A kind of audio internal shock-absorbing polyurethane elastomer and its intermediate

A polyurethane elastomer and intermediate technology, applied in the field of shock-absorbing polyurethane, can solve the problems of easy damage, short service life of speakers and high strength, and achieve the effects of good aging resistance, good aging resistance, and improved shock resistance.

Active Publication Date: 2016-01-06
上海井上高分子制品有限公司
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] High-end speaker products will use audio internal shock-absorbing polyurethane elastomers, but the existing audio internal shock-absorbing polyurethane elastomers are not reliable in terms of physical properties (such as tensile, tear strength, etc.) and are easily damaged
And it cannot achieve a better balance between product strength and shock-absorbing effect. Often the strength is high, and the corresponding shock-absorbing effect is not significant.
Coupled with poor aging resistance, the service life of the speaker is not long

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
  • A kind of audio internal shock-absorbing polyurethane elastomer and its intermediate
  • A kind of audio internal shock-absorbing polyurethane elastomer and its intermediate
  • A kind of audio internal shock-absorbing polyurethane elastomer and its intermediate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] The mass percentage is 30% polyether polyol (Shanghai Gaoqiao GEP-330N), 55% polyether polyol (Shanghai Gaoqiao GMN-3050), 0.6% special surfactant (American Gas Company LK221), 1.0% crosslinking agent (BDO), 0.25% catalyst (K-15), 5% nano-zinc oxide (Haitai Nano HTZn-01), 3.15% water, 5% cell opener (303E) mixed Intermediate A made of polyurethane elastomer for internal shock-absorbing audio.

[0061] The obtained intermediate A and the TDI / MDI mixture B with an isocyanate index of 0.85 were prepared into a polyurethane elastomer for acoustic internal shock absorption.

Embodiment 2

[0063] The mass percentage is 55% polyether polyol (Shanghai Gaoqiao GEP-360N), 30% polyether polyol (Shandong Dongda MN-3050), 0.6% special surfactant (American Gas Company LK443), 1% cross-linking agent (EG), 0.25% catalyst (BICAT8118), 5% nano zinc oxide (Beijing Deke Daojin Technology Co., Ltd. DK404), 3.15% water, 5% cell opener (KF-28) mixed Intermediate A of polyurethane elastomer for internal shock absorber of audio.

[0064] The obtained intermediate A and the TDI / MDI mixture B with an isocyanate index of 0.95 were prepared into a polyurethane elastomer for acoustic internal shock absorption.

Embodiment 3

[0066] The mass percentage is 35% polyether polyol (Shanghai Gaoqiao GEP-828), 50% polyether polyol (Shanghai Gaoqiao GMN-3050), 0.6% special surfactant (American Gas Company LK443), 1 % cross-linking agent (MOAC), 0.25% catalyst (BICAT8108), 5% nano-zinc oxide (Haitai Nano HTZn-01), 3.15% water, 5% cell opener (303E) mixed to make audio inner shock-absorbing polyurethane elastic Body intermediate A.

[0067] The obtained intermediate A and the TDI / MDI mixture B with an isocyanate index of 1.0 were prepared into a polyurethane elastomer for acoustic internal shock absorption.

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
porosityaaaaaaaaaa
Login to view more

Abstract

The invention provides a shock-absorbing polyurethane elastomer in sound devices and intermediates thereof. The intermediates comprise a component A composed of polyether polyol (Shanghai Gaoqiao GEP-330N, GEP-360N, GEP-828), polyether polyol (Shanghai Gaoqiao GMN-3050, Shandong Dongda MN-3050), a surfactant, a cross-linking agent, a catalyst, water and a hole-opening agent. The invention further provides the sound-absorbing polyurethane in the sound devices prepared by the intermediates A. The product provided by the invention is reliable in physical properties, excellent in sound-absorbing effects and suitable in hardness and rebound coefficient, can effectively absorb shock, and is excellent in aging resistance performance.

Description

technical field [0001] The invention relates to the field of shock-absorbing polyurethane, in particular to an acoustic internal shock-absorbing polyurethane. Background technique [0002] High-end speaker products will use audio internal shock-absorbing polyurethane elastomers, but the existing audio internal shock-absorbing polyurethane elastomers are unreliable in terms of physical properties (such as tensile and tear strength, etc.) and are easily damaged. And it cannot achieve a better balance between product strength and shock absorbing effect. Often the strength is high, and the corresponding shock absorbing effect is not significant. Coupled with the poor aging resistance, the service life of the speaker is not long. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies of the prior art and solve many problems in the prior art, such as reliable physical properties, excellent sound-absorbing effect, and suitable sof...

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 Patents(China)
IPC IPC(8): C08G18/48C08K3/22C08G101/00
Inventor 陈玲霞吕佳男夏青青
Owner 上海井上高分子制品有限公司
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