Noise damping thermoplastic composition

A thermoplastic composition, damping technology, used in the field of noise damping products, noise components, can solve problems such as obstruction, insufficient rigidity, modulus strength or high temperature resistance

Inactive Publication Date: 2014-02-12
EI DU PONT DE NEMOURS & CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, thermoplastic resins blended with viscoelastic elastomers provide good damping properties, however, typically they do not have sufficient stiffness, modulus strength, or high temperature resistance to prevent their application, such as in powertrain systems in transportation vehicles. Parts etc.

Method used

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  • Noise damping thermoplastic composition
  • Noise damping thermoplastic composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0118] 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.

[0119] Material

[0120] (a) PA / GF: manufactured by DuPont Co. under the trade name Polyamide 6,6 of PLS95G35 containing 35% by weight of glass fiber reinforcement. The general processing temperature and density of its melt extrusion are 280-300°C and 1.42g / cm 3 .

[0121] (b) SEBS-g-MA: produced by Kraton Polymer, USA, trade name FG1901G. FG1901G is a transparent linear ternary block copolymer based on styrene and ethylene / butylene, with a polystyrene content of 30%, modified with about 1.4 wt% ~ 2.0 wt% maleic anhydride. Its MFI and density are 14-28g / 10min (at 230°C and 5Kg load) and 0.91g / cm respectively 3 . in the melt mix For FG1901G, the maximum processing temper...

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Abstract

The present invention discloses a thermoplastic composition with characteristics of excellent vibration damping and noise inhibition, and a molding product prepared from the thermoplastic composition in a low cost manner. The noise damping thermoplastic composition contains (a) 75-98.9 wt% of fiber reinforcement agent-containing polyamide,; (b) 0.5-10 wt% of an impact modifier, (c) 0.5-5 wt% of nanometer clay, (d) 0.1-10 wt% of polyolefin, and (e) 0-15 wt% of other additives, wherein the component (d) polyolefin is not polyethylene.

Description

technical field [0001] The present invention relates to thermoplastic compositions having improved noise vibration damping properties. The compositions of the present invention are particularly suitable for use as components for damping noise generated by internal components of drive trains in vehicles. The invention also relates to noise damping articles molded from said composition. Background technique [0002] Thermoplastic composites have emerged as a powerful lightweight alternative to metals when materials with high stiffness, high strength and low expansion are required. These composite materials have been used particularly effectively as components in, for example, motor vehicles, commercial aircraft, aviation, household appliances, computer hardware, leisure and sports, machines, energy devices, buildings or machinery. [0003] Although the light weight and tailorability of thermoplastic composites provide an effective way to optimize the design of components tha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08L77/06C08L77/00C08L51/00C08L51/06C08L23/12C08L23/14C08L23/20C08K13/06C08K9/04C08K7/14C08K7/06C08K3/34
CPCC08L77/06C08L77/02C08L2205/03C08L2205/035C08L23/12C08L51/00C08K7/14C08K9/04C08K3/346C08L23/20C08L23/14
Inventor 王颖娟席劲
Owner EI DU PONT DE NEMOURS & CO
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