JPH0630820Y2 - Inorganic sound absorber - Google Patents
Inorganic sound absorberInfo
- Publication number
- JPH0630820Y2 JPH0630820Y2 JP3064188U JP3064188U JPH0630820Y2 JP H0630820 Y2 JPH0630820 Y2 JP H0630820Y2 JP 3064188 U JP3064188 U JP 3064188U JP 3064188 U JP3064188 U JP 3064188U JP H0630820 Y2 JPH0630820 Y2 JP H0630820Y2
- Authority
- JP
- Japan
- Prior art keywords
- inorganic
- aggregate
- sound absorber
- sound absorbing
- ash
- 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.)
- Expired - Lifetime
Links
Landscapes
- Building Environments (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
Description
【考案の詳細な説明】 産業上の利用分野 本考案は、吸音材として用いられる無機質吸音体の改良
に関するものである。TECHNICAL FIELD The present invention relates to improvement of an inorganic sound absorbing body used as a sound absorbing material.
従来の技術 従来、無機質吸音体としては第３図で示すように微粒状
の珪砂や花こう岩等の単固粒１，１…を骨材とし、その
骨材を適宜なバインダー２で結合し、空隙３を残存させ
ることによりポーラスな板体として焼結形成したものが
知られている。2. Description of the Related Art Conventionally, as an inorganic sound absorbing body, as shown in FIG. 3, fine solid particles 1,1 ... such as silica sand and granite are used as aggregates, and the aggregates are bonded by an appropriate binder 2. It is known that a porous plate body is sintered and formed by leaving the voids 3 left.
然し、この既存する無機質吸音体では高比重のものであ
るため、重量が重くしかも容易に切断できず、吸音材と
しては取扱いに不便なのが実情である。However, since this existing inorganic sound absorber has a high specific gravity, it is heavy and cannot be easily cut, and it is inconvenient to handle it as a sound absorbing material.
考案が解決しようとする課題 本考案は、比較的低比重で所望の形状に容易に切断可能
な無機質吸音体を提供することを目的とする。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention An object of the present invention is to provide an inorganic sound absorbing body which has a relatively low specific gravity and can be easily cut into a desired shape.
課題を解決するための手段 本考案に係る無機質吸音体においては、石炭灰の微粉か
ら所望径に造粒した灰固粒を骨材とし、その骨材を無機
質バインダーで結合し、内部に連続した空隙を有する所
定厚みのポーラスな板体として焼結成形することにより
構成されている。Means for Solving the Problems In the inorganic sound absorber according to the present invention, ash solid particles granulated to a desired diameter from fine powder of coal ash are used as aggregates, and the aggregates are bonded with an inorganic binder to be continuous inside. It is formed by sintering as a porous plate having a predetermined thickness and having voids.
作用 この無機質吸音体では、骨材として石炭灰の微粉を所望
径に造粒した灰固粒が用いられているため、極めて比重
の軽いものになるばかりでなく、鋸等で容易に切断でき
て所望な形状の板材に簡単に成形することができる。ま
た、灰固粒を骨材とすることから粒度管理が容易で、吸
音体として重要な連続気孔を安定よく形成でき、流れ抵
抗を計測することにより吸音特性の管理も容易に行える
ものに形成することができる。Action In this inorganic sound absorber, since ash solid particles obtained by granulating fine powder of coal ash to a desired diameter are used as an aggregate, not only does it have extremely low specific gravity, but it can be easily cut with a saw or the like. It can be easily formed into a plate material having a desired shape. In addition, since ash solid particles are used as an aggregate, particle size control is easy, and continuous pores, which are important as a sound absorber, can be stably formed, and sound absorption characteristics can be easily controlled by measuring flow resistance. be able to.
実施例 以下、第１，２図を参照して説明すれば、次の通りであ
る。Example The following is a description with reference to FIGS.
この無機質吸音体は、第１図で示すように火力発電所等
からアッシュとして排出される石炭灰の微粉灰を原料と
し、その微粉灰に少量の水を添加して所望径の灰固粒に
造粒し、これを焼成して硬粒化した灰固粒を骨材１０，
１０…とすることにより板体として形成されている。As shown in Fig. 1, this inorganic sound absorber uses fine ash of coal ash discharged as ash from a thermal power plant, etc. as a raw material, and a small amount of water is added to the fine ash to form ash solid particles of a desired diameter. The ash solid particles that have been granulated and then hardened by firing are aggregate 10,
By setting 10 ..., It is formed as a plate.
その骨材１０，１０…は分級しまたは必要に応じて粉砕
分級し、これに珪酸ソーダ系の無機質バインダー１１を
添加して混練した後所定量を型枠に充填し、例えば２０
mm程度の所定厚みを有する板体として成形する。その板
体として成形後は１０００℃程度で焼成焼結すると、珪
酸ソーダ系の無機質バインダー１１が骨材１０，１０…
の周囲に付着して骨材１０，１０…を相互に結合すると
共に、内部に連続した空隙１２，１２…を残存させて硬
化することによりポーラスな所定厚みの無機質吸音体と
して形成できる。The aggregates 10, 10 ... Are classified or crushed and classified if necessary, and a sodium silicate-based inorganic binder 11 is added and kneaded, and then a predetermined amount is filled in a mold, for example, 20
It is formed as a plate having a predetermined thickness of about mm. When the plate body is molded and then fired and sintered at about 1000 ° C., the sodium silicate-based inorganic binder 11 becomes the aggregates 10, 10 ...
Are adhered to the periphery of the aggregate to bond the aggregates 10 to each other, and the voids 12, 12 ... Continuing inside are left to cure, whereby the aggregate can be formed as a porous inorganic sound absorber having a predetermined thickness.
この無機質吸音体では、骨材１０，１０…が石炭灰の固
粒状で無数の独立気泡を内部に保有するため、比重が
１：１程度と低いものになる。また、その骨材１０，１
０…を珪酸ソーダ系の無機質バインダー１１で結合し、
連続した空隙１２，１２…を内部に残存させるから軽く
て持運びや施工が手軽に行い得るものになり、鋸等で所
望形状に形成できることから加工し易いものになる。こ
れに加えて、各骨材１０，１０…が固粒状で隣接間に連
続した空隙１２，１２…を有するから良好な吸音特性を
発揮できる。また、全体が無機質材料で形成されている
ことから不燃性，耐火乃至は耐熱性も保有する。In this inorganic sound absorbing body, since the aggregates 10, 10 ... Have a solid particle of coal ash and innumerable closed cells inside, the specific gravity is as low as about 1: 1. Also, the aggregate 10,1
0 ... is bound with a sodium silicate-based inorganic binder 11,
Since the continuous voids 12, 12 ... Are left inside, they are light and can be easily carried and constructed, and can be formed into a desired shape with a saw or the like, which facilitates processing. In addition to this, since each aggregate 10, 10 ... Has solid particles and has continuous voids 12, 12, ... Between adjacent ones, good sound absorbing characteristics can be exhibited. Further, since it is entirely made of an inorganic material, it has noncombustibility, fire resistance and heat resistance.
因みに、粒度0.3mm〜1.5mm径の骨材を重量比で８０％，
ガラスフリットを重量比で２０％混合し、それに珪酸ソ
ーダ系の無機質バインダーを重量比で２０％加えて混練
し、これを容積２×１０６mm3の型枠に２４００gr重量
充填して２０mm厚みに成形し、１０００℃で２時間焼成
処理することにより厚み２０mmのポーラスな無機質吸音
体を得た。By the way, 80% by weight of aggregate with a grain size of 0.3 mm to 1.5 mm,
20% by weight of glass frit was mixed, and 20% by weight of inorganic binder of sodium silicate was added and kneaded, and 2400 gr weight was filled in a mold with a volume of 2 × 10 6 mm 3 to a thickness of 20 mm. By molding and baking at 1000 ° C. for 2 hours, a porous inorganic sound absorber having a thickness of 20 mm was obtained.
この無機質吸音体は、気孔率４５，嵩み比重1.1，見掛
比重2.1，曲げ強度３５kg/cm2を有し、第２図で示す吸
音特性を発揮するところから吸音材として用いるに極め
て好適なものであった。なお、第２図のグラフ中、白点
曲線は流れ抵抗3.3×１０４NS/m4の吸音特性を示し、黒
点曲線は流れ抵抗5.5×１０４NS/m4の吸音特性を示す。This inorganic sound absorber has a porosity of 45, a bulk specific gravity of 1.1, an apparent specific gravity of 2.1, and a bending strength of 35 kg / cm 2 , and since it exhibits the sound absorbing characteristics shown in FIG. 2, it is very suitable for use as a sound absorbing material. It was a thing. In the graph of FIG. 2, the white dot curve shows the sound absorption characteristic of flow resistance 3.3 × 10 4 N S / m 4 , and the black dot curve shows the sound absorption characteristic of flow resistance 5.5 × 10 4 N S / m 4 .
考案の効果 以上の如く、本考案に係る無機質吸音体に依れば、極め
て軽量で切断可能に形成できると共に、吸音特性の更な
る向上も可能にするものである。Effects of the Invention As described above, according to the inorganic sound absorbing body of the present invention, it is possible to form it with extremely light weight and to be cut, and further improve the sound absorbing characteristics.
第１図は本考案に係る無機質吸音体の拡大部分断面図、
第２図は同吸音体の吸音特性を示すグラフ、第３図は従
来例に係る無機質吸音体の拡大部分断面図である。 １０，１０…：骨材、１１：無機質バインダー、１２，
１２…：連続した空隙。FIG. 1 is an enlarged partial sectional view of an inorganic sound absorber according to the present invention,
FIG. 2 is a graph showing sound absorbing characteristics of the sound absorbing body, and FIG. 3 is an enlarged partial sectional view of an inorganic sound absorbing body according to a conventional example. 10, 10 ...: Aggregate, 11: Inorganic binder, 12,
12: continuous voids.
───────────────────────────────────────────────────── フロントページの続き (72)考案者 坂井 親義 東京都千代田区内幸町１丁目３番６号 日 窒工業株式会社内 (72)考案者 渡辺 政喜 東京都千代田区内幸町１丁目３番６号 日 窒工業株式会社内 (56)参考文献 特開 昭56−69262（ＪＰ，Ａ) 特開 昭57−135762（ＪＰ，Ａ) 特開 昭62−17084（ＪＰ，Ａ) 特開 昭62−21771（ＪＰ，Ａ) ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Chiyoshi Sakai 1-3-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nihon Kogyo Co., Ltd. (72) Masayoshi Watanabe 1-3-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Date Nihon Kogyo Co., Ltd. (56) Reference JP-A-56-69262 (JP, A) JP-A-57-135762 (JP, A) JP-A-62-17084 (JP, A) JP-A-62-21771 ( JP, A)
Claims (1)
を骨材（１０，１０…）とし、その骨材（１０，１０
…）を無機質バインダー（１１）で結合し、内部に連続
した空隙（１２，１２…）を有する所定厚みのポーラス
な板体として焼結成形してなることを特徴とする無機質
吸音体。1. An aggregate (10, 10 ...) Using ash solid particles obtained by granulating a fine powder of coal ash to a desired diameter, and the aggregate (10, 10).
...) are bound by an inorganic binder (11) and sintered and molded into a porous plate body having a predetermined thickness and having continuous voids (12, 12 ...) Inside thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3064188U JPH0630820Y2 (en) | 1988-03-08 | 1988-03-08 | Inorganic sound absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3064188U JPH0630820Y2 (en) | 1988-03-08 | 1988-03-08 | Inorganic sound absorber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01136144U JPH01136144U (en) | 1989-09-18 |
| JPH0630820Y2 true JPH0630820Y2 (en) | 1994-08-17 |
Family
ID=31255880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3064188U Expired - Lifetime JPH0630820Y2 (en) | 1988-03-08 | 1988-03-08 | Inorganic sound absorber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0630820Y2 (en) |
-
1988
- 1988-03-08 JP JP3064188U patent/JPH0630820Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01136144U (en) | 1989-09-18 |
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