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Ultrahigh molecular weight polyethylene fiber flat wire and preparation method thereof

A technology of ultra-high molecular weight and polyethylene fiber, which is applied in the direction of single-component polyolefin rayon, fiber treatment, wet spinning, etc., can solve the problems of limited application, achieve the goal of reducing consumption, reducing cost, and shortening the process flow Effect

Inactive Publication Date: 2016-11-23
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has a significant effect on the surface modification of UHMWPE fibers, while maintaining the strength of the ultra-high molecular weight polyethylene fiber itself, and the bonding performance between the fiber and the resin matrix is ​​significantly improved, but this method is largely limited due to intermittent operations. its application

Method used

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  • Ultrahigh molecular weight polyethylene fiber flat wire and preparation method thereof
  • Ultrahigh molecular weight polyethylene fiber flat wire and preparation method thereof
  • Ultrahigh molecular weight polyethylene fiber flat wire and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] (1) The molecular weight is 1.5×10 7 g / mol ultra-high molecular weight polyethylene powder and a certain amount of decahydronaphthalene to prepare a mixed solution with a mass concentration of ultra-high molecular weight polyethylene of 10%, and add hindered phenolic antioxidant 1010 and organic water-soluble lubricant 2 -Methyl dodecanoic acid, the contents are respectively 5% and 10% of the quality of ultra-high molecular weight polyethylene to obtain a suspension mixture;

[0047] (2) Heat and swell the suspension mixture obtained in step (1) at 130°C for 10 minutes, inject the swollen and uniformly dispersed suspension mixture into a twin-screw extruder and extrude, extrude the jelly-like filaments at the die through air and The primary jelly fibers are formed after two stages of cooling in the water bath;

[0048] (3) Two-roll primary pressing with special pressure rollers made of corrosion-resistant metal substrates. The rollers are located in the air cooled by a...

Embodiment 2

[0051] (1) The molecular weight is 3.0×10 7 g / mol ultra-high molecular weight polyethylene powder and a certain amount of paraffin oil to prepare a mixed solution with a mass concentration of ultra-high molecular weight polyethylene of 5%, and add phosphite antioxidant 618 and sodium chloride, the contents are respectively 1% and 15% of the quality of ultra-high molecular weight polyethylene to obtain a suspension mixture;

[0052] (2) Heat and swell the suspension mixture obtained in step (1) at 120°C for 10 minutes, inject the swollen and evenly dispersed suspension mixture into a twin-screw extruder for extrusion, and extrude the jelly-like filaments at the die through air and The primary jelly fibers are formed after two stages of cooling in the water bath;

[0053] (3) Multi-roller 3-stage pressing with special pressure rollers made of silicone rubber substrates, the rollers are located in the air cooled by a water bath, the diameter of the rollers is 20cm, the temperatu...

Embodiment 3

[0056] (1) The molecular weight is 4.5×10 7 g / mol ultra-high molecular weight polyethylene powder and a certain amount of mineral oil are formulated into a mixed solution with a mass concentration of ultra-high molecular weight polyethylene of 15%, and sulfur-based antioxidants 1035 and 1-allyl-3- Methylimidazolium chloride salt ionic liquid, the content of which is 2% and 1% of the mass of ultra-high molecular weight polyethylene, respectively, to obtain a suspension mixture;

[0057] (2) Heat and swell the suspension mixture obtained in step (1) at 110°C for 10 minutes, inject the swollen and uniformly dispersed suspension mixture into a twin-screw extruder and extrude, extrude the jelly-like filaments at the die through air and The primary jelly fibers are formed after two stages of cooling in the water bath;

[0058] (3) Using engineering plastic (such as PC) base material special pressure roller with single roller and flat plate and double roller composite 5-stage pressi...

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Abstract

The invention belongs to the technical field of composite materials, and discloses an ultrahigh molecular weight polyethylene fiber flat wire and a preparation method thereof. The preparation method comprises the steps of adding ultrahigh molecular weight polyethylene powder and an additive into a solvent to prepare suspension mixed liquid, heating for swelling at the temperature of 100-150 DEG C, then injecting the product into a twin-screw extruder for extruding, and cooling to form a primary gel fiber; pressing the primary gel fiber by using a press roller, and forming a ribbon silk having a pit structure so as to obtain a primary flat silk fiber; prestretching and winding the obtained primary flat silk fiber, then extracting, drying and carrying out super multiple thermal drawing to obtain the ultrahigh molecular weight polyethylene fiber flat wire. According to the preparation method, the pit structure is pressed on the surface of the ultrahigh molecular weight polyethylene fiber flat wire by means of the press roller, i.e., a mechanical method, so that the adhesive property of an ultrahigh molecular weight polyethylene fiber surface is improved; the ultrahigh molecular weight polyethylene fiber flat wire is simple and environmental-friendly in preparation technology, easy in control of production process and low in requirements for production equipment, thus being easy in industrial popularization and use.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a flat ultra-high molecular weight polyethylene fiber and a preparation method thereof. Background technique [0002] Ultra-high molecular weight polyethylene fiber (UHMWPE fiber) is a high-performance fiber that appeared after carbon fiber and aramid fiber. It was successfully developed in the late 1970s and entered industrialization in the early 1980s. It is a high-strength, high-modulus high-performance fiber prepared from ultra-high molecular weight polyethylene through gel spinning-thermal stretching. [0003] The relative molecular mass of ultra-high molecular weight polyethylene fiber is 1 million to 6 million. The molecular shape is a linear extended chain structure. The degree of orientation is close to 100%. The specific strength is equivalent to about 15 times that of high-quality steel and 2 times higher than that of carbon fiber. It is 40% hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/06D01D10/00D01F6/46
CPCD01D5/06D01D10/00D01F6/46
Inventor 严玉蓉杨苏邯江的渊邱志明陆信航
Owner SOUTH CHINA UNIV OF TECH
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