What are the technical advantages of polypropylene high-strength fibre?
In various industrial wires of various synthetic fibers, high strength and impact resistance of polypropylene high strength and its flexibility and chemical resistance make it more competitive.
In addition, the production equipment of the polypropylene high-strength fibre is low, the price is cheap, the energy consumption, less environmental pollution, has a significant technical and economic advantage.
What are the factors affecting polypropylene high-strength fibre?
1, the effect of melt index
The melt index of the raw material represents a high low of the raw material molecular weight, and the amount of fibers increases in the same process conditions. When the molecular entanglement is large, the strength of the tensile fibers increases the molecular weight as the molecular weight is increased, and the molecular chain is easily pulled off, and the fiber intensity is reduced. Several different melt index raw materials were used during high-strength wire spinning process.
In the test textile process, the melt index of the raw material is different under completely identical process conditions, and the strength of its finished filament is different, and there is a certain regularity.
In the same spinning temperature, the same tensile number and its process parameters are also exactly the same conditions, the lower the melt index of the polypropylene slice, the higher the polypropylene high-strength fibre.
2, the effect of tensile factor
The stretching process of the initial fibers is to destroy the original structural form of the initial fiber, generate a new sequential structure, increase the activity of the macromolecular segment under the action of tensile stress and thermal effect, and various structural units slide the fiber. The axial orientation aggregation, rearrangement, increase the new binding point, so that the more molecular chains of the fibers are particularly good, and generate the regularities of the three-dimensional structure (ie crystalline), the fiber density increases with the increase of the draw ratio. .
As the tensile increase increases, the strength of the fibers increases, and the intensity of the tensile multiples is large.
What are the effects of polypr
