A kind of polyurethane spinning apron and preparation method thereof

Abstract

The invention discloses a polyurethane spinning rubber ring and a preparation method thereof, and belongs to the field of textile equipment. The polyurethane spinning rubber ring is molded by pouringa polyurethane material at a time, and the polyurethane spinning rubber ring is prepared from, by weight, 100 parts of prepolymer of diisocyanate and polyhydric alcohols, 7-15 parts of chain extender,0.5-5 parts of antistatic agent and 0-5 parts of color paste. The polyurethane spinning rubber ring and the preparation method thereof have the advantages that the pressed deformation resistance andwear resistance of the polyurethane spinning rubber ring are improved manifold, the demands of high speed and heavy pressurization of an existing spinning technology can be met, the service life of the polyurethane spinning rubber ring is several times than a butyronitrile spinning rubber, and the labor cost and production cost of the spinning industry are reduced; since the wear resistance and pressed deformation resistance of the polyurethane spinning rubber ring are improved, the wear time and deformation time of the surface of the rubber ring are prolonged, thereby improving the stabilityof the quality of spinning; since the elasticity of the surface of the polyurethane spinning rubber ring is good, the gripping force of the spun fiber is increased, so that the cladding surface of thefiber is increased, thereby being capable of obviously improving the quality grade of the spun yarn.

Description

technical field [0001] The invention belongs to the field of textile equipment, and in particular relates to a polyurethane spinning apron and a preparation method thereof. Background technique [0002] The spinning apron is an important part of the spinning drafting device. Its quality and performance directly affect the quality of the yarn. In order to help control the movement of the fiber strands during the drafting process, the spinning apron is required to have a good Elasticity, oil resistance, wear resistance and proper hardness, the spinning apron is composed of inner rubber layer, outer rubber layer and middle skeleton layer, the middle skeleton layer is generally composed of spiral cotton thread and nylon thread, and the inner rubber layer is required to have certain elasticity , hardness and appropriate coefficient of friction, the outer rubber layer requires a certain grip on the fibers. [0003] In recent years, with the continuous emergence of high-speed spin...

AI Technical Summary

Problems solved by technology

[0003] In recent years, with the continuous emergence of high-speed spinning equipment, the spinning speed has been increased by more than 10 times, which requires the spinning aprons used in spinning machinery and equipment to be more wear-resistant, oil-resistant, and anti-static. Excellent comprehensive performance. The spinning aprons currently on the market are all made of nitrile rubber as the main material, supplemented with other additives, and are made through mixing, filtering, extrusion, molding, and vulcanization. It can no longer meet the current requirements. Due to the requirements of high speed and heavy pressure in the spinning process, the outer rubber layer of the nitrile rubber spinning apron is easy to be concave, and the inner rubber layer is easy to be grooved. The quality of the spun variety fluctuates greatly. Due to its poor wear resistance and mechanical Low strength and poor elasticity lead to shortened replacement cycle of spinning aprons and increased consumption