JPH01156055A - Spot-weldable composite damping material - Google Patents
Spot-weldable composite damping materialInfo
- Publication number
- JPH01156055A JPH01156055A JP31567487A JP31567487A JPH01156055A JP H01156055 A JPH01156055 A JP H01156055A JP 31567487 A JP31567487 A JP 31567487A JP 31567487 A JP31567487 A JP 31567487A JP H01156055 A JPH01156055 A JP H01156055A
- Authority
- JP
- Japan
- Prior art keywords
- viscoelastic resin
- conductive metal
- resin layer
- metal filler
- damping material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000013016 damping Methods 0.000 title claims abstract description 59
- 239000002131 composite material Substances 0.000 title claims abstract description 30
- 239000000463 material Substances 0.000 title claims abstract description 30
- 229910052751 metal Inorganic materials 0.000 claims abstract description 43
- 239000002184 metal Substances 0.000 claims abstract description 43
- 229920005989 resin Polymers 0.000 claims abstract description 40
- 239000011347 resin Substances 0.000 claims abstract description 40
- 239000012790 adhesive layer Substances 0.000 claims abstract description 26
- 239000000945 filler Substances 0.000 claims abstract description 26
- 239000010410 layer Substances 0.000 claims abstract description 25
- 239000002245 particle Substances 0.000 claims abstract description 11
- 229920002725 thermoplastic elastomer Polymers 0.000 claims abstract description 11
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims abstract description 9
- 230000009477 glass transition Effects 0.000 claims abstract description 5
- 239000011162 core material Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 abstract description 24
- 239000000853 adhesive Substances 0.000 abstract description 23
- 229910000831 Steel Inorganic materials 0.000 description 14
- 239000010959 steel Substances 0.000 description 14
- 239000010935 stainless steel Substances 0.000 description 7
- 229910001220 stainless steel Inorganic materials 0.000 description 7
- 238000003466 welding Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000013032 Hydrocarbon resin Substances 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229920002367 Polyisobutene Polymers 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 description 1
- 125000002777 acetyl group Chemical class [H]C([H])([H])C(*)=O 0.000 description 1
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 1
- 229920001893 acrylonitrile styrene Polymers 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- NTXGQCSETZTARF-UHFFFAOYSA-N buta-1,3-diene;prop-2-enenitrile Chemical compound C=CC=C.C=CC#N NTXGQCSETZTARF-UHFFFAOYSA-N 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 229920001940 conductive polymer Polymers 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920006270 hydrocarbon resin Polymers 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- SCUZVMOVTVSBLE-UHFFFAOYSA-N prop-2-enenitrile;styrene Chemical compound C=CC#N.C=CC1=CC=CC=C1 SCUZVMOVTVSBLE-UHFFFAOYSA-N 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Landscapes
- Vibration Prevention Devices (AREA)
- Laminated Bodies (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は建築材料、自動車等に用いられる複合制振材に
係り、特にスポット溶接性に優れた複合制振材に関する
。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a composite vibration damping material used for building materials, automobiles, etc., and particularly to a composite vibration damping material with excellent spot weldability.
〈従来技術とその問題点〉
従来から建築材料をはじめとして車輌、船舶、家電等に
おける振動および振動に伴う騒音を防止することを目的
として種々の制振性材料が提案され、実用化されている
。 その中でも２枚の鋼板の間に粘弾性樹脂をはさみ込
んだサンドイッチ型複合制振鋼板は、鋼材のもつすぐれ
た機械的特性と粘弾性樹脂のもつすぐれた制振性能を具
備する点で、構造材料として優秀であり、利用分野も広
い。<Prior art and its problems> Various vibration-damping materials have been proposed and put into practical use for the purpose of preventing vibrations and noise associated with vibrations in building materials, vehicles, ships, home appliances, etc. . Among these, sandwich-type composite vibration damping steel plates, which are made by sandwiching a viscoelastic resin between two steel plates, are structurally superior because they have the excellent mechanical properties of steel and the excellent vibration damping performance of viscoelastic resin. It is an excellent material and has a wide range of applications.
複合制振鋼板の性能は粘弾性樹脂によるところが大きく
、粘弾性樹脂として、例えばポリイソブチレン、オレフ
ィン系炭化水素樹脂（特開昭５４−４３２５１号）、ブ
チルゴム（特開昭５９−５２６４４号）、ポリ塩化ビニ
ル（特開昭５１−２２７８１号）、ポリビニルアセター
ル（特公昭５４−２３４８９号）、アクリロニトリル−
ブタジェン共重合体ゴム／エポキシ樹脂（特開昭６０−
２４５５５０号）等多くのものが報告されている。The performance of composite damping steel sheets is largely dependent on the viscoelastic resin, and examples of the viscoelastic resin include polyisobutylene, olefin hydrocarbon resin (Japanese Patent Application Laid-Open No. 54-43251), butyl rubber (Japanese Patent Application Laid-open No. 59-52644), and polyester resin. Vinyl chloride (Japanese Patent Publication No. 51-22781), polyvinyl acetal (Japanese Patent Publication No. 54-23489), acrylonitrile
Butadiene copolymer rubber/epoxy resin (JP-A-60-
No. 245550) and many others have been reported.
しかし、これらの従来の粘弾性樹脂の多くは、ある温度
の付近では高い制振性能を有していても、適用温度範囲
がいわゆる中、高音域であったり、極めて狭い温度範囲
であフたすして常温付近の広い温度域での制振性能には
劣るという欠点があった。 本発明者らは特開昭６２−
９９５０号においてそれらの欠点を克服した常温付近の
広い温度域ですぐれた制振性能を有する制振材を発明す
るに至ったが、中間層が通電性のない高分子材料である
ために、スポット溶接ができず、自動車材料等の溶接を
施す部位には使用できなかった。However, although many of these conventional viscoelastic resins have high vibration damping performance near a certain temperature, they are only applicable in the so-called medium and high frequency range, or are not effective in an extremely narrow temperature range. Therefore, it had the disadvantage of being inferior in vibration damping performance in a wide temperature range around room temperature. The present inventors have JP-A-62-
In No. 9950, they invented a damping material that overcomes these drawbacks and has excellent damping performance in a wide temperature range around room temperature. It could not be used for welding parts such as automobile materials because it could not be welded.
中間層に導電性のない高分子材料をはさみ込んだサンド
イッチ型複合制振鋼板にスポット溶接性を付与するため
に導電性金属フィラーを粘弾性樹脂に混入する方法は、
多々報告されているが、常温附近ですぐれた制振性能を
有する様な極めて柔らかい樹脂フィルム中に混入するこ
とは現実問題としてＴダイ式、カレンダ一方式のいずれ
の方法によっても困難である。 また、貼り合わせのラ
インに於ける樹脂フィルムの切れ、破れ等のトラブルの
原因にもなる。A method of mixing a conductive metal filler into a viscoelastic resin in order to impart spot weldability to a sandwich-type composite damping steel plate in which a non-conductive polymer material is sandwiched between the intermediate layers is as follows.
Although it has been reported many times, it is actually difficult to mix it into an extremely soft resin film that has excellent vibration damping performance at around room temperature using either the T-die method or the calendar one-way method. It also causes troubles such as cuts and tears in the resin film on the bonding line.
そこで、常温付近の広い温度域ですぐれた制振性能を有
し、かつスポット溶接性を有する複合制振材が求められ
ている。Therefore, there is a need for a composite damping material that has excellent damping performance in a wide temperature range around room temperature and has spot weldability.
〈発明の目的〉
本発明は従来の技術の問題点を解決しようとするもので
、常温付近の広い温度域ですぐれた制振性能を有し、か
つ、スポット溶接性を有する複合制振材を提供しようと
するものである。<Object of the Invention> The present invention aims to solve the problems of the conventional technology, and provides a composite vibration damping material that has excellent vibration damping performance in a wide temperature range around room temperature and has spot weldability. This is what we are trying to provide.
〈発明の構成〉
本発明は、接着剤層を有する金属板で粘弾性樹脂層を挟
持した複合制振材において、前記接着剤層に導電性金属
フィラーを配合してなることを特徴とするスポット溶接
可能な複合制振材に関するものである。<Structure of the Invention> The present invention provides a composite damping material in which a viscoelastic resin layer is sandwiched between metal plates having an adhesive layer, and a spot characterized in that a conductive metal filler is blended into the adhesive layer. This invention relates to weldable composite damping materials.
前記粘弾性樹脂はそのガラス転移点が２０℃以下であり
、スプリング式硬さ試験Ａ型による硬さが６０以下のア
クリロニトリル系の熱可塑性エラストマーであるのが好
ましい。The viscoelastic resin is preferably an acrylonitrile-based thermoplastic elastomer having a glass transition point of 20° C. or lower and a hardness of 60 or lower according to type A spring type hardness test.
また、前記粘弾性樹脂層と接着剤層が粘弾性樹脂層の厚
さに対する前記接着剤層の総厚さが１以下であるのが好
ましい。Further, it is preferable that the total thickness of the viscoelastic resin layer and the adhesive layer is 1 or less relative to the thickness of the viscoelastic resin layer.
また、前記導電性金属フィラーはその粒径が前記接着剤
層と粘弾性樹脂層を合わせた厚みとの比で０．５〜３．
０であり、芯材に対する導電性金属フィラーの配合量が
５〜３０体積％であるのが好ましい。Further, the conductive metal filler has a particle size of 0.5 to 3.0 in ratio to the combined thickness of the adhesive layer and the viscoelastic resin layer.
It is preferable that the content of the conductive metal filler to the core material is 5 to 30% by volume.
以下、本発明の詳細な説明する。The present invention will be explained in detail below.
第１図は、本発明の複合制振材の断面図である。 粘弾
性樹脂層３が接着材層２を有する金属板１で挟持され、
接着材層２には導電性金属フィラー４が分散している。FIG. 1 is a sectional view of the composite damping material of the present invention. A viscoelastic resin layer 3 is sandwiched between metal plates 1 having an adhesive layer 2,
A conductive metal filler 4 is dispersed in the adhesive layer 2 .
粘弾性樹脂層３の粘弾性樹脂はガラス転移点が２０℃以
下であり、スプリング硬さ試験Ａ型による硬さが６０以
下の値を示すアクリロニトリル系熱可塑性エラストマー
が好ましい。The viscoelastic resin of the viscoelastic resin layer 3 is preferably an acrylonitrile-based thermoplastic elastomer having a glass transition point of 20° C. or lower and a hardness of 60 or lower according to type A spring hardness test.
アクリロニトリル系熱可塑性エラストマーとしては、ポ
リアクリロニトリル、アクリロニトリル−ブタジェン樹
脂、これらの変性体、アクリロニトリル−スチレン樹脂
、アクリロニトリル−ブタジェン−スチレン樹脂および
これらの共重合体等があげられ、商品名デンカＬＣ３Ｚ
−１０５０、デンカＬＣＳ Ｚ−４３６０（電気化学
工業■製）が例示される。Examples of acrylonitrile-based thermoplastic elastomers include polyacrylonitrile, acrylonitrile-butadiene resin, modified products thereof, acrylonitrile-styrene resin, acrylonitrile-butadiene-styrene resin, and copolymers thereof, and the product name is Denka LC3Z.
-1050 and Denka LCS Z-4360 (manufactured by Denki Kagaku Kogyo ■).
ガラス転移点が２０℃を超えるときは、常温付近で十分
な制振性が得られない。When the glass transition point exceeds 20° C., sufficient vibration damping properties cannot be obtained near room temperature.
スプリング硬さ試験Ａ型とは、ＪＩＳ Ｋ−６３０１
に準拠するものである。Spring hardness test type A is JIS K-6301
It complies with the following.
該試験による硬さが６０を超える時は良い制振性が得ら
れないとともに、スポット溶接性も不良である。When the hardness according to the test exceeds 60, good vibration damping properties cannot be obtained, and spot weldability is also poor.
本発明の複合制振材には、その用途によって種々の周波
数の振動が加えられるが、主として音による振動を考え
ると比較的低周波の成分が多いので、５００Ｈｚを標準
周波数として選定し、この周波数に対する振動減衰性能
、即ち損失係数（η）が少なくとも０．０５以上を示す
ことを本発明では制振性能を有するものとした。 該ア
クリロニトリル系熱可塑性エラストマーは広い温度範囲
（−２０℃〜＋５０℃）においても損失係数（η）が０
．０５以上を示す。The composite vibration damping material of the present invention is subjected to vibrations of various frequencies depending on its use, but considering vibration mainly due to sound, there are many relatively low frequency components, so 500Hz was selected as the standard frequency, and this frequency In the present invention, vibration damping performance is defined as having a vibration damping performance, that is, a loss coefficient (η) of at least 0.05 or more. The acrylonitrile thermoplastic elastomer has a loss coefficient (η) of 0 even in a wide temperature range (-20°C to +50°C).
．． Indicates 05 or higher.
該アクリロニトリル系熱可塑性エラストマーは金属板１
との接着性が無いので、接着材層２が不可欠である。The acrylonitrile thermoplastic elastomer is a metal plate 1
Since there is no adhesive property with the adhesive layer 2, the adhesive layer 2 is essential.
接着剤層２の接着剤としては、金属板１とアクリロニト
リル系の熱可塑性エラストマーの両者に対して接着性を
発揮できるもの、例えば、エポキシ樹脂、ポリエステル
系、ポリウレタン系接着剤等が好ましい。The adhesive for the adhesive layer 2 is preferably one that can exhibit adhesion to both the metal plate 1 and the acrylonitrile-based thermoplastic elastomer, such as an epoxy resin, polyester-based, or polyurethane-based adhesive.
また、本発明においては粘弾性樹脂層３と両金属板上の
接着剤層２の層厚比としては、粘弾性樹脂層３に対する
接着剤層２の層厚比で１以下とすることが好ましい。
粘弾性樹脂層３に対する接着剤層２の層厚比が１を越え
ると目的とする常温付近での制振性能が低下する。Further, in the present invention, the layer thickness ratio between the viscoelastic resin layer 3 and the adhesive layer 2 on both metal plates is preferably 1 or less in terms of the layer thickness ratio of the adhesive layer 2 to the viscoelastic resin layer 3. .
If the layer thickness ratio of the adhesive layer 2 to the viscoelastic resin layer 3 exceeds 1, the intended vibration damping performance near room temperature will decrease.
接着剤層２には導電性金属フィラー４が分散されている
。 導電性金属フィラー４を通して、金属板１．１間に
導通が生まれ、複合制振材にスポット溶接性が付与され
る。 また、液状の接着剤に導電性金属フィラーを混和
し、金属板に塗付して接着剤層２を形成すれば、導電性
金属フィラー４を均一に分散させることができる。A conductive metal filler 4 is dispersed in the adhesive layer 2 . Through the conductive metal filler 4, electrical continuity is created between the metal plates 1.1, and spot weldability is imparted to the composite damping material. Moreover, if a conductive metal filler is mixed with a liquid adhesive and applied to a metal plate to form the adhesive layer 2, the conductive metal filler 4 can be uniformly dispersed.
導電性金属フィラー４はステンレス粉、銅粉、鉄粉、ニ
ッケル粉等が好ましい。The conductive metal filler 4 is preferably stainless steel powder, copper powder, iron powder, nickel powder, or the like.
また、導電性金属フィラー４の平均粒径は樹脂層を挟持
する両接着剤層２と粘弾性樹脂層３を合わせた芯材厚み
との比で０．５〜３．０、特に１．０〜２．０が好まし
い。 平均粒径が上記比０．５未満のときは未通電率が
高くなり、スポット溶接性が悪くなる。 また、平均粒
径が、上記比３．０を越えるとぎは接着強度が低下する
。Furthermore, the average particle diameter of the conductive metal filler 4 is 0.5 to 3.0, particularly 1.0, as a ratio to the core material thickness, which is the sum of both adhesive layers 2 sandwiching the resin layer and the viscoelastic resin layer 3. ~2.0 is preferred. When the average grain size is less than the above ratio of 0.5, the non-current rate increases and spot weldability deteriorates. Furthermore, if the average particle diameter exceeds the above ratio of 3.0, the adhesive strength will decrease.
導電性金属フィラー４の配合量は、両金属板上の接着剤
層２と粘弾性樹脂層３の合計体積中で５〜３０体積％、
特に５〜１０体積％が好ましい。 配合量が５体積％未
溝の時は未通電率が高くなり、スポット溶接性が悪くな
る。 配合量が３０体積％を越えた時は樹脂が硬くなり
、制振性能が低下するとともに金属板１と粘弾性樹脂層
３の接着強度が低下する。The amount of the conductive metal filler 4 is 5 to 30% by volume in the total volume of the adhesive layer 2 and the viscoelastic resin layer 3 on both metal plates.
Particularly preferred is 5 to 10% by volume. When the compounding amount is 5% by volume without grooves, the non-energized rate becomes high and the spot weldability deteriorates. When the blending amount exceeds 30% by volume, the resin becomes hard, the damping performance decreases, and the adhesive strength between the metal plate 1 and the viscoelastic resin layer 3 decreases.
導電性金属フィラー４の接着剤層２への分散は液状の接
着剤中へ導電性金属フィラー４を配合し、金属板１上へ
塗付するのが好ましいが、この方法に限定されるもので
はない。Dispersion of the conductive metal filler 4 into the adhesive layer 2 is preferably carried out by mixing the conductive metal filler 4 into a liquid adhesive and applying it onto the metal plate 1, but the method is not limited to this method. do not have.
金属板１は、通常の鋼板、電気めっきや溶融めっきなど
の金属または合金の表面処理板、ステンレス鋼板、また
はアルミニウム板などが好ましい。The metal plate 1 is preferably a normal steel plate, a metal or alloy surface-treated plate such as electroplating or hot-dip plating, a stainless steel plate, or an aluminum plate.
〈実施例〉
本発明を実施例および比較例を用いて具体的に説明する
。<Examples> The present invention will be specifically described using Examples and Comparative Examples.
（実施例１）
脱脂処理を行なった鋼板（０，５ｍｍ厚）を使用し、バ
イロン３０ＳＳ （東洋紡績■製）１００部にコロネー
トしく日本ポリウレタン工業■製）を５部配合したもの
を接着剤とし、平均粒径７０μｍのステンレス粉を芯材
樹脂（熱可塑性エラストマー十接着剤）との割合で１０
体積％になる様配合し、バーコーターにより乾燥厚みで
片面１０μｍ塗布した後、５０μｍ厚のシート状熱可塑
性エラストマー（デンカＬＣ３Ｚ−１０５０（電気化学
工業■製）Ｔｇ−１０℃、Ａ型硬さ５０、アクリロニト
リル系エラストマー樹＃）をサンドイッチ構造にはさみ
込み１６０℃で１０分間加熱プレスにより圧着させた。(Example 1) A degreased steel plate (0.5 mm thick) was used, and 100 parts of Vylon 30SS (manufactured by Toyobo Co., Ltd.) was mixed with 5 parts of Coronate (manufactured by Nippon Polyurethane Industries, Ltd.) as an adhesive. , the ratio of stainless steel powder with an average particle size of 70 μm to the core resin (thermoplastic elastomer and adhesive) is 10
% by volume, coated with a bar coater to a dry thickness of 10 μm on one side, and then coated with a 50 μm thick sheet thermoplastic elastomer (Denka LC3Z-1050 (manufactured by Denki Kagaku Kogyo ■), Tg -10°C, Type A hardness 50 , acrylonitrile-based elastomer tree #) was sandwiched between the sandwich structures and pressed together using a hot press at 160° C. for 10 minutes.
制振性能は損失係数（η）の温度依存性により評価した
。 複合制振鋼板の試料を恒温槽内に設置した後、５０
０Ｈｚの周波数を使用して低温側から順に各設定温度に
対する共振点鋭度を機械インピーダンス法で求め、損失
係数（η）が０．０５以上を示す温度域を求めた。The damping performance was evaluated based on the temperature dependence of the loss coefficient (η). After placing the sample of composite damping steel plate in a constant temperature bath,
Using a frequency of 0 Hz, the resonance point sharpness for each set temperature was determined in order from the low temperature side by the mechanical impedance method, and a temperature range in which the loss coefficient (η) showed 0.05 or more was determined.
Ｔ型剥離強度（接着強度）はＪ Ｉ ５Ｋ−６８５４に
より剥離強度を測定した。T-type peel strength (adhesive strength) was measured by J I 5K-6854.
スポット溶接性は２枚の複合制振鋼板を、電極として８
Ｒ球状チップを用い、加圧力２７０Ｋｇｆ 、通電時間
１０サイクル、溶接電流８ＫＡでスポット溶接を行ない
溶接性を調べた。 判定は○印：１００％スポット溶接
可能、△印ニ一部スポット溶接可能、×印ニスポット溶
接不可能で示した。Spot weldability is achieved by using two composite damping steel plates as electrodes.
Using an R spherical tip, spot welding was performed at a pressure of 270 Kgf, a current application time of 10 cycles, and a welding current of 8 KA to examine weldability. The judgment was as follows: ○ mark: 100% spot welding possible, △ mark: spot welding possible in part, × mark: spot welding impossible.
結果を表！に示した。Show your results! It was shown to.
実施例１で得られた鋼板は一２５℃〜５５℃という広い
室温域にわたって良い制振特性を示し、スポット溶接性
も有った。 Ｔ型剥離強度も優れていた。The steel plate obtained in Example 1 exhibited good vibration damping properties over a wide room temperature range of -25°C to 55°C, and also had spot weldability. The T-peel strength was also excellent.
（実施例２）
導電性金属フィラーを平均粒径１００μｍのステンレス
粉とし、他は実施例１と同様にして、複合制振材を得た
。 実施例１と同様に、制振特性、接着力、スポット溶
接性を評価し、結果を表１に示す。(Example 2) A composite damping material was obtained in the same manner as in Example 1 except that the conductive metal filler was stainless steel powder with an average particle size of 100 μm. As in Example 1, the damping properties, adhesive strength, and spot weldability were evaluated, and the results are shown in Table 1.
実施例２で得られた鋼板は制振特性、接着力、スポット
溶接性ともに優れていた。The steel plate obtained in Example 2 had excellent vibration damping properties, adhesive strength, and spot weldability.
（実２ｉ＆例３）
導電性金属フィラーを粒径７０μｍのニッケルとし、他
は実施例１と同様にして複合制振材を得た。 実施例１
と同様に、制振特性、接着力、スポット溶接性を評価し
、結果を表１に示す。(Example 2i & Example 3) A composite damping material was obtained in the same manner as in Example 1 except that the conductive metal filler was nickel with a particle size of 70 μm. Example 1
Similarly, the damping properties, adhesive strength, and spot weldability were evaluated, and the results are shown in Table 1.
実施例３で得らねた鋼板は制振特性、接着力、スポット
溶接性ともに優れていた。The steel plate obtained in Example 3 had excellent vibration damping properties, adhesive strength, and spot weldability.
（実施例４）
導電性金属フィラーを粒径７０μｍの銅とし、他は実施
例１と同様にして複合制振材を得た。 実施例１と同様
に、制振特性、接着力、スポット溶接性を評価し、結果
を表１に示す。(Example 4) A composite damping material was obtained in the same manner as in Example 1 except that the conductive metal filler was copper with a particle size of 70 μm. As in Example 1, the damping properties, adhesive strength, and spot weldability were evaluated, and the results are shown in Table 1.
実施例４で得られた鋼板は制振特性、接着力、スポット
溶接性ともに優れていた。The steel plate obtained in Example 4 was excellent in vibration damping properties, adhesive strength, and spot weldability.
（比較例１）
導電性金属フィラーを２０μｍおよび２５０μｍのステ
ンレス粉とし、他は実施例１と同様にして複合制振材を
した。 制振特性、接着カスポット溶接性を実施例１と
同様にして評価し、結果を表１に示す。 平均粒径が２
０μｍのものはスポット溶接性がなく、平均粒径２５０
ｕｍのものは接着強度がなかった。(Comparative Example 1) A composite damping material was prepared in the same manner as in Example 1 except that the conductive metal filler was stainless steel powder of 20 μm and 250 μm. The damping properties and adhesive spot weldability were evaluated in the same manner as in Example 1, and the results are shown in Table 1. Average particle size is 2
0 μm has no spot weldability and has an average grain size of 250
um had no adhesive strength.
（比較例２）
ステンレス粉の配合量３体積％および５０体積％に変え
て、他を実施例１と同様にして複合制振材をした。 制
振特性、接着力、スポット溶接性を実施例１と同様にし
て評価し、結果を表１に示す。 配合量が３体積％のも
のはスポット溶接が一部不可であり、５０体積％のもの
は制振性、接着強度の両方が不良であった。(Comparative Example 2) Composite damping materials were prepared in the same manner as in Example 1 except that the blended amount of stainless steel powder was changed to 3% by volume and 50% by volume. The damping properties, adhesive strength, and spot weldability were evaluated in the same manner as in Example 1, and the results are shown in Table 1. When the content was 3% by volume, spot welding was partially impossible, and when the content was 50% by volume, both vibration damping properties and adhesive strength were poor.
（比較例３）
接着剤中に平均粒径１００μｍのステンレス粉を芯材樹
脂（熱可塑性エラストマー十接着剤）との割合で１０体
積％となる様配合し、バーコーターにより乾燥厚みで片
面４０μｍに実施例１と同一の金属板に塗付した後、実
施例１と同様にして複合制振材とした。制振特性、接着
力、スポット溶接性を実施例１と同様にして評価し、結
果を表１に示す。 接着性は優れているものの、制振性
およびスポット溶接性は不良であった。(Comparative Example 3) Stainless steel powder with an average particle size of 100 μm was mixed into the adhesive so that the ratio with the core resin (thermoplastic elastomer adhesive) was 10% by volume, and the dry thickness was 40 μm on one side using a bar coater. After applying it to the same metal plate as in Example 1, a composite damping material was prepared in the same manner as in Example 1. The damping properties, adhesive strength, and spot weldability were evaluated in the same manner as in Example 1, and the results are shown in Table 1. Although the adhesion was excellent, the damping properties and spot weldability were poor.
〈発明の効果〉
本発明は導電性金属フィラーを分散させた接着剤層を有
する鋼板が粘弾性樹脂を挟持した複合制振材であるため
、常温付近の広い温度域ですぐれた制振性能を有し、か
つ、優れたスポット溶接性を有する複合制振材を提供す
ることができる。<Effects of the Invention> The present invention is a composite vibration damping material in which a viscoelastic resin is sandwiched between a steel plate having an adhesive layer in which a conductive metal filler is dispersed, so that it has excellent vibration damping performance in a wide temperature range around room temperature. It is possible to provide a composite vibration damping material that has the following properties and has excellent spot weldability.
第１図は本発明の複合制振材の断面図である。 符号の説明 １・・・金属板、 ２・・・接着剤層、 ３・・・粘弾性樹脂層、 ４・・・導電性金属フィラー ＦＩＧ、１ FIG. 1 is a sectional view of the composite damping material of the present invention. Explanation of symbols 1...metal plate, 2...adhesive layer, 3... Viscoelastic resin layer, 4... Conductive metal filler FIG.1
Claims (4)
た複合制振材において、 前記接着剤層に導電性金属フィラーを配合してなること
を特徴とするスポット溶接可能な複合制振材。(1) A spot-weldable composite vibration damping material in which a viscoelastic resin layer is sandwiched between metal plates having an adhesive layer, characterized in that the adhesive layer contains a conductive metal filler. Material.
であり、スプリング式硬さ試験Ａ型による硬さが６０以
下のアクリロニトリル系の熱可塑性エラストマーである
特許請求の範囲第１項に記載のスポット溶接可能な複合
制振 材。(2) The viscoelastic resin is an acrylonitrile-based thermoplastic elastomer having a glass transition point of 20° C. or lower and a hardness of 60 or lower according to type A spring hardness test. Composite damping material that can be spot welded.
さに対する前記接着剤層の総厚さが１以下である特許請
求の範囲第２項に記載のスポット溶接可能な複合制振材
。(3) The spot weldable composite material according to claim 2, wherein the viscoelastic resin layer and the adhesive layer have a total thickness of 1 or less with respect to the thickness of the viscoelastic resin layer. Shaking material.
層と粘弾性樹脂層を合わせた厚みとの比で０．５〜３．
０であり、芯材に対する導電性金属フィラーの配合量が
５〜３０体積％である特許請求の範囲第１項ないし第３
項のいずれかに記載のスポット溶接可能な複合制振材。(4) The conductive metal filler has a particle size of 0.5 to 3.0 in ratio to the combined thickness of the adhesive layer and the viscoelastic resin layer.
Claims 1 to 3, wherein the content of the conductive metal filler to the core material is 5 to 30% by volume.
A composite damping material that can be spot welded according to any of paragraphs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31567487A JPH01156055A (en) | 1987-12-14 | 1987-12-14 | Spot-weldable composite damping material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31567487A JPH01156055A (en) | 1987-12-14 | 1987-12-14 | Spot-weldable composite damping material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01156055A true JPH01156055A (en) | 1989-06-19 |
Family
ID=18068205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31567487A Pending JPH01156055A (en) | 1987-12-14 | 1987-12-14 | Spot-weldable composite damping material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01156055A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0421439A (en) * | 1990-05-16 | 1992-01-24 | Sanyo Chem Ind Ltd | Vibration damping material |
| CN103803028A (en) * | 2014-01-20 | 2014-05-21 | 江苏海事职业技术学院 | Anti-detonation, fireproof, insulating and noise reduction ocean platform bulkhead structure |
| US9659420B2 (en) | 2013-12-27 | 2017-05-23 | Star Micronics Co., Ltd. | Security system of information processing apparatus and security control apparatus |
-
1987
- 1987-12-14 JP JP31567487A patent/JPH01156055A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0421439A (en) * | 1990-05-16 | 1992-01-24 | Sanyo Chem Ind Ltd | Vibration damping material |
| US9659420B2 (en) | 2013-12-27 | 2017-05-23 | Star Micronics Co., Ltd. | Security system of information processing apparatus and security control apparatus |
| CN103803028A (en) * | 2014-01-20 | 2014-05-21 | 江苏海事职业技术学院 | Anti-detonation, fireproof, insulating and noise reduction ocean platform bulkhead structure |
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