JP3018583B2 - Extruded body manufacturing method - Google Patents
Extruded body manufacturing methodInfo
- Publication number
- JP3018583B2 JP3018583B2 JP3145747A JP14574791A JP3018583B2 JP 3018583 B2 JP3018583 B2 JP 3018583B2 JP 3145747 A JP3145747 A JP 3145747A JP 14574791 A JP14574791 A JP 14574791A JP 3018583 B2 JP3018583 B2 JP 3018583B2
- Authority
- JP
- Japan
- Prior art keywords
- extruded product
- extruded
- reinforcing material
- thermoplastic resin
- dough
- 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
Description
【０００１】[0001]
【産業上の利用分野】本発明は、高強度の無機質押出成
形体の製造方法に関する。The present invention relates to a method for producing a high-strength inorganic extruded product.
【０００２】[0002]
【従来の技術】無機質押出成形体は、生地を構成する材
料を混練し、任意の形状の口金から押出し成形するもの
で、長尺の中空断面材などを能率よく製造することがで
きる。このような無機質押出成形体は、強度を必要とす
るスラブ等として用いる場合、プレストレスを導入する
ことが知られている。例えば特願昭６１−１８４４７３
号公報には、溝つきのスラブを押出成形しておき、この
溝にＰＣ鋼材を埋込んでプレストレスを導入する技術が
開示されている。2. Description of the Related Art An inorganic extruded product is obtained by kneading a material constituting a dough and extruding the material from a die having an arbitrary shape, and can efficiently produce a long hollow section material or the like. It is known that such an inorganic extruded product introduces prestress when used as a slab or the like that requires strength. For example, Japanese Patent Application No. 61-184473
Japanese Patent Application Laid-Open Publication No. H11-163,897 discloses a technique in which a grooved slab is extruded and a PC steel material is embedded in the groove to introduce prestress.
【０００３】[0003]
【発明が解決しようとする課題】上記従来技術では、押
出成形工程及びＰＣ鋼材埋込工程の２つの工程を要し、
製造手間がかかる問題がある。また、ＰＣ鋼材の端部緊
張材を取外すことができない。本発明はこのような問題
点を解決した高強度の押出成形体の製造方法を容易に製
造する方法を提供することを目的とする。The above prior art requires two processes, an extrusion molding process and a PC steel material embedding process.
There is a problem that manufacturing time is required. In addition, the end tension member of the PC steel cannot be removed. An object of the present invention is to provide a method for easily manufacturing a method for manufacturing a high-strength extruded body that solves such problems.
【０００４】[0004]
【課題を解決するための手段】本発明は熱可塑性樹脂を
塗布した補強材を成形体の生地中に挿入しながら無機質
押出成形体を押出成形し、この押出成形品の生地の強度
が所定値に到達するまで養生した後、前記補強材を緊張
し、次いで押出成形体を高温養生し強度の向上及び熱可
塑性樹脂を介し、生地と補強材との緊密な接着を図るこ
とを特徴とする押出成形体の製造方法である。According to the present invention, an inorganic extruded product is extruded while inserting a reinforcing material coated with a thermoplastic resin into the dough of the molded product. After curing until reaching the temperature, the reinforcing material is tensioned, and then the extruded body is cured at high temperature to improve the strength and tightly adhere the dough and the reinforcing material via the thermoplastic resin. This is a method for producing a molded article.
【０００５】本発明に用いる熱可塑性樹脂は、押出成形
体の高温養生温度、例えばオートクレーブ養生（約１８
０℃）において溶融状態を呈し、押出成形体生地及び補
強材の両者と強固に結合する素材を用いる。このような
熱可塑性樹脂としてはポリ塩化ビニル、ポリビニルホル
マール、ポリスチレン、スチレン・アクリロニトリル共
重合体、ＡＢＳ、ポリプロピレン、変性アクリル、フェ
ノキシを用いることができる。[0005] The thermoplastic resin used in the present invention may be cured at a high temperature, for example, in an autoclave (about 18).
A material that exhibits a molten state at 0 ° C.) and is strongly bonded to both the extruded material and the reinforcing material is used. As such a thermoplastic resin, polyvinyl chloride, polyvinyl formal, polystyrene, styrene / acrylonitrile copolymer, ABS, polypropylene, modified acrylic, and phenoxy can be used.
【０００６】[0006]
【作用】本発明では押出成形時に同時に補強材を押出成
形品内に挿入し、高温養生により、補強材と押出成形体
の生地とを密着させる。従って、（ａ） 溝を形成する
必要がなく、別途にＰＣ鋼材を溝に嵌め込む工程も不要
である。According to the present invention, the reinforcing material is inserted into the extruded product at the same time as the extrusion molding, and the reinforcing material and the material of the extruded product are brought into close contact by high-temperature curing. Therefore, (a) there is no need to form a groove, and there is no need to separately insert a PC steel material into the groove.
【０００７】（ｂ） 高温養生により押出成形体の生地
の高強度化を図ると共に、ＰＣ鋼材に塗布した熱可塑性
樹脂を溶着させてＰＣ鋼材と押出成形体の生地とを密着
させる。この密着により、補強材に取付けた緊張用の部
材を取外すことができる。従って、緊張用の部材として
押出成形体の両端の成形体内に複雑な構造を形成する必
要がなく、成形体両端の成形体外部において緊張を行
い、最終的にはこれらを取外すことによって、成形体両
端部の形状を使用目的に適合した形の部材とすることが
でき、本発明による押出成形体の汎用性を高めることが
できる。(B) The extruded body is strengthened by high-temperature curing, and a thermoplastic resin applied to the PC steel is welded to bring the PC steel into close contact with the extruded body. By this close contact, the tension member attached to the reinforcing member can be removed. Therefore, it is not necessary to form a complicated structure as a member for tensioning in the molded body at both ends of the extruded molded body. The shape of the both ends can be a member adapted to the purpose of use, and the versatility of the extruded product according to the present invention can be enhanced.
【０００８】[0008]
【実施例】図１に本発明の実施例の押出成形体１の縦断
面図を示した。セメント４５重量％、珪砂１５重量％、
細骨材２４重量％、石綿１５重量％、増粘剤１重量％か
らなる無機質押出成形体１に、熱可塑性樹脂３として変
性アクリル樹脂を用い、これをコーテイングした補強材
２としてＰＣ鋼棒を押出成形時に挿入し、所定の長さで
切断した。２０℃、ＲＨ９５％の恒温恒湿槽にて１２時
間養生した後、支圧板４を介してナットを締め、緊張し
た。次に、１８０℃×５時間のオートクレーブ養生を施
し、常温後、緊張材（ナット５及び支圧板４）を取外し
高強度押出成形体１を取得した。FIG. 1 is a longitudinal sectional view of an extruded product 1 according to an embodiment of the present invention. 45% by weight of cement, 15% by weight of silica sand,
A modified acrylic resin is used as a thermoplastic resin 3 for an inorganic extruded product 1 composed of 24% by weight of fine aggregate, 15% by weight of asbestos, and 1% by weight of a thickener, and a PC steel rod is used as a reinforcing material 2 coated with this. It was inserted at the time of extrusion molding and cut to a predetermined length. After curing in a thermo-hygrostat at 20 ° C. and RH 95% for 12 hours, the nut was tightened through the support plate 4 and tensioned. Next, autoclave curing was performed at 180 ° C. for 5 hours, and after room temperature, the tension members (nut 5 and support plate 4) were removed to obtain a high-strength extruded product 1.
【０００９】このようにして製造した実施例と、補強材
を挿入しない比較例について、３点曲げ試験を行った。
供試体の断面係数は２６．７ｃｍ3 、スパン４０ｃｍ、
中央一線載荷し、ひび割れ発生荷重を測定した。測定結
果、比較例のひび割れ発生荷重は４６６ｋｇｆであるの
に対し、実施例では６９２ｋｇｆとなった。すなわち、
実施例のＰＣ鋼材を挿入し緊張したものは、比較例のプ
レストレス無しのものに比べ、ひび割れ発生荷重が、
１．５倍になり高強度を必要とするスラブ等に十分使用
可能となった。A three-point bending test was performed on the thus manufactured example and a comparative example in which no reinforcing material was inserted.
The section modulus of the specimen is 26.7 cm 3 , the span is 40 cm,
The center line was loaded, and the crack generation load was measured. As a result of the measurement, the crack generation load of the comparative example was 466 kgf, while the load of the comparative example was 692 kgf. That is,
When the PC steel of the example was inserted and tensioned, the crack generation load was higher than that of the comparative example without pre-stress.
It is 1.5 times larger and can be used sufficiently for slabs and the like that require high strength.
【００１０】[0010]
【発明の効果】本発明によれば、無機質押出成形体の高
温養生過程において、熱可塑性樹脂を介して生地と補強
材とを緊密に密着させることができ、高強度の押出成形
品を容易に製造することができる。According to the present invention, the dough and the reinforcing material can be closely adhered to each other via the thermoplastic resin during the high-temperature curing process of the inorganic extruded product, so that a high-strength extruded product can be easily produced. Can be manufactured.
【図１】実施例の縦断面図である。FIG. 1 is a longitudinal sectional view of an embodiment.
１ 押出成形体 ２ 補強材 ３ 熱可塑性樹脂 ４ 支圧板 ５ ナット DESCRIPTION OF SYMBOLS 1 Extruded body 2 Reinforcement material 3 Thermoplastic resin 4 Support plate 5 Nut
フロントページの続き (72)発明者 神谷 清志 埼玉県大宮市北袋町１丁目297番地 三 菱マテリアル株式会社 セメント研究所 内 (56)参考文献 特開 昭61−49803（ＪＰ，Ａ) 特開 昭51−74013（ＪＰ，Ａ) 特開 昭62−39204（ＪＰ，Ａ) 特開 昭62−39203（ＪＰ，Ａ) 特開 昭63−41105（ＪＰ，Ａ) 特開 平３−216304（ＪＰ，Ａ) 特開 昭63−216709（ＪＰ，Ａ) 特開 平２−216270（ＪＰ，Ａ) 特開 昭52−82921（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B28B 3/20 B28B 23/06,23/04 Continuation of the front page (72) Inventor Kiyoshi Kamiya 1-297 Kitabukuro-cho, Omiya-shi, Saitama Mitsui Materials Co., Ltd. Cement Research Institute (56) References JP-A-61-49803 (JP, A) JP-A-51 JP-A-74013 (JP, A) JP-A-62-39204 (JP, A) JP-A-62-39203 (JP, A) JP-A-63-41105 (JP, A) JP-A-3-216304 (JP, A) JP-A-63-216709 (JP, A) JP-A-2-216270 (JP, A) JP-A-52-82921 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) B28B 3/20 B28B 23 / 06,23 / 04
Claims (1)
の生地中に挿入しながら無機質押出成形体を押出成形
し、該押出成形品の生地の強度が所定値に到達するまで
養生した後、前記補強材を緊張し、次いで押出成形体を
高温養生し強度の向上及び前記熱可塑性樹脂を介し、生
地と補強材との緊密な接着を図ることを特徴とする押出
成形体の製造方法。1. Extruding an inorganic extruded product while inserting a reinforcing material coated with a thermoplastic resin into the dough of the molded product, and curing the extruded product until the strength of the dough of the extruded product reaches a predetermined value. A method for producing an extruded product, wherein the reinforcing material is strained, and then the extruded product is cured at a high temperature to improve the strength and tightly adhere the dough and the reinforcing material via the thermoplastic resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3145747A JP3018583B2 (en) | 1991-06-18 | 1991-06-18 | Extruded body manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3145747A JP3018583B2 (en) | 1991-06-18 | 1991-06-18 | Extruded body manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04368813A JPH04368813A (en) | 1992-12-21 |
| JP3018583B2 true JP3018583B2 (en) | 2000-03-13 |
Family
ID=15392220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3145747A Expired - Lifetime JP3018583B2 (en) | 1991-06-18 | 1991-06-18 | Extruded body manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3018583B2 (en) |
-
1991
- 1991-06-18 JP JP3145747A patent/JP3018583B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04368813A (en) | 1992-12-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19991130 |