JP2017100928A - Hydraulic powdery composition and cured product thereof, and method for forming cured product - Google Patents
Hydraulic powdery composition and cured product thereof, and method for forming cured product Download PDFInfo
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- 239000000203 mixture Substances 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title abstract 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 85
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 52
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims abstract description 30
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims abstract description 30
- 235000012241 calcium silicate Nutrition 0.000 claims abstract description 25
- 229910052918 calcium silicate Inorganic materials 0.000 claims abstract description 25
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 claims abstract description 25
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910001629 magnesium chloride Inorganic materials 0.000 claims abstract description 15
- 229910052943 magnesium sulfate Inorganic materials 0.000 claims abstract description 15
- 235000019341 magnesium sulphate Nutrition 0.000 claims abstract description 15
- 239000002994 raw material Substances 0.000 claims abstract description 15
- 239000010456 wollastonite Substances 0.000 claims abstract description 13
- 229910052882 wollastonite Inorganic materials 0.000 claims abstract description 13
- 239000000843 powder Substances 0.000 claims description 42
- 239000011230 binding agent Substances 0.000 claims description 37
- 239000000463 material Substances 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000001354 calcination Methods 0.000 abstract 1
- 239000000378 calcium silicate Substances 0.000 abstract 1
- 239000002932 luster Substances 0.000 abstract 1
- 238000005452 bending Methods 0.000 description 7
- 239000007787 solid Substances 0.000 description 7
- 239000002023 wood Substances 0.000 description 7
- 229920002522 Wood fibre Polymers 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 239000004575 stone Substances 0.000 description 5
- 239000002025 wood fiber Substances 0.000 description 5
- 239000000654 additive Substances 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 4
- 239000008187 granular material Substances 0.000 description 4
- 239000000123 paper Substances 0.000 description 4
- 239000010802 sludge Substances 0.000 description 4
- 239000004566 building material Substances 0.000 description 3
- 229910052573 porcelain Inorganic materials 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 229930014626 natural product Natural products 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229910004762 CaSiO Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910052910 alkali metal silicate Inorganic materials 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- FYYHWMGAXLPEAU-OUBTZVSYSA-N magnesium-25 atom Chemical group [25Mg] FYYHWMGAXLPEAU-OUBTZVSYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000010451 perlite Substances 0.000 description 1
- 235000019362 perlite Nutrition 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- BPILDHPJSYVNAF-UHFFFAOYSA-M sodium;diiodomethanesulfonate Chemical compound [Na+].[O-]S(=O)(=O)C(I)I BPILDHPJSYVNAF-UHFFFAOYSA-M 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
本発明は、製造に焼成工程を必要とせず、軽量で意匠性に優れた硬化物を与えることができる水硬化型粉状組成物及びその硬化物に関する。 The present invention relates to a water-curable powder composition and a cured product thereof that do not require a baking step for production and can provide a cured product that is lightweight and excellent in design.
建物の内外壁面等にタイル壁面を形成するタイルパネル、あるいは住宅などの内壁面の仕上げなどに使用される塗り壁材などの建物の壁や床に使用される建築材料には、遮水性、機械的強度、耐候性、下地面への貼付性等が求められる。 For building materials used for building walls and floors, such as tile panels that form tile walls on the inside and outside walls of buildings, or painted walls used for finishing interior walls of houses, etc. Strength, weather resistance, adhesiveness to the ground surface, etc. are required.
タイルパネルとしては、従来からセラミック系の材料が用いられているが、セラミックは重量が大きく、貼付される壁面に対して負担が大きく、また、施工に多大な労力と時間を要するという問題がある。
そのため、例えば、特許文献１には、ＳｉＯ2−Ａｌ2Ｏ3系粉体、アルカリ金属珪酸塩水溶液を主成分とする無機質硬化性組成物が硬化してなる基材に所定パターンでタイルの裏面側が埋設されているタイルパネルが開示されている。
Conventionally, ceramic materials have been used as tile panels. However, ceramics are heavy and have a large burden on the wall to which they are attached, and there is a problem that construction requires a lot of labor and time. .
Therefore, for example, Patent Document 1 discloses that a back surface of a tile is formed in a predetermined pattern on a base material formed by curing an inorganic curable composition mainly composed of an SiO 2 —Al 2 O 3 powder and an alkali metal silicate aqueous solution. A tile panel with a buried side is disclosed.
また、タイルパネルには、上述の遮水性、機械的強度、耐候性、下地面への貼付性等に加え、色彩等の表面意匠性が求められる。
しかしながら、通常のセラミック系の材料で形成されたタイルパネルは、あるいは無機多孔質材による主材と、無機質イオン結合促進剤と、水硬性バインダーとを含有することを特徴とする塗壁材は、意匠性に乏しいため、意匠性を持たせるには表面修飾等が必要となることが多い。例えば、床面タイルの場合、表面光沢性が求められることが多いが、セラミック系タイルパネルに表面光沢性を持たせるためには表面に釉薬等を塗布し、１０００℃以上の高温で焼成している。
Further, the tile panel is required to have surface design properties such as color in addition to the above-described water-blocking property, mechanical strength, weather resistance, adhesiveness to the ground surface, and the like.
However, a tile panel formed of a normal ceramic material, or a coated wall material characterized by containing a main material made of an inorganic porous material, an inorganic ionic bond promoter, and a hydraulic binder, Since the design is poor, surface modification or the like is often required to provide the design. For example, in the case of floor tiles, surface gloss is often required, but in order to impart surface gloss to ceramic tile panels, glaze etc. is applied to the surface and fired at a high temperature of 1000 ° C. or higher. Yes.
また、特許文献２には、平均粒径０．１〜３０ｍｍの珪質頁岩粉粒物が、前記珪質頁岩粉粒物１００重量部に対して３０〜５０重量部の水、および、前記珪質頁岩粉粒物１００重量部に対して０．５〜１．０重量部の無機塩調整剤の存在下に、前記珪質頁岩粉粒物１００重量部に対して５〜２０重量部の水硬性バインダーにより結合一体化されてなる塗り壁が開示されている。
しかしながら、このような、水硬性バインダーを含有した塗壁材を用いた塗り壁は、軽量であるものの、強度が不足し、その両立を困難とする課題を有していた。
Further, Patent Document 2 discloses that siliceous shale granule having an average particle size of 0.1 to 30 mm is 30 to 50 parts by weight of water with respect to 100 parts by weight of siliceous shale granule and the silica 5 to 20 parts by weight of water to 100 parts by weight of the siliceous shale granule in the presence of 0.5 to 1.0 parts by weight of an inorganic salt modifier for 100 parts by weight of the shale granule. A painted wall is disclosed which is bonded and integrated with a hard binder.
However, although such a coated wall using a coated wall material containing a hydraulic binder is lightweight, it has a problem that strength is insufficient and it is difficult to achieve both.
一方、本発明者は特許文献３において、所定割合の酸化マグネシウム、硫酸マグネシウム及び塩化マグネシウムを含有するマグネシア系結合材とペーパースラッジ灰とを混合させ、これらを水硬化させてなる固形体を報告している。 On the other hand, the present inventor reported in Patent Document 3 a solid body obtained by mixing a magnesia-based binder containing a predetermined proportion of magnesium oxide, magnesium sulfate and magnesium chloride and paper sludge ash, and water curing these. ing.
特許文献３で開示されたマグネシア系結合材及びペーパースラッジ灰を主成分とする固形体は、幅広い圧縮強度を備えることができるため、建築材料として有望である。しかしながら、マグネシア系結合材及びペーパースラッジ灰を主成分とする固形体は曲げ強度は高いものの、当該固形体をタイルパネル（特には硬度が求められる床用タイルパネル）に使用するには衝撃強度が不足するおそれがある。また、当該固形体は表面光沢性を有さないため、別途表面光沢性の塗料を塗布するなどの表面処理を行う必要がある。
しかしながら、マグネシア系結合材及びペーパースラッジ灰を主成分とする固形体は、圧縮強度が高いものの、たわみや靭性に対する抵抗力の指標となる曲げ強度が不足するおそれがある。
The solid body mainly composed of magnesia-based binder and paper sludge ash disclosed in Patent Document 3 is promising as a building material because it can have a wide range of compressive strength. However, although a solid body mainly composed of magnesia-based binder and paper sludge ash has a high bending strength, impact strength is insufficient to use the solid body for tile panels (particularly floor tile panels for which hardness is required). There may be a shortage. In addition, since the solid body does not have surface gloss, it is necessary to perform surface treatment such as separately applying a surface gloss paint.
However, although the solid body mainly composed of magnesia-based binder and paper sludge ash has a high compressive strength, there is a fear that the bending strength, which is an index of resistance to deflection and toughness, is insufficient.
かかる状況下、本発明の目的は、圧縮強度のみならず、曲げ強度などの機械的強度、下地面への貼付性(高強度の付着強度)等に加え、硬化物の形成に適した水硬化型粉状組成物、及び当該水硬化型粉状組成物の硬化物を提供することである。 Under such circumstances, the object of the present invention is not only compressive strength, but also mechanical strength such as bending strength, adhesiveness to the ground surface (high strength adhesion strength), etc., and water curing suitable for formation of a cured product. It is to provide a mold powder composition and a cured product of the water-curable powder composition.
本発明者は、上記課題を解決すべく鋭意研究を重ねた結果、マグネシア系結合材と針状メタケイ酸カルシウムを組み合わせた粉状組成物が加水により優れた曲げ強度や下地面への貼付性に優れることを見出し、本発明に至った。 As a result of intensive studies to solve the above problems, the present inventors have found that a powder composition combining a magnesia-based binder and acicular calcium metasilicate has excellent bending strength due to hydration and adhesiveness to a ground surface. As a result, the present invention was found.
すなわち、本発明は、以下の発明に係るものである。
＜１＞ マグネシア系結合材と、針状メタケイ酸カルシウムとを含有する水硬化型粉状組成物。
＜２＞ 前記マグネシア系結合材１００重量部に対する前記針状メタケイ酸カルシウムの重量割合が、５〜４５重量部である前記＜１＞に記載の水硬化型粉状組成物。
＜３＞ 前記針状メタケイ酸カルシウムが、ワラストナイトである前記＜１＞または＜２＞に記載の水硬化型粉状組成物。
＜４＞ 前記マグネシア系結合材が、酸化マグネシウムを主原料とし、さらに塩化マグネシウムと硫酸マグネシウムを含むマグネシア系結合材である前記＜１＞から＜３＞のいずれかに記載の水硬化型粉状組成物。
＜５＞ 前記＜１＞から＜４＞のいずれかに記載の水硬化型粉状組成物に加水して硬化させてなる硬化物。
That is, the present invention relates to the following inventions.
<1> A water-curable powder composition containing a magnesia-based binder and acicular calcium metasilicate.
<2> The water-curable powder composition according to <1>, wherein a weight ratio of the acicular calcium metasilicate to 100 parts by weight of the magnesia-based binder is 5 to 45 parts by weight.
<3> The water-curable powder composition according to <1> or <2>, wherein the acicular calcium metasilicate is wollastonite.
<4> The water-curable powder according to any one of <1> to <3>, wherein the magnesia-based binder is a magnesia-based binder including magnesium oxide as a main raw material and further containing magnesium chloride and magnesium sulfate. Composition.
<5> A cured product obtained by adding water to the water-curable powder composition according to any one of <1> to <4> and curing it.
本発明によれば、機械的強度、下地面への貼付性等に加え、表面光沢性を有する硬化物の形成に適した水硬化型粉状組成物が提供される。当該水硬化型粉状組成物に加水して得られる硬化物を有する建築材料は、優れた機械的強度を有する。 ADVANTAGE OF THE INVENTION According to this invention, in addition to mechanical strength, the sticking property to a base surface, etc., the water curing type powdery composition suitable for formation of the hardened | cured material which has surface glossiness is provided. A building material having a cured product obtained by adding water to the water-curable powdery composition has excellent mechanical strength.
以下、本発明について例示物等を示して詳細に説明するが、本発明は以下の例示物等に限定されるものではなく、本発明の要旨を逸脱しない範囲において任意に変更して実施できる。 Hereinafter, the present invention will be described in detail with reference to examples and the like, but the present invention is not limited to the following examples and the like, and can be arbitrarily modified and implemented without departing from the gist of the present invention.
＜１．水硬化型粉状組成物＞
本発明の水硬化型粉状組成物は、マグネシア系結合材と、針状メタケイ酸カルシウムとを必須成分として含有する。
<1. Water-curing powder composition>
The water-curable powder composition of the present invention contains a magnesia-based binder and acicular calcium metasilicate as essential components.
本発明の水硬化型粉状組成物は、原料に水硬化するマグネシア系結合材を含むため、加水して水と混合することにより、加熱しなくとも常温において容易に硬化する。本発明の水硬化型粉状組成物を水硬化して得られる硬化物（以下、「本発明の硬化物」と称す場合がある。）は、優れた曲げ強度・圧縮強度といった機械的強度に優れる。 Since the water-curable powder composition of the present invention contains a magnesia-based binder that is water-cured in the raw material, it is easily cured at room temperature without heating by adding water and mixing with water. A cured product obtained by water curing the water-curable powder composition of the present invention (hereinafter sometimes referred to as “cured product of the present invention”) has excellent mechanical strength such as bending strength and compressive strength. Excellent.
以下、本発明の水硬化型粉状組成物が含有する各成分について詳細に説明する。 Hereinafter, each component contained in the water-curable powder composition of the present invention will be described in detail.
（マグネシア系結合材）
本発明の水硬化型粉状組成物において、マグネシア系結合材は、加水して混合することによって硬化し、水硬化型粉状組成物を固化させる作用を有する。
マグネシア系結合材として具体的には、酸化マグネシウム、塩化マグネシウム及び硫酸マグネシウム、並びにこれらの混合物が挙げられる。
特に、機械的強度に優れた硬化物が得られる点で、酸化マグネシウムを主原料とし、それに塩化マグネシウムと硫酸マグネシウムを含むマグネシア系結合材が好ましい。ここで、「酸化マグネシウムを主原料とする」とは、酸化マグネシウム、塩化マグネシウムおよび硫酸マグネシウムの３つの成分のうち、酸化マグネシウムの占める重量割合が最も高い場合であることを意味する。
(Magnesia binder)
In the water-curable powder composition of the present invention, the magnesia-based binder has an action of hardening by adding water and mixing to solidify the water-curable powder composition.
Specific examples of the magnesia-based binder include magnesium oxide, magnesium chloride and magnesium sulfate, and mixtures thereof.
In particular, a magnesia-based binder containing magnesium oxide as a main raw material and containing magnesium chloride and magnesium sulfate is preferable in that a cured product having excellent mechanical strength can be obtained. Here, “magnesium oxide is the main raw material” means that the weight proportion of magnesium oxide is the highest among the three components of magnesium oxide, magnesium chloride and magnesium sulfate.
マグネシア系結合材の原料として酸化マグネシウム及び塩化マグネシウムのみを用いた場合、当該原料に水を混合して水硬させてなる硬化物は、吸湿性が高いため反り及び膨張が生じ易いのに加え、耐水性及び耐久性が著しく低い場合がある。
一方、結合材の原料として酸化マグネシウム及び硫酸マグネシウムのみを用いた場合、当該原料に水を混合して水硬させてなる固形体に膨張又はひび割れが発生するおそれがある。
When only magnesium oxide and magnesium chloride are used as raw materials for the magnesia-based binder, a cured product obtained by mixing water with the raw material and hydraulically hardening is likely to be warped and expanded due to its high hygroscopicity, Water resistance and durability may be extremely low.
On the other hand, when only magnesium oxide and magnesium sulfate are used as the raw material of the binder, there is a possibility that expansion or cracking may occur in a solid body obtained by mixing water with the raw material and hardening it.
これに対して、結合材の原料として酸化マグネシウム、硫酸マグネシウム及び塩化マグネシウムを用いた場合は、３つの原料を所定の割合で混合することによって、固形体に前述した如き反り、膨張及びひび割れが生じることなく、また、「酸化マグネシウム及び塩化マグネシウムのみ」あるいは「酸化マグネシウム及び硫酸マグネシウムのみ」の場合よりも耐水性及び耐久性が著しく改善される。 On the other hand, when magnesium oxide, magnesium sulfate and magnesium chloride are used as the raw material for the binder, the solid material is warped, expanded and cracked as described above by mixing the three raw materials at a predetermined ratio. In addition, the water resistance and durability are remarkably improved as compared with the cases of “magnesium oxide and magnesium chloride alone” or “magnesium oxide and magnesium sulfate alone”.
ここで、酸化マグネシウム、硫酸マグネシウム及び塩化マグネシウムの３原料を混合する割合はマグネシア系結合材を構成する原料の総重量に対して酸化マグネシウムが５割以下であり、硫酸マグネシウムが２．５割以上４割未満であり、塩化マグネシウムが１割を超え２．５割以下であることが好ましい。より好ましい混合割合は、マグネシア系の結合材を構成する原料の総質量に対して酸化マグネシウムが５割であり、硫酸マグネシウムが２．５割以上４割未満であり、塩化マグネシウムが１割を超え２．５割以下である。 Here, the ratio of mixing three raw materials of magnesium oxide, magnesium sulfate and magnesium chloride is 50% or less of magnesium oxide and 2.5% or more of magnesium sulfate with respect to the total weight of the raw materials constituting the magnesia-based binder. It is less than 40%, and magnesium chloride is preferably more than 10% and 2.5% or less. More preferable mixing ratio is 50% of magnesium oxide, 2.5 to 40% of magnesium sulfate, and more than 10% of magnesium chloride with respect to the total mass of raw materials constituting the magnesia-based binder. 2.5% or less.
マグネシア系結合材の粒径は、針状メタケイ酸カルシウム（及び任意成分）と均一に混合できる範囲で決定され、通常、５〜６０μｍである。 The particle size of the magnesia-based binder is determined within a range where it can be uniformly mixed with acicular calcium metasilicate (and optional components), and is usually 5 to 60 μm.
（針状メタケイ酸カルシウム）
針状メタケイ酸カルシウムは、いわゆる針状無機フィラーであり、本発明の硬化物に優れた機械的強度（曲げ強度、衝撃強度等）を与えることができる。また、針状メタケイ酸カルシウムは、化学的に安定が高いため、本発明の硬化物に耐久性を付与することができる。
(Acicular calcium metasilicate)
Acicular calcium metasilicate is a so-called acicular inorganic filler and can give excellent mechanical strength (bending strength, impact strength, etc.) to the cured product of the present invention. Moreover, since acicular calcium metasilicate is chemically stable, durability can be provided to the hardened | cured material of this invention.
針状メタケイ酸カルシウムは、化学式ＣａＳｉＯ3を主成分とする、白色の針状の結晶形状を有し、アスペクト比（直径に対する長さの比）が１０倍以上である物質である。針状メタケイ酸カルシウムは、数十〜数百μｍ程度の範囲で長さ分布があるが、本発明の水硬化型粉状組成物として適した長さ分布のものを使用すればよい。
なお、本発明で使用される針状メタケイ酸カルシウムには、針状形状に類似する細管状、短冊状の結晶形状も含まれるものとする。強度のバランスに優れた硬化物が供給される点で、アスペクト比（直径に対する長さの比）は、１５以上が好ましい。
Acicular calcium metasilicate is a substance having a white needle-like crystal shape, the main component of which is the chemical formula CaSiO 3 , and an aspect ratio (ratio of length to diameter) of 10 times or more. Acicular calcium metasilicate has a length distribution in the range of about several tens to several hundreds of μm, and a length distribution suitable for the water-curable powdery composition of the present invention may be used.
Note that the acicular calcium metasilicate used in the present invention includes a tubular and strip-like crystal shape similar to the acicular shape. The aspect ratio (ratio of length to diameter) is preferably 15 or more in that a cured product having an excellent balance of strength is supplied.
針状メタケイ酸カルシウムは、天然物であっても、人工物であってもよい。特に天然物であるワラストナイト（Wollastonite）が好適である。ワラストナイトは、硬度４．５〜５の結晶性鉱物であり、粉砕すると白色の針状粒子となる。当該針状粒子を針状メタケイ酸カルシウムとして本発明の水硬化型粉状組成物に使用すると、曲げ強度が顕著に増大する。 Acicular calcium metasilicate may be a natural product or an artificial product. In particular, the natural product Wollastonite is suitable. Wollastonite is a crystalline mineral having a hardness of 4.5 to 5, and becomes white needle-like particles when pulverized. When the acicular particles are used as acicular calcium metasilicate in the water-curable powder composition of the present invention, the bending strength is remarkably increased.
針状メタケイ酸カルシウムの長さはレーザー解析散乱式測定、アスペクト比は電子顕微鏡（ＳＥＭ）で観察した任意の粒子１０個の平均値として求めることができる。 The length of acicular calcium metasilicate can be determined by laser analysis scattering measurement, and the aspect ratio can be obtained as an average value of 10 arbitrary particles observed with an electron microscope (SEM).
本発明の水硬化型粉状組成物において、マグネシア系結合材１００重量部に対する針状メタケイ酸カルシウムの重量割合が、５〜４５重量部であることが好ましく、より好ましくは、２０〜４０重量部である。
この範囲であれば、得られる硬化物は結合性が高く、高硬度で緻密であり、ひび割れなどが生じづらい水硬化型粉状組成物を与えることができる。この範囲において、その使用時の状況に応じてそれぞれの成分含量を適宜設定し使用すればよい。
In the water-curable powder composition of the present invention, the weight ratio of acicular calcium metasilicate to 100 parts by weight of magnesia-based binder is preferably 5 to 45 parts by weight, more preferably 20 to 40 parts by weight. It is.
If it is this range, the hardened | cured material obtained will have a high bondability, and it can give the water hardening type powdery composition which is high hardness and dense, and is hard to produce a crack. Within this range, the content of each component may be appropriately set and used according to the situation at the time of use.
（その他の成分）
本発明の水硬化型粉状組成物は、マグネシア系結合材と、針状メタケイ酸カルシウムとを含有するが、本発明の効果を損なわない範囲で他の成分を含んでいてよい。他の成分して、例えば、ドノマイト、酸性白土、水酸化アルミニウム、マイカあるいはパーライトなどが挙げられる。これらの他の成分の含有量は通常５重量％以下である。また、硬化物の意匠性を向上させるために、木質繊維や木質チップなどの木質断裁材、陶石等の添加物を添加してもよい。これらの添加物の添加量は任意であり、目的に応じて適時設定される。
(Other ingredients)
The water-curable powder composition of the present invention contains a magnesia-based binder and acicular calcium metasilicate, but may contain other components as long as the effects of the present invention are not impaired. Examples of other components include donomite, acidic clay, aluminum hydroxide, mica, and perlite. The content of these other components is usually 5% by weight or less. Moreover, in order to improve the designability of hardened | cured material, you may add additives, such as wood cutting materials, such as a wood fiber and a wood chip, and a ceramic stone. The addition amount of these additives is arbitrary, and is set appropriately according to the purpose.
本発明の水硬化型粉状組成物は、通常の粉体混合における従来公知の手段によって製造することができる。混合順序も任意であり、水硬化型粉状組成物の構成成分（マグネシア系結合材、針状メタケイ酸カルシウム、任意成分）のうち、何れか２成分又は３成分以上を予め配合し、その後に残りの成分を混合してもよいし、一度に全部を混合してもよい。 The water-curable powder composition of the present invention can be produced by a conventionally known means in ordinary powder mixing. Mixing order is also arbitrary, among the components (magnesia binder, acicular calcium metasilicate, optional components) of the water-curable powder composition, any two components or three or more components are blended in advance, and then The remaining components may be mixed or all at once.
＜２．硬化物＞
本発明の硬化物は、上述の水硬化型粉状組成物と、水とを混合し硬化してなることを特徴とする。本発明の硬化物は、機械的強度や付着特性にも優れるため、機械的強度と表面装飾性を有する用途（例えば、建物の内外壁や床面）に好適である。
<2. Cured product>
The cured product of the present invention is obtained by mixing and curing the above-mentioned water-curable powder composition and water. Since the cured product of the present invention is excellent in mechanical strength and adhesion properties, it is suitable for applications having mechanical strength and surface decoration (for example, inner and outer walls and floors of buildings).
本発明の硬化物は、所定の量の水硬化型粉状組成物に、適宜量の水を入れて十分に撹拌混練し、必要に応じて成形用の型に入れたのち混練物の水硬化・養成を行うことで得ることができる。 In the cured product of the present invention, a predetermined amount of water-curable powdery composition is charged with an appropriate amount of water and sufficiently stirred and kneaded.・ It can be obtained by training.
本発明の硬化物は、針状メタケイ酸カルシウムに由来する表面光沢性を有する。また、木質繊維、木質チップなどの木質断裁材、陶石等の添加物を含む場合には、それぞれの添加物に由来する意匠性を有する。 The cured product of the present invention has surface gloss derived from acicular calcium metasilicate. Moreover, when it contains additives, such as wood cutting materials, such as a wood fiber and a wood chip | tip, and a ceramic stone, it has the designability derived from each additive.
本発明の水硬化型粉状組成物は、加水し水と混合して硬化するまで、ある程度の時間があるため、適用状況に応じて適当な形状の硬化物を得ることができる。
また、加水し水と混合して硬化する前の水硬化型粉状組成物を、既存の建設物に塗工して硬化させ、既存の内外壁や床面に適用ができる。
Since the water-curable powder composition of the present invention has a certain amount of time until it is mixed with water and cured, a cured product having an appropriate shape can be obtained according to the application situation.
Moreover, the water-curable powder composition before being mixed with water and cured can be applied to an existing construction and cured to be applied to existing inner and outer walls and floors.
以下に実施例を挙げて本発明をより具体的に説明するが、本発明はこれらに限定されるものではない。 Hereinafter, the present invention will be described more specifically with reference to examples. However, the present invention is not limited to these examples.
＜水硬化性粉状組成物の製造＞
（実施例１）
酸化マグネシウム５０重量部、硫酸マグネシウム２５重量部、塩化マグネシウム２５重量部を、均一になるまで混合し、マグネシア系結合材を得た。得られたマグネシア系結合材１００重量部に対して、針状メタケイ酸カルシウムとしてワラストナイト（NYCO Minerala社、長さ：６００μｍ、アスペクト比：１５）３０重量部を均一になるまで混合することにより、実施例１の水硬化性粉状組成物を得た。
<Production of water curable powder composition>
Example 1
Magnesium-based binder was obtained by mixing 50 parts by weight of magnesium oxide, 25 parts by weight of magnesium sulfate and 25 parts by weight of magnesium chloride until uniform. By mixing 30 parts by weight of wollastonite (NYCO Minerala, length: 600 μm, aspect ratio: 15) as acicular calcium metasilicate with 100 parts by weight of the obtained magnesia-based binder until uniform. The water-curable powder composition of Example 1 was obtained.
実施例１の水硬化性粉状組成物１０００ｇに、水３００ｇを加えて、均一になるまで混合し、シート状に成形したのちに、室温で４８時間養生し、実施例１の硬化物を得た。
得られた硬化物は、成形性を保ち、高い機械的強度を有し、かつ、ワラストナイトに由来する表面光沢性を有していた。
300 g of water was added to 1000 g of the water curable powder composition of Example 1, mixed until uniform, formed into a sheet, and then cured at room temperature for 48 hours to obtain the cured product of Example 1 It was.
The obtained cured product maintained moldability, had high mechanical strength, and had surface gloss derived from wollastonite.
（実施例２）
実施例１の水硬化性粉状組成物において、マグネシア系結合材１００重量部に対して、ワラストナイト２０重量部と共に、木質繊維５重量部、木質チップを５重量部添加した以外は、実施例１と同様にして、実施例２の水硬化性粉状組成物を得た。
(Example 2)
In the water-curable powder composition of Example 1, with the exception of adding 5 parts by weight of wood fiber and 5 parts by weight of wood chips together with 20 parts by weight of wollastonite with respect to 100 parts by weight of magnesia-based binder. In the same manner as in Example 1, the water-curable powder composition of Example 2 was obtained.
実施例２の水硬化性粉状組成物１０００ｇに、水３５０ｇを加えて、均一になるまで混合し、シート状に成形したのちに、室温で４８時間養生し、実施例２の硬化物を得た。
得られた硬化物は、成形性を保ち、高い機械的強度を有し、かつ、ワラストナイトに由来する表面光沢性及び木質繊維、木質チップに由来する意匠性を有していた。
350 g of water was added to 1000 g of the water curable powder composition of Example 2, mixed until uniform, formed into a sheet, and then cured at room temperature for 48 hours to obtain the cured product of Example 2 It was.
The obtained cured product maintained moldability, had high mechanical strength, and had surface gloss derived from wollastonite and design derived from wood fibers and wood chips.
（実施例３）
マグネシア系結合材として、酸化マグネシウム４０重量部、硫酸マグネシウム３０重量部を使用し、塩化マグネシウム３０重量部を使用し、均一になるまで混合し、マグネシア系結合材を得た。得られたマグネシア系結合材１００重量部に対して、ワラストナイト５重量部と共に、破砕した陶石１５重量部添加した以外は、実施例１と同様にして、実施例３の水硬化性粉状組成物を得た。
(Example 3)
As the magnesia binder, 40 parts by weight of magnesium oxide and 30 parts by weight of magnesium sulfate were used, and 30 parts by weight of magnesium chloride was used and mixed until uniform to obtain a magnesia binder. The water-curable powder of Example 3 was the same as Example 1 except that 15 parts by weight of crushed porcelain stone was added together with 5 parts by weight of wollastonite to 100 parts by weight of the obtained magnesia-based binder. A composition was obtained.
実施例３の水硬化性粉状組成物１０００ｇに、水２５０ｇを加えて、均一になるまで混合し、シート状に成形したのちに、室温で４８時間養生し、実施例３の硬化物を得た。
得られた硬化物は、成形性を保ち、高い機械的強度を有し、かつ、ワラストナイトに由来する表面光沢性及び陶石に由来する意匠性を有していた。
250 g of water was added to 1000 g of the water curable powder composition of Example 3, mixed until uniform, formed into a sheet, and then cured at room temperature for 48 hours to obtain the cured product of Example 3 It was.
The obtained cured product maintained moldability, had high mechanical strength, and had surface gloss derived from wollastonite and design derived from porcelain stone.
＜塗壁の製造＞
実施例１の水硬化性粉状組成物に適等量の水を添加し、硬化する前に建物外壁に塗工し、１日間養生した。得られた塗壁は十分に硬化しており、表面は、ワラストナイトに由来する表面光沢性を有していた。
実施例２，３の水硬化性粉状組成物についても、同様に手順で塗壁を形成したところ、面は、ワラストナイトに由来する表面光沢性と、木質繊維、木質チップ又は陶石に由来する意匠性を有していた。
<Manufacture of painted walls>
An appropriate amount of water was added to the water-curable powder composition of Example 1, and applied to the outer wall of the building before curing, followed by curing for 1 day. The obtained coated wall was sufficiently cured, and the surface had surface gloss derived from wollastonite.
Also for the water-curable powder compositions of Examples 2 and 3, when a coating wall was formed in the same manner, the surface was made of surface gloss derived from wollastonite and wood fibers, wood chips or porcelain stones. It had design properties derived from it.
本発明の水硬化型粉状組成物は、加水するだけで容易に硬化させることでき、得られる硬化物は、高い機械的強度と耐久性を有し、軽量で意匠性に優れるため、塗壁やタイル等の用途に適する。 The water-curable powder composition of the present invention can be easily cured by simply adding water, and the resulting cured product has high mechanical strength and durability, is lightweight, and has excellent design properties. Suitable for applications such as tiles and tiles.
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| R250 | Receipt of annual fees |
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