an aluminum-plastic plate;
(3) Placing two aluminum plastic plates and one PVC plastic core layer into a mold, uniformly coating the modified hot melt adhesive on two sides of the PVC plastic core layer and the surface of the aluminum plastic plate contacted with the PVC plastic core layer, hot-pressing at 80 ℃ for 65min under the pressure of 3.5MPa after coating, and cooling to obtain an aluminum plastic composite plate;
(4) And trimming the aluminum-plastic composite board, coating waterproof paint, sealing edges, and drying to obtain the aluminum-plastic composite building template.
Example 23
The EVA hot melt adhesive, N-N-butyl-o-sulfonyl-benzoyl imide and glycerol polyoxyethylene ether hydroxystearate are proportioned according to the mass ratio of 1:0.5:0.3, the glycerol polyoxyethylene ether hydroxystearate is firstly added into the EVA hot melt adhesive, and the mixture is stirred for 10min at the temperature of 70 ℃ at the rotating speed of 400r/min, and then the N-N-butyl-o-sulfonyl-benzoyl imide is added and is continuously stirred for 20min, so that the modified hot melt adhesive is obtained.
The tetradecyl-beta-D-glucopyranoside and dodecyl dimethyl hydroxypropyl sulfobetaine are mixed according to the mass ratio of 1:0.7 to obtain the activator.
Firstly degreasing an aluminum alloy plate by using an acid degreasing agent, washing the aluminum alloy plate to be neutral by using water, then frosting the aluminum alloy plate to increase the roughness of the aluminum alloy plate to 6.3-12.5, finally immersing the aluminum alloy plate in an activating agent, heating the aluminum alloy plate to 40 ℃, and immersing the aluminum alloy plate for 65min to obtain the pretreated aluminum alloy plate.
(1) Placing the PVC foaming plate and the PP plate in absolute ethyl alcohol, ultrasonically cleaning for 9min, drying, uniformly coating the PVC foaming plate and the PP plate with a heat-insulating coating, and drying after coating to obtain a PVC plastic core layer and a PP plastic core layer;
(2) Placing the two pretreated aluminum alloy plates and the PP plastic core layer into a mold, uniformly coating the modified hot melt adhesive on the PP plastic core layer and the surface of the pretreated aluminum alloy plate, which is in contact with the PP plastic core layer, carrying out hot pressing for 45min at 110 ℃ and 2.5MPa after coating, and cooling to obtain an aluminum-plastic plate;
(3) Placing two aluminum plastic plates and one PVC plastic core layer into a mold, uniformly coating the modified hot melt adhesive on two sides of the PVC plastic core layer and the surface of the aluminum plastic plate contacted with the PVC plastic core layer, hot-pressing at 80 ℃ for 65min under the pressure of 3.5MPa after coating, and cooling to obtain an aluminum plastic composite plate;
(4) And trimming the aluminum-plastic composite board, coating waterproof paint, sealing edges, and drying to obtain the aluminum-plastic composite building template.
Example 24
The EVA hot melt adhesive, sodium dodecyl benzene sulfonate and glycerol polyoxyethylene ether hydroxystearate are proportioned according to the mass ratio of 1:0.45:0.35, the glycerol polyoxyethylene ether hydroxystearate is firstly added into the EVA hot melt adhesive, and the mixture is stirred for 11min at the temperature of 72 ℃ at the rotating speed of 350r/min, and then the N-N-butyl o-sulfonyl benzoyl imine is added and is continuously stirred for 17min, so that the modified hot melt adhesive is obtained.
The procedure is as in example 21.
Example 25
The preparation method comprises the steps of proportioning EVA hot melt adhesive, N-N-butyl-o-sulfonyl-benzoyl imide and calcium stearate according to a mass ratio of 1:0.45:0.35, adding glycerol polyoxyethylene ether hydroxystearate into the EVA hot melt adhesive, stirring at a temperature of 72 ℃ for 11min at a rotating speed of 350r/min, and then adding the N-N-butyl-o-sulfonyl-benzoyl imide, and continuing stirring for 17min to obtain the modified hot melt adhesive.
The procedure is as in example 21.
Example 26
The EVA hot melt adhesive, N-N-butyl-o-sulfonyl-benzoyl imide and glycerol polyoxyethylene ether hydroxystearate are proportioned according to the mass ratio of 1:0.45:0.35, the glycerol polyoxyethylene ether hydroxystearate is firstly added into the EVA hot melt adhesive, and the mixture is stirred for 11min at the temperature of 60 ℃ at the rotating speed of 350r/min, and then the N-N-butyl-o-sulfonyl-benzoyl imide is added and is continuously stirred for 17min, so that the modified hot melt adhesive is obtained.
The procedure is as in example 21.
Example 27
The EVA hot melt adhesive, N-N-butyl-o-sulfonyl-benzoyl imide and glycerol polyoxyethylene ether hydroxystearate are proportioned according to the mass ratio of 1:0.45:0.35, the glycerol polyoxyethylene ether hydroxystearate is firstly added into the EVA hot melt adhesive, and the mixture is stirred for 11min at the temperature of 72 ℃ at the rotating speed of 150r/min, and then the N-N-butyl-o-sulfonyl-benzoyl imide is added and is continuously stirred for 17min, so that the modified hot melt adhesive is obtained.
The procedure is as in example 21.
Example 28
The EVA hot melt adhesive, N-N-butyl-o-sulfonyl-benzoyl imide and glycerol polyoxyethylene ether hydroxystearate are proportioned according to the mass ratio of 1:0.45:0.35, the glycerol polyoxyethylene ether hydroxystearate is firstly added into the EVA hot melt adhesive, and the mixture is stirred for 5min at the temperature of 72 ℃ at the rotating speed of 350r/min, and then the N-N-butyl-o-sulfonyl-benzoyl imide is added and is continuously stirred for 10min, so that the modified hot melt adhesive is obtained.
The procedure is as in example 21.
Example 29
(1) Placing the PVC foaming plate and the PP plate in absolute ethyl alcohol, ultrasonically cleaning for 9min, drying, uniformly coating the PVC foaming plate and the PP plate with a heat-insulating coating, and drying after coating to obtain a PVC plastic core layer and a PP plastic core layer;
(2) Placing the two pretreated aluminum alloy plates and the PP plastic core layer into a mold, uniformly coating the modified hot melt adhesive on the PP plastic core layer and the surface of the pretreated aluminum alloy plate, which is in contact with the PP plastic core layer, carrying out hot pressing for 45min at 160 ℃ and 2.5MPa after coating, and cooling to obtain an aluminum-plastic plate;
(3) Placing two aluminum plastic plates and one PVC plastic core layer into a mold, uniformly coating the modified hot melt adhesive on two sides of the PVC plastic core layer and the surface of the aluminum plastic plate contacted with the PVC plastic core layer, hot-pressing at 80 ℃ for 65min under the pressure of 3.5MPa after coating, and cooling to obtain an aluminum plastic composite plate;
(4) And trimming the aluminum-plastic composite board, coating waterproof paint, sealing edges, and drying to obtain the aluminum-plastic composite building template.
The procedure is as in example 21.
Example 30
(1) Placing the PVC foaming plate and the PP plate in absolute ethyl alcohol, ultrasonically cleaning for 9min, drying, uniformly coating the PVC foaming plate and the PP plate with a heat-insulating coating, and drying after coating to obtain a PVC plastic core layer and a PP plastic core layer;
(2) Placing the two pretreated aluminum alloy plates and the PP plastic core layer into a mold, uniformly coating the modified hot melt adhesive on the PP plastic core layer and the surface of the pretreated aluminum alloy plate, which is in contact with the PP plastic core layer, carrying out hot pressing for 45min at 110 ℃ and 4MPa after coating, and cooling to obtain an aluminum-plastic plate;
(3) Placing two aluminum plastic plates and one PVC plastic core layer into a mold, uniformly coating the modified hot melt adhesive on two sides of the PVC plastic core layer and the surface of the aluminum plastic plate contacted with the PVC plastic core layer, hot-pressing at 80 ℃ for 65min under the pressure of 3.5MPa after coating, and cooling to obtain an aluminum plastic composite plate;
(4) And trimming the aluminum-plastic composite board, coating waterproof paint, sealing edges, and drying to obtain the aluminum-plastic composite building template.
The procedure is as in example 21.
Example 31
(1) Placing the PVC foaming plate and the PP plate in absolute ethyl alcohol, ultrasonically cleaning for 9min, drying, uniformly coating the PVC foaming plate and the PP plate with a heat-insulating coating, and drying after coating to obtain a PVC plastic core layer and a PP plastic core layer;
(2) Placing the two pretreated aluminum alloy plates and the PP plastic core layer into a mold, uniformly coating the modified hot melt adhesive on the PP plastic core layer and the surface of the pretreated aluminum alloy plate, which is in contact with the PP plastic core layer, carrying out hot pressing for 70min at 110 ℃ and 2.5MPa after coating, and cooling to obtain an aluminum-plastic plate;
(3) Placing two aluminum plastic plates and one PVC plastic core layer into a mold, uniformly coating the modified hot melt adhesive on two sides of the PVC plastic core layer and the surface of the aluminum plastic plate contacted with the PVC plastic core layer, hot-pressing at 80 ℃ for 65min under the pressure of 3.5MPa after coating, and cooling to obtain an aluminum plastic composite plate;
(4) And trimming the aluminum-plastic composite board, coating waterproof paint, sealing edges, and drying to obtain the aluminum-plastic composite building template.
The procedure is as in example 21.
Test 3:
the impact resistance of the aluminum-plastic composite building templates prepared in examples 21 to 31 was measured according to the GB/T1043.1-2008 standard, and the interlayer peel strength of two aluminum alloy plates and three plastic cores was measured according to the GB/T17748-2008 standard, and the minimum peel strength and the maximum peel strength were recorded, wherein the minimum peel strength is the strength when cracks appear between any two plates in the measurement process, namely the minimum peel strength, and the maximum peel strength is the maximum peel strength after all five plates are separated, and specific data are shown in Table 4.
Table 4 table of the properties of the aluminum-plastic composite building templates of examples 21 to 31
It can be seen from Table 4 that the transverse and longitudinal impact strengths of examples 21 to 23 are at the highest level; examples 24 and 25 replaced the hot melt adhesive modifying component, resulting in a significant decrease in impact strength in both the transverse and longitudinal directions of the examples; the stirring temperature, stirring speed and stirring time are respectively reduced in the examples 26-28, so that the components in the modified hot melt adhesive are not uniformly mixed, the effect of the modified hot melt adhesive is affected, and the impact strength of the three examples is reduced compared with that of the example 1; the reason for the decrease in impact strength in example 29 may be that the temperature during hot pressing is increased, and the hot melt adhesive is carbonized due to the higher temperature, so that the performance of the hot melt adhesive is affected; the reason for the decrease in impact strength of example 30 may be that after increasing the pressure at the time of hot pressing, the hot melt adhesive may be extruded out of the adhesive joint interface, the amount of the hot melt adhesive is reduced and the adhesive joint thickness is also thinned, thereby causing the adhesive joint to be weak and affecting the impact strength; the reason for the decrease in impact strength in example 31 may be that the hot melt adhesive generates side reactions such as oxidative decomposition at high temperature due to too long hot press time, so as to affect the impact strength of the aluminum-plastic composite building template, and meanwhile, as can be seen from the minimum and maximum peel strengths in examples 21 to 31, the peel strength between the aluminum alloy plate and the hot melt adhesive can be enhanced after the hot melt adhesive is modified, so that various performances of the aluminum-plastic composite building template are further improved.

Claims (6)

1. A preparation method of an aluminum-plastic composite building template is characterized by comprising the following steps: the method comprises the following specific steps:
(1) Placing the PVC foaming plate and the PP plate in absolute ethyl alcohol, ultrasonically cleaning for 8-10 min, drying, uniformly coating a thermal insulation coating on the PVC foaming plate and the PP plate, and drying after coating is completed to obtain a PVC plastic core layer and a PP plastic core layer;
(2) Placing two pretreated aluminum alloy plates and a PP plastic core layer into a mold, uniformly coating hot melt adhesive on two sides of the PP plastic core layer and the surface of the pretreated aluminum alloy plate, which is in contact with the PP plastic core layer, carrying out hot pressing for 40-50 min at 100-120 ℃ under 2-3 MPa after coating, and cooling to obtain an aluminum-plastic plate;
(3) Placing two aluminum plastic plates and one PVC plastic core layer into a mold, uniformly coating hot melt adhesive on two sides of the PVC plastic core layer and the surface of the aluminum plastic plate, which is contacted with the PVC plastic core layer, carrying out hot pressing for 60-70 min at 70-90 ℃ under the pressure of 3-4 MPa after coating, and cooling to obtain an aluminum plastic composite plate;
(4) And trimming the aluminum-plastic composite board, coating waterproof paint, sealing edges, and drying to obtain the aluminum-plastic composite building template.
2. The method for preparing the aluminum-plastic composite building template as claimed in claim 1, wherein the method comprises the following steps: the hot melt adhesive is EVA hot melt adhesive or PUR hot melt adhesive.
3. The method for preparing the aluminum-plastic composite building template as claimed in claim 1, wherein the method comprises the following steps: the heat-insulating coating comprises the following raw materials in parts by mass:
30-40 parts of acrylic emulsion, 12-20 parts of deionized water, 8-16 parts of glass beads, 6-8 parts of nano silicon dioxide aerogel, 10-20 parts of titanium dioxide, 3-5 parts of hydroxypropyl methyl cellulose, 1-2 parts of polyether defoamer, 1-2 parts of zinc stearate and 2-3 parts of adhesion promoter;
the preparation method comprises the following specific preparation steps:
(1) Adding glass beads and titanium dioxide into a high-speed kneader, then adding an adhesion promoter into the high-speed kneader in a spray manner, heating to 60-70 ℃, stirring at a rotating speed of 800-1000 r/min for 10-12 min, and obtaining a mixture a after stirring;
(2) Firstly adding deionized water, polyether type defoamer and zinc stearate into a stirrer, stirring for 8-10 min at a rotating speed of 400-500 r/min, then continuously adding hydroxypropyl methylcellulose and nano silicon dioxide aerogel, and continuously stirring for 5-7 min;
(3) And finally, adding the acrylic emulsion and the mixture a into a stirrer, increasing the rotating speed to 600-700 r/min, increasing the temperature to 35-40 ℃, and stirring for 15-25 min to obtain the heat-insulating coating.
4. The method for preparing the aluminum-plastic composite building template as claimed in claim 2, wherein the method comprises the following steps: the preparation method of the adhesion promoter comprises the following steps:
mixing neoalkoxy tri (dioctyl acyloxy) titanate and isopropanol according to the mass ratio of 1:1-1.2, stirring for 6-8 min at the rotating speed of 200-300 r/min, then adding acrylic polyether phosphate with the mass of 0.5-0.7 times that of the neoalkoxy tri (dioctyl acyloxy) titanate, and continuing stirring for 6-8 min to obtain the adhesion promoter.
5. The method for preparing the aluminum-plastic composite building template as claimed in claim 1, wherein the method comprises the following steps: the specific pretreatment steps of the pretreated aluminum alloy plate are as follows:
firstly degreasing an aluminum alloy plate by using an acid degreasing agent, washing the aluminum alloy plate to be neutral by using water, then frosting the aluminum alloy plate to increase the roughness of the aluminum alloy plate to 6.3-12.5, finally immersing the aluminum alloy plate in an activating agent, heating the aluminum alloy plate to 35-45 ℃, and immersing the aluminum alloy plate for 60-70 min to obtain a pretreated aluminum alloy plate;
wherein the activator is: the tetradecyl-beta-D-glucopyranoside and dodecyl dimethyl hydroxypropyl sulfobetaine are mixed according to the mass ratio of 1:0.6-0.8.
6. The method for preparing the aluminum-plastic composite building template as claimed in claim 1, wherein the method comprises the following steps: the hot melt adhesive also comprises a modification method, and the specific modification steps are as follows:
the preparation method comprises the steps of proportioning the hot melt adhesive, N-N-butyl-O-sulfonyl-benzoyl imide and glycerol polyoxyethylene ether hydroxystearate according to the mass ratio of 1:0.4-0.5:0.3-0.4, adding the glycerol polyoxyethylene ether hydroxystearate into the hot melt adhesive, stirring at the temperature of 70-74 ℃ for 10-12 min at the rotating speed of 300-400 r/min, and then adding the N-N-butyl-O-sulfonyl-benzoyl imide, and continuing stirring for 15-20 min to obtain the modified hot melt adhesive.
CN202311470360.3A 2023-11-07 2023-11-07 Preparation method of aluminum-plastic composite building template Active CN117507428B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311470360.3A CN117507428B (en) 2023-11-07 2023-11-07 Preparation method of aluminum-plastic composite building template

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311470360.3A CN117507428B (en) 2023-11-07 2023-11-07 Preparation method of aluminum-plastic composite building template

Publications (2)

Publication Number Publication Date
CN117507428A true CN117507428A (en) 2024-02-06
CN117507428B CN117507428B (en) 2024-06-07

Family

ID=89752347

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311470360.3A Active CN117507428B (en) 2023-11-07 2023-11-07 Preparation method of aluminum-plastic composite building template

Country Status (1)

Country Link
CN (1) CN117507428B (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008154839A1 (en) * 2007-06-15 2008-12-24 Institute Of Chemistry, Chinese Academy Of Science A sheet composite material with dual surface properties and its preparation process
CN103692723A (en) * 2013-12-23 2014-04-02 广州金发碳纤维新材料发展有限公司 Ultrathin metal sheet sandwich structural body and preparation method thereof
CN108795181A (en) * 2018-07-03 2018-11-13 合肥利裕泰玻璃制品有限公司 A kind of building glass insulating moulding coating and preparation method thereof
CN110253996A (en) * 2019-05-22 2019-09-20 东莞华尔泰装饰材料有限公司 A kind of aluminium-plastic panel of fire protection flame retarding and preparation method thereof
CN112322124A (en) * 2020-10-21 2021-02-05 湖南兴龙环境艺术工程有限公司 Heat-preserving and heat-insulating building glass
CN116335385A (en) * 2023-03-20 2023-06-27 中阳德欣科技有限公司 Preparation process of light high-strength aluminum-plastic composite building template
US20230264452A1 (en) * 2020-07-13 2023-08-24 Gong Yi Van-Research Innovation Composite Material Co. Ltd Heat insulation and preservation composite board and preparation method thereof

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008154839A1 (en) * 2007-06-15 2008-12-24 Institute Of Chemistry, Chinese Academy Of Science A sheet composite material with dual surface properties and its preparation process
CN103692723A (en) * 2013-12-23 2014-04-02 广州金发碳纤维新材料发展有限公司 Ultrathin metal sheet sandwich structural body and preparation method thereof
CN108795181A (en) * 2018-07-03 2018-11-13 合肥利裕泰玻璃制品有限公司 A kind of building glass insulating moulding coating and preparation method thereof
CN110253996A (en) * 2019-05-22 2019-09-20 东莞华尔泰装饰材料有限公司 A kind of aluminium-plastic panel of fire protection flame retarding and preparation method thereof
US20230264452A1 (en) * 2020-07-13 2023-08-24 Gong Yi Van-Research Innovation Composite Material Co. Ltd Heat insulation and preservation composite board and preparation method thereof
CN112322124A (en) * 2020-10-21 2021-02-05 湖南兴龙环境艺术工程有限公司 Heat-preserving and heat-insulating building glass
CN116335385A (en) * 2023-03-20 2023-06-27 中阳德欣科技有限公司 Preparation process of light high-strength aluminum-plastic composite building template

Also Published As

Publication number Publication date
CN117507428B (en) 2024-06-07

Similar Documents

Publication Publication Date Title
CN101487297A (en) Production method for multifunctional rigid foam polyurethane composite heat-conservation board
CN101487299A (en) Production method for multifunctional rigid foam polyurethane composite heat-conservation board
CN102817453B (en) Novel high-strength low-volume-weight heat preservation fireproof decoration integration plate and preparation method thereof
CN110776869A (en) High-temperature-resistant high-strength polyurethane structural adhesive and preparation method thereof
CN110271245A (en) Polyurethane colorful steel plate and preparation method thereof
CN117507428B (en) Preparation method of aluminum-plastic composite building template
CN114232927B (en) External wall heat-insulation decorative plate and preparation method thereof
CN113319962B (en) Control process for preventing large shaving damage of PB plate
CN111718162A (en) Fiber-reinforced foamed cement composite insulation board and preparation method thereof
CN108410352B (en) Water-based thin steel structure fireproof coating, fireproof mud and preparation method thereof
CN116335385A (en) Preparation process of light high-strength aluminum-plastic composite building template
CN110951431A (en) Composite adhesive and preparation process thereof
CN116554785A (en) Graphene self-healing waterproof coating
CN110922777B (en) Light composite partition board and processing technology thereof
CN114133913A (en) Waste molasses-based high-strength environment-friendly formaldehyde-free adhesive and preparation method and application thereof
CN107236187B (en) Production method of foamed sheet
CN115260665B (en) Environment-friendly low-smoke halogen-free high-flame-retardance butyl rubber damping sheet and preparation method thereof
CN114311879B (en) Manufacturing method of fireproof heat-insulation composite board and manufactured composite board
CN111592722A (en) Preparation method of high-toughness and high-strength foam board
KR20100040480A (en) Composition and mtehod for manufacturing sound proof wall using thermosetting complex materials
CN104962095B (en) A kind of high strength cement template and preparation method thereof
CN114382228B (en) Foamed ceramic composite wallboard and application thereof
CN110467793B (en) Heat insulation material for outer wall of steel pipeline and preparation method thereof
CN117510181B (en) Super-hydrophobic and enhanced silicon dioxide aerogel felt and preparation method thereof
CN110103493B (en) Preparation method of high-performance concrete waterproof material

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant