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A kind of graphene composite light-weight multilayer thin film wave absorbing material and preparation method thereof

A graphene composite and wave-absorbing material technology, which is applied in the field of wave-absorbing materials, can solve the problems of being unable to be widely used, high density, narrow frequency band, etc., so as to avoid the collapse of wave-absorbing performance, good anti-wrinkle recovery, and wave-absorbing The effect of stable performance

Active Publication Date: 2021-05-14
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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  • A kind of graphene composite light-weight multilayer thin film wave absorbing material and preparation method thereof

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Effect test

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 lightweight multi-layer film wave-absorbing material and a preparation method thereof. From bottom to top, between the superfiber cloth flame-retardant layer and the polyurethane wave-absorbing layer, between the polyurethane wave-absorbing layer and the silica gel wave-absorbing layer Adhesive bonding. Separately prepare polyurethane and silicone film rolls and die-cut them to standard size sheets, superimpose according to the direction of the carbon fibers in the two sheets perpendicular to each other, and then put them into the molding machine and composite with microfiber cloth, superfiber cloth and polyurethane film, polyurethane Both the film and the silica gel film are coated with adhesive glue, and molded by a molding machine to obtain the film wave-absorbing material. The material is lightweight, has a wide absorbing frequency band, and has high absorbing performance in the X+Ku band.

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 Patents(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