CN111560817A - Silicon PU, polyurea elastomer, water-based finish paint composite court surface layer and construction method - Google Patents
Silicon PU, polyurea elastomer, water-based finish paint composite court surface layer and construction method Download PDFInfo
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- CN111560817A CN111560817A CN202010457954.0A CN202010457954A CN111560817A CN 111560817 A CN111560817 A CN 111560817A CN 202010457954 A CN202010457954 A CN 202010457954A CN 111560817 A CN111560817 A CN 111560817A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C13/00—Pavings or foundations specially adapted for playgrounds or sports grounds; Drainage, irrigation or heating of sports grounds
- E01C13/06—Pavings made in situ, e.g. for sand grounds, clay courts E01C13/003
- E01C13/065—Pavings made in situ, e.g. for sand grounds, clay courts E01C13/003 at least one in situ layer consisting of or including bitumen, rubber or plastics
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4804—Two or more polyethers of different physical or chemical nature
- C08G18/482—Mixtures of polyethers containing at least one polyether containing nitrogen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/50—Polyethers having heteroatoms other than oxygen
- C08G18/5021—Polyethers having heteroatoms other than oxygen having nitrogen
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
- C08L75/08—Polyurethanes from polyethers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Polymers & Plastics (AREA)
- Medicinal Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
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- Wood Science & Technology (AREA)
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- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention provides a court surface layer compounded by silicon PU, polyurea elastomer and water-based finish paint and a construction method. This technical scheme adopts silicon PU court material, polyurea elastomer and the compound surface course structure of waterborne finish matching mutually, lets silicon PU material make the bottom, plays thickness, and the spraying polyurea elastomer on silicon PU provides high resilience rate, improves the physical properties of court material, and high wear-resisting, high resilience, again according to the technological requirement at polyurea elastomer surface coating waterborne finish of all kinds. According to the invention, the novel court surface layer with good weather resistance, high rebound rate, excellent performance and overlong service life is obtained by using the silicon PU material as the bottom layer, the polyurea elastomer as the reinforcing layer and the water-based finish paint as the color layer. The invention has the service life of more than 10 years, simultaneously maintains excellent physical properties, effectively overcomes the defects of low service life, poor resilience, poor wear resistance, easy pulverization and the like of the common court, and fully protects the safety and the body health of the knee joints of athletes.
Description
Technical Field
The invention relates to the technical field of ball field surface layer materials, in particular to a court surface layer compounded by silicon PU, polyurea elastomer and water-based finish paint and a construction method.
Background
The court surface layer is a special material laid on the court ground and used for keeping the surface performance of the court, and mainly comprises EPDM, silicon PU, elastic acrylic resin and the like. The quality of the surface layer material directly determines the performance of the field, and meanwhile, the paving quality also has important influence. Therefore, it is a core technical goal in the art to develop a high-performance surface material and design a suitable paving process.
Most of the prior court materials are single-component or double-component conventional polyurethane materials with a large amount of fillers, and the court materials have poor physical properties, low rebound rate, long-term use, easy occurrence of hard powdering, short service life and damage to joints of people. Because the material contains a large amount of filler, the material is extremely easy to be pulverized after being used outdoors for a long time, so that the service life of the court is short, and about 3 to 5 years, the court material needs to be repaired again or even laid again; in addition, the common court material has low resilience and is easy to cause damage to the bodies and joints of students.
Disclosure of Invention
The invention aims to provide a court surface layer compounded by silicon PU, polyurea elastomer and water-based finish paint and a construction method thereof aiming at overcoming the technical defects of the prior art, and aims to solve the technical problems of poor physical properties, low rebound rate, easy pulverization, short service life and the like of conventional court materials in the prior art.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
the court surface layer comprises a silicon PU material layer, a polyurea elastomer layer and a water-based finish paint layer, wherein the silicon PU material layer is used as a bottom layer, the polyurea elastomer layer is fixedly arranged on the upper surface of the silicon PU material layer, and the water-based finish paint layer is fixedly arranged on the upper surface of the polyurea elastomer layer;
wherein, the silicon PU material layer comprises the following components in percentage by weight: 25-30% of polyether, 43-48% of filler, 12-15% of plasticizer and 8-10% of isocyanate;
the polyurea elastomer layer comprises a component A and a component B, wherein the mass ratio of the component A to the component B is 1.1: 1; the component A comprises the following components in percentage by weight: 40-45% of polyether and 55-60% of isocyanate; the component B comprises the following components in percentage by weight: 75-81% of amino-terminated polyether and 19-25% of amino chain extender;
the waterborne finish coat layer comprises a waterborne polyurethane emulsion and an HDI curing agent, and the mass ratio of the waterborne polyurethane emulsion to the HDI curing agent is 15: 1.
Preferably, the polyurea elastomer layer is fixed on the upper surface of the silicon PU material layer by a spraying mode; the fixation of the aqueous topcoat layer to the upper surface of the polyurea elastomer layer is achieved by spraying or rolling.
Preferably, the thickness of the silicon PU material layer is 2-6 mm, the thickness of the polyurea elastomer layer is 1-3 mm, and the thickness of the water-based finish paint layer is 200-400 μm.
Preferably, the rebound rate of the silicon PU, the polyurea elastomer and the waterborne finish composite court surface layer is more than or equal to 50 percent, the tensile strength is more than or equal to 12Mpa, the elongation at break is more than or equal to 200 percent, and the Akron abrasion is less than or equal to 0.03cm3/1.61km。
On the basis of the technical scheme, the invention further provides a construction method of the court surface layer compounded by the silicon PU, the polyurea elastomer and the water-based finish paint, which comprises the following steps: taking a silicon PU material as a bottom layer, cleaning dust and sundries on the surface of the silicon PU material before spraying a polyurea elastomer, then rolling and coating the single-component base coat, and spraying the polyurea elastomer after the single-component base coat is cured; spraying a polyurea elastomer by adopting polyurea spraying equipment, wherein the air humidity is less than 85% when the polyurea elastomer is sprayed, the weather is non-rainy, and before spraying, the material is heated to 50-60 ℃ by a heating belt in advance, and then spraying is performed; and after the polyurea elastomer is sprayed for 24 hours, spraying or rolling water-based finish paint on the upper surface of the polyurea elastomer, wherein the weather is non-rainy days when the water-based finish paint is sprayed or rolled.
Preferably, the spraying amount of the polyurea elastomer is as follows: 1.2-1.5 kg is used for spraying a single square with the diameter of 1 mm.
The invention provides a court surface layer compounded by silicon PU, polyurea elastomer and water-based finish paint and a construction method. This technical scheme adopts silicon PU court material, polyurea elastomer and the compound surface course structure of waterborne finish matching mutually, lets silicon PU material make the bottom, plays thickness, and the spraying polyurea elastomer on silicon PU provides high resilience rate, improves the physical properties of court material, and high wear-resisting, high resilience, again according to the technological requirement at polyurea elastomer surface coating waterborne finish of all kinds. According to the invention, the novel court surface layer with good weather resistance, high rebound rate, excellent performance and overlong service life is obtained by using the silicon PU material as the bottom layer, the polyurea elastomer as the reinforcing layer and the water-based finish paint as the color layer. The invention has the service life of more than 10 years, simultaneously maintains excellent physical properties, effectively overcomes the defects of low service life, poor resilience, poor wear resistance, easy pulverization and the like of the common court, and fully protects the safety and the body health of the knee joints of athletes.
Drawings
FIG. 1 is a cross-sectional view of a composite court cover according to the invention;
in the figure:
1. silicon PU material layer 2, polyurea elastomer layer 3, water-based finish paint layer.
Detailed Description
Hereinafter, specific embodiments of the present invention will be described in detail. Well-known structures or functions may not be described in detail in the following embodiments in order to avoid unnecessarily obscuring the details. Approximating language, as used herein in the following examples, may be applied to identify quantitative representations that could permissibly vary in number without resulting in a change in the basic function. Unless defined otherwise, technical and scientific terms used in the following examples have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
Example 1
Silicon PU, polyurea elastomer, compound court surface course of waterborne finish, as shown in figure 1, including silicon PU material layer 1, polyurea elastomer layer 2, waterborne finish layer 3, wherein, regard silicon PU material layer 1 as the bottom, the upper surface on silicon PU material layer 1 sets has polyurea elastomer layer 2, sets has waterborne finish layer 3 on the upper surface of polyurea elastomer layer 2.
Wherein, the silicon PU material is a moisture-curing material: polyether content: 25-30%, filler: 43-48%, plasticizer content of 12-15%, isocyanate content: 8 to 10 percent. The polyurea material is a two-component (A/B) material with the mass ratio of 1.1:1, and the A-component material is as follows: polyether content: 40-45%, isocyanate content: 55% -60%; b component material: content of amino-terminated polyether: 75-81%, and the content of amino chain extender: 19 to 25 percent. The water-based finish paint is a two-component material and is constructed in proportion; the A and B are 15:1, the material of the component A is aqueous polyurethane emulsion, and the component B is HDI curing agent. During construction, the construction thickness of the silicon PU material can be 2mm-6mm or even thicker according to customer requirements, the construction thickness of the polyurea is 1mm-3mm, and the thickness of the water-based finish paint is 200-400 microns.
Before spraying the polyurea elastomer on the silicon PU, dust and sundries on the surface of the silicon PU are cleaned firstly, then the single-component base coat is coated in a rolling way, and the polyurea elastomer is sprayed after the single-component base coat is cured. When the polyurea elastomer is sprayed, special polyurea spraying equipment is needed, and when the polyurea elastomer is sprayed, the material is heated to 50-60 ℃ in advance by a heating belt, the air humidity is less than 85%, the weather is good, and the polyurea elastomer cannot be sprayed in rainy or windy weather. 1.2-1.5 kg for spraying polyurea with the amount of 1mm per square, surface drying is carried out for less than or equal to 25s after spraying, people can get on after 5min, and after 24h, the performance is completely cured, and the next procedure can be carried out.
When the water-based finish paint is sprayed or rolled, the AB components are uniformly mixed according to the ratio of 15:1, and then the water-based finish paint is sprayed or rolled, wherein the weather can not be rainy or windy during construction.
The detection of the composite court surface layer proves that the chemical and physical indexes of the composite court surface layer completely meet the standard of GB36246-2018, the resilience rate is more than or equal to 50 percent, the tensile strength is more than or equal to 12Mpa, the elongation at break is more than or equal to 200 percent, and the Akron abrasion is less than or equal to 0.03cm3/1.61km。
Example 2
A court surface layer compounded by silicon PU, polyurea elastomer and water-based finish paint, as shown in figure 1, comprises a silicon PU material layer 1, a polyurea elastomer layer 2 and a water-based finish paint layer 3, wherein the silicon PU material layer 1 is used as a bottom layer, the polyurea elastomer layer 2 is fixed on the upper surface of the silicon PU material layer 1, and the water-based finish paint layer 3 is fixed on the upper surface of the polyurea elastomer layer 2; wherein, the silicon PU material layer 1 comprises the following components by weight percent: 25-30% of polyether, 43-48% of filler, 12-15% of plasticizer and 8-10% of isocyanate; the polyurea elastomer layer 2 comprises a component A and a component B, and the mass ratio of the component A to the component B is 1.1: 1; the component A comprises the following components in percentage by weight: 40-45% of polyether and 55-60% of isocyanate; the component B comprises the following components in percentage by weight: 75-81% of amino-terminated polyether and 19-25% of amino chain extender; the water-based finish paint layer 3 comprises water-based polyurethane emulsion and an HDI curing agent, and the mass ratio of the water-based polyurethane emulsion to the HDI curing agent is 15: 1.
Wherein, the fixation of the polyurea elastomer layer 2 on the upper surface of the silicon PU material layer 1 is realized by a spraying mode; the fixing of the water-based finish paint layer 3 to the upper surface of the polyurea elastomer layer 2 is performed by spraying or rolling.
The thickness of the silicon PU material layer 1 is 2-6 mm, the thickness of the polyurea elastomer layer 2 is 1-3 mm, and the thickness of the water-based finish paint layer 3 is 200-400 mu m.
The rebound rate of the silicon PU, polyurea elastomer and water-based finish paint composite court surface layer is more than or equal to 50 percent, the tensile strength is more than or equal to 12Mpa, the elongation at break is more than or equal to 200 percent, and the Akron abrasion is less than or equal to 0.03cm3/1.61km。
The construction method of the court surface layer compounded by the silicon PU, the polyurea elastomer and the water-based finish paint comprises the following steps: taking a silicon PU material as a bottom layer, cleaning dust and sundries on the surface of the silicon PU material before spraying a polyurea elastomer, then rolling and coating the single-component base coat, and spraying the polyurea elastomer after the single-component base coat is cured; spraying a polyurea elastomer by adopting polyurea spraying equipment, wherein the air humidity is less than 85% when the polyurea elastomer is sprayed, the weather is non-rainy, and before spraying, the material is heated to 50-60 ℃ by a heating belt in advance, and then spraying is performed; and after the polyurea elastomer is sprayed for 24 hours, spraying or rolling water-based finish paint on the upper surface of the polyurea elastomer, wherein the weather is non-rainy days when the water-based finish paint is sprayed or rolled. Wherein the spraying amount of the polyurea elastomer is as follows: 1.2-1.5 kg is used for spraying a single square with the diameter of 1 mm.
The embodiments of the present invention have been described in detail, but the description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention. Any modification, equivalent replacement, and improvement made within the scope of the application of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The court surface layer is characterized by comprising a silicon PU material layer (1), a polyurea elastomer layer (2) and a water-based finish paint layer (3), wherein the silicon PU material layer (1) is used as a bottom layer, the polyurea elastomer layer (2) is fixed on the upper surface of the silicon PU material layer (1), and the water-based finish paint layer (3) is fixed on the upper surface of the polyurea elastomer layer (2);
wherein, the silicon PU material layer (1) comprises the following components in percentage by weight: 25-30% of polyether, 43-48% of filler, 12-15% of plasticizer and 8-10% of isocyanate;
the polyurea elastomer layer (2) comprises a component A and a component B, wherein the mass ratio of the component A to the component B is 1.1: 1; the component A comprises the following components in percentage by weight: 40-45% of polyether and 55-60% of isocyanate; the component B comprises the following components in percentage by weight: 75-81% of amino-terminated polyether and 19-25% of amino chain extender;
the water-based finish paint layer (3) comprises water-based polyurethane emulsion and an HDI curing agent, and the mass ratio of the water-based polyurethane emulsion to the HDI curing agent is 15: 1.
2. The silicon PU, polyurea elastomer and water-based finish composite court layer according to claim 1, wherein the polyurea elastomer layer (2) is fixed on the upper surface of the silicon PU material layer (1) by spraying; the fixation of the water-based finish paint layer (3) on the upper surface of the polyurea elastomer layer (2) is realized by spraying or rolling.
3. The silicon PU, polyurea elastomer and water-based finish composite court surface layer according to claim 1, wherein the thickness of the silicon PU material layer (1) is 2-6 mm, the thickness of the polyurea elastomer layer (2) is 1-3 mm, and the thickness of the water-based finish layer (3) is 200-400 μm.
4. The silicon PU, polyurea elastomer and water-based finish composite court surface layer as claimed in claim 1, wherein the resilience rate of the silicon PU, polyurea elastomer and water-based finish composite court surface layer is not less than 50%, the tensile strength is not less than 12MPa, and the elongation at break is not less than200 percent of Akron abrasion is less than or equal to 0.03cm3/1.61km。
5. The construction method of the silicon PU, polyurea elastomer and water-based finish paint composite court surface layer as claimed in claim 1, is characterized in that: taking a silicon PU material as a bottom layer, cleaning dust and sundries on the surface of the silicon PU material before spraying a polyurea elastomer, then rolling and coating the single-component base coat, and spraying the polyurea elastomer after the single-component base coat is cured; spraying a polyurea elastomer by adopting polyurea spraying equipment, wherein the air humidity is less than 85% when the polyurea elastomer is sprayed, the weather is non-rainy, and before spraying, the material is heated to 50-60 ℃ by a heating belt in advance, and then spraying is performed; and after the polyurea elastomer is sprayed for 24 hours, spraying or rolling water-based finish paint on the upper surface of the polyurea elastomer, wherein the weather is non-rainy days when the water-based finish paint is sprayed or rolled.
6. The construction method according to claim 5, wherein the polyurea elastomer is sprayed in an amount of: 1.2-1.5 kg is used for spraying a single square with the diameter of 1 mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010457954.0A CN111560817A (en) | 2020-05-26 | 2020-05-26 | Silicon PU, polyurea elastomer, water-based finish paint composite court surface layer and construction method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010457954.0A CN111560817A (en) | 2020-05-26 | 2020-05-26 | Silicon PU, polyurea elastomer, water-based finish paint composite court surface layer and construction method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112962392A (en) * | 2021-02-08 | 2021-06-15 | 山东世纪联合新材料科技有限公司 | High-wear-resistance composite silicon PU court surface layer and construction method thereof |
| CN113026478A (en) * | 2021-02-08 | 2021-06-25 | 山东世纪联合新材料科技有限公司 | High-elastic composite silicon PU court surface layer and construction method thereof |
| CN114316785A (en) * | 2021-12-22 | 2022-04-12 | 上海宜邦丽新材料有限公司 | Anti-cracking flame-retardant silicon PU (polyurethane) finish paint and preparation method thereof |
-
2020
- 2020-05-26 CN CN202010457954.0A patent/CN111560817A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112962392A (en) * | 2021-02-08 | 2021-06-15 | 山东世纪联合新材料科技有限公司 | High-wear-resistance composite silicon PU court surface layer and construction method thereof |
| CN113026478A (en) * | 2021-02-08 | 2021-06-25 | 山东世纪联合新材料科技有限公司 | High-elastic composite silicon PU court surface layer and construction method thereof |
| CN112962392B (en) * | 2021-02-08 | 2022-04-15 | 山东世纪联合新材料科技有限公司 | High-wear-resistance composite silicon PU court surface layer and construction method thereof |
| CN114316785A (en) * | 2021-12-22 | 2022-04-12 | 上海宜邦丽新材料有限公司 | Anti-cracking flame-retardant silicon PU (polyurethane) finish paint and preparation method thereof |
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Address after: 255000 north of Nanling South Road, high tech Zone, Zibo City, Shandong Province, east of Zidong Railway Applicant after: Shandong century United New Material Technology Co., Ltd Address before: 255000 north of Nanling South Road, high tech Zone, Zibo City, Shandong Province, east of Zidong Railway Applicant before: ZIBO SHIJI LIANHE NEW BUILDING MATERIAL Co.,Ltd. |
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