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A coating-treatment surface modification method for ultrahigh molecular weight polyethylene fibers

A polyethylene fiber, ultra-high molecular weight technology, applied in the field of materials, can solve the problems of difficult control of the treatment process, pollution, uneven modification effect, etc.

Inactive Publication Date: 2016-05-04
THE RES INST FOR SPECIAL STRUCTURES OF AERONAUTICAL COMPOSITE AVIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It overcomes the disadvantages of difficult control of the treatment process, pollution problems caused by the use of solvents, uneven modification effects, and serious damage to the fiber body when the liquid phase oxidation method is used to treat fibers; it also avoids the timeliness of the plasma treatment effect The problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The UHMPE fiber is treated with plasma in oxygen, the treatment power is 200W, the treatment time is 3min, the vacuum degree of the cavity is 50Pa, after treatment, it is immersed in 5% epoxy resin / acetone solution for 30s, and the solvent is dried. The UHMPE before and after treatment and E-51 / Dicy resin were prepared into a composite material, and its ILSS was increased from 62.47MPa before treatment to 113.27MPa.

Embodiment 2

[0024] The UHMPE fiber is treated with plasma in argon gas, the treatment power is 250W, the treatment time is 2min, the vacuum degree of the cavity is 50Pa, after treatment, it is immersed in 20% epoxy resin / DMF solution for 30s, and the solvent is dried . The UHMPE before and after treatment and E-51 / Dicy resin were prepared into a composite material, and its ILSS was increased from 62.47MPa before treatment to 105.43MPa.

Embodiment 3

[0026] The fabric mixed with UHMPE fiber and S-glass fiber is treated with plasma in oxygen, wherein the treatment power is 200W, the treatment time is 3min, the vacuum degree of the cavity is 50Pa, and after treatment, it is treated in 15% epoxy resin / butylene. Immerse in the ketone solution for 120s, and dry the solvent. The UHMPE before and after treatment and E-51 / Dicy resin were prepared into a composite material, and its ILSS was increased from 43.89MPa before treatment to 93.41MPa.

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PUM

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Abstract

The invention belongs to the field of materials and particularly relates to a coating-treatment surface modification method for ultrahigh molecular weight polyethylene fibers and fabric of the fibers. To improve adhesion properties of an interface between a resin substrate and the ultrahigh molecular weight polyethylene fibers as well as the fabric thereof and to eliminate or weaken timeliness of material surface plasma treatment, the surface of the ultrahigh molecular weight polyethylene is treated with low-temperature plasma and the fibers or the fabric are then immediately dipped into a coating solution containing epoxy resin, cyanate esters, bismaleimide resin, and the like so as to artificially introduce a designable "composite material interface layer" before compositing the ultrahigh molecular weight polyethylene fibers and the resin substrate, thus enhancing interface adhesive strength with the resin substrate and improving comprehensive properties.

Description

technical field [0001] The application belongs to the field of materials, and in particular relates to a preparation method of a composite material containing ultra-high molecular weight polyethylene fibers. technical background [0002] Ultra-high molecular weight polyethylene (UHMPE) fiber is a new type of high-performance organic fiber with ultra-high strength and ultra-high modulus, and its density is the smallest among the high-performance fibers developed so far. In addition, UHMPE has very excellent electrical insulation properties, and its dielectric constant and dielectric loss are very small (dielectric constant ε=2.3, dielectric loss tangent tanδ=4×10-4). However, for UHMPE, due to its smooth surface and lack of polar groups, it presents an extremely inert chemical structure with low surface energy; at the same time, the highly symmetrical methylene (-CH2-) structure leads to UHMPE's high The degree of crystallinity and orientation makes the force between the fib...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M10/02D06M15/55D06M15/59D06M15/37D06M101/20
CPCD06M10/025D06M15/37D06M15/55D06M15/59D06M2101/20
Inventor 张相一王志强门薇薇
Owner THE RES INST FOR SPECIAL STRUCTURES OF AERONAUTICAL COMPOSITE AVIC
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