CN112746752A - Multilayer composite heat-preservation, heat-insulation and fireproof construction process for outer wall - Google Patents
Multilayer composite heat-preservation, heat-insulation and fireproof construction process for outer wall Download PDFInfo
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- CN112746752A CN112746752A CN202011532911.0A CN202011532911A CN112746752A CN 112746752 A CN112746752 A CN 112746752A CN 202011532911 A CN202011532911 A CN 202011532911A CN 112746752 A CN112746752 A CN 112746752A
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- 238000010276 construction Methods 0.000 title claims abstract description 56
- 238000009413 insulation Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000008569 process Effects 0.000 title claims abstract description 21
- 238000004321 preservation Methods 0.000 title claims abstract description 16
- 239000002131 composite material Substances 0.000 title claims abstract description 12
- 239000011248 coating agent Substances 0.000 claims abstract description 26
- 238000000576 coating method Methods 0.000 claims abstract description 26
- 239000003292 glue Substances 0.000 claims abstract description 16
- 238000010422 painting Methods 0.000 claims abstract description 13
- 230000000694 effects Effects 0.000 claims abstract description 10
- 238000004140 cleaning Methods 0.000 claims abstract description 3
- 239000000843 powder Substances 0.000 claims description 19
- 238000004026 adhesive bonding Methods 0.000 claims description 13
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 8
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 8
- 239000003063 flame retardant Substances 0.000 claims description 8
- 239000006261 foam material Substances 0.000 claims description 8
- 229920006327 polystyrene foam Polymers 0.000 claims description 8
- 239000004568 cement Substances 0.000 claims description 7
- 239000004816 latex Substances 0.000 claims description 7
- 229920000126 latex Polymers 0.000 claims description 7
- 230000032683 aging Effects 0.000 claims description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 4
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 4
- 239000002639 bone cement Substances 0.000 claims description 4
- 229910052744 lithium Inorganic materials 0.000 claims description 4
- 239000011496 polyurethane foam Substances 0.000 claims description 4
- 239000002893 slag Substances 0.000 claims description 4
- 239000004408 titanium dioxide Substances 0.000 claims description 4
- 229920000538 Poly[(phenyl isocyanate)-co-formaldehyde] Polymers 0.000 claims description 3
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 3
- 239000004793 Polystyrene Substances 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 229920005610 lignin Polymers 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims description 3
- 229920000570 polyether Polymers 0.000 claims description 3
- 229920005862 polyol Polymers 0.000 claims description 3
- 150000003077 polyols Chemical class 0.000 claims description 3
- 229920001451 polypropylene glycol Polymers 0.000 claims description 3
- 229920002223 polystyrene Polymers 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 230000002708 enhancing effect Effects 0.000 claims description 2
- 229920001296 polysiloxane Polymers 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 230000004048 modification Effects 0.000 abstract description 8
- 238000012986 modification Methods 0.000 abstract description 8
- 239000000428 dust Substances 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000011819 refractory material Substances 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 3
- 239000004567 concrete Substances 0.000 description 5
- 229910021389 graphene Inorganic materials 0.000 description 5
- -1 graphene modified sodium silicate Chemical class 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 239000011185 multilayer composite material Substances 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
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- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- WHGYBXFWUBPSRW-FEYSZYNQSA-N β-dextrin Chemical compound OC[C@H]([C@H]([C@@H]([C@H]1O)O)O[C@H]2O[C@@H]([C@@H](O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O3)C(O)[C@H]2O)CO)O[C@@H]1O[C@H]1[C@H](O)[C@@H](O)[C@@H]3O[C@@H]1CO WHGYBXFWUBPSRW-FEYSZYNQSA-N 0.000 description 2
- 230000003712 anti-aging effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000013464 silicone adhesive Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
- C09D1/06—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances cement
- C09D1/08—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances cement with organic additives
-
- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
-
- 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
-
- 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
- E04B1/762—Exterior insulation of exterior walls
- E04B1/7625—Details of the adhesive connection of the insulation to the wall
-
- 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
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/94—Protection against other undesired influences or dangers against fire
- E04B1/941—Building elements specially adapted therefor
- E04B1/942—Building elements specially adapted therefor slab-shaped
Abstract
The invention relates to an external wall multilayer composite heat-preservation heat-insulation fireproof construction process, which comprises the following steps: cleaning a painting layer on the inner side surface of an outer wall to be modified, coating the painting layer by adopting special outer wall glue, sticking the glued wall surface by adopting a special heat-insulating plate to form a complete heat-insulating layer, sticking a gauze on the heat-insulating plate by adopting glue, coating the wall surface by adopting special outer wall coating, and finishing the modification of the outer wall after finishing the coating. The invention has the advantages that: the construction method has the advantages that the outer wall is not damaged, the construction pattern of the reason of the outer wall is kept, a large amount of construction waste is not generated, dust pollution to construction units is reduced, the construction plates are made of refractory materials, fire hazard is avoided, fire operation is not needed during construction, fire safety hazard is avoided, the construction is combined construction, the construction period is short, normal production operation of the units is not affected, and the heat preservation and insulation effects are greatly improved.
Description
Technical Field
The invention relates to the field of building construction, in particular to an external wall multilayer composite heat-preservation heat-insulation fireproof construction process.
Background
Wall materials generally have a plurality of tiny holes, or penetrating gaps are generated due to the fact that the wall materials are not tightly installed or the materials shrink. Due to the holes and the gaps, cold air permeates into the room from the windward wall surface by the pressure of outdoor wind in winter, temperature difference exists between the indoor and the outdoor, and indoor hot air permeates into the outer wall from the inner wall, so that air permeation of the outer wall occurs by wind pressure and hot pressing. The heat loss thus occurring is detrimental to the insulation of the wall. In order to prevent air permeation of the outer wall, wall materials with high compactness are generally adopted, and the treatment methods such as plastering layers are added inside and outside the wall, close joint treatment among reinforcing members and the like are adopted. In hot areas, the middle and lower reaches of Yangtze river and transition areas thereof, the solar radiation is strong in summer, and outdoor heat is transmitted into the room through the outer wall, so that the indoor temperature is raised, and the overheating phenomenon is generated. In addition, the transition area is hot in summer and very cold in winter, and centralized heating equipment is not arranged, so that the work and the life of people are influenced. In order to improve the living environment of the house and improve the living quality and the indoor comfort level, the outer wall should also have certain heat insulation performance and heat preservation measures.
However, the exterior walls of some houses can not meet the requirements of heat insulation and heat preservation at present, especially some old houses with long construction time, when the exterior walls are constructed at first, the old houses are mostly formed by piling bricks or building blocks and are reinforced by concrete, so that exterior wall main bodies are formed, concrete is poured on the inner side and the outer side of the exterior wall main bodies to form concrete connecting layers, then decoration plates or ceramic tiles are paved on the concrete connecting layers on the inner sides of the exterior wall main bodies to form inner wall surfaces, and decoration plates or ceramic tiles are paved on the concrete connecting layers on the outer sides of the exterior wall main bodies to form outer wall surfaces, so that complete exterior wall structures are formed.
The outer wall structure cannot meet the requirements of heat insulation and heat preservation, so that the outer wall structure needs to be modified to reduce the heat loss of the outer wall body and provide a good living environment for residents in old houses.
At present, to the mode of laying the heated board of the major adoption of external wall insulation, it has heated board, net cloth and mortar layer to bond in proper order on the external wall surface, at the in-process of laying the heated board, is a plurality of cubic with the heated board according to the outer wall size cutting, arranges the heated board after a plurality of cutting in proper order and bonds on the outer wall to use expansion bolts and plastic pad to anchor seam all around the heated board and the heated board in the middle of, guarantee the joint strength between heated board and the outer wall. However, in the construction process, the two adjacent insulation boards are not easy to position, the compression effect of the joint is poor only through the expansion bolts and the plastic gaskets, the gap of the joint of the two insulation boards is large, and the insulation quality is affected.
Disclosure of Invention
The invention aims to solve the technical problem of providing an external wall multilayer composite heat-preservation heat-insulation fireproof construction process with good heat-preservation effect and convenient construction.
In order to solve the technical problems, the technical scheme of the invention is as follows: the multilayer composite heat-preservation, heat-insulation and fire-proof construction process for the outer wall has the innovation points that: comprises the following steps
S1 external wall gluing: firstly, cleaning a painting layer on the inner side surface of an outer wall to be modified to remove residues and scraps on the surface of the painting layer and ensure the tidiness of the surface of the painting layer, then coating the painting layer by adopting special outer wall glue, further improving the waterproof performance of the coated outer wall, enhancing the heat insulation effect and reinforcing the original painting layer of the outer wall;
s2 construction of the heat insulation board: the wall surface after the glue is spread is pasted by adopting a heat-insulating plate, the heat-insulating plate is fixed on the gluing layer in a central line glue dispensing mode and is pressed, so that the heat-insulating plate is well fixed with the gluing layer until the whole plane of the gluing layer is covered with the heat-insulating plate, and the heat-insulating plate is subjected to edge sealing treatment by utilizing silicone glue, so that a complete heat-insulating layer is formed, the fire resistance grade of the heat-insulating plate is A1 grade, the plate is not aged, the wall surface is smooth and attractive after construction, and the heat-insulating effect is finally achieved;
s3 construction of a protective net: the gauze is adhered to the heat-insulation board by glue, so that the purposes of ageing resistance and tensile crack resistance of the wall surface are achieved, and the leveling is carried out by adopting outer wall putty after construction to ensure that the wall surface is smooth;
s4 coating of exterior wall paint: the outer wall coating is used for coating the wall surface, is waterproof and mildew-proof, and is used for finishing the reconstruction of the outer wall after the coating is finished.
As a more specific embodiment of the present invention, in the step S1, the components of the exterior wall glue in parts by mass: 32-40 parts of cement, 19-25 parts of polystyrene, 14-17 parts of polyether polyol, 23-24 parts of polymethylene polyphenyl isocyanate, 18-19 parts of polypropylene oxide, 5-8 parts of redispersible latex powder and 2-4 parts of lignin fiber.
As a more specific embodiment of the present invention, in step S2, the insulation board is a multi-layer composite material of a flame retardant polystyrene foam material and a polyurethane foam layer, and the surface near the exterior wall is the flame retardant polystyrene foam material.
In a more specific embodiment of the invention, in step S4, the exterior wall coating material comprises 52 to 55 parts of cement, 10 to 12 parts of shell powder, 5 to 8 parts of redispersible latex powder, 3 to 4 parts of titanium dioxide, 5 to 6 parts of bone glue powder and 7 to 10 parts of lithium slag powder.
The invention has the advantages that: compared with the traditional outer wall transformation process, the construction process provided by the invention does not damage the outer wall, keeps the construction pattern of the reason of the outer wall, does not generate a large amount of construction waste, reduces dust pollution to construction units, has no fire hazard because the construction plate is made of refractory materials, does not need fire operation during construction, does not have fire safety hazard, is combined construction, has a short construction period, does not influence normal production operation of units, has a low outer wall heat conduction coefficient after construction, greatly improves the heat insulation effect, has good ageing resistance, cracking resistance and other properties on the outer wall surface, and is particularly suitable for energy-saving transformation of old buildings.
Detailed Description
The following examples are presented to enable one of ordinary skill in the art to more fully understand the present invention and are not intended to limit the scope of the embodiments described herein.
Example one
The construction process of the invention is realized by the following steps:
first step outer wall gluing: firstly, clear up the whitewash layer of the medial surface of the outer wall that needs to reform transform to get rid of residue, the sweeps on the surface of whitewash layer, ensure the clean and tidy on whitewash layer surface, then adopt outer wall glue to carry out the application to whitewash layer, outer wall glue's component is according to the part by mass: 32-40 parts of cement, 19-25 parts of polystyrene, 14-17 parts of polyether polyol, 23-24 parts of polymethylene polyphenyl isocyanate, 18-19 parts of polypropylene oxide, 5-8 parts of redispersible latex powder and 2-4 parts of lignin fiber. Before actual painting, the total amount of the components of the exterior wall adhesive and water are mixed according to the ratio of 1: 0.28 was mixed and formulated.
And (2) second-step construction of the heat-insulating board: the wall surface after gluing is pasted by a special heat insulation board, the heat insulation board is a flame-retardant polystyrene foam material and polyurethane foam layer multilayer composite material, the surface close to the outer wall is the flame-retardant polystyrene foam material, the thickness heat insulation board is the flame-retardant polystyrene foam material and polyurethane foam layer multilayer composite material, and the surface close to the outer wall is the flame-retardant polystyrene foam material. In this embodiment, the thickness of the thermal insulation board is 4 cm.
Make it fix on the gluing layer through the mode that the central line was glued with the heated board to the pressfitting makes the heated board fine fixed with the gluing layer, has all covered the heated board until on the whole plane on gluing layer, recycles the silicone adhesive and carries out the banding to the heated board and handle, thereby forms complete heat preservation, and this insulation board fire resistance is A1 level, and panel is not ageing, and the wall is level and smooth pleasing to the eye after the construction, and it is thermal-insulated to keep warm to reach final effect.
Thirdly, construction of a protective net: the gauze is adhered to the heat-insulation board by glue, so that the purposes of ageing resistance and tensile crack resistance of the wall surface are achieved, and the leveling of the wall surface is ensured by adopting outer wall putty after construction.
Fourthly, coating the exterior wall paint: the wall surface is coated by adopting a special external wall coating, wherein the external wall coating comprises 52-55 parts of cement, 10-12 parts of shell powder, 5-8 parts of redispersible latex powder, 3-4 parts of titanium dioxide, 5-6 parts of bone glue powder and 7-10 parts of lithium slag powder. Preferably, the exterior wall coating further comprises 3-4 parts of a mixture of graphene modified sodium silicate and beta-dextrin, and the graphene modified sodium silicate accounts for more than 60% of the mixture.
The exterior wall coating is crack-resistant, waterproof and mildew-resistant, and the modification of the exterior wall is completed after the coating is completed.
Table 1 is a comparison table of the overall performance of the outer wall modified by the modification process of the embodiment and the outer wall modified by the conventional modification process
TABLE 1
As can be seen from Table 1, after the outer wall is modified by the modification process provided by the invention, various properties of the outer wall are improved.
Example two
The steps of the construction process for the multilayer composite heat-preservation, heat-insulation and fire-prevention construction of the outer wall are completely the same as those of the first embodiment, and the difference is that:
the coating of the exterior wall coating comprises 52-55 parts of cement, 10-12 parts of shell powder, 5-8 parts of redispersible latex powder, 3-4 parts of titanium dioxide, 5-6 parts of bone glue powder and 7-10 parts of lithium slag powder. The preparation method further comprises 3-4 parts of a mixture of graphene modified sodium silicate and beta-dextrin, wherein the graphene modified sodium silicate is recommended to account for more than 60% of the mixture, and the graphene modified sodium silicate is selected to account for 65% of the mixture in the embodiment.
Table 2 shows the exterior wall coating (test area 240 m) after the modification process of the present invention2)
By adopting the exterior wall coating of the second embodiment of the invention, the crack resistance is more excellent.
Compared with the traditional outer wall modification process, the construction process provided by the invention has the advantages that the outer wall is not damaged, the construction pattern of the reason of the outer wall is kept, a large amount of construction waste is not generated, the dust pollution to construction units is reduced, the construction plate is made of a refractory material, the fire hazard is avoided, the fire operation is not needed during construction, the fire safety hazard is avoided, the construction is combined construction, the construction period is short, the normal production operation of the units is not influenced, the heat conduction coefficient of the outer wall is basically 0 after construction, the heat insulation effect is improved by 100%, and the outer wall surface is anti-aging and anti-cracking.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. The multilayer composite heat-insulating fireproof construction process for the outer wall is characterized in that: the method comprises the following steps:
s1 external wall gluing: firstly, cleaning a painting layer on the inner side surface of an outer wall to be modified to remove residues and scraps on the surface of the painting layer and ensure the tidiness of the surface of the painting layer, then coating the painting layer by adopting special outer wall glue, further improving the waterproof performance of the coated outer wall, enhancing the heat insulation effect and reinforcing the original painting layer of the outer wall;
s2 construction of the heat insulation board: the wall surface after the glue is spread is pasted by adopting a heat-insulating plate, the heat-insulating plate is fixed on the gluing layer in a central line glue dispensing mode and is pressed, so that the heat-insulating plate is well fixed with the gluing layer until the whole plane of the gluing layer is covered with the heat-insulating plate, and the heat-insulating plate is subjected to edge sealing treatment by utilizing silicone glue, so that a complete heat-insulating layer is formed, the fire resistance grade of the heat-insulating plate is A1 grade, the plate is not aged, the wall surface is smooth and attractive after construction, and the heat-insulating effect is finally achieved;
s3 construction of a protective net: the gauze is adhered to the heat-insulation board by glue, so that the purposes of ageing resistance and tensile crack resistance of the wall surface are achieved, and the leveling is carried out by adopting outer wall putty after construction to ensure that the wall surface is smooth;
s4 coating of exterior wall paint: the outer wall coating is used for coating the wall surface, is waterproof and mildew-proof, and is used for finishing the reconstruction of the outer wall after the coating is finished.
2. The exterior wall multilayer composite heat-preservation heat-insulation fireproof construction process according to claim 1, characterized in that: in the step S1, the components of the exterior wall adhesive are calculated according to the mass portion: 32-40 parts of cement, 19-25 parts of polystyrene, 14-17 parts of polyether polyol, 23-24 parts of polymethylene polyphenyl isocyanate, 18-19 parts of polypropylene oxide, 5-8 parts of redispersible latex powder and 2-4 parts of lignin fiber.
3. The exterior wall multilayer composite heat-preservation heat-insulation fireproof construction process according to claim 1, characterized in that: in the step S2, the insulation board is a multilayer composite of flame-retardant polystyrene foam material and polyurethane foam layer, and the surface near the outer wall is the flame-retardant polystyrene foam material.
4. The exterior wall multilayer composite heat-preservation heat-insulation fireproof construction process according to claim 1, characterized in that: in the step S4, the exterior wall coating comprises 52-55 parts of cement, 10-12 parts of shell powder, 5-8 parts of redispersible latex powder, 3-4 parts of titanium dioxide, 5-6 parts of bone glue powder and 7-10 parts of lithium slag powder.
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