CN203331526U

CN203331526U - Acoustic foam plastic board

Info

Publication number: CN203331526U
Application number: CN2013203740475U
Authority: CN
Inventors: 钱嘉良
Original assignee: Wuxi Tongxin Plastic Products Co Ltd
Current assignee: Wuxi Tongxin Plastic Products Co Ltd
Priority date: 2013-06-27
Filing date: 2013-06-27
Publication date: 2013-12-11
Anticipated expiration: 2023-06-27

Abstract

The utility model discloses an acoustic foam plastic board. The acoustic foam plastic board at least comprises a first foam plastic board and a second foam plastic board, wherein the first foam plastic board and the second foam plastic board are bonded into a whole; semi-spherical slots are uniformly distributed on the surfaces, bonded with each other, of the first and second foam plastic boards respectively; the ratio of the diameters of the semi-spherical slots on the first foam plastic board to the diameters of the semi-spherical slots on the second foam plastic board is 1:(0.5-0.7). The acoustic foam plastic board has the beneficial effects that the semi-spherical slots are only formed in the foam plastic boards; the acoustic foam plastic board is simple to process and simultaneously can avoid the impacts of through holes adopted in the prior art on the strength of the foam plastic boards; the average sound absorption coefficient of the acoustic foam plastic on the low and medium frequency (100-1500Hz) is 0.59.

Description

A kind of acoustic foam plastic plate

Technical field

The utility model relates to a kind of plastic plate, is a kind of plastic foamboard with sound absorption function specifically.

Background technology

Foamed plastics has light weight, the advantage such as heat insulation, be usually used in building and ornament materials, though existing foamed plastics also has certain sound absorption function, but mainly absorb medium-high frequency sound, the centering Low Frequency Sound Absorption is poor, the through hole of opening certain density on foamed plastics can improve the absorption of centering all-bottom sound to a certain extent, but adopts through-hole structure can cause the remarkable reduction of foamed plastics intensity.

The utility model content

The purpose of this utility model is the above-mentioned defect that overcomes prior art, and a kind of acoustic foam plastic plate is provided.

The utility model realizes that the technical scheme that above-mentioned purpose adopts is as follows:

A kind of acoustic foam plastic plate, at least comprise the first plastic foamboard and the second plastic foamboard, described the first plastic foamboard and described the second plastic foamboard are bonded as one, mutually on bonding face, be evenly distributed with respectively semi-spherical grooves at described the first plastic foamboard and described the second plastic foamboard, wherein, the ratio of the diameter of the diameter of the semi-spherical grooves on described the first plastic foamboard and the semi-spherical grooves on described the second plastic foamboard is 1:(0.5 ~ 0.7).

Further, the diameter of the semi-spherical grooves on described the first plastic foamboard is 3～4mm.

Further, the Thickness Ratio of the thickness of described the first plastic foamboard and described the second plastic foamboard is 1:(1～0.5).

Further, the thickness of described the first plastic foamboard is 6～8mm.

Further, described the first plastic foamboard and the second plastic foamboard are polystyrene foam plastics.

Beneficial effect: the utility model acoustic foam plastic plate only arranges semi-spherical grooves on plastic foamboard, processing is simple, can avoid again prior art to adopt the impact of through-hole foam plastic plate intensity, these acoustic foam plastics are 0.59 at the average sound absorption coefficient of medium and low frequency (100-1500Hz) simultaneously.

The accompanying drawing explanation

The schematic diagram that Fig. 1 is the utility model acoustic foam plastic plate.

The schematic diagram that Fig. 2 is the first plastic foamboard in the utility model acoustic foam plastic plate.

The schematic diagram that Fig. 3 is the second plastic foamboard in the utility model acoustic foam plastic plate.

The acoustic absorptivity that Fig. 4 is the utility model acoustic foam plastic plate.

Wherein, 1-the first plastic foamboard, 2-the second plastic foamboard, (11,21)-semi-spherical grooves.

The specific embodiment

Below in conjunction with drawings and Examples, the utility model is described in further details.

As described in Figure 1, acoustic foam plastic plate described in the utility model at least comprises the first plastic foamboard and the second plastic foamboard, described the first plastic foamboard and described the second plastic foamboard are bonded as one, mutually on bonding face, be evenly distributed with respectively semi-spherical grooves (as shown in Figures 2 and 3) at described the first plastic foamboard and described the second plastic foamboard, wherein, the ratio of the diameter of the semi-spherical grooves on the diameter of the semi-spherical grooves on described the first plastic foamboard and described the second plastic foamboard is 1:(0.5 ~ 0.7), when bonding, by the semi-spherical grooves of described the first plastic foamboard, with the semi-spherical grooves of described the second plastic foamboard, overlap corresponding.

The diameter of the semi-spherical grooves on described the first plastic foamboard is 3～4mm.

The Thickness Ratio of the thickness of described the first plastic foamboard and described the second plastic foamboard is 1:(1～0.5).

The thickness of described the first plastic foamboard is 6～8mm.

Embodiment 1

The first plastic foamboard and the second plastic foamboard all adopt polystyrene foam plastics to make, and wherein, the thickness of the first plastic foamboard is 6mm, and the thickness of the second plastic foamboard is 4mm; The first plastic foamboard wherein the diameter of semi-spherical grooves on one side be 4mm, the square dot matrix that semi-spherical grooves is 7mm by level interval distributes; The second plastic foamboard wherein the diameter of semi-spherical grooves on one side be 2.5mm, the square dot matrix that semi-spherical grooves is also 7mm by level interval distributes; The one side that the one side that with adhesive, the first plastic foamboard is provided with to semi-spherical grooves and plastic foamboard are provided with semi-spherical grooves has been bonded in and has made the first plastic foamboard and the second plastic foamboard integrator, when bonding, makes the semi-spherical grooves of described the first plastic foamboard mutually corresponding up and down with the semi-spherical grooves of described the second plastic foamboard.

Fig. 4 is the acoustic absorptivity that acoustic foam plastic plate of the present utility model and existing plastic foamboard record by GBJ88-1985, by measurement result, can be seen, acoustic foam plastic plate of the present utility model will be much better than the acoustic absorptivity of existing plastic foamboard at the acoustic absorptivity of medium and low frequency (100-1500Hz), its average sound absorption coefficient at 100-1500Hz is 0.59, and the average sound absorption coefficient of existing plastic foamboard is 0.42.

Claims

1. an acoustic foam plastic plate, it is characterized in that: at least comprise the first plastic foamboard and the second plastic foamboard, described the first plastic foamboard and described the second plastic foamboard are bonded as one, mutually on bonding face, be evenly distributed with respectively semi-spherical grooves at described the first plastic foamboard and described the second plastic foamboard, wherein, the ratio of the diameter of the diameter of the semi-spherical grooves on described the first plastic foamboard and the semi-spherical grooves on described the second plastic foamboard is 1:(0.5 ~ 0.7).

2. acoustic foam plastic plate according to claim 1, is characterized in that, the diameter of the semi-spherical grooves on described the first plastic foamboard is 3～4mm.

3. acoustic foam plastic plate according to claim 1, is characterized in that, the Thickness Ratio of the thickness of described the first plastic foamboard and described the second plastic foamboard is 1:(1～0.5).

4. acoustic foam plastic plate according to claim 3, is characterized in that, the thickness of described the first plastic foamboard is 6～8mm.

5. acoustic foam plastic plate according to claim 1, is characterized in that, described the first plastic foamboard and the second plastic foamboard are polystyrene foam plastics.