Silicon graphene facing layer system and construction method thereof

Abstract

The invention relates to a silicon graphene facing layer system and a construction method thereof.The silicon graphene facing layer system is laid on an existing wall and comprises a silicon graphene layer laid on the existing wall; the waterproof layer is laid on the surface of the silicon graphene layer and sequentially comprises a first waterproof mortar layer, a first gridding cloth layer and a second waterproof mortar layer from the silicon graphene layer to the outside; the waterproof layer is arranged on the surface of the silicon graphene layer, so that the problems of water absorption and water seepage of the silicon graphene layer in an ultra-low-energy-consumption residential system are solved, meanwhile, the protective layer is further arranged, and the problem that in the outdoor using process of the silicon graphene material, the water absorption and water seepage of the silicon graphene layer are caused is solved. And due to factors such as wind and sunlight, temperature difference change and the like, the material surface weathers quickly and is easy to damage and crack.

Description

Technical Field

[0001] The present invention relates to the field of building construction, and in particular to a silicon-graphene finishing layer system and a construction method thereof. Background Art

[0002] Ultra-low energy buildings usually use silicon-graphene non-removal insulation formwork insulation system as the key to external enclosure insulation due to their high standards of enclosure insulation and heat insulation. At present, the industry generally uses silicon-graphene insulation system, which consists of concrete exterior wall, silicon-graphene non-removal insulation formwork, anchors, and protective layer (plastering layer and finishing layer), of which the plastering layer is anti-crack mortar internal pressure alkali-resistant mesh.

[0003] Currently, many projects have introduced and applied this construction method, but in actual applications, it was found that silicon-graphene insulation materials are prone to absorb water during use. Since the outer powder is composed of only a layer of anti-cracking mortar, it cannot prevent moisture from being absorbed into the material. Moisture may penetrate into the room along small gaps in the structure and damage the interior decoration. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a silicon-graphene finishing layer system and a construction method thereof, which solves the problem of silicon-graphene water absorption and water seepage in ultra-low energy consumption residential systems by additionally setting a waterproof layer.

[0005] The present invention discloses a silicon-graphene finishing layer system, which is laid on an existing wall surface, and comprises: a silicon-graphene layer laid on the existing wall surface; a waterproof layer laid on the surface of the silicon-graphene layer, the waterproof layer sequentially comprising a first waterproof mortar layer, a first mesh cloth layer, and a second waterproof mortar layer from the silicon-graphene layer outward; and an anchor, which sequentially passes through the waterproof layer and the silicon-graphene layer and is anchored to the wall surface.

[0006] A further improvement of the present invention is that it also includes a protective layer, which is laid on the surface of the waterproof layer, and the protective layer includes an anti-cracking mortar layer constructed on the surface of the second waterproof mortar layer; a second mesh cloth layer is laid in the anti-cracking mortar layer, and the part of the anchor located outside the waterproof layer is connected to the anti-cracking mortar layer.

[0007] A further improvement of the present invention is that the anchoring piece is a heat-insulating nail.

[0008] A further improvement of the present invention is that the surface of the silicon-graphene layer is provided with separation strips for dividing the silicon-graphene finishing layer system into blocks.

[0009] A construction method of the silicon-graphene finishing layer system comprises the following steps:

[0010] S1. Construction of waterproof layer: Apply two layers of waterproof mortar on the surface of the silicon graphene layer, fully hang the first mesh cloth layer between the two layers of waterproof mortar, and after the construction of the second waterproof mortar layer, pass the anchor through the waterproof layer and penetrate to the wall surface;

[0011] S2, construction of protective layer: applying anti-cracking mortar on the surface of the second waterproof mortar layer to form an anti-cracking mortar layer, and pressing the second mesh cloth layer into the anti-cracking mortar before it solidifies;

[0012] A further improvement of the present invention is that before executing step S1, the base surface of the silicon graphene layer is processed, and the base surface processing includes the following steps:

[0013] S01, grinding the weathered part of the surface of the silicon-graphene layer 10, filling the holes on the surface of the silicon-graphene layer, and repairing the joints and corners to ensure that the surface of the silicon-graphene layer is flat;

[0014] S02, applying an interface agent on the surface of the silicon graphene layer.

[0015] A further improvement of the present invention is that when repairing the seams and corners on the surface of the silicon-graphene layer, a mesh cloth is laid at the repaired locations.

[0016] A further improvement of the present invention is that before constructing the waterproof layer, a plurality of partition strips are first constructed on the surface of the silicon graphene layer to divide it into a plurality of blocks.

[0017] A further improvement of the present invention is that after the construction of the protective layer is completed, the silicon-graphene finishing layer system is regularly sprayed with water for maintenance.

[0018] The present invention solves the problem of water absorption and seepage of the silicon-graphene layer in the ultra-low energy consumption residential system by providing a waterproof layer. At the same time, a protective layer is provided to solve the problem that the surface of the silicon-graphene material weathers rapidly and is easily damaged and cracked due to factors such as wind, sun, and temperature changes during outdoor use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a construction flow chart of an embodiment of the present invention;

[0020] Figure 2 This is a structural diagram of the silicon-graphene finishing layer system of the present invention;

[0021] In the figure: 1. interface agent; 21. first waterproof mortar layer; 22. second waterproof mortar layer; 3. separator; 41. first mesh cloth layer; 42. second mesh cloth layer; 5. anchor; 6. anti-cracking mortar layer; 7. sealant; 8. foaming agent; 9. thermal insulation mortar; 10. silicon graphene layer; 11. existing wall surface; 12. screw hole. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0023] like Figure 2 As shown, a silicon-graphene finishing layer system is laid on an existing wall 11, comprising: a silicon-graphene layer 10 laid on the existing wall 11; a waterproof layer laid on the surface of the silicon-graphene layer 10, the waterproof layer sequentially comprising a first waterproof mortar layer 21, a first mesh cloth layer 41, and a second waterproof mortar layer 22 from the silicon-graphene layer 10 to the outside; an anchor 5, the anchor 5 sequentially passes through the waterproof layer and the silicon-graphene layer 10 and is anchored to the existing wall 11.

[0024] like Figure 2 As shown, it also includes a protective layer, which is laid on the surface of the waterproof layer. The protective layer includes an anti-cracking mortar layer 6 constructed on the surface of the second waterproof mortar layer 22; a second mesh cloth layer 42 laid in the anti-cracking mortar layer 6, and the part of the anchor 5 located outside the waterproof layer is connected to the anti-cracking mortar layer 6.

[0025] Preferably, the first mesh cloth layer 41 and the second mesh cloth layer 42 in the present embodiment are both made of alkali-resistant glass fiber mesh cloth, and the material properties of the alkali-resistant glass fiber mesh cloth should meet the following requirements: (1) mass per unit area ≥ 160g / ㎡; (2) alkali-resistant breaking strength ≥ 1200N / 50mm; (3) alkali-resistant breaking strength retention rate ≥ 65%; (4) elongation at break ≤ 4.0%.

[0026] In this embodiment, Figure 2 As shown, the anchor 5 is an insulation nail, which includes an anchor rod, a fixing plate fixed to one end of the anchor rod and an expansion sleeve sleeved on the anchor rod. The fixing plate is attached to the surface of the second waterproof mortar layer and buried in the anti-cracking mortar layer 6. The anchor rod tightly anchors the anchor 5 in the waterproof layer through the expansion sleeve.

[0027] like Figure 2 As shown, the surface of the silicon-graphene layer 10 is provided with separation strips 3 for dividing the silicon-graphene finishing layer system into blocks.

[0028] like Figure 2 As shown, preferably, the separator bar 3 in this embodiment is U-shaped, the web of the separator bar 3 is connected to the surface of the silicon graphene layer 10, and the flange plates on both sides are used to connect the layers of the two separated parts.

[0029] Preferably, the dividing strip 3 in this embodiment adopts a finished PVC dividing strip whose depth is greater than or equal to the depth of the waterproof layer plus the protective layer, and the dividing seam is not connected at the corners and the door and window openings of the exterior wall.

[0030] In this embodiment, the separation gap of the separation strip 3, that is, the U-shaped notch is filled with a sealant 7.

[0031] like Figure 1-2 As shown, a construction method of the silicon-graphene finishing layer system comprises the following steps:

[0032] S1, waterproof layer construction: two layers of waterproof mortar are applied on the surface of the silicon graphene layer 10, and the first mesh cloth layer 41 is fully hung between the two layers of waterproof mortar. After the second waterproof mortar layer 22 is constructed, the anchor 5 is passed through the waterproof layer and installed to the existing wall surface 11;

[0033] S2, construction of the protective layer: applying anti-cracking mortar on the surface of the second waterproof mortar layer 22 to form an anti-cracking mortar layer 6, and pressing the second mesh cloth layer 42 into the anti-cracking mortar before it solidifies;

[0034] Preferably, the waterproof mortar layer in this embodiment adopts polymer waterproof mortar, and the material properties of the polymer waterproof mortar should meet the following requirements: (1) initial setting time ≥45min; (2) final setting time ≤24h; (3) compressive strength ≥18mpa; (4) flexural strength ≥6mpa; (5) bonding strength (7d) ≥0.8mpa, bonding strength (28d) ≥1mpa.

[0035] like Figure 1 As shown, before executing step S1, the base surface of the silicon graphene layer 10 is processed, and the base surface processing includes the following steps:

[0036] S01, grinding the weathered part of the surface of the silicon-graphene layer 10, filling the holes on the surface of the silicon-graphene layer 10, and repairing the joints and corners to ensure that the surface of the silicon-graphene protective layer 10 is flat;

[0037] S02, applying an interface agent 1 on the surface of the silicon graphene layer 10.

[0038] Preferably, in this embodiment, when applying the interface agent 1, it needs to be applied repeatedly for multiple times so that a thin film is formed on the surface of the silicon graphene layer 10 to increase the adhesion while preventing water from penetrating.

[0039] Preferably, the material of the interface agent 1 in this embodiment should meet the following requirements: (1) minimum film-forming temperature ≤ 0°C; (2) non-volatile matter content ≥ 14%.

[0040] Preferably, in this embodiment, the first waterproof mortar layer 21 and the second waterproof mortar layer 22 are applied in a layered manner, and a first mesh cloth layer 41 is disposed therebetween, which can control the occurrence of cracks to a certain extent.

[0041] Preferably, in this embodiment, due to construction needs, such as for reasons such as attachment of climbing frames and embedded curtain wall parts, holes need to be left in the silicon-graphene layer 10 and the existing wall surface 11. During construction, larger holes (any side ≥ 10 cm) are filled with post-silicon-graphene, and smaller holes (any side ≤ 10 cm) are repaired with repair mortar to ensure the continuity and integrity of the exterior wall insulation.

[0042] like Figure 1-2 As shown, when repairing the seams and corners on the surface of the silicon graphene layer 10, a mesh cloth is laid at the repaired area.

[0043] Preferably, in this embodiment, when laying mesh cloth at joints, corners, etc., alkali-resistant glass fiber mesh cloth should be hung extending 150 mm on both sides.

[0044] Preferably, in this embodiment, screw holes 12 are left at corresponding positions of the graphene layer 10 and the existing wall 11, and the screw holes 12 need to be sealed. The sealing method is to use a foaming agent 8 to seal the screw hole 12, use a first waterproof mortar layer 21 to seal the outdoors, and use thermal insulation mortar 9 to seal the inside, so as to isolate water seepage while ensuring the continuity of thermal insulation.

[0045] Preferably, the material properties of the thermal insulation mortar 9 in this embodiment should meet the following requirements: (1) thermal conductivity ≤ 0.08 W / (m*K); (2) compressive strength ≥ 0.2 MPa; (3) tensile bond strength ≥ 0.2 MPa; (4) combustion performance is Class A1.

[0046] In this embodiment, the foaming agent 8 is a polyurethane foaming agent. During construction, the foaming agent 8 is first injected into the screw hole 12 to ensure that the screw hole 12 is densely filled. The two ends of the foaming agent 8 can be squeezed to ensure that the hole is densely filled. Do not damage or cut off the two ends to cause damage to the surface film of the polyurethane foaming agent and loss of waterproof function.

[0047] like Figure 1-2 As shown, before constructing the waterproof layer, a plurality of dividing strips 3 are first constructed on the surface of the silicon graphene layer 10 to divide it into a plurality of blocks.

[0048] like Figure 1-2 As shown, after the construction of the protective layer is completed, the silicon-graphene finishing layer system is regularly sprayed with water for maintenance.

[0049] Preferably, in this embodiment, the maintenance period should be about 2-3 days, and the maintenance time can be adjusted according to the temperature changes on site. The silicon-graphene insulation system is an external insulation system. Under sunlight, due to the thermal insulation effect, heat will quickly accumulate in the surface layer. Taking Shanghai as an example, the highest temperature of the surface layer can reach about 65°C. When the sunlight weakens, the temperature will drop sharply. The temperature difference of the surface layer is large. If it is not adequately maintained, large cracks will inevitably appear in the surface layer. The maintenance method can use a sprayer, soaked cloth or a water spray pipe to evenly spray water on the finishing layer to ensure that the surface remains moist. Moist maintenance should be carried out at least 2-3 times a day, especially in hot and dry weather conditions, the number of water sprays should be appropriately increased.

[0050] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A silicon-graphene finishing layer system, laid on an existing wall, characterized in that: include: A silicon-graphene layer laid on the existing wall; A waterproof layer laid on the surface of the silicon-graphene layer, the waterproof layer sequentially including a first waterproof mortar layer, a first mesh cloth layer, and a second waterproof mortar layer from the silicon-graphene layer outward; an anchor, the anchor sequentially passes through the waterproof layer and the silicon-graphene layer and is anchored to the wall surface.

2. A silicon-graphene finishing layer as claimed in claim 1, characterized in that: It also includes a protective layer, which is laid on the surface of the waterproof layer, and the protective layer includes an anti-cracking mortar layer constructed on the surface of the second waterproof mortar layer; a second mesh cloth layer is laid in the anti-cracking mortar layer, and the part of the anchor located outside the waterproof layer is connected to the anti-cracking mortar layer.

3. A silicon-graphene finishing layer system as claimed in claim 1, characterized in that: The anchoring piece is a heat-insulating nail.

4. A silicon-graphene finishing layer system as claimed in claim 1, characterized in that: The surface of the silicon-graphene layer is provided with separation strips for dividing the silicon-graphene finishing layer system into blocks.

5. A construction method of the silicon-graphene finishing layer system according to any one of claims 1 to 4, characterized in that: The following steps are involved: S1. Construction of waterproof layer: Apply two layers of waterproof mortar on the surface of the silicon graphene layer, fully hang the first mesh cloth layer between the two layers of waterproof mortar, and after the construction of the second waterproof mortar layer, pass the anchor through the waterproof layer and penetrate to the wall surface; S2. Construction of protective layer: applying anti-cracking mortar on the surface of the second waterproof mortar layer to form an anti-cracking mortar layer, and pressing the second mesh cloth layer into the anti-cracking mortar before it solidifies.

6. The construction method of the silicon-graphene finishing layer system according to claim 4, characterized in that: Before executing step S1, the base surface of the silicon graphene layer is processed, and the base surface processing includes the following steps: S01, grinding the weathered part of the surface of the silicon-graphene layer, filling the holes on the surface of the silicon-graphene layer, and repairing the joints and corners to ensure that the surface of the silicon-graphene layer is flat; S02, applying an interface agent on the surface of the silicon graphene layer.

7. The construction method of the silicon-graphene finishing layer system according to claim 6, characterized in that: When repairing the joints and corners on the surface of the silicon-graphene layer, a mesh cloth is laid at the repaired area.

8. The construction method of the silicon-graphene finishing layer system according to claim 4, characterized in that: Before constructing the waterproof layer, a plurality of partition strips are first constructed on the surface of the silicon graphene layer to divide it into a plurality of blocks.

9. The construction method of the silicon-graphene finishing layer system according to claim 4, characterized in that: After the construction of the protective layer is completed, the silicon-graphene finishing layer system is regularly sprayed with water for maintenance.

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