Unlock instant, AI-driven research and patent intelligence for your innovation.

Structural high-damping fiber-reinforced composite

A damping composite material and composite material technology, applied in the field of structural high-damping fiber-reinforced composite materials, can solve the problems of reduced mechanical properties, high cost, unfavorable material promotion and application, etc., and achieve the effect of high cost performance and widening application fields

Active Publication Date: 2012-03-14
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
View PDF1 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of using this approach to improve the damping performance of composite materials is that while the damping performance of composite materials is improved, the mechanical properties (especially the interlaminar shear strength and flexural modulus) decrease significantly.
The more commonly used method is to use kevlar fiber with good damping performance and graphite fiber or high-performance glass fiber with excellent mechanical properties to mix, use kevlar fiber to cover the outer layer of the material, and graphite fiber or high-performance glass fiber to cover the inner layer The sandwich hybrid method can double the damping performance of the material, but the problem is that although the composite material still retains good mechanical properties, the damping performance of the material is not high enough, generally 0.01-0.03, and the cost is too high , is not conducive to the promotion and application of materials

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Structural high-damping fiber-reinforced composite
  • Structural high-damping fiber-reinforced composite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The thickness ratio of the rigid layer composite material layer 2 to the flexible damping composite material layer 1 is 1:8. The requirements for each component are as follows:

[0023] Flexible Damping Composite Layer 1:

[0024] The reinforcing material of the flexible damping composite material layer 1 adopts basalt fiber plain weave cloth; the resin matrix formula of the flexible damping composite material layer consists of (parts by weight): 40 parts of E-51 epoxy resin, 60 parts of DER732 flexible epoxy resin, T31 curing 10 parts of agent, 40 parts of 5784 curing agent, 1.5 parts of KH560 coupling agent, 1 part of gas phase white carbon black, 5 parts of 501 thinner. The curing conditions are 24 hours at room temperature and 6 hours post-curing at 80°C.

[0025] The fiber content (percentage by weight) of the flexible layer composite material is 65%, and the thickness of the flexible damping composite material layer 1 is 8mm.

[0026] Rigid Composite Layer 2: ...

Embodiment 2

[0033] The thickness ratio of the rigid layer composite material layer 2 to the flexible damping composite material layer 1 is 1:2. The requirements for each component are as follows:

[0034] Flexible Damping Composite Layer 1:

[0035] The reinforcing material of the flexible damping composite material layer 1 is MW210 high-modulus glass fiber twill fabric, and the resin matrix formula of the flexible damping composite material layer is composed of (parts by weight): 20 parts of DER331 epoxy resin, 80 parts of 6350 flexible epoxy resin, T31 curing agent 20, 5784 curing agent 25 parts, KH560 coupling agent 1.5 parts, gas phase white carbon black 2 parts, 501 thinner 8 parts. The curing conditions are 24 hours at room temperature and 6 hours post-curing at 80°C.

[0036] The fiber content (weight percentage) of the flexible layer composite material is 50%, and the thickness of the flexible damping composite material layer 1 is 15 mm.

[0037] Rigid Composite Layer 2:

[00...

Embodiment 3

[0044] The thickness ratio of the rigid layer composite material layer 2 to the flexible damping composite material layer 1 is 1:4. The requirements for each component are as follows:

[0045] Flexible Damping Composite Layer 1:

[0046] The reinforcing material of the flexible damping composite material layer 1 is MW210 high-modulus glass fiber twill fabric, and the resin matrix formula of the flexible damping composite material layer consists of (parts by weight): 50 parts of E44 epoxy resin, 50 parts of LER0350 flexible epoxy resin, T31 Curing agent 15, 40 parts of 5784 curing agent, 1.5 parts of KH560 coupling agent, 1 part of gas phase white carbon black, 5 parts of 501 thinner. The curing conditions are 24 hours at room temperature and 6 hours post-curing at 80°C.

[0047] The fiber content (weight percentage) of the flexible layer composite material is 50%, and the thickness of the flexible damping composite material layer 1 is 1 mm.

[0048] Rigid Composite Layer 2:...

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
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a structural high-damping fiber-reinforced composite, which comprises a flexible damping composite intermediate layer and a rigid composite outer layer, wherein both the flexible damping composite intermediate layer and the rigid composite outer layer are plain, satin and cross grain fabrics which are combined by resin matrixes and reinforced fibers that are basalt fibers or high-strength or high-modulus glass fibers; the resin matrix of the intermediate layer is a mixture of flexible epoxy resin and common flexible epoxy resin in a certain proportion and the resin matrix of the outer layer is common epoxy resin; and the epoxy value of the flexible epoxy resin is 0.2 to 0.4 and is reinforced and modified by a rubber elastomer, thermoplastic resin, organic silicon and a thermotropic liquid crystalline polymer. The composite has the advantages that: the drawback brought by damping modification of resin that the mechanical performance of the damping composite degrades obviously is overcome and the loss factor in damping of the composite is more than 0.05 on the basis of retaining the mechanical performance of the common fiber reinforced composite; and the performance-to-price ratio of the raw material is high, and application range of the structural high-damping fiber-reinforced composite is enlarged.

Description

technical field [0001] The invention relates to a non-metallic composite material technology, in particular to a structural high-damping fiber-reinforced composite material. Background technique [0002] Structural damping composite material is a kind of fiber-reinforced resin composite material with good damping performance and certain mechanical properties. Structural and functional integration. [0003] European patent EP0337443 A1 discloses a damping composite material. The damping performance of the composite material is improved through the application of damping modified resin. The resin matrix is ​​synthesized by xylylene diamine and α-end linear aliphatic dibasic ester. Referred to as "MX nylon", the reinforcement material is glass fiber. The damping composite material produced by the above method has relatively good damping performance, but the mechanical performance drops very seriously and cannot be used as a structural material. Some domestic scholars use car...

Claims

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/04B32B27/38B32B27/26B32B27/20
Inventor 郭万涛冀冰吴医博
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP