Ultrahigh molecular weight polyoxyethylene fiber and preparation method thereof

A technology of polyethylene oxide and ultra-high molecular weight, which is applied in the fields of fiber chemical characteristics, single-component synthetic polymer rayon, wet spinning, etc., can solve the problems of large difference in theoretical values ​​and limited application range, and achieve the improvement of mechanical properties , optimized dissolution process, and high degree of orientation

Active Publication Date: 2020-05-29
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with other spinning methods, the strength of PEO fibers prepared by this technical method has been improved, but it is still far from the theoretical value, and the application range is limited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0027] As an aspect of the technical solution of the present invention, what it relates to is a kind of preparation method of ultra-high molecular weight polyethylene oxide fiber, which comprises:

[0028] Provide a spinning solution comprising ultra-high molecular weight polyethylene oxide, an antioxidant, and a spinning solvent, wherein the spinning solvent includes water, dimethyl sulfoxide, methanol, tetrahydrofuran, toluene, benzene, N,N-dimethyl Any one or a combination of two or more of methyl formamide and 1,4-dioxane, the content of ultra-high molecular weight polyethylene oxide in the spinning solution is 2 to 10 wt%, and the spinning solution dissolves The molecular weight retention rate of the final ultra-high molecular weight polyethylene oxide is more than 70% compared with the raw material;

[0029] Using the wet spinning method, inject the spinning solution into the coagulation bath to coagulate and fix the jelly yarn to obtain the jelly yarn, and extract the j...

Embodiment 1

[0080] Step 1. At room temperature, 9g of ultra-high molecular weight polyethylene oxide powder with a viscosity-average molecular weight of 4 million, 441g of N,N-dimethylformamide and 0.18g of [β-(3,5-di-tert-butyl-4 -Hydroxyphenyl)propionic acid]pentaerythritol ester was passed through an inert gas in the Erlenmeyer flask for deoxygenation for 30min, then sealed, heated to 80°C with magnetic stirring for 300min, and transferred to a constant temperature oscillator for 12h at 30°C to obtain Spinning solution with a mass concentration of 2%.

[0081] Step 2. Transfer the spinning solution prepared in step 1 into a constant temperature kettle of a wet spinning machine, and set the temperature of the spinning kettle to 50°C. The spinning solution is extruded through a metering pump and a spinneret, and coagulated and fixed in an ethanol bath to obtain jelly filaments. Among them, the frequency of the metering pump is 5 Hz, the temperature of the ethanol bath is -15 ° C, the sp...

Embodiment 2

[0085] Step 1. At room temperature, 18g of ultra-high molecular weight polyethylene oxide powder with a viscosity-average molecular weight of 5 million, 432g of N,N-dimethylformamide and 0.18g of 3-(3,5-di-tert-butyl-4-hydroxy Phenyl)octadecyl propionate was passed through an inert gas in the Erlenmeyer flask to remove oxygen for 15 minutes, then sealed, heated to 80°C with magnetic stirring for 30 minutes, and transferred to a constant temperature oscillator for 48 hours at 45°C to obtain Spinning solution with a mass concentration of 4%.

[0086] Step 2. Transfer the spinning solution prepared in step 1 into a constant temperature kettle of a wet spinning machine, and set the temperature of the spinning kettle to 50°C. The spinning solution is extruded through a metering pump and a spinneret, and coagulated and fixed in an ethanol bath to obtain jelly filaments. Among them, the frequency of the metering pump is 5 Hz, the temperature of the ethanol bath is -15 ° C, the spinn...

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Abstract

The invention discloses an ultrahigh molecular weight polyoxyethylene fiber and a preparation method thereof. The preparation method comprises the following steps of providing a spinning solution containing ultrahigh molecular weight polyoxyethylene, an antioxidant and a spinning solvent, wherein the spinning solvent comprises water, dimethyl sulfoxide, methanol, tetrahydrofuran, toluene, benzene,N,N-dimethylformamide, 1,4-dioxane and the like, and the molecular weight of the dissolved ultrahigh molecular weight polyoxyethylene is more than 70% of the retention rate of a raw material; and injecting the spinning solution into a coagulating bath for coagulation and fixation to obtain gel filaments by adopting a wet spinning method, then carrying out extraction treatment and drying to obtainultrahigh molecular weight polyoxyethylene extracted and dried fibers, and then carrying out hot drawing to obtain the ultrahigh molecular weight polyoxyethylene fibers. The ultrahigh molecular weight polyoxyethylene fiber disclosed by the invention has better mechanical property, higher fiber molecular weight than the raw material retention rate, high molecular weight and high orientation degree, and the preparation method is stable and feasible and is convenient for large-scale production.

Description

technical field [0001] The invention relates to a polyethylene oxide fiber, in particular to an ultra-high molecular weight polyethylene oxide fiber and a preparation method thereof, belonging to the technical field of polymer materials. Background technique [0002] Polyethylene oxide (PEO), also known as polyethylene oxide, is a high molecular weight homopolymer formed by heterogeneously catalyzed ring-opening polymerization of ethylene oxide. The oxygen atoms on the PEO molecular chain have non-shared electron pairs, which have a strong affinity for electron-deficient substances; they have good water solubility, good biocompatibility and biodegradability, and have a very wide range of applications. For example, PEO can form complexes with many organic low-molecular compounds, organic polymers, and some inorganic electrolytes to be used as polymer electrolyte matrix materials; 2 It has a strong quadrangular dipole effect and can be used to prepare gas separation membranes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/94D01F1/10D01D5/06D01D5/12D01D10/02
CPCD01F6/94D01F1/10D01D5/06D01D5/12D01D10/02
Inventor 陈鹏苏金鹏
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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