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Damping material

A technology of vibration-damping materials and vibrating bodies, which is applied in the field of vibration-damping materials and can solve the problems of insufficient lightness and lightness of vibration-damping plates, etc.

Inactive Publication Date: 2007-07-04
SEKISUI CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Since the vibration damping plate contains inorganic powdery objects inside, the vibration energy is converted into heat loss, so the specific gravity is 1g / cm 3 The above has the problem of insufficient lightness
[0005] In addition, in addition to the above-mentioned damping plate, the vibration of the vibrating body is attenuated by pasting a heavy-weight damping plate on the vibrating object (hereinafter also referred to as "vibrating body"), but the lightness of the damping plate is also insufficient. The problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073]Mix the following ingredients evenly and filter to make adhesive latex, water-acrylic adhesive latex (manufactured by DAINIPPON INK AND CHEMICALS, INCORPORATED) trade name: Boncoat 350 (VONCOAT 350) Acrylic adhesive component (resin component): 50% by weight] 90 parts by weight, water-polyurethane adhesive latex [Dainippon Ink and Chemicals (DAINIPPON INK AND CHEMICALS, INCORPORATED) product name: Hidlan HW-930 ( HYDRAN HW-930), polyurethane-based adhesive component (resin component): 50% by weight] 10 parts by weight, epoxy-based crosslinking agent (Dainippon インキキキキキロスタル (DAINIPPON INK AND CHEMICALS, INCORPORATED) trade name: CR -5L) 3 parts by weight, ammonium chloride type foaming agent (Dainippon インキ chemical company (DAINIPPON INK AND CHEMICALS, INCORPORATED) manufacturer trade name: F-1) 5 parts by weight, polysiloxane type foam stabilizer (Dainippon INK AND CHEMICALS, INCORPORATED) DAINIPPON INK AND CHEMICALS, INCORPORATED (DAINIPPON INK AND CHEMICALS, INCORPORATE...

Embodiment 2

[0079] Use 21 parts by weight of azodicarbonamide instead of 14 parts by weight, replace the thickness of the foamable resin board with 2.6 mm for 1.3 mm, and irradiate electrons with an accelerating voltage of 500 kV and 3.8 Mrad instead of an accelerating voltage of 800 kV and 2.4 Mrad. ray, and the same method as in Example 1 was used to obtain a thermoplastic resin foamed plate. Among them, the thickness of the thermoplastic resin foam board is 8.6mm and the density is 0.033g / cm 3 . The Young's modulus of the thermoplastic resin foam board was 1.40 MPa. Furthermore, the foamed adhesive layer produced in the same manner as in Example 1 was laminated and integrated on one side of the above-mentioned thermoplastic resin foam board in the same manner as in Example 1 to obtain a vibration-damping material with a thickness of 10.5 mm. .

Embodiment 3

[0081] The following components were supplied to an extruder, melted and kneaded, and extruded to obtain a foamable resin plate with a thickness of 1.2 mm. Polypropylene-based resin composed of 45 parts by weight of ethylene-propylene random copolymer (trade name: XK0235 manufactured by Chisso Corporation) and 15 parts by weight of isotactic homopolypropylene (trade name: SH152 manufactured by Idemitsu Corporation), linear Low-density polyethylene (trade name: 0238CN manufactured by Idemitsu Corporation) 40 parts by weight, azodicarbonamide 6.8 parts by weight, crosslinking agent (trade name: TND-23H manufactured by Kyoei Chemical Co., Ltd.) 3 parts by weight, antioxidant A ( Asahi Denka trade name: ADEKASTAB AO-60 (ADEKASTAB AO-60)) 1 part by weight, antioxidant B (ADEKASTAB CDA-1 (ADEKASTAB CDA-1)) 0.5 part by weight, and antioxidant C (trade name manufactured by Ouchi Shinko Chemical Co., Ltd.: NOCRAC400S (NOCRAC400S)) 0.5 parts by weight.

[0082] Both surfaces of the obt...

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Abstract

A damping material having excellent damping and lightweight characteristics, especially a damping material that can find suitable application in automobile uses wherein light weight is demanded. There is provided a damping material characterized in that a foam adhesive layer is superimposed on one major surface of a thermoplastic resin foam sheet and unified. Thus, the damping material exerts excellent damping property such that any vibrational energy conveyed to the damping material is smoothly absorbed by a synergistic effect of rigidity of the thermoplastic resin foam sheet with viscoelasticity of the foam adhesive layer. Moreover, this damping material excels in weight saving, so that it can find suitable application in uses wherein light weight is demanded, for example, uses for vehicles such as automobiles and railways and due to light weight, excels in workability.

Description

technical field [0001] The present invention relates to a vibration-damping material having excellent vibration-damping properties and light weight. Background technique [0002] Conventionally, damping materials have been used in electrified products to reduce the vibration of driving devices such as electric motors. In addition, in construction applications, damping materials are used to reduce the rain noise of folded roofs, etc.; in automotive applications, in order to reduce the vibration sound or engine, etc. Vibration-absorbing materials are used to drive system vibrations. [0003] As the vibration damping material, Patent Document 1 proposes a vibration damping plate for a folding ceiling on a vibration damping plate base composed of rubber, thermoplastic elastomer, thermoplastic resin, and inorganic powder. It is formed by accumulating a layer of ethylene terephthalate resin on one side of the material. [0004] Since the vibration damping plate contains inorgan...

Claims

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Application Information

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IPC IPC(8): F16F15/02
Inventor 山田穰二井上智弘足立浩一
Owner SEKISUI CHEM CO LTD
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