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Polymer sand fiber free sound-absorbing mortar sound-absorbing material is a type of sound-absorbing lightweight sand that is sprayed onto the base layer by professional equipment, dried and formed into a three-dimensional mesh structure on the inside and a porous sound wave shaped sound-absorbing sand coating on the outer surface. The polymer coagulant is uniformly and extremely thin on the surface of all particles, forming a specific microstructure of coated particles.

Material characteristics: After the completion of the sand free fiber sound-absorbing mortar, it is naturally dried to form a smooth surface, uniform appearance distribution, and a continuous, non hollow, non cold bridge, seamless, elastic "skin like" spray coating; Spray coating for sound absorption and insulation; Overall seamless and well wrapped; Skin spray coating; Poly sand fiber free sound-absorbing mortar has rich texture, multiple color options, and beautiful and elegant decorative effects. Acoustic performance NRC ≥ 0.70, meets the A-level non combustible standard of China Building Materials Fire Protection Testing Center, and has an E1 environmental protection level. Due to the absence of fibers in the material, lightweight sand is used as sound-absorbing aggregate. In daily use, fibers will not fall off, and the texture is more delicate, suitable for sound-absorbing spraying on the ceiling of halls.

Project standard indicators

construction process

1. Grassroots treatment: Clean the surface of the building structure and use a brush to remove floating ash, soil, and other impurities.

2. Polymer sand fiber free sound-absorbing mortar: using professional spraying equipment, the first layer of polymer sand fiber free sound-absorbing mortar has a thickness of 5-10mm (depending on the construction site, the sound-absorbing mortar covers the entire building surface); After the first layer of sound-absorbing mortar is dried (at a temperature of 25 ℃, relative humidity of 50%, and a minimum drying time of 6 hours), the second layer of spraying should be carried out with a thickness of about 5-10mm. After the second layer of sound-absorbing mortar is dried (at a temperature of 25 ℃, relative humidity of 50%, and a minimum drying time of 12 hours), the third layer of spraying should be carried out with a thickness of about 5-10mm (based on the site conditions, to ensure a smooth overall surface effect).

Spraying effect of fiberless sound-absorbing mortar with poly sand