At present, most plastic seats are used in stadium stands. Under natural outdoor conditions, stadium seats are exposed to wind, sun and rain all year round, and are prone to fading, cracking, brittleness, and air powder under sunlight for a long time. and other problems, which will seriously affect the continued use in the later period and the overall aesthetic effect.
Commonly used stadium stands are made of plastic injection molded PP (high density polypropylene) or blow molded PP, HDPE (high density polyethylene). These materials have good stability and have excellent properties such as beautiful appearance, firm structure and not easy to deform, strong bearing capacity and long service life. However, under outdoor conditions, the molecular chain is prone to breakage, resulting in a series of problems such as discoloration, turtle shape, brittleness, and air powder. It is important to add light stabilizers to improve its weather resistance (heat resistance and cold resistance). This is the secret to the long-lasting color of outdoor bleacher seats.
Light stabilizer is an additive for polymer products (such as plastics, rubber, coatings, synthetic fibers), which can shield or absorb ultraviolet energy, quench singlet oxygen, and decompose hydroperoxides into inactive substances. , under the irradiation of light, the polymer can exclude or slow down the possibility of photochemical reaction, prevent or delay the process of photoaging, so as to achieve the purpose of prolonging the service life of polymer products.
The seat made of PP, after adding 3808PP5 UV absorber (a white to off-white particle in appearance), has excellent compatibility with polyolefins, does not frost, and hardly causes volatile organic compounds (VOCs). Emission, little effect on color, high solubility in polyolefin and good beauty stability, in addition, after adding 770 light stabilizer (a low molecular weight hindered amine light stabilizer with white knot particles), Can provide protection for thick parts. Excellent light stability protection, especially effective for PP thick parts, good mesh compatibility, easy to disperse.
After adding 944 light stabilizer to the seat made of HDPE, the product has good heat resistance and low volatility due to its large molecular weight. Because polyolefin thick products have good protective properties.
Finally, the coloring masterbatch of different colors is added. The high-quality masterbatch has high dispersion, strong capping force, good fluidity, great compatibility with materials and consistent stability, so that the coloring can be uniform and stable, and the quality of plastic seats can be improved. It also keeps the color long lasting.
yourease outdoor bleacher seat itself is made of imported HDPE (high-density poly-7-ene) or PP (high-density polypropylene) as raw material, which has good waterproof and impact resistance, good mechanical strength and chemical stability, color Professional high-quality coloring masterbatch is selected, which has fine particle size, high concentration, strong coloring strength, heat resistance and light resistance. It can maintain the quality of the seat while making the color lasting and beautiful. After adding high-quality light stabilizer and UV absorber with weather resistance, it can effectively absorb the free radicals generated by light and slow down the aging of polypropylene. It has good weather resistance (heat resistance and cold resistance), in line with the international standard GB/T16422.2-1999 “Plastic Aging Performance Test” standard, under light conditions for 1000h, the surface of the material does not change significantly, so the seat is outdoors. Colors can still last for many years.
yourease Sports has always been committed to the solutions for audience stands in stadiums and performing arts conference activity centers. To provide you with the whole process service from professional solution design to production, transportation, installation and after-sales maintenance. Your trusted grandstand seating expert!
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Post time: Jun-24-2022