Polypropylene yarn, having positive and practical features, soon attracted the attention of manufacturers in various industries and was used in the field of production. Polypropylene fibers, after polyester, nylon and acrylic, are the fourth synthetic fibers in different production industries. And one of the most important features of this yarn is its low cost, which has attracted the attention of producers of other industries and consumers. At the time of initial production, polypropylene yarns had little resistance to ultraviolet rays, this is a thing of the past, and after many tests, researchers have increased its resistance to this radiation by adding a series of materials and this weakness has also been overcome. destroyed.
How to Produce Polypropylene Fibers
Polypropylene fibers are produced by propylene polymerization as a linear polymer. The raw material for the production of polypropylene fibers is propylene (CHCH = 3CH2), which is formed as a side product in the production of ethylene and by breaking the oil molecule in the petrochemical industry. Liquid gases containing propylene are another material of this source. Medium molecular weight fibers are used in the textile industry. Polypropylene fibers with high molecular weight are used as fibers with high efficiency and strength. Since the melt flow index and average molecular weight are related to each other, the appropriate melt flow index in the production of textile fibers is 15-25 grams. per 10 minutes, and for fibers with high efficiency, it is 5-3 grams per 10 minutes.
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use of polypropylene yarn
Polypropylene yarn has many uses, but the most used is in sanitary purposes and the production of micron spun yarn filters and all kinds of sacks. These threads, which are made of polypropylene, are known as one of the most used equipment in water purification in the reverse osmosis and desalination industry. In this way, the high density of fibers causes particles to remain on the external surface of the device and water particles that are less than 5 microns pass through the surface and enter the water purification system. This process is called micron filtration. Polypropylene fibers are also widely used in non-woven textiles. These fibers are used in air filters, liquid filters, gas filters, oil absorbers in the oil industry to separate oil from sea water and air conditioning equipment filters. to repel sweat), face masks for patients and hospitals, covering walls, concrete, table tops and other items.