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What are the factors affecting the tensile force of polypropylene high strength yarn?

1. Influence of stretching multiple

The stretching process of fiber is destroyed the original structure of fiber morphology, generate a new sequence state structure, under the action of tensile stress and the thermal effect, increase the activity of the macromolecular chain segment, any structural unit gathered the fiber axial orientation, rearrange, adding new combining site, the more molecular chain in a particularly good stress in the fiber under state, The fiber density increases with the increase of tensile ratio.

With the increase of tensile ratio, the fiber strength increases, and the tensile ratio contributes greatly to the fiber strength.

2, the influence of melting index

The melting index of the raw material indicates the molecular weight of the raw material to a certain extent. Under the same technological conditions, the fiber amount increases. When molecular entanglement degree is high, the strength of tensile fiber increases with the increase of molecular weight. When molecular weight is low, the slip between molecular chains is easy to occur, which is manifested in the decrease of fiber strength. In the process of polypropylene high strength silk spinning, several materials with different melting index are used.

In the process of trial spinning, it was found that the strength of finished silk was different and showed certain regularity under the same technological conditions with different melting index of raw materials.

Under the same spinning temperature, the same drawing times and the same technological parameters, the lower the melting index of polypropylene slice, the higher the strength of polypropylene high strength yarn

"Hongyang" brand polypropylene high strength yarn products have small color difference, good color fastness, high strength, and are widely used in decorative belts, safety belts, marking lines, etc.The company's main product:  polypropylene high strength yarn , polypropylene filament, polypropylene air change yarn，polyester air change yarn, ribbon

Taixing Hongyang New Materials Technology Co., Ltd. has consistently adhered to the "excellent quality, customer first, quality service, adhere to the contract," the purpose, with high-quality products, good reputation, selling the country. Wholeheartedly with the domestic business win-win cooperation and common development!