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A kind of non-woven fabric containing metal coating and its products

A technology of metal coating and non-woven fabrics, which is applied in the field of preparation of structure-function integrated composite materials, can solve the problems of low conductivity and high price of silver nanowires, and achieve high conductivity and high resistance to impact damage Impedance and damage tolerance, the effect of technical ease of operation

Active Publication Date: 2016-03-16
AVIC COMPOSITES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In recent years, the structure-function integration technology of composite materials has been increasing. For example, the Chinese invention patent application CN201210251285.7 proposes a technology of using non-woven fabrics with silver-loaded nanowires as interlayer toughening and conductive layers, which greatly improves the The interlayer fracture toughness of the composite material greatly improves the electrical conductivity of the material in the vertical fiber direction and the thickness direction. However, the price of silver nanowires is expensive, and at the same time, due to the large number of electrical contact interfaces, its electrical conductivity is lower than that of the attached load. When the amount increases, it gradually approaches a relatively low conductance value

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • A kind of non-woven fabric containing metal coating and its products

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Experimental program
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Effect test

Embodiment 1

[0028] The implementation process of the technical solution of the present invention is as follows:

[0029] (1-1) The thickness is 53μm, the surface density is 14g / m 2 Nylon non-woven fabric with a thickness of 55μm and a surface density of 20g / m 2 Nylon non-woven fabric with a thickness of 25μm and a surface density of 8g / m 2 Polyether ether ketone non-woven fabric or thickness of 25μm, area density of 7g / m 2 Cleaning treatment of polyethersulfone nonwovens after immersion into SnCl 2 and hydrochloric acid mixed solution sensitization, SnCl in the solution used 2 The concentration of hydrochloric acid is 8g / L or 15g / L, the concentration of hydrochloric acid is 5mL concentrated HCl / 1L water or 10mL concentrated HCl / 1L water, and the sensitization time is 5 minutes, 10 minutes or 25 minutes; take it out and wash it, and then perform activation treatment. The activation treatment is to immerse the non-woven fabric in 0.3g / L or 1.5g / L or 7g / L PdCl 2 and 15g / L or 25g / L boric...

Embodiment 2

[0035] The implementation process of the technical solution of the present invention is as follows:

[0036] (2-1) The thickness is 55μm, the surface density is 20g / m 2 Polyethylene non-woven fabric with a thickness of 35 μm and an area density of 10 g / m 2 Polyetherimide non-woven fabric or thickness of 25μm, area density of 7g / m 2 The aramid nonwovens were cleaned by immersion into SnCl 2 and hydrochloric acid mixed solution sensitization, SnCl in the solution used 2 The concentration of hydrochloric acid is 10g / L or 25g / L, the concentration of hydrochloric acid is 4mL concentrated HCl / 1L water or 8mL concentrated HCl / 1L water, and the sensitization time is 7 minutes or 15 minutes. The treatment is to immerse the non-woven fabric in 0.5g / L or 2g / L PdCl 2 and 20g / L or 30g / L boric acid mixed aqueous solution, soak for 15 minutes or 35 minutes, then take it out, wash it with water, and then immerse it in 10g / L or 15g / L NaH 2 PO 2 Soak in aqueous solution for 60 minutes.

...

Embodiment 3

[0042] The implementation process of the technical solution of the present invention is as follows:

[0043] (3-1) Set the thickness to 30μm and surface density to 10g / m 2 Polyester non-woven fabric with a thickness of 35μm and a surface density of 10g / m 2 Polyimide non-woven fabric with a thickness of 25μm and a surface density of 7g / m 2 The aramid nonwovens were cleaned by immersion into SnCl 2 and hydrochloric acid mixed solution sensitization, SnCl in the solution used 2 The concentration of hydrochloric acid is 9g / L or 17g / L, the concentration of hydrochloric acid is 3mL concentrated HCl / 1L water or 7mL concentrated HCl / 1L water, and the sensitization time is 10 μg / 15 minutes. In order to immerse the non-woven fabric into 0.5g / L or 1.2g / L or 2g / L of PdCl 2 and 18g / L or 35g / L boric acid mixed aqueous solution, soak for 5 minutes or 30 minutes, then take it out, wash it with water, and then immerse it in 8g / L or 10g / L NaH 2 PO 2 Soak in aqueous solution for 45 minutes...

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Abstract

The invention relates to a nonwoven fabric containing a metal coating as well as a product thereof. The nonwoven fabric containing the metal coating is mainly characterized in that the structural characteristic of the nonwoven fabric is that the nonwoven fabric is a thin layer which has a network structure and is formed by low-surface-density fibers; a metal layer of copper, silver, nickel, nickel coated copper or nickel-copper-nickel is coated on the surface of the nonwoven fabric and has the thickness of 100nm-5 micron m, so that the nonwoven fabric layer has electrical conductivity and keeps soft, also can obviously intensify the interlayer fracture toughness and electrical conductivity of laminated plates when being applied to intercalation compounding material lamination plates, and meanwhile a compound material is endowed with higher shock damage impedance and damage tolerance as well as higher electrical conductivity. Corresponding prepregs can be directly used for laying and covering so as to obtain a high-electrical-conductivity compound material, and the corresponding compound material product can be used for high-electrical-conductivity shock-resistant occasions and aircraft lightning protection structural bodies.

Description

technical field [0001] The invention relates to a metal-plated non-woven fabric and its products, which belong to the technical field of preparation of structure-function integrated composite materials. Background technique [0002] Continuous carbon fiber reinforced resin-based composite laminates have the advantages of high specific strength and high specific stiffness, so they are used more and more in modern aircraft, such as Boeing 787 and A350. A large number of composite materials are used. However, there are two basic defects in this composite material. One is that the low-velocity impact damage resistance and damage tolerance of this material are low, and it is easy to produce delamination damage when it is hit by hail or strange rigid bodies, resulting in the compression strength of the composite material. and the impact crater is not easy to form at the impact point or the impact crater is too shallow to be visible, so this kind of composite material usually needs...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B15/14B32B27/02B32B27/12
Inventor 郭妙才益小苏
Owner AVIC COMPOSITES
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