Preparation method of high-speed polyester POY (Pre-Oriented Yarn) spinning oil agent

Abstract

The invention provides a preparation method of a high-speed polyester POY (Pre-Oriented Yarn) spinning oil agent. A pure oil agent except for water in the oil agent is composed of a main body part and an additive, wherein the main body part includes over 20 kinds of polyether compounds and the rest components belong to non-polyether additive. The preparation method comprises the following steps: firstly, metering the main body component of the oil agent, pumping the main body component into a reaction kettle in vacuum, stirring, heating to 50-70 DEG C, stirring, metering the additive components and water, and adding the metered additive components and water into the reaction kettle, stirring, heating to 70-80 DEG C, keeping the temperature for 40-50min, closely filter-pressing a product, and subpackaging the product after the product is checked to be qualified. The oil agent prepared by using the method provided by the invention is suitable for high-speed polyester POY spinning and a production process of a subsequent deform yarn; the oil agent endows the fiber good smoothness and bundling and favorable total viscosity-temperature and viscosity-concentration characteristics; the fiber is few in broken filament breaks, even and uniform in dyeing in the later drafting process; the smoke formation amount of a hot processing tank is small, generated white powder and coke amount are small and the cleaning period is long; a product is good in quality and stability.

Description

technical field [0001] The invention relates to an oil agent used in the spinning process of synthetic fibers, in particular to a preparation method of a polyester POY high-speed spinning oil agent. Background technique [0002] In my country, the trade name of PET polyester (polyethylene terephthalate) silk fabrics is called polyester. Polyester spinning generally adopts high-speed spinning-drawing and twisting process in China, that is, pre-oriented yarn or partially oriented yarn (POY, Pre-Oriented Yarn or Partially Oriented Yarn) and stretched textured yarn (DTY, Draw Texturing Yarn). Step combination, referred to as POY-DTY process. In order to make polyester POY have a higher degree of orientation and crystallinity, the spinning speed is usually in the range of 3000~4600 m / min. The faster the spinning speed, the higher the production efficiency. Polyester POY high-speed spinning requires that the spinning oil used should have good smoothness, bunching and antistatic ...

AI Technical Summary

Problems solved by technology

[0004] At present, the common problems of polyester POY high-speed spinning oils are: the viscosity-temperature-viscosity characteristics of many polyether monomers are not ideal. Low viscosity, the oil on the fiber will splash on the hot roller under the action of centrifugal force. Long-term heating will easily lead to the formation of coke, which will affect the heat conduction efficiency of the heater and cause uneven stretching of the tow. The increase of fluff and broken ends affects production

However, monomers with smaller molecular weights generally have viscosity jumps, resulting in excessive viscosity fluctuations in the high-speed spinning process, which will also cause uneven oiling, and a large amount of coking on the hot plate will affect the quality of the silk.

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