JPH01249676A - Colored shirasu expanded body - Google Patents
Colored shirasu expanded bodyInfo
- Publication number
- JPH01249676A JPH01249676A JP7860288A JP7860288A JPH01249676A JP H01249676 A JPH01249676 A JP H01249676A JP 7860288 A JP7860288 A JP 7860288A JP 7860288 A JP7860288 A JP 7860288A JP H01249676 A JPH01249676 A JP H01249676A
- Authority
- JP
- Japan
- Prior art keywords
- shirasu
- pts
- color
- colored
- transition metal
- 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.)
- Pending
Links
- 229910000314 transition metal oxide Inorganic materials 0.000 claims abstract description 19
- 239000000203 mixture Substances 0.000 claims abstract description 15
- 230000004907 flux Effects 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- 239000006260 foam Substances 0.000 claims description 19
- 238000005187 foaming Methods 0.000 claims description 10
- 239000004088 foaming agent Substances 0.000 claims description 9
- 239000004604 Blowing Agent Substances 0.000 abstract description 15
- QPLDLSVMHZLSFG-UHFFFAOYSA-N CuO Inorganic materials [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 abstract description 9
- GNTDGMZSJNCJKK-UHFFFAOYSA-N divanadium pentaoxide Chemical compound O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 abstract description 8
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 abstract description 6
- 229910052808 lithium carbonate Inorganic materials 0.000 abstract description 6
- 239000002245 particle Substances 0.000 abstract description 6
- 229910052581 Si3N4 Inorganic materials 0.000 abstract description 5
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 abstract description 4
- 238000002156 mixing Methods 0.000 abstract description 4
- 230000001590 oxidative effect Effects 0.000 abstract description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract 1
- GNMQOUGYKPVJRR-UHFFFAOYSA-N nickel(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Ni+3].[Ni+3] GNMQOUGYKPVJRR-UHFFFAOYSA-N 0.000 abstract 1
- PZFKDUMHDHEBLD-UHFFFAOYSA-N oxo(oxonickeliooxy)nickel Chemical compound O=[Ni]O[Ni]=O PZFKDUMHDHEBLD-UHFFFAOYSA-N 0.000 abstract 1
- 239000005335 volcanic glass Substances 0.000 abstract 1
- 239000002344 surface layer Substances 0.000 description 14
- 235000019646 color tone Nutrition 0.000 description 8
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 7
- 229910010271 silicon carbide Inorganic materials 0.000 description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 230000008859 change Effects 0.000 description 6
- 238000010304 firing Methods 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 241000975357 Salangichthys microdon Species 0.000 description 5
- 230000005484 gravity Effects 0.000 description 5
- 239000005751 Copper oxide Substances 0.000 description 4
- 229910000431 copper oxide Inorganic materials 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000007800 oxidant agent Substances 0.000 description 4
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 238000004040 coloring Methods 0.000 description 2
- 230000001747 exhibiting effect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 229910052723 transition metal Inorganic materials 0.000 description 2
- 150000003624 transition metals Chemical class 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- -1 lithium carbonate Chemical compound 0.000 description 1
- GEYXPJBPASPPLI-UHFFFAOYSA-N manganese(III) oxide Inorganic materials O=[Mn]O[Mn]=O GEYXPJBPASPPLI-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000006864 oxidative decomposition reaction Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/02—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding chemical blowing agents
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、建材、保温カバー、鉢等に使用される着色さ
れたシラス発泡体に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a colored whitebait foam used for building materials, heat-insulating covers, pots, etc.
（従来の技術）
シラスを主材とし、これに炭化珪素や窒化珪素等の発泡
材、炭酸リチウム等の融剤を混合し、これを加熱溶融し
て発泡させ、シラス発泡体を得る技術は公知であるが、
これを所望の色に着色するには、通常陶磁器の着色技術
即ち施釉によって行われる。即ち、シラス発泡体の表面
に所望の色に発色する釉薬を掛け、焼成する方法である
。(Prior art) The technology of obtaining a shirasu foam by mixing shirasu as a main material, mixing a foaming material such as silicon carbide or silicon nitride, and a fluxing agent such as lithium carbonate, heating and melting the shirasu to foam it is well known. In Although,
Coloring this to the desired color is usually done by ceramic coloring techniques, ie glazing. That is, this is a method in which a glaze that develops a desired color is applied to the surface of the shirasu foam and then fired.
（発明が解決しようとする課題）
しかしながら、上記従来技術の場合、発泡体の製造時と
施釉時との２度に亙って焼成する必要があり、手数がか
かると共に、釉薬が掛けられる表層部と内部とが連続的
に色調の異なるものを得ることは不可能であり、又表層
部と内部とが不連続的に色調の異なるものは得られても
内部は融剤や発泡剤固有の色に着色され、所望の色に発
色させることは出来なかった。(Problems to be Solved by the Invention) However, in the case of the above-mentioned prior art, it is necessary to fire the foam twice, once when manufacturing the foam and once when applying the glaze, which is time-consuming and requires a lot of effort, and the surface layer to which the glaze is applied. It is impossible to obtain a product with a continuous difference in color tone between the surface layer and the inside, and even if it is possible to obtain a product with a discontinuous difference in color tone between the surface layer and the inside, the color inside is unique to the fluxing agent and blowing agent. It was not possible to develop the desired color.
（課題を解決するための手段）
本発明着色されたシラス発泡体は、前記従来技術の問題
点を解消する為になされたものであって、シラスに、融
剤と発泡剤と遷移金属の酸化物とを混合した組成物を、
加熱して発泡させることにより得られる着色されたシラ
ス発泡体をその要旨とするものである。(Means for Solving the Problems) The colored shirasu foam of the present invention has been made to solve the problems of the prior art, and includes shirasu, a fluxing agent, a blowing agent, and the oxidation of a transition metal. A composition mixed with
Its gist is a colored shirasu foam obtained by heating and foaming.
即ち、シラスに融剤と発泡剤とを加えて発泡させる際に
、還元によって本来の色とは異なった色に変色する遷移
金属の酸化物を添加し、焼成発泡の際に、発泡剤を酸化
させると共に、自らは還元し゛ζ特有の色を発色する理
を応用したものである。そして、表層部と内部の色の組
合せ、境界部に於ける色調の連続・不連続性は、発泡剤
の種類や発泡剤に対する遷移金属酸化物の添加量或いは
焼成温度等により種々様々なものが得られるが、−船釣
には表層部は遷移金属酸化物本来の色を呈し、内部に行
くに従って還元された特有の色に発色する傾向にある。That is, when foaming by adding a flux and a foaming agent to whitebait, a transition metal oxide that changes color to a color different from the original color due to reduction is added, and during firing and foaming, the foaming agent is oxidized. At the same time, it reduces itself and produces the unique color of ζ. The color combination of the surface layer and the interior, and the continuity/discontinuity of the color tone at the boundary, vary depending on the type of blowing agent, the amount of transition metal oxide added to the blowing agent, the firing temperature, etc. However, when fishing on a boat, the surface layer exhibits the original color of the transition metal oxide, and as it goes deeper into the interior, it tends to develop into a unique reduced color.
本発明で使用する遷移金属の酸化物は、発泡剤の酸化剤
としての機能も果たすものである。The transition metal oxide used in the present invention also functions as an oxidizing agent for the blowing agent.
即ち、炭化珪素、窒化珪素、窒化アルミニウム等の発泡
剤は、空気中の酸素及びシラス中の酸素と結合して自ら
酸化され、Ｃｏ、 ＣＯ２、Ｎｏ等のガスを発生し、こ
れらのガスは軟化したシラスを膨張乃至発泡させるので
あるが、シラスの軟化によって空気中の酸素との接触を
断たれるので、発泡剤の酸化分解度は低下し、発泡が制
約される。この為に発泡剤の他に予め酸化剤即ち遷移金
属の酸化物を添加するのである。この酸化剤としては、
８５０°Ｃ以上の高温で分解して酸素を放出するものか
、或いはより低温でも炭化珪素、窒化珪素、窒化アルミ
ニウム等によって容易に酸素を奪われるものが採用され
るのであって、この条件に叶うものが高温で比較的不安
定な遷移金属の酸化物である。該酸化物としてば、Ｃｕ
Ｏ、Ｆｅ９ｇ４、Ｆｅ２０ａ 、、 Ｎ１ｚＯｉ 、Ｃ
Ｏ２０４、Ｃ０２（ｈ 、ＭｎＯ２、Ｍｎ２Ｏ３等が挙
げられ、これらを単独で或いは２種以上の混合物として
使用するが、中でもＣｕＯが最も酸化効果が犬である。In other words, foaming agents such as silicon carbide, silicon nitride, and aluminum nitride are oxidized by themselves by combining with oxygen in the air and oxygen in Shirasu, generating gases such as Co, CO2, and No, and these gases are softened. The whitebait is expanded or foamed, but as the whitebait softens, contact with oxygen in the air is cut off, so the degree of oxidative decomposition of the blowing agent decreases, and foaming is restricted. For this purpose, an oxidizing agent, that is, an oxide of a transition metal, is added in advance in addition to the blowing agent. This oxidizing agent is
These conditions are met by the use of materials that decompose and release oxygen at high temperatures of 850°C or higher, or materials that are easily deprived of oxygen by silicon carbide, silicon nitride, aluminum nitride, etc. even at lower temperatures. It is a transition metal oxide that is relatively unstable at high temperatures. As the oxide, Cu
O, Fe9g4, Fe20a,, N1zOi, C
Examples include O204, CO2(h2), MnO2, Mn2O3, etc., and these are used alone or as a mixture of two or more, but among them, CuO has the most oxidizing effect.
遷移金属酸化物の添加量は、シラス１００重量部に対し
て０７乃至２重量部、好ましくは１乃至１．５重量部で
ある。尚、ＣｕＯの場合、発泡剤の添加量と略１：ｌの
比率とするのがよい。酸化物量が、０．７重量部未満の
場合は比重の大きいものしか得られず酸化剤としての効
果が小さくなり、逆に２重量部を超えると、過剰効果と
なり、気泡が籾く不均一となる。The amount of transition metal oxide added is 0.7 to 2 parts by weight, preferably 1 to 1.5 parts by weight, per 100 parts by weight of Shirasu. In the case of CuO, it is preferable to use a ratio of about 1:1 to the amount of the blowing agent added. If the amount of oxide is less than 0.7 parts by weight, only a product with a high specific gravity will be obtained and the effect as an oxidizing agent will be reduced.On the other hand, if it exceeds 2 parts by weight, an excessive effect will occur, causing non-uniformity such as bubbles forming. Become.
遷移金属酸化物の粒度は、シラス、融剤、発泡剤等と同
様に１．Ｏ〃以下、好ましくは５μ以下のものがよい。The particle size of the transition metal oxide is 1.0%, similar to shirasu, flux, foaming agent, etc. It is preferably less than 0, preferably less than 5μ.
これらの遷移金属の酸化物は、夫々固有の色に着色して
いるが、焼成発泡の際、」二連の通り遷移金属酸化物の
酸素が消費されて自らは還元されると、その金属の低次
の酸化物に変化し、場合によっては金属に迄還元される
。そして、このように還元されると元の酸化物であった
ときの色とは異なった色を呈するのであって、例えばＦ
ｅ２Ｏ３は元来赤色であるが、還元されると灰色を呈し
、ＣｕＯは元来緑色であるが還元されると赤褐色となる
。Each of these transition metal oxides is colored with its own unique color, but during firing and foaming, the oxygen in the transition metal oxide is consumed and itself is reduced, as shown in the double series, and the metal's color changes. It changes to lower-order oxides, and in some cases is even reduced to metals. When reduced in this way, it exhibits a different color from the original oxide, and for example, F
e2O3 is originally red, but becomes gray when reduced, and CuO is originally green, but becomes reddish-brown when reduced.
そしてこのような色変化は、遷移金属酸化物に固有の色
であるが、その度合、表層部から内部にかけての色調変
化、表層部と内部との境界の有無等は、焼成発泡の加熱
温度条件、発泡剤に対する遷移金属酸化物の添加量の割
合等により左右される。即ぢ、遷移金属酸化物の添加量
が発泡剤に対して過剰であって且つ例えば９５０°Ｃの
ような高温発泡の場合は、内部から表層部に至る迄連続
的に色調の変ったものが得られる。This kind of color change is unique to transition metal oxides, but the degree of change, the change in color tone from the surface layer to the inside, the presence or absence of a boundary between the surface layer and the inside, etc., depends on the heating temperature conditions for firing and foaming. , depends on the ratio of the amount of transition metal oxide added to the blowing agent, etc. In other words, if the amount of transition metal oxide added is in excess of the foaming agent and foaming is carried out at a high temperature such as 950°C, the color tone will change continuously from the inside to the surface layer. can get.
又、上記添加量が適量の場合は内部も表層部も同様に還
元されて同じ色になる。又更に上記添加量が適量であっ
て且つ低温発泡の場合は、内部は還元された色、表層部
は酸化物の色を呈し、両者共に発泡はしているが、界面
が明瞭に表れ、色変化は不連続となる。Furthermore, when the amount added is appropriate, both the inside and surface portions are reduced in the same way, resulting in the same color. Furthermore, if the amount added above is appropriate and the foam is foamed at a low temperature, the interior will exhibit a reduced color and the surface layer will exhibit an oxide color.Although both are foamed, the interface will clearly appear and the color will change. Changes become discontinuous.
本発明に於いて、シラスは、密に焼結して微細な気泡を
形成するよう、ボールミル又は震動ミルによって粉砕さ
れた粒径１５μ以下のもの、好ましくは５μ以下のもの
が使用される。又、結晶質鉱物が少ないものが好ましく
、鹿児島県吉用町産の通称「吉川シラス」が好ましい。In the present invention, the shirasu used has a particle diameter of 15 μm or less, preferably 5 μm or less, and has been pulverized by a ball mill or a vibratory mill so as to be densely sintered to form fine bubbles. Also, it is preferable to use one with a small amount of crystalline minerals, and the commonly called "Yoshikawa Shirasu" produced in Yoshimochi Town, Kagoshima Prefecture is preferable.
本発明に於いて使用される融剤としては、シラスと同粒
径以下の五酸化バナジウム又は炭酸アルカリ特に炭酸リ
チウムが好適に使用され、シラス１００重量部に対して
前者は０．１乃至５重量部、後者は３乃至２０重量部、
好ましくは５乃至１５重量部添加する必要がある。添加
量が下限未満の場合は、均一な気泡が得られず、上限を
超える場合は粘度が低くなり過ぎて気泡が潰れて粗く不
均一なガス抜ｉツした発泡体しか得られない。As the flux used in the present invention, vanadium pentoxide or an alkali carbonate, particularly lithium carbonate, having a particle size equal to or smaller than that of Shirasu is preferably used, and the former is 0.1 to 5 parts by weight per 100 parts by weight of Shirasu. parts, the latter being 3 to 20 parts by weight,
Preferably, it is necessary to add 5 to 15 parts by weight. If the amount added is less than the lower limit, uniform bubbles will not be obtained, and if it exceeds the upper limit, the viscosity will be too low and the bubbles will be crushed, resulting in only a coarse, non-uniform, degassed foam.
本発明に於いて使用される発泡剤としては、シラスと同
粒径以下の炭化珪素、窒化珪素、窒化アルミニウムの何
れか、又はその混合物が好適に使用され、シラス１００
重量部に対して０．７乃至２重量部、好ましくは工乃至
１．５重量部添加する必要がある。添加量が０．７重量
部未満の場合は、比重の大きいものしか得られず、又、
２重量部を超える場合は気泡が破れて粗く不均一・とな
り、未分解の発泡剤が残留して無駄となる。As the blowing agent used in the present invention, any one of silicon carbide, silicon nitride, aluminum nitride, or a mixture thereof, which has a particle size equal to or smaller than that of Shirasu, is preferably used.
It is necessary to add 0.7 to 2 parts by weight, preferably 1 to 1.5 parts by weight. If the amount added is less than 0.7 parts by weight, only products with high specific gravity can be obtained, and
If it exceeds 2 parts by weight, the bubbles will burst and become rough and uneven, and undecomposed foaming agent will remain and be wasted.
本発明に於いて、組成物は挿潰機で３０分間以上撹拌混
合するのが好ましい。In the present invention, the composition is preferably stirred and mixed using a crusher for 30 minutes or more.
本発明に於いて、加熱は組成物をセラミンク製皿又は１
ｌｉ１熱鋼容器に入れて電気炉で加熱するのが好ましい
。In the present invention, heating is performed by placing the composition in a ceramic dish or
It is preferable to place it in a li1 heated steel container and heat it in an electric furnace.
（作用）
本発明着色されたシラス発泡体は、シラスに、融剤と発
泡剤とを加えると共に、還元によって本来の色とは異な
った色に変色する遷移金属の酸化物をも加えて混合した
組成物を、加熱して発泡させるので、所望の色に変色す
る遷移金属の酸化物を選択使用すると共に発泡剤の種類
や発泡剤に対する遷移金属酸化物の添加量或いは焼成温
度如何により表層部と内部との色の絹合せ、境界部に於
りる色調の連続・不連続性について種々のものが得られ
る。(Function) The colored shirasu foam of the present invention is made by mixing shirasu with a flux and a blowing agent, as well as a transition metal oxide that changes color to a color different from the original color upon reduction. Since the composition is foamed by heating, a transition metal oxide that changes color to the desired color is selected and used, and the surface layer and the temperature are controlled by the type of foaming agent, the amount of transition metal oxide added to the foaming agent, and the firing temperature. A variety of colors can be obtained with regard to color matching with the interior and continuity/discontinuity of color tone at the boundary.
（実施例）
以下、本発明発泡体の実施例を具体的に説明するが、本
発明は以下の実施例に限定されるものではない。(Examples) Examples of the foam of the present invention will be specifically described below, but the present invention is not limited to the following examples.
実施例１
吉川シラス１００重量部景、炭酸リチウム（キシダ化学
製）７重量部、炭化珪素（太平洋ランダム製ＲＣ−ＢＦ
Ｃ）１重量部、酸化銅（キング化学製）２．５重量部を
加えて１古漬機で６０分間撹拌混合し、得られた組成物
を耐熱ｖＡｓＵｓ３１０ｓ製箱形容器に入れ、電気炉（
モトヤマ製）で９５０°Ｃで４０分間加熱し、３時間か
けて徐冷した。この結果、表層部が見掛比重０．１５、
厚さ約０．５ｍｍ−７＝
で淡緑色に着色し、内部が赤褐色のシラス発泡体が得ら
れた。Example 1 100 parts by weight of Yoshikawa whitebait, 7 parts by weight of lithium carbonate (manufactured by Kishida Chemical Co., Ltd.), silicon carbide (RC-BF manufactured by Pacific Random Co., Ltd.)
C) 1 part by weight and 2.5 parts by weight of copper oxide (King Chemical Co., Ltd.) were added and stirred and mixed for 60 minutes in a 1-kuzuke machine, and the resulting composition was placed in a heat-resistant vAsUs 310s box-shaped container and heated in an electric furnace (
(manufactured by Motoyama) for 40 minutes at 950°C, and slowly cooled over 3 hours. As a result, the apparent specific gravity of the surface layer was 0.15,
A shirasu foam with a thickness of about 0.5 mm-7 and colored pale green with a reddish brown interior was obtained.
実施例２
酸化銅を１重量部とした以外は実施例１と同一条件で成
形を行った。この結果、全体が赤褐色のシラス発泡体が
得られた。Example 2 Molding was carried out under the same conditions as in Example 1 except that copper oxide was used in an amount of 1 part by weight. As a result, a reddish-brown shirasu foam was obtained as a whole.
実施例３
吉田シラス１００重量部に、炭酸リチウム（キシダ化学
製）１５重量部、炭化珪素（太平洋ランダム製ＲＣ−Ｂ
ＦＣ）２重量部、酸化銅（キシダ化学製）１重量部を加
えて播潰機で６０分間撹拌混合し、得られた組成物を耐
熱１ｉ１ｓＵｓ３１０ｓ製箱形容器に入れ、電気炉（モ
トヤマ製）で８５０゛Ｃで４０分間加熱し、３時間か（
）て徐冷した。この結果、表層部が見掛比重０．２５、
厚さ約２ｍｍで淡緑色を呈し且つ微細気泡を有すると共
に、内部が赤褐色で稍粗い気泡を存するシラス発泡体が
得られた。Example 3 100 parts by weight of Yoshida Shirasu, 15 parts by weight of lithium carbonate (manufactured by Kishida Chemical), and silicon carbide (RC-B manufactured by Pacific Random)
Add 2 parts by weight of copper oxide (FC) and 1 part by weight of copper oxide (manufactured by Kishida Chemical Co., Ltd.), stir and mix with a crusher for 60 minutes, place the resulting composition in a box-shaped container made of heat-resistant 1i1sUs310s, and heat it in an electric furnace (manufactured by Motoyama). Heat at 850°C for 40 minutes and leave for 3 hours (
) and slowly cooled. As a result, the apparent specific gravity of the surface layer was 0.25,
A shirasu foam having a thickness of about 2 mm, exhibiting a pale green color and having fine bubbles, and a reddish brown interior containing slightly coarse bubbles was obtained.
実施例４
吉田シラス１００重量部に、五酸化バナジウム（キシダ
化学製）０．３重量部、炭化珪素（太平洋ランダム製Ｒ
Ｃ−Ｂ Ｆ Ｃ）］、、５５重量部酸化鉄（キシダ化学
製）０．５重量部を加えて播潰機で６０分間撹拌混合し
、得られた組成物を実施例１と同様の方法で１１３５’
Ｃで４０分間加熱し、３時間かけて徐冷した。この結果
、表層部が見掛比重０．１６、厚さ約０．５ｍｍで赤褐
色を呈し、内部が灰色のシラス発泡体が得られた。Example 4 100 parts by weight of Yoshida shirasu, 0.3 parts by weight of vanadium pentoxide (manufactured by Kishida Chemical Co., Ltd.), and silicon carbide (R manufactured by Pacific Random Co., Ltd.).
C-B F C)], 55 parts by weight 0.5 parts by weight of iron oxide (manufactured by Kishida Chemical Co., Ltd.) was added and mixed with stirring for 60 minutes using a crusher, and the resulting composition was processed in the same manner as in Example 1. 1135'
The mixture was heated at C for 40 minutes and slowly cooled for 3 hours. As a result, a shirasu foam having an apparent specific gravity of 0.16 and a thickness of approximately 0.5 mm, exhibiting a reddish-brown color on the surface layer, and a gray interior was obtained.
（発明の効果）
本発明着色されたシラス発泡体は、シラスに、融剤と発
泡剤と遷移金属の酸化物とを混合した組成物を、加熱し
て発泡させたものであるから、−工程で容易に所望の色
に着色されたシラス発泡体が得られるという利点を有す
ると共に、各種添加剤の種類、量、焼成温度の調整によ
り表層部と内部との色の組合せ、境界部に於ける色調の
連続・不連続性等種々変化に富んだ色調が得られ、装飾
用途に適したものが得られるという利点を有する。(Effects of the Invention) The colored shirasu foam of the present invention is obtained by heating and foaming a composition in which shirasu is mixed with a flux, a blowing agent, and a transition metal oxide. It has the advantage that it is easy to obtain a shirasu foam colored in the desired color, and by adjusting the type and amount of various additives and the firing temperature, it is possible to create a combination of colors between the surface layer and the inside, and to change the color at the boundary. It has the advantage that a wide variety of color tones, including continuous and discontinuous color tones, can be obtained, making it suitable for decorative purposes.
Claims (1)
合した組成物を、加熱して発泡させたことを特徴とする
着色されたシラス発泡体。1. A colored shirasu foam, which is produced by heating and foaming a composition of shirasu, a flux, a foaming agent, and a transition metal oxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7860288A JPH01249676A (en) | 1988-03-30 | 1988-03-30 | Colored shirasu expanded body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7860288A JPH01249676A (en) | 1988-03-30 | 1988-03-30 | Colored shirasu expanded body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01249676A true JPH01249676A (en) | 1989-10-04 |
Family
ID=13666447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7860288A Pending JPH01249676A (en) | 1988-03-30 | 1988-03-30 | Colored shirasu expanded body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01249676A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016132586A (en) * | 2015-01-19 | 2016-07-25 | 裕光 幅口 | Expandable burned body, and method for manufacturing the same |
-
1988
- 1988-03-30 JP JP7860288A patent/JPH01249676A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016132586A (en) * | 2015-01-19 | 2016-07-25 | 裕光 幅口 | Expandable burned body, and method for manufacturing the same |
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