CN113756548A - Reinforced bonding method of spray-coated hard foam polyurethane and leveling layer for building outer wall - Google Patents
Reinforced bonding method of spray-coated hard foam polyurethane and leveling layer for building outer wall Download PDFInfo
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- CN113756548A CN113756548A CN202111244473.2A CN202111244473A CN113756548A CN 113756548 A CN113756548 A CN 113756548A CN 202111244473 A CN202111244473 A CN 202111244473A CN 113756548 A CN113756548 A CN 113756548A
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- foam polyurethane
- leveling layer
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- cavity
- rigid foam
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F21/00—Implements for finishing work on buildings
- E04F21/02—Implements for finishing work on buildings for applying plasticised masses to surfaces, e.g. plastering walls
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F13/00—Coverings or linings, e.g. for walls or ceilings
- E04F13/02—Coverings or linings, e.g. for walls or ceilings of plastic materials hardening after applying, e.g. plaster
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F13/00—Coverings or linings, e.g. for walls or ceilings
- E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F21/00—Implements for finishing work on buildings
- E04F21/02—Implements for finishing work on buildings for applying plasticised masses to surfaces, e.g. plastering walls
- E04F21/16—Implements for after-treatment of plaster or the like before it has hardened or dried, e.g. smoothing-tools, profile trowels
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Building Environments (AREA)
Abstract
The invention relates to a method for enhancing bonding between thermal insulation material spraying rigid foam polyurethane for a building outer wall and a leveling layer, and belongs to the technical field of building outer wall thermal insulation. The method comprises the steps of adopting the sprayed hard foam polyurethane of the external wall heat insulation material, using the cement anti-crack mortar as the leveling layer material of the sprayed hard foam polyurethane surface, using the cement steel nails as the reinforcing rib material, and using the cavity in the sprayed hard foam polyurethane foam as the bonding enhancement measure. The leveling layer is formed by respectively plastering cement anti-cracking mortar and implanting cement steel nails into the cavity in the sprayed hard foam polyurethane foam body, and the sprayed hard foam polyurethane is stably bonded with enhanced reliability.
Description
Technical Field
The invention relates to a reinforced bonding method of spray-coated hard foam polyurethane and a leveling layer for a building outer wall, belonging to the technical field of building outer wall heat insulation.
Background
At present, a method for bonding a sprayed rigid foam polyurethane surface layer and a leveling layer for a building outer wall is mainly carried out by adopting a method for jointly using a chemical interface agent and rubber powder polyphenyl particle thermal insulation mortar as a leveling layer material according to the technical scheme in national standard GB 50404-2017 of rigid foam polyurethane thermal insulation waterproof engineering specification; the scheme has the advantages that the chemical interface agent and the glue powder polyphenyl particle thermal insulation mortar are easy to age, and hollowing and delamination are easily generated with spraying hard foam polyurethane in the later period, so that the building outer wall finish coat finally falls off, and great potential safety hazards are realized.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provide a safe, reliable and high-durability method for bonding sprayed rigid foam polyurethane and a leveling layer under the condition of keeping a chemical interface agent.
The reinforced adhesion method of sprayed hard foam polyurethane and leveling layer for outer wall of building includes spraying hard foam polyurethane (1) as heat insulating material for outer wall of building, spraying cement anti-cracking mortar (2) as leveling layer material, spraying cement steel nail (3) as reinforcing rib material and spraying mold cavity (4) formed in hard foam polyurethane.
The reinforced bonding method of the spray hard foam polyurethane and the leveling layer for the building outer wall is characterized in that the apparent density of the spray hard foam polyurethane (1) is more than or equal to 45kg/m3And fire rating of above grade B2.
The reinforced bonding method of the sprayed rigid foam polyurethane and the leveling layer for the building outer wall is characterized in that the leveling layer material (2) is usually cement anti-cracking mortar and does not contain rubber powder polyphenyl particle thermal insulation mortar.
The reinforced bonding method of the sprayed hard foam polyurethane and the leveling layer for the building outer wall is characterized in that a cement steel nail (3) used as a reinforcing rib material is a steel nail made of C40-45# medium carbon steel.
The reinforced bonding method of the spray hard foam polyurethane and the leveling layer for the building outer wall is characterized in that the spray hard foam polyurethane foam is formed by a mould pressing method generally as a forming method of a cavity (4) in the spray hard foam polyurethane foam, and the forming method comprises but is not limited to the forming methods; the shape of the cavity is generally a cylinder, a cone, a polygon and the like, the bottom of the cavity can be a flat bottom, an arc bottom and a cone-tip bottom, and the outer contour of the cavity can be a linear type or an arc type, including but not limited to the above cavity forming method, cavity shape, cavity outer contour and cavity bottom shape.
The reinforced adhesion method of the sprayed hard foam polyurethane and the leveling layer for the building outer wall is characterized in that when the minimum thickness of a cement anti-cracking mortar layer serving as the leveling layer meets the design requirement of the protective layer, the mortar layer can be used instead of the protective layer.
The key innovation of the invention is as follows:
1. according to the solid-state change characteristic of material state by the gradual transform of rheology state in the solidification forming process of spraying rigid foam polyurethane, at the middle and later stages that spraying rigid foam polyurethane is not completely solidified and formed yet, adopt the special mould that hard material made to carry out artifical mould pressing to spraying rigid foam polyurethane surface layer design point position, make it form a plurality of die cavities in spraying rigid foam polyurethane foam, finally become one and not destroy spraying rigid foam polyurethane inner structure on a large scale, can wipe into the physics anchor point of cement mortar again.
2. By plastering the cement anti-crack mortar into the middle cavity of the sprayed hard foam polyurethane foam body and implanting the reinforcing rib cement steel nail, the shear strength and the bonding strength of the interface between the cement anti-crack mortar layer and the leveling layer and the sprayed hard foam polyurethane are increased, so that the overall stability and the reliability of the decorative layer of the outer wall of the building are improved.
The invention has the beneficial effects that:
1. the problem of the decorative layer drops in the spraying hard bubble polyurethane building outer wall heat preservation system is solved.
2. The building quality can be effectively improved.
Drawings
The invention relates to a reinforced bonding method of spray-coating hard foam polyurethane and a leveling layer for a building outer wall, which is described in the attached drawings of the specification as follows:
FIG. 1 is a structural example diagram of a method for enhancing adhesion between sprayed rigid foam polyurethane and a leveling layer.
In fig. 1, 1 is spray-coated rigid foam polyurethane.
And 2 in the figure 1 is cement anti-cracking mortar.
And 3 in the figure 1 is a cement steel nail.
Fig. 2 is a schematic cross-sectional view of a cavity designed as a cone in a spray-applied rigid foam polyurethane.
In fig. 2, 1 is spray-applied hard-bubble polyurethane.
2 in fig. 2, is the diameter dimension mm of the opening of the conical cavity.
And 3 in figure 2, is the diameter dimension mm of the bottom of the conical cavity.
And 4 in fig. 2, is the height dimension mm of the conical cavity.
In fig. 2, the space is limited, and the structural layer of the alkali-resistant fiberglass mesh cloth is not shown (the actual number of layers is determined according to the design requirement).
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the specification of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b):
the embodiment is a method for bonding sprayed rigid foam polyurethane and a leveling layer for a building outer wall, and the following reference specifications, which are respectively introduced in the attached drawings 1 and 2, are as follows:
1 in figure 1, the thickness of the sprayed rigid foam polyurethane (1) used as the heat-insulating layer is 30mm, the fire resistance grade is B1 grade, and the apparent density is 55kg/m3。
2 in figure 1, the thickness of the cement anti-cracking mortar (2) used as a leveling layer is 10 mm.
3 in fig. 1, the length of the cement steel nail (3) used as a reinforcing material is 20 mm.
FIG. 2, 1, is a spray-coating of a hard-foamed polyurethane (1) having a thickness of 30mm, a fire resistance rating of B1, and an apparent density of 55kg/m3。
2 in fig. 2, the opening diameter of the conical cavity is 20 mm.
3 in figure 2, is the diameter size of the bottom of the conical cavity of 6mm
And 4 in fig. 2, is the height dimension of the conical cavity of 15 mm.
The implementation steps are as follows:
the steps (1), (2) and (3) are indicated in the attached figure 1 of the specification.
1. After the spraying of the outer wall rigid foam polyurethane is finished and before the rigid foam polyurethane is not completely cured, manually carrying out die pressing on the surface of the sprayed rigid foam polyurethane (1) by using a special die to mold a conical cavity.
2. And (3) brushing a chemical interface agent on the surface of the sprayed rigid foam polyurethane (1).
3. Cement anti-crack mortar (2) is smeared into the molded conical cavity and is filled.
4. And vertically implanting a cement steel nail (3) into the conical cavity which is plastered with the cement anti-crack mortar.
5. Cement anti-crack mortar (3) is smeared on the surface of the sprayed hard foam polyurethane (1), the total thickness is 10mm, and alkali-resistant glass fiber mesh cloth is paved according to the design requirement in the construction.
Having shown and described embodiments of the present invention, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The reinforced adhesion method of the sprayed rigid foam polyurethane and the leveling layer for the building outer wall is characterized by comprising the steps of adopting the sprayed rigid foam polyurethane (1) as a heat insulation material for the building outer wall, cement anti-cracking mortar (2) as a leveling layer material, cement steel nails (3) as a reinforcing rib material and a cavity (4) formed in a mode of compression molding in a sprayed rigid foam polyurethane body.
2. The method for enhancing the adhesion between the sprayed rigid foam polyurethane and the leveling layer for the exterior wall of the building as claimed in claim 1, wherein the apparent density of the sprayed rigid foam polyurethane (1) is not less than 45kg/m3And the fire-retardant rating is above B2.
3. The method for enhancing the adhesion between the sprayed rigid foam polyurethane and the leveling layer for the exterior wall of the building as claimed in claim 1, wherein the leveling layer material (2) is usually a cement anti-crack mortar, but does not include a rubber powder polyphenyl granule thermal insulation mortar.
4. The method for enhancing the adhesion of sprayed hard foam polyurethane and leveling layer for building exterior wall according to claim 1, wherein the cement steel nails (3) as the reinforcing material are usually C40-45# medium carbon steel.
5. The method for enhancing adhesion between sprayed hard foam polyurethane and leveling layer for building exterior wall according to claim 1, wherein the cavity (4) in the sprayed hard foam polyurethane foam is formed by molding, and the shape of the cavity is generally a cylinder, a cone, a polygon, etc., the bottom of the cavity can be a flat bottom, a circular arc bottom, a conical tip bottom, and the outer contour of the cavity can be a straight line, a circular arc, the method includes but is not limited to the above methods, the shape of the cavity, the outer contour of the cavity, and the shape of the bottom of the cavity.
6. The method for enhancing adhesion of spray-coated rigid foam polyurethane to a leveling layer for exterior walls of buildings according to claim 1, wherein the thickness of the leveling layer is also a protective layer when the thickness of the protective layer meets the requirement of the thickness of the protective layer.
7. The method for enhancing the adhesion between the sprayed rigid foam polyurethane and the leveling layer for the exterior wall of the building as claimed in claim 1, wherein the method comprises the steps of adopting the sprayed rigid foam polyurethane (1) as the thermal insulation material for the exterior wall of the building, the thickness of the cement anti-crack mortar (2) as the leveling layer for the surface of the sprayed rigid foam polyurethane is generally more than 30mm, the thickness of the cement anti-crack mortar (2) as the leveling layer for the surface of the sprayed rigid foam polyurethane is generally between 10mm and 15mm, the length of the cement steel nail (3) as the reinforcing rib material is more than 20mm, and the size of the cavity in the sprayed rigid foam polyurethane is determined according to the design requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111244473.2A CN113756548A (en) | 2021-10-26 | 2021-10-26 | Reinforced bonding method of spray-coated hard foam polyurethane and leveling layer for building outer wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111244473.2A CN113756548A (en) | 2021-10-26 | 2021-10-26 | Reinforced bonding method of spray-coated hard foam polyurethane and leveling layer for building outer wall |
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| Publication Number | Publication Date |
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| CN113756548A true CN113756548A (en) | 2021-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111244473.2A Withdrawn CN113756548A (en) | 2021-10-26 | 2021-10-26 | Reinforced bonding method of spray-coated hard foam polyurethane and leveling layer for building outer wall |
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| CN (1) | CN113756548A (en) |
Citations (11)
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|---|---|---|---|---|
| CN2637599Y (en) * | 2003-07-04 | 2004-09-01 | 冀广宁 | External wall polyurethane hard foam external heat insulation composite wall body |
| CN2732878Y (en) * | 2004-10-20 | 2005-10-12 | 常州市鼎达建筑新技术有限公司 | External thermal insulating wall |
| CN1800530A (en) * | 2006-01-12 | 2006-07-12 | 黄菁华 | Hard polyurethane foam board composite energy-saving wall and its construction process |
| JP2008115532A (en) * | 2006-10-31 | 2008-05-22 | Noda Corp | Wall structure |
| CN101691798A (en) * | 2009-09-10 | 2010-04-07 | 东营市恒亚建材有限公司 | Reinforced insulation composite material for exterior wall and application method |
| CN202023311U (en) * | 2011-03-01 | 2011-11-02 | 唐山北极熊建材有限公司 | Outer wall outer heat insulation decoration layer structure based on super-light foaming cement heat insulation core material |
| CN202577618U (en) * | 2012-05-11 | 2012-12-05 | 叶香雄 | Polyurethane outer wall heat-preservation structure |
| CN203430021U (en) * | 2013-08-02 | 2014-02-12 | 徐振飞 | Split-free polyurethane composite heat insulation template for pouring concrete |
| CN204152000U (en) * | 2014-10-14 | 2015-02-11 | 曹建明 | A kind of inorganic compounding insulation construction for in-situ concrete wall |
| CN206034670U (en) * | 2016-07-01 | 2017-03-22 | 镇海建设集团有限公司 | Insulation board for building |
| CN106760033A (en) * | 2016-12-20 | 2017-05-31 | 成都佰思汇信科技有限责任公司 | A kind of building heat preservation interior wall |
-
2021
- 2021-10-26 CN CN202111244473.2A patent/CN113756548A/en not_active Withdrawn
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2637599Y (en) * | 2003-07-04 | 2004-09-01 | 冀广宁 | External wall polyurethane hard foam external heat insulation composite wall body |
| CN2732878Y (en) * | 2004-10-20 | 2005-10-12 | 常州市鼎达建筑新技术有限公司 | External thermal insulating wall |
| CN1800530A (en) * | 2006-01-12 | 2006-07-12 | 黄菁华 | Hard polyurethane foam board composite energy-saving wall and its construction process |
| JP2008115532A (en) * | 2006-10-31 | 2008-05-22 | Noda Corp | Wall structure |
| CN101691798A (en) * | 2009-09-10 | 2010-04-07 | 东营市恒亚建材有限公司 | Reinforced insulation composite material for exterior wall and application method |
| CN202023311U (en) * | 2011-03-01 | 2011-11-02 | 唐山北极熊建材有限公司 | Outer wall outer heat insulation decoration layer structure based on super-light foaming cement heat insulation core material |
| CN202577618U (en) * | 2012-05-11 | 2012-12-05 | 叶香雄 | Polyurethane outer wall heat-preservation structure |
| CN203430021U (en) * | 2013-08-02 | 2014-02-12 | 徐振飞 | Split-free polyurethane composite heat insulation template for pouring concrete |
| CN204152000U (en) * | 2014-10-14 | 2015-02-11 | 曹建明 | A kind of inorganic compounding insulation construction for in-situ concrete wall |
| CN206034670U (en) * | 2016-07-01 | 2017-03-22 | 镇海建设集团有限公司 | Insulation board for building |
| CN106760033A (en) * | 2016-12-20 | 2017-05-31 | 成都佰思汇信科技有限责任公司 | A kind of building heat preservation interior wall |
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Application publication date: 20211207 |
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| WW01 | Invention patent application withdrawn after publication |