Preparation method and preparation system of ultra-high molecular weight polyethylene fiber spinning solution

Abstract

The invention provides a preparation method and preparation system of an ultra-high molecular weight polyethylene fiber spinning solution, and belongs to the technical field of high polymer materials.The spinning solution is prepared from the following raw materials: ultra-high molecular weight polyethylene powder and a solvent, and the solvent adopts white oil; the mass percentage ratio of the ultra-high molecular weight polyethylene powder to the solvent is (1-50):100; the average molecular weight of the ultra-high molecular weight polyethylene powder is between 1,000,000 and 10,000,000; and the white oil is 10-80# white oil. According to the preparation method, ultra-high molecular weight polyethylene powder and white oil respectively enter the same process extruder for continuous process extrusion to obtain the spinning solution. The method has the advantages of short flow, low cost and simple process; the preparation system has the advantages of reasonable design and less equipment consumption; and when the preparation method and the preparation system of the efficient short-process ultrahigh-strength ultrahigh-molecular-weight polyethylene fiber spinning solution are used for preparing the ultrahigh-molecular-weight polyethylene fiber spinning solution, the production efficiency is high, the product quality is stable, and the product performance is high.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a method for preparing an ultrahigh molecular weight polyethylene fiber spinning solution and a preparation system thereof. Background technique [0002] UHMWPE gel spinning—ultra-high-molecular-weight polyethylene fibers prepared by ultra-stretching have been industrialized. With the expansion of production scale and the intensification of competition, the price and profit of UHMWPE fibers are getting lower and lower. . Domestic ultra-high molecular weight polyethylene fibers are always at the low-end level, and the fiber strength is at an average level of 30-32cN / dtex, which cannot compete with foreign high-end products of 38-40cN / dtex. [0003] Ultra-high molecular weight polyethylene fiber has the advantages of high strength, light weight and stable chemical properties, and is one of the special fibers. In the prior art, when the jelly spinning method is used for ...

AI Technical Summary

Problems solved by technology

In the above-mentioned preparation process, there are mainly the following disadvantages: one is that the process flow is cumbersome and there are many types of equipment; the other is that there are many manual operations, which leads to poor consistency in the production of jelly solution and affects production efficiency; Excessive shearing at high temperature will seriously degrade the raw material molecules, which will affect the final performance of the product

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