Production method of blended yarn containing flame-retardant polyester fibers and polyarylate fibers

Abstract

The invention relates to a production method of a blended yarn containing flame-retardant polyester fibers and polyarylate fibers, which comprises the following steps of: respectively carrying out siro spinning on the flame-retardant polyester fiber roving and polyarylate fiber roving to obtain the blended yarn; wherein the flame-retardant polyester fiber roving is prepared from flame-retardant polyester fibers through a pretreatment process, an opening and picking process, a cotton carding process, a second drawing process and a roving process; the polyarylate fiber roving is prepared from polyarylate fibers through a pretreatment process, an opening and picking process, a cotton carding process, a combing process, a drawing process and a roving process. According to the production methodof the blended yarn containing the flame-retardant polyester fibers and the polyarylate fibers, the combing process parameters are adjusted, the cylinder needle number is reduced, the cylinder toothdensity is reduced, the cylinder carding dead zone length is increased, the combing effect of the flame-retardant polyester fibers is ensured, meanwhile, the condition that the hook part of the flame-retardant polyester fiber is combed by the combing needle is reduced, the fiber damage is avoided, the combing cotton drop is reduced, and the prepared blended yarn has excellent mechanical property and flame retardant property.

Description

technical field [0001] The invention belongs to the technical field of blended yarns, and relates to a production method of a blended yarn containing flame-retardant polyester fibers and polyarylate fibers. Background technique [0002] Flame-retardant polyester fibers are prone to melting and dripping when they are burned. As the raw material of flame-retardant textiles, they will cause secondary injuries such as burns to the human body, so their application in textiles is limited. In addition, the strength of the existing flame-retardant polyester staple fiber blended yarns on the market is not high enough to be suitable for occasions that require extremely high mechanical properties, such as national defense and military, marine engineering, and energy development. [0003] The second issue of "Shanghai Textile Science and Technology" in 2013 published the article "Research on the Properties of Aramid 1313 / Flame Retardant Polyester Blended Yarn". Thermal properties of bl...

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Problems solved by technology

[0008] The purpose of the present invention is to solve the problem of poor mechanical properties and droplet resistance of flame-retardant polyester fiber blended yarn in the prior art, and to provide a production method of blended yarn containing flame-retardant polyester fiber and polyarylate fiber , the present invention selects polyarylate fiber with self-flame retardancy and high strength to blend with flame-retardant polyester fiber, and simultaneously the blended yarn is also passed through the combing process to improve the quality of the flame-retardant polyamide sliver, and in the combing process The length of the dead zone of cylinder carding is adjusted to reduce the damage to the fiber during the combing process, and finally a blended yarn with high strength, good mechanical properties at high temperature and excellent droplet resistance is obtained

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