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Graphene composite light multilayer film wave-absorbing material and preparation method thereof

A graphene composite and multi-layer film technology, which is applied in the field of wave-absorbing materials, can solve the problems of being unable to be widely used, heavy weight, and high density, so as to avoid the collapse of wave-absorbing performance, stabilize wave-absorbing performance, and wrinkle-resistant recovery good sex effect

Active Publication Date: 2019-11-29
江苏万华拓谷新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One of the keys to improving the wave-absorbing performance of materials is to improve the electromagnetic properties of wave-absorbing agent particles. Traditional ferrite and carbonyl iron-based wave-absorbing agents have been used in industrial production because of their good wave-absorbing effects, but they have high density and heavy weight. , narrow frequency band and other shortcomings, cannot be widely used

Method used

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  • Graphene composite light multilayer film wave-absorbing material and preparation method thereof

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Embodiment 1

[0021] A graphene composite lightweight multi-layer film absorbing material, including a microfiber cloth flame-retardant layer, a polyurethane wave-absorbing layer and a silica gel wave-absorbing layer from bottom to top, the microfiber cloth flame-retardant layer is 0.5mm, and the microfiber cloth is High-strength flame-retardant microfiber cloth, the model is WHCXJB201; the polyurethane wave-absorbing layer is 0.03mm, and the silica gel wave-absorbing layer is 0.03mm; the polyurethane wave-absorbing layer includes: graphene 3, carbon fiber 4, carbon black 2, Defoamer 0.1 and polyurethane 30, the polyurethane model is: TPU8170RV; the defoamer is a special defoamer for polyurethane, the model is: BYK-555A; the silica gel wave-absorbing layer includes: graphene 2, carbon fiber 5, Carbon black 3, defoamer 0.2, silica gel 40 and silica gel vulcanizing agent 0.6, the silica gel model is: 8750; the vulcanizing agent is a special vulcanizing agent for silica gel, the model is: TRIGO...

Embodiment 2

[0030] A graphene composite lightweight multi-layer film absorbing material, including a microfiber cloth flame-retardant layer, a polyurethane wave-absorbing layer and a silica gel wave-absorbing layer from bottom to top. Intensity flame-retardant microfiber cloth, the model is WHCXJB201; the polyurethane wave-absorbing layer is 0.06mm, and the silica gel wave-absorbing layer is 0.06mm; the polyurethane wave-absorbing layer includes: graphene 4, carbon fiber 5, carbon black 3, Foaming agent 0.3 and polyurethane 50, the polyurethane model is: TPU8170RV; the defoamer is a special defoamer for polyurethane, the model is: BYK-555A; the silica gel wave-absorbing layer includes: graphene 2, carbon fiber 4, carbon Black 1, defoamer 0.1, silica gel 40 and silica gel vulcanizing agent 0.4, the silica gel model is: 8750; the vulcanizing agent is a special vulcanizing agent for silica gel, the model is: TRIGONOX 101; superfiber cloth flame-retardant layer and polyurethane wave-absorbing ...

Embodiment 3

[0039] A graphene composite lightweight multi-layer film absorbing material, comprising a microfiber cloth flame-retardant layer, a polyurethane wave-absorbing layer and a silica gel wave-absorbing layer from bottom to top, the microfiber cloth flame-retardant layer is 2mm, and the microfiber cloth is high The strength flame-retardant microfiber cloth is WHCXJB201; the polyurethane wave-absorbing layer is 0.04mm, and the silica gel wave-absorbing layer is 0.03mm; the polyurethane wave-absorbing layer includes: graphene 3, carbon fiber 4, carbon black 2, Foaming agent 0.2 and polyurethane 35, the polyurethane model is: TPU8170RV; the defoamer is a special defoamer for polyurethane, the model is: BYK-555A; the silica gel wave-absorbing layer includes: graphene 2.5, carbon fiber 3.5, carbon Black 1.5, defoamer 0.3, silica gel 28 and silica gel vulcanizing agent 0.4, the silica gel model is: 8750; the vulcanizing agent is a special vulcanizing agent for silica gel, the model is: TR...

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Abstract

The invention relates to a graphene composite light multilayer film wave-absorbing material and a preparation method thereof. The graphene composite light multilayer film wave-absorbing material is formed by bonding a microfiber cloth flame-retardant layer and a polyurethane wave-absorbing layer and bonding the polyurethane wave-absorbing layer and a silica gel wave-absorbing layer through bondingglue layers from bottom to top. The preparation method comprises the following steps: separately preparing two film coiled materials, namely polyurethane and silica gel, die-cutting the film coiled materials into standard-size sheets, superposing the sheets according to the mutual perpendicular orientation of carbon fibers in the two sheets, putting the sheets into a die press to be compounded with microfiber cloth, brushing adhesive glue between the microfiber cloth and a polyurethane film and between the polyurethane film and a silica gel film, and die-pressing by a die press to obtain thefilm wave-absorbing material. The material is light in weight, wide in wave-absorbing frequency band and high in wave-absorbing performance in the X + Ku waveband.

Description

technical field [0001] The invention relates to the technical field of wave-absorbing materials, in particular to a graphene composite lightweight multi-layer film wave-absorbing material and a preparation method thereof. Background technique [0002] Absorbing material refers to a class of materials that can absorb or greatly reduce the energy of electromagnetic waves projected onto its surface, thereby reducing the interference of electromagnetic waves. One of the keys to improving the wave-absorbing performance of materials is to improve the electromagnetic properties of wave-absorbing agent particles. Traditional ferrite and carbonyl iron-based wave-absorbing agents have been used in industrial production because of their good wave-absorbing effects, but they have high density and heavy weight. , Narrow frequency band and other shortcomings, cannot be widely promoted and used. Contents of the invention [0003] The invention proposes a graphene composite lightweight m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/06B32B27/12B32B27/18B32B27/20B32B27/40B29B7/12B29B7/28B29B7/72B29C70/34B29C70/54B32B5/02B32B25/08B32B25/20H05K9/00
CPCB29B7/12B29B7/28B29B7/72B29C70/34B29C70/54B32B5/02B32B25/08B32B25/20B32B27/06B32B27/12B32B27/18B32B27/20B32B27/40B32B2262/106B32B2307/212B32B2307/3065H05K9/009
Inventor 夏钢锋
Owner 江苏万华拓谷新材料科技有限公司