Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of ultrahigh molecular weight polyethylene fiber

An ultra-high molecular weight, polyethylene fiber technology, applied in the direction of single-component polyolefin rayon, spinning solution preparation, wet spinning, etc. structure and other problems, to achieve the effect of reducing the dosage and reducing the fracture strength

Active Publication Date: 2011-08-31
CHANGSHU SUPERFIBER
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the structure of the jelly fiber will be destroyed if the super-stretching ratio is too high, resulting in uneven drafting, which makes the finished fiber easy to break

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of ultrahigh molecular weight polyethylene fiber
  • Preparation method of ultrahigh molecular weight polyethylene fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] see figure 1 and figure 2 The main difference between the method of the present invention and the method of the prior art is that the present invention performs primary drawing and secondary drawing in sequence before extraction. Wherein, the multiple of primary drafting can be 2 to 8 times, and the multiple of secondary drafting can be 1.1 to 3 times, and the thermal stretching multiple of the present invention is lower than the prior art, and its range is 30 to 45, Therefore, the obtained fiber of the present invention still maintains its high breaking strength while having a relatively low denier. The present invention will be described in further detail below in conjunction with specific embodiments.

[0013] A preparation method of ultra-high molecular weight polyethylene fibers, comprising the steps of:

[0014] (1), prepare the frozen collagen silk of ultra-high molecular weight polyethylene: ultra-high molecular weight polyethylene (viscosity-average molecul...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
boiling pointaaaaaaaaaa
modulusaaaaaaaaaa
Login to View More

Abstract

The invention relates to a method of preparing ultrahigh molecular weight polyethylene fiber through gel spinning method. The method comprises the following steps: (1) preparing gel protofilament of ultrahigh molecular weight polyethylene; and (2) processing the gel protofilament through extracting, drying and hot drawing to obtain the ultrahigh molecular weight polyethylene fiber. The method is characterized in that the method also comprises the step of pre-drawing the gel protofilament obtained in the step (1) before the step (2), wherein the pre-drawing time is 2.2-24 times and the total hot drawing time in the step (2) is 30-45 times. The method of the invention can be used to obtain ultrahigh molecular weight polyethylene fiber product with low size and high breaking strength and theproduction cost is low.

Description

technical field [0001] The invention relates to a preparation method of ultra-high molecular weight polyethylene fiber. Background technique [0002] Ultra-high molecular weight polyethylene fiber (UHMWPE) is a high-performance fiber that was successfully developed in the late 1970s and entered industrialization in the early 1980s. It is mainly produced by gel spinning. In the prior art, the main steps of the jelly spinning method are as follows: the stock solution made of ultra-high molecular weight polyethylene powder and an appropriate solvent is extruded through a screw extruder, the spinneret holes are formed, and solidified in a water bath to obtain polyethylene fibers The frozen collagen filaments, the frozen collagen filaments are extracted, dried, and superheated to obtain finished fibers, wherein, fibers with low denier or small denier are obtained by increasing the stretching ratio of the nozzle. The disadvantage of this method is that the structure of the jelly...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): D01D1/02D01D5/06D01D5/12D01F6/04
Inventor 许海霞胡盼盼刘兆峰
Owner CHANGSHU SUPERFIBER
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com