JPH0120663B2 - - Google Patents
Info
- Publication number
- JPH0120663B2 JPH0120663B2 JP19635883A JP19635883A JPH0120663B2 JP H0120663 B2 JPH0120663 B2 JP H0120663B2 JP 19635883 A JP19635883 A JP 19635883A JP 19635883 A JP19635883 A JP 19635883A JP H0120663 B2 JPH0120663 B2 JP H0120663B2
- Authority
- JP
- Japan
- Prior art keywords
- coating
- metal
- oxide
- radiation
- group
- 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
Links
- 238000000576 coating method Methods 0.000 claims description 35
- 239000011248 coating agent Substances 0.000 claims description 33
- 229910052751 metal Inorganic materials 0.000 claims description 17
- 239000002184 metal Substances 0.000 claims description 17
- 239000000843 powder Substances 0.000 claims description 16
- 230000005855 radiation Effects 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 9
- 229910052804 chromium Inorganic materials 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 8
- 229910052748 manganese Inorganic materials 0.000 claims description 8
- 229920001558 organosilicon polymer Polymers 0.000 claims description 8
- 229910052759 nickel Inorganic materials 0.000 claims description 7
- 229910001111 Fine metal Inorganic materials 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 229910052726 zirconium Inorganic materials 0.000 claims description 6
- 229910052787 antimony Inorganic materials 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 5
- 229910052718 tin Inorganic materials 0.000 claims description 5
- 229910052719 titanium Inorganic materials 0.000 claims description 5
- 229910052788 barium Inorganic materials 0.000 claims description 4
- 229910052725 zinc Inorganic materials 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 2
- 239000010408 film Substances 0.000 description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 150000001875 compounds Chemical class 0.000 description 8
- 239000011230 binding agent Substances 0.000 description 6
- 239000000919 ceramic Substances 0.000 description 6
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 5
- 239000003086 colorant Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 150000002739 metals Chemical class 0.000 description 5
- 230000003595 spectral effect Effects 0.000 description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- 229910010413 TiO 2 Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920000592 inorganic polymer Polymers 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000007751 thermal spraying Methods 0.000 description 2
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 229910052692 Dysprosium Inorganic materials 0.000 description 1
- 229910052691 Erbium Inorganic materials 0.000 description 1
- 229910052693 Europium Inorganic materials 0.000 description 1
- 229910017061 Fe Co Inorganic materials 0.000 description 1
- 229910052688 Gadolinium Inorganic materials 0.000 description 1
- 229910052689 Holmium Inorganic materials 0.000 description 1
- 229910052765 Lutetium Inorganic materials 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 229910052777 Praseodymium Inorganic materials 0.000 description 1
- 229910052772 Samarium Inorganic materials 0.000 description 1
- 229910052771 Terbium Inorganic materials 0.000 description 1
- 229910052775 Thulium Inorganic materials 0.000 description 1
- 229910052769 Ytterbium Inorganic materials 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- -1 alumina Chemical class 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005524 ceramic coating Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- LBJNMUFDOHXDFG-UHFFFAOYSA-N copper;hydrate Chemical compound O.[Cu].[Cu] LBJNMUFDOHXDFG-UHFFFAOYSA-N 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002491 polymer binding agent Substances 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000011163 secondary particle Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 229910000314 transition metal oxide Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052845 zircon Inorganic materials 0.000 description 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Paints Or Removers (AREA)
Description
産業上の利用分野
本発明は、暖房、調理等で輻射加熱を行う赤外
線加熱分野で、高効率の赤外線輻射体を形成する
ため、金属、セラミツク等の加熱体表面に適用し
て用いる被膜に関するものである。
従来例の構成とその問題点
従来の赤外線輻射被膜としては、アルミナ、チ
タニア、ジルコニア等の酸化物、或いは化合物を
溶射にて、直接基材上に被覆形成したり、ガラス
フリツト等のバインダー中に分散させ、ホーロー
被覆を形成したりするものが知られているが、被
覆が100μｍ以上と厚いため、熱膨脹係数が合わ
ず、基材との密着が悪かつたり、600℃以上に加
熱すると被覆が溶解したりして、600℃以上の高
温下では、適用できない等の欠点があつた。
また、溶射法の場合、その被覆形成工程も非常
に複雑なプロセスが必要であつた。
一般に、高輻射被膜を形成しようとすれば、膜
厚が厚い方が有利で、セラミツク被膜であれば、
膜厚は100μｍ以上となり、基材との熱膨脹の差
がとくに問題となり、ヒートシヨツクに弱い欠点
があつた。
発明の目的
本発明は、この様な従来の欠点を解消するもの
で、20〜50μｍの薄膜の形成により、輻射率が0.8
以上の高輻射体を形成するものである。
例えば、そのメツシユが30メツシユと細かな金
網等の複雑な形状への適用も可能とするものであ
る。また、900℃の温度にて適用される高温の加
熱面への適用をも目的とするものである。
また高輻射であると同時に非常に高強度の信頼
性の高い被膜を形成することも本発明の目的であ
る。
発明の構成
この目的を達成するために、本発明は、ポリボ
ロシロキサン樹脂を主成分とする有機ケイ素重合
体、を被膜のバインダーとして用いる。
Ti、Ba、Ni、Sb、Cr、Fe、Zn、Co、Al、
Cu、Mn、Si、Zr、Snおよび希土類元素の群から
選択した少なくとも１種の酸化物、およびFe、
Mn、Cu、Cr、Co、Niの群から選択した１種以
上の金属微粉末を前記バインダー中に分散させ、
塗料化したものを用いて、基材上に塗布焼成した
後の硬化体として、赤外線輻射被膜を得る。
被膜中に分散微粉末は、それぞれ、“微細な鏡”
として、被膜内に入射した光を有効に反射する作
用をする。同時に被膜に関して、あたかも鉄筋コ
ンクリートの鉄のような働きにより、高強度化に
寄与する。前記酸化物は、充填剤として、或い
は、被膜の着色剤として、被膜自体の骨格形成お
よび赤外線散乱体として寄与する。
実施例の説明
第１図に本発明の概念図を示す。第１図におい
て、１は基材で、金属、セラミツク等から成る。
２が本発明の被膜バインダーでポリボロンシロキ
サン樹脂を主成分とする有機ケイ素重合体の硬化
体である。３はTi、Ba、Ni、Sb、Cr、Fe、Zn、
Co、Al、Cu、Mn、Si、Zr、Snおよび希土類元
素の群から選択した少なくとも１種の酸化物であ
る。
４はFe、Mn、Cu、Cr、Co、Niの群から選択
した１種以上の金属微粉末である。金属微粉末の
粒径は10μｍ以下のものを用いるのが望ましい。
とくに、1μｍ以下の超微粉を用いると、少量の
添加量で著しい輻射率の向上が得られる。
この被膜の光学的挙動は以下の通りである。キ
ルヒホツフの法則から、輻射率は、吸収率に等し
いので、説明は、被膜の赤外線に対する吸収性に
関して行なう。
赤外線は、この被膜の中に入射して、有機ケイ
素重合体のバインダー中を１部の波長の光を吸収
され減衰しながら、進行する。この光は、酸化物
により、１部吸収と散乱の影響を受ける。光が金
属微粉末に当たつた場合には、大きく反射され
る。被膜の中には、このような酸化物と金属微粉
末が、無数に存在するため、光は多重散乱と多重
反射の影響を受け、一度被膜中に入射したら、ほ
とんど吸収され、出られなくなる。したがつて、
赤外線の放射に関しては、この被膜は、黒体に近
い、高輻射体を形成することができる。
しかも、この被膜の色は、その表面の可視光の
選択吸収反射特性によつて決まるが、被膜の大部
分をなす。酸化物の色によつて決まる。わずかに
灰色を帯びた白色から、黒色まで各種の色の選択
が可能である。
この様な着色酸化物として、（TiO2・BaO・
NiO）より成る黄色の化合物、また（TiO2・
Sb2O3・Cr2O3）より成る黄土色の化合物、
（Fe2O3・ZnO・Cr2O3）より成る茶色の化合物、
（TiO2・ZnO・CoO・NiO）より成る緑色の化合
物、（CoO・Cr2O3・Al2O3）より成る緑色の化合
物、（CoO・Al2O3）より成る青色の化合物、
（CuO・Cr2O3）より成る黒色の化合物、
（Fe2O3・MnO2・CuO）より成る黒色の化合物な
どいずれも適用可能である。また陶磁器用着色剤
として用いられるジルコニア系化合物（ジルコ
ン、ジルコニア）に遷移金属酸化物、もしくは、
La、Ce、Pr、Nd、Pm、Sm、Eu、Gd、Tb、
Dy、Ho、Er、Tm、Yb、Luなどの希土類元素
酸化物などを添加、複合した酸化物なども良い。
これらの酸化物の粒径は0.5〜5μｍの範囲が良
い。その理由は、この粒径にあると分散が非常に
良くなることと、二次粒子が2.5μｍ以上位とな
り、赤外線の散乱吸収に非常に有利であるためで
ある。
本発明の高輻射の要因は、酸化物の多重散乱と
金属微粒子の多重反射にあるため、酸化物に関し
ては適用の選択の巾は広い。Ti、Zr、Al、Sn、
Zr、Siの群から選択した酸化物、複合酸化物（こ
れ等はいずれも白色である。）と前記着色剤との
組合せが望ましい。
金属微粉末として、Fe、Mn、Cu、Cr、Co、
Ni、の群から選択した１種以上の金属を用いる。
Fe−Co、ステンレス粉末など合金を用いても
良い。上記金属に関して高温で焼成した場合に
は、金属単独では酸化物へと変化するが、有機ケ
イ素重合体の被膜の中では、酸素の拡散は極めて
遅く、金属として安定である。とくに金属の表面
層に酸化物ができた後には、酸化の進行は遅い。
前記金属の中では、耐酸化性の観点から、Ni
粉末の適用が最良である。
金属微粉末の配合量としては、前記金属酸化物
に対して、重量比で５／100〜100／100の範囲が
良い。
粒径が0.01〜10μｍまでの金属微粉を用いる場
合には50／100〜100／100の範囲が良く、0.01μｍ
以下のいわゆる金属超微粉を用いる場合には５／
100〜10／100の範囲が良い。
ポリボロシロキサン樹脂は、例えば
のような構造のポリマーを主成分とするものであ
る。このバインダーは“セミ無機ポリマー”とし
ての特性を有し、室温状態では、有機高分子と同
様の性状で、塗料化の操作性の面で優れている。
加熱するとその有機分は分解して、Si、Ｃ、
Ｂ、Ｏを骨格としてセラミツク化する。完全なセ
ラミツク化は600℃にて行なわれる。
以下、実施例を記載する。
ポリボロシロキサン樹脂を主成分とする有機ケ
イ素重合体として、昭和電線電纜(株)の無機ポリマ
ー「SMP−32」を用いた。このバインダーは600
℃でセラミツク化して安定化するが、その間の熱
分解により、初期の２／３の重量が失われ残渣は
１／３となる。
INDUSTRIAL APPLICATION FIELD The present invention relates to a coating applied to the surface of a heating element such as metal or ceramic in order to form a highly efficient infrared radiator in the field of infrared heating in which radiant heating is performed for heating, cooking, etc. It is. Structure of conventional examples and their problems Conventional infrared radiation coatings include coating oxides or compounds such as alumina, titania, and zirconia directly on the substrate by thermal spraying, or dispersing them in a binder such as glass frit. It is known that the coating is thicker than 100μm, so the thermal expansion coefficients do not match, resulting in poor adhesion to the base material, and the coating melts when heated to over 600℃. Therefore, it had drawbacks such as being unable to be applied at high temperatures of 600°C or higher. Furthermore, in the case of thermal spraying, the coating formation process also requires a very complicated process. Generally, when trying to form a high radiation coating, the thicker the coating is, the more advantageous it is, and if it is a ceramic coating,
The film thickness was 100 μm or more, and the difference in thermal expansion with the base material was a particular problem, making it weak against heat shock. Purpose of the Invention The present invention eliminates such conventional drawbacks, and by forming a thin film of 20 to 50 μm, the emissivity is 0.8.
The above-mentioned high-radiation body is formed. For example, the mesh can be applied to complicated shapes such as fine wire meshes with 30 meshes. It is also intended for application to high temperature heating surfaces at temperatures of 900°C. It is also an object of the present invention to form a highly reliable coating that has high radiation as well as extremely high strength. Structure of the Invention To achieve this object, the present invention uses an organosilicon polymer, the main component of which is a polyborosiloxane resin, as a binder for the coating. Ti, Ba, Ni, Sb, Cr, Fe, Zn, Co, Al,
At least one oxide selected from the group of Cu, Mn, Si, Zr, Sn and rare earth elements, and Fe,
Dispersing one or more metal fine powders selected from the group of Mn, Cu, Cr, Co, and Ni in the binder,
The infrared radiation coating is obtained as a cured product by applying and baking the coating onto a base material. Each fine powder dispersed in the coating is a “fine mirror”
As a result, it effectively reflects the light that enters the coating. At the same time, the coating acts like iron in reinforced concrete, contributing to higher strength. The oxide contributes as a filler, as a coloring agent for the coating, to form the skeleton of the coating itself, and as an infrared scatterer. DESCRIPTION OF EMBODIMENTS FIG. 1 shows a conceptual diagram of the present invention. In FIG. 1, reference numeral 1 denotes a base material made of metal, ceramic, or the like.
2 is the film binder of the present invention, which is a cured product of an organosilicon polymer whose main component is polyboron siloxane resin. 3 is Ti, Ba, Ni, Sb, Cr, Fe, Zn,
At least one oxide selected from the group of Co, Al, Cu, Mn, Si, Zr, Sn, and rare earth elements. 4 is one or more metal fine powders selected from the group of Fe, Mn, Cu, Cr, Co, and Ni. It is desirable to use a metal fine powder having a particle size of 10 μm or less.
In particular, when ultrafine powder of 1 μm or less is used, a remarkable improvement in emissivity can be obtained with a small amount added. The optical behavior of this coating is as follows. From Kirchhoff's law, emissivity is equal to absorption, so the explanation will be made in terms of the absorption of infrared rays by the coating. Infrared rays enter this coating and travel through the organosilicon polymer binder while some of the wavelengths of light are absorbed and attenuated. This light is partially absorbed and scattered by the oxide. When light hits fine metal powder, it is largely reflected. Because there are countless amounts of such oxides and fine metal powders in the film, light is affected by multiple scattering and multiple reflections, and once it enters the film, most of the light is absorbed and cannot be emitted. Therefore,
Regarding infrared radiation, this coating can form a high-radiance body, close to a black body. Furthermore, the color of this coating is determined by the visible light selective absorption/reflection characteristics of its surface, which constitutes the majority of the coating. Determined by the color of the oxide. You can choose from a variety of colors, from white with a slight gray tinge to black. Such colored oxides include (TiO 2・BaO ・
A yellow compound consisting of (NiO) and ( TiO2 .
an ocher-colored compound consisting of Sb 2 O 3 and Cr 2 O 3 ),
A brown compound consisting of (Fe 2 O 3・ZnO ・Cr 2 O 3 ),
A green compound consisting of (TiO 2 · ZnO · CoO · NiO), a green compound consisting of (CoO · Cr 2 O 3 · Al 2 O 3 ), a blue compound consisting of (CoO · Al 2 O 3 ),
A black compound consisting of (CuO・Cr 2 O 3 ),
Any black compound consisting of (Fe 2 O 3・MnO 2・CuO) can be applied. In addition, transition metal oxides or zirconia compounds (zircon, zirconia) used as colorants for ceramics,
La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb,
Oxides containing rare earth element oxides such as Dy, Ho, Er, Tm, Yb, and Lu may also be added or compounded. The particle size of these oxides is preferably in the range of 0.5 to 5 μm. The reason for this is that dispersion becomes very good at this particle size, and the secondary particles are about 2.5 μm or more, which is very advantageous for scattering and absorbing infrared rays. The high radiation of the present invention is caused by multiple scattering of oxides and multiple reflections of fine metal particles, so there is a wide range of application options for oxides. Ti, Zr, Al, Sn,
A combination of an oxide or composite oxide selected from the group of Zr and Si (all of which are white) and the colorant is desirable. Fine metal powders include Fe, Mn, Cu, Cr, Co,
One or more metals selected from the group of Ni are used. Alloys such as Fe-Co and stainless steel powder may also be used. When the above-mentioned metals are fired at high temperatures, the metals alone change into oxides, but in the organosilicon polymer coating, oxygen diffusion is extremely slow and the metals are stable. Oxidation progresses slowly, especially after oxides are formed on the surface layer of the metal. Among the metals mentioned above, from the viewpoint of oxidation resistance, Ni
Powder application is best. The amount of metal fine powder to be blended is preferably in the range of 5/100 to 100/100 in terms of weight ratio to the metal oxide. When using fine metal powder with a particle size of 0.01 to 10 μm, the range of 50/100 to 100/100 is good, and 0.01 μm
When using the following so-called ultrafine metal powder, 5/
A range of 100 to 10/100 is good. Polyborosiloxane resins are, for example, The main component is a polymer with a structure like this. This binder has the characteristics of a "semi-inorganic polymer" and has properties similar to organic polymers at room temperature, and is excellent in terms of operability when turning into a paint. When heated, the organic content decomposes to form Si, C,
Ceramic is formed using B and O as the skeleton. Complete ceramicization takes place at 600°C. Examples will be described below. As the organosilicon polymer whose main component is polyborosiloxane resin, an inorganic polymer "SMP-32" manufactured by Showa Denshin Co., Ltd. was used. This binder is 600
Although it is stabilized by turning into ceramic at ℃, 2/3 of the initial weight is lost due to thermal decomposition during that time, and the residue becomes 1/3.
【表】
SMP−32を100重量部に対して、表の配合に
て、塗料を調合し、約20μｍの膜厚にて、ステン
レス板〔18Cr−３〜５％Al〕上に塗布し、150℃
30分、250℃、30分、600℃、５分焼成して、被膜
を得た。
このテストピースに関して、表面温度を500℃
に設定し、日本分光(株)製分光輻射装置を用いて各
被膜の分光輻射特性を評価した。
Ｐ−２〜Ｐ−７塗料を用いた被膜は、いずれも
同様の輻射パターンを示した。
第２図に代表的な分光輻射特性のデータを示
す。
図において、５は基材のステンレスのみの場合
であり、６が、Ｐ−１の場合、７がＰ−５の場合
でＰ−２〜Ｐ−７いずれもほとんど同じであつ
た。
第２図の７に見られるように本発明の被膜は、
20μｍと極めて薄膜であるにも拘らず、ほとんど
波長依存性のない高い放射率を示していることが
分る。
本発明の被膜に関して、膜厚の寄与は５〜50μ
ｍの範囲内でほとんど分光輻射特性の差がなかつ
た。50μｍを越えると、被膜はヒートシヨツクに
対して弱くなる傾向が認められた。
酸化物および金属微粉の有機ケイ素重合体に対
する配合比は600℃が熱残渣に対して、重量比
１／２〜３／１の範囲が良好であつた。３／１を
越えると被膜は脆くなり、１／２以下の場合に
は、被膜としての充填が不十分となり、輻射特性
が悪く、特定波長で輻射が低くなる現象が認めら
れる。
以上の様にして形成した被膜は、極めて優れた
特性を示した。とくに耐ヒートシヨツク性が非常
に優れ、炉中で1000℃に加熱した後に、水中投入
する試験を１サイクルとして10サイクル実施した
が、被膜には剥離、割れなどの異常は全く認めら
れなかつた。
発明の効果
以上のように本発明の被膜は、
(1) 10〜50μｍと極めて薄膜にて、ほとんど黒体
に近い、波長依存性の少ないフラツトは高輻射
体を得ることができる。
(2) スプレーにて塗布可能であり、金網状金属か
ら、セラミツクハニウム等の多くの基材、複雑
な形状物に適用可能であり、その形状をほとん
ど変化させない。
(3) 薄膜のため、極めて密着性が良好で、とくに
ヒートシヨツクに強く、高信頼性の被膜が得ら
れる。
(4) 必要に応じて、各種の色に着色可能で、カラ
フルな高輻射面を形成できる。
等の有効な効果を有する。[Table] For 100 parts by weight of SMP-32, paint was prepared according to the composition shown in the table, and applied to a stainless steel plate [18Cr-3-5% Al] to a film thickness of approximately 20μm. ℃
A film was obtained by baking for 30 minutes, 250°C for 30 minutes, and 600°C for 5 minutes. Regarding this test piece, the surface temperature was set to 500℃.
The spectral radiation characteristics of each coating were evaluated using a spectral radiant device manufactured by JASCO Corporation. All coatings using paints P-2 to P-7 showed similar radiation patterns. Figure 2 shows data on typical spectral radiation characteristics. In the figure, 5 is the case where the base material is only stainless steel, 6 is the case where P-1 is used, and 7 is the case where P-5 is used, and all of P-2 to P-7 are almost the same. As seen at 7 in FIG. 2, the coating of the present invention is
It can be seen that although the film is extremely thin at 20 μm, it exhibits a high emissivity with almost no wavelength dependence. Regarding the coating of the present invention, the contribution of the film thickness is 5 to 50μ
There was almost no difference in spectral radiation characteristics within the range of m. It was observed that when the thickness exceeds 50 μm, the film tends to become weak against heat shock. The blending ratio of the oxide and metal fine powder to the organosilicon polymer was found to be favorable at 600 DEG C., with a weight ratio of 1/2 to 3/1 relative to the heat residue. If it exceeds 3/1, the coating becomes brittle, and if it is less than 1/2, the coating becomes insufficiently filled, resulting in poor radiation characteristics and low radiation at specific wavelengths. The film formed as described above showed extremely excellent properties. In particular, it has excellent heat shock resistance, and after 10 cycles of testing in which the film was heated to 1000°C in a furnace and then placed in water, no abnormalities such as peeling or cracking were observed in the film. Effects of the Invention As described above, the coating of the present invention has the following features: (1) A very thin film of 10 to 50 .mu.m, almost like a black body, and a flat, high-emissive material with little wavelength dependence can be obtained. (2) It can be applied by spraying, and can be applied to many base materials such as wire-mesh metal to ceramic hanium, as well as complex-shaped objects, and the shape hardly changes. (3) Because it is a thin film, it has extremely good adhesion, is particularly resistant to heat shock, and provides a highly reliable coating. (4) It can be colored in various colors as needed to form a colorful high-radiation surface. It has effective effects such as
第１図は本発明の一実施例の赤外線高輻射被膜
の要部断面図、第２図は同分光輻射特性図であ
る。
１……基材、２……ポリボロシロキサン樹脂を
主成分とする有機ケイ素重合体の硬化体、３……
Ti、Ba、Ni、Sb、Cr、Fe、Zn、Co、Al、Cu、
Mn、Si、Zr、Snおよび希土類元素の群から選択
した１種以上の金属微粉末。
FIG. 1 is a sectional view of a main part of a high-infrared radiation coating according to an embodiment of the present invention, and FIG. 2 is a spectral radiation characteristic diagram thereof. 1... Base material, 2... Cured body of organosilicon polymer containing polyborosiloxane resin as main component, 3...
Ti, Ba, Ni, Sb, Cr, Fe, Zn, Co, Al, Cu,
One or more metal fine powders selected from the group of Mn, Si, Zr, Sn and rare earth elements.
Claims (1)
ケイ素重合体、およびTi、Ba、Ni、Sb、Cr、
Fe、Zn、Co、Al、Cu、Mn、Si、Zr、Snおよび
希土類元素の群から選択した少なくとも１種の酸
化物、およびFe、Mn、Cu、Cr、Co、Niの群か
ら選択した１種以上の金属微粉末の硬化体より成
る赤外線輻射被膜。 ２ 金属微粉末の粒径が10μｍ以下であり、前記
酸化物に対する配合比が重量比で５／100〜100／
100である特許請求の範囲第１項記載の赤外線輻
射被膜。[Claims] 1. An organosilicon polymer whose main component is a polyborosiloxane resin, and Ti, Ba, Ni, Sb, Cr,
At least one oxide selected from the group of Fe, Zn, Co, Al, Cu, Mn, Si, Zr, Sn and rare earth elements, and one selected from the group of Fe, Mn, Cu, Cr, Co, Ni. An infrared radiation coating made of a hardened material of fine metal powder of more than 100%. 2 The particle size of the metal fine powder is 10 μm or less, and the blending ratio with respect to the oxide is 5/100 to 100/
100. The infrared radiation coating according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58196358A JPS6088082A (en) | 1983-10-20 | 1983-10-20 | Infrared ray radiating film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58196358A JPS6088082A (en) | 1983-10-20 | 1983-10-20 | Infrared ray radiating film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6088082A JPS6088082A (en) | 1985-05-17 |
| JPH0120663B2 true JPH0120663B2 (en) | 1989-04-18 |
Family
ID=16356509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58196358A Granted JPS6088082A (en) | 1983-10-20 | 1983-10-20 | Infrared ray radiating film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6088082A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2561838B2 (en) * | 1987-04-30 | 1996-12-11 | 昭和電線電纜株式会社 | Heat radiation paint |
| JP2561837B2 (en) * | 1987-04-30 | 1996-12-11 | 昭和電線電纜株式会社 | Heat and chemical resistant paint |
| JP2862250B2 (en) * | 1988-10-04 | 1999-03-03 | 三東商事株式会社 | Far-infrared radiation abrasion-resistant coating, far-infrared radiation abrasion-resistant composition, and method of forming far-infrared radiation abrasion-resistant coating |
| JP2758032B2 (en) * | 1989-07-12 | 1998-05-25 | 松下電器産業株式会社 | Coating material and cooking device equipped with coating material |
| JPH0457857A (en) * | 1990-06-26 | 1992-02-25 | Tatsuta Electric Wire & Cable Co Ltd | Heat shielding paint for IC |
| JPH1180624A (en) * | 1997-09-09 | 1999-03-26 | Nisshin Steel Co Ltd | Heat reflecting coating composition and coated product |
-
1983
- 1983-10-20 JP JP58196358A patent/JPS6088082A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6088082A (en) | 1985-05-17 |
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