A floor paint for a robotic warehouse and its application

Abstract

The present invention discloses a floor paint for a robot warehouse and its application. The floor paint includes a primer and a topcoat. The preparation raw materials of the topcoat include components A, B, C, and D. By weight, the preparation raw materials of component A include 70 - 100 parts of polyol, 0.1 - 2 parts of wetting and leveling agent, 0.1 - 2 parts of defoaming agent, 1 - 10 parts of rheological aid, 0.1 - 2 parts of dispersion aid, and 10 - 20 parts of deionized water. Component B is 50 - 90 parts of curing agent. Component C includes 250 - 400 parts of filler, 1 - 10 parts of pH regulator, and 20 - 50 parts of binder. Component D includes 5 -

Description

Technical Field

[0001] The present invention belongs to the technical field of floor paint preparation, and its classification number is C09D175 / 04. Specifically, it relates to a wear-resistant floor paint for a robot warehouse and a preparation method thereof. Background Art

[0002] Floor paint is a mixture of coatings that securely covers surfaces for protection, decoration, marking, and other special purposes. Currently, epoxy and polyurethane floor coatings are the main types of floor coatings. Epoxy floor paint has high hardness but insufficient toughness and poor weather resistance, limiting its application. Polyurethane floor materials are primarily solvent-based and water-based. Solvent-based polyurethane floor paint has a high VOC content and a strong odor, making its production, storage, and transportation dangerous and potentially harmful to the human body. Water-based polyurethane floor paint often suffers from poor physical and chemical resistance and high costs. To improve the wear resistance of water-based polyurethane floor paint, wear-resistant aggregates may be added, but these can lead to excessive surface roughness in the paint film, allowing highly adhesive contaminants to easily embed themselves into the paint surface, making it difficult to clean. Alternatively, wear resistance can be improved by increasing the thickness and number of topcoat and primer layers, but this is costly. Robotic warehouses are prone to high levels of dust, and floor paints used in robotic warehouses require high wear resistance.

[0003] Chinese patent CN104693926B discloses a method for preparing a water-based floor paint and a construction process for a water-based floor. Although the water-based floor paint prepared by using a water-based acrylic resin has good water resistance and weather resistance, it does not solve the problem of poor chemical resistance of water-based polyurethane floor paint.

[0004] Chinese patent CN103992724B discloses a water-based antifouling and wear-resistant floor paint modified with nanomaterials. The wear resistance of the floor paint is improved by adding nanofillers, but its wear resistance is as high as 0.019g, and the wear resistance needs to be strengthened. Summary of the Invention

[0005] In order to solve the above problems, the first aspect of the present invention provides a floor paint for a robot warehouse, wherein the floor paint includes a primer and a topcoat, and the raw materials for preparing the topcoat include components A, B, C, and D. In parts by weight, the raw materials for preparing the A component include 70-100 parts of polyol, 0.1-2 parts of wetting and leveling agent, 0.1-2 parts of defoaming agent, 1-10 parts of rheological additive, 0.1-2 parts of dispersing additive, and 10-20 parts of deionized water. The B component is 50-90 parts of curing agent, the C component includes 250-400 parts of filler, 1-10 parts of pH regulator, and 20-50 parts of binder. The D component includes 5-20 parts of pigment and 0.1-2 parts of dispersing additive.

[0006] Further preferably, the raw materials for preparing the topcoat include components A, B, C, and D. By weight, the raw materials for component A include 75-95 parts of polyol, 0.1-1 part of wetting and leveling agent, 0.1-1 part of defoaming agent, 1-5 parts of rheology aid, 0.1-1 part of dispersing aid, and 10-20 parts of deionized water; component B is 60-80 parts of curing agent; component C includes 280-340 parts of filler, 1-10 parts of pH regulator, and 30-50 parts of binder; and component D includes 5-15 parts of pigment and 0.1-1 part of dispersing aid.

[0007] Further preferably, the raw materials for preparing the topcoat include components A, B, C, and D. By weight, the raw materials for component A include 85 parts of polyol, 0.3 part of wetting and leveling agent, 0.5 part of defoaming agent, 3 parts of rheology aid, 0.2 part of dispersing aid, and 15 parts of deionized water; component B is 70 parts of curing agent; component C includes 310 parts of filler, 5 parts of pH regulator, and 40 parts of binder; and component D includes 10 parts of pigment and 0.4 part of dispersing aid.

[0008] Preferably, the raw materials for preparing the primer include component E and component F. Component E includes polyol, deionized water, wetting and leveling agent, defoaming agent, rheology aid, and adhesion promoter, and component F is a curing agent.

[0009] Further preferably, the raw materials for preparing the primer include component E and component F. By weight, component A includes 75-95 parts of polyol, 10-20 parts of deionized water, 0.1-1 part of wetting and leveling agent, 0.1-1 part of defoaming agent, 1-5 parts of rheology aid, and 0.1-1 part of adhesion promoter, and component B is 40-60 parts of curing agent.

[0010] Further preferably, the raw materials for preparing the primer include component E and component F. By weight, component E includes 85 parts of polyol, 15 parts of deionized water, 0.5 part of wetting and leveling agent, 0.3 part of defoaming agent, 2 parts of rheology aid, and 0.6 part of adhesion promoter, and component F is 50 parts of curing agent.

[0011] Preferably, the polyol in component A and component E has a functionality of 1-5 and a hydroxyl value of 150-200 mg KOH / g.

[0012] Further preferably, the polyol in component A and component E has a functionality of 2-4 and a hydroxyl value of 160-195 mg KOH / g.

[0013] Further preferably, the polyol in component A and component E has a functionality of 3.5 and a hydroxyl value of 165-190 mg KOH / g.

[0014] Preferably, the curing agents in the primer and the topcoat are both isocyanates, and the mass content of isocyanate groups in the isocyanates is 28.0 - 34.0%.

[0015] More preferably, the curing agents in the primer and the topcoat are both polymeric isocyanates, and the mass content of isocyanate groups in the isocyanates is 29.0 - 33.0%.

[0016] Even more preferably, the curing agents in the primer and the topcoat are both polymeric isocyanates, and the mass content of isocyanate groups in the isocyanates is 30.5 - 32.0%.

[0017] Preferably, the mass ratio between the polyol and the curing agent in the topcoat is (75 - 95):(60 - 80).

[0018] More preferably, the mass ratio between the polyol and the curing agent in the topcoat is (80 - 90):(65 - 75).

[0019] Even more preferably, the mass ratio between the polyol and the curing agent in the topcoat is 85:60.

[0020] Preferably, the component A further includes 0.1 - 3 parts of a hardening and wear - resistant agent.

[0021] More preferably, the component A further includes 0.1 - 1 part of a hardening and wear - resistant agent.

[0022] Even more preferably, the component A further includes 0.5 part of a hardening and wear - resistant agent.

[0023] Even more preferably, the hardening and wear - resistant agent is a polysiloxane compound.

[0024] Preferably, the filler is at least one of quartz sand, talcum powder, calcium carbonate, artificial corundum, kaolin, and barium sulfate powder.

[0025] Preferably, the filler is quartz sand, artificial corundum, and calcium carbonate, and the mass ratio of the three is (1 - 1.5):(1 - 1.5):(0.5 - 1.2).

[0026] More preferably, the filler is quartz sand, artificial corundum, and calcium carbonate, and the mass ratio of the three is (1 - 1.2):(1 - 1.2):(0.8 - 1.0).

[0027] Even more preferably, the filler is quartz sand, artificial corundum, and calcium carbonate, and the mass ratio of the three is 1.1:1.1:0.9.

[0028] Preferably, the average particle size of the quartz sand is 30-90 mesh, the average particle size of the artificial corundum is 60-100 mesh, and the average particle size of the calcium carbonate is 1000-3000 mesh.

[0029] More preferably, the average particle size of the quartz sand is 30-90 mesh, the average particle size of the artificial corundum is 60-90 mesh, and the average particle size of the calcium carbonate is 1500-2500 mesh.

[0030] More preferably, the average particle size of the quartz sand is 40-80 mesh, the average particle size of the artificial corundum is 80 mesh, and the average particle size of the calcium carbonate is 2000 mesh.

[0031] The present invention also provides a method for preparing a floor paint for a robot warehouse, comprising the following steps:

[0032] (1) Preparation of the primer: Mix the polyol, deionized water, wetting and leveling agent, defoaming agent, rheology aid, and adhesion promoter in the E component by weight and stir to form the E component, and then mix the E component and the F component in a certain weight ratio to obtain the primer; (2) Preparation of the topcoat: Mix the polyol, wetting and leveling agent, defoaming agent, rheology aid, dispersion aid, and deionized water in the A component by weight to obtain the A component, then mix the filler, binder, and pH regulator in the C component by weight to obtain the C component, then mix the pigment, deionized water, and dispersion aid in the D component by weight to obtain the D component, and finally mix the A, B, C, and D components in a certain weight ratio to obtain the topcoat.

[0033] The second aspect of the present invention discloses the application of a floor paint for a robot warehouse in a robot warehouse.

[0034] More preferably, the present invention also provides a method for using a floor paint for a robot warehouse, comprising the following steps: First, brush or roll the primer on the floor base surface with a thickness of 0.1-1.0 mm, and after the primer is dried, apply a topcoat with a thickness of 1.0-5.0 mm.

[0035] The higher the functionality and hydroxyl value of the polyol compound, the greater the compressive strength of the coating can be enhanced. However, its flexural strength will decrease significantly. In this application, the functionality of the bio-based modified polyol (soft segment) is limited to 2-4, and the hydroxyl value is 160-195 mg KOH / g. It reacts with isocyanate (hard segment) to form a polymer structure with a certain crosslinking density. While ensuring good compressive strength of the coating, it also improves its flexural strength, endowing the coating with excellent mechanical properties and chemical resistance. At the same time, the isocyanate is limited to a polymeric isocyanate, and the mass content of isocyanate is 29.0-33.0%, making the polymer structure have a higher crosslinking density and improving the wear resistance of the paint film. On this basis, the weight ratio between the two is limited to (75-95):(60-80) to avoid the problem that excessive isocyanate generates too much urea group, resulting in a decrease in the impact resistance of the paint film.

[0036] To improve the wear resistance of the paint film, this application adds artificial corundum and quartz sand with larger particle sizes. Although the wear resistance of both is excellent, due to the formation of certain voids during the formation of the paint film, it will instead cause a decrease in wear resistance. Further, calcium carbonate with an average particle size of 2000 mesh is added, and the mass ratio of the three is limited to (1-1.5):(1-1.5):(0.5-1.2). It not only fills the existing voids, but also, under the combined action of VAE latex powder, the compatibility between the filler and the polymer in the system is better. However, due to the relatively large particle sizes of artificial corundum and quartz sand, the surface roughness of the paint film is relatively high, and dust may be embedded in the paint film, making it difficult to clean the surface of the paint film. Therefore, while ensuring the wear resistance of the paint film, a polysiloxane compound is further added. This polysiloxane compound can form an organosilicon film on the surface of the paint film, which can not only solve the problem of difficult cleaning caused by dust, but also improve the wear resistance of the paint film to a certain extent.

[0037] Beneficial effects:

[0038] (1) Compared with the system of primer, intermediate coat, top coat, and finish varnish in the existing floor coatings, the floor paint for robot warehouses prepared in this invention only needs two layers to achieve a floor paint with excellent comprehensive performance, greatly reducing the construction complexity, shortening the construction time, and reducing the cost.

[0039] (2) The floor paint for robot warehouses prepared in this invention is easy to clean, and its wear resistance is as low as 0.012 g, and it can be applied to robot warehouses.

[0040] (3) The floor paint for robot warehouses prepared in this invention has excellent chemical resistance and mechanical properties, and at the same time also has a certain bonding strength and anti-slip property, and its salt water resistance is excellent. Examples

[0041] Example 1

[0042] A floor paint for a robot warehouse, the floor paint comprising a primer and a topcoat, the preparation raw materials of the topcoat including components A, B, C, and D. By weight, the preparation raw materials of component A include 85 parts of a polyol, 0.3 part of a wetting and leveling agent, 0.5 part of an antifoaming agent, 3 parts of a rheology aid, 0.2 part of a dispersing aid, 0.5 part of a hardening and wear-resistant agent, and 15 parts of deionized water; component B is 70 parts of a curing agent; component C includes 310 parts of a filler, 5 parts of a pH regulator, and 40 parts of a binder; and component D includes 10 parts of a pigment and 0.4 part of a dispersing aid.

[0043] The preparation raw materials of the primer include components E and F. By weight, component E includes 85 parts of a polyol, 15 parts of deionized water, 0.5 part of a wetting and leveling agent, 0.3 part of an antifoaming agent, 2 parts of a rheology aid, and 0.6 part of an adhesion promoter; and component F is 50 parts of a curing agent.

[0044] The polyol in component A and component E is a bio-based modified polyol with a functionality of 3.5 and a hydroxyl value of 165 - 190 mg KOH / g, purchased from Guangzhou Xinya Trading Co., Ltd., with the model number 8150.

[0045] The curing agents in both the primer and the topcoat are polymeric isocyanates, and the mass content of isocyanate groups in the isocyanate is 30.5 - 32.0%, purchased from Wanhua, with the model number PM200.

[0046] The mass ratio between the bio-based modified polyol and the isocyanate is 85:70.

[0047] The wetting and leveling agents in both the primer and the topcoat are alkynediol polyether surfactants, purchased from Tianjin Hepfilo New Materials Co., Ltd., with the model number FS - 640.

[0048] The antifoaming agents in both the primer and the topcoat are surfactants containing an alkynediol chemical structure, with the model number surfynol 104A, purchased from Air Products Chemicals.

[0049] The rheology aids in both the primer and the topcoat are hydrophobically modified polyurethanes, purchased from BASF, with the model number RheovisPU 1341.

[0050] The dispersing aids in both the primer and the topcoat are polyether silicone copolymers, purchased from BYK Chemie, with the model number BYK - 180.

[0051] The hardening and wear-resistant agent is a polysiloxane compound, purchased from Dongguan Aishike Chemical Co., Ltd., with the model number ASK - 300.

[0052] The filler is quartz sand, artificial corundum and calcium carbonate, and the mass ratio of the three is 1.1:1.1:0.9. The average particle size of the quartz sand is 40-80 mesh, the average particle size of the artificial corundum is 80 mesh, and the average particle size of the calcium carbonate is 2000 mesh. The quartz sand is purchased from Changxing Zhongjia Non-Metallic Materials Co., Ltd., the artificial corundum is purchased from Gongyi Fengtai Refractory Abrasives Co., Ltd., and the calcium carbonate is purchased from Changxing Qingsheng Calcium Industry Co., Ltd.

[0053] The pH regulator is highly efficient composite alkali, purchased from Guangzhou Guorun Chemical Co., Ltd.

[0054] The binder is vinyl acetate emulsion, purchased from Langfang Feitai New Material Technology Co., Ltd., and the model is 003.

[0055] The pigment is titanium dioxide, the model is R960, and it is purchased from DuPont Chemours.

[0056] The adhesion promoter is vinyl silane coupling agent, purchased from Shandong Shuntai New Material Co., Ltd., and the model is A-151.

[0057] This embodiment also provides a preparation method of floor paint for a robot warehouse, including the following steps:

[0058] (1) Preparation of primer: Mix polyol, deionized water, wetting and leveling agent, defoaming agent, rheology aid and adhesion promoter in component E by weight and stir to make component E, and then mix component E and component F in a weight ratio of 10:6 to obtain the primer; (2) Preparation of topcoat: Mix polyol, wetting and leveling agent, defoaming agent, rheology aid, dispersion aid and deionized water in component A by weight to obtain component A. Then mix the filler, binder and pH regulator in component C by weight to obtain component C. Then mix the pigment, deionized water and dispersion aid in component D by weight to obtain component D. Finally, mix components A, B, C and D in a weight ratio of 10:9:10:0.5 to obtain the topcoat.

[0059] The second aspect of this embodiment discloses the application of the floor paint for a robot warehouse in the robot warehouse.

[0060] This embodiment also provides a usage method of the floor paint for a robot warehouse, including the following steps: First, brush the primer on the floor base surface with a thickness of 0.4 mm. After the primer dries, apply a topcoat with a thickness of 4 mm.

[0061] Example 2

[0062] A floor paint for a robotic warehouse, the floor paint comprising a primer and a topcoat. The preparation raw materials of the topcoat include components A, B, C, and D. By weight, the preparation raw materials of component A include 75 parts of polyol, 0.1 part of wetting and leveling agent, 0.1 part of defoaming agent, 3 parts of rheology aid, 0.2 part of dispersing aid, 0.1 part of hardening and wear-resistant agent, and 15 parts of deionized water. Component B is 60 parts of curing agent. Component C includes 280 parts of filler, 5 parts of pH regulator, and 40 parts of binder. Component D includes 10 parts of pigment and 0.4 part of dispersing aid.

[0063] The preparation raw materials of the primer include component E and component F. By weight, component E includes 85 parts of polyol, 15 parts of deionized water, 0.5 part of wetting and leveling agent, 0.3 part of defoaming agent, 2 parts of rheology aid, and 0.6 part of adhesion promoter. Component F is 50 parts of curing agent.

[0064] The polyol in component A and component E is a bio-based modified polyol with a functionality of 3.5 and a hydroxyl value of 165 - 190 mg KOH / g, purchased from Guangzhou Xinya Trading Co., Ltd., with the model number 8150.

[0065] The curing agents in both the primer and the topcoat are polymeric isocyanates, and the mass content of isocyanate groups in the isocyanate is 30.5 - 32.0%, purchased from Wanhua, with the model number PM200.

[0066] The mass ratio between the bio-based modified polyol and the isocyanate is 75:60.

[0067] The wetting and leveling agent in both the primer and the topcoat is an alkynediol polyether surfactant, purchased from Tianjin Hepfilo New Materials Co., Ltd., with the model number FS - 640.

[0068] The defoaming agent in both the primer and the topcoat is a surfactant containing an alkynediol chemical structure, with the model number surfynol 104A, purchased from Air Products Chemicals.

[0069] The rheology aid in both the primer and the topcoat is a hydrophobic modified polyurethane, purchased from BASF, with the model number RheovisPU 1341.

[0070] The dispersing aid in both the primer and the topcoat is a polyether silicone copolymer, purchased from BYK Chemie, with the model number BYK - 180.

[0071] The hardening and wear-resistant agent is a polysiloxane compound, purchased from Dongguan Aishike Chemical Co., Ltd., with the model number ASK - 300.

[0072] The filler is quartz sand, artificial corundum and calcium carbonate, and the mass ratio of the three is 1.1:1.1:0.9. The average particle size of the quartz sand is 40 - 80 mesh, the average particle size of the artificial corundum is 80 mesh, and the average particle size of the calcium carbonate is 2000 mesh. The quartz sand is purchased from Changxing Zhongjia Non-Metallic Materials Co., Ltd., the artificial corundum is purchased from Gongyi Fengtai Refractory Abrasives Co., Ltd., and the calcium carbonate is purchased from Changxing Qingsheng Calcium Industry Co., Ltd.

[0073] The pH regulator is high-efficiency compound alkali, purchased from Guangzhou Guorun Chemistry Co., Ltd.

[0074] The binder is vinyl acetate emulsion, purchased from Langfang Feitai New Materials Technology Co., Ltd., with the model number 003.

[0075] The pigment is titanium dioxide, with the model number R960, purchased from DuPont Chemours.

[0076] The adhesion promoter is vinyl silane coupling agent, purchased from Shandong Shuntai New Materials Co., Ltd., with the model number A - 151.

[0077] This embodiment also provides a preparation method for the floor paint used in a robot warehouse, including the following steps:

[0078] (1) Preparation of the primer: Mix the polyol, deionized water, wetting and leveling agent, defoamer, rheology aid and adhesion promoter in component E by weight and stir to make component E, and then mix component E and component F in a weight ratio of 10:6 to obtain the primer; (2) Preparation of the topcoat: Mix the polyol, wetting and leveling agent, defoamer, rheology aid, dispersion aid and deionized water in component A by weight to obtain component A. Then mix the filler, binder and pH regulator in component C by weight to obtain component C. Then mix the pigment, deionized water and dispersion aid in component D by weight to obtain component D. Finally, mix components A, B, C and D in a weight ratio of 10:9:10:0.5 to obtain the topcoat.

[0079] The second aspect of this embodiment discloses the application of the floor paint used in a robot warehouse in the robot warehouse.

[0080] This embodiment also provides a usage method for the floor paint used in a robot warehouse, including the following steps: First, brush the primer on the floor base surface with a thickness of 0.4 mm. After the primer dries, apply a topcoat with a thickness of 4 mm.

[0081] Example 3

[0082] A floor paint for a robot warehouse. The floor paint includes a primer and a topcoat. The raw materials for preparing the topcoat include components A, B, C, and D. By weight, the raw materials for component A include 95 parts of polyol, 0.3 parts of wetting and leveling agent, 0.5 parts of defoaming agent, 3 parts of rheology aid, 0.2 parts of dispersing aid, 0.8 parts of hardening and wear-resistant agent, and 15 parts of deionized water. Component B is 80 parts of curing agent. Component C includes 340 parts of filler, 5 parts of pH regulator, and 50 parts of binder. Component D includes 10 parts of pigment and 0.4 parts of dispersing aid.

[0083] The raw materials for preparing the primer include component E and component F. By weight, component E includes 85 parts of polyol, 15 parts of deionized water, 0.5 parts of wetting and leveling agent, 0.3 parts of defoaming agent, 2 parts of rheology aid, and 0.6 parts of adhesion promoter. Component F is 50 parts of curing agent.

[0084] The polyol in component A and component E is a bio-based modified polyol with a functionality of 3.5 and a hydroxyl value of 165 - 190 mg KOH / g, purchased from Guangzhou Xinya Trading Co., Ltd., with the model number 8150.

[0085] The curing agents in the primer and the topcoat are both polymeric isocyanates, and the mass content of isocyanate groups in the isocyanate is 30.5 - 32.0%, purchased from Wanhua, with the model number PM200.

[0086] The mass ratio between the bio-based modified polyol and the isocyanate is 95:80.

[0087] The wetting and leveling agents in the primer and the topcoat are alkynediol polyether surfactants, purchased from Tianjin Hepu Feile New Materials Co., Ltd., with the model number FS - 640.

[0088] The defoaming agents in the primer and the topcoat are surfactants containing an alkynediol chemical structure, with the model number surfynol 104A, purchased from Air Products Chemicals.

[0089] The rheology aids in the primer and the topcoat are hydrophobically modified polyurethanes, purchased from BASF, with the model number RheovisPU 1341.

[0090] The dispersing aids in the primer and the topcoat are polyether siloxane copolymers, purchased from BYK Chemie, with the model number BYK - 180.

[0091] The hardening and wear-resistant agent is a polysiloxane compound, purchased from Dongguan Aishike Chemical Co., Ltd., with the model number ASK - 300.

[0092] The filler is quartz sand, artificial corundum and calcium carbonate, and the mass ratio of the three is 1.1:1.1:0.9. The average particle size of the quartz sand is 40-80 mesh, the average particle size of the artificial corundum is 80 mesh, and the average particle size of the calcium carbonate is 2000 mesh. The quartz sand is purchased from Changxing Zhongjia Non-metallic Materials Co., Ltd., the artificial corundum is purchased from Gongyi Fengtai Refractory Abrasives Co., Ltd., and the calcium carbonate is purchased from Changxing Qingsheng Calcium Industry Co., Ltd.

[0093] The pH regulator is highly efficient composite alkali, purchased from Guangzhou Guorun Chemical Co., Ltd.

[0094] The binder is vinyl acetate emulsion, purchased from Langfang Feitai New Material Technology Co., Ltd., and the model is 003.

[0095] The pigment is titanium dioxide, with the model R960, purchased from DuPont Chemours.

[0096] The adhesion promoter is vinyl silane coupling agent, purchased from Shandong Shuntai New Material Co., Ltd., and the model is A-151.

[0097] This embodiment also provides a preparation method for the floor paint used in the robot warehouse, including the following steps:

[0098] (1) Preparation of the primer: Mix the polyol, deionized water, wetting and leveling agent, defoamer, rheology aid and adhesion promoter in component E by weight and stir to prepare component E, and then mix component E and component F in a weight ratio of 10:6 to obtain the primer; (2) Preparation of the topcoat: Mix the polyol, wetting and leveling agent, defoamer, rheology aid, dispersion aid and deionized water in component A by weight to obtain component A. Then, mix the filler, binder and pH regulator in component C by weight to obtain component C. Then, mix the pigment, deionized water and dispersion aid in component D by weight to obtain component D. Finally, mix components A, B, C and D in a weight ratio of 10:9:10:0.5 to obtain the topcoat.

[0099] The second aspect of this embodiment discloses the application of the floor paint for the robot warehouse in the robot warehouse.

[0100] This embodiment also provides a usage method for the floor paint used in the robot warehouse, including the following steps: First, brush the primer on the floor base surface with a thickness of 0.4 mm. After the primer dries, apply a topcoat with a thickness of 4 mm.

[0101] Comparative Example 1

[0102] The curing agent in the primer and topcoat, which is polymeric isocyanate, is changed to polyol-modified isocyanate, with the mass content of isocyanate group being 29.0%, purchased from Wanhua Chemical, model number WANNATE 8001, and the rest is the same as in Example 1.

[0103] Comparative Example 2

[0104] A floor paint for a robot warehouse, the floor paint includes a primer and a topcoat, and the raw materials for preparing the topcoat include components A, B, C, and D. By weight, the raw materials for component A include 85 parts of polyol, 0.3 parts of wetting and leveling agent, 0.5 parts of defoaming agent, 3 parts of rheology aid, 0.2 parts of dispersing aid, and 15 parts of deionized water. Component B is 70 parts of curing agent. Component C includes 400 parts of filler, 5 parts of pH regulator, and 40 parts of binder. Component D includes 10 parts of pigment and 0.4 parts of dispersing aid.

[0105] The raw materials for preparing the primer include components E and F. By weight, component E includes 85 parts of polyol, 15 parts of deionized water, 0.5 parts of wetting and leveling agent, 0.3 parts of defoaming agent, 2 parts of rheology aid, and 0.6 parts of adhesion promoter. Component F is 50 parts of curing agent.

[0106] The polyol in component A and component E is bio-based modified polyol, with a functionality of 3.5 and a hydroxyl value of 165 - 190 mg KOH / g, purchased from Guangzhou Xinya Trading Co., Ltd., model number 8150.

[0107] The curing agents in the primer and topcoat are both polymeric isocyanates, and the mass content of isocyanate group in the isocyanate is 30.5 - 32.0%, purchased from Wanhua, model number PM200.

[0108] The mass ratio between the bio-based modified polyol and the isocyanate is 85:70.

[0109] The wetting and leveling agent in the primer and topcoat is an alkynediol polyether surfactant, purchased from Tianjin Hepfilo New Materials Co., Ltd., model number FS - 640.

[0110] The defoaming agent in the primer and topcoat is a surfactant containing an alkynediol chemical structure, model number surfynol 104A, purchased from Air Products Chemicals.

[0111] The rheology aid in the primer and topcoat is a hydrophobically modified polyurethane, purchased from BASF, model number RheovisPU 1341.

[0112] The dispersing aid in the primer and topcoat is a polyether silicone copolymer, purchased from BYK Chemie, model number BYK - 180.

[0113] The filler is quartz sand, artificial corundum and calcium carbonate, and the mass ratio of the three is 1.1:1.1:0.9. The average particle size of the quartz sand is 40-80 mesh, the artificial corundum is 80 mesh, and the calcium carbonate is 2000 mesh. The quartz sand is purchased from Changxing Zhongjia Non-metallic Materials Co., Ltd., the artificial corundum is purchased from Gongyi Fengtai Refractory Abrasives Co., Ltd., and the calcium carbonate is purchased from Changxing Qingsheng Calcium Industry Co., Ltd.

[0114] The pH regulator is high-efficiency compound alkali, purchased from Guangzhou Guorun Chemical Co., Ltd.

[0115] The binder is vinyl acetate emulsion, purchased from Langfang Feitai New Material Technology Co., Ltd., and the model is 003.

[0116] The pigment is titanium dioxide, the model is R960, and it is purchased from DuPont Chemours.

[0117] The adhesion promoter is vinyl silane coupling agent, purchased from Shandong Shuntai New Material Co., Ltd., and the model is A-151.

[0118] This embodiment also provides a preparation method of floor paint for a robot warehouse, including the following steps:

[0119] (1) Preparation of primer: Mix the polyol, deionized water, wetting and leveling agent, defoaming agent, rheological aid and adhesion promoter in component E by weight and stir to form component E, and then mix component E and component F in a weight ratio of 10:6 to obtain the primer; (2) Preparation of topcoat: Mix the polyol, wetting and leveling agent, defoaming agent, rheological aid, dispersion aid and deionized water in component A by weight to obtain component A, then mix the filler, binder and pH regulator in component C by weight to obtain component C, then mix the pigment, deionized water and dispersion aid in component D by weight to obtain component D, and finally mix components A, B, C and D in a weight ratio of 10:9:10:0.5 to obtain the topcoat.

[0120] The second aspect of this embodiment discloses the application of the floor paint for a robot warehouse in a robot warehouse.

[0121] This embodiment also provides a usage method of the floor paint for a robot warehouse, including the following steps: First, brush the primer on the floor base surface with a thickness of 0.4 mm. After the primer dries, apply a topcoat with a thickness of 4 mm.

[0122] Comparative Example 3

[0123] Change the filler to quartz sand, artificial corundum and calcium carbonate, and change the mass ratio of the three to 1.1:1.1:0.5. Change the average particle size of calcium carbonate to 1250 mesh. The calcium carbonate is purchased from Shanggao Jusilicon Mining Co., Ltd., and the rest is the same as in Example 1.

[0124] Comparative Example 4

[0125] Change the filler to quartz sand, artificial corundum and calcium carbonate, and change the mass ratio of the three to 0.9:0.9:0.5. The rest is the same as in Example 1.

[0126] Performance Evaluation

[0127] (1) Perform performance tests on the floor paint for the robot warehouse prepared in Example 1. The test results are shown in Table 1. When testing chemical resistance and salt water resistance, if there are no phenomena such as bubbles, cracks, peeling, and discoloration, it is evaluated as qualified; otherwise, it is unqualified. (Supplement: When testing chemical resistance, if there are no phenomena such as bubbles, cracks, and peeling, but there is slight discoloration, it can also be judged as qualified). When testing impact resistance, if there are no phenomena such as bubbles, cracks, peeling, and discoloration, it is qualified; otherwise, it is unqualified.

[0128] (2) Test the wear resistance of Examples 2-3 and Comparative Examples 1-4. The test standards are shown in Table 1, and the test results are shown in Table 2.

[0129] Table 1

[0130]

[0131]

[0132] Table 2

[0133]

[0134] Compared with Example 1, in Comparative Example 1, the type of isocyanate is changed to a polyol-modified isocyanate, and the content of its isocyanate group is also relatively reduced, which will reduce the crosslinking density of the polymer in the system and the wear resistance of the paint film. In Comparative Example 2, no polysiloxane compound is added, and an organic silicon film cannot be formed on the surface of the paint film, which will also lead to a significant reduction in wear resistance. In Comparative Example 3, the particle size of calcium carbonate is increased and its content is reduced at the same time, but the voids between the fillers cannot be filled, and the wear resistance will decrease. In Comparative Example 4, the proportion of the filler is changed, and its wear resistance will also decrease.

Claims

1. A floor paint for a robotic warehouse, characterized in that, The floor paint includes a primer and a topcoat. The preparation raw materials of the topcoat include components A, B, C, and D. By weight, the preparation raw materials of component A include 85 parts of polyol, 0.3 parts of wetting and leveling agent, 0.5 parts of defoaming agent, 3 parts of rheology aid, 0.2 parts of dispersing aid, 0.5 parts of hardening and wear-resistant agent, and 15 parts of deionized water. Component B is 70 parts of curing agent. Component C includes 310 parts of filler, 5 parts of pH regulator, and 40 parts of binder. Component D includes 10 parts of pigment and 0.4 parts of dispersing aid; The preparation raw materials of the primer include component E and component F. By weight, component E includes 85 parts of polyol, 15 parts of deionized water, 0.5 parts of wetting and leveling agent, 0.3 parts of defoaming agent, 2 parts of rheology aid, and 0.6 parts of adhesion promoter. Component F is 50 parts of curing agent; The polyol in component A and component E is a bio-based modified polyol with a functionality of 3.5 and a hydroxyl value of 165 - 190 mg KOH / g; The curing agents in the primer and the topcoat are both polymeric isocyanates, and the mass content of isocyanate groups in the polymeric isocyanates is 30.5 - 32.0%; The mass ratio between the bio-based modified polyol and the polymeric isocyanate is 85:70; The wetting and leveling agents in the primer and the topcoat are both alkynediol polyether surfactants; the defoaming agents in the primer and the topcoat are both surfactants containing an alkynediol chemical structure; The rheology aids in the primer and the topcoat are both hydrophobically modified polyurethanes; the dispersing aids in the primer and the topcoat are polyether silicone copolymers; the hardening and wear-resistant agent is a polysiloxane compound; The filler is quartz sand, artificial corundum, and calcium carbonate, and their mass ratio is 1.1:1.1:0.

9. The average particle size of the quartz sand is 40 - 80 mesh, the average particle size of the artificial corundum is 80 mesh, and the average particle size of the calcium carbonate is 2000 mesh; The pH regulator is a high-efficiency composite base; the binder is vinyl acetate emulsion; the pigment is titanium dioxide; the adhesion promoter is vinyl silane coupling agent.

2. An application of the floor paint for a robot warehouse according to claim 1 in a robot warehouse.

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