Polyurethane sound insulation board for automobile parts

A technology of auto parts and polyurethane, which is applied in the direction of vehicle parts, paper/cardboard layered products, coatings, etc., can solve the problems of being unable to block low-frequency noise, etc., and achieve the effect of improving partition effect, sound absorption effect and acoustic effect

Pending Publication Date: 2019-07-05
GREEN & LIGHT AUTOMOTIVE COMPONENTS SUZHOU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the fully enclosed hard cover has good sound insulation performance, it cannot block low-frequency noise

Method used

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  • Polyurethane sound insulation board for automobile parts
  • Polyurethane sound insulation board for automobile parts
  • Polyurethane sound insulation board for automobile parts

Examples

Experimental program
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Effect test

Embodiment Construction

[0014] The application will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the application and implement it, but the examples given are not intended to limit the application.

[0015] like figure 1 As shown, the application provides a polyurethane sound insulation panel for auto parts, the polyurethane sound insulation panel for auto parts includes a honeycomb panel 1, and the honeycomb cavity of the honeycomb panel 1 is filled with sound-absorbing materials 11 The upper and lower sides of the honeycomb panel 1 are respectively covered with glass fiber felt 2, and the honeycomb panel 1 covered with glass fiber felt 2 forms a closed substrate through a polyurethane coating 3, and the outer surface of the substrate is covered with outer layer 4. The sound-absorbing material 11 is formed by pressing or pouring or injecting polyurethane or sound-absorbing fiber into the hone...

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Abstract

The invention provides a polyurethane sound insulation board for automobile parts. The sound insulation board comprises a cellular board, wherein cellular cavities of the cellular board are filled with a sound absorption material; the upper and lower side faces of the cellular board are both covered with glass fiber felt; the cellular board covered with the glass fiber felt is foamed in a polyurethane spraying mold to form a sealed baseplate; the outer surface of the baseplate can be coated with an outer layer according to different demands of customers. According to the polyurethane sound insulation board for an automobile trunk, the sound absorption material is embedded into the cellular space of the cellular aluminum board, the space is fully utilized, and the acoustic effect is greatlyimproved. Pre-embedding of the sound absorption material solves the problem of poor acoustic performance of cover plates under the condition of not changing the structural strength and bearing performance of a product, is particularly suitable for solving the problem of low-frequency noise of a motor of an electric vehicle, and can be well improved in new products.

Description

technical field [0001] The application relates to a polyurethane sound-insulating panel for auto parts. Background technique [0002] In order to meet the requirements of high load and light weight, such as trunk cover, coat rack, rear seat back panel and rear storage panel, hollow paper honeycomb panels and glass fiber mats are usually sprayed with polyurethane or composite PP glass fiber mats. Inner molding. The thickness of the product is basically 10-30mm to meet different load-bearing requirements. For car trunks or others that have little space, the thickness of 10-30mm has already occupied a lot. In order to prevent the performance of paper honeycomb panels from damp, PU glass fiber or PP glass fiber seals the hollow honeycomb, but at the same time reduces the sound absorption effect of the cover. For hybrid and electric vehicles, the battery and motor are under the trunk, and the low-frequency noise pair of the motor and battery can easily be transmitted to the pas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B3/12B32B29/02B32B15/20B32B15/14B32B17/02B32B27/02B32B27/34B32B17/06B32B17/12B32B3/08B32B27/12B32B33/00B60R13/08
CPCB32B3/12B32B29/02B32B15/20B32B15/14B32B5/02B32B17/061B32B17/065B32B17/067B32B3/085B32B27/12B32B33/00B60R13/0823B32B2307/102B32B2605/08B32B2262/0261B32B2262/101B32B2255/26B32B2255/02
Inventor 杨俐石普辉
Owner GREEN & LIGHT AUTOMOTIVE COMPONENTS SUZHOU CO LTD
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