Polypropylene staple fiber 
 Physical and chemical properties 
 Fiber types: bundle monofilament Specification: 3mm, 6mm, 9mm, 12mm, 15mm 
 Specific Gravity: 0.91 Tensile strength:> 400 Mpa 
 Acid and alkali: a high modulus of elasticity:> 3.5Gpa 
 Melting point: about 160 ° C fiber diameter: 48um 
 Thermal conductivity: very low ignition point: about 580 ℃ 
 Containing Humidity: <0.1% Security: non-toxic materials 
 Resistance to low temperature: -78 ℃ assay fiber properties did not change. 
 Anti-aging properties: fiber after a special anti-aging treatment. 
 Polypropylene staple fiber project 
 Polypropylene staple fiber can be widely used in the hub of water conservancy, hydropower stations, ports, docks, river, water channels, face rockfill dam, spillway, diversion tunnel, embankment reinforcement, slope reinforcement and repair of the dam surface concreting and shotcreting in . Housing under construction in the roof and basement crack waterproof, slabs and columns, beams crack, the crack resistance of the interior and exterior surface of the mortar, the seismic impact of the factory floor, easy to burst the site and building repair. Airport, municipal facilities, roads, bridges, etc. often impact on the structure of concrete and GRC products, the European component, art, sculpture, light wall, premixed mortar and other aspects. 
 Polypropylene staple fiber mortar / concrete cracking, impermeability, abrasion resistant, frost ability, antiknock ability and improve concrete workability. Tens of millions of fibers evenly distributed in the mortar / concrete, played the role of the good micro-reinforcement, so good to maintain the structural integrity, to avoid the structure subjected to impact damage, dispersed into many fragments, to prevent the structure corrosion of the reinforcement, can greatly extend the life of the project, reduce the maintenance costs of the project. 
 Polypropylene staple fiber content is 0.6-1.8 kg / cubic meters of mortar or concrete, is generally 0.9 kg / cubic meter of mortar or concrete. According to the engineering parts of the region, fiber content should be different content for the site of freezing and thawing relatively calendar harm geographical and abrasion calendar harm should be higher