Polyurethane elastic fiber finishing agent

Abstract

The invention discloses a polyurethane elastic fiber finishing agent, comprising the following components in parts by weight: 75.0-98.8 parts of at least one substrate selected from silicon oil and white mineral oil, 1.0-10.0 parts of isomerous high-carbon alcohol, 0.1-10.0 parts of MQ silicon resin of which the pour point is smaller than or equal to 100 DEG C and 0.1-5.0 parts of trisiloxane polyether organic phosphate. The finishing agent enables the polyurethane elastic fiber to have favorable antistatic property, lubricating property and grating balancing property in the filament reeling process, so that the polyurethane elastic fibers reeling at high speed have stable tension and do not skid or cause the filament roller to mess up, thereby endowing the polyurethane elastic fibers with favorable reeling property. The finishing agent also enables the polyurethane elastic fibers rolled on the roller to have enduring anti-adhesion insulation property, so that the polyurethane elasticfibers have favorable cocoon reelability and thorough root unreeling property in the downstream unreeling process, thereby endowing the polyurethane elastic fibers with favorable unreeling property.

Description

technical field [0001] The invention relates to a treatment agent for polyurethane elastic fibers, in particular to a treatment agent for dry-spun polyurethane elastic fibers. technical background [0002] my country introduced Japanese Toyobo technology in 1989, and successfully realized the industrialized production of domestic polyurethane elastic fiber dry spinning in Yantai Spandex Co., Ltd. for the first time. The performance of polyurethane elastic fiber is excellent. In addition, my country’s population ranks first in the world. It is a big country in textile production, consumption, processing and export. After nearly two decades of development, the production scale of polyurethane elastic fiber dry spinning in China has ranked first in the world. The annual output is more than 200,000 tons. Polyurethane elastic fiber treatment agent is extremely important in terms of technology and economy for polyurethane elastic fiber molding. The oiling amount of the treatment a...

AI Technical Summary

Problems solved by technology

Some of the above-mentioned treatment agents have insufficient antistatic performance or uneven distribution, which causes the tension between the polyurethane elastic fiber threads during the packaging process to be unstable, resulting in messy package threads; Slipping on the reel results in messy package yarn; some anti-sticking durability is insufficient, once the yarn package is stored for more than 3 to 5 months, due to the lack of oil film strength of silicone oil as an anti-sticking agent component and migration over time , because the elastic extrusion force produced by the close contact between the silk fibers gradually increases towards the root, the treatment agent between the silk fibers at the root is extruded as time goes on, and the remaining amount is less as it is squeezed towards the root. The combined effect of these factors increases the contact between the root fibers and the degree of reaction of the residual isocyanate groups on the fibers, which leads to an increase in the unwinding tension of the root silk fiber of the silk package, until it cannot be completely unwound and causes poor unwinding performance.

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