JPH1193294A - Aluminium porous sound absorbing material - Google Patents
Aluminium porous sound absorbing materialInfo
- Publication number
- JPH1193294A JPH1193294A JP25221197A JP25221197A JPH1193294A JP H1193294 A JPH1193294 A JP H1193294A JP 25221197 A JP25221197 A JP 25221197A JP 25221197 A JP25221197 A JP 25221197A JP H1193294 A JPH1193294 A JP H1193294A
- Authority
- JP
- Japan
- Prior art keywords
- absorbing material
- fluororesin
- group
- coating material
- sound absorbing
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、高速道路、橋梁、
鉄道、一般道路、その他の屋外構築物、および屋内プー
ル、体育館、講堂、ホール、等の屋内設備に敷設する吸
音材に係わるものである。[0001] The present invention relates to a highway, a bridge,
The present invention relates to a sound absorbing material laid in a railway, a general road, other outdoor structures, and indoor facilities such as an indoor pool, a gymnasium, an auditorium, a hall, and the like.
【０００２】[0002]
【従来の技術】屋内設備、屋外設備に敷設する吸音材と
して、板状や塊状をなすアルミニウム多孔質が使用され
ている。このアルミニウム多孔質材を使用するに当たっ
ては、着色用顔料を混和した有機系または無機系コーテ
ィング材をこのアルミ多孔質表面に塗布する方法があ
る。2. Description of the Related Art As a sound-absorbing material laid in indoor equipment and outdoor equipment, a porous aluminum plate or lump is used. When using this aluminum porous material, there is a method of applying an organic or inorganic coating material mixed with a coloring pigment to the aluminum porous surface.
【０００３】例えば、有機系コーティング材を塗布する
方法としては、油性塗料、合成樹脂塗料、繊維素系塗
料、を塗布する方法があり、合成樹脂塗料の中では、汎
用塗料のメラミンアルキド樹脂塗料等が主として用いら
れる。For example, as a method of applying an organic coating material, there is a method of applying an oil paint, a synthetic resin paint, or a cellulose paint. Among the synthetic resin paints, a melamine alkyd resin paint, which is a general-purpose paint, is used. Is mainly used.
【０００４】また、無機系コーティング材を塗布する方
法としては、特開平３−１３１９００、特開平６−３３
７６８１に、無機系のコーティング材を塗布して、耐蝕
性、耐候性、耐熱性、曲げ加工性に優れ、また塗装によ
る吸音特性の低下のない、かつ外観上の色むらもないア
ルミニウム多孔質吸音材が開示されている。As a method of applying an inorganic coating material, Japanese Patent Application Laid-Open Nos. 3-131900 and 6-33
7681, an inorganic coating material is applied, which is excellent in corrosion resistance, weather resistance, heat resistance, bending workability, does not reduce the sound absorption characteristics due to painting, and has no color unevenness in appearance. A material is disclosed.
【０００５】[0005]
【発明が解決しようとする課題】アルミニウム多孔質吸
音材が世の中に販売されて以来２０年が経過している。
しかし従来の塗装による方法や、特開平３−１３１９０
０あるいは特開平６−３３７６８１に開示されている、
無機系のコーティング材を塗布する方法では、塗膜の剛
性が大きく柔軟性に欠けるため割れやすく、特に塗膜を
厚くした場合には曲げ加工時に塗膜が割れるために、剥
離、耐蝕性の低下を生ずるという問題がある。また、耐
汚染性が不十分であり長期間の使用で変色を起こすとい
う問題がある。It has been 20 years since aluminum porous sound absorbing materials were sold to the world.
However, the conventional coating method and Japanese Patent Application Laid-Open No.
0 or disclosed in JP-A-6-337681.
In the method of applying an inorganic coating material, the coating film has high rigidity and lacks flexibility, so it is easy to crack. Especially when the coating film is thick, the coating film breaks at the time of bending, so the peeling and corrosion resistance decrease. Is a problem. In addition, there is a problem that the stain resistance is insufficient and discoloration occurs during long-term use.
【０００６】さらに有機系コーティング材を塗布する方
法では、一般に硬化速度が遅いために、この塗料が毛管
現象により多孔質材の内部に不均一に浸入する怖れがあ
り、色むらを生じ、更には多孔質内部に浸入した塗料に
より気孔が部分的に閉塞されて吸音率の低下を起こすと
いう問題がある。また、耐候性や耐汚染性が不十分であ
るばかりか、長期間の使用で変色や劣化を起こすという
問題がある。Further, in the method of applying an organic coating material, since the curing speed is generally slow, there is a fear that the paint may enter the porous material unevenly due to a capillary phenomenon, causing color unevenness. However, there is a problem in that the pores are partially blocked by the paint that has entered the inside of the porous material, causing a decrease in the sound absorption coefficient. In addition, there is a problem that not only the weather resistance and the stain resistance are insufficient, but also the coloration and the deterioration are caused in a long-term use.
【０００７】本発明の目的は、前記従来技術の問題点を
解決する事にあり、美麗な外観と優れた耐蝕性、耐候性
を有し、かつ長期間の安定した吸音特性と耐汚染性を有
し、更に曲げ加工や取付施工の容易なアルミニウム多孔
質材を提供しようとすることにある。An object of the present invention is to solve the above-mentioned problems of the prior art, and has a beautiful appearance, excellent corrosion resistance and weather resistance, and a long-term stable sound absorbing property and stain resistance. Another object of the present invention is to provide an aluminum porous material which has easy bending and mounting work.
【０００８】[0008]
【０００９】[0009]
【表１】 [Table 1]
【００１０】[0010]
【表２】 [Table 2]
【００１１】上記課題を解決するために本発明者等は種
々の実験を行った。さて、従来の有機系コーテイング材
では、特に耐候性、耐汚染性に問題が有ったので、まず
この分野で評価の高い、フッ素樹脂、アクリルシリコン
樹脂、アクリルウレタン樹脂を主成分とする有機系コー
テイング材について、耐候性、耐汚染性を調べた。結果
を表１、表２に示す。これらの結果から、耐候性の点で
フッ素樹脂以外の物は、耐候性、耐汚染性共にかなり劣
り、実用上問題のあることが判明した。The present inventors have conducted various experiments in order to solve the above problems. By the way, the conventional organic coating material has a problem in particular in weather resistance and stain resistance. Therefore, first of all, an organic resin mainly composed of a fluorine resin, an acrylic silicone resin, and an acrylic urethane resin, which is highly evaluated in this field, is used. The coating material was examined for weather resistance and stain resistance. The results are shown in Tables 1 and 2. From these results, it was found that those other than the fluororesin were considerably inferior in both weather resistance and stain resistance in terms of weather resistance, and had problems in practical use.
【００１２】次に、塗膜の曲げ加工時の割れに起因する
耐蝕性の問題であるが、曲げ加工時の割れを防止する目
的で、塗膜の剛性が小さい、すなわち、柔軟性の大き
い、フッ素樹脂を探索した。一般に塗膜の柔軟性は塗膜
の伸び率と相関があるので、塗膜の引張り試験を実施
し、破断時の伸び率で塗膜の柔軟性を評価した結果を表
３に示す。この結果から明らかなように、２種類のフッ
素樹脂の伸び率はいずれも、無機系コーテイング材の伸
び率を、遙かに上回る、良好な結果を示した。Next, regarding the problem of corrosion resistance due to cracking during bending of the coating film, for the purpose of preventing cracking during bending, the coating film has low rigidity, that is, high flexibility. We searched for fluororesin. In general, since the flexibility of a coating film is correlated with the elongation percentage of the coating film, a tensile test of the coating film was performed, and the results of evaluating the flexibility of the coating film by the elongation percentage at break are shown in Table 3. As is evident from the results, the elongation percentages of the two types of fluororesins both showed good results, far exceeding the elongation percentages of the inorganic coating materials.
【００１３】[0013]
【表３】 [Table 3]
【００１４】本発明は、上記耐候性、耐汚染性、塗膜の
伸び率に関する実験結果により得られた知見に基づいて
成したものである。すなわち、本発明は、（１） アル
ミニウム多孔質吸音材の表面を、フッ素樹脂を主成分と
する常温乾燥型コーティング材で、塗装することを特徴
とする、アルミニウム多孔質吸音材である。The present invention has been made based on the knowledge obtained from the experimental results on the above-mentioned weather resistance, stain resistance, and elongation of the coating film. That is, the present invention is (1) an aluminum porous sound absorbing material characterized in that the surface of the aluminum porous sound absorbing material is coated with a room temperature drying type coating material containing a fluororesin as a main component.
【００１５】（２） アルミニウム多孔質吸音材の表面
を、一般式 −（ＣＦ2−ＣＦＸ）−（ＣＨ2−ＣＨＯＲ）− ［式中Ｘは、Ｆ，ＣＦ3，Ｃｌ基、Ｒは、Ｈ，アルキ
ル、アルキレン基、を示す]で示されるフッ素樹脂を主
成分とする常温乾燥型コーティング材で、塗装すること
を特徴とする、アルミニウム多孔質吸音材である。(2) The surface of the aluminum porous sound-absorbing material is treated by a general formula-(CF 2 -CFX)-(CH 2 -CHOR)-wherein X is an F, CF 3 , Cl group and R is H , An alkyl, an alkylene group], which is a room-temperature-dry type coating material containing a fluororesin as a main component and painted.
【００１６】（３） アルミニウム多孔質吸音材の表面
を、一般式 −（ＣＦ2−ＣＨ2）−（Ｘ）−（Ｙ）− ［式中、Ｘは４フッ化エチル基、Ｙは６フッ化プロピル
基を示す。］で示されるフッ素系樹脂を主成分とする常
温乾燥型コーティング材で、塗装することを特徴とす
る、アルミニウム多孔質吸音材である。(3) The surface of the porous aluminum sound-absorbing material is treated by a general formula-(CF 2 -CH 2 )-(X)-(Y)-wherein X is an ethyl tetrafluoride group, and Y is 6 Propyl group. ] A porous dry aluminum sound absorbing material characterized by being coated with a room temperature drying type coating material containing a fluorine-based resin as a main component.
【００１７】なお、本発明のアルミニウム多孔質吸音材
とは、アルミニウム焼結板、アルミニウム繊維吸音板、
発泡アルミニウム板、等を含めて総称とするものであ
る。The aluminum porous sound absorbing material of the present invention includes an aluminum sintered plate, an aluminum fiber sound absorbing plate,
It is a generic term including a foamed aluminum plate and the like.
【００１８】[0018]
【発明の実施の形態】本発明で用いられるフッ素樹脂
は、４フッ化エチレン、６フッ化プロピレン、フッ化ビ
ニリデン、パーフルオロアルキルビニルエーテル、３フ
ッ化エチレン、３フッ化塩化エチレン等のフッ素含有モ
ノマーを必須とし、場合により、ビニルエーテル、エチ
レン等をモノマーとする、２元又は３元重合体である。BEST MODE FOR CARRYING OUT THE INVENTION The fluorine resin used in the present invention is a fluorine-containing monomer such as ethylene tetrafluoride, propylene hexafluoride, vinylidene fluoride, perfluoroalkyl vinyl ether, ethylene trifluoride, ethylene chloride trifluoride, etc. And a binary or tertiary polymer containing vinyl ether, ethylene or the like as a monomer in some cases.
【００１９】例えば、請求項２で示すグループでは、一
般式 −（ＣＦ2−ＣＦＸ）−（ＣＨ2−ＣＨＯＲ）− ［式中Ｘは、Ｆ，ＣＦ3，Ｃｌ基、Ｒは、Ｈ，アルキ
ル、アルキレン基、を示す]で示される、フッ化オレフ
ィン、ビニルエーテルをモノマーとする２元重合体で、
各モノマー成分の重量比は、好ましくは、フッ化オレフ
ィンが３０〜５０％、ビニルエーテルが７０〜５０％、
である。また、平均分子量は８千から２０万程度であ
る。本フッ素樹脂は、イソシアネートと混合し、２液型
常温硬化型塗料として使用される。For example, in the group described in claim 2, a compound represented by the general formula-(CF 2 -CFX)-(CH 2 -CHOR)-wherein X is an F, CF 3 , Cl group, and R is H, alkyl , An alkylene group), a fluorinated olefin, a binary polymer having vinyl ether as a monomer,
The weight ratio of each monomer component is preferably 30 to 50% for fluorinated olefin, 70 to 50% for vinyl ether,
It is. The average molecular weight is about 8,000 to 200,000. The present fluororesin is mixed with an isocyanate and used as a two-part cold-setting paint.
【００２０】また、請求項３で示すグループでは、一般
式 −（ＣＦ2−ＣＨ2）−（Ｘ）−（Ｙ）− ［式中、Ｘは４フッ化エチル基、Ｙは６フッ化プロピル
基を示す。］で示される、フッ化ビニリデン、４フッ化
エチレン、６フッ化プロピレンを、モノマーとする３元
重合体で、各モノマー成分の重量比は、好ましくは、フ
ッ化ビニリデンが７０〜４０％、４フッ化エチレンが２
０〜５０％、６フッ化プロピレンが１〜３０％、であ
る。また、平均分子量は４万から１５万程度である。The group represented by claim 3 is a compound represented by the general formula:-(CF 2 -CH 2 )-(X)-(Y)-wherein X is an ethyl tetrafluoride group and Y is propyl hexafluoride. Represents a group. And the weight ratio of each monomer component is preferably 70 to 40% of vinylidene fluoride, and 4 to 40% of vinylidene fluoride. 2 fluorinated ethylene
0 to 50%, and 1 to 30% of propylene hexafluoride. The average molecular weight is about 40,000 to 150,000.
【００２１】本フッ素樹脂は、塗膜の耐候性、強度など
の物性を向上させるため、アクリル樹脂と混合使用され
る。アクリル樹脂としては、モノマー成分としてメチル
メタアクリレートを、９０％以上含み、平均分子量は２
５万から１７０万程度である。フッ素樹脂とアクリル樹
脂の重量比は、好ましくは、フッ素樹脂が５０〜９０
％、アクリル樹脂が５０〜１０％、である。The fluororesin is mixed with an acrylic resin in order to improve physical properties such as weather resistance and strength of the coating film. The acrylic resin contains 90% or more of methyl methacrylate as a monomer component, and has an average molecular weight of 2
It is about 50,000 to 1.7 million. The weight ratio between the fluororesin and the acrylic resin is preferably such that the fluororesin is 50 to 90%.
%, 50 to 10% of acrylic resin.
【００２２】コーテイング材は、上記のフッ素樹脂及び
その他の樹脂、添加剤、色材、等の配合成分を混合し、
有機溶剤に溶解、分散させた組成物として提供される。
上記のフッ素樹脂及びその他の樹脂を溶解させるため
の、好適な有機溶剤は、芳香族、ケトン、エステル、塩
素系溶剤等である。例えば、トルエン、キシレン、アセ
トン、ジエチルケトン、メチルエチルケトン、メチルプ
ロピルケトン、メチルイソブチルケトン、シクロヘキサ
ノン、酢酸エチル、酢酸ブチル、フラン、ブチルセロソ
ルブ、トリクレン、塩化メチレン、セロソルブが挙げら
れる。The coating material is prepared by mixing components such as the above-mentioned fluororesin and other resins, additives, coloring materials, and the like,
It is provided as a composition dissolved and dispersed in an organic solvent.
Suitable organic solvents for dissolving the fluororesin and other resins include aromatic, ketone, ester, and chlorinated solvents. For example, toluene, xylene, acetone, diethyl ketone, methyl ethyl ketone, methyl propyl ketone, methyl isobutyl ketone, cyclohexanone, ethyl acetate, butyl acetate, furan, butyl cellosolve, trichlene, methylene chloride, cellosolve.
【００２３】また、アルミニウム多孔質吸音材には、前
記したように、アルミニウム焼結板、アルミニウム繊維
吸音板、および、発泡アルミニウム板があるが、これら
のアルミニウム多孔質吸音材の表面に、フッ素樹脂を主
成分とする常温乾燥型コーティング材を、スプレーガン
吹き付け等の一般的塗装手法により塗装し、室温〜１５
０℃で３分〜２０時間加熱乾燥し、厚さ１０〜３０μｍ
の塗膜を形成する。好ましくは、予め４０〜５０℃に加
熱したアルミニウム多孔質吸音材をスプレー塗装し、１
２０〜１４０℃で５〜２０分加熱乾燥する。As described above, the aluminum porous sound-absorbing material includes an aluminum sintered plate, an aluminum fiber sound-absorbing plate and a foamed aluminum plate. A room temperature drying type coating material mainly composed of
Heat and dry at 0 ° C for 3 minutes to 20 hours, thickness 10 to 30 μm
To form a coating film. Preferably, a porous aluminum sound absorbing material previously heated to 40 to 50 ° C. is spray-coated and
Heat and dry at 20-140 ° C for 5-20 minutes.
【００２４】塗膜は短時間で形成されるので、コーティ
ング材が多孔質材の気孔に浸入する前に硬化するため、
気孔の閉塞が防止されると共にアルミニウム多孔質吸音
材の表面の塗膜厚を一定に保つことが出来る。また加工
時間の短縮にも繋がる。Since the coating film is formed in a short time, it hardens before the coating material enters the pores of the porous material.
The pores can be prevented from being blocked, and the coating thickness on the surface of the aluminum porous sound absorbing material can be kept constant. It also leads to a reduction in processing time.
【００２５】このようにして得られたアルミニウム多孔
質吸音材は、耐薬品性、耐汚染性、耐紫外線性を有する
安定な塗膜で表面を被覆されている。また、塗膜は低温
でも短時間で形成されるので、加工後に破損した塗膜の
補修も容易である。The surface of the porous aluminum sound absorbing material thus obtained is covered with a stable coating film having chemical resistance, stain resistance and ultraviolet light resistance. Further, since the coating film is formed in a short time even at a low temperature, it is easy to repair a coating film damaged after processing.
【００２６】[0026]
【実施例】以下、本発明の具体的実施例と比較例を挙
げ、本発明をより詳細に説明する。EXAMPLES Hereinafter, the present invention will be described in more detail with reference to specific examples and comparative examples of the present invention.
【００２７】〔実施例１〕アルミニウム多孔質吸音材と
して、約１００μｍ径のアルミニウム繊維からなる不織
布の両面をアルミニウムからなるエクスパンドメタルで
挟持し、ロ−ル圧延成形したもので、厚さ１．６ｍｍ、
不織布面密度（ｇ／ｍ2）１，６５０ のものを用い
た。Example 1 As a porous aluminum sound absorbing material, a non-woven fabric made of aluminum fiber having a diameter of about 100 μm was sandwiched on both sides by expanded metal made of aluminum, and roll-rolled to a thickness of 1.6 mm. ,
A nonwoven fabric having an areal density (g / m 2 ) of 1,650 was used.
【００２８】また、コーテイング材としては、まずフッ
化オレフィン、ビニルエーテルをモノマーとする２元重
合体フッ素樹脂（各モノマー成分の重量比は、フッ化オ
レフィンが４０％、ビニルエーテルが６０％）５０重量
部を、キシレン５０重量部に溶解し、ワニスを調製し
た。このワニス１００重量部に、キシレン２５重量部、
メチルイソブチルケトン７５重量部、酸化チタン（石原
産業(株)製、タイペークＲ６８０）１６重量部を添加
し、ボールミルで攪拌、分散を行い、コーテイング材を
調製した。As the coating material, first, 50 parts by weight of a binary polymer fluororesin containing fluorinated olefin and vinyl ether as monomers (the weight ratio of each monomer component is 40% for fluorinated olefin and 60% for vinyl ether) Was dissolved in 50 parts by weight of xylene to prepare a varnish. 100 parts by weight of the varnish, 25 parts by weight of xylene,
75 parts by weight of methyl isobutyl ketone and 16 parts by weight of titanium oxide (manufactured by Ishihara Sangyo Co., Ltd., Taipaque R680) were added, and the mixture was stirred and dispersed by a ball mill to prepare a coating material.
【００２９】このコーテイング材２００重量部に、イソ
シアネート１０重量部と、ジブチルラウレート０．００
０３５重量部を添加、混合してなる、コーテイング材
を、予め５０℃に加熱された上記アルミニウム多孔質吸
音材の表面に、スプレーガンで均一に吹き付け、乾燥後
に形成される塗装膜厚が、１５μｍになるよう塗装し
た。これを、１４０℃で１０分間乾燥した。To 200 parts by weight of this coating material, 10 parts by weight of isocyanate and 0.00 part of dibutyl laurate were added.
A coating material obtained by adding and mixing 035 parts by weight is uniformly sprayed with a spray gun on the surface of the aluminum porous sound absorbing material previously heated to 50 ° C., and the coating film thickness formed after drying is 15 μm. It was painted to become. This was dried at 140 ° C. for 10 minutes.
【００３０】〔実施例２〕アルミニウム多孔質吸音材と
して、約１００μｍ径のアルミニウム繊維からなる不織
布の両面をアルミニウムからなるエクスパンドメタルで
挟持し、ロ−ル圧延成形したもので、厚さ１．６ｍｍ、
不織布面密度（ｇ／ｍ2）１，６５０ のものを用い
た。Example 2 As a porous aluminum sound absorbing material, a non-woven fabric made of aluminum fibers having a diameter of about 100 μm was sandwiched on both sides by expanded metal made of aluminum and roll-rolled, and had a thickness of 1.6 mm. ,
A nonwoven fabric having an areal density (g / m 2 ) of 1,650 was used.
【００３１】コーテイング材としては、フッ化ビニリデ
ン、４フッ化エチレン、６フッ化プロピレンを、モノマ
ーとする３元重合体フッ素樹脂（各モノマー成分の重量
比は、フッ化ビニリデンが５７％、４フッ化エチレンが
３７％、６フッ化プロピレンが６％）と、メチルメタク
リレート、メタクリル酸を、モノマーとする２元重合体
アクリル樹脂（各モノマー成分の重量比は、メチルメタ
クリレートが９５％、メタクリル酸が５％）とを準備し
た。As the coating material, a terpolymer fluororesin containing vinylidene fluoride, ethylene tetrafluoride and propylene hexafluoride as monomers (the weight ratio of each monomer component is as follows: vinylidene fluoride is 57%, Ethylene copolymer (37%, propylene hexafluoride 6%), and methyl methacrylate and methacrylic acid as monomers. Binary polymer acrylic resin (the weight ratio of each monomer component is 95% for methyl methacrylate and 95% for methacrylic acid. 5%).
【００３２】これらの、フッ素樹脂６０ｇとアクリル樹
脂４０ｇとを、シクロヘキサノン５０重量％、メチルイ
ソブチルケトン２５重量％、酢酸ブチル２５重量％から
なる混合有機溶剤１８５ｇに溶解し、ワニスを調製し
た。このワニス１００重量部に、酸化チタン（石原産業
(株)製、タイペークＲ６８０）１６重量部を添加し、ボ
ールミルで攪拌、分散を行い、コーテイング材を調製し
た。A varnish was prepared by dissolving 60 g of the fluororesin and 40 g of the acrylic resin in 185 g of a mixed organic solvent consisting of 50% by weight of cyclohexanone, 25% by weight of methyl isobutyl ketone and 25% by weight of butyl acetate. 100 parts by weight of this varnish is added to titanium oxide (Ishihara Sangyo
16 parts by weight (Taipaek R680, manufactured by Co., Ltd.) were added, and the mixture was stirred and dispersed by a ball mill to prepare a coating material.
【００３３】このコーテイング材を、予め５０℃に加熱
された上記アルミニウム多孔質吸音材の表面に、スプレ
ーガンで均一に吹き付け、乾燥後に形成される塗装膜厚
が、１５μｍになるよう塗装した。これを、１４０℃で
１０分間乾燥した。The coating material was uniformly sprayed onto the surface of the aluminum porous sound absorbing material previously heated to 50 ° C. with a spray gun so that the coating thickness formed after drying was 15 μm. This was dried at 140 ° C. for 10 minutes.
【００３４】〔比較例１〕アルミニウム多孔質吸音材と
しては、実施例と同一物を使用した。これに塗布するコ
ーテイング材として、メチルメトキシシラン加水分解縮
合物及びアルミナゾルからなるワニスを合成した。かか
るワニスの固形分は２５％であった。このワニス１００
重量部に、酸化チタン（石原産業(株)製、タイペークＲ
６８０）１６重量部を添加し、ボールミルで攪拌、分散
を行い、コーテイング材を調製した。Comparative Example 1 The same porous aluminum sound absorbing material as in the example was used. As a coating material to be applied thereto, a varnish composed of a hydrolyzed condensate of methylmethoxysilane and alumina sol was synthesized. The varnish had a solids content of 25%. This varnish 100
Parts by weight are titanium oxide (manufactured by Ishihara Sangyo Co., Ltd.,
680) 16 parts by weight were added, and the mixture was stirred and dispersed by a ball mill to prepare a coating material.
【００３５】このコーテイング材を、上記アルミニウム
多孔質吸音材の表面に、スプレーガンで均一に吹き付
け、乾燥後に形成される塗装膜厚が、１５μｍになるよ
う塗装した。これを、２００℃で１０分間乾燥した。This coating material was uniformly sprayed on the surface of the porous aluminum sound absorbing material with a spray gun so that the coating thickness formed after drying was 15 μm. This was dried at 200 ° C. for 10 minutes.
【００３６】上記着色アルミニウム多孔質吸音材につい
て、以下に示す試験方法で各種物性試験を行った。 １）外観：表面の目視観察。 ２）密着試験：ＮＹカッターで、１ｍｍ角１００マスの
碁盤目模様の切傷を入れ、 テープ剥離２回を行う。
未剥離のマス目数を判定。 ３）塩水噴霧：（ＪＩＳ−Ｚ−２３７１に準ずる）３５
℃、５％塩水を１００８時間噴霧を行った後、水洗し２
４時間放置後、外観を目視観察。Various physical properties tests were carried out on the colored aluminum porous sound absorbing material by the following test methods. 1) Appearance: Visual observation of the surface. 2) Adhesion test: 100 mm square 1 mm square cuts are made with a NY cutter, and the tape is peeled twice.
The number of unstriped squares was determined. 3) Salt spray: (according to JIS-Z-2371) 35
5% salt water for 1008 hours, then washed with water
After standing for 4 hours, the appearance was visually observed.
【００３７】４）煮沸試験：沸騰水に４時間浸漬後、１
００℃で、２０時間保温、乾燥を１サイクルとし、これ
を２サイクル行った後、外観及び密着試験を行う。 ５）耐湿試験：（ＪＩＳ−Ｋ−２２４６に準ずる）湿潤
試験器（４９±１℃，ＲＨ９５％以上）に５００時間放
置後、外観及び密着試験を行う。 ６）耐候性試験：（ＪＩＳ−Ｋ−５４００に準ずる）サ
ンシャインウェザーメーター２０００時間照射後、外観
を目視観察。 ７）硬度：（ＪＩＳ−Ｋ−５４００に準ずる）鉛筆剥離
硬度。4) Boiling test: After immersion in boiling water for 4 hours, 1
One cycle of holding and drying at 00 ° C. for 20 hours is performed, and after two cycles, the appearance and adhesion test are performed. 5) Moisture resistance test: After standing for 500 hours in a humidity tester (conforming to JIS-K-2246) (49 ± 1 ° C., RH 95% or more), an appearance and adhesion test are performed. 6) Weather resistance test: (according to JIS-K-5400) After irradiation for 2000 hours with a sunshine weather meter, the external appearance was visually observed. 7) Hardness: Pencil peel hardness (according to JIS-K-5400).
【００３８】８）引張り試験：コーテイング材を離型紙
上に塗布しフィルムを作り、これをダンベル２号で打ち
抜いて、試験サンプルを作成し、島津製オートグラフに
て、 測定した。引張り条件：引張り速度２００ｍ
ｍ、チャック間距離５０ｍｍ、 ロードセル５ｋｇ
ｆ、測定温度：２５℃ ９）曲げ加工後の耐蝕性：着色塗装面を外面に向け、内
径１５０ｍｍの円筒になるよう曲げ加工し、塩水噴霧、
煮沸試験を行う。 １０）吸音特性：ＪＩＳ Ａ−１４０５の垂直入射吸音
率測定法に準拠し、背後空気層５０ｍｍで行う。8) Tensile test: A coating material was applied on release paper to form a film, which was punched out with a dumbbell No. 2 to prepare a test sample, which was measured with an autograph manufactured by Shimadzu. Tensile condition: 200m tensile speed
m, distance between chucks 50mm, load cell 5kg
f, Measurement temperature: 25 ° C. 9) Corrosion resistance after bending: The colored painted surface is turned to the outer surface, bent into a cylinder with an inner diameter of 150 mm, and sprayed with salt water.
Perform a boiling test. 10) Sound absorption characteristics: Measured in a 50 mm behind air layer in accordance with JIS A-1405, the normal incidence sound absorption measurement method.
【００３９】各種物性試験を、表４に示す。また、吸音
特性の測定結果を図１に示す。表４から明らかなよう
に、実施例で得られた製品は、耐蝕性、耐熱性、耐候
性、耐湿性、耐煮沸性、曲げ加工性、耐汚染性に優れ、
外観上の色斑もない。また、図１からも明らかなよう
に、塗装による吸音率の低下も認められない。Table 4 shows various physical property tests. FIG. 1 shows the measurement results of the sound absorption characteristics. As is clear from Table 4, the products obtained in the examples are excellent in corrosion resistance, heat resistance, weather resistance, moisture resistance, boiling resistance, bending workability, stain resistance,
No color spots on appearance. Further, as is clear from FIG. 1, no decrease in the sound absorption coefficient due to painting is observed.
【００４０】[0040]
【表４】 [Table 4]
【００４１】[0041]
【発明の効果】本発明により着色塗装されたアルミニウ
ム多孔質吸音材は、耐蝕性、耐熱性、耐候性、耐湿性、
耐煮沸性、曲げ加工性、耐汚染性に優れ、外観上の色斑
もなく、かつ、塗装による吸音率の低下も認められな
い。併せて、塗料コストが他の物に比べて安価であるこ
と、常温乾燥型であるため塗装後加熱する必要がないこ
とによる、塗装工程の簡易化等により、トータル製造コ
ストの低減が可能である。The aluminum porous sound absorbing material colored and coated according to the present invention has corrosion resistance, heat resistance, weather resistance, moisture resistance,
It has excellent boiling resistance, bending workability, and stain resistance, does not have color spots on its appearance, and does not show any decrease in sound absorption due to painting. At the same time, the total manufacturing cost can be reduced by simplification of the coating process, etc., because the coating cost is cheaper than other products, and since it is a room temperature drying type, there is no need to heat after coating. .
【図１】 表面塗装実施前後の吸音特性の差異を示す図
である。FIG. 1 is a diagram showing a difference in sound absorption characteristics before and after performing surface coating.
Ａ：本発明による表面塗装を実施していない、アルミニ
ウム多孔質吸音材の吸音特性を示す曲線である。 Ｂ：本発明による表面塗装を実施した場合の、アルミニ
ウム多孔質吸音材の吸音特性を示す曲線である。A: Curve showing the sound absorption characteristics of an aluminum porous sound absorbing material not coated with the surface according to the present invention. B: Curve showing the sound absorption characteristics of the aluminum porous sound absorbing material when the surface coating according to the present invention was performed.
Claims (3)
ッ素樹脂を主成分とする常温乾燥型コーティング材で、
塗装することを特徴とする、アルミニウム多孔質吸音
材。1. A room-temperature dry-type coating material containing a fluororesin as a main component on the surface of an aluminum porous sound-absorbing material,
An aluminum porous sound-absorbing material characterized by being painted.
般式 −（ＣＦ2−ＣＦＸ）−（ＣＨ2−ＣＨＯＲ）− ［式中Ｘは、Ｆ，ＣＦ3，Ｃｌ基、Ｒは、Ｈ，アルキ
ル、アルキレン基、を示す]で示されるフッ素樹脂を主
成分とする常温乾燥型コーティング材で、塗装すること
を特徴とする、アルミニウム多孔質吸音材。2. The surface of an aluminum porous sound-absorbing material is treated by a general formula-(CF 2 -CFX)-(CH 2 -CHOR)-wherein X is an F, CF 3 , Cl group, and R is H, Alkyl or alkylene group], which is coated with a room-temperature-drying coating material containing a fluororesin as a main component represented by the following formula:
般式 −（ＣＦ2−ＣＨ2）−（Ｘ）−（Ｙ）− ［式中、Ｘは４フッ化エチル基、Ｙは６フッ化プロピル
基を示す。］で示されるフッ素系樹脂を主成分とする常
温乾燥型コーティング材で、塗装することを特徴とす
る、アルミニウム多孔質吸音材。3. The surface of an aluminum porous sound-absorbing material is represented by the general formula-(CF 2 -CH 2 )-(X)-(Y)-wherein X is an ethyl tetrafluoride group and Y is a hexafluoride. Indicates a propyl group. ] A porous aluminum sound absorbing material characterized by being coated with a room temperature drying type coating material containing a fluorine-based resin as a main component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25221197A JPH1193294A (en) | 1997-09-17 | 1997-09-17 | Aluminium porous sound absorbing material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25221197A JPH1193294A (en) | 1997-09-17 | 1997-09-17 | Aluminium porous sound absorbing material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1193294A true JPH1193294A (en) | 1999-04-06 |
Family
ID=17234057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25221197A Pending JPH1193294A (en) | 1997-09-17 | 1997-09-17 | Aluminium porous sound absorbing material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1193294A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2016175167A1 (en) * | 2015-04-30 | 2018-04-05 | 理想科学工業株式会社 | Decorative articles and surface-treated articles |
-
1997
- 1997-09-17 JP JP25221197A patent/JPH1193294A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2016175167A1 (en) * | 2015-04-30 | 2018-04-05 | 理想科学工業株式会社 | Decorative articles and surface-treated articles |
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