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Polyurethane foam plate with rib-shaped bionic non-smooth surface and preparation method of polyurethane foam plate

A technology of polyurethane foam board and non-smooth surface, which is applied in the field of bionic non-smooth surface polyurethane foam board and its preparation, can solve problems such as stay and vacancy, and achieve improved sound absorption performance, improved sound absorption performance, and increased absorption rate Effect

Pending Publication Date: 2018-07-10
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, this field only stays in the research on non-smooth surface noise reduction, and there is a gap in the research on sound absorption;

Method used

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  • Polyurethane foam plate with rib-shaped bionic non-smooth surface and preparation method of polyurethane foam plate
  • Polyurethane foam plate with rib-shaped bionic non-smooth surface and preparation method of polyurethane foam plate
  • Polyurethane foam plate with rib-shaped bionic non-smooth surface and preparation method of polyurethane foam plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Design and manufacture of polyurethane foam panels with biomimetic non-smooth morphology of triangular ribs.

[0047] refer to figure 1 and figure 2 , the non-smooth surface shape of the polyurethane foam board is formed by triangular ribs uniformly distributed in concentric rings on the surface of the substrate. The cross-section of the triangular ribs is an equilateral triangle with a side length of 5 mm. The shape distance L is 7mm. The base body 1 and protrusion 2 are made of polyurethane raw materials, and the material thickness is 30mm. Compared with the smooth surface polyurethane foam of the same base material, the triangular rib-shaped polyurethane foam designed and manufactured has significantly improved mid-frequency and high-frequency sound absorption performance, and the quality is reduced by 5.5 %.

Embodiment 2

[0049] Design and manufacture of polyurethane foam panels with biomimetic non-smooth morphology with trapezoidal ribs.

[0050] refer to image 3 and Figure 4 , the non-smooth surface shape of the polyurethane foam board is formed by trapezoidal ribs that are evenly distributed in concentric circles on the surface of the substrate. The cross-section of the trapezoidal ribs is an isosceles trapezoid. is 5mm, and the distance L between adjacent trapezoidal ribs is 5mm. The base body 1 and protrusion 2 are polyurethane raw materials, and the thickness of the material is 30mm. Compared with the smooth surface polyurethane foam of the same base material, the designed and manufactured trapezoidal rib-shaped polyurethane foam has significantly improved mid-frequency and high-frequency sound absorption performance, and the quality is reduced by 4.8 %.

[0051] In summary of the above embodiments, the positive effects obtained by the present invention can be seen from the following...

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Abstract

The invention discloses a polyurethane foam plate with a rib-shaped bionic non-smooth surface. The polyurethane foam plate comprises a basal plate, wherein the upper surface of the basal plate is provided with a bulge; the bulge and the basal plate are of an integral structure and respectively made of polyurethane; and the bulge is a triangular rib body or a trapezoidal rib body which is uniformlydistributed in a concentric circular ring shape. The invention provides the polyurethane foam plate with the rib-shaped bionic non-smooth surface and a preparation method. In a smaller thickness range, the sound absorption performance is excellent, and a purpose of absorbing the sound and reducing the noise is achieved.

Description

technical field [0001] The invention relates to the technical field of acoustic materials, in particular to a bionic non-smooth surface polyurethane foam board with a rib shape and a preparation method thereof. Background technique [0002] The non-smooth surface bionic theory refers to the non-smooth characteristics of the biological surface that the organisms show for their own survival to adapt to the environment. The state of the surface of the organism is shown as a biological non-smooth surface, and this characteristic shown by the surface of the organism is an objective existence in nature. Non-smooth bionic technology is a scientific application technology to solve engineering problems based on the non-smooth biological structure in nature. [0003] With the development of the automobile industry, automobile manufacturers have increasingly strict requirements on the NVH performance of automobiles. The quality of acoustic packaging directly affects the level of nois...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10K11/162C08G18/66C08G18/48C08G18/32C08J9/08
CPCG10K11/162C08G18/3281C08G18/48C08G18/6688C08G2110/0083
Inventor 陈书明张继修戢杨杰张喆谷飞鸿王登峰
Owner JILIN UNIV
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