JPS63115794A - Discoloring sheet material - Google Patents
Discoloring sheet materialInfo
- Publication number
- JPS63115794A JPS63115794A JP61262545A JP26254586A JPS63115794A JP S63115794 A JPS63115794 A JP S63115794A JP 61262545 A JP61262545 A JP 61262545A JP 26254586 A JP26254586 A JP 26254586A JP S63115794 A JPS63115794 A JP S63115794A
- Authority
- JP
- Japan
- Prior art keywords
- sheet material
- shape
- shape memory
- temperature
- memory alloy
- 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
- 239000000463 material Substances 0.000 title claims abstract description 52
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims abstract description 29
- 230000009466 transformation Effects 0.000 claims abstract description 20
- 239000000956 alloy Substances 0.000 abstract description 10
- 229910045601 alloy Inorganic materials 0.000 abstract description 9
- 230000008859 change Effects 0.000 abstract description 6
- 230000008542 thermal sensitivity Effects 0.000 abstract 1
- KHYBPSFKEHXSLX-UHFFFAOYSA-N iminotitanium Chemical compound [Ti]=N KHYBPSFKEHXSLX-UHFFFAOYSA-N 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 230000007087 memory ability Effects 0.000 description 4
- 229910001000 nickel titanium Inorganic materials 0.000 description 4
- 235000019646 color tone Nutrition 0.000 description 3
- 239000011888 foil Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 238000002845 discoloration Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000003446 memory effect Effects 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000005459 micromachining Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920006254 polymer film Polymers 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 239000004986 Cholesteric liquid crystals (ChLC) Substances 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007334 memory performance Effects 0.000 description 1
- -1 metal complex salts Chemical class 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910002058 ternary alloy Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
Abstract
Description
【発明の詳細な説明】
［ａ業上の利用分野］
本発明は変色シート材に係り、特に形状記憶合金の形状
記憶効果を利用して、温度変化により変色するシート材
に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a color-changing sheet material, and particularly to a sheet material that changes color due to temperature changes by utilizing the shape memory effect of a shape memory alloy.
［従来の技術］
色の変化を利用した温度測定の応用分野は言うまでもな
く、身のまわりの温度変化に応じて変色する楽しく意外
性のある新しい機能をもった素材を、ファッションやイ
ンテリア分野へ提供できるようになった。そして更に、
食品、医薬品、化粧品、精密部品等の分野に対して、温
度インジケーター機能付の包装材を提供するなど、産業
用、家庭用の幅広い分野へ応用されている。[Conventional technology] In addition to the application field of temperature measurement using color changes, we provide materials with fun and unexpected new functions that change color in response to changes in the temperature around us, to the fashion and interior fields. Now you can. And furthermore,
It is applied to a wide range of industrial and household fields, including providing packaging materials with temperature indicators for food, pharmaceuticals, cosmetics, precision parts, and other fields.
現在実用化されている温度で色が変化する材料、即ちサ
ーモクロミック材料には、金属塩及び金属錯塩系、コレ
ステリック液晶系、メタモカラー系の３ ｆｉｌｌ類が
ある。Materials that change color with temperature, that is, thermochromic materials that are currently in practical use include three types of fills: metal salt and metal complex salts, cholesteric liquid crystal, and metamocolor.
［発明が解決しようとする問題点コ
しかしながら、上記従来のサーモクロミック材料は、い
ずれも一長一短があり、サーモクロミック材料として、
優れた性能を満足しているものはない。[Problems to be solved by the invention] However, the above-mentioned conventional thermochromic materials all have advantages and disadvantages, and as thermochromic materials,
There is nothing that satisfies excellent performance.
［問題点を解決するための手段］
本発明は、温度感度が良好で優れたサーモクロミズムを
示す変色シートを提供するものであって、
非平坦状に形成された形状記憶合金のシート材であって
、該形状記憶合金の変態温度を境として非平坦状から平
坦状に変形可能としたことを特徴とする変色シート材、
を要旨とするものである。[Means for Solving the Problems] The present invention provides a color-changing sheet that has good temperature sensitivity and exhibits excellent thermochromism, and is a sheet material of a shape memory alloy formed in a non-flat shape. The object of the present invention is to provide a color-changing sheet material that can be deformed from a non-flat shape to a flat shape at a transformation temperature of the shape memory alloy.
［作用］
望性変形させた合金をある変態温度以上とすると変形以
前の形状に戻る性質を有する形状記憶合金は既に知られ
ている。[Function] Shape memory alloys are already known which have the property of returning a desirably deformed alloy to its pre-deformation shape when the temperature exceeds a certain transformation temperature.
本発明のシート材は、この形状記憶合金の形状記憶効果
を利用したものであって、該合金の変態温度を境とする
シート材の表面形状の変化により、シート材の表面の反
射光が変化し、色変化が起こるようにしたものである。The sheet material of the present invention utilizes the shape memory effect of this shape memory alloy, and changes in the surface shape of the sheet material at the transformation temperature of the alloy change the reflected light on the surface of the sheet material. However, it is designed so that a color change occurs.
［実施例］
以下、図面を参照して本発明の実施例につき詳細に説明
する。[Example] Hereinafter, an example of the present invention will be described in detail with reference to the drawings.
第１図（ａ）、（ｂ）は本発明の変色シート材１を示す
斜視図であって、それぞれ（ａ）は変態温度以下の状態
、（ｂ）は変態温度以上の状態を示す。FIGS. 1(a) and 1(b) are perspective views showing a color-changing sheet material 1 of the present invention, in which (a) shows a state below the transformation temperature, and FIG. 1(b) shows a state above the transformation temperature.
図示の実施例の変色シートは、平坦状に成形した可逆形
状記憶合金のシート材を、微細加工により第１図（ａ）
に示すような鋸歯状の波形シート材としたものである。The color-changing sheet of the illustrated example is made by micro-machining a sheet material of a reversible shape memory alloy formed into a flat shape as shown in Fig. 1(a).
This is a corrugated sheet material with serrated edges as shown in the figure.
このようなシート材１では、例えば、使用した形状記憶
合金の変態温度が２０℃である場合、７囲気温度が２０
℃以下では第１図（ａ）の形状のシート材であるが、２
０℃を超えると第１図（ｂ）の如く、その合金の形状記
憶能により成形時の平坦状シート材に復元する。しかし
て、温度が２０℃以下になると、再び第１図（ａ）の波
状シート材となる。In such a sheet material 1, for example, when the transformation temperature of the shape memory alloy used is 20°C, the ambient temperature is 20°C.
℃ or below, the sheet material has the shape shown in Figure 1(a), but 2
When the temperature exceeds 0°C, as shown in FIG. 1(b), the alloy returns to its original flat sheet shape due to its shape memory ability. When the temperature drops below 20° C., the corrugated sheet material as shown in FIG. 1(a) is formed again.
このように、シート材が温度変化により非平坦状から平
坦状へ可逆的に変化することにより、第２図（ａ）、（
ｂ）に示す如く、シート材に当る入射光２の反射光３が
変化することから、シート材の呈する色調も変化するよ
うになることから、本発明のシート材がサーモクロミズ
ムを示すのである。In this way, the sheet material reversibly changes from a non-flat shape to a flat shape due to temperature changes, as shown in Figs.
As shown in b), since the reflected light 3 of the incident light 2 that hits the sheet material changes, the color tone of the sheet material also changes, which is why the sheet material of the present invention exhibits thermochromism.
本発明において、平坦状に成形した形状記憶合金のシー
ト材に微細加工を施して非平坦状とする場合、反射光が
平坦状の場合とは変化するような立体模様がシート表面
に形成されれば良く、その模様の形態には何ら制限はな
い、従って、第１図（ａ）に示す波状のものの他、第２
図に示すように細かい凹凸１ａを形成したもの、その他
の形状としても良い。なお、波や凹凸のピッチ（瞬接す
る彼や凸部の頂部同志の距１ｍ）は５０〜１０００μｍ
程度が好ましい。In the present invention, when a shape memory alloy sheet material formed into a flat shape is subjected to microfabrication to make it non-flat, a three-dimensional pattern is formed on the sheet surface such that the reflected light changes from that when the sheet is flat. There are no restrictions on the form of the pattern.Therefore, in addition to the wavy pattern shown in Figure 1(a),
As shown in the figure, fine irregularities 1a may be formed, or other shapes may be used. In addition, the pitch of waves and unevenness (distance of 1 m between the tops of the convex parts that touch each other momentarily) is 50 to 1000 μm.
degree is preferred.
このような本発明のシート材を製造するには、まず形状
記憶合金の薄板ないし箔等の薄材を作製する。形状記憶
合金の薄材の作製方法としては、次の■〜■の方法が挙
げられる。In order to manufacture such a sheet material of the present invention, first, a thin material such as a thin plate or foil of a shape memory alloy is produced. Examples of methods for producing thin shape memory alloy materials include the following methods (1) to (2).
■ 圧延又は急冷法により薄帯を作製する。■ Produce a ribbon by rolling or quenching method.
■ 高分子フィルム又はＡ１等の金属のホイル上に形状
記憶合金のスパッタリング膜を形成する。その後、必要
に応じて、高分子フィルム又は金属ホイルを除去する。(2) Forming a sputtering film of a shape memory alloy on a polymer film or a metal foil such as A1. Thereafter, the polymer film or metal foil is removed, if necessary.
■ 形状記憶合金の成分金属のシートに成分金属ないし
合金をスパッタリング又は基層し、含有量を調整する。(2) Sputtering or base layering the component metals or alloys on a sheet of the component metals of the shape memory alloy, and adjusting the content.
例えば、Ｎ ｉ −Ｔ ｉ合金であれば、Ｎｉシート又
はＴｉシートの表面に所定量のＴｉ又はＮｉをスパッタ
又は碁石して所定のＮｉ−Ｔｉ含有量のシートとする。For example, in the case of a Ni-Ti alloy, a predetermined amount of Ti or Ni is sputtered or coated on the surface of a Ni sheet or a Ti sheet to obtain a sheet with a predetermined Ni-Ti content.
次いで、得られた薄材に微細加工により立体模様等を付
与して非平坦状とする。Next, the obtained thin material is given a three-dimensional pattern or the like by micromachining to make it non-flat.
なお、本発明のシート材の厚さは、あまりに厚すぎると
形状記憶合金の良好な形状記憶性能や温度感度が十分に
得られない、このため、シート材の厚さは平坦状におけ
る厚さで０．２ｍｍ以下、好ましくは０．０１〜０．１
ｍｍ程度とするのが良い。Note that if the thickness of the sheet material of the present invention is too thick, the good shape memory performance and temperature sensitivity of the shape memory alloy cannot be sufficiently obtained. 0.2 mm or less, preferably 0.01 to 0.1
It is preferable to set it to about mm.
なお、本発明において、用いる形状記憶合金は、シート
材の使用目的に応じて、必要とする変色温度に変態温度
を有する形状記憶合金を還定する。形状記憶合金は、特
に可逆的に変化する可逆形状記憶合金を用いるのが有利
である。In the present invention, the shape memory alloy used is a shape memory alloy having a transformation temperature equal to the required discoloration temperature depending on the purpose of use of the sheet material. It is advantageous to use a shape memory alloy, in particular a reversible shape memory alloy which changes reversibly.
現在、提案されてりいる形状記憶合金としては、例えば
Ｎ ｉ −Ｔ ｉ系、Ｃｕ−Ｚｎ−ＡｊＺ系、その他Ｃ
ｕ−Ｚｎ％Ｃｕ−Ａｊ２−Ｎ ｉ系等の合金が挙げられ
る。代表的な形状記憶合金とその変態温度は第１表に示
す通りである。Shape memory alloys that have been proposed at present include, for example, Ni-Ti series, Cu-Zn-AjZ series, and other C
Examples include alloys such as u-Zn%Cu-Aj2-Ni. Typical shape memory alloys and their transformation temperatures are shown in Table 1.
第 １ 表
＊１＝ｗｔ％
＊２：Ｍｓ＝冷却冷却度態開始温度
＊３：Ａｓ＝加熱時の変態開始温度
なお、Ｃｕ−Ｚｎ−Ａ１３元合金の形状記憶を示す濃度
範囲はＣｕ６８〜８０％で、残りの２０〜３２％は種々
の組成比のＺｎとＡＩＬからなっており、組成をわずか
に変化するだけで、変態温度は大きく変化し、−１０５
〜３８０℃の範囲に調節することができる。Table 1 *1 = wt% *2: Ms = starting temperature of cooling degree *3: As = starting temperature of transformation during heating Note that the concentration range showing shape memory of the Cu-Zn-A ternary alloy is Cu68-80 %, and the remaining 20 to 32% consists of Zn and AIL in various composition ratios, and by changing the composition slightly, the transformation temperature changes greatly, and -105
It can be adjusted within the range of ~380°C.
これらの形状記憶合金のうち、本発明においては、特に
Ｎ ｉ −Ｔ ｉ合金を用いるのが好ましい。Among these shape memory alloys, it is particularly preferable to use a Ni-Ti alloy in the present invention.
即ち、Ｎｉ−Ｔｉ合金は耐食性が極めて良く、また形状
記憶能も優れる上に、超弾性的性質も有するため、本発
明の変色シート材として最適である。That is, the Ni-Ti alloy has extremely good corrosion resistance, excellent shape memory ability, and superelasticity, so it is most suitable as the color-changing sheet material of the present invention.
なお、以上の説明では、平坦状に成形したシート材に微
細加工を施して非平坦状とし、変態温度以下で非平坦状
、変態温度以上で平坦状となることにより異なる色調を
呈するシートについて説明したが、本発明の変色シート
は、形状記憶合金の形状記憶能により、温度変化で平坦
状から非平坦状へ又は非平坦状から平坦状へ変形するも
のであれば良く、その他、非平坦状に成形したシート材
にひずみを加えて平坦状とし、変態温度以下では平坦状
、変態温度以上では非平坦状となるシート材であっても
良い。In addition, in the above explanation, a sheet material formed into a flat shape is micro-processed to make it non-flat, and the sheet exhibits different color tones by becoming non-flat at temperatures below the transformation temperature and becoming flat at temperatures above the transformation temperature. However, the color-changing sheet of the present invention may be any sheet that can be deformed from a flat shape to a non-flat shape or from a non-flat shape to a flat shape due to a temperature change due to the shape memory ability of the shape memory alloy. The sheet material may be formed into a flat shape by applying strain to the sheet material, which becomes flat at temperatures below the transformation temperature and becomes non-flat at temperatures above the transformation temperature.
［発明の効果］
以上詳述した通り、本発明の変色シート材は、非平坦状
に形成された形状記憶合金のシート材で、該形状記憶合
金の変態温度を境として非平坦状から平坦状に変形可能
としたものであって、温度変化による変形により、反射
光を変化させて色調が変わるものである。このような本
発明の変色シート材は、形状記憶合金の優れた形状記憶
能及び温度感度により、従来にない高特性サーモクロミ
ック材料を提供するものであって、その工業的な有用性
は著しく高い。[Effects of the Invention] As detailed above, the color-changing sheet material of the present invention is a sheet material of a shape memory alloy formed in a non-flat shape, and changes from a non-flat state to a flat state at the transformation temperature of the shape memory alloy. The color tone can be changed by changing the reflected light by deforming due to temperature changes. The color-changing sheet material of the present invention provides a thermochromic material with unprecedented high properties due to the excellent shape memory ability and temperature sensitivity of the shape memory alloy, and its industrial usefulness is extremely high. .
第１図（ａ）、（ｂ）は本発明の変色シート材を示す斜
視図であって、それぞれ（ａ）は変態温度以下の状態、
（ｂ）は変態温度以上の状態を示す。第２図（ａ）、（
ｂ）は、各々、第１図（ａ）、（ｂ）の状態のシート材
の光反射を説明する断面図、第３図は本発明のシート材
の他の例を示す斜視図である。
１・・・変色シート材、 ２・・・入射光３・・・
反射光。
代理人 弁理士 重 野 剛第１図
（ａ）（ｂ）
第２図
第３図FIGS. 1(a) and 1(b) are perspective views showing the color-changing sheet material of the present invention, in which (a) shows a state below the transformation temperature;
(b) indicates a state where the temperature is higher than the transformation temperature. Figure 2 (a), (
b) is a sectional view illustrating light reflection of the sheet material in the states of FIGS. 1(a) and (b), respectively, and FIG. 3 is a perspective view showing another example of the sheet material of the present invention. 1... Discoloration sheet material, 2... Incident light 3...
reflected light. Agent Patent Attorney Tsuyoshi Shigeno Figure 1 (a) (b) Figure 2 Figure 3
Claims (1)
あって、該形状記憶合金の変態温度を境として非平坦状
から平坦状に変形可能としたことを特徴とする変色シー
ト材。(1) A color-changing sheet material of a shape memory alloy formed in a non-flat shape, which is capable of deforming from a non-flat shape to a flat shape at the transformation temperature of the shape memory alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61262545A JPS63115794A (en) | 1986-11-04 | 1986-11-04 | Discoloring sheet material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61262545A JPS63115794A (en) | 1986-11-04 | 1986-11-04 | Discoloring sheet material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63115794A true JPS63115794A (en) | 1988-05-20 |
Family
ID=17377298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61262545A Pending JPS63115794A (en) | 1986-11-04 | 1986-11-04 | Discoloring sheet material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63115794A (en) |
-
1986
- 1986-11-04 JP JP61262545A patent/JPS63115794A/en active Pending
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