Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Constraint sheet, gradient damping structure comprising same and preparation method

A damping structure and sheet technology, applied in the field of damping materials, can solve the problems of low damping performance of restraint damping materials, weak restraint effect of damping layer, easy failure of restraint effect, etc., and achieve the effect of improving damping.

Pending Publication Date: 2022-01-14
CHENGDU MACKO MACROMOLECULAR MATERIALS
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a single constrained layer cannot constrain the damping layer very well, and the restraining effect on the damping layer is weak. When the damping layer is subjected to a large force, its restraining effect is prone to failure, resulting in low damping performance of the constrained damping material.

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
  • Constraint sheet, gradient damping structure comprising same and preparation method
  • Constraint sheet, gradient damping structure comprising same and preparation method
  • Constraint sheet, gradient damping structure comprising same and preparation method

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0042]Preparation of damping sheet: Preheat the mixer at 120°C for 10 minutes, cut 100 phr of butyl rubber into thin slices, put it into the mixer and crush it for 10 minutes, add 100 phr CaCO3 and 100 phr polyisobutylene to adjust the viscosity of the system;

[0043] Add 50, 100, 150, and 200 phr of petroleum resin to the above-mentioned butyl rubber, and knead at 120°C for 120 minutes to obtain damping sheet materials with different glass transition temperatures. ℃, 10MPa hot pressing for 5 minutes, and then cold pressing to room temperature under the same pressure to form damping sheets with different glass transition temperatures; respectively numbered IIR1, IIR2, IIR3, IIR4.

[0044] Among them, the glass transition temperature of IIR1 is -46.7°C; the damping peak value is 1.52, and the temperature corresponding to the damping peak value is 34.3°C.

[0045] IIR2 glass transition temperature -31.6°C; damping peak 1.59, the temperature corresponding to the damping peak is ...

Embodiment 1-5

[0051] Table 1 shows the specific structure of the multi-layer damping material in Examples 1-5, wherein the serial number 1 indicates the layer close to the base steel, the serial number 2 is the second layer, and so on, and the unit of the thickness of each layer is mm.

[0052] The multi-layer constrained damping material of Table 1 Embodiment 1-5

[0053]

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
Elastic modulusaaaaaaaaaa
Login to View More

Abstract

The invention relates to the technical field of damping materials, in particular to a constraint sheet, a gradient damping material comprising the same and a preparation method. The constraint sheet comprises a supporting plate and a coating layer, the supporting plate is provided with a plurality of holes, and the coating layer covers the outer surface of the supporting plate and fills the holes; on one hand, the wrapping layer can form a whole, on the other hand, the wrapping layer penetrates through the supporting plate, connection between the supporting plate and the wrapping layer is more stable, when a restraining layer is subjected to external force, the wrapping layer and the restraining layer are not prone to sliding, and more restraining effects can be provided. According to the restraint sheet, the restraint sheet comprises the supporting plate made of a metal material and the wrapping made of a high polymer material, a plurality of holes are formed in the supporting plate, and the wrapping layer is loaded on the surface of the supporting plate and in the holes; and the high polymer material and the metal material are compounded to provide constraining force for constraining the sheet, so that the damping property of the damping material is improved.

Description

technical field [0001] The invention relates to the technical field of damping materials, in particular to a constrained sheet, a gradient damping structure containing it and a preparation method. Background technique [0002] Ships are equipped with a large number of mechanical equipment, and these mechanical equipment will inevitably produce vibration and noise when they are working. The use of constrained damping structures for vibration reduction can reduce the impact of vibration and noise on ships, that is, laying high damping materials on vibrating structures to absorb and consume the energy generated by structural vibrations, thereby achieving the effect of vibration and noise reduction. [0003] At present, many multi-layer damping materials are researched and applied in the form of alternate arrangement of "free layer-constrained sheet-". This arrangement can improve the damping performance of the structure as a whole, but it widens the structural damping temperatu...

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
IPC IPC(8): B32B3/24B32B15/20B32B15/092B32B27/38B32B27/20B32B3/04B32B25/18B32B25/08B32B37/06B32B37/10B32B37/15B32B38/04
CPCB32B3/266B32B15/20B32B15/092B32B27/38B32B27/20B32B3/04B32B25/18B32B25/08B32B37/06B32B37/10B32B37/15B32B38/04B32B2038/047B32B2307/56B32B2250/42B32B2262/101
Inventor 李姜郭少云袁念眉熊光超
Owner CHENGDU MACKO MACROMOLECULAR MATERIALS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com