Engineering polypropylene fibers made from polypropylene and a variety of organic and inorganic materials, special composite technology refined products in concrete to form a three-dimensional mesh supporting role to the chaotic distribution, which can increase the fracture toughness of concrete, improve impermeable crack resistance of concrete, the mortar, concrete works crack resistance, impermeable, abrasion resistance, insulation new ideal material.

So we must learn how to distinguish them.

Visual comparison method

High-quality fiber, the length of the neat, uniform thickness, color and light pale light. And less silk, silk pulp, coarse silk, silk, silk oil, silk and clumping or no impurities are of high quality; opposite inferior person.

Contrast water bath method

Take 500ml water into two cups, the same specifications were added to 0.4g of fiber, followed by stirring for 10 seconds after the observation, quality by uniformly dispersed and suspended in water; inferior to those who can not be uniformly dispersed or slug, suspended in water or water clusters under.

Odor identification method

High-quality fiber: green, tasteless non-irritating; poor quality fiber: pollution, Sauvignon strong irritant.

Moisture removal method

Inferior polypropylene fiber works contain some moisture (manpower alone is difficult to feel), dried by drying or method can measure its water content, although the low price of the fiber, but contains in selling water. Suppose a moisture content of 5%, then 1 kg fiber containing moisture in fact only 95% of the fiber, and the fiber price will be 1.05 times the original price.

Sunlight law

Inferior polypropylene fiber works, due to lower costs, did not go through UV treatment, and polypropylene fiber works in sunlight the next year or two will lose strength, so long-term low-grade polypropylene fiber works hard to play its role in the concrete . Just at the site of sampling (identification must be strictly consistent with the inspection of the construction site of the filament polypropylene fiber engineering short silk), after a long time the sun Ye Lu, and the tensile strength can detect the difference.

Detection

Materials produced from recycled polypropylene fiber engineering, the fiber: ① tensile strength is low, generally <350Mpa; ② elongation, is generally> 60%; ③ poor alkali resistance, since the concrete mix concrete and after hardening were strongly alkaline (pH≥12), in this environment the strength of the fiber will be gradually reduced, so that the concrete role will be small, simply can not improve the mechanical properties of concrete.

Written in the last words
We Jiangsu Sisiyuan Fiber Co., Ltd. has a professional R & D team, the introduction of advanced technology and equipment, committed to producing high-quality engineering fiber, high-strength fiber wire, high-strength polypropylene and other product lines! The company also further develop and grow, we look forward to win-win cooperation with you! Integrity, service, win-win development "is our business philosophy. Perseverance, the pursuit of perfection" is our entrepreneurial spirit.

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