JP4490669B2 - Resin composition for transparent damping material and damping material - Google Patents
Resin composition for transparent damping material and damping material Download PDFInfo
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Description
本発明は、住宅、マンション、オフィスビルなどの住宅建造物、高速道路、高架橋、鉄道軌道などの各種構造物や、自動車、鉄道車両、船舶などの各種車両、更には家庭電気機器、ＯＡ機器などにおいて発生する振動や騒音を低減するために、特に透明性が要求される部材（例えば、窓ガラス、透明防音壁など）に好適に使用される透明制振材料用樹脂組成物及び制振材料に関する。 The present invention relates to various structures such as houses, condominiums, office buildings, etc., highways, viaducts, railway tracks, various vehicles such as automobiles, railway vehicles, ships, home electrical equipment, OA equipment, etc. The present invention relates to a resin composition for a transparent vibration damping material and a vibration damping material that are suitably used for members that require transparency in particular (for example, window glass, transparent soundproof walls, etc.) in order to reduce vibration and noise generated in .
従来、制振性の指標として、材料の貯蔵弾性係数（Ｅ’）で損失弾性係数（Ｅ”）を除した損失正接（ｔａｎδ＝Ｅ”／Ｅ’）が使用されており、損失正接が大きいほど材料は振動吸収性に優れているといえる。一般にこの損失正接の値が１以上であると優れた制振材料とされるが、更なる制振性の向上が望まれており、例えば特許文献１には、極性側鎖を有するポリマーに塩素化パラフィンやスルフェンアミド系誘導体物質を配合してなる減衰材料が開示されている。 Conventionally, the loss tangent (tan δ = E ″ / E ′) obtained by dividing the loss elastic modulus (E ″) by the storage elastic modulus (E ′) of the material has been used as a vibration damping index, and the loss tangent is large. It can be said that the material is excellent in vibration absorption. In general, when the value of the loss tangent is 1 or more, it is considered as an excellent vibration damping material. However, further improvement in vibration damping is desired. For example, Patent Document 1 discloses that a polymer having a polar side chain is chlorine. A damping material comprising a compounded paraffin or a sulfenamide derivative is disclosed.
しかしながら、上記の減衰材料は、透明性の点では必ずしも十分とはいえず、例えば、窓ガラスや透明防音壁などの透明性を要求される部材に用いることは困難であった。 However, the above-described attenuation material is not necessarily sufficient in terms of transparency, and for example, it has been difficult to use it for a member that requires transparency, such as a window glass and a transparent soundproof wall.
通常、透明性の指標としては「ヘイズ値」が使用され、一般に上記のような透明用途においてはヘイズ値が１０未満であることが要求されるが、本発明者の検討によれば、上記特許文献１の減衰材料においては、十分なヘイズ値を得ることは必ずしも容易ではなかった。 Usually, the “haze value” is used as an index of transparency, and in general, the haze value is required to be less than 10 in the transparent application as described above. In the damping material of Document 1, it is not always easy to obtain a sufficient haze value.
この問題を解決するため、特許文献２においては本出願人より、塩素含有量２０〜７０重量％の塩素含有熱可塑性樹脂と、塩素含有量３０〜７０重量％の塩素化パラフィンと、ロジン系化合物とを含む組成物からなる透明制振シートが開示されている。しかしこの場合には、ヘイズ値が１．７〜３．５の水準の優れた透明性を発現することが可能となるものの、その制振性能は必ずしも十分ではなかった。 In order to solve this problem, in Patent Document 2, the applicant of the present application has disclosed a chlorine-containing thermoplastic resin having a chlorine content of 20 to 70% by weight, a chlorinated paraffin having a chlorine content of 30 to 70% by weight, and a rosin compound. A transparent vibration damping sheet comprising a composition containing However, in this case, although excellent transparency with a haze value of 1.7 to 3.5 can be expressed, the vibration damping performance is not always sufficient.
本発明の目的は、上記従来の制振材料の問題点に鑑み、高い制振性を発現する振動減衰材料であって、透明性を必要とする用途に好適な透明制振材料用樹脂組成物及び制振材料を提供することにある。 An object of the present invention is a vibration damping material that exhibits high vibration damping properties in view of the problems of the conventional vibration damping material, and is a resin composition for transparent vibration damping material that is suitable for applications that require transparency. And providing damping material.
請求項１記載の透明制振材料用樹脂組成物は、アクリル系モノマー又はスチレン系モノマーを主たる構成成分とするポリマーと、２０℃における粘度が８００〜１００，０００ｃｐｓの塩素化パラフィンである可塑剤とからなり、可塑剤のＳＰ値と、ポリマーを構成するモノマー成分のＳＰ値との差の絶対値が０．９以下であり、可塑剤の含有量が、ポリマー１００重量部に対して、１５０〜１０００重量部であることを特徴とする。
The resin composition for a transparent vibration damping material according to claim 1 includes a polymer mainly composed of an acrylic monomer or a styrene monomer, and a plasticizer that is a chlorinated paraffin having a viscosity at 20 ° C of 800 to 100,000 cps. consists, the SP value of the plasticizer state, and are the absolute value of 0.9 or less of the difference between the SP values of the monomer components constituting the polymer, the content of plasticizer, relative to 100 parts by weight of the polymer, 150 and wherein 1000 parts by weight der Rukoto.
また、可塑剤が塩素化パラフィンであることを特徴とする。
The plasticizer is chlorinated paraffin.
請求項２記載の制振材料は、請求項１記載の透明制振材料用樹脂組成物を用いてなることを特徴とする。
Damping material according to claim 2 is characterized by using the claim 1 Symbol placing transparent vibration damping material resin composition.
以下、本発明を詳細に説明する。
本発明におけるアクリル系モノマー又はスチレン系モノマーを主たる構成成分とするポリマーとしては、ホモポリマーやコポリマーなど特に限定されず、例えば、ポリアクリル酸エステル、ポリメタクリル酸エステル、ポリスチレン、及びこれらのコポリマー、若しくはエチレン−アクリル酸エステルコポリマー、エチレン−メタクリル酸エステルコポリマーなどが挙げられる。
Hereinafter, the present invention will be described in detail.
The polymer mainly comprising an acrylic monomer or a styrene monomer in the present invention is not particularly limited, such as a homopolymer or a copolymer. For example, polyacrylic acid ester, polymethacrylic acid ester, polystyrene, and copolymers thereof, or Examples include ethylene-acrylic acid ester copolymers and ethylene-methacrylic acid ester copolymers.
上記コポリマー中に含まれるアクリル系モノマー又はスチレン系モノマー以外の構成成分の種類や量については、本発明の効果を損なわない限り特に限定されるものではないが、凝集を防ぐためランダムコポリマー、若しくはブロックコポリマーであることが好ましい。 The type and amount of constituents other than the acrylic monomer or styrene monomer contained in the copolymer are not particularly limited as long as the effects of the present invention are not impaired, but a random copolymer or block is used to prevent aggregation. A copolymer is preferred.
また、上記ポリマー自身のヘイズ値としてはより小さいものが好適であり、また屋外用途に使用される場合にはポリマー自身の耐候性がより高いものが好適である。 Further, the haze value of the polymer itself is preferably smaller, and when it is used for outdoor use, the polymer itself having higher weather resistance is preferred.
本発明における可塑剤としては、２０℃における粘度が８００〜１００，０００ｃｐｓのものであれば特に限定されず、例えば、塩素化パラフィン、フタル酸エステル、アジピン酸エステル、リン酸エステル、エポキシ化ポリブタジエン、エポキシ化脂肪酸エステル、トリメリット酸エステル、ピロメリット酸エステル、セバチン酸エステル、クエン酸エステルなどが挙げられる。 The plasticizer in the present invention is not particularly limited as long as the viscosity at 20 ° C. is 800 to 100,000 cps. For example, chlorinated paraffin, phthalic acid ester, adipic acid ester, phosphoric acid ester, epoxidized polybutadiene, Examples thereof include epoxidized fatty acid esters, trimellitic acid esters, pyromellitic acid esters, sebacic acid esters, and citric acid esters.
上記粘度が８００ｃｐｓ未満の場合には得られる樹脂組成物が柔らかくなりすぎて成形性や取り扱い性が悪くなることがあり、上記粘度が１００，０００ｃｐｓを越える場合には、可塑剤自身の取り扱いが困難になったり、また、上記ポリマーとの相溶性が悪くなったりすることがある。 When the viscosity is less than 800 cps, the resulting resin composition may be too soft and the moldability and handleability may be deteriorated. When the viscosity exceeds 100,000 cps, it is difficult to handle the plasticizer itself. And the compatibility with the polymer may deteriorate.
また、上記可塑剤のＳＰ値とポリマーを構成するモノマー成分のＳＰ値との差の絶対値［｜（可塑剤のＳＰ値）−（ポリマーを構成するモノマー成分のＳＰ値）｜］は０．９以下とされ、好ましくは０．５以下である。上記ＳＰ値の差の絶対値が大きすぎると、相溶性が悪くなりすぎて十分な透明性が得られなくなることがある。ここでＳＰ値とは溶解度パラメーターを意味する。 The absolute value of the difference between the SP value of the plasticizer and the SP value of the monomer component constituting the polymer [| (SP value of the plasticizer) − (SP value of the monomer component constituting the polymer) |] is 0. 9 or less, preferably 0.5 or less. If the absolute value of the difference between the SP values is too large, the compatibility may be deteriorated and sufficient transparency may not be obtained. Here, SP value means a solubility parameter.
更に、屋外用途で使用される場合には、上記可塑剤自身の耐候性がより高いものが好適である。 Furthermore, when used in outdoor applications, a plasticizer having higher weather resistance is preferable.
上記可塑剤が塩素化パラフィンであると、長期に安定した制振性能が得られる点で好ましい。 It is preferable that the plasticizer is chlorinated paraffin in that stable vibration damping performance can be obtained over a long period of time.
上記塩素化パラフィンとしては、特に限定されないが、得られる制振材料の透明性と制振性のバランスの点で、塩素化量が２０〜７５重量％のものが好ましく、また、炭素数が１２〜５０のものが好ましい。更に２種以上の塩素化パラフィンを組み合わせて用いてもよい。 The chlorinated paraffin is not particularly limited, but preferably has a chlorination amount of 20 to 75% by weight and has 12 carbon atoms in view of the balance between transparency and vibration damping property of the obtained vibration damping material. ~ 50 are preferred. Further, two or more chlorinated paraffins may be used in combination.
上記可塑剤の含有量としては、特に限定されないが、アクリル系モノマー又はスチレン系モノマーを主たる構成成分とするポリマー１００重量部に対して１５０〜１０００重量部であることが好ましい。含有量が少なすぎると制振性が不十分になることがあり、含有量が多すぎると得られる制振材料の機械的強度が低くなり形状の自己保持が困難になることがある。 Although it does not specifically limit as content of the said plasticizer, It is preferable that it is 150-1000 weight part with respect to 100 weight part of polymers which have an acryl-type monomer or a styrene-type monomer as a main structural component. If the content is too small, the vibration damping property may be insufficient. If the content is too large, the mechanical strength of the obtained vibration damping material may be lowered, and the shape may not be easily retained.
本発明の透明制振材料用樹脂組成物は、本発明の効果を損なわない限り、材料の劣化防止や物性向上などの目的で、他の添加剤が配合されたものであってもよい。他の添加剤としては、例えば、紫外線吸収剤、熱安定剤、酸化防止剤、ラジカル捕捉剤、充填剤、増粘剤などが挙げられる。 As long as the effects of the present invention are not impaired, the resin composition for transparent vibration damping material of the present invention may be blended with other additives for the purpose of preventing deterioration of the material and improving physical properties. Examples of other additives include an ultraviolet absorber, a heat stabilizer, an antioxidant, a radical scavenger, a filler, and a thickener.
本発明の制振材料は上記透明制振材料用樹脂組成物を用いてなるものであり、例えば押出成形法、プレス成型法、ロール成型法、射出成型法などを用いて、シート状、テープ状、フィルム状、若しくはその他の適宜の形状に成型されて用いられる。これらの制振材料は単層のみならず複層構成、若しくは本発明の効果を損なわない限り部分的に用いられた構成であってもよい。 The vibration damping material of the present invention is formed using the above-described resin composition for transparent vibration damping material. For example, by using an extrusion molding method, a press molding method, a roll molding method, an injection molding method, etc., a sheet shape, a tape shape It is used after being molded into a film or other appropriate shape. These damping materials may be not only a single layer but also a multilayer structure, or a structure partially used as long as the effects of the present invention are not impaired.
本発明の透明制振材料用樹脂組成物は、アクリル系モノマー又はスチレン系モノマーを主たる構成成分とするポリマーと、２０℃における粘度が８００〜１００，０００ｃｐｓである可塑剤とからなり、上記可塑剤のＳＰ値とポリマーを構成するモノマー成分のＳＰ値との差の絶対値が０．９以下であることを特徴とするので、上記ポリマーと可塑剤の取り扱い性や相溶性に優れ、ポリマーの透明性を損なうことなく、高い制振性を発現する振動減衰材料を得ることが可能となり、透明性を必要とする用途に好適な透明制振材料用樹脂組成物を提供することができる。 The resin composition for a transparent vibration damping material of the present invention comprises a polymer mainly composed of an acrylic monomer or a styrene monomer, and a plasticizer having a viscosity at 20 ° C. of 800 to 100,000 cps. Since the absolute value of the difference between the SP value of the monomer and the SP value of the monomer component constituting the polymer is 0.9 or less, the polymer and the plasticizer are excellent in handleability and compatibility, and the polymer is transparent. Thus, it is possible to obtain a vibration damping material that exhibits high vibration damping properties without impairing the properties, and it is possible to provide a resin composition for transparent vibration damping materials that is suitable for applications that require transparency.
このため、上記透明制振材料用樹脂組成物を用いてなる制振材は、各種構造物や車両、更には家庭電気機器、ＯＡ機器などにおいて発生する振動や騒音を低減するために、特に透明性が要求される部材（例えば、窓ガラス、透明防音壁など）に好適に使用することができる。 For this reason, the vibration damping material using the resin composition for transparent vibration damping material is particularly transparent in order to reduce vibration and noise generated in various structures and vehicles, as well as household electrical equipment and OA equipment. It can be suitably used for members that require high performance (for example, window glass, transparent soundproof walls, etc.).
上記可塑剤が塩素化パラフィンである場合には、長期的に安定した制振性能が得られやすくなり、上記効果は更に確実なものとなる。 When the plasticizer is chlorinated paraffin, stable vibration damping performance can be easily obtained in the long term, and the above effect can be further ensured.
本発明の制振材料は、上記透明制振材料用樹脂組成物を用いてなることを特徴とするので、上記同様の効果を発揮し得るものとなる。 Since the vibration damping material of the present invention is characterized by using the above resin composition for transparent vibration damping material, the same effect as described above can be exhibited.
以下に実施例および比較例を示すことにより、本発明を具体的に説明する。
尚、本発明は下記実施例のみに限定されるものではない。
（実施例１）
アクリル系ホモポリマーとしてポリメタクリル酸メチルエステル（三菱レイヨン社製、商品名「ダイヤーナルＢＲ−８８」、メタクリル酸メチルのＳＰ値＝９．５、Ｍｗ＝４８０，０００）１００重量部と、可塑剤として塩素化パラフィン（旭電化工業社製、商品名「アデカサイザーＥ−５００」、粘度１，０００ｃｐｓ、ＳＰ値＝９．３）２００重量部とを６インチロール（入江鉄工所社製）にて混練を行い、透明制振材料用樹脂組成物を得た。
The present invention will be specifically described below by showing examples and comparative examples.
In addition, this invention is not limited only to the following Example.
Example 1
As an acrylic homopolymer, polymethacrylic acid methyl ester (manufactured by Mitsubishi Rayon Co., Ltd., trade name “Dynar BR-88”, methyl methacrylate SP value = 9.5, Mw = 480,000) and 100 parts by weight as a plasticizer 200 parts by weight of chlorinated paraffin (manufactured by Asahi Denka Kogyo Co., Ltd., trade name “Adeka Sizer E-500”, viscosity 1,000 cps, SP value = 9.3) is kneaded with a 6 inch roll (manufactured by Irie Iron Works). The resin composition for transparent vibration damping materials was obtained.
（実施例２）
アクリル系ホモポリマーとしてポリメタクリル酸メチルエステル（三菱レイヨン社製、商品名「ダイヤーナルＢＲ−８８」、メタクリル酸メチルのＳＰ値＝９．５、Ｍｗ＝４８０，０００）１００重量部と、可塑剤として塩素化パラフィン（味の素ファインテクノ社製、商品名「エンパラ５０」、粘度３０，０００ｃｐｓ、ＳＰ値＝９．４）８００重量部と、安定剤として錫系熱安定剤（三共有機合成社製、商品名「ＳＴＡＮＮ、ＲＣ−６８０Ｂ」）２７重量部とを加圧ニーダー（モリヤマ社製、「ＤＳ０．５−３ＧＨＢ−Ｅ」）にて混練を行い、透明制振材料用樹脂組成物を得た。
(Example 2)
As an acrylic homopolymer, polymethacrylic acid methyl ester (manufactured by Mitsubishi Rayon Co., Ltd., trade name “Dynar BR-88”, methyl methacrylate SP value = 9.5, Mw = 480,000) and 100 parts by weight as a plasticizer 800 parts by weight of chlorinated paraffin (manufactured by Ajinomoto Fine-Techno Co., Ltd., trade name “Empara 50”, viscosity 30,000 cps, SP value = 9.4), and a tin-based heat stabilizer (manufactured by Sansha Co., Ltd.) 27 parts by weight of a product name “STANN, RC-680B”) was kneaded with a pressure kneader (“DS0.5-3GHB-E” manufactured by Moriyama Co., Ltd.) to obtain a resin composition for a transparent vibration damping material. .
（実施例３）
アクリル系コポリマーとしてメタクリル酸メチルエステル−アクリル酸ブチルコポリマー（鐘淵化学工業社製 商品名「ＰＡ６０」、Ｍｗ＝７，５００，０００、メタクリル酸メチルのＳＰ値＝９．５、アクリル酸ブチルのＳＰ値＝９．４）１００重量部と、可塑剤として塩素化パラフィン（味の素ファインテクノ社製、商品名「エンパラ５０」、粘度３０，０００ｃｐｓ、ＳＰ値＝９．４）８００重量部と、安定剤として錫系熱安定剤（三共有機合成社製、商品名「ＳＴＡＮＮ、ＲＣ−６８０Ｂ」）２７重量部とを加圧ニーダー（モリヤマ社製、「ＤＳ０．５−３ＧＨＢ−Ｅ」）にて混練を行い、透明制振材料用樹脂組成物を得た。
(Example 3)
Methacrylic acid methyl ester-butyl acrylate copolymer (trade name “PA60”, Mw = 7,500,000, SP of methyl methacrylate = 9.5, SP of butyl acrylate) Value = 9.4) 100 parts by weight and 800 parts by weight of a chlorinated paraffin (manufactured by Ajinomoto Fine Techno Co., trade name “Empara 50”, viscosity 30,000 cps, SP value = 9.4) as a plasticizer and a stabilizer And 27 parts by weight of a tin-based heat stabilizer (trade name “STANN, RC-680B” manufactured by Sansha Kogyo Co., Ltd.) and kneaded with a pressure kneader (“DS0.5-3GHB-E” manufactured by Moriyama Co., Ltd.) The resin composition for transparent vibration damping materials was obtained.
（実施例４）
スチレン系ホモポリマーとしてポリスチレン（ＰＳジャパン社製 商品名「ＨＦ−７７」、Ｍｗ＝２２０，０００、スチレンのＳＰ値＝９．１）１００重量部と、可塑剤として塩素化パラフィン（旭電化工業社製、商品名「アデカナイザーＥ−５００」、粘度１，０００ｃｐｓ、ＳＰ値＝９．３）２００重量部とを６インチロール（入江鉄工所社製）にて混練を行い、透明制振材料用樹脂組成物を得た。
Example 4
100 parts by weight of polystyrene as a styrene homopolymer (trade name “HF-77” manufactured by PS Japan, Mw = 220,000, SP value of styrene = 9.1) and chlorinated paraffin (Asahi Denka Kogyo Co., Ltd.) as a plasticizer Manufactured by trade name “Adekanizer E-500”, viscosity 1,000 cps, SP value = 9.3) 200 parts by weight are kneaded with a 6 inch roll (Irie Iron Works Co., Ltd.), and resin for transparent vibration damping material A composition was obtained.
（実施例５）
アクリルスチレン系コポリマーとしてメタクリル酸メチル−スチレンコポリマー（日本エイアンドエル社製 商品名「アトレーテＭＭ−６０」、メタクリル酸メチルのＳＰ値＝９．５、スチレンのＳＰ値＝９．１）１００重量部と、可塑剤として塩素化パラフィン（旭電化工業社製、商品名「アデカナイザーＥ−５００」、粘度１，０００ｃｐｓ、ＳＰ値＝９．３）２００重量部とを６インチロール（入江鉄工所社製）にて混練を行い、透明制振材料用樹脂組成物を得た。
(Example 5)
100 parts by weight of an acrylic styrene copolymer, methyl methacrylate-styrene copolymer (trade name “Atrete MM-60” manufactured by Nippon A & L Co., Ltd., methyl methacrylate SP value = 9.5, styrene SP value = 9.1), Chlorinated paraffin (made by Asahi Denka Kogyo Co., Ltd., trade name “Adekanizer E-500”, viscosity 1,000 cps, SP value = 9.3) 200 parts by weight as a plasticizer on a 6 inch roll (made by Irie Iron Works) And kneading to obtain a resin composition for transparent vibration damping material.
（比較例１）
ポリマーとして塩素化ポリエチレン（昭和電工社製 商品名「エラスレン４０２ＮＡ」）１００重量部と、可塑剤として塩素化パラフィン（旭電化工業社製 商品名「アデカサイザーＥ−５００」、粘度１，０００ｃｐｓ、ＳＰ値＝９．３）２００重量部とを６インチロール（入江鉄工所社製）にて混練を行い、制振材料用樹脂組成物を得た。
(Comparative Example 1)
100 parts by weight of chlorinated polyethylene (trade name “Elaslene 402NA” manufactured by Showa Denko KK) as a polymer and chlorinated paraffin (trade name “Adeka Sizer E-500” manufactured by Asahi Denka Kogyo Co., Ltd.), viscosity 1,000 cps, SP as a plasticizer Value = 9.3) 200 parts by weight were kneaded with a 6-inch roll (manufactured by Irie Iron Works Co., Ltd.) to obtain a resin composition for damping material.
（比較例２）
ポリマーとして塩素化ポリエチレン（昭和電工社製、商品名「エラスレン４０２ＮＡ」、ＳＰ値＝９．２）１００重量部と、可塑剤として塩素化パラフィン（旭電化工業社製 商品名「アデカサイザーＥ−５００」、粘度１，０００ｃｐｓ、ＳＰ値＝９．３）１００重量部と、透明化剤としてロジンエステル（荒川化学工業社製 商品名「パインクリスタルＫＥ−６５６」）５重量部とを６インチロール（入江鉄工所社製）にて混練を行い、制振材料用樹脂組成物を得た。
(Comparative Example 2)
100 parts by weight of chlorinated polyethylene (trade name “Elaslene 402NA”, SP value = 9.2) manufactured by Showa Denko KK as a polymer, and chlorinated paraffin (trade name “Adekasizer E-500 manufactured by Asahi Denka Kogyo Co., Ltd.) as a plasticizer. ”, Viscosity of 1,000 cps, SP value = 9.3) 100 parts by weight and 5 parts by weight of rosin ester (trade name“ Pine Crystal KE-656 ”manufactured by Arakawa Chemical Industries, Ltd.) as a clarifying agent Kneading was performed at Irie Iron Works Co., Ltd. to obtain a resin composition for vibration damping materials.
（比較例３）
ポリマーとしてスチレン−ブタジエンブロックコポリマー（旭化成社製、商品名「アサフレックス８３０」、スチレンのＳＰ値＝９．１、ブタジエンのＳＰ値＝８．３）１００重量部と、可塑剤として塩素化パラフィン（旭電化工業社製 商品名「アデカサイザーＥ−５００」、粘度１，０００ｃｐｓ、ＳＰ値＝９．３）２００重量部とを６インチロール（入江鉄工所社製）にて混練を行い、制振材料用樹脂組成物を得た。
(Comparative Example 3)
As a polymer, 100 parts by weight of a styrene-butadiene block copolymer (trade name “Asaflex 830” manufactured by Asahi Kasei Co., Ltd., styrene SP value = 9.1, butadiene SP value = 8.3), and chlorinated paraffin (plasticizer) Asahi Denka Kogyo Co., Ltd. product name “Adeka Sizer E-500”, viscosity 1,000 cps, SP value = 9.3) 200 parts by weight are kneaded with a 6 inch roll (Irie Iron Works Co., Ltd.) to control vibration. A resin composition for material was obtained.
得られた制振材料用樹脂組成物を用いて以下の評価を行った。評価結果は表１に示した。
（損失正接）
粘弾性測定器（レオメトリック・サイエンティフィック・エフ・イー社製、「ＲＤＡ−ＩＩ」）を用い、縦弾性係数（Ｅ’、Ｅ”）及び横弾性係数（Ｇ’、Ｇ”）より算出した。測定条件としては測定周波数５０Ｈｚ、測定温度−４０℃〜６０℃で測定し、ｔａｎδピーク値を求めた。尚、実施例２，３では、Ｅ’が小さすぎて安定的な測定値が得られなかったので、（Ｇ”／Ｇ’）のみを記した。
The following evaluation was performed using the obtained resin composition for vibration damping materials. The evaluation results are shown in Table 1.
(Loss tangent)
Calculated from longitudinal elastic modulus (E ', E ") and lateral elastic modulus (G', G") using viscoelasticity measuring instrument (RDA-II, manufactured by Rheometric Scientific F.E.) did. Measurement conditions were a measurement frequency of 50 Hz and a measurement temperature of −40 ° C. to 60 ° C. to obtain a tan δ peak value. In Examples 2 and 3, since E ′ was too small to obtain a stable measurement value, only (G ″ / G ′) was described.
（ヘイズ値及び制振材膜厚）
得られた制振材用樹脂組成物を２枚のガラス（５０ｍｍ×５０ｍｍ 厚み３ｍｍ）に挟み、１４０℃、圧力５ＭＰａの条件で１０分間プレス機（東邦マシナリー社製、「ＴＢＰＭ３０−２」）により圧着を行い、制振材料の評価サンプル（ガラスプレート）を作製した。このサンプルをヘイズメーター（東京電色社製、「ＴＣ−Ｈ３Ｐ」）にて測定し、ヘイズ値を求めた。また、制振材料の膜厚は膜厚計により測定したガラスプレート全体の厚みからガラスの厚みを引いた値を求めた。
(Haze value and damping material film thickness)
The obtained resin composition for vibration damping material was sandwiched between two pieces of glass (50 mm × 50 mm, thickness 3 mm), and was pressed for 10 minutes at 140 ° C. under a pressure of 5 MPa (“TBPM30-2” manufactured by Toho Machinery Co., Ltd.). Crimping was performed to prepare an evaluation sample (glass plate) of the vibration damping material. This sample was measured with a haze meter (“TC-H3P” manufactured by Tokyo Denshoku Co., Ltd.), and the haze value was determined. The film thickness of the damping material was determined by subtracting the thickness of the glass from the thickness of the entire glass plate measured with a film thickness meter.
表１より明らかなように、本発明の実施例においては、優れた損失正接を有するとともに、ヘイズ値が小さく、良好な透明性を発揮し得ることが判明した。
As is clear from Table 1, in the examples of the present invention, it has been found that it has excellent loss tangent, has a small haze value, and can exhibit good transparency.
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