JPH1162043A - Sound insulation sheet composition for building material - Google Patents
Sound insulation sheet composition for building materialInfo
- Publication number
- JPH1162043A JPH1162043A JP22880797A JP22880797A JPH1162043A JP H1162043 A JPH1162043 A JP H1162043A JP 22880797 A JP22880797 A JP 22880797A JP 22880797 A JP22880797 A JP 22880797A JP H1162043 A JPH1162043 A JP H1162043A
- Authority
- JP
- Japan
- Prior art keywords
- sound insulation
- olefin
- sound
- sheet
- composition
- 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】本発明は建材用遮音シート組
成物に関し、詳しくは非晶性ポリα−オレフィン及び高
比重充填材を配合することにより、各種建築構造物の壁
面、床面等に付設して、遮音性及び吸音性に優れると共
に耐久性と安全性の高い建材用遮音シート組成物に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sound insulating sheet composition for a building material, and more particularly, to a sound insulating sheet composition for a building material, which is mixed with an amorphous poly-α-olefin and a high specific gravity filler to be attached to a wall surface, a floor surface, etc. of various building structures. In addition, the present invention relates to a sound insulating sheet composition for building materials having excellent sound insulating properties and sound absorbing properties and having high durability and safety.
【０００２】[0002]
【従来の技術】近年、一般住宅やビル等の建築構造物に
おける各種設備の質や居住空間の快適さの向上が求めら
れている。特に、多数人が同時に居住するオフィスビル
や集合住宅においては、種々の居住環境が問題にされて
いる。なかでも、他所への、又は、他所からの振動や騒
音の影響は従来から大きな問題となっている。このた
め、周辺外部、隣接空間、上下空間から透過してくる振
動や音を遮蔽、低減させる広範囲の周波数領域をカバー
する吸音材や制振材が実用化され、種々の遮音材が単独
又は併用されている。一般的には、建築構造物の外壁や
内部壁、居住空間の内壁面、床面、天井部に、遮音シー
ト単体、又は、不織布、発泡体、カーペット等の吸音材
や制振材と遮音シートとの積層体を付設して遮音を図る
方式が採用されており、遮音建材として遮音シートが多
用されている。2. Description of the Related Art In recent years, it has been required to improve the quality of various facilities and the comfort of living spaces in building structures such as ordinary houses and buildings. In particular, in an office building or an apartment house where a large number of people live at the same time, various living environments are problematic. In particular, the influence of vibration or noise on or from other places has been a major problem. For this reason, sound absorbing materials and vibration damping materials that cover a wide frequency range that shield and reduce vibrations and sounds transmitted from the surrounding outside, adjacent spaces, and upper and lower spaces are put into practical use, and various sound insulating materials are used alone or in combination. Have been. Generally, on the outer and inner walls of a building structure, on the inner wall, floor, and ceiling of a living space, a single sound insulating sheet, or a sound absorbing or damping material such as nonwoven fabric, foam, or carpet, and a sound insulating sheet A sound insulation sheet is frequently used as a sound insulation building material.
【０００３】遮音材の機能は音波を伝搬経路中で遮断す
ることにあり、透過損失の大きいものが好ましい。透過
損失は、材料の面密度（単位面積当たりの重量）が大き
く支配しており、面密度が大きいほど遮音性に優れる。
また、高周波数領域で起きる共振現象で生じる振動音の
低減は、材料の剛性が関与し弾性率が低く柔軟性に富む
ものが好ましい。従来の建材用遮音シートとしては、上
記遮音性によい面密度及び柔軟性に優れ、且つ耐久性も
高いことから、軟質塩化ビニル樹脂（ＰＶＣ）に炭酸カ
ルシウム、硫酸バリウム、酸化鉄等の無機充填材を配合
した混合組成物をカレンダー成形や押出成形等でシート
状に成形したものが、用いられる建材用遮音シートの大
半を占めている。[0003] The function of the sound insulating material is to block sound waves in the propagation path, and a material having a large transmission loss is preferable. The transmission loss is largely governed by the areal density (weight per unit area) of the material, and the greater the areal density, the better the sound insulation.
In addition, the reduction of the vibration sound generated by the resonance phenomenon occurring in the high frequency region is preferably a material having a low elastic modulus and a high flexibility due to the rigidity of the material. As a conventional sound insulating sheet for building materials, since the surface density and the flexibility excellent in the above sound insulating properties are excellent and the durability is high, an inorganic filler such as calcium carbonate, barium sulfate, iron oxide or the like is added to a soft vinyl chloride resin (PVC). The mixture formed by mixing the materials into a sheet by calendering or extrusion molding occupies most of the sound insulating sheets for building materials used.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、ＰＶＣ
系遮音シートは、建築構造物の火災時、改装や改築時の
廃棄焼却の際に、有害で腐食性の塩化水素ガスを大量に
発生することから、火災発生時の居住者の安全確保、焼
却による周辺環境への影響、また、焼却炉の腐食や劣化
等が問題とされている。また、ＰＶＣ系遮音シートに配
合されている炭酸カルシウム等の無機充填材は、いずれ
も比重が４ｇ／ｃｍ3 以下で、遮音性を高めるためには
遮音シートの厚さを増加する必要があり、付設時に制限
を受けたり、経済性の観点からも好ましくない。このよ
うな従来の建材用遮音シートの問題点から、より安全性
が高く、また、遮音性にも優れる他の遮音シート建材の
開発が要望されている。更に、各種樹脂のリサイクル利
用が進められているが、ＰＶＣは異種樹脂との相溶性に
乏しくリサイクル利用が困難である点からも、他の優れ
た建材用遮音シーが求められている。SUMMARY OF THE INVENTION However, PVC
Since sound-insulating sheets generate a large amount of harmful and corrosive hydrogen chloride gas in the event of a fire in a building structure or incineration during renovation or renovation, ensuring safety and incineration of residents in the event of a fire It has been considered that the influence on the surrounding environment due to the above, as well as the corrosion and deterioration of the incinerator, etc. are problems. Further, the inorganic filler such as calcium carbonate blended in the PVC-based sound insulating sheet has a specific gravity of 4 g / cm 3 or less, and it is necessary to increase the thickness of the sound insulating sheet in order to enhance the sound insulating property. It is unfavorable from the viewpoint of economy due to restrictions at the time of installation. Due to such problems of the conventional sound insulating sheets for building materials, development of other sound insulating sheet building materials having higher safety and excellent sound insulating properties has been demanded. Furthermore, various resins are being recycled, but PVC is poor in compatibility with different kinds of resins and is difficult to recycle. Therefore, there is a need for another excellent sound insulating sheet for building materials.
【０００５】本発明は、上記従来の建材用遮音シートの
現況に鑑み、燃焼時に有害なガスを発生することなく居
住者の安全性を確保すると共に、より遮音性及び防振性
の高い建材用遮音シート組成物の提供を目的とする。発
明者は、上記目的達成のため、各種組成材料の配合、配
合組成比率等について種々検討した結果、非晶性ポリα
−オレフィンと高比重充填材とを含有配合した組成物を
シート状に成形することにより安全性を確保し、且つ、
面密度が高く柔軟性を保持して遮音性に優れて耐久性も
向上することを見出し本発明に到った。[0005] In view of the current state of the above conventional sound insulating sheet for building materials, the present invention ensures the safety of occupants without generating harmful gas during combustion, and has a higher sound insulating and vibration damping property. It is intended to provide a sound insulating sheet composition. The inventor has conducted various studies on the blending of various composition materials, the blending composition ratio, and the like in order to achieve the above object.
-Ensuring safety by forming a composition containing an olefin and a high specific gravity filler into a sheet, and
The present inventors have found that the areal density is high, the flexibility is maintained, the sound insulation is excellent, and the durability is improved.
【０００６】[0006]
【課題を解決するための手段】本発明によれば、非晶性
ポリα−オレフィン及び高比重充填材を含有することを
特徴とする建材用遮音シート組成物が提供される。上記
本発明の建材用遮音シートにおいて、前記高比重充填材
が真比重５ｇ／ｃｍ3 以上の粉末であることが好まし
い。また、前記非晶性ポリα−オレフィンを少なくとも
５重量％及び前記高比重充填材を少なくとも７０重量％
含有してなることが好ましい。According to the present invention, there is provided a sound insulating sheet composition for building materials, comprising an amorphous poly-α-olefin and a high specific gravity filler. In the above-mentioned sound insulating sheet for building materials of the present invention, the high specific gravity filler is preferably a powder having a true specific gravity of 5 g / cm 3 or more. Also, at least 5% by weight of the amorphous poly-α-olefin and at least 70% by weight of the high specific gravity filler.
Preferably, it is contained.
【０００７】本発明は上記のように構成され、柔軟性で
加工性のよい非晶性ポリα−オレフィンに金属鉄粉等の
高比重充填材を配合することから、非晶性ポリα−オレ
フィンの燃焼時に有害ガスの発生のなく柔軟で加工性が
よい特性をそのまま維持し、安全性、制振性に優れ、ま
た、面密度が高く遮音性にも優れる建材用遮音シートを
得ることができる。更に、非晶性ポリα−オレフィン
は、他の各種樹脂との相溶性が高くリサイクル利用が可
能となり、省資源、廃棄物低減等の環境保全の観点から
も効果的であり、工業的実用性に優れる。[0007] The present invention comprises the above-mentioned amorphous poly-α-olefin having flexibility and good workability, and a high specific gravity filler such as metallic iron powder is blended with the amorphous poly-α-olefin. It is possible to obtain a sound-insulating sheet for building materials that maintains flexibility and good workability without generating any harmful gas during combustion, and has excellent safety and vibration damping properties, and also has high surface density and excellent sound insulation. . Further, the amorphous poly-α-olefin has high compatibility with other various resins and can be recycled, which is effective from the viewpoint of environmental conservation such as resource saving and reduction of waste, and is industrially practical. Excellent.
【０００８】[0008]
【発明の実施の形態】以下、本発明について詳細に説明
する。本発明の建材用遮音シートは、非晶性ポリα−オ
レフィンを成分と高比重充填材を主成分として含有する
組成物である。この組成物中に非晶性ポリα−オレフィ
ンは少なくとも５重量％、好ましくは５〜３０重量％、
より好ましくは１０〜２５重量％含有される。非晶性ポ
リα−オレフィンの含有量が５重量％未満であると、配
合組成物の混練作業やシート成形性が低下し、また、遮
音シートの柔軟性が低下して遮音性が低減するため好ま
しくない。一方、非晶性ポリα−オレフィンの含有量が
３０重量％を超えると、遮音シートの機械的特性、特に
引張強度及び引裂強度が低下し、建材用として好ましく
ない。また、面密度が低下して遮音性の向上が図れな
い。また、本発明の建材用遮音シート組成物中の高比重
充填材は、少なくとも７０重量％、好ましくは７０〜９
５重量％、より好ましくは７５〜９０重量％含有され
る。組成物中の高比重充填材が７０重量％未満である
と、遮音シートの面密度が低下し優れた遮音性が得られ
ない。一方、高比重充填材が９５重量％を超えると、配
合組成物の溶融粘度が増大して成形加工が困難となる。
また、得られる遮音シートの柔軟性が低下し、制振性が
低下すると共に機械的強度も低下して建材として付設作
業性がが低下するため好ましくない。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail. The sound insulating sheet for building materials of the present invention is a composition containing an amorphous poly-α-olefin as a component and a high specific gravity filler as a main component. At least 5% by weight of amorphous poly-α-olefin in the composition, preferably 5 to 30% by weight,
More preferably, the content is 10 to 25% by weight. When the content of the amorphous poly-α-olefin is less than 5% by weight, the kneading work of the compound composition and the sheet formability are reduced, and the flexibility of the sound insulating sheet is reduced, so that the sound insulating property is reduced. Not preferred. On the other hand, if the content of the amorphous poly-α-olefin exceeds 30% by weight, the mechanical properties of the sound insulating sheet, particularly the tensile strength and the tear strength, decrease, which is not preferable for building materials. Further, the areal density is reduced, and the sound insulation cannot be improved. The high specific gravity filler in the sound insulating sheet composition for building materials of the present invention is at least 70% by weight, preferably 70 to 9%.
The content is 5% by weight, more preferably 75 to 90% by weight. If the high specific gravity filler in the composition is less than 70% by weight, the areal density of the sound insulating sheet is reduced, and excellent sound insulating properties cannot be obtained. On the other hand, if the high specific gravity filler exceeds 95% by weight, the melt viscosity of the compounded composition increases, and molding processing becomes difficult.
Further, the flexibility of the obtained sound insulating sheet is reduced, the vibration damping property is reduced, and the mechanical strength is also reduced, so that the workability of attaching as a building material is not preferable.
【０００９】本発明で用いられる非晶性ポリα−オレフ
ィンは、所定の触媒を用いて、プロピレン単独でアタク
チック重合させた、または、プロピレンとエチレン及び
／またはブテン−１とをプロピレン含量が５０重量％以
上かつエチレン及び／またはブテン−１含量が５０重量
％未満の組成比で各モノマー単位がランダムに配列する
ように共重合させた、分子量の比較的低い非晶性オレフ
ィン系ポリマーである。例えば、特公平６−８９０７１
号公報等に記載される非晶性オレフィン系ポリマーや製
造方法により得られるものから所定性状のものを適宜選
択して用いることができる。特に、本発明で用いる非晶
性ポリα−オレフィンは、通常のオレフィン系樹脂に比
較して結晶性が非常に低いポリマーで、結晶化度がＤＳ
Ｃ法測定で１０％以下であるものが好ましい。また、数
平均分子量が１，０００〜２０，０００の範囲で、１９
０℃における溶融粘度が３００〜３０，０００ｃｐｓの
比較的低粘度のものが好ましい。The amorphous poly-α-olefin used in the present invention is prepared by atactic polymerization of propylene alone using a predetermined catalyst, or propylene and ethylene and / or butene-1 having a propylene content of 50% by weight. %. An amorphous olefin polymer having a relatively low molecular weight, which is copolymerized so that each monomer unit is randomly arranged at a composition ratio of not less than 50% by weight and an ethylene and / or butene-1 content of less than 50% by weight. For example, Japanese Patent Publication No. 6-89071
And the like and those having predetermined properties can be appropriately selected from the amorphous olefin-based polymers described in Japanese Patent Application Publication No. H07-163, and those obtained by the production method. In particular, the amorphous poly-α-olefin used in the present invention is a polymer having extremely low crystallinity as compared with a normal olefin-based resin, and has a crystallinity of DS.
It is preferably 10% or less as measured by the method C. When the number average molecular weight is in the range of 1,000 to 20,000, 19
Those having a relatively low viscosity of 300 to 30,000 cps at 0 ° C. are preferred.
【００１０】本発明の高比重充填材としては、従来のＰ
ＶＣ系建材用遮音シートに用いられている炭酸カルシウ
ム等の通常の無機充填材より真比重が大きいものが用い
られる。好ましくは真比重が５ｇ／ｃｍ3 以上の高比重
の充填材を用いる。例えば、鉄、銅、鉛等の金属粉末、
酸化亜鉛、酸化アンチモン、酸化鉄やジルコニア等の金
属酸化物粉末、炭化チタンや炭化タングステン等の金属
炭化物粉末を用いることができる。高比重充填材とし
て、特に、製鋼スラグから産出される酸化鉄を含有する
鉄粉が好ましい。製鋼スラグ産出の鉄粉は真比重が６．
５ｇ／ｃｍ3 であり、安価に入手可能であり工業的実用
性からも好ましい。本発明の高比重充填材は粉末状で用
いられ、その平均粒径は、通常５〜５００μｍであり、
好ましくは１０〜１００μｍである。平均粒径が５μｍ
未満では組成物の溶融粘度が増大して成形加工性が低下
するため好ましくない。また、５００μｍを超えると組
成物をシート成形した場合に、表面が粗面となり外観不
良となり好ましくない。As the high specific gravity filler of the present invention, a conventional P
A material having a true specific gravity larger than that of a normal inorganic filler such as calcium carbonate used for a sound insulating sheet for VC building materials is used. Preferably, a high specific gravity filler having a true specific gravity of 5 g / cm 3 or more is used. For example, iron, copper, metal powder such as lead,
Metal oxide powders such as zinc oxide, antimony oxide, iron oxide and zirconia, and metal carbide powders such as titanium carbide and tungsten carbide can be used. As the high specific gravity filler, iron powder containing iron oxide produced from steelmaking slag is particularly preferable. Iron powder from steelmaking slag has a true specific gravity of 6.
It is 5 g / cm 3 , which can be obtained at low cost and is preferable from the industrial practicality. The high specific gravity filler of the present invention is used in the form of powder, and the average particle size is usually 5 to 500 μm,
Preferably it is 10 to 100 μm. Average particle size is 5μm
If it is less than 10%, the melt viscosity of the composition increases, and the moldability decreases. On the other hand, if it exceeds 500 μm, when the composition is formed into a sheet, the surface becomes rough and the appearance becomes poor, which is not preferable.
【００１１】本発明の建材用遮音シート組成物には、上
記非晶性ポリα−オレフィン及び高比重充填材の他に、
エチレン系樹脂を添加配合することができる。エチレン
系樹脂としては、エチレン・プロピレン共重合体、エチ
レン・ブテン−１共重合体、エチレン・ヘキセン−１共
重合体、エチレン・オクテン−１共重合体等の二元ラン
ダム共重合体、又は、エチレン、プロピレン及びジエン
化合物を含む三元ランダム共重合体が好ましい。特に、
エチレン含量が５０〜９０重量％、温度１９０℃で、荷
重２．１６ｋｇｆにおけるメルトインデックス（ＭＩ）
が０．１〜１０の範囲にあるものが好ましい。非晶性ポ
リα−オレフィンとの相溶性が優れ、柔軟性、弾力性及
び押出成形性のバラスンがよいためである。上記エチレ
ン系樹脂を本発明の建材用遮音シート組成物中に配合す
る場合、その配合量は、非晶性ポリα−オレフィン１０
０重量部に対し３０〜３００重量部が好ましく、より好
ましくは５０〜２００重量部である。この配合量が３０
重量部未満であると、組成物の機械的強度や絞り加工性
が低下し添加配合の効果が損なわれる。一方、３００重
量部を超えて配合すると組成物の溶融粘度が極端に上昇
し、成形加工性が低下し好ましくない。[0011] In addition to the amorphous poly-α-olefin and the high specific gravity filler, the sound insulating sheet composition for building materials of the present invention comprises
An ethylene resin can be added and blended. As the ethylene-based resin, ethylene-propylene copolymer, ethylene-butene-1 copolymer, ethylene-hexene-1 copolymer, binary random copolymer such as ethylene-octene-1 copolymer, or Ternary random copolymers containing ethylene, propylene and diene compounds are preferred. Especially,
Melt index (MI) at an ethylene content of 50 to 90% by weight, a temperature of 190 ° C. and a load of 2.16 kgf
Is preferably in the range of 0.1 to 10. This is because the compatibility with the amorphous poly-α-olefin is excellent, and the flexibility, elasticity and extrusion moldability are good. When the ethylene-based resin is blended into the sound insulating sheet composition for building materials of the present invention, the blending amount is determined by the amount of the amorphous poly-α-olefin 10
The amount is preferably from 30 to 300 parts by weight, more preferably from 50 to 200 parts by weight, per 0 parts by weight. This compounding amount is 30
If the amount is less than parts by weight, the mechanical strength and drawability of the composition are reduced, and the effect of the addition and blending is impaired. On the other hand, if the amount is more than 300 parts by weight, the melt viscosity of the composition is extremely increased, and the molding processability is undesirably reduced.
【００１２】本発明の建材用遮音シート組成物には、通
常の遮音シート成形で用いる安定剤、粘着防止剤、着色
剤等の成形補助添加剤を配合することができる。安定剤
はカレンダー加工性を改善するものであり、金属セッケ
ン、有機スズ化合物等を使用できる。粘着防止剤は遮音
シート表面のブロッキング性を低下するものであり、シ
リコーンオイル、ステアリン酸、ステアリン酸誘導体等
を使用できる。着色剤は所望に彩色するため任意の着色
顔料や染料を適宜選択して直接又はマスターバッチ方式
で用いることができる。建材用遮音シートは一般に黒色
であり、通常、カーボンブラックがマスターバッチで用
いられる。The sound-insulating sheet composition for building materials of the present invention can contain molding aids such as stabilizers, anti-adhesives, and coloring agents used in normal sound-insulating sheet molding. The stabilizer improves the calendering processability, and a metal soap, an organotin compound or the like can be used. The anti-adhesion agent reduces the blocking property of the surface of the sound insulating sheet, and silicone oil, stearic acid, stearic acid derivatives and the like can be used. The coloring agent can be used directly or in a masterbatch system by appropriately selecting an arbitrary coloring pigment or dye to obtain a desired color. The sound insulating sheet for building materials is generally black, and carbon black is usually used in a masterbatch.
【００１３】本発明の建材用遮音シート組成物は、上記
の非晶性ポリα−オレフィン及び高比重充填材を、要す
れば、前記のエチレン系樹脂や成形補助添加剤を配合し
て、ヘンシェルミキサー、バンバリーミキサー等の混合
機で均一に溶融混合して得ることができる。得られた組
成物は、カレンダーロール法やＴダイ押出法等の通常の
シート成形法で所定のシート状に成形して、建材用の遮
音シートにすることができる。得られた遮音シートは、
更に、使用目的に応じて各種素材の不織布、発泡体、カ
ーペット等に積層した複合体として用いることができ
る。このようにして本発明の建材用遮音シート組成物を
用いて得られた建材用遮音シートは、面密度が高く遮音
性に優れると同時に、優れた柔軟性を有し高い吸音性及
び制振性も兼ね備える。また、建築構造物の所定個所へ
の付設等の作業性が良く、耐久性にも優れる。The sound insulating sheet composition for a building material of the present invention comprises the above-mentioned amorphous poly-α-olefin and a high specific gravity filler, if necessary, the above-mentioned ethylene resin and a molding auxiliary additive. It can be obtained by uniformly melting and mixing with a mixer such as a mixer or a Banbury mixer. The obtained composition can be formed into a predetermined sheet by a normal sheet forming method such as a calender roll method or a T-die extrusion method, to obtain a sound insulating sheet for building materials. The obtained sound insulation sheet is
Further, it can be used as a composite laminated on a nonwoven fabric, foam, carpet or the like of various materials according to the purpose of use. The sound insulating sheet for building materials obtained using the sound insulating sheet composition for building materials of the present invention as described above has a high surface density and excellent sound insulating properties, as well as excellent flexibility and high sound absorbing properties and vibration damping properties. Also have. In addition, workability such as attachment to a predetermined location of a building structure is good, and durability is excellent.
【００１４】[0014]
【実施例】以下、本発明を実施例に基づき更に詳細に説
明する。但し、本発明は下記実施例により制限されるも
のでない。 実施例１〜３及び比較例１〜３ 下記する組成物成分材料をそれぞれ表１の配合比率（重
量％）で、加圧ニーダーを用い１８０℃で１０分間溶融
混練して建材用遮音シート組成物を得た。その後、得ら
れた組成物を１８０℃のホットプレスにより２ｍｍ厚さ
のシート状に成形した。得られたシート成形体につい
て、下記する測定法でＭＩ（１９０℃：ｇ／１０分）、
比重（ｇ／ｃｍ3 ）、引張強度（ｋｇ／ｃｍ2 ）、引張
伸び（％）及び表面硬度（ＪＩＳ Ａ）をそれぞれ測定
した。その結果を表１に示した。更に、得られたシート
成形体を、０．１ｍｍのポリプロピレン製不織布にカレ
ンダーロール法で積層して遮音積層体を得た。この遮音
積層体の遮音性能を、「残響箱−無響箱方式」の遮音箱
にて残響箱を音源側、無響箱を受音側として、両者間に
不織布面を音源側、遮音シート面を受音側になるように
挟み、音圧レベル差を測定し、周波数分析器で「高圧レ
ベル−１／３オクターブ周波数」をアウトプットして２
５０〜２０００Ｈｚの平均音圧レベルを遮音量として評
価した。なお、ＭＩ、比重、引張強度、引張伸び及び表
面硬度の評価において、測定値がそれぞれ好適範囲（Ｍ
Ｉ：５〜２０ｇ／１０分、比重：３〜５ｇ／ｃｍ3 、引
張強度：１０ｋｇ／ｃｍ2 以上、引張伸び：２０％以
上、表面硬度：３０〜８０、遮音量２５ｄＢ以上）にあ
る場合は○、その範囲を外れた場合は×として表示し
た。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in more detail with reference to embodiments. However, the present invention is not limited by the following examples. Examples 1 to 3 and Comparative Examples 1 to 3 The composition components described below were melt-kneaded at 180 ° C. for 10 minutes using a pressure kneader at the mixing ratio (% by weight) in Table 1 for 10 minutes. I got Thereafter, the obtained composition was formed into a sheet having a thickness of 2 mm by hot pressing at 180 ° C. For the obtained sheet molded body, MI (190 ° C .: g / 10 minutes) by the following measurement method,
Specific gravity (g / cm 3 ), tensile strength (kg / cm 2 ), tensile elongation (%), and surface hardness (JIS A) were measured. The results are shown in Table 1. Further, the obtained sheet molded body was laminated on a polypropylene nonwoven fabric of 0.1 mm by a calender roll method to obtain a sound insulation laminate. The sound insulation performance of this sound-insulating laminate is measured by using a reverberation box-anechoic box method with the reverberation box as the sound source side, the anechoic box as the sound receiving side, the nonwoven fabric side between the two, the sound source sheet side, Is placed on the receiving side, and the sound pressure level difference is measured.
The average sound pressure level of 50 to 2000 Hz was evaluated as the sound insulation. In the evaluation of MI, specific gravity, tensile strength, tensile elongation, and surface hardness, the measured values were each within a suitable range (M
I: 5 to 20 g / 10 min, specific gravity: 3 to 5 g / cm 3 , tensile strength: 10 kg / cm 2 or more, tensile elongation: 20% or more, surface hardness: 30 to 80, sound insulation volume 25 dB or more) 、, when it was out of the range, it was indicated as ×.
【００１５】（使用材料） （１）非晶性ポリα−オレフィン：（宇部レキセン
（株）製、商品名「ＵＴ３３８５」）プロピレン−エチ
レン共重合体、溶融粘度（１９０℃）：８５００ｃｐｓ
（以下、ＡＰＡＯと略す） （２）高比重充填材：（国興産業（株）製、商品名「Ｂ
ＵＳ」）鉄粉（以下、単に鉄粉とする） （３）エチレン系樹脂（三井石油化学（株）製、商品名
「ＥＰゴムＰ−０４８０」）エチレン・プロピレン共重
合体、ＭＩ（１９０℃）＝４．０（以下、ＥＰＲと略
す） （４）ポリプロピレン：（グランドポリマー社製、商品
名「Ｂ２２１」）ＭＦＲ（２３０℃）＝１．０（以下、
ＰＰと略す） （５）炭酸カルシウム：（白石カルシウム（株）製、商
品名「ＢＦ３００」）（以下、炭カルと略す）(Materials used) (1) Amorphous poly α-olefin: (UT3385, manufactured by Ube Lexen Co., Ltd.) Propylene-ethylene copolymer, melt viscosity (190 ° C.): 8500 cps
(Hereinafter abbreviated as APAO) (2) High specific gravity filler: (Kokuko Sangyo Co., Ltd., trade name "B
US ") iron powder (hereinafter simply referred to as iron powder) (3) Ethylene resin (trade name" EP rubber P-0480 "manufactured by Mitsui Petrochemical Co., Ltd.) ethylene-propylene copolymer, MI (190 ° C) ) = 4.0 (hereinafter abbreviated as EPR) (4) Polypropylene: (B221, manufactured by Grand Polymer Co., Ltd.) MFR (230 ° C.) = 1.0 (hereinafter, referred to as EPR)
(Abbreviated as PP) (5) Calcium carbonate: (trade name “BF300” manufactured by Shiraishi Calcium Co., Ltd.) (hereinafter abbreviated as charcoal)
【００１６】（測定方法） （１）溶融粘度：ＪＩＳ Ｋ７２００「熱可塑性プラス
チックの流れ試験方法」に基づき、１９０℃でのＭＩ
（ｇ／１０分）を測定した。 （２）引張強度：ＪＩＳ Ｋ７１１３「プラスチックの
引張試験方法」に基づき、室温での強度（ｋｇ／ｃｍ
2 ）を測定した。 （３）引張伸び：ＪＩＳ Ｋ６３０１「加硫ゴムの物理
試験方法」に基づき、室温での引張伸び（％）を測定し
た。 （４）表面硬度：ＪＩＳ Ｋ６３０１「加硫ゴムの物理
試験方法」に基づき、室温での表面硬度（ＪＩＳ Ａ）
を測定した。(Measurement Method) (1) Melt Viscosity: MI at 190 ° C. based on JIS K7200 “Testing Method for Flow of Thermoplastics”
(G / 10 minutes) was measured. (2) Tensile strength: strength at room temperature (kg / cm) based on JIS K7113 “Plastic tensile test method”
2 ) was measured. (3) Tensile elongation: The tensile elongation (%) at room temperature was measured based on JIS K6301 “Physical test method for vulcanized rubber”. (4) Surface hardness: Surface hardness at room temperature (JIS A) based on JIS K6301 “Physical test method for vulcanized rubber”
Was measured.
【００１７】[0017]
【表１】 [Table 1]
【００１８】上記実施例から明らかなように、所定量の
非晶性ポリα−オレフィン及び高比重充填材の鉄粉を溶
融混練してなる組成物、更にエチレン系樹脂を所定量配
合添加した組成物から得られたシート成形体は、ＭＩ、
比重、引張強度、引張伸び及び表面硬度のいずれもが好
適な数値を示し、遮音量も良好である。一方、非晶性ポ
リα−オレフィンを多い組成物（比較例１）は、ＭＩが
極端に大きくなりシート成形の加工性が悪く、面密度及
び引張強度が共に低く遮音性が低いことが分かった。ま
た、エチレン系樹脂が多く添加された組成物（比較例
２）は逆にＭＩが極端に小さくシート成形が困難であ
り、エチレン系樹脂以外のポリオレフィン樹脂のポリプ
ロピレンを添加した組成物（比較例３）はＭＩ、比重、
引張強度は良好であるが、引張伸びが低下し表面硬度も
極端に大きくなり柔軟性が損なわれ遮音性が低下する。
更に、従来のＰＶＣ系樹脂の遮音シートに用いられてい
る低比重の炭酸カルシウムを添加した組成物（比較例
４）は、炭酸カルシウムの最大添加量である８５重量％
添加しても、比重ひいては遮音性には限界があり、逆に
ＭＩ、引張強度及び引張伸びが極端に低下すると共に、
表面硬度が大きくなりすぎ柔軟性に欠けることが分かっ
た。As is apparent from the above examples, a composition obtained by melting and kneading a predetermined amount of an amorphous poly-α-olefin and a high specific gravity filler iron powder, and a composition obtained by mixing and adding a predetermined amount of an ethylene resin. The sheet molding obtained from the product is MI,
All of specific gravity, tensile strength, tensile elongation, and surface hardness show suitable numerical values, and sound insulation is also good. On the other hand, it was found that the composition containing a large amount of amorphous poly-α-olefin (Comparative Example 1) had an extremely large MI, was poor in sheet formability, had low areal density and tensile strength, and had low sound insulation. . On the other hand, the composition to which a large amount of ethylene-based resin was added (Comparative Example 2), on the contrary, had an extremely small MI and was difficult to form a sheet, and the composition to which polypropylene of a polyolefin resin other than ethylene-based resin was added (Comparative Example 3) ) Is MI, specific gravity,
Although the tensile strength is good, the tensile elongation is reduced, the surface hardness is extremely increased, the flexibility is impaired, and the sound insulation is reduced.
Further, the composition (Comparative Example 4) to which a low specific gravity calcium carbonate used in a conventional PVC resin sound insulation sheet was added was 85% by weight, which is the maximum amount of calcium carbonate added.
Even if added, specific gravity and thus sound insulation are limited, and conversely, MI, tensile strength and tensile elongation are extremely reduced,
It was found that the surface hardness was too large and lacked flexibility.
【００１９】[0019]
【発明の効果】本発明の建材用遮音シート組成物は、非
晶性ポリα−オレフィン及び高比重充填材を主成分であ
り、ＭＩ、引張強度、引張伸び及び表面硬度が良好でシ
ート成形性がよく、得られるシート成形体は面密度が高
く、柔軟性に富み、遮音性及び制振性に秀でると共に耐
久性に優れることから、各種建築構造物の遮音シートと
して適用した場合、長期間安定して種々の騒音や振動音
を遮蔽することができ、居住空間の快適性を向上するこ
とができる。また、同時に、火災発生時や廃棄燃焼時に
有害ガスを発生することがなく安全性が高く、環境への
汚染の影響も少ない。更に、リサイクルによる再生利用
が容易であり極めて実用的である。Industrial Applicability The sound insulating sheet composition for building materials of the present invention is mainly composed of an amorphous poly-α-olefin and a high specific gravity filler, and has good MI, tensile strength, tensile elongation and surface hardness, and has good sheet formability. The resulting sheet molding has a high areal density, high flexibility, excellent sound insulation and vibration damping properties, and excellent durability, so it is stable for a long time when applied as a sound insulation sheet for various building structures. As a result, various noises and vibration sounds can be shielded, and the comfort of the living space can be improved. At the same time, no harmful gas is generated at the time of a fire or waste combustion, and the safety is high, and the influence on the environment is small. Further, recycling by recycling is easy and extremely practical.
Claims (3)
填材を含有することを特徴とする建材用遮音シート組成
物。1. A sound insulating sheet composition for a building material, comprising an amorphous poly-α-olefin and a filler having a high specific gravity.
3 以上の粉末である請求項１記載の建材用遮音シート組
成物。2. The high specific gravity filler has a true specific gravity of 5 g / cm.
The sound insulating sheet composition for building materials according to claim 1, which is 3 or more powders.
とも５重量％及び前記高比重充填材を少なくとも７０重
量％含有してなる請求項１または２記載の建材用遮音シ
ート組成物。3. The sound insulating sheet composition for a building material according to claim 1, comprising at least 5% by weight of the amorphous poly-α-olefin and at least 70% by weight of the high specific gravity filler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22880797A JPH1162043A (en) | 1997-08-11 | 1997-08-11 | Sound insulation sheet composition for building material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22880797A JPH1162043A (en) | 1997-08-11 | 1997-08-11 | Sound insulation sheet composition for building material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1162043A true JPH1162043A (en) | 1999-03-05 |
Family
ID=16882171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22880797A Pending JPH1162043A (en) | 1997-08-11 | 1997-08-11 | Sound insulation sheet composition for building material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1162043A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005015558A (en) * | 2003-06-24 | 2005-01-20 | Idemitsu Petrochem Co Ltd | Flexible polypropylene composite material and its molded product |
| JP2007291642A (en) * | 2006-04-21 | 2007-11-08 | Daiken Trade & Ind Co Ltd | Sound-insulating building board and its manufacturing method |
| JP2014135899A (en) * | 2014-04-28 | 2014-07-24 | Mirai Ind Co Ltd | Wiring box |
-
1997
- 1997-08-11 JP JP22880797A patent/JPH1162043A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005015558A (en) * | 2003-06-24 | 2005-01-20 | Idemitsu Petrochem Co Ltd | Flexible polypropylene composite material and its molded product |
| JP2007291642A (en) * | 2006-04-21 | 2007-11-08 | Daiken Trade & Ind Co Ltd | Sound-insulating building board and its manufacturing method |
| JP2014135899A (en) * | 2014-04-28 | 2014-07-24 | Mirai Ind Co Ltd | Wiring box |
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