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Preparation method and application of ultrahigh molecular weight polyethylene/graphene composite fiber

An ultra-high molecular weight and graphene composite technology, which is applied in the field of ultra-high molecular weight polyethylene/graphene composite fiber preparation, can solve problems such as low production efficiency, difficulty in high temperature densification, and difficulty in preparing arc-shaped products.

Active Publication Date: 2012-08-01
THE QUARTERMASTER EQUIPMENT RESEARCH INSTITUTE OF THE GENERAL LOGISITIC DEPARTME +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, B 4 The preparation of C ceramics is difficult, and it is difficult to densify at high temperature. It mainly relies on hot-press sintering (> 2000 ° C), the production efficiency is low, and the finished product is expensive, especially the preparation of large-sized and arc-shaped products is more difficult.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 1) 0.5g diameter is 0.6 μ m, the graphene that thickness is 0.5nm is immersed in the mixed solution of 100ml sulfuric acid and potassium permanganate, purify treatment 1.5 hours under reflux temperature, the concentration of potassium permanganate in sulfuric acid is 5g / 100ml; then reflux 0.5g of graphene and 3-aminopropyltriethoxysilane coupling agent in 100ml ethanol for 2 hours after the aforementioned purification treatment, to obtain graphene modified by the coupling agent. The concentration of 3-aminopropyltriethoxysilane coupling agent in ethanol is 0.03g / ml.

[0024] 2) The graphene modified by the coupling agent obtained in step 1) is uniformly dispersed in the ultra-high molecular weight polyethylene containing ultra-high molecular weight ultra-high molecular weight polyethylene (weight average molecular weight is 2 × 10 6 ) in the paraffin oil (step 1) obtained coupling agent modified graphene and the mass ratio of ultra-high molecular weight polyethylene is...

Embodiment 2

[0028] 1) 0.5g diameter is 0.8 μ m, and the graphene that thickness is 1nm is immersed in the mixed solution of 100ml sulfuric acid and potassium permanganate, purifies and handles 2 hours under reflux temperature, and the concentration of potassium permanganate in sulfuric acid is 5g / 100ml; then reflux 0.5g of graphene and 3-aminopropyltriethoxysilane coupling agent in 100ml ethanol for 2 hours after the aforementioned purification treatment, to obtain graphene modified by the coupling agent. The concentration of 3-aminopropyltriethoxysilane coupling agent in ethanol is 0.03g / ml.

[0029] 2) The graphene modified by the coupling agent obtained in step 1) is uniformly dispersed in a layer containing ultra-high molecular weight ultra-high molecular weight polyethylene (weight-average molecular weight is 2.5 × 10 6 ) in the paraffin oil (step 1) obtained coupling agent modified graphene and ultra-high molecular weight polyethylene mass ratio is 0.5: 99.5), then slowly heated gr...

Embodiment 3

[0033] 1) Immerse 0.3g of graphene with a diameter of 1 μm and a thickness of 2nm in a mixed solution of 100ml sulfuric acid and potassium permanganate, and purify it for 2.5 hours at reflux temperature. The concentration of potassium permanganate in sulfuric acid is 5g / 100ml ; Then reflux 0.3g of graphene and 3-aminopropyltriethoxysilane coupling agent in 100ml ethanol for 2 hours through the aforementioned purification treatment to obtain graphene modified by the coupling agent. The concentration of 3-aminopropyltriethoxysilane coupling agent in ethanol is 0.03g / ml.

[0034] 2) The graphene modified by the coupling agent obtained in step 1) is uniformly dispersed in a layer containing ultra-high molecular weight ultra-high molecular weight polyethylene (weight average molecular weight is 3.0 × 10 6 ) in the paraffin oil (step 1) obtained coupling agent modified graphene and the mass ratio of ultra-high molecular weight polyethylene is 0.8:99.2), then slowly heat the graphene...

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Abstract

The invention discloses an ultrahigh molecular weight polyethylene / graphene composite fiber and a preparation method as well as application thereof. The composite fiber consists of ultrahigh molecular weight polyethylene (UHMWPE) and graphene; the weight-average molecular weight of the ultrahigh molecular weight polyethylene is 1*10<6>-4*10<6>, particularly 1*10<6>-3*10<6>; the diameter of the graphene is 0.6-1.8 mum; and the thickness of the graphene is 0.5-5 nm. The graphene is a material which has the maximum strength in the world up to now. According to the invention, the graphene powder is introduced into the ultrahigh molecular weight polyethylene fiber, so that the ultrahigh molecular weight polyethylene / graphene composite fiber has excellent mechanical property. Preliminary research shows that the tensile strength of the ultrahigh molecular weight polyethylene / graphene composite fiber prepared by the method can reach 2.5 GPa, the tensile modulus is 130 GPa, and the thermal decomposition temperature in nitrogen gas can reach up to over 390 DEG C.

Description

technical field [0001] The invention relates to a preparation method of ultra-high molecular weight polyethylene / graphene composite fiber and its application. Background technique [0002] In terms of the antagonism of war, bulletproof equipment is an inevitable product that accompanies bullet weapons. At present, conventional weapons are developing rapidly, and the threat level to individual soldiers is gradually increasing. In order to improve the bulletproof survivability and battlefield mobility of individual soldiers, it is necessary to develop a lightweight and efficient bulletproof composite material system. [0003] In the individual protection of individual soldiers, the armor materials used for bulletproof include aluminum oxide (Al 2 o 3 ), silicon carbide (SiC), boron carbide (B 4 C), silicon nitride (Si 3 N 4 ), titanium diboride (TiB 2 )Wait. Among them, alumina, silicon carbide and boron carbide are the most commonly used. These ceramic materials are ch...

Claims

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Application Information

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IPC IPC(8): D01F6/46D01F1/10D01D5/40F41H1/00F41H1/02F41H1/04
Inventor 马天张建春张涛张华高鹏刚何锦风陆国军马永明黄忆婷
Owner THE QUARTERMASTER EQUIPMENT RESEARCH INSTITUTE OF THE GENERAL LOGISITIC DEPARTME
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