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Sandwich type wave-absorbing fiber and preparation method thereof

A wave fiber and skin-core fiber technology, applied in the field of functional fiber preparation, can solve the problem of wave-absorbing fiber shielding effectiveness and wave-absorbing performance. There are few researches on wave-absorbing fiber, and it is difficult to balance wide, light, thin, strong, and a single wave-absorbing type. Or reflective fabrics and other issues, to achieve the effect of good absorbing effect, simple method and simple preparation method

Active Publication Date: 2021-01-29
苏州鑫极纺织有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the design process, its application value and cost need to be considered, and it is often difficult to balance width, lightness, thinness, and strength.
[0004] At present, there are many types of shielding fabrics on the market, basically all of them are single absorbing or reflective fabrics, but there are few fabrics that are blended with reflective fibers and absorbing fibers
At present, most of the research on electromagnetic shielding clothing fabrics is limited to the shielding effectiveness and absorbing performance of single-layer fabrics, while there are few studies on the shielding effectiveness and absorbing performance of absorbing fibers.

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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A sandwich-type wave-absorbing fiber, which is composed of a finishing layer and sheath-core fibers, the finishing layer is a coating containing nano-silica, and the sheath-core fiber includes a skin layer and a core layer, and the skin layer contains The polyester layer of the wave absorbing agent, the core layer is a polypropylene layer containing carbon fiber powder.

[0029] The absorbing agent in the skin layer is nano-carbon black, the content of which is 3 wt % of the polyester content, and the content of carbon fiber powder in the core layer is 8 wt % of the polypropylene content.

[0030] Described nano-carbon black is modified nano-carbon black, and its modification method may further comprise the steps:

[0031] S1. Add the nano-carbon black powder to the n-butanol solution containing the silane coupling agent KH550, perform ultrasonic treatment for 30 minutes, and then reflux reaction at a temperature of 80°C under strong stirring for 4 hours to obtain KH550...

Embodiment 2

[0040] A sandwich-type wave-absorbing fiber, which is composed of a finishing layer and a sheath-core fiber, the finishing layer contains a nano-quartz coating, the sheath-core fiber includes a skin layer and a core layer, and the skin layer contains a wave-absorbing agent The polyester layer, the core layer is a polypropylene layer containing carbon fiber powder.

[0041] The absorbing agent in the skin layer is nano-carbon black, the content of which is 5 wt % of the polyester content, and the content of carbon fiber powder in the core layer is 4 wt % of the polypropylene content.

[0042] Described nano-carbon black is modified nano-carbon black, and its modification method may further comprise the steps:

[0043] S1. Add nano-carbon black powder to n-butanol solution containing silane coupling agent KH550, perform ultrasonic treatment for 50 minutes, and then reflux reaction at 95°C for 8 hours under strong stirring to obtain KH550 nano-carbon black powder;

[0044] S2. M...

Embodiment 3

[0052] A sandwich-type wave-absorbing fiber, which is composed of a finishing layer and sheath-core fibers, the finishing layer is a coating containing nano-silica, and the sheath-core fiber includes a skin layer and a core layer, and the skin layer contains The polyester layer of the wave absorbing agent, the core layer is a polypropylene layer containing carbon fiber powder.

[0053] The wave absorbing agent in the skin layer is nano carbon black, and its content is 4wt% of polyester content.

[0054] The content of carbon fiber powder in the core layer is 6wt% of the polypropylene content.

[0055] Described nano-carbon black is modified nano-carbon black, and its modification method may further comprise the steps:

[0056] S1. Add nano-carbon black powder to n-butanol solution containing silane coupling agent KH550, perform ultrasonic treatment for 35 minutes, and then reflux reaction at 80°C under strong stirring for 6 hours to obtain KH550 nano-carbon black powder;

[...

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PUM

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Abstract

The invention provides a sandwich type wave-absorbing fiber. The sandwich type wave-absorbing fiber is formed by compounding a finishing layer and a sheath-core fiber, the finishing layer is a coatingcontaining nano quartz or silicon dioxide, the sheath-core fiber comprises a sheath layer and a core layer, the sheath layer is a polyester layer containing a wave-absorbing agent, and the core layeris a polypropylene layer containing carbon fiber powder. The wave-absorbing multi-layer fiber is designed and researched, and a scheme is provided for researching a fabric combination with better electromagnetic shielding efficiency and better compatibility level.

Description

technical field [0001] The invention relates to the field of preparation of functional fibers, in particular to a preparation method of a sandwich-type wave-absorbing fiber. Background technique [0002] In today's era of rapid development of communication technology, a variety of electronic and electrical products that facilitate human life have emerged as the times require. At the same time, the electromagnetic radiation produced by them also poses a huge hazard to human health. In order to protect the human body from the harm of electromagnetic radiation, electromagnetic shielding clothing has become a contemporary research hotspot. [0003] With the rapid development of electromagnetic wave shielding and wave-absorbing material technology, people put forward higher requirements for wave-absorbing materials, that is, wide, light, thin, and strong. Improving the absorption rate of electromagnetic waves is the goal of absorbing materials. The design of absorbers mainly inc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/79D01F8/14D01F8/06D01F1/10D06M101/20D06M101/32
CPCD06M11/79D01F8/14D01F8/06D01F1/106D06M2101/32D06M2101/20
Inventor 徐新杰
Owner 苏州鑫极纺织有限公司
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