Noise damping composition

A damping and composition technology, applied in the field of noise damping products, can solve problems such as increasing weight, and achieve the effects of low cost, excellent vibration damping performance, and excellent noise suppression.

Inactive Publication Date: 2012-07-11
EI DU PONT DE NEMOURS & CO
View PDF7 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Another disadvantage of this method is that it adds a lot of weight to the original weight of its underlying structure, sometimes as much as 20-30%

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
  • Noise damping composition
  • Noise damping composition
  • Noise damping composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0094] The abbreviation "E" means "Example", "C" means "Comparative Example", followed by a number indicating in which example the composition was prepared. All examples and comparative examples were prepared and tested in a similar manner. Percentages are by weight unless otherwise indicated.

[0095] Material

[0096] PA1: polyamide 66 resin, produced by DuPont, trade name 101LNC010.

[0097] PA2: polyamide 66, which contains 35% by weight of reinforced glass fibers, produced by DuPont under the trade name 70G35BK267.

[0098] PA3: polyamide 6, which contains 35% by weight of reinforced glass fibers, produced by DuPont under the trade name 73G35BK262.

[0099] N-ZnO: short for nano-zinc oxide, with an average particle size of about 30 nm, surface-modified with 2 wt% KH570; purchased from Hangzhou Wanjing New Material Co., Ltd., China. KH570 is a silane coupling agent, 3-(methacryloyloxy)propyltrimethoxysilane (cas number 2530-85-0).

[0100]T-ZnOw: Abbreviation ...

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
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to view more

Abstract

The invention relates to a noise damping composition, and in particular discloses a thermoplastic composition with excellent vibration damping performance and noise inhibition performance and a molded product prepared from the thermoplastic composition. The molded product can be produced in low cost. The noise damping composition contains (a) about 50 to 85 weight percent of polyamide, (b) about 5 to 45 weight percent of fiber reinforcing agent, (c) about 1 to 25 weight percent of zinc oxide and (d) about 0 to 15 weight percent of other additives on the basis of the total weight of the noise damping composition, wherein the noise damping composition does not contain a flame retardant basically.

Description

technical field [0001] The present invention relates to thermoplastic compositions having improved vibration damping and noise suppression. The compositions of the invention are particularly suitable for use in damping noise generated by drive train internal components in vehicles. The invention also relates to noise damping articles molded from said composition. Background technique [0002] Fiber-reinforced composites have emerged as a powerful lightweight alternative to metals when materials with high specific stiffness, high strength, and controlled expansion are required. These composite materials have been effectively used in commercial transportation systems. While the customizability of composite materials provides an effective avenue for design optimization of components that must meet lightweight and stringent thermal and mechanical system requirements, these components still exhibit suboptimal vibration and noise levels. For example, engine noise can be transmi...

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 Applications(China)
IPC IPC(8): C08L77/00C08L77/02C08L77/06C08L77/10C08K7/14C08K7/06C08K7/08C08K3/22
CPCC08K3/22C08K7/02C08L77/00C08K2003/2296B82Y30/00C08J5/04C08K7/08C08K13/04
Inventor 王颖娟王枫
Owner EI DU PONT DE NEMOURS & CO
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap