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Graphene composite ultra-high molecular weight polyethylene fiber and preparation method thereof

Inactive Publication Date: 2019-07-11
JIANGSU HANVO SAFETY PROD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent text describes a method for making a glass fiber premix by cutting longer glass fibers with a knife, which makes the aspect ratio of the glass fiber more uniform and avoids subsequent plugging during spinning. The swollen UHMWPE molecular chain has entanglement points that affect its solubility. The patent presents a method for eliminating these points by temperature extrusion, which improves the solvation effect of the solvent on UHMWPE.

Problems solved by technology

However, due to the addition of a hard material such as an inorganic metal or a glass fiber, the body feels hard and the wearing is not comfortable.
However, if the graphene powder is directly added during the spinning mixture, the graphene is agglomerated in a large amount, and a spinning mixture with poor dispersibility is obtained.
The experiment verified that if the graphene powder was directly added during the spinning mixture, the graphene was unevenly dispersed, which would affect the cutting performance of the final product, wherein the graphene particles have a wide particle size distribution, and the size is large and the agglomeration is serious, and thus it is difficult to form an effective interface with white oil.
The uniformity and stability of graphene dispersion are poor, resulting in a short shelf life of the spinning mixture.

Method used

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  • Graphene composite ultra-high molecular weight polyethylene fiber and preparation method thereof
  • Graphene composite ultra-high molecular weight polyethylene fiber and preparation method thereof
  • Graphene composite ultra-high molecular weight polyethylene fiber and preparation method thereof

Examples

Experimental program
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example 1

[0157]As shown in FIG. 13, a method for preparing a composite ultra-high molecular weight polyethylene fiber is provided.

[0158]1) Pretreatment of Glass Fiber

[0159]0.03 kg of silane coupling agent KH-550 was dissolved in anhydrous ethanol, then 3 kg of glass fiber (having a diameter of 5-7 μm, a length of 50-400 μm, an average length of 70 μm) was added to mix homogeneously, in which KH-550 accounted for 1 wt % of the glass fiber. After 30 min of immersion, the glass fiber was dried at 120° C. for 2 h, and ground and filtered by 100 mesh for subsequent use.

[0160]2) Preparation of Glass Fiber Premix

[0161]The treated glass fiber was poured into 9 kg of white oil (the concentration of glass fiber is 25%) to mix, and then stirred at a high speed for 15 min with an emulsifier at a speed of 3500 rpm.

[0162]3) Pretreatment of Graphene Slurry

[0163]0.05 kg of graphene was added to 0.95 kg of anhydrous ethanol and mixed and stirred, and then the mixture was ground in a sand mill until the graph...

example 2

[0170]As shown in FIG. 13, a method for preparing a composite ultra-high molecular weight polyethylene fiber is provided.

[0171]1) Pretreatment of Glass Fiber

[0172]6 g of silane coupling agent KH-560 was dissolved in anhydrous ethanol, then 6 kg of glass fiber (having a diameter of 3-7 μm, a length of 10-400 μm, an average length of 60 μm) was added to mix homogeneously, in which KH-560 accounted for 0.1 wt % of the glass fiber. After 10 min of immersion, the glass fiber was dried at 180° C. for 1 h, and ground and filtered by 100 mesh for subsequent use.

[0173]2) Preparation of Glass Fiber Premix

[0174]The treated glass fiber was poured into 114 kg of white oil (the concentration of glass fiber is 5%) to mix, and then stirred at a high speed for 30 min with an emulsifier at a speed of 5000 rpm.

[0175]3) Pretreatment of Graphene Slurry

[0176]0.01 kg of graphene was added to 0.99 kg of anhydrous ethanol and mixed and stirred, and then the mixture was ground in a sand mill until the graphe...

example 3

[0183]As shown in FIG. 13, a method for preparing a composite ultra-high molecular weight polyethylene fiber is provided.

[0184]1) Pretreatment of Glass Fiber

[0185]0.02 kg of silane coupling agent KH-570 was dissolved in anhydrous ethanol, then 0.2 kg of glass fiber (having a diameter of 3-10 μm, a length of 10-600 μm, an average length of 30 μm) was added to mix homogeneously, in which KH-570 accounted for 10 wt % of the glass fiber. After 2 h of immersion, the glass fiber was dried at 50° C. for 6 h, and ground and filtered by 100 mesh for subsequent use.

[0186]2) Preparation of Glass Fiber Premix

[0187]The treated glass fiber was poured into 1.8 kg of white oil (the concentration of glass fiber is 10%) to mix, and then stirred at a high speed for 1 h with an emulsifier at a speed of 3000 rpm.

[0188]3) Pretreatment of Graphene Slurry

[0189]0.08 kg of graphene was added to 0.92 kg of anhydrous ethanol and mixed and stirred, and then the mixture was ground in a sand mill until the graphe...

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Abstract

The present invention provides a composite ultra-high molecular weight polyethylene fiber and a preparation method thereof, wherein the method comprises mixing glass fiber, graphene slurry, UHMWPE powder and white oil, and then swelling to a molten state, then cooling into a gel-spun, and finally making the fiber from the gel-spun. The method of the present disclosure not only can solve the problem that the glass fiber has poor dispersibility in the case of high viscoelasticity of the ultra-high molecular weight polyethylene, but also can improve the cut resistance of the ultra-high molecular weight polyethylene fiber on the basis of ensuring the flexibility of the yarn.

Description

TECHNICAL FIELD[0001]The present invention relates to a composite ultra-high molecular weight polyethylene fiber and a preparation method thereof, and belongs to the technical field of high performance fibers.BACKGROUND[0002]Ultra-high molecular weight polyethylene (UHMWPE) fiber is also known as ultra-high strength polyethylene (UHMWPE) fiber, ultra-high modulus polyethylene (UHMWPE) fiber. Due to its unrivaled ultra-high tensile strength, UHMWPE can be used to produce fibers with ultra-high modulus of elasticity and strength by gel spinning, and the resulting fibers have a tensile strength of up to 3-3.5 Gpa, and a tensile elastic modulus of up to 100-125 GPa; and the fiber strength of which is the highest of all fibers that have been commercialized to date, 4 times larger than carbon fiber, 10 times larger than steel wire, and 50% larger than aramid fiber. It is widely used in military equipment, aerospace, marine operations, sports equipment and other fields.[0003]The patents fo...

Claims

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Application Information

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IPC IPC(8): D01F8/06D01F9/08D01F1/10D01D5/088
CPCD01F8/06D01F9/08D01F1/10D01D5/088D10B2401/063D01F6/46D01D1/02D01F6/04
Inventor OU, CHONGHUAREN, SHENDONGZHANG, MINGWANG, XIANHUA
Owner JIANGSU HANVO SAFETY PROD CO LTD
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