Silicon Pu court material is a new type of basketball court material widely used in sports field in recent years. Its main components are polyurethane (PU) and silicone. The main characteristics are safety, environmental protection and good ductility. Excellent weather resistance and adaptability are widely used in different climate environments. The unique shock absorption and elastic properties are of profound significance for the prevention of sports injuries.
1. Foundation treatment: the foundation shall be smooth without cracks, peeling and other conditions, and the asphalt concrete shall have sufficient strength and compactness. If it is cement concrete base, a primer treatment shall be done on its surface. The new cement foundation shall be exposed to the sun for more than 20 days in the weather without precipitation until the water in the cement ground is fully evaporated; the old cement ground shall be polished and leveled to ensure that the ground is smooth and dust-free, and enhance the cohesion between the silicon Pu layer of the stadium and the cement ground.
2.
Elastic layer construction of silicon PU material construction:
Before the construction of the elastic layer, the construction of the elastic layer shall be carried out after the foundation treatment is carefully checked and confirmed. The elastic layer is a single component material, and only the diluent shall be used to adjust the appropriate construction consistency. The tooth scraper shall be applied to the base surface, and the thickness of each coating shall not exceed 2.0mm, and the interval of each coating shall be subject to the previous dry consolidation (generally about 10 hours, Depending on the weather) until the required thickness is reached. Pay attention to the leveling effect when applying. If the scratch marks cannot be leveled, add more diluent to ensure the surface leveling. If the temperature is low (＜ 10 ℃ and relative humidity is low ＜ 60% =, it is necessary to add (3 ~ 8%) water to mix evenly and then apply it for scraping, so as to accelerate the solidification of materials and reduce the interval time. The specific amount of water added depends on the site weather, and the construction shall be avoided under the sudden sunlight. After the elastic layer is dry and solid, the surface flatness shall be tested by the ponding method, and the ponding part shall be repaired and leveled. If there is any granular debris or accumulation on the surface, the grinding machine or other tools shall be used for finishing and leveling before the construction of the reinforcement layer.
3.
Surface construction of silicon PU material construction:
The surface layer is a two-component water-based material. The two components must be fully stirred and evenly mixed according to the specified proportion (group A: group B = 9:1 (weight ratio)) (the proportion is not allowed to affect the curing effect of the surface layer and directly affect the use performance of the surface layer). Add water to dilute the construction consistency, generally add 50-80% (tb-205 weight calculation, according to the actual situation on site), and spray in multiple layers with a special spray gun On the strengthening level. Need to add special sand with rough surface for spraying. The lowest temperature is lower than 5 ℃, which is not suitable for construction. After construction, it shall be kept for 10 hours without water immersion. Refer to the following practices for various courses:
A. Basketball court: it is divided into three layers of spraying, the first and second layers are added with 15% (tb-205 weight calculation) special sand, each layer is about 0.15kg, the third layer is not added with sand (the amount is about 0.1kg), when adding sand, first mix component A and special sand evenly, then add component B to mix evenly, and then add water to dilute; three layers of sand shall be added in the forbidden area within three seconds, one layer is not added with sand (four layers in total)
B. Tennis court: divided into three spraying, the first 30% sand, the second 20% sand, the third without sand.
C. Badminton, volleyball court: no sand spray three.
4. Marking: measure and locate according to the standard size, mark the boundary position, stick it on the court along both sides of the boundary with masking paper, brush it with special marking paint (tb-207) between masking paper, and tear off the masking paper after the surface is dry. As a two-component material, a and B must be fully mixed and evenly applied in two layers according to the specified proportion (A: B = 9:1). If the surface of the course is rough, the first layer can be brushed with 20% special sand for the surface layer to prevent seepage.
Features of silicon Pu basketball court:
Upper and lower shells
Full of hard characteristics, bring professional sports texture; with flexibility, effectively increase sports buffer, reduce ankle, joint, ligament damage.
Uniform rebound
The innovative upper and lower hard elastic structure of silicon Pu, the hard surface layer retains enough rebound support for the ball, matches the rebound characteristics of the elastic layer and the reinforcing layer, guarantees the rebound rate of the ball above 90%, and meets the requirements of professional sports for the ball sense, so as to effectively solve the defects of PU material such as soft surface sinkage, ball sticking, uneven rebound, etc.
Cushioning and shock absorption
Silicon Pu is an elastic system specially designed for sports, which provides effective buffer absorption and shock absorption protection for sports. The elastic layer absorbs the impact force through the instant of retraction, and the compressed potential after buffering forms the high rebound force through the reinforcement layer, effectively reducing the sports injury caused by the reaction force of ankle, joint and ligament.
Antiskid starting
The reasonable hard and rough surface layer designed by silicon Pu according to the ergonomics in motion, with moderate surface friction and elastic structure at the bottom layer, provides sufficient friction power for starting, changing direction, jumping and emergency stop in motion, effectively solves the sliding phenomenon caused by the wet surface, and ensures the comfort of feet in motion.
Variable direction movement
The innovative hard surface layer of silicon Pu provides sufficient physical basis for the smooth, multi-directional and rapid movement demand in the movement. The lower layer realizes the reasonable transition from hard to soft structure by adjusting the modulus of the elastomer, forming a professional movement structure with elastic in the hard but not soft.
Source: 18971153177 sports ground material manufacturer Wu Xinlong (wechat same number)
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Remarks: site design, materials, construction integration service manager Wu 18971153177!
Sports ground material manufacturers specializing in the production of plastic runway, EPDM safety mat, silicon Pu stadium, acrylic stadium, artificial lawn, epoxy flooring materials, products meet the requirements of gb36246-2018 and local standards, the company has municipal qualification level II, can provide customers with bidding, foundation, surface construction technical services, service hotline: 18971153177 Xiaowu (wechat same number)! More details can be found on the official website of Wu Xinlong, the manufacturer of sports ground materials: http://www.cnpaodao.com/
Air permeable plastic runway
1. All weather: the quality of any season and temperature difference shall be kept at a high level, which can be used after rain to improve utilization rate.
2. Fast construction: due to the use of special materials, the weather requirements for construction are not high, professional construction machinery is used, and the construction time is shortened.
3. Proper elasticity: porous molding material with moderate elasticity and counter elasticity to reduce sports injury.
4. Strong weather resistance: the special rubber particle surface can resist the pollution of ultraviolet ozone, sulphite and gas, and prolong the service life.
5. High cost performance: no particles on the surface, easy to maintain and save management costs.
Features of the air permeable runway:
The bottom layer is composed of adhesive bonded waste rubber particles, and the surface layer is sprayed with polyurethane particles mixed with rubber paste. Generally speaking, the main track of the air permeable school track is 13mm in color and the auxiliary area in red is 9mm in thickness, and the color is green. Besides other advantages, the air permeable plastic track can also be used all day. It is economical, low in price, and there is no bubble phenomenon. At the same time, it also reduces the investment of foundation funds. It is suitable for the construction of informal track and field fields in primary and secondary schools. The service life of air permeable plastic can reach more than 6 years.
Construction technology of permeable plastic runway
1. First of all, waterproof treatment shall be carried out for the cement foundation, and a layer of waterproof material shall be rolled coated, with the reference amount of 0.2kg/m2
2. Curing and maintenance for 24 hours. After the waterproof material is solidified, pave the bottom layer of the runway. The reference ratio of 3-4mm high elastic particles mixed with high-strength single component glue is 1:6.5, mix evenly and pour into the paver. The laying thickness is 10 mm. Curing and maintenance for 24 hours.
3. Then mix the air permeable surface material with 1-2 mmepdn particles of the same size into the spray gun of the spraying machine and tilt it to 60 ° for spraying in the same direction. After the spraying is completed and maintained for 24 hours, spray again in the opposite direction.
4. After 48 hours of curing and maintenance, the site can be marked.
5. The site can be put into use after 15 days of maintenance.
Hybrid plastic runway
The new national standard mixed structure is adopted for the mixed plastic runway material. The surface layer is Pu particles or EPDM weather resistant environmental protection color particles, and the parent is part of the rubber particles mixed with full PU. The construction process is simple, in line with international competition standards, and the standard thickness is 13mm.
Characteristics of mixed plastic runway: it can be used all day long. It can maintain high quality in any season and temperature difference. It can be used immediately after rain. It can increase the utilization time and improve the utilization rate of the site.
Elasticity: with moderate elasticity and resilience, it can reduce physical consumption and improve competition results.
Impact resistance: moderately absorb foot impact, reduce sports injury, long-term practice and competition are appropriate.
Weather resistance: it will not fade, pulverize or soften due to the pollution of ultraviolet, ozone and acid rain, and can keep its bright color for a long time.
Wear resistance: the wear resistance is less than 2.5%, meeting the needs of principals at all levels for time and high frequency of use.
Compression resistance: it will not be unable to recover elasticity due to the heavy pressure of track and field equipment.
Nail resistance: it will not be damaged by spikes or starting gear at the 100m starting point with the most frequent use of force.
Impact resistance: with strong elastic layer and buffer layer, it can absorb strong impact, and the surface will not be damaged.
Flatness: self leveling materials are used during construction, with flat surface, which can meet the requirements of particularly flat competition site.
Adhesiveness: special construction treatment, strong adhesiveness, can suppress the rise of water, no blistering, peeling and other phenomena.
Safety: it can prevent sports injury caused by falling.
Economy: easy to maintain and save management cost.
Color: special high elastic EPDM and Pu particles, soft surface color, granular surface, to prevent the reflection of dazzling light, beautiful and durable, and can use multi-color matching.
Plastic track
Features of all plastic track:
All weather use any season and temperature difference can maintain a high level of quality after rain can be used immediately to increase utilization time and improve site utilization.
Flexibility: moderate flexibility and resilience can reduce physical consumption and improve competition results.
Impact resistance: moderate absorption of foot impact to reduce sports injury, long-term practice and competition are suitable for direct use.
Weather resistance: it will not fade due to tight outer line, ozone, acid rain pollution, pulverize or soften, and can maintain its bright color for a long time.
Wear resistance: the wear resistance is less than 2.5% to meet the needs of principals at all levels for high frequency of use
Compressibility: not unable to recover elasticity due to the heavy pressure of track and field equipment
Nail resistance: it will not be damaged by spikes or starting gear at the 100m starting point with the most frequent use of force
Impact resistance: strong elastic layer and buffer can absorb strong impact surface without damage.
Flatness: the surface of self leveling materials used in construction can meet the requirements of particularly flat competition ground
Adhesiveness: special construction treatment with strong adhesiveness can suppress water rising without blistering, peeling and other phenomena.
Safety: it can prevent sports injury caused by falling.
Economy: the maintenance side makes and saves management cost.
Color: special high elasticity EPDM and PU particle surface mask, soft and granular surface, prevents the reflection of the glare rays from being beautiful and durable, and can be collocation with multi colors.
Construction technology of plastic track
(1) First, check the flatness of the foundation layer and level the concave and convex parts (for example, the cement concrete foundation needs pickling).
(2) Primer laying