JP2883967B2 - Self-fusing damping material - Google Patents
Self-fusing damping materialInfo
- Publication number
- JP2883967B2 JP2883967B2 JP9368292A JP9368292A JP2883967B2 JP 2883967 B2 JP2883967 B2 JP 2883967B2 JP 9368292 A JP9368292 A JP 9368292A JP 9368292 A JP9368292 A JP 9368292A JP 2883967 B2 JP2883967 B2 JP 2883967B2
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- weight
- parts
- binder
- vibration damping
- self
- Prior art date
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- Compositions Of Macromolecular Compounds (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、自己融着性が優れてお
り、しかも、制振効果が高い自己融着式制振材に関する
ものである。その主な用途は、車両・船舶用、電器・機
械器具用及び建築・建材用材料等である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-fusing type vibration damping material having excellent self-fusing properties and a high damping effect. Its main uses are as materials for vehicles and ships, for electric appliances and machinery, and for construction and building materials.
【０００２】[0002]
【従来の技術】周知の如く、制振材は、自動車、電車等
の車両や船舶、洗濯機、乾燥機、音響機器、精密工作機
械、工場プラント機器等の電気・機械器具に組み込まれ
ているエンジンやモーター等の回転に起因して発生する
振動や騒音、ビルディング、家屋等の水道・ガス等の導
管類や空調用ダクト等により発生する振動や騒音並びに
車両が路面や線路を走行する時に発生する振動等を防止
・抑制することを目的として各種分野で広く使用されて
いる。2. Description of the Related Art As is well known, damping materials are incorporated in electric and mechanical instruments such as vehicles such as automobiles and trains, ships, washing machines, dryers, audio equipment, precision machine tools and factory plant equipment. Vibration and noise generated by rotation of engines and motors, vibration and noise generated by pipes such as water and gas in buildings and houses, and ducts for air conditioning, as well as when vehicles travel on roads and tracks. It is widely used in various fields for the purpose of preventing and suppressing vibration and the like.
【０００３】制振材は、一般に、雲母粉体等の充填材料
を結合材料を用いて押出成形、カレンダー成形、圧縮成
形、射出成形、注型成形等の成形法によりシート状又は
ブロック状等に成形することにより製造される。中でも
シート状の制振材を鋼板等の基材に加熱融着又は貼付し
て使用されるケースが多い。[0003] In general, a vibration damping material is formed into a sheet shape or a block shape by a molding method such as extrusion molding, calender molding, compression molding, injection molding, casting molding or the like using a binder material as a filler material such as mica powder. It is manufactured by molding. Above all, in many cases, a sheet-shaped vibration damping material is used by being heat-sealed or attached to a base material such as a steel plate.
【０００４】近年、上記車両・船舶、電気・機械器具及
び建築・建材等は益々軽量化又は小型化の傾向にあり、
それに伴って材料として用いられる制振材も、軽量化、
薄型化、小型化が益々必要となっており、その為には高
い制振効果を有することが強く要求されている。[0004] In recent years, the above-mentioned vehicles / ships, electric / mechanical appliances, and construction / building materials have tended to become lighter or smaller.
Along with this, the vibration damping material used as a material has also been reduced in weight,
Thinning and miniaturization are increasingly required, and for that purpose, it is strongly required to have a high damping effect.
【０００５】また、制振材を基材に装着するに際しては
取扱いや装着が容易である等の施工性や作業性が優れて
いることが必要であるが、その為には、基材との密着性
が優れている、換言すれば、制振材が基材に強く密着す
る、所謂、密着強度と基材の凹凸面や複雑形状に十分密
着順応する、所謂、密着追従性が優れていることが強く
要求されている。Further, when the vibration damping material is mounted on the base material, it is necessary to have excellent workability and workability such as easy handling and mounting. The adhesiveness is excellent, in other words, the damping material adheres strongly to the substrate, so-called, the so-called adhesive strength and the conformity to the uneven surface or the complex shape of the substrate are sufficiently adjusted, so-called, the adherence follow-up property is excellent. Is strongly required.
【０００６】しかしながら、被装着物である天井部分や
垂直部分に制振材を装着する場合、一般に、接着剤や両
面テープ等を使用する方法やホットメルトを装着面に加
工し、加熱融着する方法等がとられているが、前者の方
法による場合には、装着時に粘着面に貼付されている離
型紙を剥離する必要がある為取扱いが不便であり、後者
の方法による場合には制振材の垂れ下がりや脱落を常に
配慮しながら加熱融着をしなければならず、施工性や作
業性が低下する大きな原因となっていた。However, when a vibration damping material is mounted on a ceiling portion or a vertical portion as an object to be mounted, generally, a method using an adhesive or a double-sided tape, or a hot melt is processed on the mounting surface, and heat fusion is performed. Although the former method is used, it is inconvenient to use the former method because it is necessary to peel off the release paper attached to the adhesive surface at the time of mounting, and handling is inconvenient. Heat fusion must be performed while always taking into account sagging and falling off of the material, which has been a major cause of deterioration in workability and workability.
【０００７】そこで、ハードフェライト粒子粉末を充填
材料とし、該充填材料を結合材料を用いて成形した制振
材を着磁し、磁力による吸着力を持たせ、この磁力によ
る吸着力を利用して制振材を所定位置に位置のずれや垂
れ下がりがないようにあらかじめ設置し、その後、加熱
融着を行う方法（以下、自己融着式制振材という。）が
提案され、実用化されている。Therefore, a hard ferrite particle powder is used as a filler material, and a vibration damping material formed by molding the filler material with a binder material is magnetized to have a magnetic attraction, and the magnetic attraction is used. A method has been proposed in which a vibration damping material is previously installed at a predetermined position so as not to be displaced or sagged, and then subjected to heat fusion (hereinafter, referred to as a self-fusion type vibration damping material), and has been put into practical use. .
【０００８】この自己融着式制振材は、位置のずれや垂
れ下がりをできるだけ抑制、防止する為、磁気吸着力を
有していることが必要である。そして、前述した密着強
度や密着追従性等の密着性とともに、加熱融着に際して
熱融着性が優れていることも要求される。The self-fusing type vibration damping material needs to have a magnetic attraction force in order to suppress or prevent displacement and sagging as much as possible. In addition to the above-mentioned adhesion such as adhesion strength and adhesion followability, it is also required that the heat fusion property be excellent in heat fusion.
【０００９】従来、自己融着式制振材としては、バリウ
ムフェライト粒子粉末やストロンチウムフェライト粒子
粉末等の大きな残留磁気を有する磁性材料を溶融できる
瀝青材料を用いて成形してなる制振材（特公昭４２−９
８８０号公報）や残留磁気を有する磁性材料および製紙
廃液中の固形物の焼成により得られる粉末を、瀝青材お
よび／又は合成ゴムおよび／または合成樹脂を用いて成
形してなる制振材（特開昭５１−９０３２３号公報）等
が知られている。Conventionally, as a self-bonding type vibration damping material, a vibration damping material formed by using a bituminous material capable of melting a magnetic material having a large remanence, such as barium ferrite particle powder or strontium ferrite particle powder, has been used. Kuniaki 42-9
No. 880) or a magnetic material having residual magnetism and a powder obtained by baking a solid in a papermaking waste liquid, using a bituminous material and / or a synthetic rubber and / or a synthetic resin to form a vibration damping material (particularly, JP-A-51-90323) is known.
【００１０】[0010]
【発明が解決しようとする課題】自己融着性に優れ、し
かも、制振効果が高い自己融着式制振材は現在最も要求
されているところであるが、前述特公昭４２−９８８０
号公報及び特開昭５１−９０３２３号公報に記載の制振
材は、後出比較例に示す通り、これら諸特性を十分満た
すものとは言い難いものである。即ち、後出比較例に示
す通り、制振効果は、損失係数ηで高々０．１２程度と
不十分である。The self-welding type vibration damping material which is excellent in self-fusing property and has a high vibration damping effect is most demanded at present.
The vibration damping materials described in Japanese Patent Application Laid-Open Publication No. Hei. 51-90323 and Japanese Patent Application Laid-Open No. S51-90323 are not sufficient to satisfy these characteristics as shown in Comparative Examples below. That is, as shown in the later-described comparative example, the vibration damping effect is insufficient at a loss coefficient η of about 0.12 at most.
【００１１】そこで、本発明は、自己融着性に優れてお
り、しかも、制振効果が高い制振材を提供することを技
術的課題とする。Accordingly, it is a technical object of the present invention to provide a vibration damping material which has excellent self-fusing properties and a high vibration damping effect.
【００１２】[0012]
【課題を解決する為の手段】前記技術的課題は、次の通
りの本発明によって達成できる。即ち、本発明は、ハー
ドフェライト粒子粉末を充填材料とし該充填材料を結合
材料を用いて成形してなる自己融着式制振材において、
前記結合材料としてエチレン酢酸ビニル共重合体と石油
樹脂とを用いるとともに当該両結合材料の合計量が１０
０重量部に対して前記充填材料の量が１５０〜６００重
量部となるように前記充填材料と前記両結合材料とを混
合配合することからなる自己融着式制振材及びハードフ
ェライト粒子粉末及び補助充填材を配合してなる充填材
料を結合材料を用いて成形してなる自己融着式制振材に
おいて、前記結合材料としてエチレン酢酸ビニル共重合
体と石油樹脂とを用いるとともに当該両結合材料の合計
量１００重量部に対して前記ハードフェライト粒子粉末
の量が５０重量部を越え、４００重量部以下であって、
前記補助充填材の量が１〜２００重量部の範囲内であ
り、且つ、当該両充填材料の合計量が前記結合材料１０
０重量部に対して１００〜６００重量部の範囲となるよ
うに、前記充填材料と前記両結合材料とを混合配合する
ことからなる自己融着式制振材である。The above technical object can be achieved by the present invention as described below. That is, the present invention provides a self-welding type vibration damping material obtained by molding hard ferrite particle powder as a filler material and molding the filler material using a binder material.
Ethylene vinyl acetate copolymer and petroleum resin are used as the binder, and the total amount of both binders is 10
A self-fusing damping material and a hard ferrite particle powder comprising mixing and mixing the filler material and the binder materials such that the amount of the filler material is 150 to 600 parts by weight with respect to 0 parts by weight; In a self-fusing type vibration damping material obtained by molding a filling material containing an auxiliary filler by using a binding material, an ethylene-vinyl acetate copolymer and a petroleum resin are used as the binding material, and the two binding materials are used. The amount of the hard ferrite particle powder is more than 50 parts by weight and not more than 400 parts by weight based on 100 parts by weight of
The amount of the auxiliary filler Ah in the range of 1 to 200 parts by weight
And the total amount of both filler materials is
A self-fusing type vibration damping material comprising a mixture of the filler material and the binder materials so as to be in a range of 100 to 600 parts by weight with respect to 0 parts by weight.
【００１３】本発明に係る自己融着式制振材は、せん断
密着強度が１．０ｋｇ／ｃｍ2 以上であって脱落しにく
く、且つ、密着追従性が２．０ｍｍ以下と自己融着性が
優れたものであり、しかも、損失係数ηのピーク値が
０．３以上と制振効果が優れたものである。The self-bonding type vibration damping material according to the present invention has a shear adhesion strength of 1.0 kg / cm 2 or more and is hard to fall off, and has a self-adhesion property of 2.0 mm or less. It is excellent, and the vibration damping effect is excellent, with the peak value of the loss coefficient η being 0.3 or more.
【００１４】充填材料としてハードフェライト粒子粉末
とともに補助充填材を含む本発明に係る自己融着式制振
材は、上記諸特性を維持しながら、更に、軽量化、薄型
化、小型化を可能とすることができる。ハードフェライ
ト粒子粉末とともに用いる補助充填材が殊に鱗片状粉体
の場合には、ハードフェライト粒子粉末のみを用いる場
合に比べ軽量化、薄型化、小型化を可能とするととも
に、より損失係数ηのピーク値を向上させることができ
る。The self-welding type vibration damping material according to the present invention, which contains an auxiliary filler together with hard ferrite particle powder as a filler material, can further reduce the weight, thickness, and size while maintaining the above-mentioned various properties. can do. Particularly when the auxiliary filler used together with the hard ferrite particle powder is a flaky powder, it can be reduced in weight, thickness, and size as compared with the case where only the hard ferrite particle powder is used, and has a higher loss coefficient η. The peak value can be improved.
【００１５】次に本発明実施にあたっての諸条件につい
て述べる。本発明におけるハードフェライト粒子粉末
は、Ｂａフェライト粒子粉末、Ｓｒフェライト粒子粉末
であり、粒状、板状、不定形等のいずれの形態の粒子を
も使用することができる。ハードフェライト粒子粉末の
粒子サイズは樹脂への混練性を考慮すればＢＥＴ比表面
積で０．１〜１０ｍ2 ／ｇが好ましい。磁気特性は、磁
力による吸着力を考慮すれば保磁力が１０００ Ｏｅ以
上、残留磁化１５ｅｍｕ／ｇ以上が好ましく、更に好ま
しくは、保磁力１５００ Ｏｅ以上、残留磁化２０ｅｍ
ｕ／ｇ以上である。Next, various conditions for implementing the present invention will be described. The hard ferrite particle powder in the present invention is a Ba ferrite particle powder or a Sr ferrite particle powder, and any form of particles such as granular, plate-like, and amorphous can be used. The particle size of the hard ferrite particles is preferably 0.1 to 10 m 2 / g in terms of the BET specific surface area in consideration of the kneading property to the resin. Considering the magnetic attraction, the coercive force is preferably at least 1000 Oe and the residual magnetization is 15 emu / g or more, more preferably at least 1500 Oe and the residual magnetization is 20 em.
u / g or more.
【００１６】本発明における結合材料は、エチレン酢酸
ビニル共重合体と石油樹脂であり、それぞれ市販のもの
を配合して使用することができる。自己融着性及び制振
効果を考慮すればエチレン酢酸ビニル共重合体として
は、殊に酢酸ビニル含有量が３０〜６５重量％のエチレ
ン酢酸ビニル共重合体を使用することが好ましい。自己
融着力及び制振効果を考慮すれば、石油樹脂としては、
石油精製・石油分解等の際に副生する炭素原子数９の芳
香族不飽和炭化水素を主成分として含む留分（Ｃ９留
分）を重合した軟化点７０〜１３０℃の芳香族系石油樹
脂又はＣ９留分を６５重量％以上と炭素原子数４、５の
脂肪族不飽和炭化水素を成分として含む留分（Ｃ４、Ｃ
５留分）を共重合した軟化点６０〜１２０℃の脂肪族・
芳香族系石油樹脂が好ましい。The binder in the present invention is an ethylene-vinyl acetate copolymer and a petroleum resin, each of which is commercially available. In consideration of the self-fusing property and the vibration damping effect, it is particularly preferable to use an ethylene vinyl acetate copolymer having a vinyl acetate content of 30 to 65% by weight as the ethylene vinyl acetate copolymer. Considering the self-bonding force and vibration damping effect, as a petroleum resin,
Aromatic petroleum resin having a softening point of 70 to 130 ° C, which is obtained by polymerizing a fraction (C9 fraction) containing as a main component an aromatic unsaturated hydrocarbon having 9 carbon atoms produced as a by-product during petroleum refining and petroleum cracking. Or a fraction containing at least 65% by weight of a C9 fraction and an aliphatic unsaturated hydrocarbon having 4 or 5 carbon atoms (C4, C4
Aliphatic) having a softening point of 60 to 120 ° C.
Aromatic petroleum resins are preferred.
【００１７】前記芳香族系石油樹脂は、例えば、石油類
を熱分解して得られる分解油留分のうち、１４０〜２２
０℃の範囲の沸点を有する留分、即ち、スチレン、ビニ
ルトルエン、インデン、ジビニルベンゼン、ビニルナフ
タレン等の１種又は２種以上を含む留分を重合すること
により得られる。The aromatic petroleum resin is, for example, 140 to 22 of a cracked oil fraction obtained by pyrolyzing petroleum.
It is obtained by polymerizing a fraction having a boiling point in the range of 0 ° C., that is, a fraction containing one or more of styrene, vinyltoluene, indene, divinylbenzene, vinylnaphthalene and the like.
【００１８】エチレン酢酸ビニル共重合体と石油樹脂と
の割合は、自己融着性及び制振効果を考慮すれば、エチ
レン酢酸ビニル共重合体１００重量部に対し石油樹脂が
１６０〜３３０重量部であることが好ましい。Considering the self-fusing property and the vibration damping effect, the ratio of the ethylene vinyl acetate copolymer to the petroleum resin is 160 to 330 parts by weight of the petroleum resin per 100 parts by weight of the ethylene vinyl acetate copolymer. Preferably, there is.
【００１９】本発明における結合材料とハードフェライ
ト粒子粉末との割合は、エチレン酢酸ビニル共重合体と
石油樹脂との合計量が１００重量部に対してハードフェ
ライト粒子粉末が１５０〜６００重量部である。１５０
重量部未満の場合には、損失係数が０．３以下であり、
十分な制振効果が得られない。６００重量部を越える場
合には、十分なせん断密着強度が得られず、密着追従性
も低いものである。The ratio of the binder material and the hard ferrite particles in the present invention is such that the total amount of the ethylene vinyl acetate copolymer and the petroleum resin is 100 parts by weight and the amount of the hard ferrite particles is 150 to 600 parts by weight. . 150
If less than parts by weight, the loss factor is 0.3 or less,
A sufficient damping effect cannot be obtained. When the amount exceeds 600 parts by weight, sufficient shear adhesion strength cannot be obtained, and adhesion followability is low.
【００２０】本発明においてハードフェライト粒子粉末
とともに用いる補助充填材は、雲母粉体、板状酸化鉄粉
体、グラファイト粉体等の鱗片状粉体やガラス、シリ
カ、樹脂系のバルーン剤や炭酸カルシウム、クレー、硫
酸バリウム、亜鉛華等を用いることができる。鱗片状粉
体の大きさは板面径が１〜１０００μｍ程度、好ましく
は１〜５００μｍ程度のものが使用できる。In the present invention, the auxiliary filler used together with the hard ferrite particle powder is flaky powder such as mica powder, plate-like iron oxide powder, graphite powder, glass, silica, resin-based ballooning agent and calcium carbonate. , Clay, barium sulfate, zinc white and the like can be used. As the size of the flaky powder, those having a plate surface diameter of about 1 to 1000 μm, preferably about 1 to 500 μm can be used.
【００２１】ハードフェライト粒子粉末は、エチレン酢
酸ビニル共重合体と石油樹脂との合計量１００重量部に
対して５０重量部を越え、４００重量部以下である。５
０重量部以下の場合には、十分な磁気吸着力が得られ
ず、天井面、垂直面への取り付けが不可能となる。４０
０重量部を越える場合にも、本発明の目的とする制振効
果が得られるが必要以上に配合する意味がない。The amount of the hard ferrite particles is more than 50 parts by weight and not more than 400 parts by weight based on 100 parts by weight of the total of the ethylene vinyl acetate copolymer and the petroleum resin. 5
When the amount is less than 0 parts by weight, a sufficient magnetic attraction force cannot be obtained, and it is impossible to mount the magnetic head on a ceiling surface or a vertical surface. 40
When the amount exceeds 0 parts by weight, the desired vibration damping effect of the present invention can be obtained, but there is no point in mixing more than necessary.
【００２２】補助充填材は、エチレン酢酸ビニル共重合
体と石油樹脂との合計量が１００重量部に対して１〜２
００重量部である。１重量部未満の場合には、効果的に
軽量化、薄型化、小型化することが困難である。２００
重量部を越える場合には、十分なせん断密着強度が得ら
れず、密着追従性も低いものである。制振効果を維持し
つつ効果的に軽量化、薄型化、小型化する為には、下限
値は１０重量部が好ましい。The auxiliary filler is used in an amount of from 1 to 2 parts by weight based on 100 parts by weight of the total amount of the ethylene vinyl acetate copolymer and the petroleum resin.
00 parts by weight. If the amount is less than 1 part by weight, it is difficult to effectively reduce the weight, thickness, and size. 200
When the amount exceeds the weight part, sufficient shear adhesion strength cannot be obtained and adhesion followability is low. In order to effectively reduce the weight, thickness, and size while maintaining the damping effect, the lower limit is preferably 10 parts by weight.
【００２３】ハードフェライト粒子粉末と補助充填材と
の合計量は、結合材料１００重量部に対して１００〜６
００重量部である。１００重量部未満の場合には、十分
な制振効果が得られない。６００重量部を越える場合に
は、密着強度、密着追従性が低いものとなる。The total amount of the hard ferrite particles and the auxiliary filler is 100 to 6 parts by weight per 100 parts by weight of the binder.
00 parts by weight. If the amount is less than 100 parts by weight, a sufficient vibration damping effect cannot be obtained. If the amount exceeds 600 parts by weight, the adhesion strength and adhesion followability are low.
【００２４】補助充填材として鱗片状粉体を用いた場合
には、ハードフェライト粒子粉末を単独で使用した場合
に比べ、より効果的に制振効果を向上させることがで
き、損失係数ηが０．３２以上が得られる。When flaky powder is used as the auxiliary filler, the vibration damping effect can be more effectively improved as compared with the case where hard ferrite particle powder is used alone, and the loss coefficient η is zero. .32 or more are obtained.
【００２５】本発明においては、制振材の各種特性を向
上させる為に通常使用されるプロセスオイル、ＤＯＰ、
ステアリン酸、ステアリン酸Ｚｎ、ステアリン酸Ｍｇ、
ステアリン酸Ｃａ等の可塑剤又は、熱可塑性樹脂やゴム
等の高分子物質等を含有させることができる。In the present invention, the process oil, DOP, and DOP generally used to improve various characteristics of the damping material are used.
Stearic acid, Zn stearate, Mg stearate,
A plasticizer such as Ca stearate or a polymer substance such as a thermoplastic resin or rubber can be contained.
【００２６】[0026]
【作用】本発明において最も重要な点は、ハードフェラ
イト粒子粉末を充填材料とし該充填材料を結合材料を用
いて成形してなる自己融着式制振材において、前記結合
材料としてエチレン酢酸ビニル共重合体と石油樹脂とを
用いるとともに、当該両結合材料の合計量が１００重量
部に対して前記充填材料の量が１５０〜６００重量部と
なるように前記充填材料と前記両結合材料とを混合配合
してなる自己融着式制振材は、自己融着性が優れてお
り、しかも、制振効果が高いという事実である。The most important point in the present invention is that a self-welding type vibration damping material obtained by molding a hard ferrite particle powder as a filler material and using the filler material as a binder is provided. A polymer and a petroleum resin are used, and the filler and the binder are mixed so that the amount of the filler is 150 to 600 parts by weight based on 100 parts by weight of the binder. This is the fact that the self-welding type vibration damping material thus blended has excellent self-welding properties and high damping effect.
【００２７】本発明において、ハードフェライト粒子粉
末及び補助充填材を配合してなる充填材料を結合材料を
用いて成形してなる自己融着式制振材において、前記結
合材料としてエチレン酢酸ビニル共重合体と石油樹脂と
を用いるとともに、当該両結合材料の合計量１００重量
部に対して前記ハードフェライト粒子粉末の量が５０重
量部を越え、４００重量部以下であって、前記補助充填
材の量が１〜２００重量部の範囲内であり、且つ、当該
両充填材料の合計量が前記両結合材料１００重量部に対
して１００〜６００重量部の範囲となるように、前記充
填材料と前記両結合材料とを混合配合してなる自己融着
式制振材は、自己融着性が優れており、しかも制振効果
が高いという諸特性を維持しながら、更に、軽量化、薄
型化、小型化を可能にすることができるという事実であ
る。According to the present invention, in a self-fusing type vibration damping material obtained by molding a filler material comprising a hard ferrite particle powder and an auxiliary filler material using a binder material, the binder material may be ethylene vinyl acetate copolymer. The combined use of the hard ferrite particles is 50 weight parts with respect to 100 parts by weight of the combined materials.
Beyond the amount unit, equal to or less than 400 parts by weight, the amount of the auxiliary filler is in the range of 1 to 200 parts by weight, and, the total amount of the both filler material wherein both coupling material 100 parts by weight The self-welding type vibration damping material obtained by mixing and blending the filler material and the two binder materials so as to be in the range of 100 to 600 parts by weight has excellent self-fusing properties, and furthermore, has a damping effect. This is the fact that it is possible to further reduce the weight, thickness, and size while maintaining the various characteristics of high.
【００２８】本発明に係る自己融着式制振材が、自己融
着性が優れており、しかも制振効果が高い理由につい
て、本発明者は、後出の比較例に示す通り、結合材料と
して瀝青物質を用いた場合、結合材料としてエチレン酢
酸ビニル共重合体を単独で用いた場合のいずれの場合に
も本発明の目的とする効果が得られないことから、ハー
ドフェライト粒子粉末とエチレン酢酸ビニル共重合体及
び石油樹脂からなる特定の結合材料との相乗効果による
ものと考えている。尚、石油樹脂を単独で用いた場合に
は、靱性が著しく乏しく成形が不可能である。Regarding the reason why the self-fusing type vibration damping material according to the present invention is excellent in self-fusing property and high in damping effect, the present inventor has proposed a bonding material as shown in a comparative example described later. When a bituminous substance is used as the binder material, the desired effect of the present invention cannot be obtained in any case where the ethylene-vinyl acetate copolymer is used alone as the binder material. It is thought to be due to a synergistic effect with a specific bonding material composed of a vinyl copolymer and a petroleum resin. When a petroleum resin is used alone, the toughness is extremely poor and molding is impossible.
【００２９】[0029]
【実施例】次に、実施例及び比較例により本発明を説明
する。本発明における損失係数ηは２ｍｍの厚みの制振
シートを用い片持梁式共振法により測定した。Next, the present invention will be described with reference to examples and comparative examples. Loss factor in the present invention η was measured by cantilever beam type resonance method using a damping sheet of 2mm thickness.
【００３０】自己融着性は、下記の２方法によるオーバ
ーハング焼き付け試験に基づいて測定した値で示した。
即ち、オーバーハング焼き付け試験の第一の方法は、長
さ３００ｍｍ×巾３００ｍｍ×厚み０．８ｍｍの冷間圧
延鋼板の表面に長さ２００ｍｍ×巾２００ｍｍ×厚み
２．０ｍｍの試験片を室温下で磁力により密着させた
後、当該試験片が下方になる様に試験片が密着した前記
冷間圧延鋼板を水平に懸垂した状態で温度１８０℃で６
０分間加熱した時に脱落するか否かにより判断した。The self-fusing property was indicated by a value measured based on an overhang baking test by the following two methods.
That is, the first method of the overhang baking test, a 200 mm long × 200 mm wide × 2.0 mm thick test piece on a surface of a cold-rolled steel plate having a length of 300 mm × width 300 mm × thickness 0.8 mm at room temperature. After being brought into close contact with each other by magnetic force, the cold-rolled steel sheet to which the test piece was adhered so that the test piece was downward was horizontally suspended at a temperature of 180 ° C. for 6 hours.
Judgment was made based on whether or not it dropped off when heated for 0 minutes.
【００３１】第二の方法は、長さ５０ｍｍ×巾７０ｍｍ
×厚み０．８ｍｍの大きさで、且つ、巾７０ｍｍの一辺
中央部に長さ２５ｍｍ×巾２５ｍｍの凸状の突起部を同
一平面上に有する鋼板と当該鋼板の凸状の突起部と契合
する凹部を有する長さ１５０ｍｍ×巾７０ｍｍ×厚み
０．８ｍｍの鋼板とからなる試験片鋼板を長さ２００ｍ
ｍ×巾７０ｍｍ×厚み２ｍｍのベース鋼板上に乗せ四端
を動かないように留めた二板の鋼板セットを作成し、次
いで、巾２５ｍｍ×長さ１００ｍｍ×厚み２ｍｍの試験
片を当該試験片の巾方向の一端を前記試験片鋼板の凸状
の突起部を覆うように重ねあわせて試験片鋼板の長さ方
向に平行に載置して磁力で密着させた後、当該試験片が
下方になる様に試験片が密着した前記鋼板セットを水平
に懸垂した状態で温度１８０℃で６０分間加熱して焼き
付けを行い、室温にて保冷した後、ベース鋼板をはず
す。試験片が融着した試験片鋼板を引張試験機に取り付
け２００ｍｍ／分の速度で引張り、融着面の破断最大荷
重を測定し、融着面の面積（６．２５ｃｍ2 ）で除して
得られた値をせん断密着強度として示した。せん断密着
強度は１．０ｋｇ／ｃｍ2 以上であれば実用上問題がな
い。The second method is 50 mm long × 70 mm wide.
A steel plate having a thickness of 0.8 mm and a convex protrusion having a length of 25 mm and a width of 25 mm on the same plane at the center of one side of a width of 70 mm, and engaging with the convex protrusion of the steel plate. A test piece steel plate consisting of a steel plate having a recess and having a length of 150 mm x a width of 70 mm x a thickness of 0.8 mm is 200 m in length.
A two-sheet steel plate set was placed on a base steel plate of mx 70 mm wide x 2 mm thick and the four ends were fixed so as not to move. Then, a test piece 25 mm wide x 100 mm long x 2 mm thick was prepared. After one end in the width direction is overlapped so as to cover the convex protrusion of the test piece steel plate, and placed in parallel with the length direction of the test piece steel plate and closely adhered by magnetic force, the test piece is lowered. The steel sheet set to which the test pieces were closely adhered was heated and baked at a temperature of 180 ° C. for 60 minutes in a state of being hung horizontally, cooled at room temperature, and then the base steel sheet was removed. A test piece steel plate to which the test piece was fused was attached to a tensile tester and pulled at a speed of 200 mm / min. The maximum load at break of the fusion surface was measured, and the result was divided by the area of the fusion surface (6.25 cm 2 ). The obtained value was shown as shear adhesion strength. If the shear adhesion strength is 1.0 kg / cm 2 or more, there is no practical problem.
【００３２】密着追従性は、厚み０．８ｍｍ、巾３００
ｍｍの鋼板を用いて凹凸型を形成し、形成された該凹型
部分の正面図における形状が、上方に広がる台形（高さ
２０ｍｍ、上底部の長さ８０ｍｍ、下底部鋼板の両端曲
部における傾斜角度１４０°、下底部曲線の内部曲率半
径３ｍｍ）となるように製作した基板に制振シート（厚
み２ｍｍ、巾１５０ｍｍ、長さ２００ｍｍ）を載置し、
次いで、１５０℃で３０分間乾燥機中で加熱した後空気
中に取り出し、常温まで冷却して得られた試験片を用
い、該試験片の下底部鋼板の曲部における鋼板と制振シ
ートとの間の空隙距離を測定した値で示した。The adhesion followability is 0.8 mm in thickness and 300 in width.
mm in the form of a concave / convex mold, and the shape of the formed concave portion in the front view is upwardly trapezoidal (height: 20 mm, length of the upper bottom: 80 mm, inclination at both ends of the curved portion of the lower bottom steel plate). A vibration damping sheet (thickness 2 mm, width 150 mm, length 200 mm) is placed on a substrate manufactured so as to have an angle of 140 ° and an inner curvature radius of a lower bottom curve of 3 mm.
Next, after heating in a dryer at 150 ° C. for 30 minutes, the sample was taken out into the air, cooled to room temperature, and the test piece obtained was used. The gap distance between them was indicated by a measured value.
【００３３】比重は、電子比重計ＥＷ１２０ＳＧ（ミラ
ージュ貿易（株）製）を用いて測定した値で示した。The specific gravity was indicated by a value measured using an electronic hydrometer EW120SG (manufactured by Mirage Trading Co., Ltd.).
【００３４】[0034]
実施例１ 酢酸ビニル含有量４０ｗｔ％のエチレン酢酸ビニル共重
合体３３重量部とＣ９留分重合による芳香族系石油樹脂
（軟化点１０２℃、ガードーナー色数６、臭素価２１．
４）６７重量部からなる結合材料に対し、バリウムフェ
ライト粉末（ＢＥＴ比表面積１．９ｍ2 ／ｇ、保磁力＝
２４００ Ｏｅ、残留磁化＝３３．４ｅｍｕ／ｇ）１６
０重量部及び雲母粉体（重量平均板面径３４０μｍ、重
量平均板状比（板面径：厚み）８０）７０重量部を添加
配合し、該配合物を加圧ニーダーにて１０分間加熱混合
後、カレンダーロールで圧延し、着磁装置にて着磁し、
厚さ２ｍｍの制振シートを作成した。Example 1 An aromatic petroleum resin obtained by polymerization of 33 parts by weight of an ethylene vinyl acetate copolymer having a vinyl acetate content of 40% by weight and a C9 fraction (softening point: 102 ° C., Gardner color number: 6, bromine number: 21.
4) A barium ferrite powder (BET specific surface area: 1.9 m 2 / g, coercive force =
2400 Oe, residual magnetization = 33.4 emu / g) 16
0 parts by weight and 70 parts by weight of mica powder (weight average plate surface diameter: 340 μm, weight average plate ratio (plate surface diameter: thickness): 80) were added and mixed, and the mixture was heated and mixed in a pressure kneader for 10 minutes. After that, roll with a calender roll, magnetize with a magnetizing device,
A vibration damping sheet having a thickness of 2 mm was prepared.
【００３５】得られた制振シートを巾１５ｍｍ、長さ２
２０ｍｍに裁断し、０．８ｍｍ厚鋼板（１５×３００ｍ
ｍ）の基板に載置し、１５０℃で３０分間加熱融着させ
試験片を得た。この試験片の各温度における損失係数
（η）を片持梁式共振法により得た。損失係数ηのピー
ク値は温度４０℃において０．４２であり、制振効果の
優れたものであった。また、オーバーハング焼き付け試
験によるせん断密着強度は１．９ｋｇ／ｃｍ２であり、
密着追従性は１ｍｍ以下であり優れたものであった。こ
のシートの比重は２．０であった。The obtained damping sheet is 15 mm in width and 2 in length.
Cut to 20mm, 0.8mm thick steel plate (15x300m
m) was placed on the substrate and heated and fused at 150 ° C. for 30 minutes to obtain a test piece. Loss factor at each temperature of the test piece (eta) was obtained by cantilever-type resonance method. The peak value of the loss coefficient η was 0.42 at a temperature of 40 ° C., indicating that the vibration damping effect was excellent. The shear adhesion strength by the overhang baking test was 1.9 kg / cm 2 ,
The adhesion followability was 1 mm or less, which was excellent. The specific gravity of this sheet was 2.0.
【００３６】実施例２〜１０、比較例１〜３ エチレン酢酸ビニル共重合体の種類及び量、石油樹脂の
種類及び量、ハードフェライト粒子粉末の種類及び量、
補助充填材の種類及び量を種々変化させた以外は実施例
１と同様にして制振シートを作成した。主要製造条件及
び制振シートの諸特性を表１及び２に示す。尚、表１
中、炭酸カルシウムの平均粒径はＪＩＳＺ８８０１の乾
式法により測定した値で示した。Examples 2 to 10, Comparative Examples 1 to 3 The type and amount of ethylene vinyl acetate copolymer, the type and amount of petroleum resin, the type and amount of hard ferrite particle powder,
A vibration damping sheet was prepared in the same manner as in Example 1 except that the type and amount of the auxiliary filler were variously changed. Tables 1 and 2 show main production conditions and various characteristics of the vibration damping sheet. Table 1
The average particle size of calcium carbonate is shown by a value measured by a dry method according to JISZ8801.
【００３７】比較例４ ブロンアスファルト（針入度２０／３０、融点９０℃）
８７重量部及びブチルゴムＪＳＲ・Ｂｕｔｙｌ ２６８
（商品名：日本合成ゴム（株）製）１３重量部からなる
結合材料に対し、バリウムフェライト粉末（ＢＥＴ比表
面積１．９ｍ2／ｇ、保磁力＝２４００ Ｏｅ、残留磁
化＝３３．４ｅｍｕ／ｇ）１２５重量部及び雲母粉体
（重量平均板面径３４０μｍ、重量平均板状比（板面
径：厚み）８０）２５重量部とを添加配合し、該配合物
を加厚ニーダーにて１０分間加熱混合後、カレンダーロ
ールで圧延し、着磁装置にて着磁し、厚さ２ｍｍの制振
シートを作成した。Comparative Example 4 Bron asphalt (penetration 20/30, melting point 90 ° C.)
87 parts by weight and butyl rubber JSR Butyl 268
Barium ferrite powder (BET specific surface area: 1.9 m 2 / g, coercive force = 2400 Oe, residual magnetization = 33.4 emu / g) with respect to a binder material consisting of 13 parts by weight (trade name: manufactured by Nippon Synthetic Rubber Co., Ltd.) ) 125 parts by weight and 25 parts by weight of mica powder (weight average plate surface diameter 340 μm, weight average plate ratio (plate surface diameter: thickness) 80) are added and the mixture is added to a thickening kneader for 10 minutes. After the heating and mixing, the resultant was rolled by a calender roll and magnetized by a magnetizing device to prepare a vibration-damping sheet having a thickness of 2 mm.
【００３８】得られた制振シートを巾１５ｍｍ、長さ２
２０ｍｍに裁断し、０．８ｍｍ厚鋼板（１５×３００ｍ
ｍ）の基板に載置し、１５０℃で３０分間加熱融着させ
試験片を得た。この試験片の各温度における損失係数
（η）を片持梁式共振法により得た。損失係数ηのピー
ク値は温度１０℃において０．１２であり、制振効果が
悪いものであった。The obtained damping sheet is 15 mm in width and 2 in length.
Cut to 20mm, 0.8mm thick steel plate (15x300m
m) was placed on the substrate and heated and fused at 150 ° C. for 30 minutes to obtain a test piece. The loss coefficient (η) at each temperature of this test piece was obtained by a cantilever resonance method. The peak value of the loss coefficient η was 0.12 at a temperature of 10 ° C., and the damping effect was poor.
【００３９】[0039]
【表１】 [Table 1]
【００４０】[0040]
【表２】 [Table 2]
【００４１】[0041]
【発明の効果】本発明に係る自己融着式制振材は、前出
実施例に示した通り、自己融着性が優れており、しか
も、制振効果が高いものであるから、軽量化、薄型化、
小型化が可能であり、装着に際して位置のずれや垂れ下
がりを抑制、防止することができることによって施工性
や作業性が優れたものである。The self-fusing type vibration damping material according to the present invention is excellent in self-fusing property and high in damping effect as shown in the above-mentioned embodiment. , Thinning,
It is possible to reduce the size and to suppress and prevent displacement and drooping during mounting, so that workability and workability are excellent.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 山本 一美 広島県東広島市志和町志和堀（無番地) 株式会社ヒロタニ志和工場内 (72)発明者 藤井 泰彦 広島県広島市中区舟入南４丁目１番２号 戸田工業株式会社創造センター内 (72)発明者 戸田 哲郎 広島県広島市中区舟入南４丁目１番２号 戸田工業株式会社創造センター内 審査官 松井 佳章 (56)参考文献 特開 平５−156098（ＪＰ，Ａ) (58)調査した分野(Int.Cl.6，ＤＢ名) C08L 23/00 - 23/36 C08L 57/02 ──────────────────────────────────────────────────続 き Continued on the front page (72) Kazumi Yamamoto, Inventor Shiwabori, Shiwa-cho, Higashihiroshima-shi, Hiroshima (No address) Inside the Hirotani Shiwa Plant (72) Inventor Yasuhiko Fujii 4 Funairi Minami, Naka-ku, Hiroshima-shi, Hiroshima 1-2 1-2, Toda Kogyo Co., Ltd. Creative Center (72) Inventor Tetsuro Toda 4-1-2, Funariminami, Naka-ku, Hiroshima-shi, Hiroshima Examiner in Toda Kogyo Co., Ltd. Creative Center Yoshiaki Matsui (56) References JP-A-5-156098 (JP, A) (58) Fields investigated (Int. Cl. 6 , DB name) C08L 23/00-23/36 C08L 57/02
Claims (2)
し該充填材料を結合材料を用いて成形してなる自己融着
式制振材において、前記結合材料としてエチレン酢酸ビ
ニル共重合体と石油樹脂とを用いるとともに当該両結合
材料の合計量が１００重量部に対して前記充填材料の量
が１５０〜６００重量部となるように前記充填材料と前
記両結合材料とを混合配合することを特徴とする自己融
着式制振材。1. A self-fusing type vibration damping material obtained by molding hard ferrite particle powder as a filler material and molding the filler material using a binder material, wherein an ethylene vinyl acetate copolymer and a petroleum resin are used as the binder material. Wherein said filler and said binder are mixed and blended such that the total amount of said binder is 150 to 600 parts by weight with respect to 100 parts by weight of said binder. Fusion-type damping material.
材を配合してなる充填材料を結合材料を用いて成形して
なる自己融着式制振材において、前記結合材料としてエ
チレン酢酸ビニル共重合体と石油樹脂とを用いるととも
に当該両結合材料の合計量１００重量部に対して前記ハ
ードフェライト粒子粉末の量が５０重量部を越え、４０
０重量部以下であって、前記補助充填材の量が１〜２０
０重量部の範囲内であり、且つ、当該両充填材料の合計
量が前記結合材料１００重量部に対して１００〜６００
重量部の範囲となるように、前記充填材料と前記両結合
材料とを混合配合することを特徴とする自己融着式制振
材。2. A self-fusing type vibration damping material obtained by molding a filler material comprising a hard ferrite particle powder and an auxiliary filler material using a binder material, wherein the binder material comprises an ethylene vinyl acetate copolymer. When the amount of the hard ferrite particles exceeds 50 parts by weight and the total amount of both binder materials is 100 parts by weight ,
0 parts by weight or less, and the amount of the auxiliary filler is 1 to 20
0 in the range of parts by weight, and the total amount of the two filler materials to the bond material 100 parts by weight of 100 to 600
A self-welding type vibration damping material, wherein the filling material and the both bonding materials are mixed and blended so as to be in a range of parts by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9368292A JP2883967B2 (en) | 1992-03-19 | 1992-03-19 | Self-fusing damping material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9368292A JP2883967B2 (en) | 1992-03-19 | 1992-03-19 | Self-fusing damping material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05262935A JPH05262935A (en) | 1993-10-12 |
| JP2883967B2 true JP2883967B2 (en) | 1999-04-19 |
Family
ID=14089179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9368292A Expired - Fee Related JP2883967B2 (en) | 1992-03-19 | 1992-03-19 | Self-fusing damping material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2883967B2 (en) |
-
1992
- 1992-03-19 JP JP9368292A patent/JP2883967B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05262935A (en) | 1993-10-12 |
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