JP4589694B2 - Method for producing colored cement-based molding material and method for producing colored cement-based molded article - Google Patents

Method for producing colored cement-based molding material and method for producing colored cement-based molded article Download PDF

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JP4589694B2
JP4589694B2 JP2004311404A JP2004311404A JP4589694B2 JP 4589694 B2 JP4589694 B2 JP 4589694B2 JP 2004311404 A JP2004311404 A JP 2004311404A JP 2004311404 A JP2004311404 A JP 2004311404A JP 4589694 B2 JP4589694 B2 JP 4589694B2
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cement
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molding material
carbon black
colored cement
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JP2006124197A (en
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宏 渡邉
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KMEW Co Ltd
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Kubota Matsushitadenko Exterior Works Ltd
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Description

本発明は、屋根瓦などの外装建材等のセメント系成形品を製造するためのセメント系成形材料の製造方法びセメント系成形品の製造方法に関し、詳しくは材料自身が着色された着色セメント系成形材料の製造方法び着色セメント系成形品の製造方法に関するものである。 The present invention relates to a method method for producingbeauty cement-based molded article of the cementitious molding material for manufacturing cement-based molded articles such as exterior building materials such as roof tiles, details that material itself is colored colored cement a process for producing method of manufacturingbeauty wearing color cement moldings systems molding material.

従来、セメントを主成分とするセメント系成形材料を用いて屋根瓦などの外装建材を製造することが行われている。このような外装建材は、黒色系の外観を付与することが広く行われており、このためセメント系成形品にてこのような外層建材等を製造する場合には、セメント形成成形品に塗装を施すことで着色するようにしていた。   2. Description of the Related Art Conventionally, an exterior building material such as a roof tile is manufactured using a cement-based molding material containing cement as a main component. Such exterior building materials are widely imparted with a black appearance. Therefore, when manufacturing such outer-layer building materials with cement-based molded products, the cement-formed molded products are painted. It was made to color by applying.

しかし、塗装による着色では長期間屋外に曝露されることにより塗装が剥げ落ちることが多く、また塗装のための手間もかかるため、セメント系成形材料自体を着色してこれを成形することでセメント形成成形品を得る手法が求められていた。   However, when painting with paint, the paint often peels off when exposed to the outdoors for a long time, and it takes time for painting. There has been a demand for a method for obtaining a molded product.

そこで、このような着色セメント系成形材料を得るための方法として、顔料をセメント系成形材料に含有させることが行われていた。   Therefore, as a method for obtaining such a colored cement-based molding material, a pigment has been added to the cement-based molding material.

しかし、顔料として酸化鉄(黒)(メタルブラック)を添加してセメント系成形材料を着色すると、この場合は屋外曝露しても褪色劣化しにくいものではあるが、着色性が極端に乏しく、多くの添加量を必要としてしまい、コスト面でのデメリットが大きかった。   However, when iron oxide (black) (metal black) is added as a pigment and the cement-based molding material is colored, in this case, even though it is exposed to the outdoors, it is hard to fade, but the colorability is extremely poor, and many As a result, the disadvantage of cost was great.

一方、顔料としてカーボンブラック等の有機顔料を添加する場合には、このような有機顔料は粒径が小さいためにセメント水和物の空隙を通り抜けやすく、且つセメント材料との親和性が小さいために、このようなセメント系成形材料にて得られるセメント系成形品が風雨に曝された場合にカーボンブラック等が雨水と共に外部へ流出し、褪色しやすいものであった。   On the other hand, when an organic pigment such as carbon black is added as a pigment, since such an organic pigment has a small particle size, it easily passes through the voids of cement hydrate and has a low affinity with the cement material. When a cement-based molded product obtained from such a cement-based molding material is exposed to wind and rain, carbon black or the like flows out together with rainwater and easily fades.

このような問題の解決を図るために、例えば特開2000−226243号公報や特開2000−26141号公報等において、カーボンブラックに親水性付与のための表面処理を施したり、カーボンブラックの粒径を大きくしたり、セメント基材に内添撥水剤を添加したりすることが提案されているが、この場合、多少の褪色防止の作用は得られるものの、十分ではなく、また粒径を大きくしたり表面処理を施したりしたカーボンブラックを添加すると着色性が低下してしまうものでもあった。   In order to solve such a problem, for example, in JP-A-2000-226243 and JP-A-2000-26141, surface treatment for imparting hydrophilicity to carbon black or the particle size of carbon black is performed. Although it has been proposed to add an internal water repellent to the cement substrate, in this case, although some anti-fading action is obtained, it is not sufficient, and the particle size is increased. Addition of carbon black that has been subjected to surface treatment or surface treatment has resulted in a reduction in colorability.

また、特許文献1等において、有機顔料を含有するポリマーセメントを成形することにより、成形品における有機顔料とポリマーとの結合によって有機顔料の流出の防止を図ることも提案されているが、成形品中でのポリマーと有機顔料との間の結合力を十分に発現させることが困難であり、そのため褪色を十分に防ぐことはできないものであった。
特表平11−510139号公報
Further, in Patent Document 1 and the like, it has been proposed to prevent the outflow of the organic pigment by bonding the organic pigment and the polymer in the molded article by molding a polymer cement containing the organic pigment. It was difficult to sufficiently develop the bonding force between the polymer and the organic pigment in the inside, and therefore, fading could not be sufficiently prevented.
Japanese National Patent Publication No. 11-510139

本発明は上記の点に鑑みて為されたものであり、塗装を施すことなく着色され且つ屋外に長期間曝露されるような場合でも褪色が生じくい着色セメント系成形品を製造することができる着色セメント系成形材料の製造方法、及びこの着色セメント系成形材料を用いる着色セメント系成形品の製造方法を提供することを目的とするものである。 The present invention has been made in view of the above, it is colored and discolored even as long-term exposure to outdoor producing pile colored cementitious shaped article to occur without applying paint It is an object of the present invention to provide a method for producing a colored cement-based molding material that can be produced, and a method for producing a colored cement-based molded article using the colored cement-based molding material.

本発明に係る着色セメント系成形材料の製造方法はセメント含有W/O型エマルジョン組成物からなる着色セメント系成形材料の製造方法であり、ビニルモノマー、水、逆乳化剤及びカーボンブラックを混合攪拌してカーボンブラックがビニルモノマーに取り込まれたW/O型エマルジョン組成物を調製した後、このW/O型エマルジョン組成物をセメントと共に混合することを特徴とするものである。これにより、W/O型エマルジョン組成物中ではカーボンブラックがビニルモノマーに取り込まれ、このW/O型エマルジョン組成物を用いて調製されるセメント含有W/O型エマルジョン組成物中においてもカーボンブラックがビニルモノマーに取り込まれた状態になることから、この着色セメント系成形材料を用いて着色セメント系成形品を製造すると、塗装を施すことなく着色された着色セメント系成形品を得ることができ、またこの着色セメント系成形品においてはカーボンブラックはビニルモノマーが重合したポリマー中に完全に取り込まれて固定されることとなり、このため着色セメント系成形品中の空隙をカーボンブラックが通り抜けることを防止することができる。またセメント含有W/O型エマルジョン組成物から製造した着色セメント系成形品は耐透水性、撥水性が高く、風雨に曝された場合でもカーボンブラックの流出が防止されるものである。 Method for producing a colored cementitious molding material according to the present invention is a method for producing a colored cementitious molding material consisting of cement-containing W / O type emulsion composition, a vinyl monomer, water, and mixed by stirring to reverse emulsifier and carbon black after the carbon black was prepared W / O emulsion composition incorporated into the vinyl monomer, the W / O emulsion composition is characterized in that mixing with cement. As a result, carbon black is incorporated into the vinyl monomer in the W / O type emulsion composition, and carbon black is also contained in the cement-containing W / O type emulsion composition prepared using this W / O type emulsion composition. Since the colored cement-based molding material is used to produce a colored cement-based molded product, it is possible to obtain a colored cement-based molded product without applying paint. In this colored cement-based molded article, carbon black is completely taken in and fixed in the polymer in which the vinyl monomer is polymerized. Therefore, it is possible to prevent the carbon black from passing through the voids in the colored cement-based molded article. Can do. Further, the colored cement-based molded article produced from the cement-containing W / O emulsion composition has high water permeability and water repellency, and prevents carbon black from flowing out even when exposed to wind and rain.

この着色セメント系成形材料の製造方法においては、カーボンブラックの含有量を、セメント含有W/O型エマルジョン組成物中の固形分190質量部に対して0.5〜1.0質量部の範囲となるようにすることが好ましい。このようにすると、着色セメント系成形材料を用いて製造される着色セメント系成形品の曲げ強度を高く維持することができるものである。 In the method for producing the colored cement-based molding material, the carbon black content is in the range of 0.5 to 1.0 part by mass with respect to 190 parts by mass of the solid content in the cement-containing W / O emulsion composition. It is preferable to do so. If it does in this way, the bending strength of the colored cement type molded article manufactured using a colored cement type molding material can be maintained high.

また、本発明に係る着色セメント系成形品の製造方法は、上記のような着色セメント系成形材料を成形し、養生硬化すると共にビニルモノマーを重合させることを特徴とするものであり、これにより、上記のように着色セメント系成形品中の空隙をカーボンブラックが通り抜けることを防止することができ、またセメント含有W/O型エマルジョン組成物から製造した着色セメント系成形品は耐透水性、撥水性が高く、風雨に曝された場合でもカーボンブラックの流出が防止されるものである A method of manufacturing a colored cementitious shaped article according to the present invention, which by forming a colored cementitious molding material as described above, characterized by the Turkey by polymerizing a vinyl monomer as well as aging hardening, which Thus, it is possible to prevent the carbon black from passing through the voids in the colored cement-based molded product as described above, and the colored cement-based molded product produced from the cement-containing W / O emulsion composition is water-resistant. High water repellency, preventing carbon black from flowing out even when exposed to wind and rain

本発明によれば、着色セメント系成形材料を用いることで、塗装を施すことなく着色され且つ屋外に長期間曝露されるような場合でも褪色が生じくい着色セメント系成形品を得ることができるものである。 According to the present invention, by using a colored cementitious molding material, it is possible to fade even as long-term exposure to colored and outdoors without performing coating to obtain a pile colored cementitious shaped article to occur Is.

以下、本発明を実施するための最良の形態を説明する。   Hereinafter, the best mode for carrying out the present invention will be described.

本発明では、ビニルモノマー、水、逆乳化剤及びカーボンブラックを混合攪拌してW/O型エマルジョン組成物を調製した後、このW/O型エマルジョン組成物とセメントとを混合することでセメント含有W/O型エマルジョン組成物からなる着色セメント系成形材料を得るものである。ここで、W/O型エマルジョン組成物を調製するにあたっては必要に応じて重合開始剤等を含有させることができ、また着色セメント系成形材料中には必要に応じて骨材、補強繊維といた補強材等を含有させることもできる。 In the present invention, a W / O emulsion composition is prepared by mixing and stirring a vinyl monomer, water, a reverse emulsifier, and carbon black, and then the W / O emulsion composition and cement are mixed to prepare a cement-containing W. A colored cement-based molding material comprising an / O type emulsion composition is obtained. Here, in preparing the W / O type emulsion composition, a polymerization initiator or the like can be included as necessary, and the colored cement-based molding material includes aggregates and reinforcing fibers as necessary. A reinforcing material or the like can also be contained.

ビニルモノマーとしては、水とW/Oエマルジョンを形成しうるものであれば、特に制限はなく、通常疎水性の液状物質が利用されるが、例えばスチレン、ジビニルベンゼン、メチルメタクリレート、トリメチロールプロパントリメタクリレート、不飽和ポリエステル樹脂等が挙げられる。これらのビニルモノマーを用いれば、これらが重合したポリマーがマトリックスを形成して得られるセメント複合材の物理的、機械的性質を向上すると共に、後述するように得られるセメント複合材中の独立気孔中に水が浸入しにくくなり、吸水率を低下させることができるので好ましい。このビニルモノマーの使用量は、最終的に得られる着色セメント系成形材料中の水と固形分の総量に対して5〜10体積%の範囲であることが好ましい。   The vinyl monomer is not particularly limited as long as it can form a W / O emulsion with water, and usually a hydrophobic liquid substance is used. For example, styrene, divinylbenzene, methyl methacrylate, trimethylolpropane tri-vinyl is used. Examples include methacrylate and unsaturated polyester resin. Using these vinyl monomers improves the physical and mechanical properties of the cement composite obtained by polymerizing these polymers to form a matrix, as well as in the independent pores in the cement composite obtained as described below. It is preferable because water becomes difficult to enter and water absorption can be reduced. The amount of the vinyl monomer used is preferably in the range of 5 to 10% by volume with respect to the total amount of water and solid content in the finally obtained colored cement-based molding material.

また、逆乳化剤はW/O型エマルジョンに安定性を付与するために配合されるものであり、例えばソルビタンセスキオール、グリセロールモノステアレート、ソルビタンモノオレート、ジエチレングリコールモノステアレート、ソルビタンモノステアレート、ジグリセロールモノオレート等の非イオン界面活性剤、各種アニオン系界面活性剤、カチオン系界面活性剤等を用いることができる。逆乳化剤の配合量は最終的に得られる着色セメント系成形材料中の水と固形分の総量に対して1〜3体積%の範囲が好ましい。   The inverse emulsifier is blended to impart stability to the W / O emulsion. For example, sorbitan sesquiol, glycerol monostearate, sorbitan monooleate, diethylene glycol monostearate, sorbitan monostearate, Nonionic surfactants such as glycerol monooleate, various anionic surfactants, cationic surfactants and the like can be used. The blending amount of the reverse emulsifier is preferably in the range of 1 to 3% by volume with respect to the total amount of water and solids in the colored cement-based molding material finally obtained.

また、重合開始剤としては有機過酸化物等の適宜のものを用いることができる。   As the polymerization initiator, an appropriate one such as an organic peroxide can be used.

また、カーボンブラックは着色セメント系成形材料を着色するために用いられるものであり、少量であっても優れた着色効果が得られる。このカーボンブラックの配合量は特に制限されないが、最終的に得られる着色セメント系成形材料中の固形分の総量190質量部に対してカーボンブラックの含有量が0.5質量%以上となるように配合することが好ましく、これにより十分な着色を行うことができる。またカーボンブラックの配合量の上限は特定制限されないが、この配合量が大きくなるとセメント系成形品の曲げ強度が低くなってしまうため、高い曲げ強度を有する着色セメント系成形品を得るためには、着色セメント系成形材料中の固形分(すなわち、セメント及び必要に応じて含有される補強材等)の総量190質量部に対してカーボンブラックの含有量が1.0質量部以下となるようにすることが好ましい。   Carbon black is used for coloring colored cement-based molding materials, and an excellent coloring effect can be obtained even in a small amount. The amount of carbon black is not particularly limited, but the carbon black content is 0.5 mass% or more with respect to 190 mass parts of the total solid content in the finally obtained colored cementitious molding material. It is preferable to mix | blend and, thereby, sufficient coloring can be performed. In addition, the upper limit of the amount of carbon black is not specifically limited, but when this amount is increased, the bending strength of the cement-based molded product is lowered, so in order to obtain a colored cement-based molded product having high bending strength, The carbon black content should be 1.0 parts by mass or less with respect to 190 parts by mass of the total amount of solids in the colored cement-based molding material (that is, cement and reinforcing material contained if necessary). It is preferable.

また、カーボンブラックの粒径は特に制限されないが、高い着色性を発揮するためには0.02μm〜0.1μmの範囲であることが好ましい。   The particle size of carbon black is not particularly limited, but is preferably in the range of 0.02 μm to 0.1 μm in order to exhibit high colorability.

また、水の使用量としては、着色セメント系成形材料の養生硬化に必要とされる適宜の量が用いられ、且つW/O型エマルジョン組成物を調製する際、及びこれとセメント等とを混合して着色セメント系成形材料を調製する際にW/O型エマルジョンを形成できるように調整するものであるが、好ましくは重量比率でセメント1に対して水0.3〜2の範囲とする。   In addition, as the amount of water used, an appropriate amount required for curing and curing colored cement-based molding materials is used, and when preparing a W / O emulsion composition, and mixing this with cement and the like. The colored cement-based molding material is prepared so that a W / O type emulsion can be formed, but the weight ratio is preferably in the range of 0.3 to 2 water with respect to the cement 1.

また、セメントとしては、特に制限されるものではないが、ポルトランドセメント、フライアッシュセメント、高炉セメント、アルミナセメント、ハイアルミナセメント、シリカヒュームなどを挙げることができるものであり、これらを一種単独で用いたり、二種以上を併用したりすることができる。   Further, the cement is not particularly limited, but can include Portland cement, fly ash cement, blast furnace cement, alumina cement, high alumina cement, silica fume, etc., and these can be used alone. Or two or more of them can be used in combination.

また、着色セメント系成形材料中に補強材を含有させる場合には適宜のものを適宜量使用することができるが、例えば砂利、パーライト、シラスバルーン、ガラス粉、アルミナシリケートなどの骨材、ポリプロピレン繊維、アクリル繊維、ビニロン繊維、アラミド繊維等の合成繊維や、炭素繊維、ガラス繊維、パルプなどの補強繊維を用いることができる。   In addition, when a reinforcing material is contained in the colored cement-based molding material, an appropriate amount can be used as appropriate. For example, aggregate such as gravel, perlite, shirasu balloon, glass powder, alumina silicate, polypropylene fiber, etc. Synthetic fibers such as acrylic fiber, vinylon fiber, and aramid fiber, and reinforcing fibers such as carbon fiber, glass fiber, and pulp can be used.

これらの成分を用いて着色セメント系成形材料を得るにあたっては、上記のようにまずビニルモノマー、水、逆乳化剤及びカーボンブラックを配合し、また必要に応じて重合開始剤を加え、これを混合攪拌してW/O型エマルジョン組成物を調製する。このときカーボンブラックはW/O型エマルジョン組成物中においてビニルモノマーに取り込まれて良好に分散される。 In obtaining a colored cement-based molding material using these components, first, as described above, a vinyl monomer, water, a reverse emulsifier and carbon black are blended, and a polymerization initiator is added if necessary, and this is mixed and stirred. Thus, a W / O type emulsion composition is prepared . At this time, carbon black is incorporated into the vinyl monomer in the W / O emulsion composition and is well dispersed.

次に、このようなW/O型エマルジョン組成物とセメントとを配合し、或いは更に必要に応じて補強材等を加えたものを混合し、セメント含有W/O型エマルジョン組成物からなる着色セメント系成形材料を得るものである。このときW/O型エマルジョン組成物中で分散していたカーボンブラックは着色セメント系成形材料中でも良好に分散した状態となる。   Next, a colored cement comprising the cement-containing W / O emulsion composition is prepared by blending such a W / O emulsion composition and cement, or further mixing them with a reinforcing material added if necessary. A system molding material is obtained. At this time, the carbon black dispersed in the W / O type emulsion composition is well dispersed in the colored cement-based molding material.

このような着色セメント系成形材料を所望の形状に成形し、養生硬化させると共にビニルモノマーを重合させることで、着色セメント系成形品が得られるものである。このとき着色セメント系成形品中では、ビニルモノマーが重合したポリマー中にカーボンブラックが完全に取り込まれて固定されることとなり、このため着色セメント系成形品の空隙からのカーボンブラックの通り抜けが防止される。また、着色セメント系成形品はセメント含有W/O型エマルジョン組成物からなる着色セメント系成形材料から形成されるために、撥水性や耐透水性が高く、このため着色セメント系成形品を屋外にて風雨に曝した場合でもカーボンブラックの流出が防止されるものである。   Such a colored cement-based molding material is molded into a desired shape, cured and cured, and a vinyl monomer is polymerized to obtain a colored cement-based molded product. At this time, in the colored cement-based molded article, carbon black is completely taken in and fixed in the polymer in which the vinyl monomer is polymerized, and this prevents the carbon black from passing through the voids of the colored cement-based molded article. The Further, since the colored cement-based molded article is formed from a colored cement-based molding material comprising a cement-containing W / O emulsion composition, the water-repellent and water-permeable properties are high. Even when exposed to wind and rain, the outflow of carbon black is prevented.

従って、上記のようにして得られる着色セメント系成形材料を用いて着色セメント系成形品を形成すると、この着色セメント系成形品は塗装を施すことなくカーボンブラックによって黒色に着色されると共に、この着色セメント系成形品からはカーボンブラックが流出しにくくなっていて褪色が生じにくく、長期間屋外で風雨に曝された場合などにも褪色が生じないものである。このためこの着色セメント系成形品を屋根瓦等の外装建材などとして好適に使用することができる。   Therefore, when a colored cement-based molded product is formed using the colored cement-based molding material obtained as described above, the colored cement-based molded product is colored black by carbon black without being painted, and this coloring From the cement-based molded product, carbon black is difficult to flow out and is not easily discolored, and is not discolored even when exposed to wind and rain for a long time outdoors. Therefore, this colored cement-based molded product can be suitably used as an exterior building material such as a roof tile.

(実施例1〜4)
下記表1に示す原料を用い、まずビニルモノマー、逆乳化剤、重合開始剤、水及びカーボンブラックを配合し、混合攪拌することによりW/O型エマルジョン組成物を調製した。
(Examples 1-4)
First, a vinyl monomer, a reverse emulsifier, a polymerization initiator, water, and carbon black were blended using the raw materials shown in Table 1 below, and a W / O emulsion composition was prepared by mixing and stirring.

次に、このW/O型エマルジョン組成物と、セメント、骨材及び補強繊維とを混合することで、カーボンブラックを含有するセメント含有W/O型エマルジョン組成物からなる着色セメント系成形材料を得た。   Next, a colored cement-based molding material comprising a cement-containing W / O emulsion composition containing carbon black is obtained by mixing the W / O emulsion composition with cement, aggregate, and reinforcing fibers. It was.

この着色セメント系成形材料をプレス成形にてシート状に成形し、80℃で24時間蒸気養生して養生硬化させると共にビニルモノマーを重合させて、着色セメント系成形品を得た。   This colored cement-based molding material was molded into a sheet by press molding, and cured by steam curing at 80 ° C. for 24 hours, and a vinyl monomer was polymerized to obtain a colored cement-based molded product.

(比較例1)
実施例1〜4と同様の手法により、カーボンブラックを含有しないセメント系成形材料を得た。
(Comparative Example 1)
A cement-based molding material not containing carbon black was obtained by the same method as in Examples 1 to 4.

このセメント系成形材料をプレス成形にてシート状に成形し、80℃で24時間蒸気養生して養生硬化させると共にビニルモノマーを重合させて、セメント系成形品を得た。   This cement-based molding material was molded into a sheet by press molding, and was cured by steam curing at 80 ° C. for 24 hours, and a vinyl monomer was polymerized to obtain a cement-based molded product.

(比較例2)
下記表1に示す原料を一度に全て配合し、攪拌混合することで、カーボンブラックを含有する着色セメント系成形材料を得た。
(Comparative Example 2)
The raw materials shown in Table 1 below were all blended at one time and mixed by stirring to obtain a colored cement-based molding material containing carbon black.

この着色セメント系成形材料を脱水プレス成形してシート状に成形し、80℃で24時間蒸気養生して養生硬化させて、着色セメント系成形品を得た。   This colored cement-based molding material was subjected to dehydration press molding, formed into a sheet, and cured at 80 ° C. for 24 hours by steam curing to obtain a colored cement-based molded product.

(曲げ強度試験)
寸法を100mm×200mm×10mmに形成した上記の各着色セメント系成形品及びセメント系成形品について、スパンを150mmとして三点曲げ試験を行い、オートグラフにて各成形品が破壊されるまでの最大圧力を測定した。
(Bending strength test)
The above-mentioned colored cement-based molded products and cement-based molded products having dimensions of 100 mm × 200 mm × 10 mm were subjected to a three-point bending test with a span of 150 mm, and the maximum until each molded product was destroyed by autograph The pressure was measured.

(屋外曝露試験)
上記の各着色セメント系成形品を屋外に曝露し、3ヶ月後及び1年後における褪色の程度を観察した。そして、褪色が生じていないものを「○」、褪色の発生が認められたものを「×」として評価した。尚、着色がなされていない比較例1のセメント系成形品については評価を行っていない。
(Outdoor exposure test)
Each colored cement-based molded article was exposed outdoors, and the degree of fading after 3 months and 1 year was observed. Then, the case where no fading occurred was evaluated as “◯”, and the case where fading occurred was evaluated as “×”. Note that the cement-based molded product of Comparative Example 1 that was not colored was not evaluated.

以上の結果を表1に示す。   The results are shown in Table 1.

Figure 0004589694
Figure 0004589694

表1に示すように、W/O型エマルジョンを形成していない着色セメント系成形材料にて得られた比較例2の着色セメント系成形材料では3ヶ月の曝露でもカーボンブラックの流出により褪色が生じたが、実施例1〜4では1年間曝露しても褪色は生じなかった。   As shown in Table 1, in the colored cement-based molding material of Comparative Example 2 obtained with the colored cement-based molding material not forming the W / O type emulsion, a fading occurs due to the outflow of carbon black even after exposure for 3 months. However, in Examples 1-4, no fading occurred even after exposure for one year.

また、特に実施例1及び実施例4では、カーボンブラックを含有させていない比較例1のセメント系成形品と同等以上の曲げ強度を有するものとなり、カーボンブラックを含有させたことにより強度低下が認められなかった。   In particular, Example 1 and Example 4 had a bending strength equal to or higher than that of the cement-based molded article of Comparative Example 1 that did not contain carbon black, and a decrease in strength was observed due to the inclusion of carbon black. I couldn't.

Claims (3)

ビニルモノマー、水、逆乳化剤及びカーボンブラックを混合攪拌してカーボンブラックがビニルモノマーに取り込まれたW/O型エマルジョン組成物を調製した後、このW/O型エマルジョン組成物をセメントと共に混合することを特徴とするセメント含有W/O型エマルジョン組成物からなる着色セメント系成形材料の製造方法。 Mixing and stirring vinyl monomer, water, reverse emulsifier and carbon black to prepare a W / O emulsion composition in which carbon black is incorporated into the vinyl monomer, and then mixing the W / O emulsion composition with cement. A method for producing a colored cement-based molding material comprising a cement-containing W / O emulsion composition characterized by the above. カーボンブラックの含有量、セメント含有W/O型エマルジョン組成物中の固形分190質量部に対して0.5〜1.0質量部の範囲とすることを特徴とする請求項1に記載の着色セメント系成形材料の製造方法 The content of carbon black, according to claim 1, characterized in that the range of 0.5 to 1.0 parts by mass relative to the solid content 190 parts by mass of the cement-containing W / O type emulsion composition A method for producing a colored cement-based molding material. 請求項1又は2に記載の製造方法により製造された着色セメント系成形材料を成形し、養生硬化すると共にビニルモノマーを重合させることを特徴とする着色セメント系成形品の製造方法Molding a colored cementitious molding material produced by the method according to claim 1 or 2, the manufacturing method of coloring a cementitious shaped article, wherein the benzalkonium by polymerizing a vinyl monomer as well as aging hardening.
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JPH07149556A (en) * 1993-12-01 1995-06-13 Okura Ind Co Ltd Production of fiber-reinforced extrusion molded cement plate and use for prepared extrusion molded cement plate
JPH0826807A (en) * 1994-07-07 1996-01-30 Okura Ind Co Ltd Manufacture of cement-formed article
JPH09255450A (en) * 1996-03-22 1997-09-30 Okura Ind Co Ltd Production of inorganic molding product
JP2000026141A (en) * 1999-12-22 2000-01-25 Tokai Carbon Co Ltd Carbon black for coloring cement and method for coloring cement molded article
JP2000226243A (en) * 1999-02-08 2000-08-15 Tokai Carbon Co Ltd Colored cement molded article

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06297448A (en) * 1993-04-16 1994-10-25 Kikusui Kagaku Kogyo Kk Cement product excellent in kneading property
JPH07149556A (en) * 1993-12-01 1995-06-13 Okura Ind Co Ltd Production of fiber-reinforced extrusion molded cement plate and use for prepared extrusion molded cement plate
JPH0826807A (en) * 1994-07-07 1996-01-30 Okura Ind Co Ltd Manufacture of cement-formed article
JPH09255450A (en) * 1996-03-22 1997-09-30 Okura Ind Co Ltd Production of inorganic molding product
JP2000226243A (en) * 1999-02-08 2000-08-15 Tokai Carbon Co Ltd Colored cement molded article
JP2000026141A (en) * 1999-12-22 2000-01-25 Tokai Carbon Co Ltd Carbon black for coloring cement and method for coloring cement molded article

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