Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for Removing Residual Solvent from High Performance Polyethylene Fiber

A polyethylene fiber and residual solvent technology, which is applied in the field of removal of residual solvent in high-performance polyethylene dry spinning fiber products, can solve problems such as residual solvent, and achieve increased residence time, uniform fiber fineness, and excellent performance. Effect

Active Publication Date: 2021-08-13
SINOPEC NANJING RES INST OF CHEM IND CO LTD +1
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solve the problem of solvent residue in polyethylene fiber and broaden the application field

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
  • Method for Removing Residual Solvent from High Performance Polyethylene Fiber
  • Method for Removing Residual Solvent from High Performance Polyethylene Fiber
  • Method for Removing Residual Solvent from High Performance Polyethylene Fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] High-performance polyethylene fiber dry-spun fiber products, constant temperature drying and drawing hot box temperature 145 ℃, internal wind speed of drawing hot box 0.5m / s, initial seven-roller speed 1m / s, solvent residue in fiber 1% ( Mass percentage), the drafting ratio is 1.0, 1.1, 1.2, 1.3, 1.4, 1.5 times respectively, and the residual amount of solvent in the fiber is tested.

[0031] Table 1. The relationship between the drafting ratio and the removal of residual solvent in the fiber

[0032]

Embodiment 2

[0034] High-performance polyethylene fiber dry-spun fiber products are used, the wind speed inside the drafting hot box is 0.5m / s, the initial seven-roller speed is 1m / s, the residual solvent in the fiber is 1% (mass percentage), and the drafting ratio is 1.2 times. The temperatures of the constant-temperature drying and drawing hot box were 140, 142, 144, 145, 146, and 148°C respectively, and the solvent residue in the fiber was tested.

[0035] Table 2. The relationship between the drying temperature of the drawing hot box and the removal of residual solvent in the fiber

[0036]

Embodiment 3

[0038] High-performance polyethylene fiber dry-spun fiber products are used, the wind speed inside the drawing hot box is 0.5m / s, the residual solvent in the fiber is 1% (mass percentage), the drafting ratio is 1.2 times, and the temperature of the constant temperature drying and drawing hot box is respectively The temperature is 145°C, and the initial seven roller speeds are 0.5, 1.0, 1.5, 2.0, 2.5, 3m / s respectively, and the solvent residue in the fiber is tested.

[0039] Table 3. The relationship between the initial drawing speed and the removal of residual solvent in the fiber

[0040]

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

No PUM Login to View More

Abstract

The invention provides a method for further removing residual low-concentration solvents in fibers, and performs secondary treatment on finished fibers, adopts a new type of constant temperature drying and drawing hot box, and adds one-stage drafting treatment to reduce the low-concentration solvents contained in finished fibers The solvent is further removed, so that the residual solvent in the fiber reaches the national medical device application standard.

Description

technical field [0001] The invention belongs to the field of polymer materials. In particular, it relates to a method for removing residual solvents of high-performance polyethylene dry-spun fiber products. Background technique [0002] Ultra-high molecular weight polyethylene fiber dry spinning technology uses decahydronaphthalene, paraffin oil, and white oil as the solvent system to produce polyethylene fiber. The high-strength and high-modulus polyethylene fiber produced is mainly used in national defense and military industries. [0003] In recent years, the application field has been gradually broadened, extending to equipment lining, equipment, fabrics, etc. However, in medical equipment, surgical sutures, fixed brackets, sports and fitness equipment, etc., due to the low concentration of solvent residues contained in the fibers, it cannot meet the specified application standards (≤20ppm), which limits its application fields. [0004] Due to the poor temperature resi...

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): D01D10/06D02J1/22
CPCD01D10/06D02J1/225
Inventor 孔凡敏苏豪吴小莲于品华赵运生
Owner SINOPEC NANJING RES INST OF CHEM IND CO LTD