JPH0245581A - Adhesive sheet for vibration damping - Google Patents
Adhesive sheet for vibration dampingInfo
- Publication number
- JPH0245581A JPH0245581A JP19664888A JP19664888A JPH0245581A JP H0245581 A JPH0245581 A JP H0245581A JP 19664888 A JP19664888 A JP 19664888A JP 19664888 A JP19664888 A JP 19664888A JP H0245581 A JPH0245581 A JP H0245581A
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- vibration damping
- parts
- adhesive sheet
- polymer
- 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 47
- 230000001070 adhesive effect Effects 0.000 title claims description 27
- 239000000853 adhesive Substances 0.000 title claims description 24
- 229920000642 polymer Polymers 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 10
- 230000009477 glass transition Effects 0.000 claims abstract description 7
- 239000002657 fibrous material Substances 0.000 claims description 22
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 11
- 229920001971 elastomer Polymers 0.000 claims description 4
- 239000000806 elastomer Substances 0.000 claims description 3
- 229920006222 acrylic ester polymer Polymers 0.000 claims description 2
- 239000013013 elastic material Substances 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 abstract description 31
- 239000010959 steel Substances 0.000 abstract description 31
- 239000000835 fiber Substances 0.000 abstract description 8
- 229920000297 Rayon Polymers 0.000 abstract description 7
- 239000002964 rayon Substances 0.000 abstract description 7
- 239000004952 Polyamide Substances 0.000 abstract description 4
- 229920002647 polyamide Polymers 0.000 abstract description 4
- 229920000742 Cotton Polymers 0.000 abstract description 2
- 229920002978 Vinylon Polymers 0.000 abstract description 2
- 125000005396 acrylic acid ester group Chemical group 0.000 abstract description 2
- 229920000728 polyester Polymers 0.000 abstract description 2
- 239000002131 composite material Substances 0.000 description 11
- 229920000058 polyacrylate Polymers 0.000 description 9
- -1 acrylic ester Chemical class 0.000 description 8
- 239000010410 layer Substances 0.000 description 8
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 5
- 229920001577 copolymer Polymers 0.000 description 5
- 239000002861 polymer material Substances 0.000 description 5
- SOGAXMICEFXMKE-UHFFFAOYSA-N Butylmethacrylate Chemical compound CCCCOC(=O)C(C)=C SOGAXMICEFXMKE-UHFFFAOYSA-N 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 239000004831 Hot glue Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000007720 emulsion polymerization reaction Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000003505 polymerization initiator Substances 0.000 description 3
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 description 2
- 229910001335 Galvanized steel Inorganic materials 0.000 description 2
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 description 2
- BXKDSDJJOVIHMX-UHFFFAOYSA-N edrophonium chloride Chemical compound [Cl-].CC[N+](C)(C)C1=CC=CC(O)=C1 BXKDSDJJOVIHMX-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000008397 galvanized steel Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000009864 tensile test Methods 0.000 description 2
- JHPBZFOKBAGZBL-UHFFFAOYSA-N (3-hydroxy-2,2,4-trimethylpentyl) 2-methylprop-2-enoate Chemical compound CC(C)C(O)C(C)(C)COC(=O)C(C)=C JHPBZFOKBAGZBL-UHFFFAOYSA-N 0.000 description 1
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- UTNFQABGIDNKDO-UHFFFAOYSA-N 2-(hydroxymethylidene)butanoic acid Chemical compound CCC(=CO)C(O)=O UTNFQABGIDNKDO-UHFFFAOYSA-N 0.000 description 1
- GOXQRTZXKQZDDN-UHFFFAOYSA-N 2-Ethylhexyl acrylate Chemical compound CCCCC(CC)COC(=O)C=C GOXQRTZXKQZDDN-UHFFFAOYSA-N 0.000 description 1
- FEIQOMCWGDNMHM-UHFFFAOYSA-N 5-phenylpenta-2,4-dienoic acid Chemical compound OC(=O)C=CC=CC1=CC=CC=C1 FEIQOMCWGDNMHM-UHFFFAOYSA-N 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 229920006125 amorphous polymer Polymers 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 238000010382 chemical cross-linking Methods 0.000 description 1
- 239000011231 conductive filler Substances 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- SUPCQIBBMFXVTL-UHFFFAOYSA-N ethyl 2-methylprop-2-enoate Chemical compound CCOC(=O)C(C)=C SUPCQIBBMFXVTL-UHFFFAOYSA-N 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- VOZRXNHHFUQHIL-UHFFFAOYSA-N glycidyl methacrylate Chemical compound CC(=C)C(=O)OCC1CO1 VOZRXNHHFUQHIL-UHFFFAOYSA-N 0.000 description 1
- HBEXMKJUVPFPEZ-UHFFFAOYSA-N isocyanic acid;1,3,5-triazine-2,4,6-triamine Chemical compound N=C=O.NC1=NC(N)=NC(N)=N1 HBEXMKJUVPFPEZ-UHFFFAOYSA-N 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011342 resin composition Substances 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- IJWWYULXYAEELG-UHFFFAOYSA-N tert-butyl 2-methylprop-2-enoate;2-methylpropyl 2-methylprop-2-enoate Chemical compound CC(C)COC(=O)C(C)=C.CC(=C)C(=O)OC(C)(C)C IJWWYULXYAEELG-UHFFFAOYSA-N 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
Landscapes
- Adhesive Tapes (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野］
この発明は、制振用複合金属板の制振・接着層として使
用される制振用接着シート（フィルムも含む）に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a vibration damping adhesive sheet (including a film) used as a vibration damping/adhesive layer of a vibration damping composite metal plate.
近年、自動車や機械の振動およびその振動によた制振用
複合鋼板が開発され、これらの制振用複合鋼板を、自動
車のオイルパン、金属加工機械家電部品等に使用して、
その振動や騒音を減衰吸収することが行われている。そ
して、上記制振材料として、スチレン−アクリル酸エス
テル系共重合体と端方状無機質粉末の水分散系で構成さ
れたものや、不飽和カルボン酸またはその無水物で変成
された結晶性ポリオレフィン系無定形重合体で構成され
たもの、または、ガラス転移温度の異なる樹脂を２種類
以上積層した多層構造からなるもの等多種のものが使用
されている。In recent years, composite steel sheets for damping the vibrations of automobiles and machinery have been developed, and these vibration-damping composite steel sheets are used in automobile oil pans, metal processing machines, home appliance parts, etc.
Measures are being taken to attenuate and absorb the vibrations and noise. The above-mentioned vibration damping material may be one composed of an aqueous dispersion system of a styrene-acrylic acid ester copolymer and an edge-shaped inorganic powder, or a crystalline polyolefin modified with an unsaturated carboxylic acid or its anhydride. Various types of materials are used, such as those made of amorphous polymers or those made of a multilayer structure in which two or more types of resins having different glass transition temperatures are laminated.
〔発明が解決しようとする問題点］
上記のような制振材料は、制振性能だけではなく、曲げ
、絞り加工等の加工性や金属板への接着強度も要求され
る。しかしながら、上記のような制振材料は、加工性や
金属への接着強度を向上させると制振性が低下し、逆に
制振性を向上させると加工性や接着性が低下するという
ように全性能をバランスよく充足するものが得られない
という問題や、使用する樹脂組成物のガラス転移温度が
高いため、制振用複合金属板が一般に使用される室温領
域において、充分な制振性を発揮することができないと
いう問題を生している。[Problems to be Solved by the Invention] The above-mentioned vibration damping materials are required not only to have damping performance, but also to have workability such as bending and drawing, and adhesive strength to metal plates. However, with the above-mentioned vibration damping materials, improving the workability or adhesion strength to metal reduces the damping property, and conversely, improving the damping property reduces the workability and adhesion. Due to the problem of not being able to obtain a product that satisfies all performance requirements in a well-balanced manner and the glass transition temperature of the resin composition used, it is difficult to obtain sufficient vibration damping properties in the room temperature range where vibration damping composite metal plates are generally used. This creates the problem of not being able to perform to the best of its ability.
このため、本発明者らは、室温領域での制振性および加
工性等が著しく向上する割振用接着シートを開発し、こ
れをすでに出願（昭和６３年４月３０日）している。す
なわち、この制振用接着シートは、制振層と、この制振
層の上下両面に貼着された金属板接合用のホットメルト
系接着層との３層構造に形成されている。そして、金属
板に接着するホットメルト系接着層を、熱変形温度が２
００℃以下のポリアミド系重合体もしくはポリアミド系
共重合体で構成することによりある程度の剛性をもたせ
て金属板との接着強度を向上させるとともに、上記ホッ
トメルト系接着層に挟持される制振層をガラス転移温度
が２０℃以下のアクリル酸エステルもしくはメタアクリ
ル酸エステル系重合体で構成し室温領域において優れた
制振性を発揮しうるようにしている。しかしながら、こ
の制振用接着シートは、三層構造であるため製造が煩雑
であり、またコスト的にも改善の余地がある。For this reason, the present inventors have developed an adhesive sheet for distribution that has significantly improved damping properties and workability in the room temperature range, and have already filed an application for this (April 30, 1988). That is, this vibration-damping adhesive sheet has a three-layer structure including a vibration-damping layer and hot-melt adhesive layers for bonding metal plates attached to both upper and lower surfaces of the vibration-damping layer. The hot melt adhesive layer that adheres to the metal plate has a heat deformation temperature of 2.
By being composed of a polyamide polymer or polyamide copolymer with a temperature of 00°C or less, it has a certain degree of rigidity and improves the adhesive strength with the metal plate, and the damping layer sandwiched between the hot melt adhesive layers. It is made of an acrylic ester or methacrylic ester polymer with a glass transition temperature of 20° C. or less, so that it can exhibit excellent vibration damping properties in the room temperature range. However, since this vibration damping adhesive sheet has a three-layer structure, manufacturing is complicated, and there is still room for improvement in terms of cost.
この発明は、このような事情に鑑みなされたもので、室
’ｔｌＡ ｅＪｆ域において優れた制振性を発揮しうる
とともに、金属板に対して優れた接着性を有し、しかも
構造が簡単な制振用接着シートの提供をその目的とする
。This invention was made in view of the above circumstances, and it is capable of exhibiting excellent vibration damping properties in the chamber 'tlA eJf region, has excellent adhesion to metal plates, and has a simple structure. The purpose is to provide an adhesive sheet for vibration damping.
上記の目的を達成するため、この発明の制振用接着シー
トは、ガラス転移温度が２０℃以下の高分子弾性体シー
ト内に、有機質短繊維状材を分散含有させたという構成
をとる。In order to achieve the above object, the vibration damping adhesive sheet of the present invention has a structure in which an organic short fibrous material is dispersed in an elastic polymer sheet having a glass transition temperature of 20° C. or less.
〔作用］
すなわち、本発明者は、前記出願から継続して研究を重
ねた結果、制振用接着シートが室温領域において優れた
制振性および接着性を発揮するためには、やはり制振用
接着シートをガラス転移温度（以下Ｔｇと記す）が２０
℃以下の高分子弾性体で構成することが必要であること
を確認した。[Function] That is, as a result of continued research since the above application, the present inventors have discovered that in order for a vibration damping adhesive sheet to exhibit excellent vibration damping properties and adhesive properties in the room temperature range, it is necessary to The adhesive sheet has a glass transition temperature (hereinafter referred to as Tg) of 20
It was confirmed that it is necessary to be constructed of an elastic polymer material with a temperature below ℃.
そして、制振用接着シートの構造を簡素化するためには
、上記Ｔｇが２０℃以下の高分子弾性体を基本とし、こ
れの接着性を向上させることが効果的であると着想して
、一連の研究を行った。その結果、Ｔｇが２０″Ｃ以下
の高分子弾性体内に、有機質短繊維状材（この発明でい
う短繊維とは長さが２０μｍ以下のことをいう）を分布
形成させると、上記高分子弾性体の室温領域における制
振性を損なうことなく接着性を付与することが可能にな
ることを見出しこの発明に到達した。In order to simplify the structure of the vibration-damping adhesive sheet, we thought that it would be effective to use an elastic polymer material with the Tg of 20°C or less and improve its adhesiveness. A series of studies were conducted. As a result, when organic short fibrous materials (short fibers in this invention refer to lengths of 20 μm or less) are formed in a distributed manner in an elastic polymer body having a Tg of 20″C or less, the elastic polymer material The present invention was achieved by discovering that it is possible to impart adhesive properties without impairing vibration damping properties in the room temperature region of the body.
つぎに、この発明の詳細な説明する。Next, this invention will be explained in detail.
図面は、この発明の制振用接着シートを用いた制振用複
合鋼板を示している。すなわち、図において、ｌはＴｇ
が２０℃以下の高分子弾性体からなるシートであり、内
部に、長さが１５μｍ以下の有機質短繊維状材２が均一
に分散されている。The drawing shows a vibration damping composite steel plate using the vibration damping adhesive sheet of the present invention. That is, in the figure, l is Tg
It is a sheet made of an elastic polymer having a temperature of 20° C. or less, and short organic fibrous materials 2 having a length of 15 μm or less are uniformly dispersed inside.
このシート１は、高分子弾性体１００重量部（以下「部
」と略す）に対して２０部の繊維状材２を混合して構成
されている。３はそれぞれシート１の上下両面に貼着さ
れた鋼板であり、シート１を挟持した状態で加熱・加圧
されることによりシート１と接合して制振用複合鋼板を
形成している。This sheet 1 is constructed by mixing 20 parts of the fibrous material 2 with 100 parts by weight (hereinafter abbreviated as "parts") of the polymeric elastic material. Steel plates 3 are attached to both the upper and lower surfaces of the sheet 1, and are bonded to the sheet 1 by being heated and pressurized while sandwiching the sheet 1, thereby forming a vibration-damping composite steel plate.
上記シート１においては、高分子弾性体のＴｇが２０℃
以下であることを要し、高分子弾性体のＴｇが２０℃以
上になると室温領域において充分な制振機能を発揮でき
なくなる。すなわち、充分な制振機能を発揮するために
は、シート１が振動を吸収できる程度の柔らかさを有し
ていなければならないが、高分子弾性体のＴｇが２０℃
以上になると常温においてのシート１の硬度が大きくな
りすぎ、振動の吸収ができなくなるからである。In the above sheet 1, the Tg of the polymer elastic body is 20°C.
If the Tg of the elastic polymer body exceeds 20° C., it will not be able to exhibit a sufficient vibration damping function in the room temperature range. In other words, in order to exhibit a sufficient vibration damping function, the sheet 1 must be soft enough to absorb vibrations, but the Tg of the elastic polymer material must be 20°C.
This is because, if the hardness exceeds that level, the hardness of the sheet 1 at room temperature becomes too large, making it impossible to absorb vibrations.
また、高分子弾性体のＴｇが、−３０’Ｃ以下になると
、常温においてシート１が柔らかすぎて、鋼板３を積層
状にする際に、加圧により２枚の鋼板３の間からシート
１がはみ出たり、積層状の網板３が互いに位置ずれしや
すくなる。したがって、高分子弾性体のＴｇは下限を一
３０゛ｃに設定することが好ましい。Furthermore, if the Tg of the polymer elastic body is -30'C or less, the sheet 1 will be too soft at room temperature, and when the steel plates 3 are laminated, the sheet 1 will be inserted between the two steel plates 3 by pressure. The mesh plates 3 are likely to protrude or the laminated mesh plates 3 may be easily displaced from each other. Therefore, it is preferable to set the lower limit of the Tg of the elastic polymer to -30°C.
上記高分子弾性体としては、アクリル酸エステル系重合
体、すなわち、炭素数ｎが２〜１２の（メタ）アクリル
酸エステルの重合体、または炭素数ｎが２〜１２の（メ
タ）エチルアクリル酸エステルの共重合体があげられる
。この場合、炭素数ｎが２〜１２の（メタ）エチルアク
リル酸エステルの共重合体としては、炭素数ｎが２〜１
２の（メタ）エチルアクリル酸エステルと、これと共重
合可能なビニル基を有する単量体との共重合体があげら
れ、特に、官能基を有するアクリル酸やアクリル酸エス
テルを用いることができる。その具体的な例としては、
メタアクリル酸、２−エチルヒドロキシアクリレート、
エチルアクリレートｎ−ブチルアクリレート イソブチ
ルアクリレート、２−エチルへキシルアクリレ−１・、
メチルメタアクリレ−１・５ エチルメタアクリレー
ト、ｎブチルメタアクリレート、イソブチルメタアクリ
レート ターシャリ−ブチルメタアクリレート。The above-mentioned polymeric elastomer is an acrylic ester polymer, that is, a polymer of (meth)acrylic ester having a carbon number n of 2 to 12, or a (meth)ethyl acrylic acid polymer having a carbon number n of 2 to 12. Examples include ester copolymers. In this case, as a copolymer of (meth)ethyl acrylic acid ester having a carbon number n of 2 to 12, a carbon number n of 2 to 1
Examples include copolymers of (meth)ethyl acrylic acid ester (2) and a monomer having a vinyl group that can be copolymerized with the copolymer, and in particular, acrylic acid or acrylic ester having a functional group can be used. . A specific example is:
methacrylic acid, 2-ethylhydroxyacrylate,
Ethyl acrylate n-butyl acrylate isobutyl acrylate, 2-ethylhexyl acrylate-1,
Methyl methacrylate 1.5 Ethyl methacrylate, n-butyl methacrylate, isobutyl methacrylate tertiary-butyl methacrylate.
ラウリルメタアクリレ−１−、グリシジルメタアクリレ
ート等がある。また、上記のようなアクリル酸エステル
だけでは充分な凝集力が得られないときは、凝集力を向
上させるために、過酸化物、イソシアネートメラミン等
の化学的架橋剤を用いて上記アクリル酸エステルを架橋
させることもできる。また、上記アクリル酸エステル系
重合体に代えて、もしくはそれとともに、上記Ｔｇ値を
有する合成ゴム、天然ゴム等のゴム成分材料を使用する
ことも可能である。この場合、鋼板に対する接着性を高
めるため、上下両面に接着剤を塗布してもよい。Examples include lauryl methacrylate-1-, glycidyl methacrylate, and the like. In addition, if sufficient cohesive force cannot be obtained with the above acrylic ester alone, in order to improve the cohesive force, the above acrylic ester may be mixed with a chemical crosslinking agent such as peroxide or isocyanate melamine. It can also be crosslinked. Furthermore, instead of or together with the acrylic acid ester polymer, it is also possible to use a rubber component material such as synthetic rubber or natural rubber having the above Tg value. In this case, adhesive may be applied to both the upper and lower surfaces in order to improve adhesion to the steel plate.
上記有機質短繊維状材２としては、レーヨンビニロン、
ステイブルファイハー、綿糸、ポリエステル繊維、ポリ
アミド繊維等の樹脂が使用できる。このような有機質短
繊維状材２の使用により高分子弾性体シート１の接着性
が向上するのは、上記繊維状材２により上記シート１が
補強されて適正な硬度になるからと考えられる。長繊維
状材を使用すると、逆に接着性は低下する。そして、上
記有機質短繊維状材２としては、１５０″Ｃ以下の温度
では溶融しないものを使用する。これは、一般に、シー
ト１を鋼板３に貼着する際の加熱温度が１５０℃以下で
あり、この加熱温度で繊維状材２が溶融し繊維状を保持
できなくなると、接着性向上効果が充分に得られなくな
るからである。As the organic short fibrous material 2, rayon vinylon,
Resins such as stable fibers, cotton yarn, polyester fibers, and polyamide fibers can be used. The reason why the adhesiveness of the polymer elastic sheet 1 is improved by using such short organic fibrous material 2 is thought to be that the sheet 1 is reinforced by the fibrous material 2 and has an appropriate hardness. On the contrary, when a long fiber material is used, the adhesion is reduced. The organic short fibrous material 2 used is one that does not melt at a temperature of 150"C or lower. This is because the heating temperature when attaching the sheet 1 to the steel plate 3 is generally 150"C or lower. This is because, if the fibrous material 2 melts at this heating temperature and is no longer able to maintain its fibrous shape, the effect of improving adhesion cannot be sufficiently obtained.
また、繊維状材２の長さは、２０μｍ以下であることが
好ましく、より好ましいのは１０μｍ以下である。この
ような繊維状材２は、シート１において、前記高分子弾
性体１００部に対して、２〜３５部配合される。この繊
維状材２の配合比が３５部を超えると、繊維状材２が表
面に多数露呈しシート１の高分子弾性体と鋼板３の接触
面積が小さくなって接着強度が低下し、２部未満になる
とシート１自身の硬度が小さ（なり（凝集力が低下し）
加圧時に端部が鋼板からはみ出すようになるしたがって
、上記繊維状材２は２〜３５部配合されることが好まし
く、より好ましいのは、５〜１５部配合されることであ
る。Further, the length of the fibrous material 2 is preferably 20 μm or less, more preferably 10 μm or less. In the sheet 1, 2 to 35 parts of such fibrous material 2 are blended with respect to 100 parts of the polymer elastic body. If the blending ratio of the fibrous material 2 exceeds 35 parts, a large amount of the fibrous material 2 will be exposed on the surface, and the contact area between the elastic polymer material of the sheet 1 and the steel plate 3 will become small, resulting in a decrease in adhesive strength. If the hardness is less than that, the hardness of the sheet 1 itself becomes small (the cohesive force decreases).
Therefore, the fibrous material 2 is preferably blended in an amount of 2 to 35 parts, more preferably 5 to 15 parts, because the end portion protrudes from the steel plate when pressurized.
上記高分子弾性体と繊維状材２とで構成されるシート１
は、厚みをＯ，ＯＯ５〜０．５ ｍｍに設定することが
好ましい。シート１の厚みが０．００５ｍｍ以下になる
と繊維状材２をシート１内に均一状態で分散させること
が困難になり、鋼板３との接着力が低下する。その結果
、使用中に鋼板３との自然剥離を生しるおそれもでてく
る。また、シートの厚みが０．５ ｍｍ以上になると、
綱板３と共に割振用複合鋼板を製造する際、制振用複合
鋼板全体の厚みに対するシート１の厚みの割合が大きく
なり、制振用複合鋼板の後加工がしにく（なる。したが
って、ソート１の厚みは、先に述べたように、０゜００
５〜０．５皿に設定することが好ましく、特に、好まし
いのは０．０２〜０．１ ｍｍである。Sheet 1 composed of the above-mentioned elastic polymer body and fibrous material 2
The thickness is preferably set to 5 to 0.5 mm. When the thickness of the sheet 1 is less than 0.005 mm, it becomes difficult to uniformly disperse the fibrous material 2 within the sheet 1, and the adhesive force with the steel plate 3 decreases. As a result, there is a risk of natural separation from the steel plate 3 during use. In addition, when the thickness of the sheet is 0.5 mm or more,
When manufacturing a composite steel plate for vibration damping together with the steel plate 3, the ratio of the thickness of the sheet 1 to the thickness of the entire composite steel plate for vibration damping increases, making it difficult to perform post-processing of the composite steel plate for vibration damping. As mentioned earlier, the thickness of 1 is 0°00
It is preferable to set the thickness to 5 to 0.5 mm, and particularly preferably 0.02 to 0.1 mm.
なお、上記シート１を構成する高分子弾性体には、粘着
付与剤や可塑剤、フィラー、エラストマー等の添加剤を
混合することにより、さらに、接着強度を向上させるこ
とが可能である。また、シート１と鋼板３で構成される
制振用複合鋼板の溶接性や塗装性を改良するために、高
分子弾性体に、カーボンブラックや金属微粒子等の導電
性フィラーを混合して導電性を付与したり、三酸化アン
チモン、水酸化アルミニウム等の難燃化剤を混合して難
燃性を改良することもできる。Note that the adhesive strength can be further improved by mixing additives such as tackifiers, plasticizers, fillers, and elastomers into the polymeric elastic body constituting the sheet 1. In addition, in order to improve the weldability and paintability of the vibration-damping composite steel plate composed of the sheet 1 and the steel plate 3, conductive fillers such as carbon black and metal particles are mixed into the polymer elastic body to make it conductive. The flame retardance can also be improved by adding a flame retardant such as antimony trioxide or aluminum hydroxide.
つぎに、実施例について説明する。Next, examples will be described.
〔実施例１］
エチルアクリレート７０部、ブチルアクリレート３０部
、アクリル酸１０部の組成比からなる材料を、公知の乳
化剤や重合開始剤を用いエマルジョン重合させてアクリ
ルポリマーとし、このアクリルポリマー１００部に対し
て、長さが１０μｍの繊維状レーヨンを１０部添加して
均一状態に混合した。そして、この混合物を離型紙上に
流延したのち乾燥させて厚みが５０μｍのフィルムに形
成した。なお、上記アクリルポリマーのＴｇは２℃であ
った。[Example 1] A material consisting of 70 parts of ethyl acrylate, 30 parts of butyl acrylate, and 10 parts of acrylic acid was subjected to emulsion polymerization using a known emulsifier and polymerization initiator to obtain an acrylic polymer. To the mixture, 10 parts of fibrous rayon having a length of 10 μm was added and mixed uniformly. Then, this mixture was cast onto release paper and dried to form a film having a thickness of 50 μm. Note that the Tg of the acrylic polymer was 2°C.
〔実施例２〕
エチルアクリレート８０部、２−エチルへキシルアクリ
レート２０部、アクリル酸５部の組成比からなる材料を
、公知の溶剤２重合開始剤を用いてエマルジョン重合さ
せ、さらに、これの１００部に対して、グラフト化した
スチレンを２０部混合してアクリルポリマーを得た。そ
して、このアクリルポリマー１００部に対して、長さが
２５μｍの繊維状レーヨンを２５部添加して均一状態に
混合したのち、この混合物を離型紙上に流延し乾燥させ
て厚みが５０μｍのフィルムに形成した。[Example 2] A material consisting of 80 parts of ethyl acrylate, 20 parts of 2-ethylhexyl acrylate, and 5 parts of acrylic acid was subjected to emulsion polymerization using a known solvent 2 polymerization initiator, and then 100 parts of this 20 parts of grafted styrene was mixed to obtain an acrylic polymer. Then, to 100 parts of this acrylic polymer, 25 parts of fibrous rayon with a length of 25 μm was added and mixed uniformly, and then this mixture was cast onto release paper and dried to form a film with a thickness of 50 μm. was formed.
なお、上記アクリルポリマーのＴｇは１８℃であった。Note that the Tg of the acrylic polymer was 18°C.
（実施例３）
実施例１と同様にしてアクリルポリマーをつくり、これ
の１００部に対して、長さが１０μｍの繊維状レーヨン
を４０部添加した。それ以外は実施例１と同様にしてフ
ィルムを得た。(Example 3) An acrylic polymer was prepared in the same manner as in Example 1, and 40 parts of fibrous rayon having a length of 10 μm was added to 100 parts of the polymer. A film was obtained in the same manner as in Example 1 except for this.
〔実施例４〕
メタアクリル酸メチル６０部、メタアクリル酸ブチル３
０部、アクリル酸１０部の組成からなる材料を公知の溶
剤２重合開始剤を用いてエマルジョン重合させてアクリ
ルポリマーとし、このアクリルポリマー１００部に対し
て、長さが１０μｍの繊維状レーヨンを１０部添加して
均一状態に混合した。そして、この混合物を雌型紙上に
流延したのち、乾燥させて厚みが５０μｍのフィルムに
形成した。なお、上記アクリルポリマーのＴｇは８６℃
であった。[Example 4] 60 parts of methyl methacrylate, 3 parts of butyl methacrylate
A material consisting of 0 parts of acrylic acid and 10 parts of acrylic acid is subjected to emulsion polymerization using a known solvent 2 polymerization initiator to obtain an acrylic polymer, and 10 parts of fibrous rayon with a length of 10 μm is added to 100 parts of this acrylic polymer. 100% was added and mixed to a homogeneous state. Then, this mixture was cast onto a female pattern paper, and then dried to form a film having a thickness of 50 μm. Furthermore, the Tg of the above acrylic polymer is 86°C.
Met.
〔比較例］
繊維状レーヨンを使用しない以外は実施例１と同様にし
てフィルムを得た。[Comparative Example] A film was obtained in the same manner as in Example 1 except that fibrous rayon was not used.
上記実施例および比較例により得られたフィルムについ
て、以下に述べる試験を１テつだ。その結果を表に示す
。The films obtained in the above Examples and Comparative Examples were subjected to one test described below. The results are shown in the table.
（試験１）
Ｔ字剥離強度測定
鋼板として厚みが０．４ ｍｍの電気亜鉛メツキ鋼板を
２枚用い、この２枚の鋼板間に、上記フィルムを配設し
て重ね合わせ、その状態で加熱・接着し、テンシロン型
万能引張り試験機を用いて上記２枚の鋼板を互いに接合
面に対して反対方向に５０ｆｆｌｌＩｌｌＺ分の引張り
スピードで引張りＴ字剥離強度（ｋｇ／２０ｎｖｎ）を
測定した。(Test 1) Two electrolytic galvanized steel plates with a thickness of 0.4 mm were used as T-peel strength measurement steel plates, and the above film was placed between the two steel plates, overlapped, and heated and heated in that state. After adhering, the two steel plates were stretched using a Tensilon universal tensile testing machine in opposite directions to the joint surface at a tensile speed of 50 ffllllllz to measure the T-peel strength (kg/20 nvn).
（試験２）
剪断強度測定
鋼板として厚みが０．８ ｍｍの電気亜鉛メツキ鋼板を
２枚用い、この２枚の鋼板間に、上記フィルムを配設し
て重ね合わせ、その状態で加熱・接着し、テンシロン型
万能引張り試験機を用いて上記２枚の鋼板を互いに反対
方向にスライド移動させるように５０ｍｍ／分の引張り
スピードで引張り剪断強度（ｋｇ／ｃｆｆｌ）を測定し
た。(Test 2) Two electrogalvanized steel plates with a thickness of 0.8 mm were used as shear strength measurement steel plates, and the above film was placed between the two steel plates, overlapped, and heated and bonded in that state. The tensile shear strength (kg/cffl) was measured using a Tensilon universal tensile testing machine at a tensile speed of 50 mm/min while sliding the two steel plates in opposite directions.
（試験３）
損失係数ηの測定
厚みが０．８ ｍｍの２枚の電気亜鉛メツキ鋼板間に、
上記フィルムを重ね合わせて加熱・接着し、これに１０
００ ｃ ／ ｓの振動を与えた状態で温度を変化させ
、その際の振動損失係数の最大値ηｍａｘおよびその時
の温度を求めた。(Test 3) Measurement of loss coefficient η Between two galvanized steel plates with a thickness of 0.8 mm,
The above films are overlapped and heated and bonded, and then
The temperature was varied while a vibration of 0.00 c/s was applied, and the maximum value ηmax of the vibration loss coefficient at that time and the temperature at that time were determined.
（以下余白）
上記表から明らかなように、実施例のものは比較例のも
のに比べて室温領域において、Ｔ字剥離強度や剪断強度
が優れていることが認められる。(The following is a blank space) As is clear from the above table, it is recognized that the samples of the Examples are superior in T-peel strength and shear strength in the room temperature region compared to the samples of the Comparative Examples.
なお、実施例３，４は有機質短繊維状材の使用量が、そ
れぞれ好適な範囲から外れているため、性能的には実施
例１，２よりも劣るが、それでも比較例よりはるかに優
れていることがわかる。In addition, in Examples 3 and 4, the amount of organic short fibrous material used was outside the respective preferred ranges, so the performance was inferior to Examples 1 and 2, but it was still far superior to the comparative example. I know that there is.
以上のように、この発明の制振用接着シートは、Ｔｇが
２０’Ｃ以下の高分子弾性体シート内に、有機質短繊維
状材を分布含有させた一層で構成されているため、構造
が簡単で安価であるうえ、室温領域において優れた制振
性を有し、しかも鋼板等に対する接着性が向上している
。したがって、２枚の鋼板間にこの発明の制振用接着シ
ートを配設しその状態で加熱・加圧することにより一動
作で強固に２枚の鋼板を接合し制振用複合板化しうるよ
うになる。As described above, the vibration damping adhesive sheet of the present invention is composed of a single layer in which organic short fibrous material is distributed in a polymer elastic sheet having a Tg of 20'C or less, so that the structure is It is simple and inexpensive, has excellent vibration damping properties in the room temperature range, and has improved adhesion to steel plates and the like. Therefore, by placing the vibration damping adhesive sheet of the present invention between two steel plates and applying heat and pressure in that state, it is possible to firmly join the two steel plates in one action to form a vibration damping composite plate. Become.
図面ばこの発明の制振用接着シートの断面図である。 Ｉ・・・シート ２・・・繊維状材 ３・・・鋼板 特許出願人 日東電気工業株式会社 代理人 弁理士 西 藤 征 彦 FIG. 1 is a cross-sectional view of a damping adhesive sheet of the invention. I... Sheet 2...Fibrous material 3... Steel plate Patent applicant: Nitto Electric Industry Co., Ltd. Agent: Patent Attorney Yukihiko Nishifuji
Claims (4)
ト内に、有機質短繊維状材を分散含有させたことを特徴
とする制振用接着シート。(1) An adhesive sheet for vibration damping, characterized in that an organic short fibrous material is dispersed and contained in an elastic polymer sheet having a glass transition temperature of 20° C. or less.
維状材が２〜３５重量部配合されている請求項（１）記
載の制振用接着シート。(2) The vibration damping adhesive sheet according to claim (1), wherein 2 to 35 parts by weight of the short organic fibrous material is blended with 100 parts by weight of the polymeric elastic material.
ある請求項（１）または（２）記載の制振用接着シート
。(3) The vibration damping adhesive sheet according to claim 1 or 2, wherein the polymeric elastomer is an acrylic ester polymer.
属板に対して接着性を発揮する請求項（１）ないし（３
）記載の制振用接着シート。(4) Claims (1) to (3) wherein the material is interposed between two metal plates and exhibits adhesive properties to both metal plates when heated and pressurized.
) vibration damping adhesive sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19664888A JPH0245581A (en) | 1988-08-05 | 1988-08-05 | Adhesive sheet for vibration damping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19664888A JPH0245581A (en) | 1988-08-05 | 1988-08-05 | Adhesive sheet for vibration damping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0245581A true JPH0245581A (en) | 1990-02-15 |
Family
ID=16361271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19664888A Pending JPH0245581A (en) | 1988-08-05 | 1988-08-05 | Adhesive sheet for vibration damping |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0245581A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6164416A (en) * | 1984-09-06 | 1986-04-02 | Sony Corp | Injection forming method |
| JP2001081435A (en) * | 1999-09-09 | 2001-03-27 | Polymatech Co Ltd | Heat conducting adhesive and its production and electronic part |
-
1988
- 1988-08-05 JP JP19664888A patent/JPH0245581A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6164416A (en) * | 1984-09-06 | 1986-04-02 | Sony Corp | Injection forming method |
| JPH0549448B2 (en) * | 1984-09-06 | 1993-07-26 | Sony Corp | |
| JP2001081435A (en) * | 1999-09-09 | 2001-03-27 | Polymatech Co Ltd | Heat conducting adhesive and its production and electronic part |
| JP4709339B2 (en) * | 1999-09-09 | 2011-06-22 | ポリマテック株式会社 | Thermally conductive adhesive, bonding method, and electronic component |
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