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A lightweight motor-wrapped acoustic insulation material and preparation method thereof

A sound insulation material and lightweight technology, which is applied in the field of auto parts, can solve the problems of general sound insulation effect, inability to achieve light weight, and unsatisfactory odor VOC performance, etc., and achieve lightweight sound insulation effect, weight reduction, and good acoustic effect. Effect

Active Publication Date: 2022-02-11
NINGBO TUOPU GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a lightweight motor-wrapped acoustic sound-insulating material to solve the problem that most sound-insulating materials currently on the market have a general sound-insulating effect, and the performance of odor and VOC is not ideal, and at the same time, the problem of being unable to achieve light weight

Method used

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  • A lightweight motor-wrapped acoustic insulation material and preparation method thereof
  • A lightweight motor-wrapped acoustic insulation material and preparation method thereof
  • A lightweight motor-wrapped acoustic insulation material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0042] Example 1: Lightweight motor wrapped with acoustic sound insulation material

[0043] like figure 1 as shown, figure 1 It is a schematic diagram of the structure of the present invention. The lightweight motor-wrapped acoustic sound insulation material of the present invention includes non-woven fabric 1, MicroPro2, PE coating 3 and forming felt 4 arranged in sequence from top to bottom, and non-woven fabric 1 is sprayed on one side. The PE coating 3 is directly adhered to the surface of the forming felt 4 through the coating process. The surface density of the forming felt 4 is about 800~1500g / ㎡, and the thickness is about 2-5mm , the surface density of MicroPro 2 is about 800-1500g / ㎡, and the thickness is about 10-25mm. The hardness of the forming felt 4 is obviously greater than that of MicroPro2, and the thickness of the forming felt 4 is significantly thinner than that of MicroPro2.

[0044] As an improvement of the present invention, the PE coating 3 component b...

Embodiment 2

[0055] Example 2: Motor NVH analysis

[0056] 1. Carry out related noise tests on the motor / engine installed on the same car under unified test conditions, and test figure 2 As shown, it can be known from the figure that the noise of a car with a traditional engine (fuel car) is mainly concentrated in the low-frequency order noise of 100-2000 Hz, while the noise of a car with a motor (pure electric car) is mainly concentrated in the In the high-frequency noise of 1000-8000Hz, on the whole, the engine has a strong sense of movement, while the motor has a weak sense of movement. The noise of the traditional engine is greater than that of the motor.

[0057] 2. Carry out general motor noise characteristics and motor wrapping effect tests to the same motor before / after wrapping the lightweight motor wrapping acoustic insulation material of the present invention, and the test results are as follows: image 3 As shown in / 4 / 5, it can be obtained from image 3 , Figure 4 It can ...

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Abstract

The invention discloses a lightweight motor wrapping acoustic sound insulation material, which comprises non-woven fabric, MicroPro, PE coating and forming felt. The non-woven fabric is attached to the surface of the MicroPro by dusting on one side and heat-treated, and the PE (3) is directly adhered to the surface of the forming felt through a coating process. The hardness of the forming felt is obviously greater than that of MicroPro, and at the same time the thickness of the forming felt is thinner than that of MicroPro. The present invention further discloses the preparation method of the sound insulation material, including the preparation of each layer and the final forming process. Through the above-mentioned design, a new type of lightweight automotive motor acoustic package can be provided that can improve the flow resistance of the motor sound wave transmission, so as to achieve the purpose of reducing noise. The part has excellent comprehensive performance and has broad application prospects and development potential.

Description

technical field [0001] The invention relates to the technical field of auto parts, in particular to a lightweight motor-wrapped acoustic sound-insulating material and a preparation method thereof. Background technique [0002] With the gradual popularization of automobiles brought about by the development of the automobile industry, the voices of car owners for lower fuel consumption, quieter interior atmosphere and fresher and healthier interior environment are becoming stronger and stronger. Therefore, the lightweight of auto parts, It is particularly important to reduce noise in the car and improve the smell environment in the car. [0003] The sound insulation effect is an important factor to measure the quality of automobile manufacturing, and it is one of the most direct sensory effects brought to car owners. New energy vehicles generally use motors as drives, which have high noise, especially the high-frequency order noise, which is easily transmitted into the car an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60R13/08B32B27/02B32B27/12B32B27/36B32B27/34B32B27/32B32B33/00B32B37/06B32B37/10B32B38/00
CPCB60R13/0884B32B5/022B32B5/08B32B5/26B32B33/00B32B37/06B32B37/10B32B38/0004B32B2262/0284B32B2262/0253B32B2262/0276B32B2262/14B32B2605/08
Inventor 鄢锦程吴生提杨杉苗
Owner NINGBO TUOPU GROUP CO LTD