Graphene composite modified high-strength polyethylene fiber and preparation method thereof

A high-strength polyethylene and graphene composite technology, which is applied in the direction of wet spinning, single-component polyolefin artificial filament, etc., can solve problems such as poor temperature resistance and heat transfer, inability to conduct heat energy, and product breakdown. Achieve the effects of increasing temperature resistance and heat transfer rate, making the preparation method simple and improving performance

Inactive Publication Date: 2015-07-08
YANAN BICON PHARMACEUTICAL LISTED COMPANY
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  • Summary
  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0003] However, due to the structure of polyethylene itself, it is poor in temperature resistance and heat transfer. The long-term use temperature is not higher than 80 degrees, and it can be used at 120 degrees in the short term. The thermal conductivity is only 20w/m.k
The non-woven fabric products made of high-strength polyethylene fibers cannot quickly conduct the heat energy converted from

Method used

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Example Embodiment

[0020] A graphene composite modified high-strength polyethylene fiber, which is characterized by: composed of UHMWPE and graphene; among them, UHMWPE accounts for 98%-99.8% by weight percentage, and graphene accounts for 0.2%-2%; the molecular weight of UHMWPE Between 2.4 million and 2.6 million; graphene has a particle size of 0.5-1.5um and a particle size of 0.33-0.35nm.

[0021] The preparation method of the graphene composite modified high-strength polyethylene fiber includes the following steps:

[0022] (1) Preparation of graphene pre-dispersion: put a certain amount of graphene, coupling agent, and non-ionic surfactant into the white oil medium, and use a powerful emulsifier to emulsify;

[0023] (2) Preparation of UHMWPE suspension: Put the UHMWPE raw materials and solvent white oil into the mixing kettle and stir to make a uniform suspension;

[0024] (3) Add the prepared graphene pre-dispersion to the UHMWPE suspension to prepare spinning dope, and stir evenly;

[0025] (4) ...

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PUM

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Abstract

The invention discloses graphene composite modified high-strength polyethylene fiber and a preparation method thereof. The graphene composite modified high-strength polyethylene fiber comprises UHMWPE (ultra-high molecular weight polyethylene) and graphene, wherein calculated by weight percentage, UHMWPE accounts for 98%-99.8%, and graphene accounts for 0.2%-2%; the molecular weight of UHMWPE is 2.4 million-2.6 million; and the particle size of graphene is 0.5-1.5um, and the particle size is 0.33-0.35nm. The preparation method disclosed by the invention is simple and convenient, and excellent performances are realized. Graphene is mixed into a white oil solution of UHMWPE by a method of adding a stock solution, uniform stirring is performed, and then the graphene modified high-strength polyethylene fiber is further prepared by spinning by a wet spinning method, so that the performances are effectively improved.

Description

technical field [0001] The invention relates to a polyethylene fiber and a preparation method thereof. Background technique [0002] Ultra-high molecular weight polyethylene fiber is one of the most mature high-performance fibers in the world today. It is widely used in many fields such as aviation, aerospace, military industry, marine engineering, glass processing, etc., especially the body armor made of it. , Bulletproof plates, bulletproof helmets, explosion-proof shields, etc. are increasingly used in personal protection and armor protection. [0003] However, due to the structure of polyethylene itself, it is poor in temperature resistance and heat transfer. The long-term use temperature is not higher than 80 degrees, and it can be used at 120 degrees in the short term. The thermal conductivity is only 20w / m.k. The non-woven fabric products made of high-strength polyethylene fibers cannot quickly conduct the heat energy converted from kinetic energy when they are subje...

Claims

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Application Information

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IPC IPC(8): D01F6/46D01F1/10D01D5/06
Inventor 周新基高继业朱建军
Owner YANAN BICON PHARMACEUTICAL LISTED COMPANY
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