JP2017049512A - Incombustible sound absorbing sheet and membrane ceiling using the same - Google Patents
Incombustible sound absorbing sheet and membrane ceiling using the same Download PDFInfo
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本発明は建築物の天井用内装材であって、特に膜天井に用いた場合、地震等で落下しにくく、かつ万が一にも落下した場合であっても安全である軽量性を備え、かつ吸音性に優れ、さらには不燃性能に優れるガラス繊維基材不燃吸音シートに関する。 The present invention is an interior material for a ceiling of a building, and particularly when used for a membrane ceiling, it is difficult to fall due to an earthquake or the like, and has a light weight that is safe even if it falls by any chance, and sound absorption The present invention relates to a non-combustible sound-absorbing sheet of glass fiber base material that is excellent in performance and further in non-combustible performance.
建築物の天井用内装材は、従来は板状の石膏ボード等が使用されてきていたが、東日本大震災では、この建築物の天井用内装材の石膏ボードの落下が頻発し、石膏ボードのような重量物の建材では安全性に問題があるとして、その対策が急務となっている。 In the past, plaster boards and other materials were used for ceiling interior materials for buildings. However, in the Great East Japan Earthquake, gypsum boards for interior materials for ceilings of this building frequently fall and look like plaster boards. There is an urgent need to take countermeasures for heavy construction materials because of the safety issues.
一例として、応急避難場所としての役割もある学校の屋内運動場施設では、その施設の屋内天井材に石膏ボード等に代わる安全性の高い素材として、不燃性能が具備されたガラス繊維基材の膜天井が使用されてきているが、軽量、不燃性能には優れるが、吸音性が低いという欠点があった。そこで吸音性能が必要な場合には、建築物の天井用内装材として好ましくは不燃性能に優れる材料が求められるにもかかわらず、やむなく、不燃性能が劣る吸音性の高いポリエステル繊維基材が一部使用されてきている。 As an example, in an indoor playground facility of a school that also serves as an emergency evacuation site, a glass fiber-based membrane ceiling with incombustible performance as a highly safe material to replace gypsum board etc. in the indoor ceiling material of the facility Has been used, but it has excellent light weight and incombustibility, but has a drawback of low sound absorption. Therefore, when sound absorption performance is required, some polyester fiber base materials with high sound absorption properties with inferior incombustibility are inevitable, despite the need for materials with excellent noncombustibility performance as interior materials for ceilings of buildings. Has been used.
特許文献１には、一方にバルキー加工されていないガラス繊維糸、他方にバルキー加工されたガラス繊維糸を用い、バルキー加工されていないガラス繊維糸の織密度Ａとバルキー加工されたガラス繊維糸の織密度Ｂの和（Ａ＋Ｂ）が８０〜９３本／２５ｍｍ、比（Ｂ／Ａ）が、０．６５〜０．９５、ガラスクロスの開口率が、０．０２〜１．０％、織組織が二重織であるガラスクロスが開示されている。 In Patent Document 1, glass fiber yarn not subjected to bulky processing on one side and glass fiber yarn subjected to bulky processing on the other side are used. The sum (A + B) of the woven density B is 80 to 93/25 mm, the ratio (B / A) is 0.65 to 0.95, the opening ratio of the glass cloth is 0.02 to 1.0%, and the woven structure Discloses a glass cloth having a double weave.
しかし、吸音性と光遮蔽性を両立させるために、織組織を二重織に限定し、緯糸としてバルキー加工されたガラス繊維糸を使用した場合には緯二重織、経糸としてバルキー加工されたガラス繊維糸を使用した場合には、経二重織としている。つまりはガラス繊維糸を二層に配置することになり、軽量性が要求される膜天井において重量が重くなるという欠点があった。 However, in order to achieve both sound absorption and light shielding properties, the weaving structure is limited to double weaving, and when we used bulky glass fiber yarn as weft, weft double weaving and wefted as warp When glass fiber yarn is used, warp double weave is used. In other words, the glass fiber yarns are arranged in two layers, and there is a drawback that the weight becomes heavy in the membrane ceiling where lightness is required.
また、バルキー加工されたガラス繊維糸は、確かにバルキー加工されていない汎用的に使われているガラス繊維糸に比べ、嵩高となり吸音性に関して有利になるものの、バルキー加工の工程が加わりコスト高となる点や、ガラス繊維糸をバルキー加工することで、引張強さ、引裂強さ等の機械的物性が低くなってしまう欠点もあった。 In addition, the bulky glass fiber yarn is more bulky and advantageous in terms of sound absorption than the non-bulky glass fiber yarn that is used for general purposes. In addition, there is a defect that mechanical properties such as tensile strength and tear strength are lowered by bulking the glass fiber yarn.
従って、一方の糸をバルキー加工されていないガラス繊維糸、他方の糸をバルキー加工されたガラス繊維糸を使用する緯二重織の場合は、緯糸方向の引張強さや引裂強さが経糸方向に比べ低くなるし、経二重織の場合は経糸方向の引張強さや引裂強さが緯糸方向に比べ低くなり、経糸、緯糸方向での機械的物性に異方性が生じ、膜天井として用いるには不都合が生じる。 Therefore, in the case of a weft double weave that uses a glass fiber yarn that is not bulky for one yarn and a glass fiber yarn that is bulky for the other yarn, the tensile strength and tear strength in the weft direction are in the warp direction. In the case of warp double weave, the tensile strength and tear strength in the warp direction are lower than in the weft direction, and anisotropy occurs in the mechanical properties in the warp and weft directions. Inconvenience arises.
本発明は建築物の天井用内装材であって、特に膜天井に用いた場合、地震等で落下しにくく、かつ万が一にも落下した場合であっても安全である軽量性を備え、かつ吸音性に優れ、さらには不燃性能に優れるガラス繊維基材不燃吸音シートを提供し、このガラス繊維基材不燃吸音シートを用いた膜天井を提供することを課題とする。 The present invention is an interior material for a ceiling of a building, and particularly when used for a membrane ceiling, it is difficult to fall due to an earthquake or the like, and has a light weight that is safe even if it falls by any chance, and sound absorption An object of the present invention is to provide a glass fiber base incombustible sound absorbing sheet having excellent properties and incombustibility, and to provide a membrane ceiling using the glass fiber base incombustible sound absorbing sheet.
上記課題を達成するために、本発明の不燃吸音シートは、JIS A1405-2（2007年）の吸音率試験における、２５０Hz、５００Hz、１０００Hz及び２０００Hzの４音域の垂直入射吸音率の算術平均が０．５以上、且つJIS L1096（2010年）A法（フラジール形法）の通気性が０．０１ｃｍ3／ｃｍ2・ｓ以上、２５ｃｍ3／ｃｍ2・ｓ以下のガラス繊維基材であって、ガラス繊維基材の質量が２５０ｇ／ｍ2以上、且つガラス繊維基材の表面に輻射電気ヒ−タ−を用い５０ｋW／ｍ2の輻射熱を照射する発熱性試験（ASTM-E1354）において、加熱開始後２０分間の総発熱量が８MJ／ｍ2以下であることを特徴とする。 In order to achieve the above object, the incombustible sound absorbing sheet of the present invention has an arithmetic average of 0 for normal incidence sound absorption in four sound ranges of 250 Hz, 500 Hz, 1000 Hz and 2000 Hz in the sound absorption coefficient test of JIS A1405-2 (2007). A glass fiber substrate having a breathability of 0.01 cm 3 / cm 2 · s or more and 25 cm 3 / cm 2 · s or less of JIS L1096 (2010) Method A (Fragile method), In the exothermic test (ASTM-E1354) where the glass fiber substrate mass is 250 g / m 2 or more and the surface of the glass fiber substrate is irradiated with radiant heat of 50 kW / m 2 using a radiant electric heater. The total calorific value after 20 minutes is 8 MJ / m 2 or less.
吸音率は実環境での使用条件に適合させやすいため、JIS A1409（1998年）の残響室法吸音率での測定が好ましいとされているが、測定試料に大面積が必要、測定に手間がかかるという問題がある。かかる問題に対し、測定試料が小さくてすみ、測定も容易である垂直入射吸音率での測定もあるが、建築材料に使用される吸音材が、この垂直入射吸音率の数値がどのレベルが適正であるかは定かではなかった。 Since it is easy to adapt the sound absorption rate to the usage conditions in the actual environment, it is considered preferable to measure with the reverberation chamber method sound absorption rate of JIS A1409 (1998). However, the measurement sample requires a large area and is troublesome. There is a problem that it takes. To deal with this problem, there is a measurement with a normal incidence sound absorption coefficient that requires only a small measurement sample and is easy to measure. It was not certain whether it was.
本発明者はこの問題を鋭意検討した結果、建築材料に使用される吸音材、特に膜天井に関しては、JIS A1405-2（2007年）の垂直入射吸音率試験の２５０Hz、５００Hz、１０００Hz及び２０００Hzの４音域の垂直入射吸音率の算術平均が０．５以上あれば十分であることを見出した。 As a result of diligent examination of this problem, the present inventor, as for sound absorbing materials used for building materials, particularly film ceilings, 250 Hz, 500 Hz, 1000 Hz and 2000 Hz of the normal incident sound absorption coefficient test of JIS A1405-2 (2007). It was found that the arithmetic average of normal incidence sound absorption coefficient in four sound ranges should be 0.5 or more.
さらに検討を進めた結果、上記４音域の垂直入射吸音率の算術平均と、JIS L1096（2010年）A法（フラジール形法）の通気性に強い相関性を見出し、フラジール形法の通気性を０．０１ｃｍ3／ｃｍ2・ｓ以上、２５ｃｍ3／ｃｍ2・ｓ以下に調整すれば、吸音性の優れた膜天井とすることができることも見出した。 As a result of further investigation, we found a strong correlation between the arithmetic average of the normal incidence sound absorption coefficient in the above four sound ranges and the air permeability of JIS L1096 (2010) Method A (Fragile method). It has also been found that a membrane ceiling having excellent sound absorbing properties can be obtained by adjusting to 0.01 cm 3 / cm 2 · s or more and 25 cm 3 / cm 2 · s or less.
しかしながら、ガラス繊維基材をJIS L1096（2010年）A法（フラジール形法）の通気性を０．０１ｃｍ3／ｃｍ2・ｓ以上、２５ｃｍ3／ｃｍ2・ｓ以下に調整しても、ガラス繊維基材の質量が２００g/ m2程度では、吸音性が良くなく、膜天井として使用するには少なくともガラス繊維基材の質量が２５０ g/m2以上必要であることも見出した。ただし、膜天井で使用するためには、軽量であればあるほど好都合なので、質量については９５０g/m2以下が好ましい。 However, even if the glass fiber substrate is adjusted to have a breathability of JIS L1096 (2010) A method (fragile type method) of 0.01 cm 3 / cm 2 · s or more and 25 cm 3 / cm 2 · s or less, glass It has also been found that when the mass of the fiber base material is about 200 g / m 2 , the sound absorption is not good and at least the weight of the glass fiber base material is 250 g / m 2 or more for use as a membrane ceiling. However, the weight is preferably 950 g / m 2 or less because the lighter is more convenient for use on the membrane ceiling.
また膜天井として用いるためには、不燃性能をもつ材料が好ましいので、ガラス繊維基材の表面に輻射電気ヒ−タ−を用い５０ｋW／ｍ2の輻射熱を照射する発熱性試験（ASTM-E1354）において、加熱開始後２０分間の総発熱量が８MJ／ｍ2以下となるように、該ガラス繊維基材の有機物付着量を、前記のフラジール形法での通気性０．０１ｃｍ3／ｃｍ2・ｓ以上、２５ｃｍ3／ｃｍ2・ｓ以下となるように調整することを特徴とする。 In addition, since a material having nonflammability is preferable for use as a membrane ceiling, a heat generation test (ASTM-E1354) in which a radiation electric heater is used to irradiate the surface of the glass fiber substrate with a radiation heat of 50 kW / m 2. , The organic matter adhesion amount of the glass fiber substrate is set to be 0.01 cm 3 / cm 2 · breathability in the above-mentioned fragile method so that the total calorific value for 20 minutes after the start of heating is 8 MJ / m 2 or less. It adjusts so that it may become more than s and 25 cm < 3 > / cm < 2 > * s or less.
本発明によれば、建築物の天井用内装材であって、特に膜天井に用いた場合、地震等で落下しにくく、かつ万が一にも落下した場合であっても安全である軽量性を備え、かつ吸音性に優れ、さらには不燃性能に優れるガラス繊維基材不燃吸音シートを提供されるとともに、当該ガラス繊維基材不燃吸音シートを用いた膜天井及び膜壁などの内装材が提供される。 According to the present invention, it is an interior material for a ceiling of a building, and particularly when used for a membrane ceiling, it is difficult to drop due to an earthquake or the like, and has a lightness that is safe even if it falls by any chance. In addition, a glass fiber base incombustible sound absorbing sheet having excellent sound absorbing properties and incombustible performance is provided, and interior materials such as a membrane ceiling and a film wall using the glass fiber base incombustible sound absorbing sheet are provided. .
本発明を以下の好適例により説明するが、これらに限定されるものではない。本発明の不燃吸音シートにおけるガラス繊維基材は、ガラス繊維糸を使用し、そのフィラメント径は３〜１３μｍでガラスフイラメントは５０〜２０００本集束した無撚糸、または必要に応じて撚りを掛けた弱撚糸や強撚糸、及び合撚糸などを適宜用いる。ガラス繊維糸の組成は特に限定されず、Eガラス、Sガラス、Rガラス、Tガラス、NEガラス、Lガラス等のガラス組成のガラス繊維糸を用いることができる。 The present invention is illustrated by the following preferred examples, but is not limited thereto. The glass fiber base material in the incombustible sound absorbing sheet of the present invention uses glass fiber yarns, the filament diameter is 3 to 13 μm, and the glass filaments are 50 to 2000 bundled untwisted yarns, or weakly twisted as necessary. A twisted yarn, a strong twisted yarn, and a twisted yarn are appropriately used. The composition of the glass fiber yarn is not particularly limited, and a glass fiber yarn having a glass composition such as E glass, S glass, R glass, T glass, NE glass, or L glass can be used.
本発明の不燃吸音シートは、前記ガラス繊維糸を用いた織物、編物などのガラス繊維基材が用いられるが、JIS L1096（2010年）A法（フラジール形法）の通気性を０．０１ｃｍ3／ｃｍ2・ｓ以上２５ｃｍ3／ｃｍ2・ｓ以下に調整するためには、目開きの少ない織物、または目開サイズが微細な織物などによるガラス繊維基材を用いるのが好ましい。ガラス繊維基材は、樹脂被覆されたガラス繊維糸を経糸及び緯糸に用いて製織したもので、経糸と緯糸の交点が熱融着で固定されていることが膜天井としての寸法安定性維持とフレキシブル性維持の両立に好ましい。 The incombustible sound-absorbing sheet of the present invention uses a glass fiber base material such as a woven fabric and a knitted fabric using the glass fiber yarn, and has a breathability of 0.01 cm 3 according to JIS L1096 (2010) A method (fragile type method). In order to adjust to / cm 2 · s or more and 25 cm 3 / cm 2 · s or less, it is preferable to use a glass fiber substrate made of a woven fabric having a small mesh size or a woven fabric having a fine mesh size. The glass fiber base material is woven using resin-coated glass fiber yarns for warps and wefts, and the intersection of warp and wefts is fixed by thermal fusion to maintain dimensional stability as a membrane ceiling. It is preferable for coexistence of maintaining flexibility.
しかし、本発明の不燃吸音シートのJIS L1096（2010年）A法（フラジール形法）の通気性を０．０１ｃｍ3／ｃｍ2・ｓ以上、２５ｃｍ3／ｃｍ2・ｓ以下に調整しても、該ガラス繊維基材の質量が２００ｇ／ｍ2程度では、吸音性が良くなく、少なくともガラス繊維基材の質量を２５０ｇ／ｍ2以上に調整しなければならない。ただし、膜天井で使用するためには軽量であればあるほど好都合なので、質量については９５０ｇ／ｍ2以下とするのが好ましい。 However, even if the air permeability of JIS L1096 (2010) A method (Fragile type method) of the incombustible sound absorbing sheet of the present invention is adjusted to 0.01 cm 3 / cm 2 · s or more and 25 cm 3 / cm 2 · s or less. When the mass of the glass fiber substrate is about 200 g / m 2 , the sound absorption is not good, and at least the mass of the glass fiber substrate must be adjusted to 250 g / m 2 or more. However, since the lighter is more convenient for use on the membrane ceiling, the mass is preferably 950 g / m 2 or less.
本発明の不燃吸音シートを膜天井として用いるためには、不燃性能が求められるので、ガラス繊維基材の表面に輻射電気ヒ−タ−を用い５０ｋW／ｍ2の輻射熱を照射する発熱性試験（ASTM-E1354）において、加熱開始後２０分間の総発熱量が８MJ／ｍ2以下となるように、該ガラス繊維基材の有機物付着量を、前記の通気性２５ｃｍ3×ｃｍ2×ｓ-1以下となるように調整しなければならない。 In order to use the incombustible sound-absorbing sheet of the present invention as a membrane ceiling, non-combustible performance is required. Therefore, an exothermic test in which the surface of the glass fiber substrate is irradiated with radiant heat of 50 kW / m 2 using a radiant electric heater ( ASTM-E1354), the organic matter adhesion amount of the glass fiber base material is set to the air permeability of 25 cm 3 × cm 2 × s −1 so that the total calorific value for 20 minutes after the start of heating is 8 MJ / m 2 or less. Adjustments must be made to:
本発明の不燃吸音シートにおいては、JIS A1405-2（2007年）の垂直入射吸音率の２５０Hz、５００Hz、１０００Hz及び２０００Hzの４音域の垂直入射吸音率の算術平均が０．５以上であることが肝要で、本発明においては、建築物の天井用内装材であって、特に膜天井に用いた場合、地震等で落下しにくく、かつ万が一にも落下した場合であっても安全である軽量性を備え、かつ吸音性に優れ、さらには不燃性能に優れていることが特徴である。 In the incombustible sound-absorbing sheet of the present invention, the arithmetic average of normal incident sound absorption coefficients of 250 Hz, 500 Hz, 1000 Hz and 2000 Hz of the normal incident sound absorption coefficient of JIS A1405-2 (2007) is 0.5 or more. Essentially, in the present invention, it is an interior material for a ceiling of a building, and particularly when used for a membrane ceiling, it is difficult to fall due to an earthquake or the like, and it is safe even if it falls by any chance It is characterized by being excellent in sound absorption and incombustible performance.
ガラス繊維糸に樹脂を被覆する方法としては、押出成型機等により溶融した樹脂をガラス繊維糸に被覆する加熱加圧押出法や、ガラス繊維等に樹脂が分散、または溶解した処理液を浸漬絞液し乾燥させる方法などの公知の方法を用いることができる。被覆されたガラス繊維糸の全質量に対するガラス繊維糸の質量比は１０〜９０質量％、特に２５〜８０質量％が好ましい。 The glass fiber yarn may be coated with a resin by a hot-press extrusion method in which the glass fiber yarn is coated with a resin melted by an extrusion molding machine or the like, or a processing solution in which the resin is dispersed or dissolved in the glass fiber or the like is immersed and squeezed. A known method such as a liquid drying method can be used. The mass ratio of the glass fiber yarn to the total mass of the coated glass fiber yarn is preferably 10 to 90 mass%, particularly preferably 25 to 80 mass%.
ガラス繊維糸に被覆する樹脂としては、軟質塩化ビニル樹脂、フッ素樹脂、シリコーン樹脂、アクリル系樹脂、エチレン酢酸ビニル樹脂、ポリエチレン樹脂、ポリプロピレン樹脂、ポリエステル樹脂、ナイロン樹脂、ポリウレタン樹脂等を用いることができるが、防炎性、難燃性の観点と、製織後の加熱で経糸と緯糸の交点を接着しやすい、軟質塩化ビニル樹脂が特に好ましい。 As the resin coated on the glass fiber yarn, soft vinyl chloride resin, fluorine resin, silicone resin, acrylic resin, ethylene vinyl acetate resin, polyethylene resin, polypropylene resin, polyester resin, nylon resin, polyurethane resin, etc. can be used. However, a soft vinyl chloride resin that can easily bond the intersection of warp and weft by heat after weaving from the viewpoint of flame resistance and flame retardancy is particularly preferable.
上記軟質塩化ビニル樹脂の中には、通常はフタル酸エステル、リン酸エステル等の可塑剤が含まれており、その他ハロゲン系難燃剤、リン系難燃剤、アンチモン系難燃剤、水酸化アルミニウム等の無機系難燃剤や、顔料や、種々の目的で安定化剤、滑剤、充填剤等の種々の添加剤を添加することができる。 The soft vinyl chloride resin usually contains plasticizers such as phthalates and phosphates, and other halogen flame retardants, phosphorus flame retardants, antimony flame retardants, aluminum hydroxide and the like. Various additives such as inorganic flame retardants, pigments, stabilizers, lubricants, fillers and the like can be added for various purposes.
ガラス織物に樹脂加工を施す方法としては、含浸法、塗布法、スプレー法等の方法が用いられ、樹脂は軟質塩化ビニル樹脂、フッ素樹脂、シリコーン樹脂、アクリル系樹脂、エチレン酢酸ビニル樹脂、ポリウレタン樹脂等が用いられ、必要に応じ顔料や種々の添加剤が添加された溶液で加工される。樹脂加工されたガラス織物の全質量に対するガラス織物の質量比は４０〜９９質量％、特に５５〜９８質量％が好ましく、織糸の交点が樹脂で固定することが膜天井としての寸法安定性維持に好ましく、且つ微細な空隙を形成し、JIS L1096（2010年）A法（フラジール形法）の通気性を０．０１ｃｍ3／ｃｍ2・ｓ以上２５ｃｍ3／ｃｍ2・ｓ以下に調整可能な樹脂加工が好ましい。 As a method of applying resin processing to glass fabric, methods such as impregnation method, coating method and spray method are used, and the resin is soft vinyl chloride resin, fluororesin, silicone resin, acrylic resin, ethylene vinyl acetate resin, polyurethane resin. Etc. are used and processed with a solution to which pigments and various additives are added as required. The mass ratio of the glass fabric to the total mass of the resin-processed glass fabric is preferably 40 to 99 mass%, particularly 55 to 98 mass%, and the dimensional stability as the membrane ceiling is maintained by fixing the intersection of the weaving yarn with the resin. It is preferable to form fine voids, and the air permeability of JIS L1096 (2010) A method (fragile type method) can be adjusted to 0.01 cm 3 / cm 2 · s to 25 cm 3 / cm 2 · s. Resin processing is preferred.
以下、本発明の好適な実施例についてさらに詳細に説明するが、本発明はこれらの実施例に限定されるものではない。 EXAMPLES Hereinafter, although the preferable Example of this invention is described in detail, this invention is not limited to these Examples.
［実施例１］
ＰＶＣ樹脂 ６６ｗｔ％、ＤＩＮＰ ２８ｗｔ％、難燃剤 ３ｗｔ％、安定剤 ２ｗｔ％、顔料 １ｗｔ％の軟質塩化ビニル樹脂組成物を加熱加圧押出法でガラス繊維糸ＥＣＧ７５ １／０ ０．７Ｚに被覆した。この被覆されたガラス繊維糸の全質量に対するガラス繊維糸の質量比は４３ｗｔ％であった。このガラス繊維糸ＥＣＧ７５ １／０ ０．７Ｚに軟質塩化ビニル樹脂を被覆した糸状を経糸、緯糸とし、レピア織機を用い、経糸方向の織糸密度４５本／２５ｍｍ、緯糸方向の織糸密度４５本／２５ｍｍとして2/2斜子織の織組織で製織した。製織後のガラス織物をさらにピンテンターで１４０℃のチャンバー室に投入し１分加熱することで、経糸と緯糸の交点が接着されたガラス繊維基材の不燃吸音シートを得た。
[Example 1]
A soft vinyl chloride resin composition of 66 wt% PVC resin, 28 wt% DINP, 3 wt% flame retardant, 2 wt% stabilizer, and 1 wt% pigment was coated on glass fiber yarn ECG75 1/0 0.7Z by a heat and pressure extrusion method. The mass ratio of the glass fiber yarn to the total mass of the coated glass fiber yarn was 43 wt%. This fiberglass yarn ECG75 1/0 0.7Z coated with a soft vinyl chloride resin is used as warp and weft, and using a rapier loom, 45 weft yarn density in the warp direction / 25mm, 45 weft yarn density in the weft direction. / 25 mm and woven with a 2/2 diagonal weave structure. The glass fabric after weaving was further put into a chamber at 140 ° C. with a pin tenter and heated for 1 minute to obtain a non-combustible sound absorbing sheet of glass fiber base material where the intersection of warp and weft was bonded.
［実施例２］
ガラス繊維糸ＥＣＤＥ７５ １／２ ３．８Ｓを経糸、緯糸とし、エアージェット織機を用い、経糸方向の織糸密度２８本／２５ｍｍ、緯糸方向の織糸密度３０本／２５ｍｍとして平織の織組織で製織した。製織後のガラス織物をウレタン系エマルジョンに黒顔料を加えた処理液に含浸絞液し、１４０℃で１分加熱することで、経糸と緯糸の交点が接着されたガラス繊維基材の不燃吸音シートを得た。
[Example 2]
Weaving glass fabric yarn ECDE75 1/2 3.8S as warp and weft, using air jet loom, weaving in plain weave structure with weft density 28 / 25mm in warp direction and 30 / 25mm weft density in weft direction did. A glass fiber base non-combustible sound-absorbing sheet in which the intersection of warp and weft is bonded by impregnating and drawing glass fabric after weaving with a treatment solution of black emulsion added to urethane emulsion and heating at 140 ° C for 1 minute Got.
［比較例１］
緯糸方向の織糸密度を３５本／２５ｍｍとした以外は、実施例１と同様にしてガラス繊維基材シートを得た。
[Comparative Example 1]
A glass fiber base sheet was obtained in the same manner as in Example 1 except that the weft density in the weft direction was 35/25 mm.
［比較例２］
ガラス繊維糸ＥＣＧ７５ １／０ ０．７Ｚを経糸、緯糸とし、経糸方向の織糸密度４４本／２５ｍｍ、緯糸方向の織糸密度３２本／２５ｍｍとした以外は、実施例２と同様にしてガラス繊維基材シートを得た。
[Comparative Example 2]
The glass fiber yarn ECG75 1/0 0.7Z was used in the same manner as in Example 2 except that warp and weft yarns were used, and the weft yarn density was 44 yarns / 25 mm and the weft yarn density was 32 yarns / 25 mm. A fiber base sheet was obtained.
上記、実施例１〜２、及び比較例１〜２で得られたガラス繊維基材シートの結果を表１に示す。尚、質量、厚さ、引張強さ、通気性、垂直入射吸音率、発熱性試験の総発熱量は以下の方法で測定を行った。 Table 1 shows the results of the glass fiber base sheets obtained in Examples 1-2 and Comparative Examples 1-2. The mass, thickness, tensile strength, air permeability, normal incident sound absorption coefficient, and total calorific value of the heat generation test were measured by the following methods.
［質量］
JIS L1096（2010年）に従い、不燃吸音シートの質量を測定した。
［厚さ］
JIS L1096（2010年）に従い、不燃吸音シートの厚さを測定した。
［引張強さ］
JIS L1096（2010年）のA法（ストリップ法）に従い、不燃吸音シートの経糸方向と緯度糸方向の引張強さ厚さを測定した。
[mass]
According to JIS L1096 (2010), the mass of the non-combustible sound absorbing sheet was measured.
[thickness]
According to JIS L1096 (2010), the thickness of the incombustible sound absorbing sheet was measured.
[Tensile strength]
According to A method (strip method) of JIS L1096 (2010), the tensile strength thickness of the non-combustible sound absorbing sheet in the warp direction and the latitudinal direction was measured.
［通気性］
JIS L1096（2010年）のA法（フラジール形法）に従い、不燃吸音シートの通気性を測定した。
［垂直入射吸音率］
JIS A1405-2（2007年）に従い、不燃吸音シートの垂直入射吸音率を測定し、２５０Hzの吸音率、５００Hzの吸音率、１０００Hzの吸音率及び２０００Hzの吸音率の、４音域の垂直入射吸音率の総和を４で除したもので評価した。
［発熱性試験の総発熱量］
不燃吸音シートの表面に、輻射電気ヒ−タ−を用い５０ｋW／ｍ2の輻射熱を照射する発熱性試験（ASTM-E1354：コーンカロリーメーター試験）において、加熱開始後２０分間の総発熱量を測定した。
[Breathability]
According to JIS L1096 (2010) method A (fragile type method), the air permeability of the noncombustible sound absorbing sheet was measured.
[Normal incidence sound absorption coefficient]
In accordance with JIS A1405-2 (2007), the normal incident sound absorption coefficient of a non-combustible sound absorbing sheet is measured, and the normal incident sound absorption coefficient in four sound ranges of 250 Hz sound absorption coefficient, 500 Hz sound absorption coefficient, 1000 Hz sound absorption coefficient, and 2000 Hz sound absorption coefficient. The total was divided by 4 and evaluated.
[Total calorific value of exothermic test]
In a heat generation test (ASTM-E1354: corn calorimeter test) in which the surface of a non-combustible sound absorbing sheet is irradiated with radiant heat of 50 kW / m 2 using a radiant electric heater, the total calorific value for 20 minutes after the start of heating is measured. did.
本発明の不燃吸音シートは、吸音性に優れ、不燃性能にも優れるので、建築物の天井用内装材として、特に膜天井に用いた場合、地震等で落下しにくく、かつ万が一にも落下した場合であっても安全である軽量性を備え、さらには膜壁、カーテン、間仕切りなどの内装材に広く用いることができる。 The incombustible sound-absorbing sheet of the present invention is excellent in sound absorption and incombustible performance, so when used as an interior material for a ceiling of a building, particularly when used for a membrane ceiling, it is difficult to drop due to an earthquake etc. Even if it is a case, it is safe and lightweight, and can be widely used for interior materials such as membrane walls, curtains and partitions.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021030660A (en) * | 2019-08-28 | 2021-03-01 | ユニチカ株式会社 | Sheet and membrane ceiling including the sheet |
| WO2021112007A1 (en) * | 2019-12-04 | 2021-06-10 | ユニチカ株式会社 | Membrane material, and method for manufacturing membrane material |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007070749A (en) * | 2005-09-05 | 2007-03-22 | Nitto Boseki Co Ltd | Woven fabric of resin-coated glass fiber, resin-coated glass fiber bundle and methods for producing them |
| WO2014171188A1 (en) * | 2013-04-17 | 2014-10-23 | 日東紡績株式会社 | Glass cloth for membrane ceiling and membrane ceiling |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007070749A (en) * | 2005-09-05 | 2007-03-22 | Nitto Boseki Co Ltd | Woven fabric of resin-coated glass fiber, resin-coated glass fiber bundle and methods for producing them |
| WO2014171188A1 (en) * | 2013-04-17 | 2014-10-23 | 日東紡績株式会社 | Glass cloth for membrane ceiling and membrane ceiling |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021030660A (en) * | 2019-08-28 | 2021-03-01 | ユニチカ株式会社 | Sheet and membrane ceiling including the sheet |
| JP7355369B2 (en) | 2019-08-28 | 2023-10-03 | ユニチカ株式会社 | Sheet and membrane ceiling containing the sheet |
| WO2021112007A1 (en) * | 2019-12-04 | 2021-06-10 | ユニチカ株式会社 | Membrane material, and method for manufacturing membrane material |
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