JP4251478B2 - Application method of coating type damping paint - Google Patents
Application method of coating type damping paint Download PDFInfo
- Publication number
- JP4251478B2 JP4251478B2 JP2002375865A JP2002375865A JP4251478B2 JP 4251478 B2 JP4251478 B2 JP 4251478B2 JP 2002375865 A JP2002375865 A JP 2002375865A JP 2002375865 A JP2002375865 A JP 2002375865A JP 4251478 B2 JP4251478 B2 JP 4251478B2
- Authority
- JP
- Japan
- Prior art keywords
- coating
- damping
- mass
- resin emulsion
- foaming
- 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.)
- Expired - Lifetime
Links
Description
【０００１】
【発明の属する技術分野】
本発明は、自動車等に塗布される塗布型制振材に関する。
【０００２】
【従来の技術】
自動車のフロア部、ドア、ダッシュパネル等には、制振性を付与する目的で、アスファルト系の制振シートが貼付、若しくは加熱融着されている。これらのシートは適用部分に合わせてトリム加工され、必要に応じて貼付面に粘着加工を施して、貼付され、又は載置され、自動車の塗装乾燥炉における熱によりアスファルト成分が軟化溶融し、鋼板に融着する。
【０００３】
これらの制振シートは、十分な制振性を有するものであるが、シートを必要形状に加工するための工程が増加したり、トリム加工の際に裁断屑が発生し、歩留まりが低下する等の欠点がある。また、施工段階においては、自動車の必要部分への取付作業は人手に頼らざるを得ず、自動化・省人化の障害となっている。このため、制振シートに代わるものとして制振塗料が開発され、既に実用化されており、本出願人の出願による特開平７−１４５３３１号には、加熱膨張型有機中空状充填材、若しくは有機発泡剤を含む水系塗料が開示されている。
【０００４】
上記発明においては、樹脂として水溶性樹脂、水分散型樹脂、エマルション型樹脂を使用する構成となっている。これらの水系樹脂による塗料は、溶剤形塗料と異なり、焼付乾燥の際に塗料から発生する有毒なガスがなく、近年注目されている環境問題に対して影響の少ない塗料である。
【０００５】
しかしながら、これらの水系塗料、特にエマルション型樹脂を使用したエマルション塗料は、加熱乾燥の条件に問題がある。これは、例えば長期休暇などで製造ラインが停止することがある自動車メーカーでは、エマルション塗料の塗装後、加熱乾燥前にライン停止によって長時間滞留する等の場合に、その後に加熱乾燥を行った際に塗膜表面にフクレと呼ばれる塗膜欠陥が発生する、という問題を内在しているのが現状である。このため、本出願人は更に研究を進め、長期滞留等があった場合にも塗膜欠陥が発生しない塗布型の制振材の発明を行い、特開２０００−８６９３６号に詳細が開示されている。
【０００６】
以上の一連の研究開発により、単層による塗布型制振材が開発されたが、更なる制振性の向上による、塗布適用部位の拡大などに向けて、従来と異なる視点からの施工方法、及び塗布材料の開発を実施している。
【０００７】
【発明が解決しようとする課題】
そこで本発明は、コストアップに繋がる配合変更を行なうことなしに、塗布された面の制振性が著しく向上する塗布型制振材の施工方法、及びこの施工方法用の塗布材の開発を課題とする。
【０００８】
【課題を解決するための手段】
かかる課題を解決せんとして、本発明者らは鋭意研究の結果、コストアップに繋がる配合変更をせず、制振性の向上を実現した塗布型制振材の施工方法、及びこの施工方法用の塗布材の開発に成功したものであり、しかして本発明の要旨は、以下に存する。
【０００９】
ＨＬＢが１０〜２０である乳化剤を１〜３質量％含有し、消泡剤を含有せず、起泡剤を含有してなる樹脂エマルションを主成分とし、該樹脂エマルションを５０〜７５質量％配合してなる塗布型制振塗料を、高速攪拌発泡によって発泡状態とした後、必要な箇所へスリットノズルを用いて塗布することを特徴とする塗布型制振塗料の施工方法。
ＨＬＢが１０〜２０である乳化剤を１〜３質量％含有し、消泡剤を含有せず、起泡剤を含有してなる樹脂エマルションを主成分とし、該樹脂エマルションを５０〜７５質量％配合してなる塗布型制振塗料を、塗装ガンの手元、あるいはノズル付近において、不活性ガスや空気と衝突混合させる方法により必要な箇所へ塗布することを特徴とする塗布型制振塗料の施工方法。
以下に詳細に説明する。
【００１０】
本発明になる塗布型制振材の主成分は、樹脂エマルションからなるエマルション塗料である。樹脂エマルションとしては、酢酸ビニル樹脂エマルション、酢酸ビニル共重合樹脂エマルション、エチレン／酢酸ビニル共重合樹脂エマルション（ＥＶＡ）、アクリル樹脂系エマルション、アクリル／スチレン共重合樹脂エマルション、その他重合型（フッ素樹脂含有、シリコン樹脂含有、塩化ビニリデン樹脂等）エマルション、ソープフリー、コア−シェル型、水溶性ポリマー混合型、架橋型等の機能性エマルションが例示でき、また、アルキド樹脂エマルション、ウレタン樹脂エマルション等、分散法により製造されるエマルションも使用することができる。
【００１１】
乳化重合により製造されるエマルションは、モノマーに、保護コロイド乳化剤、水、重合触媒を加えて、加熱により乳化重合させて得られたエマルションポリマーに、可塑剤、または変性剤を混合させてエマルションとする。
【００１２】
本発明の塗布型制振材に使用するエマルションは、上記のエマルションの乳化重合時に使用する乳化剤（界面活性剤）を、ＨＬＢ１０〜２０であるものを、１〜３質量％含有する。ＨＬＢとは、Hydrophile-Lipophile Balance で、親水性と親油性のバランスを、０〜２０の数値であらわすものである。親水基を全く持たない乳化剤の場合にはＨＬＢ＝０であり、親水基ばかりで親油基を全く持たない乳化剤の場合にはＨＬＢ＝２０となる。ＨＬＢ＝１０〜２０の範囲の乳化剤が、１〜３質量％含有され乳化重合されたエマルションであれば、後述する物理的手段による起泡が非常に容易である。
【００１３】
本発明の塗布型制振材に使用する樹脂エマルションには、造膜時に塗膜欠陥の発生を防止するために、通常加える消泡剤を添加しないことが好ましい。一般に樹脂エマルションに使用される消泡剤には、鉱油をベースに脂肪酸エステル、高級脂肪酸金属石けん、有機りん化合物等を配合してなる鉱油系消泡剤、ジメチルシリコン、ポリエーテル変性シリコン、疎水性シリカシリコンコンパウンド等のシリコン系消泡剤があるが、いずれも添加しないことが好ましい。
【００１４】
あるいは、樹脂エマルションに起泡剤を必要量添加することが好ましい。一般に樹脂エマルションに使用される起泡剤には、セッケン、ドデシルベンゼンスルホン酸ナトリウム、ラウリルアルコール硫酸エステルナトリウム、ラウリルエーテル硫酸エステルナトリウム等のアニオン界面活性剤が使用される。起泡剤の添加量は、後述する物理的手段による起泡の方法により決められる。
【００１５】
本発明に使用する樹脂エマルションにおける、消泡剤と起泡剤との関係、即ち、消泡剤と起泡剤の添加パターンとしては、▲１▼消泡剤＝無・起泡剤＝無、▲２▼消泡剤＝有・起泡剤＝有、▲３▼消泡剤＝無・起泡剤＝有の３パターンが実施可能である。後述する、物理的に樹脂エマルション塗料を容易かつ大きな発泡倍率で発泡させる効果は、▲１▼＜▲２▼＜▲３▼の順で大きい。
【００１６】
なお、一般に樹脂エマルション塗料は、樹脂エマルションと顔料との比率でみると、顔料の配合が大きい。重量比で５０％程度が顔料となることが多い。これはスプレーなどの塗装作業性の確保や塗面の仕上がり性による。しかし、本発明の様な塗布型制振材の場合、樹脂割合を大きくした方が、制振性能に代表される塗膜物性値が向上する。そこで、本発明においては、後述する、樹脂エマルション塗料を物理的に発泡させるため、塗装作業性を劣化させることなく、配合上の樹脂割合、重量比で７５％まで大きくすることができ、制振性能を大きく向上することに寄与している。
【００１７】
本発明の塗布型制振材に配合する顔料としては、炭酸カルシウム、硫酸バリウム、クレイ、タルク、マイカ等一般に樹脂エマルション塗料に配合される顔料類が使用できる。
【００１８】
本発明の塗布型制振材は、反応により発泡する発泡剤を添加することなしに、塗布する以前に物理的手段をもって発泡させることを必須とする。なお、発泡剤を添加しなくても本発明は実施可能であるが、発泡剤の併用に関しても可能である。また、物理的手段をもって発泡させた泡を長時間維持する目的で、泡安定剤、あるいはステアリン酸アンモニウム等の整泡剤を添加することは非常に好ましい。
【００１９】
物理的手段による発泡としては、羽型攪拌機による高速攪拌発泡、密閉容器に高速気流を注入することによる発泡、密閉容器を激しく振動させることによる発泡等が例示できる。
【００２０】
前記は、塗布型制振材を塗装機に送る前段階で、物理的手段をもって発泡させる方法であるが、これとは別に、加圧スプレー塗装機により本発明になる塗布型制振材を塗布する際に、塗装ガンの手元、あるいはノズル付近において、不活性ガスや空気と衝突混合させて発泡させる方法をとることも可能である。これによれば、塗装の直前に物理的手段により発泡させることになる。
【００２１】
塗布前、あるいは直前に発泡させた、本発明になる塗布型制振材を必要な面に塗装するには、特に限定はなく、従来公知の各種塗装法が使用できるが、物理的に発泡させた泡を出来る限り保持して塗装することが望ましい。エアレススプレー法であれば、一般的なノズルチップによる方法も可能であるが、スリットノズルによる塗装であれば、泡の保持にはより好ましい。その他、スワール式ノズル等も可能である。
【００２２】
なお、本発明になる塗布型制振材を、コンピュータ制御による塗装ロボットにより塗装させることも可能であり、この場合には塗装作業における無人化が実現できる。
【００２３】
本発明になる制振材は、自動車のフロア部、ダッシュパネル、トランクルーム、ドア、ルーフパネル等、従来シート状制振材が貼着使用されていた部位に、シート状制振材に代わって塗布乾燥することにより、高い制振性を得ることができる。また、塗布型であることから、自動車の床裏部に塗装することも可能であり、塗膜の柔軟性、可撓性により充分な耐チッピング性を付与することが可能であれば、従来床裏部に塗装されている塩化ビニル系、アクリル系等のアンダーボディコートと共通化することが可能である。自動車以外にも、鉄道車両、船舶等の輸送機械、各種の産業機械、建築、構築物に塗装により容易に制振性を付与することが可能である。
【００２４】
【発明の実施の形態】
本発明の理解に供するため、以下に実施例を記載する。いうまでもなく、本発明は以下の実施例に限定されるものではない。
【００２５】
【実施例１】
消泡剤を配合せず製造したアクリル／スチレン共重合樹脂エマルション７５質量％、炭酸カルシウム２０質量％、水５質量％を混合分散してアクリル系樹脂エマルション塗料を得、これを羽型高速攪拌機を使用して高速攪拌を３分間実施し、発泡させることにより塗布型制振材１を得た。これをスリットノズルを装着したエアレススプレー塗装機により、鋼板に塗装し、乾燥造膜後に約５ｍｍ膜厚・面重量３ｋｇ／ｍ2の制振性塗膜を得た。
【００２６】
【実施例２】
消泡剤を配合せず、起泡剤を添加して製造したエチレン／酢酸ビニル共重合樹脂エマルション７３質量％、炭酸カルシウム２１質量％、水６質量％を混合分散してエチレン／酢酸ビニル共重合樹脂エマルション塗料を得、これを羽型高速攪拌機を使用して高速攪拌を３分間実施し、発泡させることにより塗布型制振材２を得た。これをスリットノズルを装着したエアレススプレー塗装機により、鋼板に塗装し、乾燥造膜後に約５ｍｍ膜厚・面重量３ｋｇ／ｍ2の制振性塗膜を得た。
【００２７】
【実施例３】
実施例１で使用したアクリル系樹脂エマルション塗料を、エアレススプレーガンのガン元に装着した衝突混合機により空気と混合させることにより発泡させ、鋼板に塗装し、乾燥造膜後に約５ｍｍ膜厚・面重量３ｋｇ／ｍ2の制振性塗膜を得た。
【００２８】
【実施例４】
実施例２で使用したエチレン／酢酸ビニル共重合樹脂エマルション塗料を、エアレススプレーガンのガン元に装着した衝突混合機により空気と混合させることにより発泡させ、鋼板に塗装し、乾燥造膜後に約５ｍｍ膜厚・面重量３ｋｇ／ｍ2の制振性塗膜を得た。
【００２９】
【比較例】
オールアクリルエマルション５０質量％、炭酸カルシウム３５重量％、分散剤５％、水１０重量％を混合分散し、アクリル樹脂エマルション塗料を得た。これをスリットノズルを装着したエアレススプレー塗装機により、鋼板に塗装し、乾燥造膜後に約２ｍｍ膜厚・面重量３ｋｇ／ｍ2の制振性塗膜を得た。
【００３０】
【試験方法】
制振性試験
上記の試験片を、強制加振法により、２０℃、４０℃、６０℃における損失係数を測定した。損失係数ηはその値が大きければ大きいほど制振効果が高く、０．１以上の数値であれば制振効果があるとされる。
【００３１】
【結果】
試験結果は以下の通りであった。
制振性試験による損失係数η
試験温度 ２０℃ ４０℃ ６０℃
実施例１ ０．１５ ０．２０ ０．１５
実施例２ ０．１１ ０．１８ ０．１２
実施例３ ０．１４ ０．２１ ０．１６
実施例４ ０．１２ ０．１７ ０．１１
比較例 ０．１０ ０．０７ ０．０３
【００３２】
【発明の効果】
本発明になる塗布型制振材による施工方法によれば、同一面重量の塗布型制振材に比較して、発泡により大きく嵩高となる制振性塗膜を得ることができ、いずれの温度においても高い制振性を発揮することができる。即ち、従来の塗布型制振材と同等程度の制振性であれば、その数分の１程度の面重量の塗布量で良く、大きく軽量化に貢献することができる。
また、従来は塗布型制振材を発泡させるには、塗膜中に加熱ガスを発生する有機発泡剤や、加熱により体積を膨張させる未膨張プラスチックバルーンを配合することにより、加熱乾燥炉の熱で発泡させていたが、本発明による施工方法であれば、加熱による乾燥は必ずしも必要ではなく、塗装直後において既に発泡状態の塗膜を、充分な時間があれば常温により造膜乾燥させることができるため、加熱乾燥炉設備のない塗装ラインにおいても実施が可能である。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a coating type vibration damping material applied to an automobile or the like.
[0002]
[Prior art]
Asphalt vibration damping sheets are attached or heat-sealed on the floor, doors, dash panels, etc. of automobiles for the purpose of imparting vibration damping properties. These sheets are trimmed according to the application part, and if necessary, the sticking surface is subjected to adhesive processing, stuck or placed, and the asphalt component is softened and melted by the heat in the paint drying furnace of the automobile. To fuse.
[0003]
These vibration damping sheets have sufficient vibration damping properties, but the number of steps for processing the sheet into the required shape increases, cutting waste is generated during trim processing, and the yield decreases. There are disadvantages. In addition, at the construction stage, installation work on necessary parts of the automobile must be relied upon manually, which is an obstacle to automation and labor saving. For this reason, a vibration-damping paint has been developed as an alternative to the vibration-damping sheet and has already been put to practical use. Japanese Patent Application Laid-Open No. 7-145331 filed by the present applicant includes a heat-expandable organic hollow filler or organic An aqueous paint containing a blowing agent is disclosed.
[0004]
In the said invention, it becomes the structure which uses water-soluble resin, water-dispersion-type resin, and emulsion-type resin as resin. Unlike solvent-based paints, these water-based resin paints are free from toxic gas generated from the paints during baking and drying, and have little influence on environmental problems that have been attracting attention in recent years.
[0005]
However, these water-based paints, particularly emulsion paints using an emulsion type resin, have a problem in heat drying conditions. This is because, for example, an automobile manufacturer whose production line may stop due to long vacations, etc., when the emulsion paint is applied and if the product stays for a long time due to the line stopping before heating and drying, etc. In the present situation, there is a problem that a coating film defect called bulge is generated on the surface of the coating film. For this reason, the present applicant has further researched and invented a coating-type vibration damping material that does not cause coating film defects even when there is a long-term residence, etc., and details are disclosed in Japanese Patent Application Laid-Open No. 2000-86936. Yes.
[0006]
Through the above series of research and development, a single-layer coating type damping material was developed, but for further expansion of the coating application site by further improving damping properties, a construction method from a different point of view, And development of coating materials.
[0007]
[Problems to be solved by the invention]
Therefore, the present invention has an object to develop a coating type damping material construction method that significantly improves the damping performance of the coated surface, and to develop a coating material for this construction method without changing the composition that leads to an increase in cost. And
[0008]
[Means for Solving the Problems]
As a solution to this problem, the present inventors have conducted extensive research, and as a result, the application method of the coating-type damping material that has improved the damping performance without changing the composition that leads to an increase in cost, and for this construction method. The development of the coating material was successful, and the gist of the present invention is as follows.
[0009]
The main component is a resin emulsion containing 1 to 3% by mass of an emulsifier having an HLB of 10 to 20, no antifoaming agent, and a foaming agent, and 50 to 75% by mass of the resin emulsion. A coating-type vibration-damping coating material is applied to a necessary portion using a slit nozzle after the coating-type vibration-damping coating material is foamed by high-speed stirring foaming.
The main component is a resin emulsion containing 1 to 3% by mass of an emulsifier having an HLB of 10 to 20, no antifoaming agent, and a foaming agent, and 50 to 75% by mass of the resin emulsion. The coating-type vibration-damping coating material is applied to a necessary location by a method of collision-mixing with an inert gas or air near the nozzle or near the nozzle. .
This will be described in detail below.
[0010]
The main component of the coating type vibration damping material according to the present invention is an emulsion paint composed of a resin emulsion. Examples of the resin emulsion include vinyl acetate resin emulsion, vinyl acetate copolymer resin emulsion, ethylene / vinyl acetate copolymer resin emulsion (EVA), acrylic resin emulsion, acrylic / styrene copolymer resin emulsion, and other polymerization types (containing fluororesin, Examples include functional emulsions such as silicone resin-containing, vinylidene chloride resins, emulsions, soap-free, core-shell types, water-soluble polymer mixed types, cross-linked types, and alkyd resin emulsions, urethane resin emulsions, etc. The emulsion produced can also be used.
[0011]
An emulsion produced by emulsion polymerization is prepared by adding a protective colloid emulsifier, water and a polymerization catalyst to a monomer, and then emulsion polymerized by heating to mix the plasticizer or modifier with the emulsion polymer. .
[0012]
The emulsion used for the coating type vibration damping material of the present invention contains 1 to 3% by mass of an emulsifier (surfactant) used in emulsion polymerization of the above emulsion, which is HLB 10-20. HLB is Hydrophile-Lipophile Balance, which represents the balance between hydrophilicity and lipophilicity with a numerical value of 0-20. In the case of an emulsifier having no hydrophilic group, HLB = 0, and in the case of an emulsifier having only a hydrophilic group and no lipophilic group, HLB = 20. If the emulsifier in the range of HLB = 10 to 20 is contained in an amount of 1 to 3% by mass and emulsion-polymerized, foaming by physical means described later is very easy.
[0013]
In order to prevent the occurrence of coating film defects during film formation, it is preferable not to add an antifoaming agent that is usually added to the resin emulsion used for the coating type damping material of the present invention. Antifoaming agents generally used in resin emulsions are mineral oil-based antifoaming agents based on mineral oil and containing fatty acid esters, higher fatty acid metal soaps, organophosphorus compounds, dimethyl silicon, polyether-modified silicon, hydrophobicity There are silicon antifoaming agents such as silica silicon compound, but it is preferable not to add any of them.
[0014]
Alternatively, it is preferable to add a necessary amount of a foaming agent to the resin emulsion. In general, an anionic surfactant such as soap, sodium dodecylbenzenesulfonate, sodium lauryl alcohol sulfate, sodium lauryl ether sulfate is used as a foaming agent used in a resin emulsion. The amount of foaming agent added is determined by the foaming method using physical means described below.
[0015]
In the resin emulsion used in the present invention, the relationship between the antifoaming agent and the foaming agent, that is, the addition pattern of the antifoaming agent and the foaming agent is as follows: (1) Antifoaming agent = no foaming agent = no (2) Three patterns of antifoaming agent = present / foaming agent = present, and (3) antifoaming agent = no / foaming agent = possible are possible. The effect of foaming the resin emulsion paint, which will be described later, easily and at a large foaming ratio is large in the order of (1) <(2) <(3).
[0016]
In general, resin emulsion paints contain a large amount of pigment in terms of the ratio of resin emulsion to pigment. Often, about 50% by weight is the pigment. This is due to ensuring the workability of painting such as spray and finishing of the coated surface. However, in the case of a coating-type vibration damping material as in the present invention, increasing the resin ratio improves the physical properties of the coating film typified by vibration damping performance. Therefore, in the present invention, since the resin emulsion paint, which will be described later, is physically foamed, the resin ratio and the weight ratio in the blending can be increased to 75% without deteriorating the coating workability. Contributes to greatly improving performance.
[0017]
As the pigment to be blended in the coating type vibration damping material of the present invention, pigments generally blended in a resin emulsion paint such as calcium carbonate, barium sulfate, clay, talc, mica can be used.
[0018]
The coating type vibration damping material of the present invention must be foamed by physical means before coating without adding a foaming agent that foams by reaction. In addition, although this invention can be implemented even if it does not add a foaming agent, it is also possible regarding the combined use of a foaming agent. In addition, it is very preferable to add a foam stabilizer or a foam stabilizer such as ammonium stearate for the purpose of maintaining the foam foamed by physical means for a long time.
[0019]
Examples of foaming by physical means include high-speed stirring foaming with a wing stirrer, foaming by injecting a high-speed air flow into a sealed container, foaming by vigorously vibrating the sealed container, and the like.
[0020]
The above is a method of foaming with physical means before sending the coating type damping material to the coating machine, but separately, the coating type damping material according to the present invention is applied by a pressure spray coating machine. In this case, it is also possible to take a foaming method by colliding with an inert gas or air at the hand of the coating gun or in the vicinity of the nozzle. According to this, foaming is performed by physical means immediately before painting.
[0021]
There are no particular limitations on the application of the coating-type damping material according to the present invention foamed before or just before application, and there are no particular limitations, and various conventionally known coating methods can be used. It is desirable to paint while holding the foam as much as possible. If it is an airless spray method, the method by a general nozzle tip is also possible, However, If it is the coating by a slit nozzle, it is more preferable for holding | maintenance of a bubble. In addition, a swirl type nozzle is also possible.
[0022]
Note that the coating type damping material according to the present invention can be applied by a computer-controlled painting robot, and in this case, unmanned painting work can be realized.
[0023]
The vibration damping material according to the present invention is applied in place of the sheet-like vibration damping material to the parts where the sheet-like vibration damping material has been pasted and used, such as an automobile floor, a dash panel, a trunk room, a door, and a roof panel. High vibration damping can be obtained by drying. In addition, since it is a coating type, it can also be applied to the floor of an automobile, and if it can provide sufficient chipping resistance due to the softness and flexibility of the coating film, it can be applied to conventional floors. It can be used in common with an underbody coat such as vinyl chloride or acrylic coated on the back. In addition to automobiles, it is possible to easily impart vibration damping properties to coating machines such as railway vehicles and ships, various industrial machines, buildings, and structures by painting.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
In order to provide an understanding of the present invention, examples are described below. Needless to say, the present invention is not limited to the following examples.
[0025]
[Example 1]
An acrylic / styrene copolymer resin emulsion (75% by mass), calcium carbonate (20% by mass), and water (5% by mass) prepared without blending an antifoaming agent were mixed and dispersed to obtain an acrylic resin emulsion paint. The coating type damping material 1 was obtained by carrying out high-speed stirring for 3 minutes and foaming. This was coated on a steel plate with an airless spray coating machine equipped with a slit nozzle, and after damping film formation, a vibration-damping coating film having a film thickness of about 5 mm and a surface weight of 3 kg / m 2 was obtained.
[0026]
[Example 2]
An ethylene / vinyl acetate copolymer was prepared by mixing and dispersing 73% by mass of an ethylene / vinyl acetate copolymer resin emulsion, 21% by mass of calcium carbonate, and 6% by mass of water. A resin emulsion paint was obtained, and this was subjected to high-speed stirring for 3 minutes using a wing-type high-speed stirrer and foamed to obtain a coating-type damping material 2. This was coated on a steel plate with an airless spray coating machine equipped with a slit nozzle, and after damping film formation, a vibration-damping coating film having a film thickness of about 5 mm and a surface weight of 3 kg / m 2 was obtained.
[0027]
[Example 3]
The acrylic resin emulsion paint used in Example 1 was foamed by mixing it with air using a collision mixer attached to the base of an airless spray gun, and coated on a steel plate. A vibration-damping coating film having a weight of 3 kg / m 2 was obtained.
[0028]
[Example 4]
The ethylene / vinyl acetate copolymer resin paint used in Example 2 was foamed by being mixed with air by a collision mixer attached to the gun base of an airless spray gun, coated on a steel plate, and about 5 mm after dry film formation. A vibration-damping coating film having a film thickness and a surface weight of 3 kg / m 2 was obtained.
[0029]
[Comparative example]
An acrylic resin emulsion paint was obtained by mixing and dispersing 50% by mass of an all acrylic emulsion, 35% by weight of calcium carbonate, 5% of a dispersant, and 10% by weight of water. This was coated on a steel sheet by an airless spray coating machine equipped with a slit nozzle, and after drying, a vibration-damping coating film having a film thickness of about 2 mm and a surface weight of 3 kg / m 2 was obtained.
[0030]
【Test method】
Damping property test The loss factor at 20 ° C, 40 ° C, and 60 ° C of the above-mentioned test piece was measured by a forced vibration method. The larger the loss coefficient η is, the higher the vibration damping effect is.
[0031]
【result】
The test results were as follows.
Loss coefficient η by vibration damping test
Test temperature 20 ℃ 40 ℃ 60 ℃
Example 1 0.15 0.20 0.15
Example 2 0.11 0.18 0.12
Example 3 0.14 0.21 0.16
Example 4 0.12 0.17 0.11
Comparative example 0.10 0.07 0.03
[0032]
【The invention's effect】
According to the construction method using the coating-type damping material according to the present invention, it is possible to obtain a vibration-damping coating film that becomes large and bulky due to foaming as compared with the coating-type damping material having the same surface weight. Can exhibit high vibration damping. In other words, if the vibration damping performance is about the same as that of a conventional coating type damping material, a coating amount having a surface weight of about one-fifth is sufficient, which can greatly contribute to weight reduction.
Conventionally, in order to foam a coating type damping material, an organic foaming agent that generates a heating gas in the coating film and a non-expanded plastic balloon that expands the volume by heating are blended to heat the heating and drying furnace. However, if it is a construction method according to the present invention, drying by heating is not necessarily required, and a coating film already in a foamed state immediately after coating can be dried at room temperature if there is sufficient time. Therefore, it can also be implemented in a painting line without a heating / drying furnace.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002375865A JP4251478B2 (en) | 2002-12-26 | 2002-12-26 | Application method of coating type damping paint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002375865A JP4251478B2 (en) | 2002-12-26 | 2002-12-26 | Application method of coating type damping paint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2004202403A JP2004202403A (en) | 2004-07-22 |
| JP4251478B2 true JP4251478B2 (en) | 2009-04-08 |
Family
ID=32813466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002375865A Expired - Lifetime JP4251478B2 (en) | 2002-12-26 | 2002-12-26 | Application method of coating type damping paint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4251478B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4798256B2 (en) | 2009-05-27 | 2011-10-19 | トヨタ自動車株式会社 | Nozzle unit for applying damping material and damping material application device |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5380434A (en) * | 1976-12-27 | 1978-07-15 | Ito Toyomi | Dewwproof* heattinsulating and sounddabsorbing coating composition for ceiling and coating method thereof |
| JPH068553B2 (en) * | 1983-08-22 | 1994-02-02 | 株式会社ノダ | Construction method of wall surface in house |
| JPH0193353A (en) * | 1987-10-05 | 1989-04-12 | Nitto Denko Corp | Preparation of foam |
| JPH02264079A (en) * | 1989-04-03 | 1990-10-26 | Numata Kagaku Seihin Kk | Foam for carpet backing |
| JPH0673228A (en) * | 1992-08-27 | 1994-03-15 | Japan Synthetic Rubber Co Ltd | Acrylic foam vibration-damping material |
| JP3504378B2 (en) * | 1995-04-04 | 2004-03-08 | アサヒゴム株式会社 | Undercoat structure for noise prevention |
| JP3827031B2 (en) * | 1997-01-24 | 2006-09-27 | 大日本インキ化学工業株式会社 | Damping water-based paint composition |
| JP3972234B2 (en) * | 1999-02-08 | 2007-09-05 | 大日本インキ化学工業株式会社 | Aqueous urethane resin composition for porous formation |
-
2002
- 2002-12-26 JP JP2002375865A patent/JP4251478B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2004202403A (en) | 2004-07-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102408792B (en) | Waterborne damping coating for vehicle | |
| JP3913444B2 (en) | Acrylic sol for soundproof undercoat | |
| EP0906940B1 (en) | Chipping resistant paint | |
| JP5797650B2 (en) | Encapsulated phenolic antioxidant | |
| JP3951356B2 (en) | Damping water-based paint composition | |
| CN106103604A (en) | Coating composition and method for noise elimination and vibration damping and resistance to water | |
| WO2011019691A1 (en) | Coatings comprising itaconate latex particles and methods for using the same | |
| US8163380B2 (en) | Damping composition with improved bakability | |
| JP4251478B2 (en) | Application method of coating type damping paint | |
| JP7191741B2 (en) | Vinyl chloride plastisol composition | |
| JP3942284B2 (en) | How to prevent blisters when left between processes after application-type damping material coating | |
| JPH07145331A (en) | Water-based coating material with vibration-damping property | |
| JP2002294164A (en) | Water-base soundproof vibration-proofing coating material composition, method for forming coating film, and coated object | |
| JP2922469B2 (en) | Single-coat water-based paint | |
| CN109694627A (en) | A kind of Waterborne damping coating for vehicle | |
| JP2018184521A (en) | Vinyl chloride resin composition | |
| JPH10204370A (en) | Vibration-damping water-based coating composition | |
| JP5770432B2 (en) | Emulsion composition for heat drying, method for producing the same, and damping material composition | |
| JP2004503652A (en) | Damping material based on asphalt emulsion | |
| JP3504378B2 (en) | Undercoat structure for noise prevention | |
| JPH04145174A (en) | Vibration-damping plastisol composition | |
| JP2002121351A (en) | Thermosetting composition, and sealing article and sealing structure made by using it | |
| JPH07102147A (en) | Acrylic sol composition | |
| JP2000239431A (en) | Expandable filler composition and reinforcing method of car body | |
| CA2128753A1 (en) | Water-based coating composition |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20060320 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20061116 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20061226 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20070731 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20070919 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20090115 |
|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20090115 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 4251478 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120130 Year of fee payment: 3 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130130 Year of fee payment: 4 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140130 Year of fee payment: 5 |
|
| EXPY | Cancellation because of completion of term |