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Preparation method of high-quality, high-strength and high-modulus polyethylene fiber

A polyethylene fiber, high-strength and high-modulus technology, applied in the field of polyethylene fiber, can solve the problems of limiting the application range of ultra-high molecular weight polyethylene, unable to overcome the problems of high viscosity and low softening temperature of ultra-high molecular weight polyethylene, and achieve mechanical properties. Improve the effect of high elastic modulus and good quality

Pending Publication Date: 2021-06-18
盐城优和博新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it cannot overcome the shortcomings of UHMWPE, such as high viscosity, low softening temperature, and difficulty in injection molding, which limits the application range of UHMWPE to a certain extent.

Method used

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  • Preparation method of high-quality, high-strength and high-modulus polyethylene fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A method for preparing high-quality high-strength and high-modulus polyethylene fibers, the high-quality high-strength and high-modulus polyethylene fibers are prepared from the following materials: polyethylene modified body, first catalyst, second catalyst, white oil, cleaning agent and decolorizing agent are mixed and prepared , wherein the polyethylene-b-polyethylene oxide copolymer has a polyethylene oxide content of about 5-12% by weight;

[0025] The modified polyethylene uses n-butyllithium as an initiator and triisobutylaluminum as an additive to synthesize polyethylene-b-polyethylene oxide copolymer through sequential anion polymerization of polyethylene monomer activation, and then Add white oil to the polyethylene modified body, then heat the mixture at 45°C, keep the temperature at 45°C constant, then add the first catalyst, stir thoroughly for 0.5h; then add cleaning agent, decolorizer and the second catalyst, and then heat the mixture to 120°C and fully s...

Embodiment 2

[0037] A method for preparing high-quality high-strength and high-modulus polyethylene fibers, the high-quality high-strength and high-modulus polyethylene fibers are prepared from the following materials: polyethylene modified body, first catalyst, second catalyst, white oil, cleaning agent and decolorizing agent are mixed and prepared , wherein the polyethylene-b-polyethylene oxide copolymer has a polyethylene oxide content of about 5-12% by weight;

[0038]The modified polyethylene uses n-butyllithium as an initiator and triisobutylaluminum as an additive to synthesize polyethylene-b-polyethylene oxide copolymer through sequential anion polymerization of polyethylene monomer activation, and then Add white oil to the polyethylene modified body, then heat the mixture at 45°C, keep the temperature at 45°C constant, then add the first catalyst, stir thoroughly for 0.5h; then add cleaning agent, decolorizer and the second catalyst, and then heat the mixture to 120°C and fully st...

Embodiment 3

[0050] A method for preparing high-quality high-strength and high-modulus polyethylene fibers, the high-quality high-strength and high-modulus polyethylene fibers are prepared from the following materials: polyethylene modified body, first catalyst, second catalyst, white oil, cleaning agent and decolorizing agent are mixed and prepared , wherein the polyethylene-b-polyethylene oxide copolymer has a polyethylene oxide content of about 5-12% by weight;

[0051] The modified polyethylene uses n-butyllithium as an initiator and triisobutylaluminum as an additive to synthesize polyethylene-b-polyethylene oxide copolymer through sequential anion polymerization of polyethylene monomer activation, and then Add white oil to the polyethylene modified body, then heat the mixture at 45°C, keep the temperature at 45°C constant, then add the first catalyst, stir thoroughly for 1h; then add cleaning agents to the mixture in turn , decolorizer and the second catalyst, and then heat the mixtu...

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Abstract

The invention discloses a preparation method of high-quality, high-strength and high-modulus polyethylene fiber. The high-quality, high-strength and high-modulus polyethylene fiber is prepared by mixing the following materials of a polyethylene modified body, a first catalyst, a second catalyst, white oil, a cleaning agent and a decolorizing agent, wherein a polyethylene-b-polyethylene oxide copolymer comprises about 5-12% by weight of polyethylene oxide. The polyethylene modified body adopts n-butyllithium as an initiator and triisobutylaluminum as an additive, the polyethylene-b-polyethylene oxide copolymer is synthesized through polyethylene monomer activation sequential anionic polymerization, then the white oil is added into the polyethylene modified body, and full stirring is performed for 0.5-1 h; the cleaning agent, the decolorizing agent and the second catalyst are sequentially added into a mixture, and the mixture is heated to 120 DEG C; and then the polyethylene fiber is generated through a method of screw extrusion, spinning processing, water-cooling extraction and heating drafting.

Description

technical field [0001] The invention belongs to the technical field of polyethylene fibers, in particular to a method for preparing high-quality, high-strength, and high-modulus polyethylene fibers. Background technique [0002] Polyethylene (UHMW-PE) is a thermoplastic engineering plastic with a linear structure and excellent comprehensive properties. It has excellent impact resistance, wear resistance, chemical corrosion resistance and self-lubricating properties. It has been widely used in In the harsh environment with the above characteristics, for example, it has a wide range of applications in the fields of textile, mining, chemical industry, machinery, construction, medical treatment, aviation and military industry. However, the disadvantages such as high viscosity, low softening temperature and difficulty in injection molding of ultra-high molecular weight polyethylene cannot be overcome, which limits the application range of ultra-high molecular weight polyethylene ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/48D01F1/10
CPCD01F6/48D01F1/10
Inventor 陈林金效东张亮王亚军
Owner 盐城优和博新材料有限公司