Antistatic polyurethane mortar floor

Abstract

The application relates to an anti-static polyurethane mortar floor, which comprises a base layer, a polyurethane mortar troweling bottom layer, a polyurethane mortar troweling leveling layer, a copper foil layer, a polyurethane mortar rolling middle layer and a polyurethane mortar anti-static self-leveling layer arranged in sequence from bottom to top above the base layer, and anchor grooves are formed in the base layer, the depth of the anchor grooves is twice the thickness of the polyurethane mortar troweling bottom layer, the polyurethane mortar troweling leveling layer, the copper foil layer, the polyurethane mortar rolling middle layer and the polyurethane mortar anti-static self-leveling layer, a polyurethane mortar anti-static layer is coated on the surface of the polyurethane mortar in a self-leveling mode, the copper foil layer forms a grounding belt, the floor has constant anti-static function, the polyurethane mortar rolling middle layer is arranged below the polyurethane mortar anti-static self-leveling layer, the problem that static electricity in the polyurethane mortar anti-static layer cannot be rapidly conducted to the copper foil layer and is prone to causing danger is solved, and the floor is safer.

Description

Technical Field

[0001] This utility model relates to the field of flooring, and in particular to an antistatic polyurethane mortar flooring. Background Technology

[0002] Flooring refers to the treatment of existing ground using specific materials and processes to achieve certain decorative and functional properties. Examples include epoxy self-leveling flooring, emery abrasion-resistant flooring, epoxy terrazzo flooring, cement-based terrazzo flooring, epoxy colored sand flooring, epoxy anti-static flooring, epoxy anti-slip flooring, polyurea anti-corrosion flooring, polyurethane flooring, silicone PU flooring, and concrete sealing and curing agent flooring, etc.

[0003] Polyurethane mortar flooring is generally a water-based polyurethane mortar flooring material. Its composite material has almost all the advantages of organic polymers and inorganic concrete, such as: anti-slip, resistance to high and low temperature environments, resistance to heavy mechanical loads and impacts, resistance to severe chemical corrosion, antibacterial and mildew-proof, low VOC, environmental protection and pollution-free.

[0004] Existing patent CN209099710U describes a polyurethane mortar antistatic flooring. Above a base layer, from bottom to top, it comprises a polyurethane mortar base coat, a polyurethane mortar intermediate coat, a copper foil layer, and a polyurethane mortar antistatic self-leveling layer. The copper foil layer is formed by vertically crisscrossing copper foil strips with a width of 8-12mm. Anchor grooves are provided on the base layer. This utility model's polyurethane mortar antistatic flooring uses a self-leveling method to coat the polyurethane mortar surface with a polyurethane mortar antistatic layer. The copper foil layer forms a grounding zone, giving the flooring a permanent antistatic function, a smooth surface, and excellent decorative effect. It is particularly suitable for operating rooms, IC manufacturing, IC-related assembly plants, flammable and explosive environments, and cleanrooms.

[0005] However, in existing antistatic flooring, the copper foil layer is in direct contact with the top layer of polyurethane mortar antistatic layer, and there is no conductive channel between the two. As a result, static electricity in the polyurethane mortar antistatic layer below, which does not have a copper foil layer, cannot be quickly conducted to the copper foil layer, which can easily lead to danger. To solve the above problems, an antistatic polyurethane mortar flooring is proposed. Utility Model Content

[0006] The purpose of this invention is to solve the problem that static electricity in the polyurethane mortar antistatic layer cannot be quickly conducted to the copper foil layer, which can easily lead to danger.

[0007] The present invention adopts the following technical solution:

[0008] An antistatic polyurethane mortar flooring includes a base layer. Above the base layer, from bottom to top, there are a polyurethane mortar trowel-coated underlayer, a polyurethane mortar scraper-coated leveling layer, a copper foil layer, a polyurethane mortar roller-coated intermediate layer, and a polyurethane mortar antistatic self-leveling layer. An anchoring groove is provided on the base layer. The depth of the anchoring groove is twice the thickness of the polyurethane mortar trowel-coated underlayer, polyurethane mortar scraper-coated leveling layer, copper foil layer, polyurethane mortar roller-coated intermediate layer, and polyurethane mortar antistatic self-leveling layer. The width of the anchoring groove is twice the thickness of the polyurethane mortar trowel-coated underlayer, polyurethane mortar scraper-coated leveling layer, copper foil layer, polyurethane mortar roller-coated intermediate layer, and polyurethane mortar antistatic self-leveling layer. The polyurethane mortar roller-coated intermediate layer is used to quickly conduct static electricity from the polyurethane mortar antistatic self-leveling layer to the copper foil layer.

[0009] Furthermore, there are multiple copper foil layers, laid in a grid pattern with intervals of 2m*2m and 1.5m*1.5m.

[0010] Furthermore, the thickness of the polyurethane mortar trowel-coated undercoat is 0.9-1.2 mm;

[0011] The purpose of setting up a polyurethane mortar trowel-coated underlayer is to seal the substrate and provide conditions for the adhesion of the polyurethane mortar leveling layer. Through numerous experiments, the inventors have found that when the thickness of the polyurethane mortar trowel-coated underlayer is less than 0.9mm, it is difficult to seal the substrate, which is detrimental to the subsequent construction of the polyurethane mortar leveling layer, the polyurethane mortar roller-coated intermediate layer, and the polyurethane mortar antistatic self-leveling layer, and also increases material consumption. When the thickness of the polyurethane mortar trowel-coated underlayer is greater than 1.2mm, the effect on the sealing and leveling of the substrate is not significant, but the cost increases. When the thickness of the polyurethane mortar trowel-coated underlayer is 0.9–1.2mm, it can seal the substrate and, at a lower cost, makes the final floor more impact-resistant and has greater adhesion strength, extending the service life of the floor.

[0012] Furthermore, the thickness of the polyurethane mortar leveling layer is 1.5-2.0 mm;

[0013] Furthermore, the preferred thickness of the polyurethane mortar leveling layer is as described above, which can ensure the adhesion strength between the polyurethane mortar leveling layer and the polyurethane mortar trowel base layer, ensure good construction of the polyurethane mortar trowel base layer, ensure that the base layer is completely sealed, ensure the flatness and aesthetics of the floor, and also ensure that the production cost of the floor is low.

[0014] Furthermore, the thickness of the intermediate layer of the polyurethane mortar roller coating is 0.8-1.2mm, which provides stable conductivity and ensures that static electricity can be quickly conducted away, preventing static electricity accumulation.

[0015] Furthermore, the thickness of the polyurethane mortar antistatic self-leveling layer is 2.0-2.4mm. When the polyurethane mortar antistatic self-leveling layer adopts the above thickness, it can ensure that the cost is low while also making the floor have the characteristics of pressure resistance, wear resistance, long service life, and heavy load bearing.

[0016] Furthermore, the anchoring groove is 8-10cm away from the wall and parallel to the wall. It is grooved in a mesh structure. The horizontal distance between adjacent anchoring grooves is 3-5m. The above-mentioned installation of the anchoring groove is conducive to the fixation of the entire floor. In actual use, anchoring grooves need to be opened at all free edge positions.

[0017] Furthermore, the surface of the base layer is roughened by sandblasting to enhance the adhesion between the base layer and the floor. The inventors found that when the surface roughness of the base layer is greater than 0.8 mm, the adhesion between the base layer and the floor is better. When the surface roughness is less than 1 mm, the base layer can be sealed by applying an appropriate amount of polyurethane mortar trowel as the base coat.

[0018] The beneficial effects of this utility model are:

[0019] Polyurethane mortar antistatic flooring uses a self-leveling process to coat a layer of polyurethane mortar with an antistatic layer. The copper foil layer forms a grounding zone, giving the flooring a permanent antistatic function. At the same time, a polyurethane mortar roller coating intermediate layer is set under the polyurethane mortar antistatic self-leveling layer to solve the problem that static electricity in the polyurethane mortar antistatic layer cannot be quickly conducted to the copper foil layer, which can easily cause danger, thus making the floor safer. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of an antistatic polyurethane mortar flooring according to a utility model.

[0021] In the diagram: 1. Base layer; 2. Polyurethane mortar trowel-coated undercoat; 3. Polyurethane mortar scraper-coated leveling layer; 4. Copper foil layer; 5. Polyurethane mortar roller-coated intermediate layer; 6. Polyurethane mortar antistatic self-leveling layer; 7. Anchor groove. Detailed Implementation

[0022] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0025] Example 1

[0026] This utility model provides an antistatic polyurethane mortar floor, including a base layer 1. Above the base layer 1, from bottom to top, there are polyurethane mortar trowel-coated underlayer 2, polyurethane mortar scraped leveling layer 3, copper foil layer 4, polyurethane mortar roller-coated intermediate layer 5, and polyurethane mortar antistatic self-leveling layer 6. An anchoring groove 7 is provided on the base layer 1. The depth of the anchoring groove 7 is twice the thickness of the polyurethane mortar trowel-coated underlayer 2, polyurethane mortar scraped leveling layer 3, copper foil layer 4, polyurethane mortar roller-coated intermediate layer 5, and polyurethane mortar antistatic self-leveling layer 6. The width of the anchoring groove 7 is twice the thickness of the polyurethane mortar trowel-coated underlayer 2, polyurethane mortar scraped leveling layer 3, copper foil layer 4, polyurethane mortar roller-coated intermediate layer 5, and polyurethane mortar antistatic self-leveling layer 6. The polyurethane mortar roller-coated intermediate layer 5 is used to quickly conduct the static electricity of the polyurethane mortar antistatic self-leveling layer 6 to the copper foil layer 4.

[0027] Furthermore, there are multiple copper foil layers 4, laid out in a grid pattern with spacing of 2m*2m and 1.5m*1.5m.

[0028] Furthermore, the thickness of the polyurethane mortar trowel-coated base layer 2 is 0.9-1.2 mm;

[0029] The purpose of setting up the polyurethane mortar trowel-coated base layer 2 is to seal the base layer 1 and provide conditions for the adhesion of the polyurethane mortar leveling layer 3. Through multiple experiments, the inventors have found that when the thickness of the polyurethane mortar trowel-coated base layer 2 is less than 0.9 mm, it is difficult to seal the base layer, which is detrimental to the subsequent construction of the polyurethane mortar leveling layer 3, the polyurethane mortar roller-coated intermediate layer 5, and the polyurethane mortar antistatic self-leveling layer 6, and will increase the amount of material used. When the thickness of the polyurethane mortar trowel-coated base layer 2 is greater than 1.2 mm, the sealing effect and leveling effect of the base layer 1 are not significant, but the cost increases. When the thickness of the polyurethane mortar trowel-coated base layer 2 is 0.9 to 1.2 mm, it can seal the base layer 1, and under the premise of lower cost, the final floor has greater impact resistance and adhesion strength, and extends the service life of the floor.

[0030] The polyurethane mortar trowel-coated base layer 2 uses polyurethane material with a dosage of 1.0-1.5 kg / m2;

[0031] Furthermore, the thickness of the polyurethane mortar leveling layer 3 is 1.5-2.0 mm;

[0032] Furthermore, the preferred thickness of the polyurethane mortar leveling layer 3 is as described above, which can ensure the adhesion strength between the polyurethane mortar leveling layer 3 and the polyurethane mortar trowel base layer 2, ensure the good construction of the polyurethane mortar trowel base layer 2, ensure that the base layer 1 is completely sealed, ensure the flatness and aesthetics of the floor, and also ensure that the production cost of the floor is low.

[0033] The polyurethane mortar leveling layer 3 uses polyurethane material with a dosage of 0.5-0.8 kg / m2;

[0034] Furthermore, the thickness of the intermediate layer 5 of the polyurethane mortar roller coating is 0.8-1.2mm, providing stable conductivity, ensuring that static electricity can be quickly conducted away and preventing static electricity accumulation. The intermediate layer 5 of the polyurethane mortar roller coating uses polyurethane material with a dosage of 0.10-0.15kg / m2.

[0035] Furthermore, the thickness of the polyurethane mortar antistatic self-leveling layer 6 is 2.0-2.4mm. When the polyurethane mortar antistatic self-leveling layer 6 adopts the above thickness, while ensuring its low cost, it can also make the floor have the characteristics of pressure resistance, wear resistance, long service life, and heavy load bearing. The polyurethane mortar antistatic self-leveling layer 6 uses polyurethane material with a dosage of 2.3-2.5kg / m2.

[0036] Furthermore, the anchoring groove 7 is 8-10cm away from the wall and parallel to the wall. It is grooved with a mesh structure. The horizontal distance between adjacent anchoring grooves 7 is 3-5m. The above-mentioned installation of the anchoring groove 7 is conducive to the fixation of the entire floor. In actual use, anchoring grooves 7 need to be opened at all free edge positions.

[0037] Furthermore, the surface of the base layer 1 is roughened by sandblasting in order to enhance the adhesion between the base layer and the floor. The inventors have found that when the surface roughness of the base layer 1 is treated to be greater than 0.8 mm, the adhesion between the base layer and the floor is better. When the surface roughness is less than 1 mm, the appropriate amount of polyurethane mortar trowel-coated base layer 2 is sufficient to seal the base layer 1.

[0038] The construction method for an antistatic polyurethane mortar floor is as follows:

[0039] Step 1: Sandblasting roughening treatment of the base layer 1 to treat concrete surface defects and avoid potential problems in subsequent construction;

[0040] Step 2: Open the anchoring groove 7 to embed the coating into the concrete substrate, forming an anchor bolt effect, buffering shrinkage stress, and preventing the coating from delaminating and cracking from the concrete base.

[0041] Step 3: Trowel apply GPU SL polyurethane mortar to form polyurethane mortar trowel base layer 2, which is used to seal the base layer 1;

[0042] Step 4: Apply GPU DL polyurethane mortar to form polyurethane mortar leveling layer 3, which is used to repair uneven parts that are still uneven after leveling the base layer.

[0043] Step 5: Lay conductive copper foil. Begin laying the copper foil two meters away from the wall, and lay it in a crisscross pattern to enhance conductivity and ensure that static electricity can be effectively conducted into the underground layer.

[0044] Step 6: Roll-coating GPU FAS-P polyurethane mortar to form the polyurethane mortar roller coating intermediate layer 5, which provides stable conductivity and ensures that static electricity can be quickly conducted away to prevent static electricity accumulation.

[0045] Step 7: Apply GPU FAS antistatic polyurethane mortar self-leveling topcoat to form polyurethane mortar antistatic self-leveling layer 6, which is used to receive static electricity and conduct it downwards;

[0046] Step 8: Defoaming treatment. Use a defoaming roller repeatedly to eliminate bubbles in the coating, prevent the formation of air pockets or holes, and make the coating surface smoother and more beautiful.

[0047] During processing, the prepared GPU SL polyurethane mortar material is quickly delivered to the construction area using a trolley. After being poured onto the ground as soon as possible, the construction workers use trowels or toothed rakes to spread the material evenly. If the concrete base layer is relatively rough and the concrete density is poor, the process should be adjusted in time to add a base coat to improve surface porosity and smoothness, ensure good base coat application, and ensure that the base layer is completely sealed. After the GPU SL material is mixed, it is continuously applied with a trowel without interruption. The material is evenly dispersed on the base layer with a trowel, and the edges are smoothed with a trowel. This step should be completed as quickly as possible to ensure good adhesion of the material.

[0048] After the GPU SL polyurethane mortar has cured, carefully check for bubbling, peeling, or other defects. Minor bubbles can be sanded down. Peeling and large bubbles require cutting and re-mixing the material for repair. If the peeling is due to a smooth base surface, it needs to be carefully sanded again, or even grouted. Check the anchor groove 7 and the original guide joint on the ground for any unfilled areas in the primer. Re-mix the material for repair. Uneven material dispersion can also cause bubbling and peeling. Topcoat application should be carried out within 48 hours. Primer that has been left for more than 48 hours needs to be ground with a grinder and vacuumed to increase the adhesion between subsequent coatings.

[0049] Due to the large-scale construction work, the already cured base coat surface is contaminated with dust. Before the top coat is applied, in accordance with the requirements for recoating polyurethane mortar materials: if the polyurethane mortar base coat has been cured for more than 48 hours, the original coating should be thoroughly sanded and vacuumed before the top coat is applied. Therefore, a second polyurethane mortar GPU DL undercoat is applied to ensure the adhesion between the coatings and the adhesion between the conductive copper foil and the substrate, and to avoid the risk of delamination.

[0050] For the selection of conductive copper foil specifications, the main bus line of the edge line generally adopts a specification of 0.08mm*10mm*50m, and the branch and cross lines adopt a specification of 0.05mm*10mm*50m. The laying spacing is 2m*2m or 1.5m*1.5m interval in a "well" pattern. This interval can be determined according to the actual situation.

[0051] When applying the conductive primer coating, first use a flat blade to evenly scrape the coating, and then use a wool roller to promptly roll it back evenly.

[0052] For surface layer application, a toothed rake is recommended to achieve better flatness. For smaller areas or areas with limited operating space, a trowel can be used. After the material is evenly applied, defoaming should be performed immediately.

[0053] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. The various components mentioned in this utility model are common technologies in the existing field. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An antistatic polyurethane mortar flooring, characterized in that, The system includes a base layer (1), and above the base layer (1), from bottom to top, it comprises a polyurethane mortar trowel-coated underlayer (2), a polyurethane mortar scraping leveling layer (3), a copper foil layer (4), a polyurethane mortar roller-coated intermediate layer (5), and a polyurethane mortar antistatic self-leveling layer (6). An anchoring groove (7) is provided on the base layer (1), and the depth of the anchoring groove (7) is equal to the depth of the polyurethane mortar trowel-coated underlayer (2), polyurethane mortar scraping leveling layer (3), copper foil layer (4), and polyurethane mortar antistatic self-leveling layer (6). The thickness of the mortar roller coating intermediate layer (5) and the polyurethane mortar antistatic self-leveling layer (6) is twice that of the anchoring groove (7). The width of the anchoring groove (7) is twice the thickness of the polyurethane mortar trowel coating bottom layer (2), the polyurethane mortar scraping leveling layer (3), the copper foil layer (4), the polyurethane mortar roller coating intermediate layer (5), and the polyurethane mortar antistatic self-leveling layer (6). The polyurethane mortar roller coating intermediate layer (5) is used to quickly conduct the static electricity of the polyurethane mortar antistatic self-leveling layer (6) to the copper foil layer (4).

2. The antistatic polyurethane mortar flooring according to claim 1, characterized in that, The copper foil layer (4) consists of multiple layers arranged in a grid pattern, with a distance of 1.5-2m between adjacent copper foil layers (4).

3. The antistatic polyurethane mortar flooring according to claim 2, characterized in that, The thickness of the polyurethane mortar trowel base coat (2) is 0.9-1.2 mm.

4. The antistatic polyurethane mortar flooring according to claim 3, characterized in that, The thickness of the polyurethane mortar leveling layer (3) is 1.5-2.0 mm.

5. The antistatic polyurethane mortar flooring according to claim 4, characterized in that, The thickness of the intermediate layer (5) of the polyurethane mortar roller coating is 0.8-1.2 mm.

6. The antistatic polyurethane mortar flooring according to claim 5, characterized in that, The thickness of the polyurethane mortar antistatic self-leveling layer (6) is 2.0-2.4 mm.

7. The antistatic polyurethane mortar flooring according to claim 6, characterized in that, The anchoring groove (7) is 8-10cm away from the wall and parallel to the wall. It is slotted with a mesh structure and the horizontal distance between adjacent anchoring grooves (7) is 3-5m.

8. The antistatic polyurethane mortar flooring according to claim 7, characterized in that, The surface of the base layer (1) is roughened by sandblasting, and the surface roughness is 0.8 to 1 mm.

Images