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Preparation method of ultra-high molecular weight polyethylene fiber with strength higher than 39 cN/dtex

An ultra-high molecular weight, polyethylene fiber technology, applied in the field of polyethylene fiber, can solve the problems of inability to meet the requirements of user product strength and uniformity, low product quality, inability to compete with international companies, etc., to shorten the length of the production line, improve the Extraction ability, the effect of reducing emulsification

Pending Publication Date: 2021-10-15
山东莱威新材料有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In China, although there are many manufacturers, the product quality is low, unable to compete with international companies, and unable to meet users' requirements for product strength and uniformity

Method used

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Embodiment Construction

[0017] Preferred embodiments of the present invention are described below. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention, and are not intended to limit the protection scope of the present invention.

[0018] The present invention provides a method for preparing ultra-high molecular weight polyethylene fibers with a strength greater than 39cN / dtex. The preparation method is as follows:

[0019] (1) Mix and stir evenly according to the set materials, send the mixed ingredients into the twin-screw extruder, mix the materials through the twin-screw extruder, make the materials reach a molten state, pass through the melt filter and spray After the silk board, the nascent ultra-high molecular weight polyethylene fiber is formed;

[0020] (2) The ultra-high molecular weight polyethylene fiber of nascent ecology enters extraction tank, utilizes extractant to replace the white oil on fiber s...

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Abstract

The invention discloses a preparation method of ultra-high molecular weight polyethylene fiber with the strength higher than 39 cN / dtex, and relates to the technical field of polyethylene fibers. The preparation method comprises the following steps of mixing and uniformly stirring set materials, feeding the mixed materials into a double-screw extruder, mixing the materials by the double-screw extruder to enable the materials to be in a molten state, and forming nascent-state ultra-high molecular weight polyethylene fiber after the molten materials pass through a melt filter and a spinneret plate; making the nascent-state ultra-high molecular weight polyethylene fiber enter an extraction tank, and replacing white oil on the surface of the fiber by an extraction agent in the extraction tank, so that ultra-high molecular weight polyethylene fiber containing a small amount of white oil or not containing white oil is obtained; carrying out hot stretching on the extracted ultra-high molecular weight polyethylene fiber; and collecting the ultra-high molecular weight polyethylene fiber subjected to hot stretching by using a fiber collecting device, and performing winding and forming to form the final product. The strength of the obtained fiber is greatly improved, and the average value reaches 39 cN / dtex or above.

Description

technical field [0001] The invention relates to the technical field of polyethylene fibers, in particular to a preparation method of ultra-high molecular weight polyethylene fibers with a strength greater than 39cN / dtex. Background technique [0002] Carbon fiber, aramid fiber, and ultra-high molecular weight polyethylene fiber are three high-performance fibers in the world today. Among them, ultra-high molecular weight polyethylene fiber is currently the fiber with the highest specific strength and specific modulus in the world. The specific strength is more than ten times that of steel wire with the same cross section, and the modulus reaches 87-172GPa. The strength and modulus are higher than that of aramid fiber, second only to special Carbon fiber is a fiber material that the country focuses on. [0003] Ultra-high molecular weight polyethylene fiber is a high-performance fiber product. Its high strength, light weight, and good stability make it widely used in many spe...

Claims

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Application Information

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IPC IPC(8): D01F6/04D01F11/06D01D5/08D01D5/12D01D10/02
CPCD01F6/04D01F11/06D01D5/08D01D5/12D01D10/02
Inventor 任意
Owner 山东莱威新材料有限公司
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