A kind of fiber-reinforced functional adhesive tape and its preparation method and product

A fiber reinforced and functional technology, applied in the field of fiber reinforced functional tape and its preparation, can solve the problems of reducing the resource utilization rate and economic benefit of carbon fiber composite materials, large "bridge" area, increasing defect area, etc. Application prospect, large performance adjustment range, and the effect of excellent mechanical properties

Active Publication Date: 2020-06-23
SUN YAT SEN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A large thickness of prepreg means that when the number of plies changes, the scale of the "bridging" area is large, the defect area increases, and the load-bearing performance of the composite material decreases, which not only affects the mechanical properties of the composite material, but also reduces the resources of the carbon fiber composite material. Utilization and economic benefits keep the manufacturing cost of carbon fiber composites high
[0004] Existing functional composite materials cannot have good electrical conductivity, wave absorption performance, wave transmission performance, stealth performance, electromagnetic shielding performance, thermal conductivity, and lightning damage protection performance, and the mechanical properties of functional materials are generally insufficient. The process performance is seriously lacking, and the products prepared from functional composite materials also have serious defects due to the insufficient performance of composite materials, which cannot meet the needs of multi-functional applications of modern technological development summary devices

Method used

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  • A kind of fiber-reinforced functional adhesive tape and its preparation method and product
  • A kind of fiber-reinforced functional adhesive tape and its preparation method and product
  • A kind of fiber-reinforced functional adhesive tape and its preparation method and product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Embodiment 1 preparation method and preparation device

[0055] Embodiment 1 is combined with attached figure 2 and 3 , the preparation process of the fiber-reinforced functional adhesive tape disclosed in the present invention will be further described in detail.

[0056] The device in this embodiment is installed along the horizontal direction, and the cuboid box 16 is installed horizontally, and its upper part is open. The solution containing prepreg is set in the box 16. The liquid level 160 is shown by the dotted line in the figure, and the first guide wheel 1 is set. Above the box body 16 side, the first traction wheel 2 and the first auxiliary wheel 3 are sequentially arranged in the box body 16, and the two cooperate with each other to provide the first power for the fiber bundle FB to advance, and the fiber bundle FB is under the action of the first power into solution;

[0057] The first tension sensor 41 and the loose yarn component 5 are set, and then th...

Embodiment 2

[0063] Embodiment 2 Ultra-thin carbon fiber prepreg tape unidirectional laminate

[0064]Use the device disclosed in Example 1 of the present invention to prepare an ultra-thin carbon fiber prepreg tape, prepare a unidirectional laminate with carbon fiber ultrathin than the impregnated tape and PA6 resin, wherein the mass fraction of carbon fiber is 60%, and the mass fraction of PA6 resin is 40%. The thickness of the carbon fiber prepreg tape is 0.02mm, and the thickness of the unidirectional laminate is 1mm. The performance test results show that the tensile strength of the laminate is 2200MPa, the tensile modulus is 150GPa, the compressive strength is 1600MPa, the compressive modulus is 165GPa, the open-hole tensile strength is 520MPa, the open-hole compressive strength is 430MPa, and the compressive strength after impact is 420MPa. Compared with a unidirectional laminate with a thickness of 1mm prepared by conventional 0.2mm thick carbon fiber prepreg tape and PA6 resin, th...

Embodiment 3 2

[0065] Embodiment 3 two-dimensional woven cloth

[0066] A 0.02 mm thick ultra-thin carbon fiber prepreg tape was woven in a two-dimensional orthogonal manner to prepare a two-dimensional woven fabric, which was then laminated into a quasi-isotropic laminate with a thickness of 1 mm.

[0067] After testing, the fiber axial tensile strength of the quasi-isotropic laminate is 1020MPa, the compressive strength is 870MPa, and the tensile modulus is 130GPa; the tensile strength perpendicular to the fiber axial direction is 980MPa, the compressive strength is 860MPa, and the tensile modulus The volume is 130GPa. Compared with a laminate of the same thickness prepared by 0.2mm carbon fiber pre-taped woven cloth, the mechanical properties are all improved by more than 30%.

[0068] The quasi-isotropic laminate obtained by using the two-dimensional woven fabric of Example 3 has quasi-isotropy.

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Abstract

The invention discloses a fiber reinforced functional adhesive tape, a preparation method and a product thereof. The fiber reinforced functional adhesive tape is formed by compounding of an ultrathinfiber bundle and a resin matrix, the thickness of ultrathin fiber bundle is 0.08mm-0.2mm, the width is 10-900mm, the content of the ultrathin fiber bundle is 30-90%, and the content of the resin matrix is 10-70%. The fiber reinforced functional adhesive tape prepared by the method provided by the invention is ultra-thin and ultra-light, keeps the excellent mechanical properties of fiber, can be prepared into products with excellent properties, and also different functional adhesive tapes can be combined to obtain functional materials with multiple functions. The fiber reinforced functional adhesive tape provided by the invention meets the requirements of integrated structural and functional design, has the characteristics of flexible design, wide performance adjustment range, convenient recovery of the thermoplastic matrix, energy saving and environmental protection, and has good industrial application prospects.

Description

technical field [0001] The invention belongs to the field of composite materials, and in particular relates to a fiber-reinforced functional adhesive tape, a preparation method and a product thereof. Background technique [0002] At present, most polymer-based functional composite materials use nano-powders and fiber functional fillers, such as conductive carbon black, graphene, carbon nanotubes, carbon nanofibers, boron nitride, silicon carbide, metal nickel powder, iron powder, Silicon oxide, silicon nitride, etc. The polymer-based functional composite materials prepared by these functional fillers can adjust their functional technical indicators such as electrical conductivity, thermal conductivity, and wave-absorbing performance by adjusting the filling amount, which is a relatively common material system in the market at present. At present, the thickness of commercial carbon fiber (CF) unidirectional tape prepregs is more than 0.15mm; the thickness of plain weave prep...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/25C08J5/04C08J5/06C08L77/02C08K9/02C08K7/06B29C70/34
CPCB29C70/34C08J5/042C08J5/06C08J2377/02C08K7/06C08K9/02C09J7/25C09J2301/41C09J2477/006
Inventor 郭子月吴海宏仝立勇
Owner SUN YAT SEN UNIV
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