JP2016070389A - Damping structure and damping material - Google Patents
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Abstract
【課題】強度と制振性とに優れた制振構造体を提供すること。
【解決手段】繊維強化樹脂層と発泡層とを含む２層以上の積層構造を有する制振材を金属製部材に取付ける。
【選択図】 図１An object of the present invention is to provide a damping structure excellent in strength and damping performance.
A vibration damping material having a laminated structure of two or more layers including a fiber reinforced resin layer and a foam layer is attached to a metal member.
[Selection] Figure 1
Description
本発明は、金属製部材と、該金属製部材の振動を抑制するための制振材とを備えた制振構造体及び制振材に関する。 The present invention relates to a vibration damping structure and a vibration damping material including a metal member and a vibration damping material for suppressing vibration of the metal member.
従来、大型家電機器や車両のボディーの多くは、鋼板やアルミニウム板などの金属板で構成されている。
この大型家電機器や車両のボディーを構成する金属板には、その振動を抑制するための制振材たるゴムシートが裏貼りされたりしている。
このような金属板と金属板の振動を抑制するための制振材とを備えた制振構造体に関し、例えば、下記特許文献１においては、複数のゴム粒子を接着剤にて相互に結合一体化したゴムシートを制振材として利用することが記載されている。
Conventionally, many large home appliances and vehicle bodies are made of metal plates such as steel plates and aluminum plates.
A rubber sheet, which is a damping material for suppressing the vibration, is backed on the metal plate constituting the body of the large home appliance or vehicle.
For example, in Patent Document 1 below, a plurality of rubber particles are bonded and integrated with each other with an adhesive, with regard to a vibration damping structure including such a metal plate and a vibration damping material for suppressing vibration of the metal plate. It is described that a rubber sheet made into a rubber is used as a vibration damping material.
上記のような制振構造体は、制振性に優れるばかりでなく、軽量で強度に優れることが一般に要望されている。
しかしながら、ゴムシートが制振材として用いられている従来の制振構造体における当該ゴムシートの強度は、金属製部材の強度に比べてはるかに小さい。
従って、従来の制振構造体は、金属製部材が本来有している強度よりも高い強度を発揮させることが困難である。
The vibration damping structure as described above is generally required to be not only excellent in vibration damping properties but also lightweight and excellent in strength.
However, the strength of the rubber sheet in the conventional damping structure in which the rubber sheet is used as a damping material is much smaller than the strength of the metal member.
Therefore, it is difficult for the conventional vibration damping structure to exhibit a strength higher than that originally possessed by the metal member.
本発明は、このような問題を解決することを課題としており、制振構造体に制振性とともに強度を付与することができる制振材を提供し、ひいては強度と制振性とに優れた制振構造体を提供することを課題としている。 The present invention has an object to solve such a problem, and provides a vibration damping material capable of imparting strength to the vibration damping structure as well as vibration damping properties, and thus excellent in strength and vibration damping properties. It is an object to provide a damping structure.
上記課題を解決すべく、本発明は、金属製部材と、該金属製部材の振動を抑制する制振材とを有し、前記金属製部材の表面に前記制振材が取付られてなる制振構造体であって、前記制振材は、樹脂及び繊維を含む繊維強化樹脂層と、樹脂発泡体からなる発泡層とを含む２層以上の積層構造を有し、前記繊維強化樹脂層と前記金属製部材との間に前記発泡層が介装された状態となるように前記金属製部材に取付られている制振構造体を提供する。 In order to solve the above problems, the present invention includes a metal member and a vibration damping material that suppresses vibration of the metal member, and the vibration damping material is attached to the surface of the metal member. It is a vibration structure, and the vibration damping material has a laminated structure of two or more layers including a fiber reinforced resin layer containing a resin and a fiber and a foam layer made of a resin foam, and the fiber reinforced resin layer Provided is a damping structure that is attached to the metal member so that the foam layer is interposed between the metal member and the metal member.
本発明は、また、金属製部材の振動を抑制すべく該金属製部材の表面に取付られて用いられ、樹脂及び繊維を含む繊維強化樹脂層と、樹脂発泡体からなる発泡層とを含む２層以上の積層構造を有し、前記繊維強化樹脂層と前記金属製部材との間に前記発泡層が介装された状態となるように前記金属製部材に取付られて用いられる制振材を提供する。 The present invention is also used by being attached to the surface of the metal member to suppress vibration of the metal member, and includes a fiber reinforced resin layer containing a resin and a fiber, and a foam layer made of a resin foam. A damping material that has a laminated structure of layers or more and is attached to the metal member so that the foamed layer is interposed between the fiber reinforced resin layer and the metal member. provide.
本発明によれば、ゴムシートなどに比べて優れた強度を発揮させ易い繊維強化樹脂層を制振材が有することから制振構造体に制振性とともに優れた強度が発揮され得る。
即ち、本発明によれば、強度と制振性とに優れた制振構造体が提供され得る。
According to the present invention, since the vibration damping material has a fiber reinforced resin layer that easily exhibits excellent strength as compared with a rubber sheet or the like, the vibration damping structure can exhibit excellent strength as well as vibration damping properties.
That is, according to the present invention, a vibration damping structure excellent in strength and vibration damping properties can be provided.
本発明の実施の形態について、図を参照しつつ説明する。
なお、本実施形態においては、制振構造体が板状である場合を例にして本発明について説明する。
Embodiments of the present invention will be described with reference to the drawings.
In the present embodiment, the present invention will be described by taking as an example the case where the damping structure is plate-shaped.
図１は、本実施形態に係る板状の制振構造体を概略的に示したもので、図に示すように、本実施形態の制振構造体１は、板状の金属製部材１０（以下「金属板１０」ともいう）と、該金属板１０の振動を抑制するための板状の制振材２０（以下「制振板２０」ともいう）とを備えている。
本実施形態の前記制振構造体１は、金属板１０と制振板２０とが積層一体化された構造を有し、前記金属板１０の一方の表面にのみ制振板２０が取り付けられている。
FIG. 1 schematically shows a plate-like vibration damping structure according to the present embodiment. As shown in the figure, the vibration damping structure 1 of the present embodiment includes a plate-like metal member 10 ( (Hereinafter also referred to as “metal plate 10”) and a plate-shaped damping material 20 (hereinafter also referred to as “damping plate 20”) for suppressing vibration of the metal plate 10.
The damping structure 1 of the present embodiment has a structure in which a metal plate 10 and a damping plate 20 are laminated and integrated, and the damping plate 20 is attached only to one surface of the metal plate 10. Yes.
本実施形態における制振板２０は、図にも示されているように、金属製部材１０の表面に沿った形状を有する板状体である。
該制振板２０は、その厚み方向において異なる部材が積層された積層構造を有する。
本実施形態の制振板２０は、少なくとも樹脂発泡体からなる発泡層２１と、樹脂及び繊維を含む繊維強化樹脂層２２とを有し、２層以上の積層構造を有している。
該制振板２０は、前記繊維強化樹脂層２２と前記金属板１０との間に前記発泡層２１が介装された状態となるように前記金属板１０に取付られている。
The damping plate 20 in the present embodiment is a plate-like body having a shape along the surface of the metal member 10 as shown in the drawing.
The damping plate 20 has a laminated structure in which different members are laminated in the thickness direction.
The vibration damping plate 20 of the present embodiment has at least a foam layer 21 made of a resin foam and a fiber reinforced resin layer 22 containing resin and fibers, and has a laminated structure of two or more layers.
The damping plate 20 is attached to the metal plate 10 so that the foam layer 21 is interposed between the fiber reinforced resin layer 22 and the metal plate 10.
なお、本実施形態においては、前記制振板２０が、第１繊維強化樹脂層２２ａと第２繊維強化樹脂層２２ｂとの２層の繊維強化樹脂層を有している。
また、制振板２０は、この２層の繊維強化樹脂層２２ａ，２２ｂの間に前記発泡層２１が配されて３層構造を有している。
そして、当該制振構造体１は、２層の前記繊維強化樹脂層２２ａ，２２ｂの内の第１繊維強化樹脂層２２ａを前記金属板１０の表面に接着させて制振板２０が金属板１０に取付られている。
In the present embodiment, the vibration damping plate 20 has two fiber reinforced resin layers of a first fiber reinforced resin layer 22a and a second fiber reinforced resin layer 22b.
The damping plate 20 has a three-layer structure in which the foam layer 21 is disposed between the two fiber reinforced resin layers 22a and 22b.
And the said damping structure 1 adhere | attaches the 1st fiber reinforced resin layer 22a of the two said fiber reinforced resin layers 22a and 22b on the surface of the said metal plate 10, and the damping plate 20 is the metal plate 10 It is attached to.
即ち、本実施形態の制振板２０は、第２繊維強化樹脂層２２ｂと金属板１０との間に前記発泡層２１だけでなく前記第１繊維強化樹脂層２２ａを介装させた状態で前記金属板１０の表面に取付られている。 That is, the vibration damping plate 20 of the present embodiment includes the first fiber reinforced resin layer 22a as well as the foam layer 21 between the second fiber reinforced resin layer 22b and the metal plate 10. It is attached to the surface of the metal plate 10.
前記金属板１０は、特に限定されるものではなく、例えば、鉄、鉄基合金、アルミニウム、アルミニウム基合金、銅、銅基合金、チタン、チタン基合金等からなる厚み０．１ｍｍ〜１０ｍｍの板とすることができる。
前記金属板１０は、サンドブラスト等の物理的処理や陽極酸化等の化学的処理によって表面粗化処理が施されていてもよい。
前記金属板１０は、メッキ処理、セラミック溶射処理、ホウロウ引き、塗装などによって表面に被膜形成がされたものであってもよい。
The metal plate 10 is not particularly limited. For example, a plate having a thickness of 0.1 mm to 10 mm made of iron, iron-base alloy, aluminum, aluminum-base alloy, copper, copper-base alloy, titanium, titanium-base alloy, or the like. It can be.
The metal plate 10 may be subjected to surface roughening treatment by physical treatment such as sandblasting or chemical treatment such as anodization.
The metal plate 10 may have a film formed on the surface by plating, ceramic spraying, enameling, painting, or the like.
前記制振板２０は、特に限定されるものではないが、通常、前記発泡層２１の厚みが０．５ｍｍ〜１０ｍｍとされ、前記第１繊維強化樹脂層２２ａや前記第２繊維強化樹脂層２２の厚みが各々０．２ｍｍ〜５ｍｍとされる。
該制振板２０は、前記発泡層２１が、前記第１繊維強化樹脂層２２ａや前記第２繊維強化樹脂層２２ｂと協働して金属板１０の振動を抑制するのに特に有効に機能し、前記第１繊維強化樹脂層２２ａや前記第２繊維強化樹脂層２２ｂが、制振構造体１に優れた強度を付与するのに特に有効に機能する。
また、前記発泡層２１や前記繊維強化樹脂層２２ａ，２２ｂを有する本実施形態の制振板２０は、ゴムシートなどの従来の制振材に比べて軽量でありながら上記のような機能を有する。
Although the said damping plate 20 is not specifically limited, Usually, the thickness of the said foaming layer 21 shall be 0.5 mm-10 mm, and the said 1st fiber reinforced resin layer 22a and the said 2nd fiber reinforced resin layer 22 are used. The thickness of each is 0.2 mm to 5 mm.
The damping plate 20 functions particularly effectively for the foam layer 21 to suppress vibration of the metal plate 10 in cooperation with the first fiber reinforced resin layer 22a and the second fiber reinforced resin layer 22b. The first fiber reinforced resin layer 22a and the second fiber reinforced resin layer 22b function particularly effectively to impart excellent strength to the vibration damping structure 1.
Further, the vibration damping plate 20 of the present embodiment having the foam layer 21 and the fiber reinforced resin layers 22a and 22b has the above-described functions while being lighter than conventional vibration damping materials such as rubber sheets. .
前記発泡層２１は、例えば、発泡剤を含有させた発泡性樹脂ビーズを用いて型内成形した発泡成形体、樹脂を発泡剤とともに押出発泡させた発泡シートなどによって構成させることができる。
また、発泡層２１は、モノマーを発泡剤の存在下において型内で塊状重合して所定形状の重合体を得、これを加熱することによって発泡させた発泡成形体などとすることもできる。
The foamed layer 21 can be constituted by, for example, a foamed molded body molded in-mold using foamable resin beads containing a foaming agent, a foamed sheet obtained by extruding and foaming a resin together with a foaming agent, and the like.
The foamed layer 21 can also be a foamed molded product obtained by foaming a polymer in a predetermined shape by polymerizing a monomer in a mold in the presence of a foaming agent and heating the polymer.
前記発泡層２１は、ＪＩＳ Ｋ７２２２「発泡プラスチック及びゴム−見掛け密度の測定」に準拠して測定される見掛け密度が、０．０５〜１．０ｇ／ｃｍ３となるように形成されることが好ましい。
ただし、前記発泡層２１は、見掛け密度や材質が全体に均一化されている必要はなく、例えば、２枚の発泡シートを熱融着させた厚手の発泡シートや、異なる樹脂組成物を共押出発泡して発泡シートで形成させててもよく、その結果として材質や見掛け密度を厚み方向において変化させていてもよい。
The foamed layer 21 is preferably formed such that the apparent density measured in accordance with JIS K7222 “Foamed Plastics and Rubber—Measurement of Apparent Density” is 0.05 to 1.0 g / cm 3. .
However, the apparent density and material of the foam layer 21 do not need to be uniform throughout. For example, a thick foam sheet obtained by heat-sealing two foam sheets or a different resin composition is coextruded. Foaming may be performed with a foam sheet, and as a result, the material and the apparent density may be changed in the thickness direction.
前記発泡層２１の主成分とするのに好ましい樹脂としては、例えば、ポリエステル系樹脂、アクリル系樹脂、ポリカーボネート系樹脂、ポリメタクリルイミド系樹脂、ポリオレフィン系樹脂などの熱可塑性樹脂、フェノール系樹脂、エポキシ系樹脂、ビニルエステル系樹脂、不飽和ポリエステル系樹脂などの反応硬化性樹脂を主成分とするものが含むものが挙げられる。
ここで「主成分」とは、発泡層２１に最も高い質量割合で含まれる樹脂を意味する。
Preferred resins for the main component of the foam layer 21 include, for example, thermoplastic resins such as polyester resins, acrylic resins, polycarbonate resins, polymethacrylimide resins, and polyolefin resins, phenol resins, and epoxy resins. Examples thereof include those containing, as a main component, a reaction curable resin such as a vinyl resin, a vinyl ester resin, and an unsaturated polyester resin.
Here, the “main component” means a resin contained in the foamed layer 21 at the highest mass ratio.
該制振板２０における前記第１繊維強化樹脂層２２ａや前記第２繊維強化樹脂層２２ｂは、繊維織物や不織布などの基材シートに樹脂を含浸担持させた繊維強化樹脂シートや、樹脂と短繊維との混和物がシート化された繊維強化樹脂シートなど、樹脂と繊維とを含むシート状の部材によって形成させることができる。 The first fiber reinforced resin layer 22a and the second fiber reinforced resin layer 22b in the damping plate 20 are a fiber reinforced resin sheet obtained by impregnating and supporting a base material sheet such as a fiber woven fabric or a nonwoven fabric, It can be formed by a sheet-like member containing resin and fibers, such as a fiber reinforced resin sheet in which a mixture with fibers is formed into a sheet.
繊維強化樹脂シートの基材シートを構成する繊維や短繊維は、例えば、ステンレス繊維やスチール繊維などの金属繊維、ガラス繊維、炭素繊維、ボロン繊維、炭化ケイ素繊維、アルミナ繊維、チラノ繊維、玄武岩繊維やその他のセラミックス繊維といった無機繊維；アラミド繊維、ポリエチレン繊維、ポリパラフェニレンベンズオキサドール（ＰＢＯ）繊維などの有機繊維；などが挙げられる。
なかでも繊維強化樹脂シートを構成する繊維は、優れた機械的強度及び耐熱性を有していることから、炭素繊維、ガラス繊維、アラミド繊維が好ましく、しなやかさと優れた強度とを併せ持つことから炭素繊維がより好ましい。
The fibers and short fibers constituting the base sheet of the fiber reinforced resin sheet are, for example, metal fibers such as stainless fibers and steel fibers, glass fibers, carbon fibers, boron fibers, silicon carbide fibers, alumina fibers, Tyranno fibers, and basalt fibers. And other inorganic fibers such as ceramic fibers; organic fibers such as aramid fibers, polyethylene fibers, and polyparaphenylene benzoxador (PBO) fibers;
Among them, the fiber constituting the fiber-reinforced resin sheet is preferably carbon fiber, glass fiber, or aramid fiber because it has excellent mechanical strength and heat resistance, and carbon because it has both flexibility and excellent strength. Fiber is more preferred.
前記基材シートとしては、例えば、前記繊維の複数を引き揃えた引き揃え糸や撚糸を平織、綾織、又は朱子織した面材を採用することができる。
また、基材シートとしては、繊維を一方向に引き揃えてなるカーボンＵＤなども採用可能である。
As the base material sheet, for example, a face material obtained by plain weaving, twill weaving, or satin weaving of aligned yarns or twisted yarns obtained by arranging a plurality of the fibers can be employed.
Moreover, as the base sheet, carbon UD formed by aligning fibers in one direction can be used.
前記基材シートは、一枚の面材のみで構成させても良く、複数の面材を積層して構成させても良い。
また、前記の第１、第２繊維強化樹脂層２２ａ，２２ｂについても、１枚の繊維強化樹脂シートのみで構成させる必要はなく、複数枚の繊維強化樹脂シートで繊維強化樹脂層を形成させることも可能である。
The base sheet may be composed of only one face material, or a plurality of face materials may be laminated.
Further, the first and second fiber reinforced resin layers 22a and 22b do not need to be composed of only one fiber reinforced resin sheet, and a fiber reinforced resin layer is formed of a plurality of fiber reinforced resin sheets. Is also possible.
なお、前記の第１、第２繊維強化樹脂層２２ａ，２２ｂを前記の混和物シートにて形成させる場合、短繊維については、通常、上記例示の繊維で、太さが３μｍ以上２０μｍ以下、長さが３ｍｍ以上５０ｍｍ以下のものを採用することができる。 When the first and second fiber reinforced resin layers 22a and 22b are formed of the mixture sheet, the short fibers are usually the above-exemplified fibers and have a thickness of 3 μm to 20 μm and long. The length of 3 mm or more and 50 mm or less can be adopted.
前記基材シートや前記短繊維とともに繊維強化樹脂シートの形成に利用される樹脂は、特に限定されず一般的な熱可塑性樹脂や反応硬化性樹脂が挙げられる。
前記熱可塑性樹脂としては、特に限定されず、オレフィン系樹脂、ポリエステル系樹脂、ポリアミド系樹脂、熱可塑性ポリウレタン樹脂、サルファイド系樹脂、アクリル系樹脂などが挙げられる。
なお、熱可塑性樹脂は、単独で用いられても二種以上が併用されてもよい。
前記繊維強化樹脂シートを構成する樹脂は、発泡シートとの接着性を考慮すると熱可塑性樹脂の中ではポリエステル樹脂が好ましい。
Resin utilized for formation of a fiber reinforced resin sheet with the said base material sheet and the said short fiber is not specifically limited, A general thermoplastic resin and reaction curable resin are mentioned.
The thermoplastic resin is not particularly limited, and examples thereof include olefin resins, polyester resins, polyamide resins, thermoplastic polyurethane resins, sulfide resins, and acrylic resins.
In addition, a thermoplastic resin may be used independently or 2 or more types may be used together.
The resin constituting the fiber reinforced resin sheet is preferably a polyester resin among thermoplastic resins in consideration of adhesiveness with the foamed sheet.
繊維強化樹脂シートを構成する前記反応硬化性樹脂としては、特に限定されず、例えば、エポキシ樹脂、不飽和ポリエステル樹脂、フェノール樹脂、メラミン樹脂、ポリウレタン樹脂、シリコン樹脂、マレイミド樹脂、ビニルエステル樹脂、シアン酸エステル樹脂、マレイミド樹脂とシアン酸エステル樹脂を予備重合した樹脂などが挙げられる。
これらの中で繊維強化樹脂シートを構成するのに好ましい樹脂としては、繊維強化樹脂層２２に優れた耐熱性や耐薬品性、高い弾性率を発揮させるのに有利なことから、エポキシ樹脂、ビニルエステル樹脂が好ましい。
なお、反応硬化性樹脂は、単独で用いられても二種以上が併用されてもよい。
また、第１、第２繊維強化樹脂層２２ａ，２２ｂにおける樹脂の含有量は、２０〜８０質量％であることが好ましく、３０〜６０質量％であることがより好ましい。
The reaction curable resin constituting the fiber reinforced resin sheet is not particularly limited. For example, epoxy resin, unsaturated polyester resin, phenol resin, melamine resin, polyurethane resin, silicon resin, maleimide resin, vinyl ester resin, cyanide. Examples include acid ester resins, resins obtained by prepolymerizing maleimide resins and cyanate ester resins.
Among these resins, preferred resins for constituting the fiber reinforced resin sheet are advantageous in that the fiber reinforced resin layer 22 is excellent in exhibiting excellent heat resistance, chemical resistance, and high elastic modulus. Ester resins are preferred.
In addition, reaction curable resin may be used independently or 2 or more types may be used together.
Moreover, it is preferable that it is 20-80 mass%, and, as for content of resin in the 1st, 2nd fiber reinforced resin layers 22a and 22b, it is more preferable that it is 30-60 mass%.
なお、本実施形態における前記第１繊維強化樹脂層２２ａと第２繊維強化樹脂層２２ｂとは、繊維や樹脂の種類、それぞれの厚みや樹脂含有量などを全て共通させている必要はなく、これらの一部又は全部が異なっていても良い。 In the present embodiment, the first fiber reinforced resin layer 22a and the second fiber reinforced resin layer 22b do not need to share all kinds of fibers and resins, their thicknesses, resin contents, and the like. A part or all of may be different.
本実施形態の制振板２０は、前記第１繊維強化樹脂層２２ａを前記金属板１０の表面に接着させて制振板２０が前記金属板１０に取付られている。
第１繊維強化樹脂層２２ａは、例えば、当該第１繊維強化樹脂層２２ａや金属板１０の材質などに応じて適宜選択される接着剤を介して前記金属板１０に接着させ得る。
また、制振板２０は、ネジやリベットといった係止部材を用いて金属板１０に取付られてもよい。
さらには、第１繊維強化樹脂層２２ａに含まれている樹脂の接着性を利用して、接着剤などを用いずに直接的に金属板１０に取付られてもよい。
In the vibration damping plate 20 of the present embodiment, the vibration damping plate 20 is attached to the metal plate 10 by bonding the first fiber reinforced resin layer 22 a to the surface of the metal plate 10.
For example, the first fiber reinforced resin layer 22a can be bonded to the metal plate 10 via an adhesive that is appropriately selected according to the first fiber reinforced resin layer 22a, the material of the metal plate 10, and the like.
Further, the damping plate 20 may be attached to the metal plate 10 using a locking member such as a screw or a rivet.
Furthermore, the adhesiveness of the resin contained in the first fiber reinforced resin layer 22a may be used to directly attach the metal plate 10 without using an adhesive or the like.
なお、制振板２０と金属板１０とを接着する接着剤としては、シアノアクリレートなどの嫌気性接着剤、二液反応型接着剤、光硬化型接着剤などの反応硬化型接着剤、ホットメルト接着剤、粘着剤などとも呼ばれる感圧接着剤などが挙げられる。
該接着剤としては、例えば、エポキシ系接着剤、ウレタン系接着剤、アクリル系接着剤、シリコーン系接着剤、ゴム系接着剤などが挙げられる。
As an adhesive for bonding the vibration damping plate 20 and the metal plate 10, an anaerobic adhesive such as cyanoacrylate, a two-component reactive adhesive, a reactive curable adhesive such as a photocurable adhesive, a hot melt Examples include pressure-sensitive adhesives called adhesives and pressure-sensitive adhesives.
Examples of the adhesive include epoxy adhesives, urethane adhesives, acrylic adhesives, silicone adhesives, rubber adhesives, and the like.
なお、前記金属板１０は、必ずしも平板状である必要はなく、曲板状であってもよく、リブ加工や波付け加工が施されたものであってもよい。
本実施形態の制振板２０は、樹脂製であるので、仮に金属板が表面に凹凸などの立体的な構造が備えられたものであっても、当該表面に追従する形状への加工が容易である。
即ち、本実施形態の制振板２０は、例えば、一旦、発泡層２１と繊維強化樹脂層２２とが積層一体化された平坦シートとされた後で、表面が立体的形状を有する金属製部材に対してオートクレーブ方式などによる熱プレスが施されて金属製部材の表面形状に追従する状態に賦形されるとともに該金属製部材に接着一体化されてもよい。
In addition, the said metal plate 10 does not necessarily need to be flat plate shape, and may be curved plate shape, and the thing which rib processing and corrugation processing were performed may be performed.
Since the vibration damping plate 20 of the present embodiment is made of resin, even if the metal plate is provided with a three-dimensional structure such as unevenness on the surface, it can be easily processed into a shape that follows the surface. It is.
That is, the damping plate 20 of the present embodiment is, for example, a metal member whose surface has a three-dimensional shape after being once formed into a flat sheet in which the foam layer 21 and the fiber reinforced resin layer 22 are laminated and integrated. On the other hand, it may be heat-pressed by an autoclave method or the like to be shaped so as to follow the surface shape of the metal member, and may be bonded and integrated with the metal member.
金属板１０に接着される第１繊維強化樹脂層２２ａは、当該制振板２０が接着剤等を用いずに直接金属板１０に積層されるような場合において、当該金属板１０の表面への追従性を良好にすることが好ましい。
従って、金属板１０の表面が十分にフラットなものではなく、凹凸等があるようであれば、第１繊維強化樹脂層２２ａは、金属板表面への追従性を考慮して、第２繊維強化樹脂層２２ｂよりも薄手のものや樹脂含有量の多いもの、或いは、樹脂と短繊維との混和物がシート化された繊維強化樹脂シートなどとすることができる。
The first fiber reinforced resin layer 22a bonded to the metal plate 10 is formed on the surface of the metal plate 10 when the vibration damping plate 20 is directly laminated on the metal plate 10 without using an adhesive or the like. It is preferable to improve the followability.
Therefore, if the surface of the metal plate 10 is not sufficiently flat and has irregularities or the like, the first fiber reinforced resin layer 22a takes into account the followability to the surface of the metal plate and the second fiber reinforced It can be made thinner than the resin layer 22b, one having a higher resin content, or a fiber-reinforced resin sheet in which a mixture of resin and short fibers is formed into a sheet.
なお、本実施形態の制振構造体１は、、図２に例示するように、制振板２０が発泡層２１を金属板１０に接着させて金属板１０に取付られてもよい。 In the vibration damping structure 1 of this embodiment, the vibration damping plate 20 may be attached to the metal plate 10 with the foam layer 21 bonded to the metal plate 10 as illustrated in FIG.
この図２に例示の制振構造体１は、前記制振板２０が、単一の繊維強化樹脂層２２と発泡層２１との２層構造を有している。
そして、図２に例示の制振構造体１は、発泡層２１を前記金属板１０の表面に接着させて制振板２０が金属板１０に取付られている。
該制振板２０は、発泡層２１と金属板１０との接着に、発泡層自身による熱融着、接着剤、ネジ、リベットなどを利用し得る点において、図１に例示した態様と同じである。
In the damping structure 1 illustrated in FIG. 2, the damping plate 20 has a two-layer structure of a single fiber-reinforced resin layer 22 and a foamed layer 21.
In the vibration damping structure 1 illustrated in FIG. 2, the vibration damping plate 20 is attached to the metal plate 10 with the foam layer 21 adhered to the surface of the metal plate 10.
The damping plate 20 is the same as the embodiment illustrated in FIG. 1 in that heat bonding, adhesive, screws, rivets, etc. by the foam layer itself can be used for bonding the foam layer 21 and the metal plate 10. is there.
また、本実施形態においては、上記例示の態様に限らず、例えば、発泡層／繊維強化樹脂層／発泡層／繊維強化樹脂層の４層構造を有する制振板や、繊維強化樹脂層／発泡層／繊維強化樹脂層／発泡層／繊維強化樹脂層の５層構造を有する制振板、並びに、繊維を含まない非発泡樹脂層などといった繊維強化樹脂層や発泡層以外の層を有する３層以上の積層構造を備えた制振板を制振構造体の構成部材として採用可能である。 Moreover, in this embodiment, it is not restricted to the said illustration aspect, For example, the damping board which has 4 layer structure of a foam layer / fiber reinforced resin layer / foam layer / fiber reinforced resin layer, fiber reinforced resin layer / foam Damping plate having a five-layer structure of layer / fiber reinforced resin layer / foamed layer / fiber reinforced resin layer, and three layers having layers other than the fiber reinforced resin layer and the foamed layer, such as a non-foamed resin layer containing no fiber The damping plate having the above laminated structure can be adopted as a constituent member of the damping structure.
また、本実施形態においては、制振効果を発揮させる金属製部材として金属板を例示しているが、本発明においては、金属製部材がロッド状のものやパイプ状であっても同様に効果が発揮されるものであり、このような場合も本発明の制振構造体として意図する範囲のものである。
また、このような金属製部材についての変形例のみならず、本発明は上記例示のものに各種変更を加え得るものである。
Further, in the present embodiment, a metal plate is exemplified as a metal member that exhibits a vibration damping effect. However, in the present invention, even if the metal member has a rod shape or a pipe shape, the same effect is obtained. Such a case is also within the range intended as the vibration damping structure of the present invention.
Moreover, not only the modification about such a metal member but this invention can add various changes to the said illustration.
以下に実施例を示して、本発明をさらに詳細に説明するが、本発明はこれらの例示に限定されるものでもない。
（制振性評価：１）
炭素繊維が綾織されてなる基材シートに樹脂含浸された繊維強化樹脂シート（三菱レイヨン社製 商品名「パイロフィルＴＲ３９１ＧＭＰ」、目付：２００ｇ／ｍ２、厚み：０．２３ｍｍ）を８枚用意した。
これらの繊維強化樹脂シートを各４枚に分け、それぞれを経糸の長さ方向が順次、４５°、−４５°、０°、９０°となるように重ね合わせて２組の積層繊維強化樹脂シートを用意した。
なお、４枚の繊維強化樹脂シートが全て重なり合っている部分から縦３００ｍｍ×横４００ｍｍの平面長方形状にシート体を切り出した。
押出発泡によって作製された厚み０．８ｍｍ（密度：０．５０ｇ／ｃｍ３）のポリエステル樹脂発泡シートを、２枚の前記シート体で挟み込んでシート積層体を作製した。
なお、２枚のシート体は、強化繊維基材の経糸の長さ方向が９０°となっている強化繊維基材が最も外側となり且つ最も外側の強化繊維基材の経糸の長さ方向が互いに直交した状態となるように発泡シートの両面に積層した。
上記シート積層体を３７ｔプレス機にて１４０℃で５分間０．５ＭＰａにて加熱プレスを行った。
繊維強化樹脂シートに含浸担持されていた樹脂を硬化させた後に６０℃まで冷却を行い、圧力を開放した後に繊維強化複合体（制振板）（仕上がり厚み：１．８ｍｍ）を取り出した。
The present invention will be described in more detail with reference to the following examples, but the present invention is not limited to these examples.
(Vibration evaluation: 1)
Eight fiber reinforced resin sheets (trade name “Pyrofil TR391GMP”, manufactured by Mitsubishi Rayon Co., Ltd., basis weight: 200 g / m 2 , thickness: 0.23 mm) impregnated with a base material sheet in which carbon fibers are twilled were prepared.
Each of these fiber reinforced resin sheets is divided into four sheets, and each of them is overlapped so that the length direction of the warp is 45 °, −45 °, 0 °, 90 °, and two sets of laminated fiber reinforced resin sheets. Prepared.
In addition, the sheet | seat body was cut out in the plane rectangular shape of length 300mm x width 400mm from the part which all the four fiber reinforced resin sheets overlapped.
A polyester resin foam sheet having a thickness of 0.8 mm (density: 0.50 g / cm 3 ) produced by extrusion foaming was sandwiched between the two sheet bodies to produce a sheet laminate.
In the two sheet bodies, the reinforcing fiber base is 90 ° in the length direction of the warp of the reinforcing fiber base, and the length direction of the warp of the outermost reinforcing fiber base is mutually the same. It laminated | stacked on both surfaces of the foam sheet so that it might be in the orthogonal state.
The sheet laminate was heated and pressed at 0.5 MPa for 5 minutes at 140 ° C. with a 37 t press.
After the resin impregnated and supported on the fiber reinforced resin sheet was cured, the resin was cooled to 60 ° C., and after releasing the pressure, a fiber reinforced composite (damping plate) (finished thickness: 1.8 mm) was taken out.
前記繊維強化複合体から０°方向を長さ方向として、幅１０ｍｍ、長さ２３０ｍｍ、厚み１．８ｍｍの試験片を切り出した。
その後、幅１０ｍｍ、長さ２５０ｍｍ、厚み１．２ｍｍのアルミニウム板（Ａ６０６３）に接着剤を用いて前記試験片を貼り付けテストピースを作製した。
なお、アルミニウム板と試験片とは、長さ方向一端側を揃え、他端側においてアルミニウム板に２０ｍｍの余長が生じる形で貼り合わせた。
このテストピースの他端側（制振材のないアルミニウム板単独の余長部分）を万力で固定し、片持ち梁状に配置した。
片持ち梁状の先端に加速度ピックアップを両面テープで接着するとともに、インパクト加振用ハンマーで梁の支持部付近を叩き試験片に加振した。
ハンマーの衝撃電気信号と、加速度ピックアップの電気信号は、アンプを介してＦＦＴアナライザ（（株）小野測器製マルチパーパスＦＦＴアナライザ ＣＦ−５２１０）にて解析した。
A test piece having a width of 10 mm, a length of 230 mm, and a thickness of 1.8 mm was cut out from the fiber-reinforced composite with the 0 ° direction as the length direction.
Then, the said test piece was affixed on the aluminum plate (A6063) of width 10mm, length 250mm, and thickness 1.2mm using the adhesive agent, and the test piece was produced.
The aluminum plate and the test piece were bonded together in such a way that one end in the length direction was aligned and an extra length of 20 mm was generated on the aluminum plate at the other end.
The other end of this test piece (the extra length of the aluminum plate alone without damping material) was fixed with a vise and arranged in a cantilever shape.
The accelerometer was bonded to the tip of the cantilever with double-sided tape, and the vicinity of the support of the beam was hit with an impact vibration hammer to vibrate the test piece.
The impact electric signal of the hammer and the electrical signal of the acceleration pickup were analyzed with an FFT analyzer (Multipurpose FFT analyzer CF-5210 manufactured by Ono Sokki Co., Ltd.) via an amplifier.
なお、繊維強化樹脂シートを発泡層の両面に各４枚積層するのに代えて、各３枚積層した制振板、及び、各２枚積層した制振板を用いて上記と同様のテストピースを作製し上記と同様に振動の解析を行った。
このときの振動減衰曲線は図３のようになった。
なお、図３は縦軸が振動振幅、横軸が時間であり、（ａ）がアルミニウム板のみの結果で、（ｂ）〜（ｄ）がアルミニウム板に制振板である繊維強化複合体を取り付けた場合の結果である。
そして、図からもわかるように（ｂ）〜（ｄ）の方が（ａ）よりも短時間に振動振幅が０近似となり制振性に優れていた。
In addition, instead of laminating four fiber reinforced resin sheets on both sides of the foamed layer, a test piece similar to the above using a damping plate in which three of each were laminated and a damping plate in which two of each were laminated The vibration was analyzed in the same manner as described above.
The vibration attenuation curve at this time is as shown in FIG.
In FIG. 3, the vertical axis represents vibration amplitude, the horizontal axis represents time, (a) shows the result of only the aluminum plate, and (b) to (d) show the fiber reinforced composite having the vibration damping plate on the aluminum plate. It is the result when attached.
As can be seen from the figure, in (b) to (d), the vibration amplitude was 0 approximation in a shorter time than in (a), and the vibration damping property was excellent.
（制振性評価２）
以下の３種類のテストピースについて、先の「制振性評価1」と同様に、他端側（アルミニウム板のみの余長部分）を万力で固定した加振テスト［図４（１ａ）〜（３ａ）］を実施するとともに、これとは逆の一端側（アルミニウム板と制振材とが積層されている側を）万力で固定した加振テスト［図４（１ｂ）〜（３ｂ）］を実施した。
（１ａ、１ｂ）
図３（ａ）と同様にアルミニウム板のみ
（２ａ、２ｂ）
繊維強化樹脂シートのみを１０層積層したものを制振材としてアルミニウム板の片面に積層したもので、アルミニウム板単体のものと同様に比較例である
（３ａ，３ｂ）
Al/CFRP(4層)/発泡層/ CFRP(4層)〕のテストヒ゜ース。
但し、制振材は、発泡シートが２．３ｍｍ厚み(密度：０．２９g／ｃｍ３)のもので、ＣＦＲＰがカーボンＵＤを基材とするものを用いた（制振材の総厚み：４．０ｍｍ）。
(Vibration control evaluation 2)
For the following three types of test pieces, the vibration test with the other end (the surplus portion of the aluminum plate only) fixed in a vise as in the previous “damping evaluation 1” [FIG. 4 (1a) to (3a)] and a vibration test in which one end side (the side on which the aluminum plate and the damping material are laminated) is fixed with a vise [FIG. 4 (1b) to (3b)] ] Was carried out.
(1a, 1b)
Similar to Fig. 3 (a), only aluminum plate
(2a, 2b)
A laminate of 10 layers of fiber reinforced resin sheets is laminated on one side of an aluminum plate as a damping material, and is a comparative example similar to that of a single aluminum plate
(3a, 3b)
Al / CFRP (4 layers) / foamed layer / CFRP (4 layers)] test head.
However, as the damping material, a foamed sheet having a thickness of 2.3 mm (density: 0.29 g / cm 3 ) and a CFRP based on carbon UD (total thickness of damping material: 4) was used. 0.0 mm).
結果を、図４に示す
この図からも、発泡層と繊維強化樹脂層とを備える制振材は、繊維強化樹脂層のみしか備えていない制振材に比べて制振性に優れていることがわかる。
なお、前記制振板は、軽量性と強度とに優れたものであるため、本発明の制振構造体は、制振性に優れているのみならず軽量性と強度とにも優れているといえる。
The results are shown in FIG. 4. Also from this figure, the damping material provided with the foam layer and the fiber reinforced resin layer is superior in the damping property compared with the damping material provided with only the fiber reinforced resin layer. I understand.
In addition, since the said damping plate is excellent in lightweight property and intensity | strength, the damping structure of this invention is excellent not only in damping property but lightweight and intensity | strength. It can be said.
１：制振構造体
１０：金属製部材
２０：制振材
２１：発泡層
２２：繊維強化樹脂層
1: Damping structure 10: Metal member 20: Damping material 21: Foam layer 22: Fiber reinforced resin layer
Claims (4)
前記制振材は、樹脂及び繊維を含む繊維強化樹脂層と、樹脂発泡体からなる発泡層とを含む２層以上の積層構造を有し、前記繊維強化樹脂層と前記金属製部材との間に前記発泡層が介装された状態となるように前記金属製部材に取付られている制振構造体。 A damping structure having a metal member and a damping material for suppressing vibration of the metal member, wherein the damping material is attached to a surface of the metal member,
The vibration damping material has a laminated structure of two or more layers including a fiber reinforced resin layer containing a resin and a fiber and a foamed layer made of a resin foam, and between the fiber reinforced resin layer and the metal member. A vibration damping structure attached to the metal member such that the foam layer is interposed in the metal member.
樹脂及び繊維を含む繊維強化樹脂層と、樹脂発泡体からなる発泡層とを含む２層以上の積層構造を有し、前記繊維強化樹脂層と前記金属製部材との間に前記発泡層が介装された状態となるように前記金属製部材に取付られて用いられる制振材。 Used to be attached to the surface of the metal member to suppress vibration of the metal member,
It has a laminated structure of two or more layers including a fiber reinforced resin layer containing resin and fibers and a foamed layer made of a resin foam, and the foamed layer is interposed between the fiber reinforced resin layer and the metal member. A damping material used by being attached to the metal member so as to be mounted.
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| JP2018187830A (en) * | 2017-05-02 | 2018-11-29 | 株式会社イノアックコーポレーション | Damping material |
| CN114867949A (en) * | 2020-01-10 | 2022-08-05 | 日东电工株式会社 | Reinforced vibration damping material and reinforced vibration damping structure |
| KR20220140839A (en) | 2020-06-02 | 2022-10-18 | 아사히 가세이 가부시키가이샤 | Composite Material Laminate |
| JP7496754B2 (en) | 2020-10-05 | 2024-06-07 | 倉敷紡績株式会社 | Light metal composite material and method of use thereof |
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