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Compound damping board and its manufacturing method

A compound damping and damping technology, applied in chemical instruments and methods, superstructure sub-assemblies, layered products, etc., can solve the problems of sound insulation, poor shock absorption, harsh preparation conditions, and high production costs, and achieves the goal of using less equipment. , the effect of low manufacturing cost and simple production process

Inactive Publication Date: 2006-04-26
戚广连
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the floor materials of passenger cars are mostly plywood, which has poor sound insulation and shock absorption effects, and has been gradually eliminated.
[0003] Chinese patent ZL98114310.5 discloses a damping panel for passenger car floors. The patent describes that this sandwich panel is made of plywood-damping panel-plywood. The main material of the viscoelastic glue in the damping panel is natural rubber, accounting for 30-60%, the preparation conditions are relatively harsh, and the production cost is also high

Method used

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  • Compound damping board and its manufacturing method
  • Compound damping board and its manufacturing method

Examples

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Effect test

Embodiment 1

[0015] The bottom plate 1 and the surface plate 3 are wooden plywood, both of which have a thickness of 6 mm; the thickness of the damping sandwich plate is 3 mm, and its formula is: recycled rubber powder 45%, asphalt 6%, waste plastic powder 5%, sulfur 3%, mica powder 10 %, zinc oxide 3%, wollastonite powder 26%, dioctyl phthalate 2%; the particle size of the regenerated rubber is 40 mesh, and the particle size of the powder in the filler is 60 mesh; the method is to mix the recycled rubber powder Desulfurization treatment, put it into the mixer, then put in the filling material, fully stir evenly, and then put this mixture on the open rubber mixer to extrude into a damping sandwich plate sheet with a thickness of 3mm; the two outer surfaces of the damping sandwich plate are uniform Impregnate the adhesive, place it between the bottom plate and the surface plate, lay it flat on the worktable of the hot press, press 10Mpa, heat up to 120°C, keep it for 15 minutes under the pre...

Embodiment 2

[0017] The bottom plate 1 and the surface plate 3 are bamboo plywood with a thickness of 7mm; the thickness of the damping sandwich plate is 2mm, and its formula is 40% of recycled rubber, 6% of asphalt, 3% of sulfur, 8% of waste plastic powder, and 15% of mica powder , calcite powder 18%, dioctyl phthalate 5%, zinc oxide 5%; The particle size of the powder in the filler is 80 orders; The manufacturing method step is the same as embodiment 1, and the molding condition of its composite damping plate is Apply a pressure of 10Mpa, heat up to 140°C, and press for 20 minutes.

Embodiment 3

[0019] Bottom board 1 bamboo plywood, thickness 3mm; surface board 3 wooden plywood 6mm; damping interlayer board thickness 6mm, its formula is recycled rubber powder 35%, mica powder 20%, waste plastic powder 5%, asphalt 5%, calcite powder 15%, ball clay powder 14%, sulfur 2%, zinc oxide 2%, dioctyl phthalate 2%; the particle size of the recycled rubber powder is 80 mesh, and the particle size of the powder in the filler is 40 mesh; manufacturing The steps of the method are the same as those in Example 1, and the molding conditions of the composite damping plate are as follows: applying a pressure of 16 MPa, heating to 140° C., and pressing for 6 minutes.

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Abstract

The invention discloses a composite damping board for the passenger car floor and a manufacturing method thereof. The composite damping board is formed by heating and pressing a bottom board, a damping sandwich board and a surface board; the damping sandwich board is made of recycled rubber and waste plastics. In the composite damping plate of the present invention, after the two outer surfaces of the sheet of the damping sandwich plate are impregnated with adhesive, they are placed between the bottom plate and the surface plate, heated on a hot press at 80-140°C, and pressed for 8- 16MPa, kept for 5-20 minutes made. The composite damping plate has a simple production process, less production equipment and low production cost, especially the use of waste rubber and plastics is beneficial to environmental protection and has good social benefits. The composite damping board has good sound insulation and shock absorption effects, and the average noise reduction index is 8-10dB(A), and can be widely used in passenger cars, trains, ships and occasions requiring sound insulation and shock absorption in buildings.

Description

technical field [0001] The invention relates to a material for the manufacture of transportation tools, in particular to a composite damping plate for the floor of passenger vehicles. Background technique [0002] At present, the floor materials of passenger cars are mostly plywood, which has poor sound insulation and shock absorption effects, and has been gradually eliminated. [0003] Chinese patent ZL98114310.5 discloses a damping panel for passenger car floors. The patent describes that this sandwich panel is made of plywood-damping panel-plywood. The main material of the viscoelastic glue in the damping panel is natural rubber, accounting for 30-60%, the preparation conditions are relatively harsh, and the production cost is also high. Contents of the invention [0004] The purpose of the present invention is to overcome the disadvantages of the prior art and provide a composite damping plate with good damping effec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B25/04B62D25/20
Inventor 戚广连
Owner 戚广连
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