Polypropylene coarse fiber for concrete and method for preparing same

Abstract

The invention relates to concrete used polypropylene coarse fiber and a preparation method thereof. The diameter or the equivalent diameter of a filament ranges from 0.08mm to 1.5mm with the corresponding titer of 40 to 14200 deniers, the fracture strength of more than 450MPa, the elastic modulus of more than 5000MPa and the breaking elongation of 10 percent to 30 percent. In the preparation method, polypropylene and the components of the polypropylene coarse fiber are dried to the extent that the weight is kept constant before the polypropylene and the components are mixed uniformly; after the mixture is extruded by the spinning die of a double screw extruder, the mixture is cooled in a water bath; subsequently, the mixture is graded and stretched for a plurality of times at the temperature higher than the glass transition temperature of polypropylene; on completion of the stretching, ordinary polypropylene spinning used oil solutions with the weight concentration of 5.0 percent are applied on coarse fiber bundles for thermoforming before the surface of the fiber is indented; finally, the fiber is cut and packaged according to required length. By adopting the concrete used polypropylene coarse fiber, the interface of the course fiber and a basal body has good acting force, thus improving the anti-cracking, the impermeability, the fold resistance, the toughness, the shock resistance, the freeze and melt resistance, the fire resistance, and the blast resistance of coarse fiber reinforced concrete.

Description

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine

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AI Technical Summary

Benefits of technology

This patented polymeric material called PolyProtein Concrete (PC) helps create stronger structures by adding small particles that help bond together different types of chemical agents like calcium chloride and sulfur dioxoranolite. These tiny particles also enhance adhesiveness when mixed into wet slurry containing aggregated sand grains. Additionally, this PC layer increases its ability to absorb heat from sunlight without losing moisture content due to reduced evaporation rates caused by melting salt crystals. Overall, these technical improvements make PCPC an ideal choice for use in construction projects where durable structural surfaces require greater rigidity than traditional methods.

Problems solved by technology

This patents describes various ways to combine different types of fibrous substances together like natural rubbers, cerams, pitch cements, and resin mixtures. These techniques help create stronger structures while maintaining their original characteristics over time. They involve mixing them separately without causing any issues associated with each individual component individually. Additionally, these techniques allow for better control over the distribution of the components within the mixture compared to previous approaches involving separate agents. Overall, these improvements make up an ideal solution for producing strong yet flexible compositions made from mixed fibers alone.