JPH07144977A - Sound-absorbing composite compact and its production - Google Patents
Sound-absorbing composite compact and its productionInfo
- Publication number
- JPH07144977A JPH07144977A JP29337493A JP29337493A JPH07144977A JP H07144977 A JPH07144977 A JP H07144977A JP 29337493 A JP29337493 A JP 29337493A JP 29337493 A JP29337493 A JP 29337493A JP H07144977 A JPH07144977 A JP H07144977A
- Authority
- JP
- Japan
- Prior art keywords
- mixture
- layer
- fiber sheet
- sound
- weight
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/24—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B30/00—Compositions for artificial stone, not containing binders
- C04B30/02—Compositions for artificial stone, not containing binders containing fibrous materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00482—Coating or impregnation materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/52—Sound-insulating materials
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Building Environments (AREA)
- Laminated Bodies (AREA)
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、吸音性に富んだ軽量断
熱壁・天井・屋根材等として有用な吸音性複合成形体お
よびその製法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sound-absorbing composite molded article which is useful as a lightweight heat insulating wall / ceiling / roofing material having a high sound absorbing property and a method for producing the same.
【0002】[0002]
【従来技術とその問題点】特開昭60−65777 号にはパー
ライト等の無機質軽量粉粒体、珪酸アルカリバインダ
ー、珪素または珪素合金よりなる硬化剤を混合し成形し
て軽量不燃性成形体を得ることが開示され、また特開昭
62−7681号には黒曜石、蛭石等の粒状無機質発泡体に珪
酸アルカリバインダー、金属珪素粉と燐酸塩からなる硬
化剤を混合し成形して無機質断熱材を得ることが開示さ
れる等、無機質発泡粒に、珪酸アルカリ液、および珪素
や珪素合金を混合し成形して各種成形体を製造すること
は公知である。2. Description of the Related Art In JP-A-60-65777, a lightweight non-combustible molded article is prepared by mixing and molding an inorganic lightweight powder such as pearlite, an alkali silicate binder, and a curing agent made of silicon or a silicon alloy. It is disclosed that
No. 62-7681 discloses that an inorganic heat insulating material is obtained by mixing a granular inorganic foam such as obsidian and vermiculite with a curing agent composed of a silicic acid alkali binder, metallic silicon powder and phosphate to obtain an inorganic heat insulating material. It is known to manufacture various molded bodies by mixing foamed particles with an alkali silicate solution and silicon or a silicon alloy and molding the mixture.
【0003】しかしこれら開示のケースにおいては吸音
材としての機能からみれば、幅広い音の周波数領域にお
いて優れた吸音率を得ることはできない。本発明は前記
問題点を解消し、幅広い周波数領域で吸音性を有し、か
つ断熱性、不燃性を有する吸音性複合成形体およびその
製法を提供するものである。However, in the cases disclosed above, from the viewpoint of the function as a sound absorbing material, it is not possible to obtain an excellent sound absorbing coefficient in a wide frequency range of sound. The present invention solves the above problems, and provides a sound absorbing composite molded article having sound absorbing properties in a wide frequency range, and having heat insulating properties and nonflammability, and a method for producing the same.
【0004】[0004]
【問題点を解決するための手段】本発明は、ガラス質発
泡粒、珪酸アルカリ液、および珪素または珪素合金粉を
主材としてなる硬化層内に、無機質の繊維シート層を内
在一体化し、板状に成形した吸音性複合成形体、前記吸
音性複合成形体における繊維シート層の厚みが、全体厚
みの 4/10〜 7/10であること、上記吸音性複合成形体
を製造する方法であって、成形枠にガラス質発泡粒 100
重量部、珪酸アルカリ液10〜30重量部 (但し固形分40wt
%換算) 、および珪素または珪素合金粉10〜25重量部か
らなる混合物を注入し、次いでその上に成形枠内寸より
稍小サイズの繊維シート層を枠周壁から間隔をおいて敷
設し、更に繊維シート層の表面および端部を覆って前記
混合物同様のガラス質発泡粒、珪酸アルカリ液、および
珪素または珪素合金粉からなる混合物を充填し、そのま
まそれら混合物を常温硬化し繊維シート層を内在一体化
せしめるようにしたこと、からなる。DISCLOSURE OF THE INVENTION According to the present invention, an inorganic fiber sheet layer is internally integrated into a hardened layer composed mainly of glassy foamed particles, an alkali silicate liquid, and silicon or silicon alloy powder to form a plate. A sound-absorbing composite molded article formed into a shape, and the thickness of the fiber sheet layer in the sound-absorbing composite molding is 4/10 to 7/10 of the total thickness. And 100 glassy foam particles in the molding frame.
Parts by weight, 10 to 30 parts by weight of alkali silicate liquid (but solid content 40 wt
%), And a mixture of 10 to 25 parts by weight of silicon or silicon alloy powder, and a fiber sheet layer of a size smaller than the inner size of the molding frame is laid on the mixture at a distance from the peripheral wall of the frame. The surface and end of the fiber sheet layer are covered with a mixture of the same glassy foam particles, alkali silicate liquid, and silicon or silicon alloy powder as in the above mixture, and the mixture is directly cured at room temperature to integrally integrate the fiber sheet layer. It consists of things that I tried to incarnate.
【0005】本発明においては、ガラス質発泡粒とし
て、シラスバルーン、発泡パーライト等の天然ガラス発
泡粒や、ソーダ石灰シリカ系ガラス、アルミノ石灰珪酸
系ガラス、アルミノほう珪酸系ガラス等の人工的なガラ
ス発泡粒を採用できる。好適にはセントラル硝子株式会
社製商品名セラフォームのごときガラス質発泡成形体
の、切断加工、研磨時に排出される屑ガラスを、適宜粒
径に整粒したものを使用するのが望ましい。In the present invention, as glassy expanded particles, natural glass expanded particles such as shirasu balloon and expanded perlite, and artificial glass such as soda lime silica type glass, alumino lime silicate type glass and aluminoborosilicate type glass. Foam particles can be used. It is preferable to use a glassy foamed product such as Cerafoam manufactured by Central Glass Co., Ltd., in which scrap glass discharged during cutting and polishing is sized to a proper particle size.
【0006】ガラス質発泡粒の粒径や気孔率は特定せ
ず、粒径0.2 〜8mm 程度、気孔率20〜90%程度の広範囲
の粒径、気孔率のものが採用できる。The particle size and porosity of the glassy foamed particles are not specified, and a wide range of particle sizes and porosities having a particle size of about 0.2 to 8 mm and a porosity of about 20 to 90% can be adopted.
【0007】珪酸アルカリ液はバインダーとして作用す
るもので、一般的に多用される珪酸ナトリウム水溶液を
用いればよく、そのSiO2/Na2Oモル比は 2〜3 オーダ
ー、水溶液中の珪酸ナトリウム濃度は40wt%前後であ
る。The alkali silicate liquid acts as a binder, and a commonly used sodium silicate aqueous solution may be used. Its SiO 2 / Na 2 O molar ratio is on the order of 2 to 3, and the sodium silicate concentration in the aqueous solution is It is around 40wt%.
【0008】珪酸アルカリ液のガラス質発泡粒に対する
添加割合は、ガラス質発泡粒 100重量部に対し10〜30重
量部とする。10重量部未満ではガラス質発泡粒表面全体
に珪酸アルカリ液が行き渡り難く、それらの接着性を不
充分とする。また30重量部を越えると、バインダー過剰
となってコストを高騰するばかりでなく、成形性や得ら
れた成形体の耐久性、耐熱性等を低下する。The addition ratio of the alkali silicate liquid to the glassy foam particles is 10 to 30 parts by weight based on 100 parts by weight of the glassy foam particles. If the amount is less than 10 parts by weight, it is difficult for the alkali silicate liquid to spread over the entire surface of the glassy foamed particles, resulting in insufficient adhesion. On the other hand, if it exceeds 30 parts by weight, not only the binder becomes excessive, but the cost rises, but also the moldability, the durability of the obtained molded product, the heat resistance, etc. are deteriorated.
【0009】珪素または珪素合金粉のうち、最も一般的
なものとしてフェロシリコン、あるいはフェロシリコン
を製造、精製した際のフェロシリコン含有残渣 (フェロ
シリコンダスト) が採用できる。珪素 (合金) 粉は硬化
剤として作用するもので、前記珪酸アルカリ液における
アルカリ分と、珪素 (合金) 粉におけるシリコンとの反
応により更に珪酸アルカリを生成し硬化するとともに水
素や余分の水分 (水蒸気) を放出し、該放出跡は気孔と
して残留する。なお上記反応は発熱反応であって、常温
下においても 100℃前後に達し、それにより水分も放散
し硬化するものである。Among silicon and silicon alloy powders, ferrosilicon or ferrosilicon-containing residue (ferrosilicon dust) obtained when ferrosilicon is produced and purified can be used as the most general one. Silicon (alloy) powder acts as a curing agent, and the reaction between the alkali content in the alkali silicate liquid and silicon in the silicon (alloy) powder further generates and hardens alkali silicate, and hydrogen and excess water (steam) ) Is released, and the release trace remains as pores. The above reaction is an exothermic reaction, and reaches about 100 ° C. even at room temperature, whereby water is also dissipated and it is cured.
【0010】珪素 (合金) 粉のガラス質発泡粒に対する
添加割合は、前記珪酸アルカリ液の添加量とほぼ比例さ
せて10〜25重量部添加する。10重量部未満では硬化剤と
しての作用を充分果たし得ず、25重量部を越えても過剰
となってその分ロスを生ずる。なお、低比重高気孔率の
成形体を得ようとすればガラス質発泡粒に対し上記珪酸
アルカリ液の添加量と相まって上記範囲の上限に近い量
を、より高比重低気孔率のものを得ようとすれば同様に
珪酸アルカリ液の添加量と相まって上記範囲の下限に近
い量を添加すればよい。The addition ratio of the silicon (alloy) powder to the glassy foam particles is approximately 10 to 25 parts by weight in proportion to the addition amount of the alkali silicate liquid. If the amount is less than 10 parts by weight, the effect as a curing agent cannot be sufficiently achieved, and if the amount exceeds 25 parts by weight, the amount becomes excessive and the loss occurs accordingly. Incidentally, in order to obtain a molded product having a low specific gravity and a high porosity, an amount close to the upper limit of the above range in combination with the addition amount of the alkali silicate liquid to the glassy foamed particles is obtained to obtain a high specific gravity and a low porosity. In this case, similarly, an amount close to the lower limit of the above range may be added together with the addition amount of the alkali silicate liquid.
【0011】前記ガラス質発泡粒、珪酸アルカリ液、珪
素 (合金) 粉の適宜組合せにより、硬化層のかさ比重は
0.3 ないし1.5 程度に調製できる。The bulk specific gravity of the hardened layer can be increased by appropriately combining the glassy foamed particles, the alkali silicate solution, and the silicon (alloy) powder.
It can be adjusted to about 0.3 to 1.5.
【0012】繊維シート層としては、特に限定するもの
ではないが、通常市販される各種の無機質の短繊維糸
(ロックウール、スラグウール、グラスウール等) 、ガ
ラスチョップドストランドあるいはガラス長繊維糸をフ
ェノール樹脂、ポリエステル樹脂、その他の熱硬化性樹
脂バインダーで接着、成形したものが採用できる。The fiber sheet layer is not particularly limited, but various commercially available inorganic short fiber yarns are usually used.
(Rock wool, slag wool, glass wool, etc.), glass chopped strands or long glass fiber threads bonded and molded with a phenol resin, polyester resin, or other thermosetting resin binder can be used.
【0013】それらの繊維シートは、繊維の集積度合い
に応じてかさ比重0.01ないし0.20程度のものが市販され
ているが、繊維が密に集積し、したがって成形時硬化層
の充填等に際してもあまり膨縮せず、比較的堅牢であっ
て、成形し易いかさ比重0.10前後ないし0.20程度のもの
が好適に採用できる。These fiber sheets are commercially available with a bulk specific gravity of 0.01 to 0.20 depending on the degree of accumulation of the fibers, but the fibers are densely accumulated, and therefore, they do not expand so much when filling the hardened layer during molding. A material having a bulk specific gravity of about 0.10 to 0.20, which does not shrink and is relatively tough and easy to mold, can be suitably used.
【0014】吸音性複合成形体を製造するに際しては、
まず側枠および蓋部にガス抜き孔を有する成形枠を準備
し、ガラス質発泡粒と珪素 (合金) 粉を所定割合で混合
したものに、所定量の珪酸アルカリ液を混練した混合物
としたうえで注型し、その上に成形枠より稍小サイズの
繊維シートを枠周壁と離隔して敷設し、さらにその上に
前記同様のガラス質発泡粒、珪酸アルカリ液、および珪
素 (合金) 粉の混合物を充填し、蓋をセットして30分な
いし 1時間放置し、さらに脱型、乾燥することにより、
硬化層内に繊維シート層が内在一体化した吸音性複合成
形体を得ることができる。In producing the sound absorbing composite molded article,
First, a molding frame having gas vent holes in the side frame and the lid is prepared, and a mixture of glassy foam particles and silicon (alloy) powder in a predetermined ratio is kneaded with a predetermined amount of alkali silicate liquid to prepare a mixture. Then, a fiber sheet of a size smaller than the molding frame is laid apart from the peripheral wall of the frame, and the same glassy foamed particles, alkali silicate liquid, and silicon (alloy) powder are placed on it. By filling the mixture, setting the lid and leaving it for 30 minutes to 1 hour, then removing from the mold and drying,
It is possible to obtain a sound absorbing composite molded body in which the fibrous sheet layer is integrally integrated in the cured layer.
【0015】添付図1は成形枠に原料を充填し、硬化さ
せる状態を示したもので、1 が成形枠、2 、2 が枠に設
けたガス抜き孔、4 がはじめに注型した硬化層、4'が後
で充填した硬化層、5 が繊維シート層をあらわしたもの
である。The attached FIG. 1 shows a state in which a molding frame is filled with a raw material and cured, 1 is a molding frame, 2 and 2 are gas vent holes provided in the frame, 4 is a cured layer cast at the beginning, 4'represents a cured layer filled later, and 5 represents a fiber sheet layer.
【0016】前記先に注型した混合物 (硬化層) と、後
で充填した混合物 (硬化層) は、各成分材料割合を同一
とする必要はなく、割合を相互に換え、かさ比重を換え
ることもできる。It is not necessary that the mixture of the above-mentioned casting (cured layer) and the mixture filled afterward (cured layer) have the same ratio of each component material, but the ratios should be mutually changed and the bulk specific gravity should be changed. You can also
【0017】前記繊維シートは可撓性の繊維からなるた
め、硬化層との接着が不充分となるので、繊維シート端
部を含め硬化層で被覆する形態とするものである。成形
体が1m □を越える等大サイズのものを製造する場合
は、大サイズの繊維シートを端部のみで被覆係止すると
剥離を生じ易いという危惧があるが、繊維シートとして
小サイズシート複数枚を相互に間隔をおいて敷設する等
の設計を適宜施せばよい。Since the fibrous sheet is made of flexible fibers, the adhesion to the hardened layer is insufficient, and therefore the end of the fibrous sheet is covered with the hardened layer. When manufacturing a large-sized product such as a molded product exceeding 1 m □, there is a risk that peeling may occur if a large-sized fiber sheet is covered and locked only at the edges, but multiple small-sized sheets may be used as the fiber sheet. It may be designed as appropriate by laying each other at intervals.
【0018】なお、本吸音性複合成形体の厚みは厚い程
吸音性能は高いが、壁その他の躯体に装設するうえでは
10mm程度ないし30〜40mmとするのが適当である。The thicker the sound-absorbing composite molded article, the higher the sound-absorbing performance. However, when it is mounted on a wall or other body,
It is suitable to set it to about 10 mm to 30 to 40 mm.
【0019】概して硬化層は短〜中波長領域の吸音性能
に優れ、繊維シート層は長波長領域の吸音性能に優れ
る。複合成形体における前記繊維シート層の厚みは幅広
い周波数領域に渡り吸音性能を得るうえで、全体厚の 4
/10ないし 7/10の範囲とするものであり、 4/10未満
であると相対的に硬化層の割合が増大して長波長領域の
吸音性能が劣り、 7/10を越えると相対的に硬化層の割
合が減少して短〜中波長領域の吸音性能が劣る。Generally, the cured layer has excellent sound absorbing performance in the short to medium wavelength region, and the fiber sheet layer has excellent sound absorbing performance in the long wavelength region. The thickness of the fibrous sheet layer in the composite molded body is 4% of the total thickness in order to obtain sound absorbing performance over a wide frequency range.
The range is from / 10 to 7/10. When it is less than 4/10, the ratio of the hardened layer is relatively increased and the sound absorption performance in the long wavelength region is inferior. The ratio of the hardened layer is reduced and the sound absorption performance in the short to medium wavelength region is poor.
【0020】以上本発明によれば硬化層内に繊維シート
層を内在したことにより、幅広い周波数領域において高
い吸音性能を有するという作用、効果を呈し、また成形
に際しても硬化層の硬化とともに同時一体的に成形で
き、硬化層とシート層の剥離も抑制できるという利得が
ある。As described above, according to the present invention, since the fibrous sheet layer is internally provided in the hardened layer, the function and effect of having a high sound absorbing performance in a wide frequency range are exhibited, and at the same time when the hardened layer is hardened at the time of molding, it is possible to perform simultaneous integration. It has the advantage that it can be molded into a sheet and that the separation of the cured layer and the sheet layer can be suppressed.
【0021】[0021]
〔実施例1および比較例1、2〕 (供試原料)セントラル硝子株式会社製商品名セラフォー
ムの製造に際するガラス質発泡成形体の加工屑を粒径 6
mm以下、0.2mm 以上に粉砕整粒しガラス質発泡粒とし
た。なおそのかさ比重は1.0 ないし1.7 、気孔率は60な
いし35%程度にわたるが、これらを混合して用いた。別
に粒径が50μm 以下の市販のフェロシリコン粉、および
Na2O.3SiO2からなる三号珪酸ソーダ水溶液を準備した。
なおその珪酸ソーダ固形分濃度は40wt%である。[Example 1 and Comparative Examples 1 and 2] (Materials under test) Central Glass Co., Ltd. trade name Cerafoam processing wastes of vitreous foamed molded product have a particle size of 6
mm or less and 0.2 mm or more were crushed and sized to obtain glassy foam particles. The bulk specific gravity is 1.0 to 1.7, and the porosity is about 60 to 35%. Separately, commercially available ferrosilicon powder with a particle size of 50 μm or less, and
A No. 3 sodium silicate aqueous solution consisting of Na 2 O.3SiO 2 was prepared.
The solid concentration of sodium silicate is 40 wt%.
【0022】無機質の繊維シートとしては、セントラル
グラスウール株式会社で生産したソーダ石灰シリカ系ガ
ラス繊維を、各設定厚みに集綿しフェノール樹脂バイン
ダーで接着したものを用いた。なお繊維シートの厚みは
8mm、10mm、14mmの3種とし、かさ比重はいずれも1.0
である。As the inorganic fiber sheet, soda lime silica glass fiber produced by Central Glass Wool Co., Ltd. was collected in each set thickness and bonded with a phenol resin binder. The thickness of the fiber sheet is
There are 3 types of 8mm, 10mm and 14mm, and the bulk density is 1.0
Is.
【0023】(試料作製) 実施例1;ガラス質発泡粒 100重量部にフェロシリコン
粉20重量部を加え混合し、さらに珪酸ソーダ水溶液を26
重量部添加混練した混合物を、予め準備した枠側部およ
び蓋部にガス抜き孔を有する成形枠に下層側として注型
し、その上に厚み10mmの前記ガラス繊維シートを敷設し
た。(Preparation of Sample) Example 1; 20 parts by weight of ferrosilicon powder was added to 100 parts by weight of glassy foam particles and mixed, and further 26 parts of sodium silicate aqueous solution was added.
The mixture obtained by adding and kneading parts by weight was cast as a lower layer side into a molding frame having gas vent holes in a frame side portion and a lid portion prepared in advance, and the glass fiber sheet having a thickness of 10 mm was laid thereon.
【0024】なお枠のサイズ300mm ×300mm に対し、ガ
ラス繊維シートは260mm ×260mm とし、ガラス繊維シー
トを枠周壁から間隔をおいてほぼ中央に位置するように
配置した。The glass fiber sheet had a size of 260 mm × 260 mm with respect to the frame size of 300 mm × 300 mm, and the glass fiber sheet was arranged so as to be located in the approximate center with a space from the peripheral wall of the frame.
【0025】さらにその上に前記同様のガラス質発泡粒
100重量部、フェロシリコン粉20重量部、珪酸ソーダ水
溶液26重量部からなる混合物を充填した後、蓋をセット
し、そのまま約 1時間放置して硬化させ、さらに脱型し
放置乾燥して図1の符号 3で示す成形体試料を作製し
た。成形体は厚み各 6mm、 5mmの上下の硬化層に、約10
mmの繊維シート層が挟着され、かつ繊維シートの端面部
も硬化層に覆われたかたちを呈するものであり、繊維シ
ート層の厚み比率は全体の約 1/2 であった。Furthermore, a glassy foamed granule similar to the above is further formed thereon.
After filling the mixture consisting of 100 parts by weight, 20 parts by weight of ferrosilicon powder, and 26 parts by weight of aqueous solution of sodium silicate, set the lid, let it stand for about 1 hour to cure, and further remove the mold and let it dry, then leave it in place. A molded body sample indicated by reference numeral 3 was prepared. The molded product has a thickness of 6 mm and a hardened layer of 5 mm each, and approximately 10
The fiber sheet layer of mm was sandwiched, and the end surface of the fiber sheet was covered with the cured layer, and the thickness ratio of the fiber sheet layer was about 1/2 of the whole.
【0026】比較例1;ガラス質発泡粒 100重量部にフ
ェロシリコン粉20重量部を加え混合し、さらに珪酸ソー
ダ水溶液を26重量部添加混練した混合物のみを、予め準
備した枠側部および蓋部にガス抜き孔を有する成形枠に
注型した後蓋をセットし、そのまま約 1時間放置して硬
化させ、さらに脱型し放置乾燥して比較例試料を作製し
た。試料の厚みは実施例1とほぼ同様の22mmであった。COMPARATIVE EXAMPLE 1 20 parts by weight of ferrosilicon powder was added to 100 parts by weight of glassy foamed particles and mixed, and 26 parts by weight of an aqueous solution of sodium silicate was added and kneaded. After casting in a molding frame having a gas vent hole, a lid was set, the mold was left to stand for about 1 hour to cure, and the mold was removed and left to dry to prepare a comparative sample. The thickness of the sample was 22 mm, which was almost the same as in Example 1.
【0027】比較例2;比較対比のために、前記実施例
1に採用した繊維シートと同様の厚み10mmのガラス繊維
シートを用い、これをエポキシ接着剤で二枚重ね合せ厚
み20mmとしたものを準備した。 上記得られた各試料について以下の測定を行った。Comparative Example 2 For comparison, a glass fiber sheet having a thickness of 10 mm similar to the fiber sheet adopted in Example 1 was used, and two glass fiber sheets were laminated with an epoxy adhesive to give a thickness of 20 mm. . The following measurements were performed on each of the obtained samples.
【0028】(測定) かさ比重の測定;各試料 (各層) の切断片を採取し、そ
の体積、重量を測定してかさ比重を算出した。(Measurement) Measurement of bulk specific gravity: Cut pieces of each sample (each layer) were sampled, and their volume and weight were measured to calculate the bulk specific gravity.
【0029】なお、実施例1における硬化層のかさ比重
は0.5 ( 気孔率にして約80%強) であり、繊維シート層
はかさ比重0.1 (気孔率約95%) である。比較例1の成
形体試料は、実施例1の硬化層同様かさ比重0.5 であ
り、比較例2のシート試料は、実施例1の繊維シート同
様かさ比重0.1 である。The bulk specific gravity of the hardened layer in Example 1 is 0.5 (a porosity of about 80% or more), and the fiber sheet layer has a bulk specific gravity of 0.1 (porosity of about 95%). The molded sample of Comparative Example 1 has a bulk specific gravity of 0.5 as in the cured layer of Example 1, and the sheet sample of Comparative Example 2 has a bulk specific gravity of 0.1 as in the fiber sheet of Example 1.
【0030】吸音率の測定;JIS A 1405に規定する方法
に準拠し、所定サイズの試料を装置の試料支持部にセッ
トし、音源部より周波数100Hz から漸次5000Hzまでの音
波を発し、試料の吸音率を測定した。Measurement of sound absorption coefficient: According to the method specified in JIS A 1405, a sample of a predetermined size is set on the sample support part of the device, and a sound wave from a frequency of 100 Hz to 5000 Hz is gradually emitted from the sound source part to absorb the sound of the sample. The rate was measured.
【0031】図2のグラフは周波数125Hz 〜5000Hzにお
ける実施例1、比較例1、比較例2の吸音率をあらわし
たもので、縦軸に吸音率、横軸に周波数を示す。実施例
1は中〜高音域にわたり幅広く高い吸音性能を有するこ
とが判る。他方比較例1、比較例2は吸音率の高い域が
特定範囲に限られる。The graph of FIG. 2 shows the sound absorption coefficients of Example 1, Comparative Example 1 and Comparative Example 2 at frequencies of 125 Hz to 5000 Hz, where the vertical axis represents the sound absorption coefficient and the horizontal axis represents the frequency. It can be seen that Example 1 has a wide and high sound absorbing performance in the middle to high range. On the other hand, in Comparative Examples 1 and 2, the high sound absorption area is limited to a specific range.
【0032】〔実施例2および実施例3〕 (供試原料)原料として前記実施例1、比較例1、2と同
様のものを採用した。[Examples 2 and 3] (Sample material) The same materials as those in Example 1 and Comparative Examples 1 and 2 were adopted as raw materials.
【0033】(試料作製) 実施例2;ガラス質発泡粒 100重量部にフェロシリコン
粉20重量部を加え混合し、さらに珪酸ソーダ液を26重量
部添加混練した混合物を、予め準備した枠側部および蓋
部にガス抜き孔を有する成形枠に下層側として注型し、
その上に実施例1同様にガラス繊維シート (但し厚み14
mm) を敷設し、さらに前記同様のガラス質発泡粒 100重
量部にフェロシリコン粉20重量部を加え混合し、さらに
珪酸ソーダ液を26重量部添加混練した混合物を充填した
後、蓋をセットし、そのまま約 1時間放置して硬化さ
せ、さらに脱型し放置乾燥して成形体試料を作製した。(Preparation of sample) Example 2; 20 parts by weight of ferrosilicon powder was added to 100 parts by weight of glassy foamed particles and mixed, and further 26 parts by weight of sodium silicate solution was added and kneaded to prepare a frame side part prepared in advance. And cast as a lower layer side into a molding frame having a gas vent hole in the lid,
On top of that, a glass fiber sheet (with a thickness of 14
mm) is laid, 20 parts by weight of ferrosilicon powder is added to 100 parts by weight of the same glassy foamed particles as above, and mixed by adding 26 parts by weight of sodium silicate solution.Then, the lid is set. Then, it was left as it was for about 1 hour to be cured, and then it was released from the mold and left to dry to prepare a molded body sample.
【0034】なお成形体厚みは上下の硬化層が夫々 3m
m、繊維シート層が14mmであり、繊維シート層の厚み比
率は全体の 7/10であった。The thickness of the molded body is 3 m in each of the upper and lower cured layers.
m, the fiber sheet layer was 14 mm, and the thickness ratio of the fiber sheet layer was 7/10 of the whole.
【0035】実施例3;ガラス質発泡粒 100重量部にフ
ェロシリコン粉20重量部を加え混合し、さらに珪酸ソー
ダ液を26重量部添加混練した混合物を、予め準備した枠
側部および蓋部にガス抜き孔を有する成形枠に下層側と
して注型し、その上に実施例1同様にガラス繊維シート
(但し厚み 8mm) を敷設し、さらに前記同様のガラス質
発泡粒 100重量部にフェロシリコン粉20重量部を加え混
合し、さらに珪酸ソーダ液を26重量部添加混練した混合
物を充填した後、蓋をセットし、そのまま約 1時間放置
して硬化させ、さらに脱型し放置乾燥して成形体試料を
作製した。Example 3 20 parts by weight of ferrosilicon powder were added to 100 parts by weight of glassy expanded beads and mixed, and further 26 parts by weight of sodium silicate solution were added and kneaded, and the mixture was added to the frame side portion and lid portion prepared in advance. A lower layer side was cast into a molding frame having a gas vent hole, and a glass fiber sheet was formed thereon in the same manner as in Example 1.
(However, a thickness of 8 mm) is laid, 20 parts by weight of ferrosilicon powder is added to 100 parts by weight of the same glassy foamed particles as above and mixed, and further 26 parts by weight of sodium silicate solution is added and kneaded. Was set, left to stand for about 1 hour to cure, then demolded and left to dry to prepare a molded body sample.
【0036】なお成形体厚みは上下の硬化層が夫々 6m
m、繊維シート層が 8mmであり、繊維シート層の全体厚
みに対する厚み割合は 4/10であった。The thickness of the molded body is 6 m for the upper and lower hardened layers, respectively.
m, the fiber sheet layer was 8 mm, and the thickness ratio to the total thickness of the fiber sheet layer was 4/10.
【0037】(測定) かさ比重測定;前記実施例1、比較例1、2同様にかさ
比重を測定した。実施例2、実施例3とも硬化層はかさ
比重0.5 (気孔率で約80%強) 、繊維シート層は0.1
(気孔率約95%) であった。(Measurement) Bulk Specific Gravity: Bulk specific gravity was measured in the same manner as in Example 1 and Comparative Examples 1 and 2. In Examples 2 and 3, the hardened layer has a bulk specific gravity of 0.5 (porosity of about 80% or more), and the fiber sheet layer has 0.1.
(Porosity about 95%).
【0038】吸音率の測定;前記実施例1、比較例1、
2同様に吸音率を測定した。図3のグラフは周波数125H
z 〜5000Hzにおける実施例2、実施例3の吸音率を実施
例1と対比して示したもので、図示より明らかなとお
り、相互に若干の差異はあるが実施例1同様、実施例
2、実施例3とも中〜高音域にわたり幅広く高い吸音性
を有し、効果を奏することが判る。Measurement of Sound Absorption Coefficient; Example 1, Comparative Example 1,
The sound absorption coefficient was measured in the same manner as in 2. The graph in Figure 3 shows a frequency of 125H.
The sound absorption coefficients of Example 2 and Example 3 at z to 5000 Hz are shown in comparison with Example 1, and as is clear from the drawing, there are some differences from each other, but similar to Example 1, Example 2, It can be seen that in Example 3 as well, it has a wide range of high sound absorbing properties in the middle to high range and is effective.
【0039】なお、さらに実施例1の試料について、背
後に30mmのエアースペース (空気層) を設け、吸音率測
定したところ、図3中実施例1' に示すように250Hz か
ら500Hz の低音域においても高い吸音性能を示すことが
判る。Further, the sample of Example 1 was further provided with an air space (air layer) of 30 mm behind and the sound absorption coefficient was measured. As shown in Example 1'in FIG. 3, in the low sound range of 250 Hz to 500 Hz. It can be seen that also shows high sound absorption performance.
【0040】以上の実施例において明らかなように硬化
層内に繊維シート層を内在せしめた構造としたことによ
り、幅広い周波数域での吸音性能が発揮される。また、
全体がシリカ分に富んだ無機質の材料から構成されるた
め、不燃耐熱性を有し、内部気孔を有するため断熱性を
有することはいうまでもない。As is apparent from the above examples, the sound absorbing performance in a wide frequency range is exhibited by adopting the structure in which the fibrous sheet layer is incorporated in the hardened layer. Also,
Needless to say, since the whole is composed of an inorganic material rich in silica, it has incombustible heat resistance, and has internal pores, and thus has heat insulating properties.
【0041】[0041]
【発明の効果】本発明によれば硬化層内に繊維シート層
を内在せしめた構造としたことにより幅広い周波数領域
において高い吸音性能を示し、また、成形体も常温下で
の硬化層の硬化により同時一体的に容易に製造できると
いう効果を奏する。EFFECTS OF THE INVENTION According to the present invention, the structure in which the fibrous sheet layer is incorporated in the hardened layer exhibits high sound absorbing performance in a wide frequency range, and the molded product is hardened by hardening the hardened layer at room temperature. An effect that it can be easily manufactured simultaneously and integrally.
【図1】本発明において、成形枠に原料を充填し、硬化
させる状態を示した側断面図である。FIG. 1 is a side sectional view showing a state where a molding frame is filled with a raw material and cured in the present invention.
【図2】本発明の一実施例、および比較例を対比した吸
音率を示すグラフである。FIG. 2 is a graph showing a sound absorption coefficient in comparison with an example of the present invention and a comparative example.
【図3】別の態様にかかる吸音率を示すグラフである。FIG. 3 is a graph showing a sound absorption coefficient according to another mode.
1 ----成形枠 2. 2----ガス抜き孔 3 ----吸音性複合成形体 4. 4'---硬化層 5 ----繊維シート層 1 ---- Molding frame 2. 2 ---- Gas vent hole 3 ---- Sound absorbing composite molded body 4.4 '--- Hardened layer 5 ---- Fiber sheet layer
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 FI 技術表示箇所 //(C04B 28/26 14:24) ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification number Office reference number FI technical display part // (C04B 28/26 14:24)
Claims (3)
珪素または珪素合金粉を主材としてなる硬化層内に、無
機質の繊維シート層を内在一体化し、板状に成形したこ
とを特徴とする吸音性複合成形体。1. A glass fiber foamed particle, an alkali silicate solution, and a hardened layer containing silicon or silicon alloy powder as a main material, and an inorganic fiber sheet layer is internally integrated and formed into a plate shape. Sound absorbing composite molded body.
7/10であることを特徴とする請求項1記載の吸音性複
合成形体。2. The fiber sheet layer has a thickness of 4/10 to the total thickness.
The sound-absorbing composite molded article according to claim 1, which is 7/10.
を製造する方法であって、成形枠にガラス質発泡粒 100
重量部、珪酸アルカリ液10〜30重量部 (但し固形分40wt
%換算) 、および珪素または珪素合金粉10〜25重量部か
らなる混合物を注入し、次いでその上に成形枠内寸より
稍小サイズの繊維シート層を枠周壁から間隔をおいて敷
設し、更に繊維シート層の表面および端部を覆って前記
混合物同様のガラス質発泡粒、珪酸アルカリ液、および
珪素または珪素合金粉からなる混合物を充填し、そのま
まそれら混合物を常温硬化し繊維シート層を内在一体化
せしめるようにしたことを特徴とする吸音性複合成形体
の製法。3. A method for producing the sound-absorbing composite molded article according to claim 1, wherein the molding frame has glass foam particles 100.
Parts by weight, 10 to 30 parts by weight of alkali silicate liquid (but solid content 40 wt
%), And a mixture of 10 to 25 parts by weight of silicon or silicon alloy powder, and a fiber sheet layer of a size smaller than the inner size of the molding frame is laid on the mixture at a distance from the peripheral wall of the frame. The surface and end of the fiber sheet layer are covered with a mixture of the same glassy foam particles, alkali silicate liquid, and silicon or silicon alloy powder as in the above mixture, and the mixture is directly cured at room temperature to integrally integrate the fiber sheet layer. A method for producing a sound-absorbing composite molded article, which is characterized in that
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JP05293374A JP3105122B2 (en) | 1993-11-24 | 1993-11-24 | Sound-absorbing composite molded article and its production method |
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JP05293374A JP3105122B2 (en) | 1993-11-24 | 1993-11-24 | Sound-absorbing composite molded article and its production method |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11342554A (en) * | 1998-06-02 | 1999-12-14 | Mitsubishi Kagaku Form Plastic Kk | Composite laminate and acoustic panel |
CN103790251A (en) * | 2014-01-28 | 2014-05-14 | 许庆华 | Environment-friendly foaming vermiculite sound-absorption plate |
JP2021502502A (en) * | 2017-11-11 | 2021-01-28 | リアヴェル ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンディートゲゼルシャフトLIAVER GmbH & CO. KG | Sound-absorbing roof structure of the hall with reduced reverberation time |
WO2024142514A1 (en) * | 2022-12-27 | 2024-07-04 | デンカ株式会社 | Fire spread prevention material, laminate, battery pack, and automobile |
-
1993
- 1993-11-24 JP JP05293374A patent/JP3105122B2/en not_active Expired - Fee Related
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11342554A (en) * | 1998-06-02 | 1999-12-14 | Mitsubishi Kagaku Form Plastic Kk | Composite laminate and acoustic panel |
CN103790251A (en) * | 2014-01-28 | 2014-05-14 | 许庆华 | Environment-friendly foaming vermiculite sound-absorption plate |
JP2021502502A (en) * | 2017-11-11 | 2021-01-28 | リアヴェル ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンディートゲゼルシャフトLIAVER GmbH & CO. KG | Sound-absorbing roof structure of the hall with reduced reverberation time |
WO2024142514A1 (en) * | 2022-12-27 | 2024-07-04 | デンカ株式会社 | Fire spread prevention material, laminate, battery pack, and automobile |
Also Published As
Publication number | Publication date |
---|---|
JP3105122B2 (en) | 2000-10-30 |
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