EPDM (Ethylene-propylene-diene monomer) particles are made of ethylene propylene diene monomer rubber after crushing and screening. They have strong chemical stability and excellent weather resistance, and are widely used in sports venues, children's facilities and other fields.
-High elasticity and cushioning: the porous structure inside the particles can absorb the impact of movement (shock absorption rate is more than 50%), reduce the injury of falling, suitable for running track, basketball court and other sports scenes.
-Weather resistance and aging: can withstand-40℃ to +120℃ temperature difference, anti-ultraviolet, ozone and rain erosion, outdoor service life up to 8-10 years.
-Environmental safety: non-toxic and odorless, SGS test (heavy metal content less than or equal to 0.1mg/kg), formaldehyde release is close to 0, in line with the new national standard GB 36246-2018.
-Color lasting: organic pigment dyeing, color fastness is more than 8 grades, long-term exposure does not fade, common colors are red, green, blue, black and so on.
-Convenient construction: mixed with glue (such as PU glue), it can be spread into a flat elastic layer, the bonding strength is greater than or equal to 0.5MPa, and it is not easy to fall off.
Product parameter
|
Color |
Thickness |
Density |
Rebound degree |
Tensile strength |
Stretch rate |
Wear resistance |
|
Red, orange, yellow, green, blue, purple, etc. |
5-13 mm |
0.9- 1.2g |
≥90% |
≥3.0MPa |
≥400% |
≤0.08/1.61km |
Construction process of double-layer EPDM
Sports surface layer in school:
-The construction shall be the same as that of a single layer (level, dry and free of oil), but the slope of the foundation shall be checked additionally (drainage slope shall be greater than or equal to 2%) to ensure that no water accumulates after rain.
-The cement base should be painted with special primer (to enhance the adhesion), and the asphalt base can be directly constructed.
Materials and tools
-Base material: Large EPDM granules (3-5mm) + High elasticity adhesive (granules: adhesive = 5:1, focusing on cushioning).
-Surface material: Small EPDM granules (1-2mm) + Wear-resistant adhesive (granules: adhesive = 4:1, focusing on slip resistance).
-Tools: Add a specialized scraper for the base layer (with deeper teeth), color separation plates, and a thickness measuring instrument.
Bottom construction (buffer layer)
1,Mixing and laying-Mix the large particle size particles and glue in a ratio of 5:1 and stir for 8-10 minutes until uniform (add a small amount of catalyst to cope with low temperature).
-Spread: use the "cross cross method" to scrape (first horizontal and then vertical), use 10-13mm thick pad to control the thickness of the bottom layer (common thickness is 10-15mm), and compact the corners with a trowel.
2,Solidification and detection-After 24 hours of curing at room temperature, the probe is used to detect the compactness of the bottom layer, and there is no softening or collapse on the surface; if there is local depression, it needs to be repaired with the same material.
Surface layer construction (wear-resistant layer)
1.,Bottom pretreatment-Clean the dust on the bottom surface with a broom, and grind the protruding particles flat if necessary; after drying, a thin layer of glue (interfacial agent) can be applied to enhance the bonding strength of the surface layer.
2.,Mixing and laying-Mix: small particle size particles and glue are mixed in a ratio of 4:1, and stirred for 5 minutes to a fine paste. The surface layer with bright color should be strictly mixed in accordance with the color code.
-Block paving: draw lines according to the design pattern, use panels to isolate different color areas, spread from inside to outside (avoid stepping on the area that has been constructed), and control the thickness at 3-5mm.
3,Surface treatment and maintenance-After laying, the surface is lightly pressed with a defoaming roller to eliminate bubbles and polish; cure at room temperature for 48 hours, during which contact with water is strictly prohibited (the surface curing is slower than the bottom layer).
Hot Tags: two layers of EPDM sports surface layer for school, China two layers of EPDM sports surface layer for school manufacturers, factory, anti slip rubber flooring, rubber carpet tiles, rubber surface, Two Layers Of EPDM Sports Surface Layer For Amusement Park, Two Layers Of EPDM Sports Surface Layer For Kindergarten, Two Layers Of EPDM Sports Surface Layer For Park
