A durable and collapse-resistant silicone PU court

Abstract

This utility model relates to a durable and collapse-resistant silicone PU (SPU) sports court, comprising, from bottom to top: a compacted concrete layer, a first compression-resistant layer, a first buffer layer, a second compression-resistant layer, a second buffer layer, and a silicone PU layer; the first compression-resistant layer is formed of crack-resistant mortar; the second compression-resistant layer is formed by an array of several crack-resistant mortar blocks arranged at intervals and filled with shock-absorbing buffer blocks; both the first and second buffer layers are made of rubber or plastic. The silicone PU sports court provided by this utility model has better compression resistance, resistance to local collapse, and crack resistance, while also exhibiting good shock absorption and rebound performance.

Description

Technical Field

[0001] This utility model relates to the technical field of surface structure of silicone PU courts, and in particular to a durable and collapse-resistant silicone PU court. Background Technology

[0002] Silicon PU (SPU) flooring is widely used for sports court paving due to its moderate elasticity and excellent wear resistance. Currently, some outdoor courts reduce the number and thickness of the paving layers to lower maintenance costs. When the SPU surface ages, only surface repair is needed. However, this significantly reduces the court's shock absorption and rebound performance, resulting in a poor user experience. On the other hand, increasing the number or thickness of the elastic layer can lead to problems such as localized subsidence, water accumulation, aging, and unevenness due to the high frequency of use and frequent exposure to sunlight and rain on outdoor courts.

[0003] This application proposes a durable and collapse-resistant silicone PU court that ensures the surface has certain shock absorption and rebound performance, reduces the collapse rate, and is easy to maintain. Utility Model Content

[0004] The purpose of this invention is to provide a durable and collapse-resistant silicone PU court with good resistance to dents and cracks.

[0005] The technical solution adopted in this utility model is:

[0006] A durable and collapse-resistant silicone PU court comprises, from bottom to top: a compacted concrete layer, a first compressive layer, a first buffer layer, a second compressive layer, a second buffer layer, and a silicone PU layer; the first compressive layer is formed of crack-resistant mortar; the second compressive layer is formed by an array of several crack-resistant mortar blocks arranged at intervals and filled with shock-absorbing buffer blocks; both the first buffer layer and the second buffer layer are made of rubber or plastic.

[0007] The principle of this invention is as follows: A layer of crack-resistant mortar is first applied over a compacted concrete layer, and after it solidifies, it forms the first compressive strength layer. A small amount of crack-resistant mortar mixed with adhesive is used as a binder to bond the first buffer layer over the first compressive strength layer. A second compressive strength layer is then bonded together using adhesive. Similarly, when bonding the second buffer layer over the second compressive strength layer, a small amount of crack-resistant mortar mixed with adhesive is used as a binder. The second buffer layer is then bonded to the silicone PU layer using adhesive. The crack-resistant mortar possesses excellent crack resistance, support, and tensile strength, resulting in good crack resistance in both the first and second buffer layers during bonding. After solidification, the crack-resistant mortar also provides good support for the buffer layer. This prevents localized collapse of the entire sports field surface.

[0008] Preferably, in the second compressive layer, the volume of the crack-resistant mortar block accounts for not less than 75% of the volume of the second compressive layer; the shock-absorbing buffer block is filled with an interference fit between two adjacent crack-resistant mortar blocks.

[0009] Preferably, the crack-resistant mortar blocks in the second compressive layer are rhomboids or other regular polygons except squares; the gap between any two adjacent crack-resistant mortar blocks is no more than 5 cm.

[0010] Preferably, the shock-absorbing buffer block in the second compression-resistant layer is a styrene-butadiene rubber block or an EPDM rubber block.

[0011] Preferably, the first buffer layer is a styrene-butadiene rubber pad or an EPDM rubber pad.

[0012] Preferably, the thickness of the first buffer layer is not less than the thickness of the first compression-resistant layer, nor less than the thickness of the second compression-resistant layer. More preferably, the thickness of the first buffer layer is 4~8mm.

[0013] Preferably, the second buffer layer is a styrene-butadiene rubber pad or an EPDM rubber pad.

[0014] Furthermore, a waterproof layer is provided between the second buffer layer and the silicone PU layer, which prevents rainwater from seeping in. Preferably, the waterproof layer is a two-component modified acrylic layer.

[0015] Furthermore, the upper surface of the silicone PU layer is also embedded with raised anti-slip textures to enhance friction and prevent slippage. Preferably, the anti-slip textures are made of PU material and can be granular, striped, or polygonal.

[0016] The silicone PU court provided by this utility model has better resistance to pressure, local collapse, and cracking, as well as good shock absorption and rebound performance. Attached Figure Description

[0017] Figure 1 The diagram shows a cross-sectional view of the sports field surface in an embodiment; the cross-section of the second compressive layer, labeled 4, corresponds to... Figure 2 AA direction.

[0018] Figure 2 This is a top view of the second compressive layer in the embodiment.

[0019] Figure 3 This is a partial top view of the sports field surface as an example.

[0020] Figure reference numerals: 1-Concrete layer; 2-First compressive layer; 3-First buffer layer; 4-Second compressive layer; 41-Crack-resistant mortar block; 42-Shock-absorbing buffer block; 5-Second buffer layer; 6-Silicone PU layer; 7-Anti-slip texture; 8-Waterproof layer. Detailed Implementation

[0021] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings. Example

[0022] like Figures 1 to 3 As shown, this embodiment provides a durable and collapse-resistant silicone PU court, which includes, from bottom to top: a compacted concrete layer 1, a first compression layer 2, a first buffer layer 3, a second compression layer 4, a second buffer layer 5, a waterproof layer 8, and a silicone PU layer 6. The upper surface of the silicone PU layer 6 is also embedded with an upwardly protruding anti-slip texture 7.

[0023] like Figure 1 As shown:

[0024] The first compressive layer 2 is formed by continuously laying and solidifying crack-resistant mortar.

[0025] The first buffer layer 3 uses styrene-butadiene rubber pads, which are low in cost and have good hardness and support.

[0026] The second compressive layer 4 is formed by an array of crack-resistant mortar blocks 41 arranged at intervals and filled with shock-absorbing buffer blocks 42. The crack-resistant mortar blocks 41 are formed by the solidification of crack-resistant mortar according to a predetermined shape. In this embodiment, each crack-resistant mortar block 41 is a uniformly sized rhomboid, and the shock-absorbing buffer blocks 42 are made of styrene-butadiene rubber. The volume of the crack-resistant mortar blocks 41 accounts for approximately 80% of the volume of the second compressive layer 4. The gap between any two adjacent crack-resistant mortar blocks 41 is no more than 5 cm, and the shock-absorbing buffer blocks 42 are interference-fitted between the adjacent crack-resistant mortar blocks 41.

[0027] The second buffer layer 5 uses EPDM rubber pads.

[0028] Waterproof layer 8 is a two-component modified acrylic layer.

[0029] The silicon PU layer 6 uses materials with a molecular weight of not less than 1.8 × 10⁶. 5 It is made of silicone PU material.

[0030] The upper surface of the silicone PU layer 6 is also inlaid with raised anti-slip texture 7, which enhances friction and prevents slipping. The anti-slip texture 7 is formed by wavy stripe-like spacing of PU material.

[0031] The thickness of the first buffer layer 3 is not less than the thickness of the first compression-resistant layer 2, nor less than the thickness of the second compression-resistant layer 4. In this embodiment, the thickness of the first buffer layer 3 and the second compression-resistant layer 4 is approximately 3-4 mm each, the thickness of the first compression-resistant layer 2 is approximately 6-8 mm, and the thickness of the second buffer layer 5 is also approximately 6-8 mm.

[0032] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. For those skilled in the art, this utility model can have various modifications, combinations, and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A durable and collapse-resistant silicone PU sports court, characterized in that, From bottom to top, it includes: a compacted concrete layer (1), a first compressive layer (2), a first buffer layer (3), a second compressive layer (4), a second buffer layer (5), and a silicone PU layer (6); the first compressive layer (2) is formed by crack-resistant mortar; the second compressive layer (4) is formed by a number of crack-resistant mortar blocks (41) arranged in an array at intervals and filled by shock-absorbing buffer blocks (42); the first buffer layer (3) and the second buffer layer (5) are both made of rubber or plastic.

2. The durable and collapse-resistant silicone PU court according to claim 1, characterized in that: In the second compressive layer (4), the volume of the crack-resistant mortar block (41) accounts for no less than 75% of the volume of the second compressive layer (4); the shock-absorbing buffer block (42) is filled between two adjacent crack-resistant mortar blocks (41) with an interference fit.

3. The durable and collapse-resistant silicone PU court according to claim 1, characterized in that: The first buffer layer (3) is a styrene-butadiene rubber pad or an EPDM rubber pad.

4. A durable and collapse-resistant silicone PU court according to claim 1, characterized in that: The thickness of the first buffer layer (3) is not less than the thickness of the first pressure-resistant layer (2) and not less than the thickness of the second pressure-resistant layer (4).

5. A durable and collapse-resistant silicone PU court according to claim 1, characterized in that: The second buffer layer (5) is a styrene-butadiene rubber pad or an EPDM rubber pad.

6. A durable and collapse-resistant silicone PU court according to claim 1, characterized in that: The crack-resistant mortar blocks (41) in the second compressive layer (4) are rhomboid; the gap between any two adjacent crack-resistant mortar blocks (41) is no more than 5 cm.

7. A durable and collapse-resistant silicone PU court according to claim 1, characterized in that: The shock-absorbing buffer block (42) in the second pressure-resistant layer (4) is a styrene-butadiene rubber block or an EPDM rubber block.

8. A durable and collapse-resistant silicone PU court according to claim 1, characterized in that: A waterproof layer (8) is provided between the second buffer layer (5) and the silicone PU layer (6), which has the function of preventing rainwater from seeping in.

9. A durable and collapse-resistant silicone PU court according to claim 1, characterized in that: The upper surface of the silicon PU layer (6) is also embedded with raised anti-slip textures (7), which enhance friction and prevent slippage.

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