Preparation and application of renewable epoxy modified polyurethane millstone material

Abstract

The invention discloses preparation and application of a renewable epoxy modified polyurethane millstone material, and relates to the technical field of building materials, the renewable epoxy modified polyurethane millstone material comprises the following specific preparation raw materials: resin slurry, a curing agent and a colorful aggregate mixture; the specific preparation method comprises the following steps: 1, stirring and mixing resin slurry and a curing agent by using a stirrer until the materials are uniformly stirred to obtain mixed slurry; 2, uniformly mixing the colorful aggregate mixture and the mixed slurry through a stirrer; and step 3, obtaining a millstone material finished product. According to the preparation and application of the renewable epoxy modified polyurethane millstone material, the epoxy modified polyurethane material is used as an adhesive to replace rigid and thermosetting materials of an adhesive in a traditional millstone floor, so that the floor has certain flexibility, and the elongation at break of the floor material is increased to achieve the effects of difficult cracking, high strength, silence, noise reduction and the like required by the floor; and the main material of the adhesive is modified castor oil polyol, and more than 50% of the material can be regenerated.

Description

Technical Field

[0001] The invention relates to the technical field of building materials, in particular to the preparation and application of a renewable epoxy-modified polyurethane grindstone material. Background Art

[0002] Grindstone is a product made by mixing crushed stone, glass, crystal, stone, shell, etc. as aggregate into cement or organic binder to make a concrete product, and then grinding and polishing the surface. It can be used in floor and wall systems, with the characteristics of overall seamlessness, creative pattern and color, wear resistance, water resistance, chemical corrosion resistance, easy maintenance, safety and environmental protection.

[0003] Classification by adhesive: inorganic terrazzo and organic terrazzo; inorganic terrazzo: terrazzo floor and wall materials made of inorganic adhesive (cement, gypsum); organic terrazzo: terrazzo floor and wall materials made of organic adhesive (epoxy resin, polyurethane resin).

[0004] Terrazzo has now become a high-end mainstream floor material, with a wide range of applications, including various large-scale public construction projects, comprehensive commercial buildings, hospitals, parking lots, commercial projects, etc. Terrazzo floors are seamless, easy to clean, non-toxic and environmentally friendly, wear-resistant, impact-resistant, water-resistant, durable, and easy to maintain. Colors and patterns can be customized to highlight individuality and dignity.

[0005] The current terrazzo system is mainly epoxy terrazzo and inorganic terrazzo, and its base bonding material is rigid cement or thermosetting epoxy resin material. The material itself has high rigidity and hardness, and is easily affected by the cracking or deformation of the cement foundation, causing the surface layer to crack. It is also easily affected by changes in ambient temperature. Due to the different thermal expansion and contraction coefficients between the components, the surface layer cracks. In addition, in the construction of traditional terrazzo floors, the standard process requires a crack-resistant layer of more than 1 cm, and it needs to be matched with various crack-resistant materials, such as fiberglass cloth, crack-resistant nets, etc., but it cannot fundamentally solve the risk of cracking of terrazzo in the later stage, which will increase the construction cost and the load of the building; at the same time, the traditional terrazzo adhesive is based on petrochemicals and is non-renewable except for aggregates. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a preparation and application of a renewable epoxy-modified polyurethane grindstone material, which solves the problems raised in the above-mentioned background technology.

[0007] To achieve the above objectives, the present invention is implemented through the following technical scheme: Preparation and application of a renewable epoxy-modified polyurethane grinding stone material, including the following specific preparation raw materials:

[0008] Resin slurry, curing agent, colorful aggregate mixture;

[0009] The specific preparation method is as follows:

[0010] Step 1: Use a stirrer to stir and mix the resin slurry and the curing agent until they are uniformly stirred to obtain a mixed slurry, wherein the mixing mass ratio of the resin slurry to the curing agent is 2:1, and the speed of the stirrer is set to 60r / min;

[0011] Step 2: Mix the colorful aggregate mixture and the mixed slurry evenly by a mixer, wherein the mixing mass ratio of the colorful aggregate mixture to the mixed slurry is 5:1, and the speed of the mixer is set to 45r / min;

[0012] Step 3: Get the finished grinding stone material.

[0013] Optionally, the raw materials for preparing the resin slurry are specifically as follows:

[0014] Renewable modified flexible castor oil polyol, modified epoxy material, wetting and dispersing agent, defoaming agent, anti-settling agent, drying agent, activating powder, color paste;

[0015] The specific proportions by weight are as follows:

[0016] Renewable modified flexible castor oil polyol 50-85 parts, modified epoxy material: 0.5-1.0 parts, wetting and dispersing agent: 0.4-0.6 parts, defoaming agent: 0.5-1.0 parts, anti-settling agent: 1.0-2.0 parts, drying agent: 0.1-0.2 parts, activating powder: 5-10 parts, color paste 5-10 parts.

[0017] Optionally, the specific proportion of the preparation raw materials in parts by weight is as follows:

[0018] 80 parts of renewable modified flexible castor oil polyol, 1.0 parts of modified epoxy material, 0.5 parts of wetting and dispersing agent, 0.7 parts of defoaming agent, 1.6 parts of anti-settling agent, 0.2 parts of drying agent, 8 parts of activating powder and 8 parts of color paste.

[0019] Optionally, the preparation method of the resin slurry is as follows:

[0020] S1. Put each raw material into the batching tank in turn, and disperse it at high speed for 30 minutes at 500-1000rpm under vacuum conditions equipped with low-temperature cooling water;

[0021] S2. Detect the fineness and color of the raw materials;

[0022] S3. Packaging the qualified raw materials.

[0023] Optionally, the curing agent is an aliphatic diisocyanate curing agent.

[0024] Optionally, the raw materials for preparing the colorful aggregate mixture are specifically as follows:

[0025] Marble powder, quartz sand, colorful aggregate;

[0026] The specific proportions by weight are as follows:

[0027] 20-30 parts of marble powder, 20-30 parts of quartz sand, 20-40 parts of colorful aggregate.

[0028] Optionally, the marble powder adopts a 200 mesh specification.

[0029] Optionally, the quartz sand adopts a 100 mesh specification.

[0030] Optionally, the colorful aggregate is a mixture of shell, glass, and crushed stone powder.

[0031] An application of a renewable epoxy-modified polyurethane grindstone material according to any one of the claims, wherein the construction process of the renewable epoxy-modified polyurethane grindstone material is as follows:

[0032] (1) Grassroots processing: the specific contents are as follows:

[0033] The base layer is milled, ground and vacuumed in sequence;

[0034] If there is oil or other pollution, use special equipment and solvent to clean it;

[0035] Check whether there are hollows in the base layer. If there are hollows, remove them and repair them.

[0036] Ground crack treatment, cutting triangular grooves and using epoxy mortar to strengthen;

[0037] Expansion joint treatment, fill the joints with special elastic polyurethane caulking material;

[0038] The concrete must be flat and dense, with a flatness of 3M ruler ≤ 2mm and strength ≥ C25;

[0039] If the painted floor is at the bottom layer and the groundwater level is high, the concrete bottom layer should be waterproofed first to prevent the groundwater vapor from rising and forming bulges and peeling.

[0040] The fine stone concrete leveling layer on the floor slab, reinforced concrete beam and concrete poured in batches has a strength of ≥C25 and a thickness of ≥50mm;

[0041] When repairing or leveling the damaged concrete surface, the national standard GB50212 should be followed, that is, fine stone concrete should be used for leveling, with a strength of ≥C25 and a thickness of ≥30mm;

[0042] When there are no construction conditions and cement mortar is needed for leveling, the concrete interface agent should be rolled and then leveled according to the designed thickness;

[0043] When the construction conditions are not suitable for the above operations, epoxy mortar can be used for leveling;

[0044] (2) Lay out the lines according to the construction drawings. The specific contents are as follows:

[0045] Read and understand the construction drawings in detail, confirm the construction area and construction specifications according to the construction drawings, plan the construction steps according to the pattern and area required by the construction drawings, and mark and clear the construction area on the base floor with ink lines and templates;

[0046] (3) Install the separator strips. The details are as follows:

[0047] Use copper strips to clearly separate the pattern area and the large construction area, and then compare the pattern and area with the construction drawing. Only after confirmation can construction be carried out;

[0048] (4) Roller coating / trowel coating of polyurethane primer, the specific contents are as follows:

[0049] Use thick-coating primer to seal the foundation according to the foundation conditions to achieve an overall anti-cracking effect;

[0050] (5) Paving the polyurethane terrazzo surface layer, the specific contents are as follows:

[0051] First, fill the pattern evenly with the mixed grinding stone material, and then spread it over a large area;

[0052] (6) Rough grinding process, the specific contents are as follows:

[0053] For the first pass, use a 60-90# diamond grinding head for rough grinding, and use a ruler to check the flatness until the surface is ground flat and the separators and aggregates are fully exposed;

[0054] (7) Intermediate grinding process, the specific contents are as follows:

[0055] Use a 50# water-grinding disc to grind away the knife marks of the diamond grinding head produced by rough grinding until the surface is smooth, and clean up the mud produced by water grinding;

[0056] Use a 150# water-grinding disc to grind off the knife marks from the last grinding until the surface is smooth, and clean up the mud produced by the water grinding;

[0057] One-time repair: after the base surface is completely dry, use the same slurry as the mixing material and the repair powder to repair the holes in the base layer;

[0058] Use 300# water grinding disc to grind the base surface flat and clean the mud produced by water grinding;

[0059] Secondary repair: After the base surface is completely dry, use the same slurry as the mixing material and repair powder to repair the holes in the base layer;

[0060] Use 500# water grinding disc to grind the base surface flat and clean the mud produced by water grinding;

[0061] (8) Fine grinding process, the specific contents are as follows:

[0062] Use 1000# water grinding disc to grind the base surface flat and clean the mud produced by water grinding;

[0063] Use 1500# water grinding disc to grind the base surface flat and clean the mud produced by water grinding;

[0064] Use 2000# water grinding disc to grind the base surface flat and clean the mud produced by water grinding;

[0065] (9) Cleaning, the specific contents are as follows:

[0066] Use a water gun to rinse away impurities such as mud and floating sand on the base surface and dry it thoroughly;

[0067] (10) Apply anti-fouling layer, the specific contents are as follows:

[0068] Apply the anti-fouling topcoat evenly to the surface of the base layer, and proceed to the next step after it is completely dry;

[0069] (11) Polishing process, the specific contents are as follows:

[0070] Use a diamond pad to grind and polish the base layer;

[0071] Use a wool pad to sand and polish the base;

[0072] (12) Delivery for use.

[0073] The present invention provides a preparation and application of a renewable epoxy-modified polyurethane grindstone material, which has the following beneficial effects:

[0074] The preparation and application of the renewable epoxy-modified polyurethane terrazzo material uses epoxy-modified polyurethane material as an adhesive to replace the rigid and thermosetting materials of the adhesive in the traditional terrazzo floor, so that the floor has a certain flexibility and increases the elongation at break of the floor material to achieve the required effects of not easy to crack, high strength, quiet noise reduction, etc. The main material of the adhesive uses modified castor oil polyol, and more than 50% of the material is renewable. DETAILED DESCRIPTION

[0075] The technical solutions in the embodiments of the present invention will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0076] Example 1: Preparation of a renewable epoxy-modified polyurethane grinding stone material, including the following specific preparation raw materials:

[0077] Resin slurry, curing agent, colorful aggregate mixture;

[0078] The specific preparation method is as follows:

[0079] Step 1: Use a stirrer to stir and mix the resin slurry and the curing agent until they are uniformly stirred to obtain a mixed slurry, wherein the mixing mass ratio of the resin slurry to the curing agent is 2:1, the speed of the stirrer is set to 60 r / min, and the curing agent is an aliphatic diisocyanate curing agent;

[0080] The raw materials for preparing the resin slurry are as follows:

[0081] Renewable modified flexible castor oil polyol, modified epoxy material, wetting and dispersing agent, defoaming agent, anti-settling agent, drying agent, activating powder, color paste;

[0082] The specific proportions by weight are as follows:

[0083] Renewable modified flexible castor oil polyol 80 parts, modified epoxy material: 1.0 parts, wetting and dispersing agent: 0.5 parts, defoaming agent: 0.7 parts, anti-settling agent: 1.6 parts, drying agent: 0.2 parts, activation powder: 8 parts, color paste 8 parts;

[0084] The preparation method of the resin slurry is as follows:

[0085] S1. Put each raw material into the batching tank in turn, and disperse it at high speed for 30 minutes at 500-1000rpm under vacuum conditions equipped with low-temperature cooling water;

[0086] S2. Detect the fineness and color of the raw materials;

[0087] S3, packing the qualified raw materials;

[0088] Step 2: Mix the colorful aggregate mixture and the mixed slurry evenly by a mixer, wherein the mixing mass ratio of the colorful aggregate mixture to the mixed slurry is 5:1, and the speed of the mixer is set to 45r / min;

[0089] The raw materials for preparing the colorful aggregate mixture are as follows:

[0090] Marble powder, quartz sand, colorful aggregate;

[0091] The specific proportions by weight are as follows:

[0092] 20-30 parts of marble powder, 20-30 parts of quartz sand, 20-40 parts of colorful aggregate;

[0093] The marble powder adopts 200 mesh specifications, the quartz sand adopts 100 mesh specifications, and the colorful aggregate is a mixture of shell, glass, and crushed stone powder;

[0094] Step 3: Get the finished grinding stone material.

[0095] Embodiment 2: A construction process of a renewable epoxy-modified polyurethane grinding stone material, as follows:

[0096] (1) Grassroots processing: the specific contents are as follows:

[0097] The base layer is milled, ground and vacuumed in sequence;

[0098] If there is oil or other pollution, use special equipment and solvent to clean it;

[0099] Check whether there are hollows in the base layer. If there are hollows, remove them and repair them.

[0100] Ground crack treatment, cutting triangular grooves and using epoxy mortar to strengthen;

[0101] Expansion joint treatment, fill the joints with special elastic polyurethane caulking material;

[0102] The concrete must be flat and dense, with a flatness of 3M ruler ≤ 2mm and strength ≥ C25;

[0103] If the painted floor is at the bottom layer and the groundwater level is high, the concrete bottom layer should be waterproofed first to prevent the groundwater vapor from rising and forming bulges and peeling.

[0104] The fine stone concrete leveling layer on the floor slab, reinforced concrete beam and concrete poured in batches has a strength of ≥C25 and a thickness of ≥50mm;

[0105] When repairing or leveling the damaged concrete surface, the national standard GB50212 should be followed, that is, fine stone concrete should be used for leveling, with a strength of ≥C25 and a thickness of ≥30mm;

[0106] When there are no construction conditions and cement mortar is needed for leveling, the concrete interface agent should be rolled and then leveled according to the designed thickness;

[0107] When the construction conditions are not suitable for the above operations, epoxy mortar can be used for leveling;

[0108] (2) Lay out the lines according to the construction drawings. The specific contents are as follows:

[0109] Read and understand the construction drawings in detail, confirm the construction area and construction specifications according to the construction drawings, plan the construction steps according to the pattern and area required by the construction drawings, and mark and clear the construction area on the base floor with ink lines and templates;

[0110] (3) Install the separator strips. The details are as follows:

[0111] Use copper strips to clearly separate the pattern area and the large construction area, and then compare the pattern and area with the construction drawing. Only after confirmation can construction be carried out;

[0112] (4) Roller coating / trowel coating of polyurethane primer, the specific contents are as follows:

[0113] Use thick-coating primer to seal the foundation according to the foundation conditions to achieve an overall anti-cracking effect;

[0114] (5) Paving the polyurethane terrazzo surface layer, the specific contents are as follows:

[0115] First, fill the pattern evenly with the mixed grinding stone material, and then spread it over a large area;

[0116] (6) Rough grinding process, the specific contents are as follows:

[0117] For the first pass, use a 60-90# diamond grinding head for rough grinding, and use a ruler to check the flatness until the surface is ground flat and the separators and aggregates are fully exposed;

[0118] (7) Intermediate grinding process, the specific contents are as follows:

[0119] Use a 50# water-grinding disc to grind away the knife marks of the diamond grinding head produced by rough grinding until the surface is smooth, and clean up the mud produced by water grinding;

[0120] Use a 150# water-grinding disc to grind off the knife marks from the last grinding until the surface is smooth, and clean up the mud produced by the water grinding;

[0121] One-time repair: after the base surface is completely dry, use the same slurry as the mixing material and the repair powder to repair the holes in the base layer;

[0122] Use 300# water grinding disc to grind the base surface flat and clean the mud produced by water grinding;

[0123] Secondary repair: After the base surface is completely dry, use the same slurry as the mixing material and repair powder to repair the holes in the base layer;

[0124] Use 500# water grinding disc to grind the base surface flat and clean the mud produced by water grinding;

[0125] (8) Fine grinding process, the specific contents are as follows:

[0126] Use 1000# water grinding disc to grind the base surface flat and clean the mud produced by water grinding;

[0127] Use 1500# water grinding disc to grind the base surface flat and clean the mud produced by water grinding;

[0128] Use 2000# water grinding disc to grind the base surface flat and clean the mud produced by water grinding;

[0129] (9) Cleaning, the specific contents are as follows:

[0130] Use a water gun to rinse away impurities such as mud and floating sand on the base surface and dry it thoroughly;

[0131] (10) Apply anti-fouling layer, the specific contents are as follows:

[0132] Apply the anti-fouling topcoat evenly to the surface of the base layer, and proceed to the next step after it is completely dry;

[0133] (11) Polishing process, the specific contents are as follows:

[0134] Use a diamond pad to grind and polish the base layer;

[0135] Use a wool pad to sand and polish the base;

[0136] (12) Delivery for use.

[0137] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A preparation method of a renewable epoxy-modified polyurethane grinding stone material, characterized in that: The invention comprises the following specific preparation raw materials: Resin slurry, curing agent, colorful aggregate mixture; The specific preparation method is as follows: Step 1: Use a stirrer to stir and mix the resin slurry and the curing agent until they are uniformly stirred to obtain a mixed slurry, wherein the mixing mass ratio of the resin slurry to the curing agent is 2:1, and the speed of the stirrer is set to 60r / min; Step 2: Mix the colorful aggregate mixture and the mixed slurry evenly by a mixer, wherein the mixing mass ratio of the colorful aggregate mixture to the mixed slurry is 5:1, and the speed of the mixer is set to 45r / min; Step 3: Get the finished grinding stone material.

2. The preparation method of a renewable epoxy-modified polyurethane grinding stone material according to claim 1, characterized in that: The raw materials for preparing the resin slurry are specifically as follows: Renewable modified flexible castor oil polyol, modified epoxy material, wetting and dispersing agent, defoaming agent, anti-settling agent, drying agent, activating powder, color paste; The specific proportions by weight are as follows: Renewable modified flexible castor oil polyol 50-85 parts, modified epoxy material: 0.5-1.0 parts, wetting and dispersing agent: 0.4-0.6 parts, defoaming agent: 0.5-1.0 parts, anti-settling agent: 1.0-2.0 parts, drying agent: 0.1-0.2 parts, activating powder: 5-10 parts, color paste 5-10 parts.

3. The preparation method of a renewable epoxy-modified polyurethane grinding stone material according to claim 2, characterized in that: The specific proportion of the raw materials in parts by weight is as follows: 80 parts of renewable modified flexible castor oil polyol, 1.0 parts of modified epoxy material, 0.5 parts of wetting and dispersing agent, 0.7 parts of defoaming agent, 1.6 parts of anti-settling agent, 0.2 parts of drying agent, 8 parts of activating powder and 8 parts of color paste.

4. The preparation method of a renewable epoxy-modified polyurethane grinding stone material according to claim 3, characterized in that: The preparation method of the resin slurry is specifically as follows: S1. Put each raw material into the batching tank in turn, and disperse it at high speed at 500-1000rpm for 30 minutes under vacuum conditions equipped with low-temperature cooling water; S2. Detect the fineness and color of the raw materials; S3. Packaging the qualified raw materials.

5. The preparation method of a renewable epoxy-modified polyurethane grinding stone material according to claim 1, characterized in that: The curing agent is an aliphatic diisocyanate curing agent.

6. The preparation method of a renewable epoxy-modified polyurethane grinding stone material according to claim 1, characterized in that: The raw materials for preparing the colorful aggregate mixture are specifically as follows: Marble powder, quartz sand, colorful aggregate; The specific proportions by weight are as follows: 20-30 parts of marble powder, 20-30 parts of quartz sand, 20-40 parts of colorful aggregate.

7. The preparation method of a renewable epoxy-modified polyurethane grinding stone material according to claim 6, characterized in that: The marble powder adopts 200 mesh specifications.

8. The preparation method of a renewable epoxy-modified polyurethane grinding stone material according to claim 6, characterized in that: The quartz sand adopts 100 mesh specifications.

9. The preparation method of a renewable epoxy-modified polyurethane grinding stone material according to claim 6, characterized in that: The colorful aggregate is made by mixing the powder of shells, glass and crushed stones.

10. An application of a renewable epoxy-modified polyurethane grinding stone material according to any one of claims 1 to 9, characterized in that: The construction process of the renewable epoxy modified polyurethane grindstone material is as follows: (1) Grassroots processing: the specific contents are as follows: The base layer is milled, ground and vacuumed in sequence; If there is oil or other pollution, use special equipment and solvent to clean it; Check whether there are hollows in the base layer. If there are hollows, remove them and repair them. Ground crack treatment, cutting triangular grooves and using epoxy mortar to strengthen; Expansion joint treatment, fill the joints with special elastic polyurethane caulking material; The concrete must be flat and dense, with a flatness of 3M ruler ≤ 2mm and strength ≥ C25; If the painted floor is at the bottom layer and the groundwater level is high, the concrete bottom layer should be waterproofed first to prevent the groundwater vapor from rising and forming bulges and peeling. The fine stone concrete leveling layer on the floor slab, reinforced concrete beam and concrete poured in batches has a strength of ≥C25 and a thickness of ≥50mm; When repairing or leveling the damaged concrete surface, the national standard GB50212 should be followed, that is, fine stone concrete should be used for leveling, with a strength of ≥C25 and a thickness of ≥30mm; When there are no construction conditions and cement mortar is needed for leveling, the concrete interface agent should be rolled and then leveled according to the designed thickness; When the construction conditions are not suitable for the above operations, epoxy mortar can be used for leveling; (2) Lay out the lines according to the construction drawings. The specific contents are as follows: Read and understand the construction drawings in detail, confirm the construction area and construction specifications according to the construction drawings, plan the construction steps according to the pattern and area required by the construction drawings, and mark and clear the construction area on the base floor with ink lines and templates; (3) Install the separator strips. The details are as follows: Use copper strips to clearly separate the pattern area and the large construction area, and then compare the pattern and area with the construction drawing. Only after confirmation can construction be carried out; (4) Roller coating / trowel coating of polyurethane primer, the specific contents are as follows: Use thick-coating primer to seal the foundation according to the foundation conditions to achieve an overall anti-cracking effect; (5) Paving the polyurethane terrazzo surface layer, the specific contents are as follows: First, fill the pattern evenly with the mixed grinding stone material, and then spread it over a large area; (6) Rough grinding process, the specific contents are as follows: For the first pass, use a 60-90# diamond grinding head for rough grinding, and use a ruler to check the flatness until the surface is ground flat and the separators and aggregates are fully exposed; (7) Intermediate grinding process, the specific contents are as follows: Use a 50# water-grinding disc to grind away the knife marks of the diamond grinding head produced by rough grinding until the surface is smooth, and clean up the mud produced by water grinding; Use a 150# water-grinding disc to grind off the knife marks from the last grinding until the surface is smooth, and clean up the mud produced by the water grinding; One-time repair: after the base surface is completely dry, use the same slurry as the mixing material and the repair powder to repair the holes in the base layer; Use 300# water grinding disc to grind the base surface flat and clean the mud produced by water grinding; Secondary repair: After the base surface is completely dry, use the same slurry as the mixing material and repair powder to repair the holes in the base layer; Use 500# water grinding disc to grind the base surface flat and clean the mud produced by water grinding; (8) Fine grinding process, the specific contents are as follows: Use 1000# water grinding disc to grind the base surface flat and clean the mud produced by water grinding; Use 1500# water grinding disc to grind the base surface flat and clean the mud produced by water grinding; Use 2000# water grinding disc to grind the base surface flat and clean the mud produced by water grinding; (9) Cleaning, the specific contents are as follows: Use a water gun to rinse away impurities such as mud and floating sand on the base surface and dry it thoroughly; (10) Apply anti-fouling layer, the specific contents are as follows: Apply the anti-fouling topcoat evenly to the surface of the base layer, and proceed to the next step after it is completely dry; (11) Polishing process, the specific contents are as follows: Use a diamond pad to grind and polish the base layer; Use a wool pad to sand and polish the base; (12) Delivery for use.