JPH0726343Y2 - Carbon fiber reinforced inorganic board - Google Patents
Carbon fiber reinforced inorganic boardInfo
- Publication number
- JPH0726343Y2 JPH0726343Y2 JP1988161484U JP16148488U JPH0726343Y2 JP H0726343 Y2 JPH0726343 Y2 JP H0726343Y2 JP 1988161484 U JP1988161484 U JP 1988161484U JP 16148488 U JP16148488 U JP 16148488U JP H0726343 Y2 JPH0726343 Y2 JP H0726343Y2
- Authority
- JP
- Japan
- Prior art keywords
- carbon fiber
- woven fabric
- yarn
- triaxial
- fiber reinforced
- 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
- Laminated Bodies (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
- Woven Fabrics (AREA)
Description
【考案の詳細な説明】 （産業上の利用分野） この考案は、建材等として有用な炭素繊維補強無機質板
に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a carbon fiber reinforced inorganic plate useful as a building material or the like.
（従来の技術） 炭素繊維とセメント等の無機質材とを複合してなる炭素
繊維補強無機質板は、無機質材のみからなるものにくら
べて比強度、比弾性率が高く、薄く、軽量にできて取り
扱いも容易であることから、ビル等に使用する建材とし
て注目されている。(Prior Art) A carbon fiber reinforced inorganic plate made of a composite of carbon fiber and an inorganic material such as cement has a higher specific strength and a higher specific elastic modulus than those made of only an inorganic material, and can be made thin and lightweight. Since it is easy to handle, it is attracting attention as a building material used in buildings and the like.
そのような無機質材としては、従来、たとえば特開昭56
−129657号公報に記載されているような、セメント等の
無機質材に炭素短繊維を分散させて補強してなるものが
知られている。ところが、この従来の無機質材は、短繊
維を使用しているために大きな補強効果が得られないば
かりか、製造上、補強を必要としない部位にも短繊維を
分散せしめざるを得ないので高価な炭素繊維の使用量が
多くなり、コストが高くなる。As such an inorganic material, conventionally, for example, JP-A-56
It is known that carbon short fibers are dispersed and reinforced in an inorganic material such as cement as described in Japanese Patent Publication No. 129657. However, since this conventional inorganic material does not have a large reinforcing effect because it uses short fibers, it is expensive because it has no choice but to disperse the short fibers even in a portion that does not require reinforcement in manufacturing. The amount of carbon fiber used is large and the cost is high.
一方、特公昭63−55146号公報には、炭素繊維束からな
る織糸が互いに直交する２方向に延びている、織物とし
ては極く普通の２軸織物を使用したものが記載されてい
る。この無機質板は、炭素繊維が連続繊維からなってい
て補強効果が高いために、上述したものよりも比強度や
比弾性率が向上している。しかしながら、一方で、２軸
織物は織糸が互いに直交する２方向にのみ延びているた
めに異方性が大きく、そのため、無機質板は、織糸に対
して45°の方向に応力が作用すると比較的簡単に破壊し
てしまう。On the other hand, Japanese Examined Patent Publication No. 63-55146 describes a biaxially woven fabric in which woven yarns made of carbon fiber bundles extend in two directions orthogonal to each other and which is a very ordinary biaxial woven fabric. In this inorganic plate, since the carbon fibers are continuous fibers and have a high reinforcing effect, the specific strength and the specific elastic modulus are higher than those described above. However, on the other hand, the biaxial woven fabric has a large anisotropy because the weaving yarns extend only in two directions orthogonal to each other, and therefore the inorganic plate is subjected to stress in the direction of 45 ° to the weaving yarns. It's relatively easy to destroy.
かかる問題を解決するために、使用時に応力が作用する
方向をあらかじめ調べておき、無機質板をその２軸織物
の経糸または緯糸が上記45°の方向になるように配置す
ることが考えられる。しかしながら、そうすると、45°
の方向に対して直交する方向の緯糸または経糸が応力に
対してほとんど全く効果をもたなくなるばかりか、その
直交方向の緯糸または経糸に沿ってクラックを生じやす
くなるという問題がでてくる。In order to solve such a problem, it is considered that the direction in which the stress acts at the time of use is previously investigated, and the inorganic plate is arranged so that the warp yarn or the weft yarn of the biaxial woven fabric is oriented in the above 45 ° direction. However, if you do so, 45 °
There is a problem that the weft or warp in the direction orthogonal to the direction has almost no effect on the stress, and cracks easily occur along the weft or warp in the orthogonal direction.
また、製造上は、複数枚の２軸織物をその経糸または緯
糸の方向が少しずつずれるように積層する、いわゆる疑
似等方積層法を採るが、枚数が多くなればなるほぼ重な
りによって目の大きさが小さくなって砂やじゃり等の骨
材が通りにくくなり、骨材の分散が困難になって、曲げ
応力が作用したときに層間剥離を起こしやすくなる。Further, in manufacturing, a so-called pseudo-isotropic laminating method is adopted in which a plurality of biaxial woven fabrics are laminated so that the warp or weft directions thereof are slightly different from each other. As a result, aggregates such as sand and jade become difficult to pass, and it becomes difficult to disperse the aggregates, and delamination easily occurs when bending stress acts.
（考案が解決しようとする課題） この考案の目的は、従来の無機質板の上述した問題点を
解決し、少ない炭素繊維量でも比強度、比弾性率に優れ
るばかりか、層間剥離やクラック等の心配が少なく、し
かも、等方性に優れた炭素繊維補強無機質板を提供する
にある。(Problems to be solved by the invention) The object of the invention is to solve the above-mentioned problems of the conventional inorganic plate, and not only excel in specific strength and specific elastic modulus even with a small amount of carbon fiber, but also to prevent delamination and cracks. An object is to provide a carbon fiber reinforced inorganic plate that is less worrying and excellent in isotropy.
（課題を解決するための手段） 上記目的を達成するために、この考案は、樹脂で固めた
３軸炭素繊維織物と無機質材とを複合してなり、かつ、
上記３軸炭素繊維織物は、互いに並行する織糸同士の間
隔が５〜150mmの範囲にあることを特徴とする炭素繊維
補強無機質板を提供する。(Means for Solving the Problems) In order to achieve the above object, the present invention comprises a composite of a resin-fixed triaxial carbon fiber woven fabric and an inorganic material, and
The above triaxial carbon fiber woven fabric provides a carbon fiber reinforced inorganic plate characterized in that the intervals between the parallel weaving yarns are in the range of 5 to 150 mm.
この考案における無機質材は、無機質板のマトリクスを
形成するもので、建材等において通常使用されている、
たとえばポルトランドセメントを結合材とするセメント
材や、ケイ砂と生石灰、または、ケイ砂とセメントとを
結合材とするカルシウム−シリカ材のようなものであ
る。もちろん、砂やじゃり等の骨材を併用することがで
きる。無機質材を補強する３軸炭素繊維織物は、第２図
に示すように、炭素繊維束からなる３本の織糸、すなわ
ち、織糸１（よこ糸）と、織糸２（バイアス糸）と、織
糸３（バイアス系）とが、互いに、57〜63°、好ましく
は60°の角度をなして３方向に延びており、織糸２と織
糸３とは交錯していないが、織糸１がそれら織糸２、３
と交錯して一体化がなされているようなものである。な
お、各織糸は、複数本の炭素繊維束を１組として構成さ
れてもよい。The inorganic material in this invention forms the matrix of the inorganic plate and is usually used in building materials,
For example, a cement material using Portland cement as a binder, a calcium-silica material using silica sand and quick lime, or a silica-sand cement as a binder. Of course, aggregates such as sand and jelly can be used together. As shown in FIG. 2, the triaxial carbon fiber woven fabric that reinforces the inorganic material has three weaving yarns composed of carbon fiber bundles, namely, weaving yarn 1 (weft yarn), weaving yarn 2 (bias yarn), The woven yarn 3 (bias system) extends in three directions at an angle of 57 to 63 °, preferably 60 ° with respect to each other, and the woven yarn 2 and the woven yarn 3 do not intersect, 1 is those yarns 2, 3
It is like intermingling with and integrating. It should be noted that each woven yarn may be constituted by a plurality of carbon fiber bundles as one set.
各織糸を構成している炭素繊維束は、単糸径が５〜50μ
ｍ、単糸数が3,000〜30,000本程度のものであるのが好
ましい。また、引張強度が250kg/mm2以上で、引張弾性
率が18,000kg/mm2以上であるようなものが好ましい。な
お、炭素繊維束は、集束性を向上させるための少々の撚
を有していてもよい。The carbon fiber bundles that make up each woven yarn have a single yarn diameter of 5 to 50μ.
m, and the number of single yarns is preferably about 3,000 to 30,000. Further, it is preferable that the tensile strength is 250 kg / mm 2 or more and the tensile elastic modulus is 18,000 kg / mm 2 or more. In addition, the carbon fiber bundle may have a slight twist for improving the focusing property.
上述した３軸炭素繊維織物には、織糸にエポキシ樹脂、
不飽和ポリエステル樹脂、フェノール樹脂等の熱硬化性
樹脂が含浸、硬化されている。すなわち、樹脂で固めら
れている。The above-mentioned triaxial carbon fiber woven fabric includes an epoxy resin for the woven yarn,
Thermosetting resin such as unsaturated polyester resin and phenol resin is impregnated and cured. That is, it is hardened with resin.
さて、３軸炭素繊維織物は、互いに並行する織糸同士の
間隔、すなわち、第２図において、互いに対向する、織
糸１同士、織糸２同士および織糸３同士の間隔が、５〜
150mmの範囲になっている。これは、３本の織糸１、
２、３で形成される正六角形状の織目の、互いに対向す
る２辺間の距離ということである。そうして、織糸間隔
が5mm未満では、製造時に無機質材や骨材、特に骨材が
入りにくくなって無機質板の均質性が損われ、破壊強度
等が低下するようになる。また、150mmよりも大きくな
ると、補強効果が著しく小さくなって比強度や比弾性率
が大きく低下するようになるばかりか、無機質板に割れ
ができたときに割片が落下しやすくなり、建材等として
使用するのに適さなくなる。このように、この考案で使
用する３軸炭素繊維織物は、織組織をとってはいるが、
通常の織物のように織糸密度が高くはなく、粗い、いわ
ゆるメッシュ織物の形態をとっている。In the triaxial carbon fiber woven fabric, the distance between the parallel weaving yarns, that is, the distance between the weaving yarns 1, the weaving yarns 2 and the weaving yarns 3 facing each other in FIG.
It is in the range of 150 mm. This is three woven threads 1,
This is the distance between two sides of a regular hexagonal weave formed of two and three that face each other. Thus, if the weaving yarn interval is less than 5 mm, it becomes difficult for the inorganic material or aggregate, particularly the aggregate, to enter during manufacturing, the homogeneity of the inorganic plate is impaired, and the fracture strength and the like decrease. Also, if it is larger than 150 mm, not only the reinforcing effect is remarkably reduced and the specific strength and the specific elastic modulus are greatly lowered, but also when the inorganic plate is cracked, the split pieces are likely to drop, and the building materials, etc. No longer suitable for use as. Thus, although the triaxial carbon fiber woven fabric used in this invention has a woven structure,
It does not have a high yarn density like ordinary fabrics, but takes the form of a coarse, so-called mesh fabric.
この考案の無機質板は、いろいろな方法によって製造す
ることができる。たとえば、型枠を用い、その型枠内に
３軸炭素繊維織物を置き、スラリー状の無機質材を流し
込んで固めることによって製造することができる。この
とき、３軸炭素繊維織物は、任意の位置に配置すること
ができる。無機質材の種類や、無機質板の用途等に応じ
て決める。たとえば、無機質材が、セメント等の、圧縮
強度にくらべて引張強度が著しく低いものである場合に
は、引張力が作用する側に必ず３軸織物を配置するよう
にする。The inorganic plate of the present invention can be manufactured by various methods. For example, it can be manufactured by using a mold, placing a triaxial carbon fiber woven fabric in the mold, and pouring and solidifying an inorganic material in a slurry form. At this time, the triaxial carbon fiber woven fabric can be arranged at any position. It is determined according to the type of inorganic material and the use of the inorganic plate. For example, when the inorganic material has a significantly lower tensile strength than the compressive strength such as cement, the triaxial woven fabric should be arranged on the side where the tensile force acts.
（実施態様） 第１図において、無機質板は、２枚の、第２図に示した
３軸炭素繊維織物４、４と、無機質材５とを複合してな
る。３軸炭素繊維織物４、４は、曲げによる引張応力や
圧縮応力が作用する表面近くに配置されている。(Embodiment) In FIG. 1, an inorganic plate is formed by combining two sheets of triaxial carbon fiber woven fabric 4, 4 shown in FIG. 2 and an inorganic material 5. The triaxial carbon fiber fabrics 4 and 4 are arranged near the surface on which tensile stress and compressive stress due to bending act.
（実施例） 東レ株式会社炭素繊維束“トレカ"T300−12k（単糸径:7
μｍ、単糸数:12,000本、引張強度:360kgf/mm2：引張弾
性率:23,500kgf/mm2）を６本引き揃えて織糸とし、織糸
同士の間隔が45mmの３軸炭素繊維織物を作り、エポキシ
樹脂を含浸、硬化させて固めた。(Example) Toray Industries, Inc. carbon fiber bundle "Torayca" T300-12k (single yarn diameter: 7
μm, number of single yarn: 12,000, tensile strength: 360kgf / mm 2 : Tensile elastic modulus: 23,500kgf / mm 2 ) 6 pieces are aligned to form a weaving thread, and a triaxial carbon fiber woven fabric with a spacing between the weaving threads of 45mm It was made, impregnated with epoxy resin, cured and hardened.
次に、エポキシ樹脂で固めた３軸炭素繊維織物を、縦お
よび横が500mm、深さが20mmの型枠の下面に配置し、そ
の上からケイ砂を含むポルトランドセメント（ケイ砂の
セメントに対する重量比:0.65、水のセメントに対する
重量比:0.35）を流し込み、面圧3kgf/cm2でプレスし
て、縦および横が500mm、厚みが20mmの無機質板を得
た。なお、３軸炭素繊維織物は、そのよこ糸が無機質板
の端面と平行になるように配置した。Next, a triaxial carbon fiber woven fabric hardened with epoxy resin is placed on the lower surface of the formwork having a length and width of 500 mm and a depth of 20 mm, and from there, Portland cement containing silica sand (weight of silica sand relative to cement) Ratio: 0.65, weight ratio of water to cement: 0.35) was poured and pressed at a surface pressure of 3 kgf / cm 2 to obtain an inorganic plate having a length and width of 500 mm and a thickness of 20 mm. The triaxial carbon fiber woven fabric was arranged such that its weft yarn was parallel to the end face of the inorganic plate.
この無機質板の４点を支持し、直径が50mmの圧子を用い
て中央集中載荷による曲げ試験をしたところ、300kgf負
荷時における中央部のたわみは2.84mm、クラック発生荷
重は229kgf最大荷重は1205kgfであった。クラックはよ
こ糸およびバイアス糸に沿って中央部付近のみに認めら
れ、端面には観察されなかった。A bending test by centralized loading using an indenter with a diameter of 50 mm supporting 4 points of this inorganic plate showed a deflection of the central part of 2.84 mm at a load of 300 kgf, a cracking load of 229 kgf and a maximum load of 1205 kgf. there were. Cracks were found only near the center along the weft yarn and the bias yarn, and were not observed on the end face.
（比較例） 実施例で用いた炭素繊維束を織糸とし、織糸同士の間隔
が30mmの２軸炭素繊維織物を作り、エポキシ樹脂を含
浸、硬化させて固めた。以下、実施例と同様に無機質板
を作り、試験をしたところ、300kgf負荷時における中央
部のたわみは3.56mm、クラック発生荷重は183kgf、最大
荷重は958kgfであった。クラックは、実施例のものとは
異なり、経糸や緯糸に沿って中央部から端面まで延びて
いた。(Comparative Example) The carbon fiber bundle used in the examples was used as a weaving yarn, and a biaxial carbon fiber fabric having a spacing between the weaving yarns of 30 mm was prepared, impregnated with an epoxy resin, and cured to harden it. In the following, an inorganic plate was prepared and tested in the same manner as in the example, and it was found that the deflection at the central portion at the time of 300 kgf load was 3.56 mm, the cracking load was 183 kgf, and the maximum load was 958 kgf. Unlike the example, the crack extended from the central portion to the end face along the warp and the weft.
（考案の効果） この考案の無機質板は、ただ１枚でも補強効果が高く、
しかも、等方性に優れた３軸炭素繊維織物を使用してい
るから、比強度、比弾性率に優れるばかりか、これらの
特性に関して等方性に優れている。また、２軸織物を使
用するときのように配置に気を配らなくても、すべての
織糸が応力を分担するようになるからクラックの発生、
成長の心配が少ないばかりか、疑似等方積層法の採用を
あえて必要としないから層間剥離の心配も少なく。さら
に、所望の部位に３軸炭素繊維織物を配置することで、
効果的な補強ができる。(Effect of device) Even if only one inorganic plate of this device has a high reinforcing effect,
Moreover, since the triaxial carbon fiber woven fabric having excellent isotropy is used, not only the specific strength and the specific elastic modulus are excellent, but also the isotropic properties are excellent. Further, even if care is not taken in the arrangement as in the case of using a biaxial woven fabric, all the weaving yarns share the stress, so cracks occur,
There is little concern about growth, and there is little concern about delamination because it does not need to adopt the pseudo isotropic lamination method. Furthermore, by arranging the triaxial carbon fiber woven fabric at a desired portion,
Can be effectively reinforced.
第１図は、この考案の一実施態様に係る炭素繊維補強無
機質板を示す、一部破断した概略斜視図、第２図は、こ
の考案で使用する３軸炭素繊維織物の一例を示す概略平
面図である。 1:織糸（よこ糸） 2:織糸（バイアス糸） 3:織糸（バイアス糸） 4:3軸炭素繊維織物 5:無機質材FIG. 1 is a partially cutaway schematic perspective view showing a carbon fiber reinforced inorganic plate according to an embodiment of the present invention, and FIG. 2 is a schematic plan view showing an example of a triaxial carbon fiber woven fabric used in the present invention. It is a figure. 1: Woven yarn (weft yarn) 2: Woven yarn (bias yarn) 3: Woven yarn (bias yarn) 4: Triaxial carbon fiber woven fabric 5: Inorganic material
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭50−13673（ＪＰ，Ａ) 特開 昭50−132260（ＪＰ，Ａ) 特開 昭63−55146（ＪＰ，Ａ) 特公 昭49−8423（ＪＰ，Ｂ１) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-50-13673 (JP, A) JP-A-50-132260 (JP, A) JP-A-63-55146 (JP, A) JP-B-49- 8423 (JP, B1)
Claims (1)
とを複合してなり、かつ、上記３軸炭素繊維織物は、互
いに並行する織糸同士の間隔が５〜150mmの範囲にある
ことを特徴とする炭素繊維補強無機質板。1. A composite of a resin-fixed triaxial carbon fiber woven fabric and an inorganic material, and in the triaxial carbon fiber woven fabric, the distance between parallel weaving yarns is in the range of 5 to 150 mm. A carbon fiber reinforced inorganic board characterized by the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988161484U JPH0726343Y2 (en) | 1988-12-12 | 1988-12-12 | Carbon fiber reinforced inorganic board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988161484U JPH0726343Y2 (en) | 1988-12-12 | 1988-12-12 | Carbon fiber reinforced inorganic board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0282736U JPH0282736U (en) | 1990-06-26 |
| JPH0726343Y2 true JPH0726343Y2 (en) | 1995-06-14 |
Family
ID=31444463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988161484U Expired - Lifetime JPH0726343Y2 (en) | 1988-12-12 | 1988-12-12 | Carbon fiber reinforced inorganic board |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0726343Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002127297A (en) * | 2000-10-24 | 2002-05-08 | Japan Atom Energy Res Inst | Gypsum board |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2227950B1 (en) * | 1973-05-04 | 1978-06-02 | Du Pont | |
| US3874422A (en) * | 1974-03-13 | 1975-04-01 | Doweave Inc | Triaxially woven fabrics of uniform compliancy and porosity |
| JPS6032608A (en) * | 1983-08-04 | 1985-02-19 | 株式会社栗本鐵工所 | Fiber reinforced cement molding |
| JPS6355146A (en) * | 1986-08-26 | 1988-03-09 | 東レ株式会社 | Fiber reinforced inorganic material |
| JPS63197750A (en) * | 1987-02-13 | 1988-08-16 | 新日本製鐵株式会社 | Carbon fiber reinforced inorganic board |
-
1988
- 1988-12-12 JP JP1988161484U patent/JPH0726343Y2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002127297A (en) * | 2000-10-24 | 2002-05-08 | Japan Atom Energy Res Inst | Gypsum board |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0282736U (en) | 1990-06-26 |
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