Title:
INTERMEDIATE-FREQUENCY-SOUND-ABSORBING POLYPROPYLENE COMPOSITION, AND PREPARATION METHOD THEREFOR AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2023/160495
Kind Code:
A1
Abstract:
An intermediate-frequency-sound-absorbing polypropylene composition, and a preparation method therefor and the use thereof. The intermediate-frequency-sound-absorbing polypropylene composition comprises the following components in parts by weight: 60-80 parts of polypropylene, 10-20 parts of high-density polyethylene, and 10-20 parts of mesoporous silica microspheres, wherein after the polypropylene is annealed at 120°C for 0.5 h, the ratio of the peak area thereof at 998 cm-1 to the peak area thereof at 973 cm-1 is 0.88-0.92, and the molecular weight distribution index of the polypropylene is 5-15. By means of the screening of an appropriate PP resin and the synergistic effect of same, HDPE and mesoporous silica microspheres, the damping performance of the polypropylene composition is changed, and the polypropylene composition can specifically absorb noise with a frequency of 300-800 Hz by means of resonance sound absorption.
Inventors:
ZHANG DONGWEI (CN)
TAO SIPING (CN)
CHEN PINGXU (CN)
YE NANBIAO (CN)
CHEN YANAN (CN)
WU YIJIAN (CN)
TAO SIPING (CN)
CHEN PINGXU (CN)
YE NANBIAO (CN)
CHEN YANAN (CN)
WU YIJIAN (CN)
Application Number:
PCT/CN2023/077175
Publication Date:
August 31, 2023
Filing Date:
February 20, 2023
Export Citation:
Assignee:
TIANJIN KINGFA ADVANCED MAT CO LTD (CN)
International Classes:
C08K7/26; C08L23/12; C08L23/06
Foreign References:
| CN114516988A | 2022-05-20 | |||
| CN108148282A | 2018-06-12 | |||
| CN111204770A | 2020-05-29 | |||
| CN107793637A | 2018-03-13 | |||
| CN112480549A | 2021-03-12 | |||
| CN112409689A | 2021-02-26 | |||
| US5082889A | 1992-01-21 |
Attorney, Agent or Firm:
YOGO PATENT AND TRADEMARK AGENCY LIMITED COMPANY (CN)
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