CN108265854B - On-site foaming polyurethane external wall external heat insulation system and construction method thereof - Google Patents
On-site foaming polyurethane external wall external heat insulation system and construction method thereof Download PDFInfo
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- CN108265854B CN108265854B CN201810298911.5A CN201810298911A CN108265854B CN 108265854 B CN108265854 B CN 108265854B CN 201810298911 A CN201810298911 A CN 201810298911A CN 108265854 B CN108265854 B CN 108265854B
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- 238000005187 foaming Methods 0.000 title claims abstract description 128
- 239000004814 polyurethane Substances 0.000 title claims abstract description 119
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 118
- 238000009413 insulation Methods 0.000 title claims abstract description 59
- 238000010276 construction Methods 0.000 title claims abstract description 23
- 238000011065 in-situ storage Methods 0.000 claims abstract description 41
- 238000002955 isolation Methods 0.000 claims abstract description 35
- 239000011490 mineral wool Substances 0.000 claims abstract description 35
- 238000000034 method Methods 0.000 claims abstract description 21
- 238000004321 preservation Methods 0.000 claims description 35
- 239000006260 foam Substances 0.000 claims description 22
- 239000000919 ceramic Substances 0.000 claims description 18
- 239000000853 adhesive Substances 0.000 claims description 17
- 239000011494 foam glass Substances 0.000 claims description 16
- 238000005266 casting Methods 0.000 claims description 12
- 238000005034 decoration Methods 0.000 claims description 7
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 5
- 239000011496 polyurethane foam Substances 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 4
- 239000003973 paint Substances 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 239000011550 stock solution Substances 0.000 claims description 3
- 239000004575 stone Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 12
- 238000004134 energy conservation Methods 0.000 abstract description 8
- 238000009434 installation Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000005457 optimization Methods 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 5
- 230000002787 reinforcement Effects 0.000 abstract description 3
- 239000011810 insulating material Substances 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920006389 polyphenyl polymer Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
Classifications
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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
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
-
- 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
- E04B1/64—Insulation or other protection; Elements or use of specified material therefor for making damp-proof; Protection against corrosion
- E04B1/644—Damp-proof courses
-
- 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
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/24—Structural elements or technologies for improving thermal insulation
- Y02A30/244—Structural elements or technologies for improving thermal insulation using natural or recycled building materials, e.g. straw, wool, clay or used tires
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/90—Passive houses; Double facade technology
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Acoustics & Sound (AREA)
- Building Environments (AREA)
Abstract
The application provides an on-site foaming polyurethane external wall external heat insulation system, which comprises a base layer wall body, a polyurethane dampproof primer layer, an on-site foaming polyurethane heat insulation layer or rock wool fireproof isolation belt, a fireproof layer and a finish layer which are sequentially arranged from inside to outside; the application also provides a construction method of the in-situ foaming polyurethane external wall external heat insulation system; the application forms a strong combination through material optimization, structure optimization and process reinforcement, so that the structure of the external heat insulation system of the external wall is simplified, the production and construction costs are lower, the connection strength with the external wall is higher, the installation and construction are more convenient and faster, the phenomenon of internal and external cold and hot bridges is smaller, the waterproof effect is better, the heat insulation and energy conservation effects and the fireproof effect are better, and the service life is longer.
Description
Technical Field
The invention relates to the technical field of building heat preservation, in particular to an on-site foaming polyurethane external wall external heat preservation system and a construction method thereof.
Background
The building energy conservation is an important job for relieving the contradiction of energy shortage in China, improving the living and working conditions of people, reducing environmental pollution and promoting economic sustainable development. The building energy conservation mainly comprises three parts of building roof heat preservation and heat insulation, building external maintenance wall body and external door and window heat preservation and heat insulation and energy conservation of building equipment.
At present, the energy-saving requirement of China on the external wall external heat insulation system is 75% energy saving and more, and the fireproof requirement on the external wall external heat insulation system is a class A fireproof requirement.
Building energy conservation is a requirement for realizing sustainable development, building fire prevention is a requirement for social security, and both the building energy conservation and the building fire prevention must be considered.
The existing external thermal insulation system mainly comprises an EPS/XPS board thin plastering external thermal insulation system, a rubber powder polyphenyl particle thermal insulation slurry external thermal insulation system, an inorganic thermal insulation slurry external thermal insulation system, a rigid foam Polyurethane (PU) board external thermal insulation system, a cast-in-place rigid foam polyurethane external thermal insulation system, a thermal insulation and decoration integrated external thermal insulation system, an EPS/XPS board net or net-free cast-in-situ concrete external thermal insulation system and the like.
Along with technological progress and economic and social development, the existing external thermal insulation systems of various external walls gradually expose some problems: the structure is complex, the production cost is high, the connection strength with the wall body is weak, the installation and construction are complex, the efficiency is low, the phenomenon of internal and external cold and hot bridges is obvious, the construction cost is high, the waterproof effect is poor, and the like.
Therefore, how to provide an external wall external heat insulation system with a simpler structure, lower production and construction cost, higher connection strength with a matrix wall body, convenient and quick installation and construction, smaller internal and external cold and hot bridge phenomenon and better waterproof effect is a technical problem to be solved by the technicians in the field.
Disclosure of Invention
The invention aims to provide an on-site foaming polyurethane external wall external heat preservation system which has the advantages of simpler structure, lower production and construction cost, higher connection strength with a matrix wall body, convenient and quick installation and construction, smaller internal and external cold and hot bridge phenomenon and better waterproof effect. The invention further aims to provide a construction method of the in-situ foaming polyurethane external wall external heat insulation system.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
The on-site foaming polyurethane external wall external heat insulation system is divided into multiple layers along the inner and outer directions and comprises a base layer wall body, a polyurethane dampproof primer layer, an on-site foaming polyurethane heat insulation layer or rock wool fireproof isolation belt, a fireproof layer and a finish layer which are sequentially arranged from inside to outside;
The outer wall surface of the base layer wall body is connected with the inner long wide surface of the polyurethane dampproof primer layer in an adhesive manner;
the outer long and wide surface of the polyurethane dampproof primer layer and the inner long and wide surface of the in-situ foaming polyurethane heat-insulating layer form self-adhesive connection in the in-situ casting polyurethane foaming forming process;
The outer long and wide surface of the in-situ foaming polyurethane heat-insulating layer and the inner long and wide surface of the fireproof layer form self-adhesive connection in the in-situ casting polyurethane foaming forming process;
The outer long and wide surface of the fireproof layer is connected with the inner long and wide surface of the finish layer in an adhesive manner;
the in-situ foaming polyurethane heat-insulating layer and the rock wool fireproof isolation belt are arranged alternately along the vertical direction;
the two upper and lower adjacent on-site foaming polyurethane heat-insulating layers are separated by the rock wool fireproof isolation belt;
The rock wool fireproof isolation belts are arranged on the top long thick side surface and the bottom long thick side surface of the on-site foaming polyurethane heat-insulating layer of each layer;
The in-situ foaming polyurethane heat-insulating layer and the rock wool fireproof isolation belt form self-adhesive connection in the in-situ casting polyurethane foaming forming process;
the fireproof layer is positioned between the in-situ foaming polyurethane heat-insulating layer and the facing layer, and the fireproof layer is positioned between the rock wool fireproof isolation belt and the facing layer;
The fireproof layer is formed by splicing foam glass heat-insulating plates or foam ceramic heat-insulating plates;
The top of the on-site foaming polyurethane heat preservation layer of each layer is embedded with an exhaust bent pipe for communicating the foaming cavity with the atmosphere to exhaust, the exhaust bent pipe is penetrated and fixed on the foam glass heat preservation plate or the foam ceramic heat preservation plate, the inner end of the exhaust bent pipe is embedded in the on-site foaming polyurethane heat preservation layer, and the outer end of the exhaust bent pipe penetrates through the fireproof layer and the finish layer from inside to outside in sequence to be exposed out of the finish layer and communicated with the atmosphere.
Preferably, the facing layer is an exterior wall coating, stone-like paint, stone plate or ceramic tile selected according to the decoration requirement and the decoration engineering specification requirement.
Preferably, the thickness of the fireproof layer is not less than 5cm.
The construction method of the in-situ foaming polyurethane external wall external heat preservation system, which comprises the following steps:
1) Firstly, spraying polyurethane dampproof primer on the outer wall surface of a base wall;
2) Then supporting and fixing the foam glass heat-insulating plate or the foam ceramic heat-insulating plate by using a supporting frame, splicing the foam glass heat-insulating plate or the foam ceramic heat-insulating plate into a fireproof layer, taking the fireproof layer as a foaming outer template formed by casting polyurethane foam on site, taking the outer wall surface sprayed with a polyurethane dampproof primer layer as a foaming inner template, and enclosing the foaming outer template and the outer wall surface sprayed with the polyurethane dampproof primer layer into a box-shaped foaming mold which is only provided with a rectangular cross section with an opening at the top and the bottom and contains a foaming cavity;
Then sealing the bottom opening and the top opening of the box-shaped foaming mold by using a rock wool fireproof isolation belt;
Then, an exhaust elbow is penetrated and fixed at the top of the foam glass heat-insulating plate or the foam ceramic heat-insulating plate, the inner end of the exhaust elbow is inserted into the foaming cavity, and the outer end of the exhaust elbow is exposed out of the fireproof layer and communicated with the atmosphere;
Then pouring polyurethane foam plastic stock solution into the foaming cavity on site, and preparing a layer of on-site foaming polyurethane heat-insulating layer after polyurethane foaming molding;
3) According to the method of the step 2), splicing the next layer of foaming outer template, installing the next layer of rock wool fireproof isolation belt and pouring the next layer of in-situ foaming polyurethane heat preservation layer, after sequentially finishing splicing the next layer of foaming outer template, installing the last layer of rock wool fireproof isolation belt and pouring the last layer of in-situ foaming polyurethane heat preservation layer, and pouring the in-situ foaming polyurethane heat preservation layer from bottom to top on the outer wall surface;
4) And then installing a finish coat on the outer long and wide surface of the fireproof layer, and obtaining the on-site foaming polyurethane external wall external heat insulation system after finishing.
The application provides an on-site foaming polyurethane external wall external heat insulation system, which comprises a base layer wall body, a polyurethane dampproof primer layer, an on-site foaming polyurethane heat insulation layer or rock wool fireproof isolation belt, a fireproof layer and a finish layer which are sequentially arranged from inside to outside;
The application optimizes the material of the heat-insulating layer, adopts the hard foam polyurethane heat-insulating material, and fully utilizes the excellent performances of heat insulation, water resistance, high temperature resistance and the like of the hard foam polyurethane heat-insulating material;
The structure of the external heat insulation system of the external wall is optimized, the external heat insulation system of the external wall is divided into a plurality of layers along the internal and external directions, and the in-situ foaming polyurethane heat insulation layers and the rock wool fireproof isolation belts are arranged at intervals along the vertical direction;
The construction preparation method of the external wall external heat insulation system is optimized, the spliced fireproof layer is directly used as a foaming external template, the external wall surface sprayed with the polyurethane dampproof primer is used as a foaming internal template, the spliced foaming external template is supported firstly, then the site foaming polyurethane heat insulation layer is prepared by reappearance field pouring, and the site foaming polyurethane heat insulation layer directly forms self-adhesive connection with the polyurethane dampproof primer layer, the fireproof layer and the rock wool fireproof isolation belt in the foaming forming process;
The application forms a strong combination through material optimization, structure optimization and process reinforcement, so that the structure of the external heat insulation system of the external wall is simplified, the production and construction costs are lower, the connection strength with the external wall is higher, the installation and construction are more convenient and faster, the phenomenon of internal and external cold and hot bridges is smaller, the waterproof effect is better, the heat insulation and energy conservation effects and the fireproof effect are better, and the service life is longer.
Drawings
Fig. 1 is a schematic view of a vertical cross-section structure of an in-situ foaming polyurethane external thermal insulation system according to an embodiment of the present invention (the finish layer in fig. 1 is selected as an example of external wall coating, and the exhaust elbow in fig. 1 is not cut).
In the figure: 1a base wall body, 2a polyurethane dampproof primer layer, 3a foaming polyurethane heat-insulating layer on site, 4 a rock wool fireproof isolation belt, 5a foam glass heat-insulating board or a foam ceramic heat-insulating board, 6 a facing layer and 7 an exhaust elbow.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "center", "axial", "radial", "longitudinal", "transverse", "length", "width", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "vertical", "horizontal", etc. indicate orientations or positional relationships based on the actual orientations or positional relationships, are merely used for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
In the present invention, unless expressly stated or limited otherwise, a first feature being "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is less level than the second feature.
Referring to fig. 1, fig. 1 is a schematic view of a vertical cross-section structure of an in-situ foaming polyurethane external wall external heat insulation system according to an embodiment of the present invention.
The application provides an on-site foaming polyurethane external wall external heat insulation system which is divided into multiple layers along the inner and outer directions and comprises a base layer wall body 1, a polyurethane dampproof primer layer 2, an on-site foaming polyurethane heat insulation layer 3 or a rock wool fireproof isolation belt 4, a fireproof layer and a finish layer 6 which are sequentially arranged from inside to outside;
the outer wall surface of the base layer wall body 1 is connected with the inner long and wide surface of the polyurethane dampproof primer layer 2 in an adhesive manner;
the outer long and wide surface of the polyurethane dampproof primer layer 2 and the inner long and wide surface of the in-situ foaming polyurethane heat-insulating layer 3 form self-adhesive connection in the in-situ casting polyurethane foaming forming process;
the outer long and wide surface of the on-site foaming polyurethane heat preservation layer 3 and the inner long and wide surface of the fireproof layer form self-adhesive connection in the on-site casting polyurethane foaming forming process;
the outer long and wide surface of the fireproof layer is in adhesive connection with the inner long and wide surface of the finish coat 6;
the in-situ foaming polyurethane heat preservation layer 3 and the rock wool fireproof isolation belt 4 are arranged alternately along the vertical direction;
The two upper and lower adjacent foaming polyurethane thermal insulation layers 3 are separated by the rock wool fireproof isolation belt 4;
The rock wool fireproof isolation belts 4 are arranged on the top long thick side surface and the bottom long thick side surface of the on-site foaming polyurethane heat preservation layer 3 of each layer;
The in-situ foaming polyurethane heat-insulating layer 3 and the rock wool fireproof isolation belt 4 form self-adhesive connection in the in-situ casting polyurethane foaming forming process;
The fireproof layer is positioned between the in-situ foaming polyurethane heat preservation layer 3 and the facing layer 6, and the fireproof layer is positioned between the rock wool fireproof isolation belt 4 and the facing layer 6;
the fireproof layer is formed by splicing foam glass heat-insulating plates or foam ceramic heat-insulating plates 5;
An exhaust bent pipe 7 for communicating the foaming cavity with the atmosphere to exhaust is pre-buried in the top of the on-site foaming polyurethane heat preservation layer 3 of each layer, the exhaust bent pipe 7 is penetratingly fixed on the foam glass heat preservation plate or the foam ceramic heat preservation plate, the inner end of the exhaust bent pipe 7 is pre-buried in the on-site foaming polyurethane heat preservation layer 3, and the outer end of the exhaust bent pipe 7 penetrates through the fireproof layer and the finish coat 6 from inside to outside in sequence and is exposed out of the finish coat 6 to communicate with the atmosphere.
In one embodiment of the present application, the finishing layer 6 is an exterior wall paint, stone-like paint, stone board or tile selected according to the decoration requirements and the requirements of the decoration engineering specifications.
In one embodiment of the application, the thickness of the fire-blocking layer is not less than 5cm.
The application also provides a construction method of the in-situ foaming polyurethane external wall external heat insulation system, which comprises the following steps:
1) Firstly, spraying polyurethane dampproof primer on the outer wall surface of a base wall body 1;
2) Then supporting and fixing the foam glass heat-insulating plate or the foam ceramic heat-insulating plate 5 by using a supporting frame and splicing the foam glass heat-insulating plate or the foam ceramic heat-insulating plate into a fireproof layer, taking the fireproof layer as a foaming outer template for on-site casting polyurethane foaming molding, taking the outer wall surface sprayed with the polyurethane dampproof primer layer 2 as a foaming inner template, and enclosing the foaming outer template and the outer wall surface sprayed with the polyurethane dampproof primer layer 2 into a box-shaped foaming mold which is only provided with a rectangular cross section with an opening at the top and the bottom and contains a foaming cavity;
then, the bottom opening and the top opening of the box-shaped foaming mold are blocked by using a rock wool fireproof isolation belt 4;
Then, an exhaust elbow pipe 7 is penetrated and fixed on the top of the foam glass heat-insulating plate or the foam ceramic heat-insulating plate, the inner end of the exhaust elbow pipe 7 is inserted into the foaming cavity, and the outer end of the exhaust elbow pipe 7 is exposed out of the fireproof layer and communicated with the atmosphere;
Then pouring polyurethane foam plastic stock solution into the foaming cavity on site, and preparing a layer of on-site foaming polyurethane heat-insulating layer 3 after foaming and molding polyurethane;
3) According to the method of the step 2), splicing the next layer of foaming outer template, installing the next layer of rock wool fireproof isolation belt 4 and pouring the next layer of in-situ foaming polyurethane heat preservation layer 3, after sequentially finishing splicing the upper layer of foaming outer template, installing the last layer of rock wool fireproof isolation belt 4 and pouring the upper layer of in-situ foaming polyurethane heat preservation layer 3, and pouring the in-situ foaming polyurethane heat preservation layer 3 layer by layer from bottom to top on an outer wall surface;
4) And then installing a finish coat 6 on the outer long and wide surface of the fireproof layer, and obtaining the on-site foaming polyurethane external wall external heat insulation system after finishing.
The application provides an on-site foaming polyurethane external wall external heat insulation system which comprises a base layer wall body 1, a polyurethane dampproof primer layer 2, an on-site foaming polyurethane heat insulation layer 3 or a rock wool fireproof isolation belt 4, a fireproof layer and a finish layer 6 which are sequentially arranged from inside to outside;
The application optimizes the material of the heat-insulating layer, adopts the hard foam polyurethane heat-insulating material, and fully utilizes the excellent performances of heat insulation, water resistance, high temperature resistance and the like of the hard foam polyurethane heat-insulating material;
The structure of the external heat insulation system of the external wall is optimized, the external heat insulation system of the external wall is divided into a plurality of layers along the internal and external directions, and the on-site foaming polyurethane heat insulation layers 3 and the rock wool fireproof isolation belts 4 are arranged at intervals along the vertical direction;
The construction preparation method of the external wall external heat insulation system is optimized, the spliced fireproof layer is directly used as a foaming external template, the external wall surface sprayed with polyurethane dampproof primer is used as a foaming internal template, the spliced foaming external template is supported firstly, then the foaming external template is prepared by reappearance field pouring, the foaming polyurethane heat insulation layer 3 in situ is directly connected with the polyurethane dampproof primer layer 2, the fireproof layer and the rock wool fireproof isolation belt 4 in a self-adhesive mode in the foaming forming process;
The application forms a strong combination through material optimization, structure optimization and process reinforcement, so that the structure of the external heat insulation system of the external wall is simplified, the production and construction costs are lower, the connection strength with the external wall is higher, the installation and construction are more convenient and faster, the phenomenon of internal and external cold and hot bridges is smaller, the waterproof effect is better, the heat insulation and energy conservation effects and the fireproof effect are better, and the service life is longer.
The method and the device which are not described in detail in the invention are all the prior art and are not described in detail.
The principles and embodiments of the present invention have been described herein with reference to specific examples, which are intended to be merely illustrative of the methods of the present invention and their core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
Claims (3)
1. The construction method of the on-site foaming polyurethane external wall external heat preservation system comprises the on-site foaming polyurethane external wall external heat preservation system, and is characterized in that the on-site foaming polyurethane external wall external heat preservation system is divided into multiple layers along the inner and outer directions and comprises a base layer wall body, a polyurethane dampproof primer layer, an on-site foaming polyurethane heat preservation layer or rock wool fireproof isolation belt, a fireproof layer and a finish layer which are sequentially arranged from inside to outside; the outer wall surface of the base layer wall body is connected with the inner long wide surface of the polyurethane dampproof primer layer in an adhesive manner; the outer long and wide surface of the polyurethane dampproof primer layer and the inner long and wide surface of the in-situ foaming polyurethane heat-insulating layer form self-adhesive connection in the in-situ casting polyurethane foaming forming process;
The outer long and wide surface of the in-situ foaming polyurethane heat-insulating layer and the inner long and wide surface of the fireproof layer form self-adhesive connection in the in-situ casting polyurethane foaming forming process;
The outer long and wide surface of the fireproof layer is connected with the inner long and wide surface of the finish layer in an adhesive manner;
the in-situ foaming polyurethane heat-insulating layer and the rock wool fireproof isolation belt are arranged alternately along the vertical direction;
the two upper and lower adjacent on-site foaming polyurethane heat-insulating layers are separated by the rock wool fireproof isolation belt;
The rock wool fireproof isolation belts are arranged on the top long thick side surface and the bottom long thick side surface of the on-site foaming polyurethane heat-insulating layer of each layer;
The in-situ foaming polyurethane heat-insulating layer and the rock wool fireproof isolation belt form self-adhesive connection in the in-situ casting polyurethane foaming forming process;
the fireproof layer is positioned between the in-situ foaming polyurethane heat-insulating layer and the facing layer, and the fireproof layer is positioned between the rock wool fireproof isolation belt and the facing layer;
The fireproof layer is formed by splicing foam glass heat-insulating plates or foam ceramic heat-insulating plates;
An exhaust elbow pipe for communicating the foaming cavity with the atmosphere to exhaust is pre-embedded in the top of the on-site foaming polyurethane heat preservation layer of each layer, the exhaust elbow pipe is penetrated and fixed on the foam glass heat preservation plate or the foam ceramic heat preservation plate, the inner end of the exhaust elbow pipe is pre-embedded in the on-site foaming polyurethane heat preservation layer, and the outer end of the exhaust elbow pipe sequentially penetrates through the fireproof layer and the finish layer from inside to outside to be exposed out of the finish layer and communicated with the atmosphere; the method comprises the following steps:
1) Firstly, spraying polyurethane dampproof primer on the outer wall surface of a base wall;
2) Then supporting and fixing the foam glass heat-insulating plate or the foam ceramic heat-insulating plate by using a supporting frame, splicing the foam glass heat-insulating plate or the foam ceramic heat-insulating plate into a fireproof layer, taking the fireproof layer as a foaming outer template formed by casting polyurethane foam on site, taking the outer wall surface sprayed with a polyurethane dampproof primer layer as a foaming inner template, and enclosing the foaming outer template and the outer wall surface sprayed with the polyurethane dampproof primer layer into a box-shaped foaming mold which is only provided with a rectangular cross section with an opening at the top and the bottom and contains a foaming cavity;
Then pouring polyurethane foam plastic stock solution into the foaming cavity on site, and preparing a layer of on-site foaming polyurethane heat-insulating layer after polyurethane foaming molding;
Then, an exhaust elbow is penetrated and fixed at the top of the foam glass heat-insulating plate or the foam ceramic heat-insulating plate, the inner end of the exhaust elbow is inserted into the foaming cavity, and the outer end of the exhaust elbow is exposed out of the fireproof layer and communicated with the atmosphere;
Then sealing the bottom opening and the top opening of the box-shaped foaming mold by using a rock wool fireproof isolation belt;
3) According to the method of the step 2), splicing the next layer of foaming outer template, installing the next layer of rock wool fireproof isolation belt and pouring the next layer of in-situ foaming polyurethane heat preservation layer, after sequentially finishing splicing the next layer of foaming outer template, installing the last layer of rock wool fireproof isolation belt and pouring the last layer of in-situ foaming polyurethane heat preservation layer, and pouring the in-situ foaming polyurethane heat preservation layer from bottom to top on the outer wall surface;
4) And then installing a finish coat on the outer long and wide surface of the fireproof layer, and obtaining the on-site foaming polyurethane external wall external heat insulation system after finishing.
2. The construction method of the in-situ foaming polyurethane external thermal insulation system according to claim 1, wherein the finishing layer is an external wall coating, stone-like paint, stone plate or ceramic tile selected according to decoration requirements and decoration engineering specification requirements.
3. The method for constructing an exterior wall insulation system of foamed-in-place polyurethane as claimed in claim 2, wherein the thickness of the fireproof layer is not less than 5cm.
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| CN109184023A (en) * | 2018-09-13 | 2019-01-11 | 山东斯普瑞节能科技有限公司 | Wall heat preservation decoration fire prevention module compound system for building |
| CN112900773A (en) * | 2021-01-27 | 2021-06-04 | 斯蒙特节能科技(上海)有限公司 | Outer wall lightweight heat preservation and decoration integrated board |
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