Active protection flexible composite structure and preparation method thereof
A technology of active protection and composite structure, applied in the direction of protective equipment, protective clothing, chemical instruments and methods, etc., to achieve high impact strength, increase impact energy, and improve the effect of active protection
Active Publication Date: 2021-11-09
北京理工大学重庆创新中心 +1
View PDF4 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Stimulating magnetorheological materials through magnetic fields is a feasible way to achieve active protection, that is, to actively harden materials to resist impacts through magnetic field stimulation before the materials are impacted. However, applying magnetorheological adhesives to the field of protection requires an external magnetic field excitation device, which is Difficulties limiting its application in flexible impact-resistant composite structures
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0018] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail below through specific implementation methods in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0019] In one embodiment, such as Figure 1-5 As shown, an active protective flexible composite structure is provided, including a magnetic fluid modified flexible fabric composite layer 1 and an electromagnetic module 2, wherein the electromagnetic module 2 is arranged on the surface of the magnetic fluid modified flexible fabric composite layer 1, and the electromagnetic module 2 Including front copper foil 21, insulating coating layer 22, piezoelectric ceramic sheet 23, back copper foil 24 and electromagnetic coil 25; piezoelectric ceramic sheet 23 is arranged in electr...
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
| Property | Measurement | Unit |
|---|---|---|
| density | aaaaa | aaaaa |
Login to View More
Abstract
The invention provides an active protection flexible composite structure and a preparation method thereof. According to the scheme, a piezoelectric ceramic piece and an electromagnetic coil layer are designed,and when the piezoelectric ceramic piece is impacted, an instantaneous current is released, and a high-intensity magnetic field is formed in the coil. Under the action of strong magnetism, a magnetofluid modified flexible fabric composite layer is actively hardened, so that the magnetofluid modified flexible fabric composite layer has higher impact strength. In other words, under the condition that the flexibility of the structure is guaranteed, the active protection effect, namely, the impact energy resistance is improved in an active hardening mode, is achieved.
Description
technical field [0001] The invention relates to the technical field of composite structures, in particular to an active protective flexible composite structure and a preparation method thereof. Background technique [0002] With the increasing demand for mobility and comfort, the development of protective materials has gone from hard materials (metals, ceramics), to semi-rigid materials (metals, ceramics and fiber composites), to emerging flexible materials (fibers) Composite structure). In addition to fiber materials, shear thickening materials and magnetorheological materials have also been applied to the field of protective equipment. Shear-thickening liquid is a non-Newtonian reversible fluid, which is in the form of dispersed colloid when in equilibrium, but under the action of high-speed shear force, the viscosity increases rapidly and appears in the form of solid. Using this characteristic of shear thickening liquid to compound it with fiber materials is the frontie...
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
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/20B32B9/00B32B9/04B32B3/04B32B3/08B32B3/12B32B3/14B32B7/12B32B15/14B32B15/085B32B15/088B32B27/02B32B27/32B32B27/34B32B33/00B32B38/08B32B38/16B32B37/12H01F5/00H01F41/02
CPCB32B15/20B32B9/005B32B9/041B32B3/04B32B3/08B32B3/12B32B3/14B32B7/12B32B15/14B32B15/085B32B15/088B32B5/02B32B33/00B32B38/08B32B38/164B32B37/12H01F5/00H01F41/02B32B2260/021B32B2260/048B32B2262/0269B32B2262/0253B32B2571/00B32B2307/558
Inventor 兰旭柯马宇黄广炎王涛
Owner 北京理工大学重庆创新中心