Multifunctional shielding composite material with air permeability and preparation method thereof

A technology of composite materials and shielding materials, applied in the field of multifunctional shielding composite materials and their preparation

Active Publication Date: 2020-12-11
SWOTO PROTECTION & TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the above-mentioned problems existing in the prior art, the present invention adds lead-free shielding materials and electromagnetic wave shielding materials from the in-situ preparation of materials, breaking through the limitation that excessive powder cannot be added in the fiber spinning process, the composite foaming material of the present invention Or the content of shielding material in the composite non-woven material is relatively high, which can effectively shield medium and high X / γ rays and 2-18GHz electromagnetic waves; the composite material has good air permeability, which will combine comfortable air permeability, X / γ The three anti-properties of waterproof, oil-proof and anti-fouling are combined to meet the needs of complex radiation environments, and its preparation process is simple and the protective effect is good.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] (1) Put the PE resin into the extruder, melt it in the extruder at 230°C, and reach the melt-blown die head through the metering pump (the capillary diameter of the spinneret is 0.2-0.4mm), at 250-300°C Under compressed air, the PE melt passing through the spinneret is drawn to 1-10 μm with an airflow of 550m / s, laid on a conveyor belt to form a web, and molded into a sheet by bidirectional hot rollers with a thickness of 0.1mm. In the conveying process, carry out hydrophilic finishing agent (LD-B1, concentration 20%, spraying amount 10g / m 2 ) spraying, drying at 90°C for 3 minutes, and baking at 120°C for 1 minute in a hot oven tunnel; the other side of the sheet material is sprayed with a water-repellent finishing agent (Huntsman CP-SLA, 40g / L, spraying amount 50g / m 2 ) spraying, drying at 105°C for 3 minutes and baking at 120°C for 3 minutes in a hot oven tunnel to obtain a unidirectional moisture-wicking PE nonwoven layer as the innermost layer.

[0052] (2) 70 par...

Embodiment 2

[0058] (1) Put the PE resin into the extruder, melt it in the extruder at 230°C, and reach the melt-blown die head through the metering pump (the capillary diameter of the spinneret is 0.2-0.4mm), at 250-300°C Under compressed air, the PE melt passing through the spinneret is drawn to 1-10 μm with an airflow of 550m / s, laid on a conveyor belt to form a web, and molded into a sheet by bidirectional hot rollers with a thickness of 0.1mm. In the conveying process, carry out hydrophilic finishing agent (LD-B1, concentration 20%, spraying amount 15g / m 2 ) spraying, drying at 90°C for 3 minutes, and baking at 120°C for 1 minute in a hot oven tunnel; the other side of the sheet material is sprayed with a water-repellent finishing agent (Huntsman CP-SLA, 40g / L, spraying amount 50g / m 2 ) spraying, drying at 105°C for 3 minutes and baking at 120°C for 3 minutes in a hot oven tunnel to obtain a unidirectional moisture-wicking PE nonwoven layer as the innermost layer.

[0059] (2) 80 par...

Embodiment 3

[0065] (1) Put the PE resin into the extruder, melt it in the extruder at 230°C, and reach the melt-blown die head through the metering pump (the capillary diameter of the spinneret is 0.2-0.4mm), at 250-300°C Under compressed air, the PE melt passing through the spinneret is drawn to 1-10 μm with an airflow of 550m / s, laid on a conveyor belt to form a web, and molded into a sheet by bidirectional hot rollers with a thickness of 0.1mm. In the conveying process, carry out hydrophilic finishing agent (LD-B1, concentration 20%, spraying amount 20g / m 2 ) spraying, drying at 90°C for 3 minutes, and baking at 120°C for 1 minute in a hot oven tunnel; the other side of the sheet material is sprayed with a water-repellent finishing agent (Huntsman CP-SLA, 40g / L, spraying amount 50g / m 2 ) spraying, drying at 105°C for 3 minutes and baking at 120°C for 3 minutes in a hot oven tunnel to obtain a unidirectional moisture-wicking PE nonwoven layer as the innermost layer.

[0066] (2) 100 pa...

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Abstract

The invention discloses a multifunctional shielding composite material with air permeability and a preparation method thereof. Specifically, the invention provides the multifunctional shielding composite material which is high in protection performance, good in air permeability and comfortable to wear and the preparation method of the multifunctional shielding composite material. The multifunctional shielding composite material is formed by compounding at least four layers of materials with different functions from inside to outside: an innermost layer is a unidirectional moisture-conducting non-woven layer; a second layer is a lead-free X / gamma ray shielding material composite foaming layer or a lead-free X / gamma ray shielding material composite fiber non-woven layer; a third layer is anelectromagnetic shielding composite foaming layer or an electromagnetic shielding composite non-woven layer; and an outermost layer is a three-proofing breathable non-woven layer.

Description

technical field [0001] The invention relates to the field of multifunctional protective materials, in particular to a multifunctional shielding composite material with air permeability and a preparation method thereof. Background technique [0002] Radiation in real life is very common. For example, various electronic products such as mobile phones, computers, wireless transmitters, and microwave ovens will produce a certain amount of radiation, but the amount of radiation irradiated to the human body is relatively small, and the impact on the human body is negligible. Domestic tertiary hospitals basically have X-ray inspection, interventional radiology department, CT, etc., and a large number of staff are easily exposed to X-rays or γ-rays during work; Because the human body receives radiation from the air for 3 days to 7 months, but there is a cumulative effect of ray radiation, long-term or multiple radiation can easily reach the threshold of human organs and cause cancer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/12B32B27/06B32B27/20B32B27/22B32B27/32B32B27/36B32B27/40B32B27/02B32B7/12B32B33/00
CPCB32B5/022B32B5/18B32B27/12B32B27/065B32B27/20B32B27/22B32B7/12B32B33/00C08J9/103C08J9/0061C08J9/0066C08J9/0023B32B2266/0278B32B2266/0207B32B2262/0253B32B2262/0276B32B2266/025B32B2307/212B32B2307/724C08J2323/06C08J2203/10
Inventor 代国亮徐超王炳来蒋春燕陆锋文美莲施楣梧
Owner SWOTO PROTECTION & TECH CO LTD
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