JPS5890700A - Sound isolating material - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 本発明は、繊維強化プラスチック（以下、ＦＲＰと称す
る）からなる遮音性に優れた遮音材に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sound insulating material made of fiber reinforced plastic (hereinafter referred to as FRP) and having excellent sound insulating properties.

近年、車輛、自動車、船舶、事務機、機械等の分野に於
て軽量化が促進され９、遮音材が種々の用途に使用され
るようになった。In recent years, weight reduction has been promoted in the fields of vehicles, automobiles, ships, office machines, machinery, etc.9, and sound insulating materials have come to be used for various purposes.

従来、それぞれの分野に於ては鉄構造物が主体であり、
騒音源に対する対策としては例えば、鉄板等でカバーを
する等が行なわれ、その鉄板等の発振音に対してはダン
ピング材等を適用する方法がとられて来た。Traditionally, steel structures have been the main focus in each field,
Countermeasures against noise sources include, for example, covering them with iron plates, etc., and methods of applying damping materials and the like have been taken to deal with the noise oscillated by the iron plates.

一方、軽量化が進むにつれて装置自体又は装置の一部分
が軽量化の為にＦＲＰで置き変わる傾向になり、必然的
に、騒音に対しては逆行する事となり、遮音性は従来の
鉄板等で行われていた時よりも悪くなる欠点があった。On the other hand, as weight reduction progresses, there is a tendency for the equipment itself or a part of the equipment to be replaced with FRP to reduce weight, which inevitably results in a regression in terms of noise, and sound insulation cannot be achieved with conventional steel plates etc. It had the disadvantage of being worse than when it was known.

本発明は、このような事情にかんがみて、ＦＲＰ構造体
の遮音性を高めるためになされたもので、遮音性に優れ
たＦＲＰ　遮音材を提供することを目的とする。In view of these circumstances, the present invention was made to improve the sound insulation properties of FRP structures, and an object of the present invention is to provide an FRP sound insulation material with excellent sound insulation properties.

このため、本発明の遮音材は、樹脂１００重量部に対し
比重４．０以上の金属もしくは金属化合物又はこれらの
混合物を少なくとも３００重量部添加した樹脂配合物を
線維強化プラスチックに積層させてなることを特徴とす
る特に事務機器のハウジング、エンジンカバー等の遮音
性、制振性の両特性と機械的強度の必要なカバー材とし
て利用される。Therefore, the sound insulating material of the present invention is made by laminating a resin compound, in which at least 300 parts by weight of a metal, a metal compound, or a mixture thereof with a specific gravity of 4.0 or more is added to 100 parts by weight of the resin, on a fiber-reinforced plastic. It is particularly used as a cover material for office equipment housings, engine covers, etc. that requires both sound insulation and vibration damping properties and mechanical strength.

以下、本発明の構成について詳しく説明する。Hereinafter, the configuration of the present invention will be explained in detail.

本発明において用いる樹脂としては、不飽和ポリエステ
ル樹脂、エポキシ樹脂、変性エポキ／槓Ｊ　ｌ＋Ｂ　、
ンリコン樹脂、アリル樹脂、ビニルエステル位・１脂、
メラミン樹脂等の熱硬化性樹脂、又はナイロン、ポリス
チレ／、ポリカーボネート、スチレン−アクリロニトリ
ル、ＡＢＳ、アセタール、ポリエチレン、ポリプロピレ
ン、ポリｊ焦化ビニルなどの熱射・塑性樹脂である。こ
れら−の樹脂には、必要に応じて、硬化剤、触媒等の添
加物、およびガラス繊維などが添加される。The resins used in the present invention include unsaturated polyester resins, epoxy resins, modified epoxy resins,
lincon resin, allyl resin, vinyl ester position/1 fat,
These are thermosetting resins such as melamine resin, or thermal radiation/plastic resins such as nylon, polystyrene/polycarbonate, styrene-acrylonitrile, ABS, acetal, polyethylene, polypropylene, and polyj-pyrovinyl. Additives such as curing agents, catalysts, glass fibers, etc. are added to these resins as necessary.

筐だ、本発明に於て使用される金属、金属化合物として
は、粉末形態のもので、遮音性能あるいは経済性の観点
から、比重としては好ましくは４，０以上で化学的に安
定なものが望ましい。The metals and metal compounds used in the present invention are in powder form, preferably have a specific gravity of 4.0 or more and are chemically stable from the viewpoint of sound insulation performance or economical efficiency. desirable.

これらの例としては、鉄、鉛、モリブデン、銅、亜鉛、
等の金属単体、又はこれらの化合物、例えば、酸化鉄（
第一鉄、第二鉄、四三酸化鉄）、酸化鉛、酸化ｗＪ（第
一銅、第二銅）、酸化亜鉛、酸化モリブデン等の金属酸
化物、あるいは硫酸バリウム等の無機充填剤等であり、
経済性及び入手容易性等から、鉛、鉄、及びこれらの酸
化物が時に窒ましい。又、用途等にかんがみて、これら
のものを適宜に混合して使用することが可能なことは言
うまでもない。Examples of these are iron, lead, molybdenum, copper, zinc,
Metals such as metals, or compounds thereof, such as iron oxide (
metal oxides such as ferrous, ferric, triiron tetroxide), lead oxide, wJ oxide (cuprous, cupric oxide), zinc oxide, molybdenum oxide, or inorganic fillers such as barium sulfate. can be,
Lead, iron, and their oxides are sometimes preferred due to economic efficiency and availability. In addition, it goes without saying that these materials can be mixed and used as appropriate depending on the intended use.

又、本発明に於ける金属粉末用のバインダーとしての上
記樹脂としては、使用するＦＲＰ（ＳＭＣ（シート・モ
ールディング１コンパウンド））との兼合いにもよるが
、不飽和ポリエステルＩＩ脂、エポキシ樹脂、変性エポ
キシ樹脂、ビニルエステル樹脂等がＦＲＰとの接着性の
点から望捷しく、又、　この樹脂と金属粉末の混合比率
は、金属粉末の比重にも依るが、有効な遮音性能を得る
為には樹脂１００重量部に対５３００重量部以上が望ま
しい。In addition, the above-mentioned resin as a binder for metal powder in the present invention may include unsaturated polyester II resin, epoxy resin, Modified epoxy resin, vinyl ester resin, etc. are preferable from the viewpoint of adhesion with FRP, and the mixing ratio of this resin and metal powder depends on the specific gravity of the metal powder, but in order to obtain effective sound insulation performance, is desirably 5,300 parts by weight or more based on 100 parts by weight of the resin.

第１図に、ＦＲＰ板１を積層させてなる従来の遮音材の
一例を示す。第２図および第一３図は、本発明の実施例
を示したもので、本発明の遮音材は、例えば、ＦＲＰ板
１の間に樹脂配合物２をはさみこむように、積層させる
か（第２図）又はＦＲＰ板１に樹脂配合物２を交互的に
積層させた（第３図）形態のものである。FIG. 1 shows an example of a conventional sound insulating material made of laminated FRP boards 1. 2 and 13 show examples of the present invention, and the sound insulating material of the present invention may be laminated, for example, by sandwiching the resin compound 2 between the FRP plates 1 or (Fig. 2) or in which the resin compound 2 is alternately laminated on the FRP board 1 (Fig. 3).

本発明の最大の利点は、従来のＦＲＰ単体では遮音性を
得る為にはかなりの厚みを必要としたのに対］〜で、本
発明において金属粉末、金属化合物粉末を使用する事に
より、薄いもので充分χ１応出来、製品のコスト低減に
大きな寄与をするのが口丁能となることである。The biggest advantage of the present invention is that while conventional FRP alone required a considerable thickness to obtain sound insulation properties], the present invention uses metal powder and metal compound powder to make it thinner. It is the ability of the mouth to fully respond to χ1 that makes a significant contribution to reducing the cost of the product.

以下、実施例により本発明を示すが、これらの実施例は
単に例示の為に記載されたものであるから、本発明の範
囲を制限すべきものではない。The present invention will be illustrated below with reference to examples; however, these examples are merely given for illustrative purposes and should not limit the scope of the present invention.

実施例１〜３ 比重１．８の市販の不飽和ポリエステルのＳＭＣ１龍厚
を両側にし、表１の金属粉末含有コンパウンドを中間に
Ｉ　ＩＩｍ厚に塗布し、１６０’Ｃｘ３分間加圧成型し
た（第２図）。Examples 1 to 3 A commercially available unsaturated polyester with a specific gravity of 1.8 was coated on both sides with a thickness of SMC1, and the metal powder-containing compound shown in Table 1 was applied in the middle to a thickness of IIm, and pressure molded at 160'C for 3 minutes. Figure 2).

表　　１ 加圧成型したそれぞれを無書箱を用いてｐＨ性能を測定
した結果を表２に示す。Table 1 Table 2 shows the results of measuring the pH performance of each pressure-molded product using a blank box.

（本頁以下余白） 実施例４〜７ 比Ｎ１．８の市販のエポキ７のブリグレーグ１ｍｍ厚を
両側にし、表３の金属粉末含廟コ／パウンドを中間にｌ
　ｍｍ厚に塗布し、常温硬化し加圧成型した（第２図）
。(Margins below this page) Examples 4 to 7 A 1 mm thick brig of commercially available epoxy 7 with a ratio of N1.8 was placed on both sides, and the metal powder-containing co/pound shown in Table 3 was placed in the middle.
It was applied to a thickness of mm, cured at room temperature, and molded under pressure (Figure 2).
.

表　　３ 成型したそれぞれを無響箱を用いて遮音性ｎヒを測定し
た結果を表４に示す。Table 3 Table 4 shows the results of measuring the sound insulation properties of each molded product using an anechoic box.

実施例１〜７と比較例を比較すると、同厚み（３朋）で
はあるが金属粉末含有する事により面密度が増加し、２
５０Ｈ２〜５ＫＨｚＫ亘っておおよそ４〜６ｄＢ程度の
遮音性能が増加している。Comparing Examples 1 to 7 and Comparative Example, although the thickness is the same (3 mm), the areal density increases due to the inclusion of metal powder, and 2 mm.
The sound insulation performance increases by approximately 4 to 6 dB over the range of 50H2 to 5KHz.

同、本発明の第２図と厚みを同厚みにし、市販の不飽和
ポリエステルＦＲＰと本発明の実施例１の中間層配合を
多段に成型したもの（第３図）で遮音性能を確認したが
、実施例１の結果と同様な納本を示した（実施例８）。Similarly, the sound insulation performance was confirmed using a product (Figure 3) in which the thickness was the same as that in Figure 2 of the present invention, and the commercially available unsaturated polyester FRP and the intermediate layer composition of Example 1 of the present invention were molded in multiple stages. , the deposit was similar to that of Example 1 (Example 8).

又、本発明はＦＲＰに限らすＦＲＴＰについても同様な
観点から遮音性能の増加は容易に類推出来る。Moreover, the present invention is limited to FRP, but an increase in sound insulation performance can be easily inferred from the same viewpoint with respect to FRTP.

本発明の２ｍｍの成形材料を１０龍巾Ｘ２００ｍｍ長さ
に切断し、複素弾性率測定装置を用いて測定した制撮性
能を表５に示す。Table 5 shows the photographic performance measured by cutting the 2 mm molding material of the present invention into 10 width x 200 mm length using a complex modulus measuring device.

表　　　５ 上記から明らかＬように、本発明はＦＲＰと金輌、金楓
化合物又はそれらの混合物を含有する樹脂との組合せに
より、遮音性能を増加させる事により、同厚みのＦＲＰ
単体と比較した場合、優れた遮音性能を有する利点があ
る。Table 5 As is clear from the above, the present invention improves the sound insulation performance by combining FRP with a resin containing a gold maple compound, a gold maple compound, or a mixture thereof.
When compared to a single unit, it has the advantage of having excellent sound insulation performance.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は従来の遮音材の積層構造の一例を示した断面図
、第２図は本発明の遮音材の積層構造の一例を示した断
面図、第３図は積層構造の他の例を示した断面図である
。 １・・・ＦＲＰ　＆、２・・・樹脂配合物。 第１図 第２１Ａ 第３図Fig. 1 is a cross-sectional view showing an example of the laminated structure of a conventional sound insulating material, Fig. 2 is a cross-sectional view showing an example of the laminated structure of the sound insulating material of the present invention, and Fig. 3 is a cross-sectional view showing another example of the laminated structure of the sound insulating material of the present invention. FIG. 1...FRP &, 2...Resin compound. Figure 1 Figure 21A Figure 3

Claims (1)

【特許請求の範囲】[Claims] 樹脂１００重量部に対し比重４．０以上の金属・もしく
は金鵬化合物又はこれらの混合物を少なくとも３００重
量部添加した樹脂配合物を繊維強化プラスチックに積層
させてなる遮音材。A sound insulating material made by laminating a resin compound, in which at least 300 parts by weight of a metal or a metal compound having a specific gravity of 4.0 or more or a mixture thereof is added to 100 parts by weight of a resin, on a fiber-reinforced plastic.