CN112937019A - Heat-insulating wall of environment-friendly building and preparation method thereof - Google Patents

Heat-insulating wall of environment-friendly building and preparation method thereof Download PDF

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Publication number
CN112937019A
CN112937019A CN202110106103.6A CN202110106103A CN112937019A CN 112937019 A CN112937019 A CN 112937019A CN 202110106103 A CN202110106103 A CN 202110106103A CN 112937019 A CN112937019 A CN 112937019A
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mixing
phenolic foam
mixture
layer
foam board
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Chinese (zh)
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钟琳
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Hangzhou Weixiao Technology Co ltd
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Hangzhou Weixiao Technology Co ltd
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B13/00—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' 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
    • B32B13/00—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material
    • B32B13/14—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • 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
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    • B32B5/02—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 structural features of a fibrous or filamentary layer
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    • C08J9/14—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent organic
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
    • E04B1/78—Heat insulating elements
    • E04B1/80—Heat insulating elements slab-shaped
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/88—Curtain walls
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    • 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
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    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
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Abstract

The invention discloses a heat-insulating wall body of an environment-friendly building and a preparation method thereof, wherein the heat-insulating wall body of the environment-friendly building comprises a base wall body, a bonding layer, a heat-insulating layer, a plastering layer and a finishing layer which are sequentially overlapped from inside to outside, the heat-insulating layer is a phenolic foam board, and the phenolic foam board is prepared by the following method: 1) first mixing aluminum silicate fibers, glass fibers, a silane coupling agent and a solvent to prepare a mixture A; 2) secondly, mixing the polyurethane prepolymer, the dispersing agent and the mixture A, and then adjusting the pH of the system to be alkaline to prepare a mixture B; 3) sequentially carrying out third mixing, foaming and curing on the phenolic resin, the surfactant, the filler, the curing agent, n-pentane, isopentane, the bicarbonate and the mixture B to prepare a phenolic foam board; the heat-insulating wall body of the environment-friendly building has excellent mechanical strength.

Description

Heat-insulating wall of environment-friendly building and preparation method thereof
Technical Field
The invention relates to a building curtain wall, in particular to a heat-insulating wall body of an environment-friendly building and a preparation method thereof.
Background
The building curtain wall is a building outer wall enclosure, does not bear load, is hung like a curtain, is also called as a curtain wall and is a light wall with decoration effect commonly used by modern large-scale and high-rise buildings. The building outer protective structure or decorative structure consists of a panel and a supporting structure system, has certain displacement capacity or certain deformation capacity relative to a main structure, and does not bear the function of the main structure (an outer wall frame type supporting system is also one type of a curtain wall system).
The architectural decoration curtain wall has been used in the building engineering before 150 years (in the middle of 19 th century), and due to the limitation of materials and processing technology at that time, the curtain wall cannot meet the requirements of absolute water tightness, air tightness, resistance to the invasion of various natural external forces (such as wind, earthquake and air temperature), thermal physical factors (such as heat radiation and condensation), sound insulation, fire prevention and the like, and cannot be well developed and popularized all the time.
Since the 20 th century and the 50 th century, due to the rapid development of building materials and processing techniques, various types of building materials have been successfully developed, such as the invention of various sealants and the appearance of other sound-insulating and fireproof filling materials, the index requirements of the periphery of a building on curtain walls are well met, and the building material gradually becomes a new decoration trend of the current exterior wall buildings.
The development trend of the current curtain wall is as follows: 1. the thickness of the natural stone is 25mm, and the thinnest of the novel material reaches 1 mm; 2. the method gradually moves from few varieties to various types of plates and richer colors, and at present, nearly 60 plates such as stone, ceramic plates, microcrystalline glass, high-pressure laminate plates, cement fiber boards, glass, inorganic glass fiber reinforced plastics, ceramic plates, ceramic protection plates, metal plates and the like are applied to the outer wall; 3. higher safety performance is required; 4. a more flexible, convenient and rapid construction technology is required; 5. the curtain wall is required to have higher waterproof performance, the service life of the curtain wall is prolonged, and the curtain wall is developed from a closed curtain wall to an open curtain wall; 6. environmental protection and energy conservation are required.
The important component determining the quality of the building curtain wall is a heat insulation layer, and the heat insulation material of the heat insulation layer mainly comprises an aluminum silicate heat insulation material, a phenolic foam material, inorganic heat insulation mortar, rubber powder polyphenyl particles, an XPS polystyrene extruded sheet, a rubber and plastic heat insulation material, glass wool, rock wool heat insulation felt and the like. The phenolic foam material has the characteristics of light weight, fire resistance, no combustion in open fire, no smoke, no toxicity, no dripping, wide application temperature range (-196 to +200 ℃), no shrinkage in a low-temperature environment and no embrittlement. Because the phenolic foam has high closed-cell rate, the phenolic foam has low heat conductivity coefficient, good heat insulation performance, water resistance and water vapor permeability, and is an ideal heat-insulating energy-saving material. The phenolic aldehyde has a benzene ring structure, so the size is stable, and the change rate is less than 1%; and the chemical components are stable, and the paint is corrosion-resistant and ageing-resistant, and particularly can resist the corrosion of organic solution, strong acid and weak base. In the foaming process of the production technology, freon is not used as a foaming agent, the foaming agent meets the international environmental protection standard, the molecular structure of the foaming agent contains hydrogen, oxygen and carbon elements, and overflowed gas is nontoxic and tasteless during pyrolysis, is harmless to human bodies and the environment, and meets the national environmental protection requirement. Therefore, the phenolic aldehyde composite board is the most ideal environment-friendly heat-insulating material with fire resistance, heat insulation, energy conservation and beautiful appearance.
As disclosed in patent publication No. CN 102649866A: the phenolic foam is prepared from foamable phenolic resin, a surfactant, modified calcium carbonate, a filler and a curing agent, wherein the modified calcium carbonate is selected from polyacrylate emulsion modified calcium carbonate, rosin modified calcium carbonate, solid paraffin modified calcium carbonate and thermoplastic phenolic resin modified calcium carbonate, the phenolic foam has no negative flame retardancy, and the pH value is 5-6%; although the phenolic foam has the characteristics of energy conservation, environmental protection and corrosion resistance, the phenolic foam material generally has the defect of low mechanical strength, so that the impact resistance of an external thermal insulation system of an external wall is poor, and the application of the phenolic foam material in the external thermal insulation system of the external wall is limited.
Disclosure of Invention
The invention aims to provide the heat-insulating wall body of the environment-friendly building and the preparation method thereof, the heat-insulating wall body of the environment-friendly building has excellent mechanical strength, so that the impact resistance of the wall body is improved, and meanwhile, the preparation method has the characteristic of simple and convenient operation.
In order to achieve the purpose, the invention provides a heat-insulating wall body of an environment-friendly building, which comprises a base wall body, a bonding layer, a heat-insulating layer, a plastering layer and a finishing layer which are sequentially overlapped from inside to outside, wherein the heat-insulating layer is a phenolic foam board, and the phenolic foam board is prepared by the following method:
1) first mixing aluminum silicate fibers, glass fibers, a silane coupling agent and a solvent to prepare a mixture A;
2) secondly, mixing the polyurethane prepolymer, the dispersing agent and the mixture A, and then adjusting the pH of the system to be alkaline to prepare a mixture B;
3) sequentially carrying out third mixing, foaming and curing on the phenolic resin, the surfactant, the filler, the curing agent, n-pentane, isopentane, the bicarbonate and the mixture B to prepare a phenolic foam board;
wherein the surfactant is selected from Tween-40 and/or Tween-80; the filler is at least one of montmorillonite, hydrotalcite, aluminum hydroxide, magnesium hydroxide and magnesium oxide; the curing agent is at least one of formic acid, oxalic acid, p-toluenesulfonic acid, xylene sulfonic acid, methanesulfonic acid and dodecylbenzene sulfonic acid; the surface layer consists of surface mortar and a glass fiber net; the finish coat is paint or plastering mortar.
The invention also provides a preparation method of the heat-insulating wall body of the environment-friendly building, which comprises the following steps:
1) adhering the phenolic foam board to the surface of the base layer wall through an adhesive;
2) fixing an anchor bolt between the phenolic foam plate and the base layer wall;
3) fixing the glass fiber net on the surface of the phenolic foam board through plastering mortar to form a plastering layer;
4) and coating paint or finishing mortar on the surface of the finishing layer to form the finishing layer.
In the technical scheme, the fiber materials (the aluminum silicate fibers and the glass fibers) are added into the phenolic resin, so that the fiber materials form a three-dimensional grid structure in the foaming process, the mechanical strength of the phenolic foam board is improved, and the impact resistance of the external thermal insulation system of the external wall can be improved on the basis.
Meanwhile, the fiber material is wrapped by the polyurethane prepolymer, and the fiber material is perfectly combined with other materials through the flexible long chain of the polyurethane prepolymer in the foaming process, so that the impact strength of the phenolic foam is further improved, the toughness is also modified, and the impact resistance of the external thermal insulation system of the external wall is further improved.
Furthermore, more importantly, the inventor discovers through creative work that the types of the foaming agent (n-pentane, isopentane, bicarbonate) and the curing agent can influence the length of the fiber material in the phenolic foam, and can also influence the cell diameter and cell density of the phenolic foam, so that the mechanical strength of the phenolic foam is determined, and the impact resistance of the external thermal insulation system of the external wall is further improved.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
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 specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is an operation schematic diagram of a preparation method of a thermal insulation wall of an environment-friendly building provided by the invention.
Detailed Description
The following describes in detail specific embodiments of the present invention. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
The endpoints of the ranges and any values disclosed herein are not limited to the precise range or value, and such ranges or values should be understood to encompass values close to those ranges or values. For ranges of values, between the endpoints of each of the ranges and the individual points, and between the individual points may be combined with each other to give one or more new ranges of values, and these ranges of values should be considered as specifically disclosed herein.
The invention provides a heat-insulating wall body of an environment-friendly building, which comprises a base wall body, a bonding layer, a heat-insulating layer, a plastering layer and a decorative layer which are sequentially overlapped from inside to outside, wherein the heat-insulating layer is a phenolic foam board prepared by the following method:
1) first mixing aluminum silicate fibers, glass fibers, a silane coupling agent and a solvent to prepare a mixture A;
2) secondly, mixing the polyurethane prepolymer, the dispersing agent and the mixture A, and then adjusting the pH of the system to be alkaline to prepare a mixture B;
3) sequentially carrying out third mixing, foaming and curing on the phenolic resin, the surfactant, the filler, the curing agent, n-pentane, isopentane, the bicarbonate and the mixture B to prepare a phenolic foam board;
wherein the surfactant is selected from Tween-40 and/or Tween-80; the filler is at least one of montmorillonite, hydrotalcite, aluminum hydroxide, magnesium hydroxide and magnesium oxide; the curing agent is at least one of formic acid, oxalic acid, p-toluenesulfonic acid, xylene sulfonic acid, methanesulfonic acid and dodecylbenzene sulfonic acid; the surface layer consists of surface mortar and a glass fiber net; the finish coat is paint or plastering mortar.
In the invention, the thickness of each of the bonding layer, the insulating layer, the plastering layer and the finishing layer can be selected in a wide range, but in order to further improve the strength of the building curtain wall, preferably, the thickness of the bonding layer is 5-10mm, the thickness of the insulating layer is 40-60mm, the thickness of the plastering layer is 10-30mm, and the thickness of the finishing layer is 5-12 mm.
In step 1) of the present invention, the amount of each material may be selected within a wide range, but in order to further improve the strength of the building curtain wall, it is preferable that the weight ratio of the alumina silicate fiber, the glass fiber, the silane coupling agent and the solvent in step 1) is 10: 1.5-2.5: 0.1-0.2: 8-10.
In step 1) of the present invention, the conditions of the first mixing may be selected within a wide range, but in order to further improve the strength of the building curtain wall, it is preferable that the first mixing at least satisfies the following conditions: the mixing temperature is 25-35 ℃, and the mixing time is 1-1.5 h.
In step 1) of the present invention, the kind of the silane coupling agent may be selected within a wide range, but in order to further improve the strength of the building curtain wall, it is preferable that the silane coupling agent is selected from at least one of silane coupling agent a151 (vinyltriethoxysilane), silane coupling agent a171 (vinyltrimethoxysilane) and silane coupling agent a172 (vinyltris (. beta. -methoxyethoxy) silane).
In step 1) of the present invention, the kind of the solvent may be selected within a wide range, but in order to further improve the strength of the building curtain wall, it is preferable that the solvent is selected from at least one of ethanol, propanol, isopropanol and ethyl acetate.
In step 2) of the present invention, the amount of each component may be selected within a wide range, but in order to further improve the strength of the building curtain wall, it is preferable that the weight ratio of the polyurethane prepolymer, the dispersant and the mixture a in step 2) is 10: 0.2-0.3: 8-12.
In step 2) of the present invention, the kind of the dispersant may be selected within a wide range, but in order to further improve the strength of the building curtain wall, it is preferable that the dispersant is selected from at least one of stearic acid, paraffin wax, stearic acid monoglyceride and tristearin.
In step 2) of the present invention, the conditions of the second mixing may be selected within a wide range, but in order to further improve the strength of the building curtain wall, it is preferable that the second mixing at least satisfies the following conditions: the mixing temperature is 40-60 deg.C, and the mixing time is 0.5-1 h.
In step 2) of the present invention, the pH of the adjusted system can be selected within a wide range, but in order to further improve the strength of the building curtain wall, it is preferable that the pH of the system is adjusted to 8 to 9.
In step 3) of the present invention, the amount of each component may be selected within a wide range, but in order to further improve the strength of the building curtain wall, it is preferable that in step 3), the weight ratio of the phenolic resin, the surfactant, the filler, the curing agent, n-pentane, isopentane, the bicarbonate and the mixture B is 100: 3-5: 20-30: 5-9: 0.5-1.5: 0.5-1.5: 0.4-0.7: 10-16; preferably, the weight ratio of the phenolic resin, the surfactant, the filler, the curing agent, the n-pentane, the isopentane, the bicarbonate and the mixture B is 100: 3-5: 20-30: 7-8: 1-1.2: 1-1.2: 0.5-0.6: 10-16; the inventor also finds out through creative work that the dosage of the foaming agent and the curing agent can also influence the strength of the phenolic foam board.
In step 3) of the present invention, in order to further improve the strength of the building curtain wall, preferably, the curing agent is selected from at least one of p-toluenesulfonic acid, xylenesulfonic acid and dodecylbenzenesulfonic acid.
In step 3) of the present invention, the conditions of the third mixing may be selected within a wide range, but in order to further improve the strength of the building curtain wall, preferably, in step 3), the third mixing preferably satisfies at least the following conditions: the mixing temperature is 15-30 ℃, and the mixing time is 0.5-1 h.
In step 3) of the present invention, the temperature of foaming can be selected within a wide range, but in order to further improve the strength of the building curtain wall, it is preferable that the temperature of foaming is 50-60 ℃.
In step 3) of the present invention, the length of the fiber material can be selected in a wide range, but in order to further improve the strength of the building curtain wall, preferably, the average length of the aluminum silicate fiber is 550-; more preferably, the average length of the aluminum silicate fibers is 580-.
The polyurethane prepolymer may be a conventional commercially available product or may be obtained by a self-assembly method, but in order to further improve the activity of the polyurethane prepolymer, it is preferable to prepare the polyurethane prepolymer by: the toluene diisocynate TDI and the polyethylene glycol PEG are reacted to obtain the product.
The invention also provides a preparation method of the heat-insulating wall body of the environment-friendly building, which comprises the following steps:
1) adhering the phenolic foam board to the surface of the base layer wall through an adhesive;
2) fixing an anchor bolt between the phenolic foam plate and the base layer wall;
3) fixing the glass fiber net on the surface of the phenolic foam board through plastering mortar to form a plastering layer;
4) and coating paint or finishing mortar on the surface of the finishing layer to form the finishing layer.
In the above preparation method, the amount of the adhesive can be selected within a wide range, but in order to further improve the adhesive strength of the phenolic foam board, it is preferable that the effective adhesive area of the phenolic foam board and the substrate wall is not less than 40% of the surface area of the phenolic foam board.
In the above-described production method, the specific kind of the adhesive may be selected within a wide range, but in order to further improve the adhesive strength of the phenolic foam board, it is preferable that the adhesive is a two-component polyurethane adhesive.
In the above-described production method, the thickness of the glass fiber web can be selected within a wide range, but in order to further improve the adhesive strength of the phenolic foam board, it is preferable that the thickness of the glass fiber web is 0.08 to 0.2 mm.
The present invention will be described in detail below by way of examples. In the following examples, the adhesive is commercially available from Zibodei polyurethane Co., Ltd, the aluminum silicate fiber is commercially available from mineral processing factories in spring county, the glass fiber is commercially available from mineral processing factories in Shuolong county, the plastering mortar is commercially available from building materials Co-fertilizer New Key Wei Co., Ltd, and other chemical reagents are all commercially available. The thickness of the glass fiber net is 0.15 mm.
The performance of the phenolic foam board is detected by the following method: the compression performance is tested according to GB/T8813-2008, and the impact strength is tested according to GB/T1043-1993; the impact resistance of the external thermal insulation system of the external wall is tested according to JGJ144 appendix A.4.
The polyurethane prepolymer was obtained as described in the following method: a polyurethane prepolymer was obtained by mixing toluene diisocyanate TDI (70 parts by weight) and PEG-200 (20 parts by weight) in tetrahydrofuran (150 parts by weight), heating to 60 ℃ and stirring for 6 hours, and then removing the solvent under reduced pressure.
1 part by weight in each example corresponds to a weight of 5 kg.
Example 1
1) Aluminum silicate fibers (average length 550 μm), glass fibers (average length 420 μm), a silane coupling agent (silane coupling agent a151) and a solvent (ethanol) were mixed in the following ratio of 10: 2: 0.15: 9 (mixing temperature 30 ℃ and mixing time 1.2h) to obtain a mixture A;
2) the polyurethane prepolymer, dispersant (stearic acid) and said mixture a were mixed according to a 10: 0.25: 10 (mixing temperature 50 ℃ and mixing time 0.8h), and then adjusting the pH of the system to 8 to obtain a mixture B;
3) mixing phenolic resin, a surfactant (Tween-40), a filler (montmorillonite), a curing agent (formic acid), n-pentane, isopentane, a bicarbonate and the mixture B according to the weight ratio of 100: 4: 25: 5: 0.5: 0.5: 0.4: 13 (mixing temperature of 20 ℃ C., mixing time of 0.8h), foaming (temperature of 55 ℃ C.) and curing to obtain the phenolic foam board A (thickness of 50 mm).
Example 2
1) Aluminum silicate fibers (average length of 600 μm), glass fibers (average length of 480 μm), a silane coupling agent (silane coupling agent a171), and a solvent (propanol) were mixed in a ratio of 10: 1.5: 0.1: 8 (mixing temperature 25 ℃ C., mixing time 1.5h) to obtain a mixture A;
2) the polyurethane prepolymer, dispersant (paraffin wax) and the mixture a were mixed in a ratio of 10: 0.2: 8 (the mixing temperature is 40 ℃ and the mixing time is 1h), and then the pH of the system is adjusted to 9 to prepare a mixture B;
3) mixing phenolic resin, surfactant (Tween-80), filler (hydrotalcite), curing agent (oxalic acid), n-pentane, isopentane, bicarbonate and the mixture B according to the proportion of 100: 3: 20: 9: 1.5: 1.5: 0.7: 16 (mixing temperature 30 ℃ C., mixing time 0.5h), foaming (temperature 60 ℃ C.), and curing to obtain the phenolic foam board B (thickness 40 mm).
Example 3
1) Aluminum silicate fibers (average length 550 μm), glass fibers (average length 430 μm), a silane coupling agent (silane coupling agent a172), and a solvent (ethyl acetate) were mixed in the following ratio of 10: 2.5: 0.2: 10 (mixing temperature 35 ℃ and mixing time 1h) to obtain a mixture A;
2) the polyurethane prepolymer, dispersant (glyceryl tristearate) and the mixture a were mixed in a ratio of 10: 0.3: 12 (mixing temperature 60 ℃ and mixing time 0.5h), and then adjusting the pH of the system to 9 to obtain a mixture B;
3) mixing phenolic resin, surfactant (Tween-80), filler (magnesium oxide), curing agent (formic acid), n-pentane, isopentane, bicarbonate and the mixture B according to the ratio of 100: 5: 30: 9: 1.5: 1.5: 0.7: 16 (mixing temperature 30 ℃ C., mixing time 0.5h), foaming (temperature 60 ℃ C.), and curing to obtain the phenolic foam board C (thickness 60 mm).
Example 4
The procedure is as in example 1, except that the weight ratio of phenolic resin, surfactant, filler, curing agent, n-pentane, isopentane, bicarbonate and said mixture B is 100: 4: 25: 7: 1: 1: 0.5: 13.
example 5
The procedure is as in example 1, except that the weight ratio of phenolic resin, surfactant, filler, curing agent, n-pentane, isopentane, bicarbonate and said mixture B is 100: 4: 25: 8: 1.2: 1.2: 0.6: 13.
example 6
The procedure is as in example 1, except that the average length of the aluminium silicate fibres is 580. mu.m, and the average length of the glass fibres is 460. mu.m.
Example 7
The procedure is as in example 1, except that the average length of the aluminium silicate fibres is 590 μm and the average length of the glass fibres is 450. mu.m.
Example 8
The procedure is as in example 1, except that formic acid is exchanged for xylenesulfonic acid.
Example 9
The procedure is as in example 1, except that formic acid is changed to dodecylbenzenesulfonic acid.
Comparative example 1
The procedure is as in example 1, except that the petroleum ether is transposed for n-pentane, isopentane, bicarbonate in the same total weight.
Comparative example 2
The procedure is as in example 1, except that n-pentane, isopentane, bicarbonate are transposed to n-pentane, isopentane in the same total weight ratio (1: 1).
Comparative example 3
The procedure is as in example 1, except that n-pentane, isopentane and bicarbonate are transposed to give n-pentane and bicarbonate in the same total weight ratio (1: 1).
Comparative example 4
The procedure is as in example 1, except that n-pentane, isopentane and bicarbonate are transposed to obtain isopentane and bicarbonate in the same total weight ratio (1: 1).
Comparative example 5
The procedure is as in example 1, except that no polyurethane prepolymer is used in step 2) and the other conditions are unchanged.
Comparative example 6
The procedure is as in example 1, except that no aluminium silicate fibres are used in step 2) and the total weight of the fibres is unchanged, the other conditions being unchanged.
Comparative example 7
The procedure is as in example 1, except that no glass fibers are used in step 2) and the total weight of the fibers is unchanged, other conditions being unchanged.
Comparative example 8
The procedure is as in example 1, except that no aluminium silicate fibres and no glass fibres are used in step 2) and the other conditions are unchanged.
Application example 1
1) Adhering the phenolic foam board to the surface of the base layer wall through an adhesive to form an adhesive layer (the thickness is 8 mm);
2) fixing anchor bolts between the phenolic foam boards (the phenolic foam boards in the example 7 and the base layer wall respectively);
3) fixing the glass fiber net on the surface of the phenolic foam board through plastering mortar to form a plastering layer (the thickness is 20 mm);
4) and coating the surface mortar on the surface of the plastering layer to form a finishing layer (the thickness is 8mm) so as to obtain an external thermal insulation system of the external wall, namely the building curtain wall.
Application example 2
1) Adhering the phenolic foam board to the surface of the base layer wall through an adhesive to form an adhesive layer (the thickness is 5 mm);
2) fixing anchor bolts between the phenolic foam board (the phenolic foam board in the example 7) and the base layer wall;
3) fixing the glass fiber net on the surface of the phenolic foam board through plastering mortar to form a plastering layer (the thickness is 10 mm);
4) and coating the surface mortar on the surface of the plastering layer to form a finishing layer (the thickness is 5mm) so as to obtain an external thermal insulation system of the external wall, namely the building curtain wall.
Application example 3
1) Adhering the phenolic foam board to the surface of the base layer wall through an adhesive to form an adhesive layer (the thickness is 10 mm);
2) fixing anchor bolts between the phenolic foam board (the phenolic foam board in the example 7) and the base layer wall;
3) fixing the glass fiber net on the surface of the phenolic foam board through plastering mortar to form a plastering layer (the thickness is 30 mm);
4) and coating the surface mortar on the surface of the plastering layer to form a finishing layer (the thickness is 10mm) so as to obtain an external thermal insulation system of the external wall, namely the building curtain wall.
Detection example 1
The phenolic foam boards in the above examples were subjected to strength tests, and the impact resistance (10J-level test) of the building curtain wall in application example 1 was tested, and the test results are shown in table 1.
TABLE 1
Figure BDA0002917706260000141
The application examples 2-3 are detected by the same method, and the detection result shows that the impact resistance is also qualified.
In the above table, in comparison with example 1, it can be seen from examples 4 to 5 that: the use amounts of the curing agent and the foaming agent can affect the strength of the phenolic foam board; from examples 6 to 7, it can be seen that: the length of the fibers can affect the strength of the phenolic foam board; from examples 8 to 9, it can be seen that: the type of curing agent can affect the phenolic foam board strength.
In the table above, in comparison with example 1, it can be seen from comparative examples 1 to 4 that: the type of foaming agent can affect the strength of the phenolic foam board; from comparative example 5 it can be seen that: polyurethane prepolymers can affect phenolic foam board strength; from comparative examples 6 to 8 it can be seen that: the compatibility of the aluminum silicate fibers and the glass fibers can influence the strength of the phenolic foam board. Although the results of the impact resistance tests of comparative examples 1 to 7 also showed a satisfactory state, the impact resistance of the exterior wall insulation systems of comparative examples 1 to 7 was inevitably poor due to the poor strength of the foam sheet itself.
The preferred embodiments of the present invention have been described in detail, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.

Claims (10)

1. The utility model provides a thermal insulation wall of environmental protection building which characterized in that, thermal insulation wall of environmental protection building includes basic unit's wall, tie coat, heat preservation, rendering coat and finish coat that superpose from inside to outside in proper order, the heat preservation is the phenolic foam board, the phenolic foam board is prepared by following method:
1) first mixing aluminum silicate fibers, glass fibers, a silane coupling agent and a solvent to prepare a mixture A;
2) secondly, mixing the polyurethane prepolymer, a dispersant and the mixture A, and then adjusting the pH of the system to be alkaline to prepare a mixture B;
3) sequentially carrying out third mixing, foaming and curing on phenolic resin, a surfactant, a filler, a curing agent, n-pentane, isopentane, a bicarbonate and the mixture B to prepare the phenolic foam board;
wherein the surfactant is selected from tween-40 and/or tween-80; the filler is at least one of montmorillonite, hydrotalcite, aluminum hydroxide, magnesium hydroxide and magnesium oxide; the curing agent is selected from at least one of formic acid, oxalic acid, p-toluenesulfonic acid, xylene sulfonic acid, methanesulfonic acid and dodecylbenzene sulfonic acid; the surface layer consists of surface mortar and a glass fiber net; the finish coat is paint or plastering mortar.
2. The heat-insulating wall body of the environment-friendly building as claimed in claim 1, wherein the bonding layer is 5-10mm thick, the heat-insulating layer is 40-60mm thick, the finishing layer is 10-30mm thick, and the finishing layer is 5-12mm thick.
3. The thermal insulation wall of an environmentally friendly building as claimed in claim 1, wherein in the step 1), the weight ratio of the alumina silicate fiber, the glass fiber, the silane coupling agent and the solvent is 10: 1.5-2.5: 0.1-0.2: 8-10;
preferably, the first mixing satisfies at least the following condition: the mixing temperature is 25-35 ℃, and the mixing time is 1-1.5 h;
preferably, the silane coupling agent is selected from at least one of silane coupling agent a151 (vinyltriethoxysilane), silane coupling agent a171 (vinyltrimethoxysilane), and silane coupling agent a172 (vinyltris (β -methoxyethoxy) silane);
preferably, the solvent is selected from at least one of ethanol, propanol, isopropanol and ethyl acetate.
4. The thermal insulation wall of the environment-friendly building as claimed in claim 1, wherein in the step 2), the weight ratio of the polyurethane prepolymer, the dispersant and the mixture A is 10: 0.2-0.3: 8-12;
preferably, the dispersant is selected from at least one of stearic acid, paraffin wax, glyceryl monostearate and glyceryl tristearate;
preferably, the second mixing satisfies at least the following condition: the mixing temperature is 40-60 ℃, and the mixing time is 0.5-1 h;
preferably, the pH of the system is adjusted to 8-9.
5. The thermal insulation wall of the environment-friendly building as claimed in claim 1, wherein in the step 3), the weight ratio of the phenolic resin, the surfactant, the filler, the curing agent, the n-pentane, the isopentane, the bicarbonate and the mixture B is 100: 3-5: 20-30: 5-9: 0.5-1.5: 0.5-1.5: 0.4-0.7: 10-16;
preferably, the weight ratio of the phenolic resin, the surfactant, the filler, the curing agent, the n-pentane, the isopentane, the bicarbonate and the mixture B is 100: 3-5: 20-30: 7-8: 1-1.2: 1-1.2: 0.5-0.6: 10-16;
preferably, the curing agent is selected from at least one of p-toluenesulfonic acid, xylenesulfonic acid, and dodecylbenzenesulfonic acid.
6. The thermal insulation wall of an environmentally friendly building according to claim 1, wherein in step 3), preferably, the third mixing at least satisfies the following condition: the mixing temperature is 15-30 ℃, and the mixing time is 0.5-1 h;
preferably, the foaming temperature is 50-60 ℃.
7. The heat-insulating wall body of the environment-friendly building as claimed in claim 1, wherein the average length of the alumina silicate fiber is 550-600 μm, and the average length of the glass fiber is 420-480 μm;
preferably, the average length of the aluminum silicate fibers is 580-.
8. The preparation method of the heat-insulating wall body of the environment-friendly building is characterized by comprising the following steps:
1) adhering the phenolic foam board to the surface of the base layer wall through an adhesive;
2) fixing an anchor bolt between the phenolic foam plate and the base layer wall;
3) fixing the glass fiber net on the surface of the phenolic foam board through plastering mortar to form a plastering layer;
4) and coating paint or finishing mortar on the surface of the finishing layer to form a finishing layer.
9. The method of claim 8, wherein the effective adhesive area of the phenolic foam board and the substrate wall is not less than 40% of the surface area of the phenolic foam board.
10. The method of claim 8, wherein the adhesive is a two-part polyurethane adhesive.
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Publication number Priority date Publication date Assignee Title
CN113818610A (en) * 2021-10-26 2021-12-21 深圳市博大建设集团有限公司 Super high-rise full-special-shaped unit type curtain wall design structure and construction method

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JPH11280988A (en) * 1998-03-30 1999-10-15 Asahi Chem Ind Co Ltd Heat insulating panel
CN201330464Y (en) * 2008-12-02 2009-10-21 北京六建集团公司 Compound metlbond fireproofing heat-preservation plate outer wall outer heat-preservation system
CN201981726U (en) * 2011-03-04 2011-09-21 沈石山 External insulation board of thin-plastered outer wall for phenolic aldehyde plate
CN102877561A (en) * 2012-10-23 2013-01-16 昌吉康蔓化工建材有限公司 Fireproof phenolic foam plate for outer heat-insulation system of exterior wall and process for manufacturing fireproof phenolic foam plate

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11280988A (en) * 1998-03-30 1999-10-15 Asahi Chem Ind Co Ltd Heat insulating panel
CN201330464Y (en) * 2008-12-02 2009-10-21 北京六建集团公司 Compound metlbond fireproofing heat-preservation plate outer wall outer heat-preservation system
CN201981726U (en) * 2011-03-04 2011-09-21 沈石山 External insulation board of thin-plastered outer wall for phenolic aldehyde plate
CN102877561A (en) * 2012-10-23 2013-01-16 昌吉康蔓化工建材有限公司 Fireproof phenolic foam plate for outer heat-insulation system of exterior wall and process for manufacturing fireproof phenolic foam plate

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113818610A (en) * 2021-10-26 2021-12-21 深圳市博大建设集团有限公司 Super high-rise full-special-shaped unit type curtain wall design structure and construction method

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