JP5940826B2 - Production method of soundproofing material - Google Patents

Production method of soundproofing material Download PDF

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JP5940826B2
JP5940826B2 JP2012028379A JP2012028379A JP5940826B2 JP 5940826 B2 JP5940826 B2 JP 5940826B2 JP 2012028379 A JP2012028379 A JP 2012028379A JP 2012028379 A JP2012028379 A JP 2012028379A JP 5940826 B2 JP5940826 B2 JP 5940826B2
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光雄 堀
光雄 堀
斉藤 晃
晃 斉藤
紳一 高木
紳一 高木
佐藤 和美
和美 佐藤
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Description

本発明は、自動車等の交通運輸関連、建築土木工業関連、生活用品など幅広い用途に適用される防音材及びそれを用いた防音配水管を提供できる、防音材の製造方法に関する。詳細には優れた防音性能を有しており、しかもその防音性能が製造時や施工時に損なわれ難い防音材及び防音配水管を提供できる、防音材の製造方法に関する。 The present invention, transportation-related, such as an automobile, civil construction industry-related, it is possible to provide the acoustic insulation and soundproofing water pipe using the same applies to daily necessities such as a wide range of applications, relates to a process for the preparation of anti-sound material. It has excellent sound insulation performance in detail, yet can provide the soundproof performance is hardly impaired during manufacture or construction acoustic insulation and soundproofing water distribution pipes, a method of manufacturing anti-sound material.

近年、生活環境の変化から防音材に対する要求が高まっており、自動車等の交通運輸関連、建築土木工業関連、生活用品など、幅広い用途に展開がなされている。防音材は騒音を軽減させるための材料であり、用途や使用状態に応じて求められる性能に適合させるべく吸音材や遮音材といった材料を組み合わせて作られている。   In recent years, the demand for soundproofing materials has increased due to changes in the living environment, and has been deployed in a wide range of applications such as transportation related to automobiles, architectural civil engineering, and daily necessities. The soundproofing material is a material for reducing noise, and is made by combining materials such as a sound absorbing material and a sound insulating material in order to adapt to the performance required according to the application and use condition.

例えば自動車の騒音源となるエンジンルームと車室内とを隔てるパネルに適用される防音材としては、発泡樹脂系吸音層と、繊維系吸音層を積層させるとともに、これら吸音層の界面に前記発泡樹脂系吸音層の樹脂と繊維系吸音層の繊維を複合させた遮音層を介装させたものが提案されている(例えば特許文献1参照)。   For example, as a soundproofing material applied to a panel separating an engine room that is a noise source of an automobile and a vehicle interior, a foamed resin-based sound absorbing layer and a fiber-based sound absorbing layer are laminated, and the foamed resin is formed at the interface of these sound absorbing layers. There has been proposed a structure in which a sound insulating layer in which a resin of a system sound absorbing layer and a fiber of a fiber sound absorbing layer are combined is interposed (see, for example, Patent Document 1).

また、配管等の給排水騒音を対策する防音材としては、アスファルト系シートからなる遮音層に、エアークッションシート、グラスウール、フェルトなどからなる吸音層を積層して一体化したものがある(例えば特許文献2参照)。   In addition, as a soundproofing material for countermeasures against water supply / drainage noise such as piping, there is a sound insulation layer made of an asphalt-based sheet laminated with a sound absorption layer made of air cushion sheet, glass wool, felt, etc. (for example, patent document) 2).

特開2009−226675号公報JP 2009-226675 A 特開2003−108145号公報JP 2003-108145 A

ところが、上述の防音材は、いずれも吸音層と遮音層を接着剤で貼り合わせることで一体化されていることから、製造時や施工時に層間に剥離を生じることがあり、この場合、予定していた防音性能を得ることができないという不具合を招いていた。また、各層を貼り合わせて一体化した防音材は、各層をそれぞれ予め成形した後、所定の大きさ、形にカットし、その後、貼り合わせるという多くの工程を要し、その分、製造コストがかかるという問題もあった。   However, since the above-mentioned soundproofing materials are integrated by bonding the sound absorbing layer and the sound insulating layer with an adhesive, peeling may occur between the layers at the time of manufacturing or construction. The problem of not being able to obtain the soundproofing performance that had been incurred was incurred. In addition, the soundproofing material in which each layer is bonded and integrated requires a number of processes in which each layer is pre-formed, cut into a predetermined size and shape, and then bonded together, and the manufacturing cost is reduced accordingly. There was also the problem that it took.

本発明は、このような技術的課題に着目しなされたものであり、優れた防音性能を有しており、しかもその防音性能が製造時や施工時に損なわれ難い防音材及び及びそれを用いた防音配水管を提供できる、防音材の製造方法を提供することを目的とするものである。 The present invention has been made paying attention to such a technical problem, and has an excellent soundproofing performance, and the soundproofing material whose soundproofing performance is difficult to be impaired at the time of manufacture and construction, and the same are used. can provide soundproofing water pipe, it is an object to provide a method for producing anti-sound material.

上記目的を達成するため、請求項1に記載の発明は、
p−(p−トルエンスルホニルアミド)ジフェニルアミン、4,4’−ビス(α,α−ジメチルベンジル)ジフェニルアミン、オクチル化ジフェニルアミン、2,2’−メチレンビス(4−エチル−6−tert−ブチルフェノール)、4,4’−チオビス(3−メチル−6−tert−ブチルフェノール)、及びN,N’−ジ−2−ナフチル−p−フェニレンジアミンの中から選ばれる化合物のいずれか1種若しくは2種以上が含まれているポリマー層と、
繊維層からなる柔軟材層と、
を備えた防音材の製造方法であって、
ポリメタクリル酸メチル(PMMA)またはポリスチレン(PS)の水系エマルジョンと前記化合物とからなるポリマー材料を、固形分で800g/m〜2640g/mの塗布量となるように柔軟材層表面に噴霧することによって塗布し、
該ポリマー材料が柔軟材層内部に一部入り込んだ状態で硬化させることで前記ポリマー層を形成し、
前記ポリマー層のバネ定数が前記柔軟材層のバネ定数よりも大きいことを特徴とする防音材の製造方法をその要旨とした。
In order to achieve the above object, the invention described in claim 1
p- (p-toluenesulfonylamido) diphenylamine, 4,4′-bis (α, α-dimethylbenzyl) diphenylamine, octylated diphenylamine, 2,2′-methylenebis (4-ethyl-6-tert-butylphenol), 4 , 4′-thiobis (3-methyl-6-tert-butylphenol), and one or more compounds selected from N, N′-di-2-naphthyl-p-phenylenediamine A polymer layer,
A soft material layer composed of a fiber layer;
A method of manufacturing a soundproofing material comprising:
Spraying a polymeric material consisting of a water-based emulsion with said compound of polymethyl methacrylate (PMMA) or polystyrene (PS), a flexible material layer surface so that the coating amount of 800g / m 2 ~2640g / m 2 on a solids By applying and
Forming the polymer layer by curing the polymer material partially in the soft material layer,
The gist of the method for producing a soundproofing material is that the spring constant of the polymer layer is larger than the spring constant of the flexible material layer.

請求項2に記載の発明は、化合物がポリマー材料100重量部に対して1〜200重量部の割合で含まれていることを特徴とする請求項1に記載の防音材の製造方法をその要旨とした。   The invention according to claim 2 is characterized in that the compound is contained in an amount of 1 to 200 parts by weight with respect to 100 parts by weight of the polymer material. It was.

本発明の防音材の製造方法は、水系エマルジョンと前記化合物とからなるポリマー材料を柔軟材層表面に噴霧することによって塗布し、該ポリマー材料が柔軟材層内部に一部入り込んだ状態で硬化させることで、製造時や施工時に層間に剥離を生じる恐れがない防音材を製造できる。   The method for producing a soundproofing material of the present invention is applied by spraying a polymer material composed of an aqueous emulsion and the above compound onto the surface of the soft material layer, and is cured in a state where the polymer material partially enters the soft material layer. Thus, it is possible to manufacture a soundproofing material that does not cause any separation between layers during manufacturing or construction.

さらに、本発明の防音材の製造方法は、p−(p−トルエンスルホニルアミド)ジフェニルアミン、4,4’−ビス(α,α−ジメチルベンジル)ジフェニルアミン、オクチル化ジフェニルアミン、2,2’−メチレンビス(4−エチル−6−tert−ブチルフェノール)、4,4’−チオビス(3−メチル−6−tert−ブチルフェノール)、及びN,N’−ジ−2−ナフチル−p−フェニレンジアミンの中から選ばれる化合物のいずれか1種若しくは2種以上が含まれているポリマー層を備え、防音性能が飛躍的に向上した防音材を製造できる。   Furthermore, the method for producing the soundproofing material of the present invention includes p- (p-toluenesulfonylamide) diphenylamine, 4,4′-bis (α, α-dimethylbenzyl) diphenylamine, octylated diphenylamine, 2,2′-methylenebis ( 4-ethyl-6-tert-butylphenol), 4,4′-thiobis (3-methyl-6-tert-butylphenol), and N, N′-di-2-naphthyl-p-phenylenediamine It is possible to produce a soundproofing material having a polymer layer containing any one or two or more compounds and having greatly improved soundproofing performance.

また、本発明の防音材の製造方法は、水系エマルジョンと前記化合物とからなるポリマー材料を、固形分で800g/m〜2640g/mの塗布量となるように柔軟材層表面に備え、防音性能に優れた防音材を製造できる。 A method of manufacturing a soundproofing material of the present invention, a polymeric material consisting of a water-based emulsion with said compound, with a flexible material layer surface so that the coating amount of 800g / m 2 ~2640g / m 2 in solid content, Soundproofing material with excellent soundproofing performance can be manufactured.

本発明によって得られた防音材は、柔軟材層と、この柔軟材層のバネ定数よりも大きなバネ定数を有するポリマー層とを組み合わせたことにより、優れた防音性能が発揮されるようになっている。またこの防音材は、前記ポリマー層がポリマー材料を柔軟材層表面に塗布し、該ポリマー材料が柔軟材層内部に入り込んだ状態で硬化させることで形成されており、柔軟材層内部に入り込んだポリマー層のアンカー効果により、製造時や施工時に層間に剥離を生じる恐れがなく、各層を貼り合わせて一体化した防音材のように、各層をそれぞれ予め成形した後、所定の大きさ、形にカットし、その後、貼り合わせるという多くの工程の必要がなく、その分、製造コストを低減化することができる。 The soundproofing material obtained according to the present invention exhibits excellent soundproofing performance by combining a soft material layer and a polymer layer having a spring constant larger than the spring constant of the soft material layer. Yes. The soundproofing material is formed by applying the polymer material to the surface of the flexible material layer and curing the polymer material in a state where the polymer material has entered the flexible material layer. Due to the anchor effect of the polymer layer, there is no risk of delamination between the layers during manufacturing and construction, and after each layer is pre-shaped like a soundproof material that is laminated and integrated, each layer has a predetermined size and shape. There is no need for many steps of cutting and then bonding, and the manufacturing cost can be reduced accordingly.

本発明によって得られた防音材を示す要部拡大断面図。The principal part expanded sectional view which shows the soundproof material obtained by this invention. 本発明によって得られた防音材の別例を示す要部拡大断面図。The principal part expanded sectional view which shows another example of the soundproof material obtained by this invention.

以下、本発明の防音材の製造方法によって得られる防音材を図面に従ってさらに詳しく説明する。本発明によって得られる防音材は、自動車等の交通運輸関連、建築土木工業関連、生活用品など幅広い用途に適用が可能である。 Hereinafter, the soundproof material obtained by the method for producing a soundproof material of the present invention will be described in more detail with reference to the drawings. The soundproofing material obtained by the present invention can be applied to a wide range of uses such as transportation related to automobiles, construction and civil engineering, and household goods.

本発明によって得られる防音材は柔軟材層とポリマー層とを備えたものである。柔軟材層とポリマー層とはそのバネ定数が互いに相違しており、ポリマー層は、柔軟材層よりも大きなバネ定数を有している。バネ定数とは、荷重を全体として柔らかく受け止め、クッションとして作用する緩衝性の大小の度合(或いは固有振動数)を表す数値であり、その数値が低ければ緩衝性は大きくなり、高ければ緩衝性は小さくなる。本発明によって得られる防音材は、バネ定数が異なる二種の材料を組み合わせることで優れた防音性能を導き出しているのである。 The soundproofing material obtained by the present invention comprises a soft material layer and a polymer layer. The flexible material layer and the polymer layer have different spring constants, and the polymer layer has a larger spring constant than the flexible material layer. The spring constant is a numerical value that represents the degree of buffering (or natural frequency) that acts as a cushion, receiving the load softly as a whole, and the lower the value, the higher the buffering, and the higher the buffering. Get smaller. The soundproofing material obtained by the present invention derives excellent soundproofing performance by combining two kinds of materials having different spring constants.

柔軟材層としては、そのバネ定数がポリマー層のバネ定数よりも小さい限り、その材料や構成、形態は特に限定されない。柔軟材層の厚みも任意であるが、ポリマー層のバネ定数よりも小さく、取り扱い性が低下することにならない範囲で適宜決定すると良い。柔軟材層の具体的な形態としては、発泡樹脂層や繊維層などの多孔質材料を挙げることができる。   The material, configuration, and form of the flexible material layer are not particularly limited as long as the spring constant is smaller than the spring constant of the polymer layer. Although the thickness of the soft material layer is also arbitrary, it may be appropriately determined as long as it is smaller than the spring constant of the polymer layer and does not deteriorate the handleability. Specific examples of the flexible material layer include porous materials such as a foamed resin layer and a fiber layer.

発泡樹脂層としては、例えばウレタン、スチレンブタジエン共重合体、エチレン酢酸ビニル、ポリエチレン、ポリプロピレン、スチレンなどの樹脂を用い、これに発泡剤、触媒などを加えて発泡成形したものである。発泡樹脂層は連続気泡構造とするのが望ましい。発泡倍率としては任意であるが、上記バネ定数を確保するという点からは8〜60倍の倍率が好ましい。また、発泡樹脂層には、穴開け加工やスリット加工などを施すこともできる。   As the foamed resin layer, for example, a resin such as urethane, styrene butadiene copolymer, ethylene vinyl acetate, polyethylene, polypropylene, styrene, or the like is used, and a foaming agent, a catalyst, or the like is added thereto to perform foam molding. It is desirable that the foamed resin layer has an open cell structure. The expansion ratio is arbitrary, but a magnification of 8 to 60 times is preferable from the viewpoint of securing the spring constant. In addition, the foamed resin layer can be subjected to drilling or slitting.

一方、繊維層としては、例えば不織布、フェルト、紙、織物、編物或いはこれらの複合物を挙げることができる。これら繊維層の素材としては、ナイロン6(登録商標)、ナイロン6,6(登録商標)などのポリアミド繊維、ポリエチレン、ポリプロピレンなどのポリオレフィン系繊維、アクリル繊維などの合成繊維、アセテートやレーヨンなどの半合成繊維、ガラス繊維や炭素繊維などの無機繊維を挙げることができ、これらの繊維から選ばれる1種を用いて或いは2種以上を混紡して上記繊維形態とすることができる。   On the other hand, examples of the fiber layer include non-woven fabric, felt, paper, woven fabric, knitted fabric, and composites thereof. Materials for these fiber layers include polyamide fibers such as nylon 6 (registered trademark) and nylon 6, 6 (registered trademark), polyolefin fibers such as polyethylene and polypropylene, synthetic fibers such as acrylic fibers, and half fibers such as acetate and rayon. Inorganic fibers such as synthetic fibers, glass fibers, and carbon fibers can be used, and one type selected from these fibers can be used or two or more types can be blended to obtain the above fiber form.

尚、繊維層を構成する構成繊維の繊維径や繊維長などは任意であり、また繊維層の目付、織組織や編組織などは、該防音材の用途や使用状態に応じて適宜決定すればよい。   In addition, the fiber diameter, fiber length, etc. of the constituent fibers constituting the fiber layer are arbitrary, and the basis weight, woven structure, knitted structure, etc. of the fiber layer may be appropriately determined according to the use and use state of the soundproof material. Good.

この柔軟材層の表面にポリマー層が設けられているのである。ポリマー層は、上記柔軟材層表面にポリマー材料を塗布し、該ポリマー材料が柔軟材層内部に入り込んだ状態でこれを硬化させることで形成されている。この場合、ポリマー層は、ポリマー材料が柔軟材層内部に入り込んだ状態で硬化して形成されているため、柔軟材層内部に入り込んだポリマー層によるアンカー効果により、施工時に層間に剥離を生じる恐れがなく、各層を貼り合わせて一体化した防音材のように、各層をそれぞれ予め成形した後、所定の大きさ、形にカットし、その後、貼り合わせるという多くの工程の必要がなく、その分、製造コストを低減化することができるというメリットがある。   A polymer layer is provided on the surface of the soft material layer. The polymer layer is formed by applying a polymer material to the surface of the flexible material layer and curing the polymer material in a state of entering the flexible material layer. In this case, the polymer layer is formed by curing in a state where the polymer material has entered the flexible material layer, and therefore, the anchor effect by the polymer layer that has entered the flexible material layer may cause separation between layers during construction. There is no need for many processes such as forming each layer in advance, cutting it into a predetermined size and shape, and then bonding the layers together, as in the case of a soundproof material in which each layer is bonded and integrated. There is an advantage that the manufacturing cost can be reduced.

柔軟材層表面に塗布するポリマー材料としては、熱硬化性樹脂、ラテックス及び水系エマルジョン樹脂から選ばれるいずれか1種若しくは2種以上を挙げることができる。熱硬化性樹脂としては、フェノール樹脂、ユリア樹脂、メラミン樹脂、不飽和ポリエステル樹脂、ジアリルフタレート樹脂、エポキシ樹脂、ウレタン樹脂、及びケイ素樹脂から選ばれる1種若しくは2種以上を挙げることができる。   Examples of the polymer material applied to the surface of the flexible material layer may include one or more selected from thermosetting resins, latexes, and aqueous emulsion resins. Examples of the thermosetting resin include one or more selected from phenol resins, urea resins, melamine resins, unsaturated polyester resins, diallyl phthalate resins, epoxy resins, urethane resins, and silicon resins.

ラテックスとしては、ポリブタジエン(PB)、ニトリルゴム(NBR)、天然ゴム(NR)、ブチルゴム(IIR)、スチレンブタジエンゴム(SBR)、クロロプレンゴム(CR)、フッ素系ゴム、及びシリコンゴムから選ばれる1種若しくは2種以上を挙げることができる。   The latex is selected from polybutadiene (PB), nitrile rubber (NBR), natural rubber (NR), butyl rubber (IIR), styrene butadiene rubber (SBR), chloroprene rubber (CR), fluorine rubber, and silicon rubber. A seed | species or 2 or more types can be mentioned.

水系エマルジョン樹脂としては、ポリエチレン樹脂(PE)、ポリプロピレン樹脂(PP)、ポリメタクリル酸メチル(PMMA)、ポリスチレン(PS)、エチレン酢酸ビニル共重合体(EVA)、ポリ酢酸ビニル(PVA)及びポリウレタンから選ばれる1種若しくは2種以上を挙げることができる。   Examples of aqueous emulsion resins include polyethylene resin (PE), polypropylene resin (PP), polymethyl methacrylate (PMMA), polystyrene (PS), ethylene vinyl acetate copolymer (EVA), polyvinyl acetate (PVA), and polyurethane. One type or two or more types may be mentioned.

ポリマー材料には、例えばマイカ鱗片、ガラス片、グラスファイバー、カーボンファイバー、炭酸カルシウム、バライト、沈降硫酸バリウムなどなどのフィラーを充填することができる。尚、フィラーの充填量としては、50〜95重量%の範囲が望ましい。またポリマー材料には、腐食防止剤、染料、酸化防止剤、制電剤、安定剤、湿潤剤などを必要に応じて適宜加えることもできる。   The polymer material can be filled with fillers such as mica scale pieces, glass pieces, glass fibers, carbon fibers, calcium carbonate, barite, and precipitated barium sulfate. In addition, as a filling amount of a filler, the range of 50 to 95 weight% is desirable. In addition, corrosion inhibitors, dyes, antioxidants, antistatic agents, stabilizers, wetting agents, and the like can be appropriately added to the polymer material as necessary.

またポリマー材料には、p−(p−トルエンスルホニルアミド)ジフェニルアミン、4,4’−ビス(α,α−ジメチルベンジル)ジフェニルアミン、オクチル化ジフェニルアミン、2,2’−メチレンビス(4−エチル−6−tert−ブチルフェノール)、4,4’−チオビス(3−メチル−6−tert−ブチルフェノール)、及びN,N’−ジ−2−ナフチル−p−フェニレンジアミンの中から選ばれる化合物のいずれか1種若しくは2種以上を含有させることもできる。   Polymer materials include p- (p-toluenesulfonylamide) diphenylamine, 4,4′-bis (α, α-dimethylbenzyl) diphenylamine, octylated diphenylamine, 2,2′-methylenebis (4-ethyl-6- any one of compounds selected from tert-butylphenol), 4,4′-thiobis (3-methyl-6-tert-butylphenol), and N, N′-di-2-naphthyl-p-phenylenediamine Or 2 or more types can also be contained.

ポリマー材料中にこれらの化合物を含ませることにより、上記柔軟材層と組合せて防音材としたとき、その防音性能が飛躍的に向上することになる。この化合物の含有量としては、樹脂材料100重量部に対して1〜200重量部の割合とすることが望ましい。   When these compounds are included in the polymer material, the soundproofing performance is dramatically improved when the soundproofing material is combined with the soft material layer. The content of this compound is desirably 1 to 200 parts by weight with respect to 100 parts by weight of the resin material.

上記ポリマー材料の柔軟材層への塗布には、ロールナイフコーターなどを用いたロール塗布方法、スプレーガンを用いた噴霧方法、ヘラや刷毛を用いた塗布方法或いは浸漬法などを用いることができる。これらの塗布方法を用いてポリマー材料を柔軟材層の表面に塗布することにより、ポリマー材料は、柔軟材層の内部に一部浸透することになり、この状態でポリマー材料を硬化させることで柔軟材層内部にポリマー材料が浸透し硬化したポリマー層が形成されることになる。   For the application of the polymer material to the soft material layer, a roll coating method using a roll knife coater, a spraying method using a spray gun, a coating method using a spatula or a brush, or a dipping method can be used. By applying the polymer material to the surface of the flexible material layer using these application methods, the polymer material partially penetrates into the flexible material layer. In this state, the polymer material is cured to be flexible. A polymer layer in which the polymer material has permeated and hardened is formed inside the material layer.

上記ポリマー材料の柔軟材層への塗布量としては任意であるが、ポリマー材料の柔軟材層への塗布量は、十分な防音性能を得ることができ、かつポリマー層の一部が柔軟材層内部に入り込むことによるアンカー効果により層間剥離を防止するという効果を得ることができる範囲で適宜決定すると良い。   The amount of the polymer material applied to the soft material layer is arbitrary, but the amount of the polymer material applied to the soft material layer can provide sufficient soundproofing performance, and a part of the polymer layer is a soft material layer. It is preferable to determine appropriately within a range in which an effect of preventing delamination can be obtained by an anchor effect due to entering inside.

また本発明によって得られる防音材は、ポリマー層の柔軟材層が配されない側面に不織布、織物、編物、紙、発泡樹脂シートまたはこれらの複合物から選ばれるいずれか1種からなる多孔質層を配し、前記ポリマー層を構成するポリマー材料が前記多孔質層内部に入り込んだ状態で硬化されている形態とすることもできる。このような態様を採った場合、防音材を構成するポリマー層の外周が多孔質層で覆われているため、その保護が図られると共に、該防音材の取り扱い性が一層向上することになる。多孔質層の構成材料、厚さ、目付は任意であり、ポリマー層の保護、取り扱い性の向上を目的とすることから、外装材としての役割を果たすことができれば十分であり、該防音材の用途や使用状態を考慮して適宜決定すればよい。また、多孔質層を構成する不織布、織物、編物、紙、発泡樹脂シートまたはこれらの複合物のうち、不織布が最も好適である。不織布としては、ケミカルボンド不織布、サーマルボンド不織布或いはエアレイド不織布など乾式不織布が好ましい。 The soundproofing material obtained by the present invention has a porous layer made of any one selected from nonwoven fabric, woven fabric, knitted fabric, paper, foamed resin sheet, or a composite thereof on the side surface on which the flexible layer of the polymer layer is not disposed. The polymer material constituting the polymer layer may be hardened in a state of entering the porous layer. When such an aspect is taken, since the outer periphery of the polymer layer constituting the soundproof material is covered with the porous layer, the protection is achieved and the handleability of the soundproof material is further improved. The constituent material, thickness, and basis weight of the porous layer are arbitrary, and the purpose is to protect the polymer layer and improve the handleability. Therefore, it is sufficient if it can serve as an exterior material. What is necessary is just to determine suitably considering an application and a use condition. Of nonwoven fabrics, woven fabrics, knitted fabrics, paper, foamed resin sheets, or composites comprising these porous layers, nonwoven fabrics are most preferred. The nonwoven fabric is preferably a dry nonwoven fabric such as a chemical bond nonwoven fabric, a thermal bond nonwoven fabric, or an airlaid nonwoven fabric.

尚、本発明は、下記実施例に限定されるものではなく、「特許請求の範囲」に記載された範囲で自由に変更して実施することができる。   In addition, this invention is not limited to the following Example, It can implement freely by changing in the range described in the "Claims".

本発明によって得られる防音材は、自動車等の交通運輸関連、建築土木工業関連、生活用品など、幅広い用途に適用することができ、例えば配管周りに柔軟材層を内側にして取り付けることにより、優れた防音性能を有する防音配水管を得ることができる。この場合、防音材の外周に熱収縮性フィルムを配しておき、この熱収縮性フィルムを熱収縮させることによって、前記防音材を配管周りに取り付けることができ、テープや粘着剤を用いて防音材を配管周りに取り付ける場合に比べて取り付け作業が容易となり、しかも防音材の内側の柔軟材層が配管周り固定されないことから、防音配水管の適用場所に応じてカットする際、防音材をスライドさせることができるという利点がある。 The soundproofing material obtained by the present invention can be applied to a wide range of uses such as transportation related to automobiles, construction and civil engineering industry, daily necessities, etc. In addition, a soundproof water distribution pipe having soundproof performance can be obtained. In this case, by placing a heat-shrinkable film on the outer periphery of the soundproofing material and heat shrinking the heatshrinkable film, the soundproofing material can be attached around the pipe, and soundproofing can be performed using tape or adhesive. The mounting work is easier than when mounting the material around the pipe, and the flexible material layer inside the soundproofing material is not fixed around the pipe, so the soundproofing material can be slid when cutting according to the location where the soundproofing pipe is applied. There is an advantage that can be made.

以下、本発明の防音材の製造方法と、それによって得られる防音材を実施例に従いさらに詳しく説明する。
実施例1
図1に示すように、ウレタンチップを接着剤によってシート状に固めた柔軟材層13の一方面側にSBRラテックスを固形分で800g/mの塗布量となるようにスプレー散布し、前記SBRラテックスの一部が前記柔軟材層13に浸透した状態で乾燥して前記SBRラテックスを硬化させることにより、柔軟材層13よりもバネ定数が大きいポリマー層12を形成して防音材11を作製した。
Hereinafter, the method for producing a soundproofing material of the present invention and the soundproofing material obtained thereby will be described in more detail according to examples.
Example 1
As shown in FIG. 1, the SBR latex is sprayed on the one surface side of the flexible material layer 13 obtained by solidifying a urethane chip into a sheet with an adhesive so as to have a solid content of 800 g / m 2. The SBR latex was cured in a state where a part of the latex penetrated the flexible material layer 13 to cure the SBR latex, thereby forming a polymer layer 12 having a spring constant larger than that of the flexible material layer 13 to produce the soundproof material 11. .

実施例2
ウレタンチップ製の柔軟材層13を用い、この柔軟材層13の表面にSBRラテックスの塗布量が固形分で1600g/mとなるようにスプレー散布して柔軟材層13よりもバネ定数が大きいポリマー層12を形成した以外は実施例1と同様にして防音材11を得た。
Example 2
Using a flexible material layer 13 made of urethane chip, the spring constant is larger than that of the flexible material layer 13 by spraying the surface of the flexible material layer 13 so that the coating amount of SBR latex is 1600 g / m 2 in solid content. A soundproof material 11 was obtained in the same manner as in Example 1 except that the polymer layer 12 was formed.

実施例3
ウレタンチップ製の柔軟材層13を用い、この柔軟材層13の表面にSBRラテックスの塗布量が固形分で2640g/mとなるようにスプレー散布して柔軟材層13よりもバネ定数が大きいポリマー層12を形成した以外は実施例1と同様にして防音材11を得た。
Example 3
Using a flexible material layer 13 made of urethane chip, the spring constant is larger than that of the flexible material layer 13 by spraying the surface of the flexible material layer 13 so that the coating amount of SBR latex is 2640 g / m 2 in solid content. A soundproof material 11 was obtained in the same manner as in Example 1 except that the polymer layer 12 was formed.

実施例4
図1に示すように、ウレタンチップを接着剤によってシート状に固めた柔軟材層13の一方面側にPVAの水系エマルジョンを固形分で800g/mの塗布量となるようにスプレー散布し、前記PVAの一部が前記柔軟材層13に浸透した状態で乾燥して前記PVAを硬化させることにより、柔軟材層13よりもバネ定数が大きいポリマー層12を形成して防音材11を作製した。
Example 4
As shown in FIG. 1, a PVA aqueous emulsion is spray-sprayed on one surface side of a flexible material layer 13 in which a urethane chip is solidified with an adhesive so as to have a solid content of 800 g / m 2 , The PVA was dried in a state where a part of the PVA penetrated the flexible material layer 13 to cure the PVA, thereby forming a polymer layer 12 having a spring constant larger than that of the flexible material layer 13 to produce a soundproof material 11. .

実施例5
ウレタンチップ製の柔軟材層13を用い、この柔軟材層13の表面にPVAの水系エマルジョンの塗布量が固形分で1600g/mとなるようにスプレー散布して柔軟材層13よりもバネ定数が大きいポリマー層12を形成した以外は実施例4と同様にして防音材11を得た。
Example 5
Using a flexible material layer 13 made of urethane chip, the spring constant of the flexible material layer 13 is sprayed and sprayed on the surface of the flexible material layer 13 so that the coating amount of the PVA aqueous emulsion is 1600 g / m 2 in solid content. A soundproof material 11 was obtained in the same manner as in Example 4 except that the polymer layer 12 having a large thickness was formed.

実施例6
ウレタンチップ製の柔軟材層13を用い、この柔軟材層13の表面にPVAの塗布量が固形分で2640g/mとなるようにスプレー散布して柔軟材層13よりもバネ定数が大きいポリマー層12を形成した以外は実施例4と同様にして防音材11を得た。
Example 6
A polymer having a spring constant larger than that of the soft material layer 13 by using a soft material layer 13 made of urethane chips and spraying the surface of the soft material layer 13 so that the applied amount of PVA is 2640 g / m 2 in solid content. A soundproof material 11 was obtained in the same manner as in Example 4 except that the layer 12 was formed.

実施例7
図2に示すように、フェルトからなる柔軟材層23を用い、この柔軟材層23の一方面側にSBRラテックスを固形分で800g/mの塗布量となるようにスプレー散布し、前記SBRラテックスの一部が前記柔軟材層23に浸透した状態で乾燥して前記SBRラテックスを硬化させることにより、柔軟材層23よりもバネ定数が大きいポリマー層22を形成して防音材21を作製した。
Example 7
As shown in FIG. 2, a soft material layer 23 made of felt is used, and SBR latex is sprayed on the one surface side of the soft material layer 23 so as to have a solid content of 800 g / m 2. The SBR latex was dried in a state where a part of the latex penetrated the flexible material layer 23 to cure the SBR latex, thereby forming a polymer layer 22 having a spring constant larger than that of the flexible material layer 23 to produce the soundproof material 21. .

実施例8
フェルト製の柔軟材層23を用い、この柔軟材層23の表面にSBRラテックスの塗布量が固形分で1600g/mとなるようにスプレー散布して柔軟材層23よりもバネ定数が大きいポリマー層12を形成した以外は実施例7と同様にして防音材21を得た。
Example 8
A polymer having a spring constant larger than that of the soft material layer 23 by using a soft material layer 23 made of felt and spraying the surface of the soft material layer 23 so that the applied amount of SBR latex is 1600 g / m 2 in solid content. A soundproof material 21 was obtained in the same manner as in Example 7 except that the layer 12 was formed.

実施例9
フェルト製の柔軟材層23を用い、この柔軟材層23の表面にSBRラテックスの塗布量が固形分で2640g/mとなるようにスプレー散布して柔軟材層23よりもバネ定数が大きいポリマー層22を形成した以外は実施例7と同様にして防音材21を得た。
Example 9
A polymer having a spring constant larger than that of the soft material layer 23 by using a soft material layer 23 made of felt and spraying the surface of the soft material layer 23 so that the coating amount of SBR latex is 2640 g / m 2 in solid content. A soundproof material 21 was obtained in the same manner as in Example 7 except that the layer 22 was formed.

実施例10
図2に示すように、フェルトからなる柔軟材層23を用い、この柔軟材層23の一方面側にPVAの水系エマルジョンを固形分で800g/mの塗布量となるようにスプレー散布し、前記PVAの一部が前記柔軟材層23に浸透した状態で乾燥して前記PVAを硬化させることにより、柔軟材層23よりもバネ定数が大きいポリマー層12を形成して防音材21を作製した。
Example 10
As shown in FIG. 2, a soft material layer 23 made of felt is used, and an aqueous emulsion of PVA is sprayed on one surface side of the soft material layer 23 so as to have a solid content of 800 g / m 2 . The PVA was dried in a state where a part of the PVA penetrated the flexible material layer 23 to cure the PVA, thereby forming a polymer layer 12 having a spring constant larger than that of the flexible material layer 23 to produce a soundproof material 21. .

実施例11
フェルト製の柔軟材層23を用い、この柔軟材層23の表面にPVAの水系エマルジョンの塗布量が固形分で1600g/mとなるようにスプレー散布して柔軟材層23よりもバネ定数が大きいポリマー層22を形成した以外は実施例10と同様にして防音材21を得た。
Example 11
A felt soft material layer 23 is used, and the surface of this soft material layer 23 is spray-sprayed so that the coating amount of the aqueous PVA emulsion is 1600 g / m 2 in terms of solid content. A soundproof material 21 was obtained in the same manner as in Example 10 except that the large polymer layer 22 was formed.

実施例12
フェルト製の柔軟材層23を用い、この柔軟材層23の表面にPVAの塗布量が固形分で2640g/mとなるようにスプレー散布して柔軟材層23よりもバネ定数が大きいポリマー層22を形成した以外は実施例10と同様にして防音材21を得た。
Example 12
A polymer layer having a spring constant larger than that of the soft material layer 23 by using a felt soft material layer 23 and spraying the surface of the soft material layer 23 so that the applied amount of PVA is 2640 g / m 2 in solid content. A soundproof material 21 was obtained in the same manner as in Example 10 except that 22 was formed.

比較例1
図1に示すように、ウレタンチップを接着剤によってシート状に固めた柔軟材層の一方面に、オレフィン系樹脂を用いて予めシート状に成形した遮音シートを接着剤を介して貼り合わせてなる防音材を作製した。
Comparative Example 1
As shown in FIG. 1, a sound insulating sheet formed in advance into a sheet shape using an olefin resin is bonded to one surface of a flexible material layer obtained by solidifying a urethane chip into a sheet shape with an adhesive via an adhesive. A soundproofing material was produced.

上記実施例1〜12並びに比較例1の各防音材をそれぞれ配管の周りに柔軟材層が内側となるように巻き付けると共に、該防音材の表面に筒状の熱収縮性フィルムを配置し、該熱収縮性フィルムを熱収縮させることで防音材を配管周りに固定して防音配水管を作製した。   Each of the soundproofing materials of Examples 1 to 12 and Comparative Example 1 is wound around the pipe so that the flexible material layer is inside, and a tubular heat-shrinkable film is disposed on the surface of the soundproofing material, The heat-shrinkable film was heat-shrinked to fix the soundproofing material around the pipe, thereby producing a soundproof water distribution pipe.

得られた実施例1〜12、並びに比較例1の各防音材を取り付けた防音配水管について、その防音性能を評価した。その評価方法は、立てて配置した防音配水管に水を流したときの排水騒音を該防音配水管から1m離れた所に設置した騒音計(LA−210、小野測器株式会社製)で拾い、騒音レベルを測定し、FFTアナライザー(CF−350、小野測器株式会社製)で周波数分析を行った。尚、サンプルシートを取り付けていない配管等(排水管)に水を流した場合の排水騒音についても測定した。   The soundproofing performance of the soundproof water distribution pipes to which the obtained soundproofing materials of Examples 1 to 12 and Comparative Example 1 were attached was evaluated. The evaluation method is to pick up the drainage noise when water is passed through the soundproof water pipe arranged upright with a noise meter (LA-210, manufactured by Ono Sokki Co., Ltd.) located 1 m away from the soundproof water pipe. The noise level was measured, and frequency analysis was performed with an FFT analyzer (CF-350, manufactured by Ono Sokki Co., Ltd.). In addition, it measured also about the drainage noise at the time of flowing water through piping etc. (drainage pipe) which has not attached the sample sheet.

各防音配水管の防音性能は、比較例1に係る防音配水管が71.7dBであったのに対し、実施例1に係る防音配水管が86.6dB、実施例2に係る防音配水管が71.4dB、実施例3に係る防音配水管が71.7dB、実施例4に係る防音配水管が79.4dB、実施例5に係る防音配水管が72.9dB、実施例6に係る防音配水管が71.0dB、実施例7に係る防音配水管が75.0dB、実施例8に係る防音配水管が72.2dB、実施例9に係る防音配水管が70.8dB、実施例10に係る防音配水管が71.9dB、実施例11に係る防音配水管が70.0dB、実施例12に係る防音配水管が71.0dBとなり、本発明の防音材の製造方法によって得られる防音材が、従来の防音材と同程度の優れた防音性能を有していることが確認された。 The soundproof performance of each soundproof water distribution pipe was 71.7 dB for the soundproof water distribution pipe according to Comparative Example 1, whereas that of the soundproof water distribution pipe according to Example 1 was 86.6 dB. 71.4 dB, the soundproof water distribution pipe according to the third embodiment is 71.7 dB, the soundproof water distribution pipe according to the fourth embodiment is 79.4 dB, the soundproof water distribution pipe according to the fifth embodiment is 72.9 dB, and the soundproof distribution according to the sixth embodiment. The water pipe is 71.0 dB, the soundproof water pipe according to the seventh embodiment is 75.0 dB, the soundproof water pipe according to the eighth embodiment is 72.2 dB, the soundproof water pipe according to the ninth embodiment is 70.8 dB, and the tenth embodiment. The soundproof water distribution pipe is 71.9 dB, the soundproof water distribution pipe according to Example 11 is 70.0 dB, the soundproof water distribution pipe according to Example 12 is 71.0 dB, and the soundproof material obtained by the method for producing a soundproof material of the present invention is Excellent soundproofing performance comparable to conventional soundproofing materials It was confirmed that there.

11、21・・・防音材
12、22・・・ポリマー層
13、23・・・柔軟材層
11, 21 ... Soundproof material 12, 22 ... Polymer layer 13, 23 ... Soft material layer

Claims (2)

p−(p−トルエンスルホニルアミド)ジフェニルアミン、4,4’−ビス(α,α−ジメチルベンジル)ジフェニルアミン、オクチル化ジフェニルアミン、2,2’−メチレンビス(4−エチル−6−tert−ブチルフェノール)、4,4’−チオビス(3−メチル−6−tert−ブチルフェノール)、及びN,N’−ジ−2−ナフチル−p−フェニレンジアミンの中から選ばれる化合物のいずれか1種若しくは2種以上が含まれているポリマー層と、
繊維層からなる柔軟材層と、
を備えた防音材の製造方法であって、
ポリメタクリル酸メチル(PMMA)またはポリスチレン(PS)の水系エマルジョンと前記化合物とからなるポリマー材料を、固形分で800g/m〜2640g/mの塗布量となるように柔軟材層表面に噴霧することによって塗布し、
該ポリマー材料が柔軟材層内部に一部入り込んだ状態で硬化させることで前記ポリマー層を形成し、
前記ポリマー層のバネ定数が前記柔軟材層のバネ定数よりも大きいことを特徴とする防音材の製造方法。
p- (p-toluenesulfonylamido) diphenylamine, 4,4′-bis (α, α-dimethylbenzyl) diphenylamine, octylated diphenylamine, 2,2′-methylenebis (4-ethyl-6-tert-butylphenol), 4 , 4′-thiobis (3-methyl-6-tert-butylphenol), and one or more compounds selected from N, N′-di-2-naphthyl-p-phenylenediamine A polymer layer,
A soft material layer composed of a fiber layer;
A method of manufacturing a soundproofing material comprising:
Spraying a polymeric material consisting of a water-based emulsion with said compound of polymethyl methacrylate (PMMA) or polystyrene (PS), a flexible material layer surface so that the coating amount of 800g / m 2 ~2640g / m 2 on a solids By applying and
Forming the polymer layer by curing the polymer material partially in the soft material layer,
A method for producing a soundproof material, wherein the spring constant of the polymer layer is larger than the spring constant of the flexible material layer.
化合物がポリマー材料100重量部に対して1〜200重量部の割合で含まれていることを特徴とする請求項1に記載の防音材の製造方法。   The method for producing a soundproofing material according to claim 1, wherein the compound is contained in an amount of 1 to 200 parts by weight with respect to 100 parts by weight of the polymer material.
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