A polypropylene fiber function

        Quality fiber composite made from high quality virgin fiber grade polypropylene material with special additives made;
        And usually defective fiber composite made from recycled materials and are usually powder or textile additives.

    Second, the cost of polypropylene fibers
       Recycled polypropylene material compared with virgin polypropylene material, offer lower.

    Third, the polypropylene fibers to identify good and bad ways
        1. bath Comparative method:
        Take 500ml of water into two cups, respectively, participated in the same standard 0.4g fiber, mixing for 10 seconds after investigation, those lax quality uniform, suspended in water; defective can not even lax or lumps, clusters suspended in water or underwater.
        2. odor discrimination law:
       Quality fiber: environmental protection, tasteless no effect; defective fiber: pollution, rich and strong influence.
        3. sunshine law:
        Defective polypropylene fibers, because the decline in the capital, the foundation has not been disposed of UV-resistant, and polypropylene fibers in the sunshine the next year or two will lose strength, so defective polypropylene fiber is difficult long time to develop their effect in concrete . As long as at the site of sampling (To distinguish severe censorship of the construction site of the filament and staple fiber polypropylene fibers together), a long-time sun Ye Lu, then you can detect differences in tensile strength.
        4. Remove the water law:
        Some defective polypropylene fiber-rich water (manpower alone is difficult to feel), after drying or dry way to measure its water content, although the fibers offer low, but it contains in selling water. Assumed moisture content of 5%, then 1 kg of fiber-rich water is actually just 95% of the fibers, and fibers offer will be 1.05 times the original offer.
        5. cf visual method:
        High-quality fiber, regular length, thickness uniformity, color bright light pale. And little silk, silk syrup, thick silk, silk, oil silk, silk knot groups and no impurities or those of high quality; on the contrary were defective.
        6. Detection method:
        Materials produced from recycled polypropylene fiber, the fiber:
① low tensile strength, typically <350Mpa;
② elongation, typically> 60%;
③ poor alkali resistance, because the mixing of concrete and hardened concrete were strongly alkaline (pH≥12), in this environment the strength of the fiber will gradually decrease, so that play in the concrete effect will be small, the concrete foundation can not progress mechanics function.