JPH08261956A - Oily stain measuring method for metal, glass, and ceramic material surface - Google Patents
Oily stain measuring method for metal, glass, and ceramic material surfaceInfo
- Publication number
- JPH08261956A JPH08261956A JP8623595A JP8623595A JPH08261956A JP H08261956 A JPH08261956 A JP H08261956A JP 8623595 A JP8623595 A JP 8623595A JP 8623595 A JP8623595 A JP 8623595A JP H08261956 A JPH08261956 A JP H08261956A
- Authority
- JP
- Japan
- Prior art keywords
- water
- glass
- metal
- measured
- oily
- 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
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- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、金属、ガラス及びセラ
ミックス材料の洗浄の分野において、表面の油性汚れを
測定し、洗浄品質を確認する油性汚れ測定方法に関する
もので、特にオゾン層保護などの環境対策を目的とした
フロン、トリクロロエタン等の代替洗浄剤を用いて材料
表面を洗浄した際の洗浄性を評価するのに適した、金
属、ガラス及びセラミックス材料表面の油性汚れ測定方
法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for measuring oily dirt on the surface of a metal, glass or ceramics material to measure the oily dirt on the surface and confirming the cleaning quality. The present invention relates to a method for measuring oily stains on the surface of metal, glass and ceramic materials, which is suitable for evaluating the cleanability when the surface of the material is cleaned using an alternative cleaning agent such as CFCs and trichloroethane for the purpose of environmental protection. .
【０００２】[0002]
【従来技術】金属、ガラス及びセラミックスなどの材料
表面の洗浄において、洗浄性の確認には種々の方法が用
いられていた。通常、これらの材料表面の油性汚れの測
定は、試料を四塩化炭素などの溶剤中に浸漬し、油分を
抽出して、溶剤中の油分濃度を赤外吸光度計で測定する
方法（ＪＩＳ−Ｋ０１０２）や、抽出後ガスクロマトグ
ラフ分析する方法、小面積に切断して表面炭素分析装置
（ＬＥＣＯ社製等）を使用し、酸素ガス中で表面油分を
燃焼させて赤外吸光度からＣＯ2濃度を分析する方法な
どがある。2. Description of the Related Art In cleaning the surface of materials such as metal, glass and ceramics, various methods have been used to confirm the cleaning property. Usually, the oily stain on the surface of these materials is measured by immersing the sample in a solvent such as carbon tetrachloride, extracting the oil content, and measuring the oil content concentration in the solvent with an infrared absorption meter (JIS-K0102). ) Or a method for gas chromatographic analysis after extraction, using a surface carbon analyzer (made by LECO, etc.) by cutting into a small area, and burning the surface oil in oxygen gas to analyze the CO 2 concentration from infrared absorption. There are ways to do it.
【０００３】また、高価な装置を必要としない簡易測
定、判定法としては、水洗後に水漏れする場合は清浄で
あるとする水漏れ性判定法や、特開昭６３−７３１４０
号公報に開示される方法が使用されている。特開昭６３
−７３１４０号公報に示される方法は、ガラス部品の表
面汚れ部位測定法であるが、蛍光染料の水溶液をガラス
表面に吹き付け、紫外線を照射して水漏れ部分（＝清浄
部分）をより明確に把握する方法で、水漏れ性判定によ
る方法の改良法といえる。Further, as a simple measurement and judgment method which does not require an expensive device, there is a water leak property judgment method which is clean when water leaks after washing, and JP-A-63-73140.
The method disclosed in the publication is used. JP 63
The method disclosed in Japanese Laid-Open Patent Publication No. 73140 is a method for measuring the surface dirt part of a glass part, but an aqueous solution of a fluorescent dye is sprayed onto the glass surface and irradiated with ultraviolet rays to more clearly grasp a water leak part (= clean part). It can be said that this is an improved method of judging the water leakage property.
【０００４】実際の洗浄現場における管理方法として
は、迅速かつ特殊な装置を必要としない簡易測定法が主
に要求されており、金属、ガラス及びセラミックスなど
の洗浄現場においては、高価な装置を使用することな
く、可能な限り短時間で洗浄品質を確認することが要求
されている。また、洗浄品質の確認は、単に油汚れが付
着しているか否かの確認のみではなく、汚れの付着量お
よび付着部位を、非破壊で容易に測定できることが必要
となっている。As a management method in an actual cleaning site, a quick and simple measuring method which does not require a special device is mainly required, and an expensive device is used in a cleaning site such as metal, glass and ceramics. It is required to check the cleaning quality in the shortest possible time without doing so. Further, the confirmation of the cleaning quality needs not only to confirm whether or not oil stains are attached, but also to be able to easily and non-destructively measure the attachment amount and attachment site of the stains.
【０００５】しかし、従来の赤外吸光度法など機器によ
る測定法では部位別の付着量を測定するためには試料を
部位ごとに切断したうえで測定しなければならず、現実
的な方法ではなかった。また、水漏れ部位で判定する簡
易法は、清浄部位の判定はできるが、定性的で汚れの付
着量等はほとんど判定できなかった。このように従来の
金属、ガラス及びセラミックスなどの洗浄において、被
洗浄部位、製品の洗浄品質を常に把握し、油性汚れの付
着量および部位を同時にかつ容易に判定、測定できる適
当な方法がなく、特に洗浄品質の管理が重要な水系洗浄
の現場を中心に油性汚れ測定方法の開発が強く求められ
ていた。However, in the conventional measuring method using a device such as the infrared absorption method, in order to measure the amount of adhesion of each part, the sample must be cut into each part and then measured, which is not a practical method. It was In addition, the simple method of judging by the water leakage part can judge the clean part, but it is qualitative, and the amount of adhered dirt or the like could hardly be judged. Thus, in the conventional cleaning of metals, glass, ceramics, etc., there is no suitable method for always grasping the cleaning target part, the cleaning quality of the product, and simultaneously determining and measuring the amount and part of the oily dirt adhered at the same time. In particular, there has been a strong demand for the development of a method for measuring oily stains, especially in the field of water-based cleaning where the control of cleaning quality is important.
【０００６】[0006]
【発明が解決しようとする課題】本発明は、洗浄現場に
おいて、金属、ガラス及びセラミックス材料表面の洗浄
において、被洗浄物の洗浄品質を常に把握でき、かつ容
易に判定、測定ができるような作業性に優れた油性汚れ
の測定方法を提供することを目的とするものである。DISCLOSURE OF THE INVENTION The present invention is intended for cleaning the surface of metal, glass and ceramic materials at a cleaning site so that the cleaning quality of an object to be cleaned can always be grasped and easily judged and measured. It is an object of the present invention to provide a method for measuring oily stains having excellent properties.
【０００７】[0007]
【課題を解決するための手段】本発明者は、上記課題を
解決するための手段について鋭意検討した結果、金属洗
浄の場合において、洗浄後の金属表面に水切り性、防錆
性を付与するため、長鎖脂肪酸等の単分子吸着膜を形成
した場合などには、油性汚れ付着量が非常に少ないにも
かかわらず、全く水漏れしない現象が見られることなど
から、従来の洗浄後の水漏れ面積を測定して洗浄性を判
定する方法、またはこれに準ずる方法では、油性汚れの
付着量を定量的に把握できないとの結論を得るに至っ
た。Means for Solving the Problems As a result of earnest studies on means for solving the above problems, the present inventors have found that in the case of metal cleaning, the metal surface after cleaning is provided with drainage property and rust preventive property. When a monomolecular adsorption film such as long-chain fatty acid is formed, there is a phenomenon that water does not leak at all, even though the amount of oily dirt adhered is very small. We have come to the conclusion that the amount of oily dirt adhering cannot be quantitatively grasped by the method of measuring the area and determining the cleanability, or a method based on this.
【０００８】そこで本発明者は、試料を染色液中に浸漬
し、油性汚れそのものを染料、顔料等によって染色処理
し、処理後に染色液を水で洗い落とす方法により汚れ部
位の判定および汚れ付着量の測定ができないかという着
想のもとに種々の染色剤、溶剤の検討を行った。その結
果、一般的な水溶性染料を水に溶解した染色液では油性
汚れの染色性が悪く、実用化できないのに対して、水溶
性がほとんどなく、油に対する親和性の高い非イオン性
染料（油溶染料、分散染料など）を脂肪族低級アルコー
ルなどの水に対する相溶性をもつ有機溶剤に溶解した染
色液を使用すると、油性汚れ中に染料が抽出され、汚れ
が少量でもきわめて高い着色度が得られ、目視で判定可
能であることを新たに見い出した。さらに本発明者は、
カラーアナライザーを用いて、着色度（色差）と油性汚
れ付着量との相関性が極めて高く、かつ各種の油に対し
ても汚れ付着量の測定が可能であることを確認して本発
明を完成するに至ったのである。Therefore, the inventor of the present invention dipped the sample in a dyeing solution, dyeing the oily stain itself with a dye, a pigment, etc., and then washing the dyeing solution with water after the treatment to determine the stain site and determine the amount of stain adhesion. Various dyes and solvents were examined based on the idea that measurement could not be performed. As a result, a dyeing solution in which a general water-soluble dye is dissolved in water has poor dyeing properties for oily stains and cannot be put to practical use, whereas it has almost no water-solubility and has a high affinity for oils. When a dyeing solution prepared by dissolving (oil-soluble dye, disperse dye, etc.) in an organic solvent that is compatible with water such as aliphatic lower alcohol is used, the dye is extracted into oily stains, and even with a small amount of stains, extremely high coloring degree can be obtained. It was newly found that it was obtained and can be visually determined. Furthermore, the inventor
The present invention was completed by confirming that the degree of coloration (color difference) and the amount of oily stain adherence are extremely highly correlated with a color analyzer and that the amount of stain adherence can be measured for various oils. It came to do.
【０００９】即ち、本発明は（ａ）非イオン性染料、
０．００５重量％以上、１０重量％未満と、（ｂ）炭素
数１〜５の脂肪族アルコール、脂肪族ケトン、グリコー
ル、グリコールエーテル及び環状エーテルの群から選ば
れる少なくとも１種の溶剤、５重量％以上、９９．９重
量％未満と、（ｃ）水、残部とからなる試験液に、被測
定材料表面を接触させた後直ちに水洗し、該表面の着色
濃度から油性汚れの付着量を測定又は付着部位を判定す
ることを特徴とする、金属、ガラス及びセラミックス材
料表面の油性汚れ測定方法を提供する。That is, the present invention comprises (a) a nonionic dye,
0.005% by weight or more and less than 10% by weight, and (b) at least one solvent selected from the group consisting of aliphatic alcohols having 1 to 5 carbon atoms, aliphatic ketones, glycols, glycol ethers and cyclic ethers, 5% by weight. % Or more and less than 99.9% by weight, (c) contacting the surface of the material to be measured with a test liquid consisting of water and the balance, and then immediately rinsing with water, and measuring the amount of oily stain adhered from the coloring density of the surface. Alternatively, there is provided a method for measuring oily stains on surfaces of metal, glass and ceramic materials, which is characterized by determining an adhesion site.
【００１０】以下本発明を詳細に説明する本発明におい
て、染料は各種染料のうち、非イオン性の構造を有する
染料のみを使用することができる。 （ａ）非イオン性染料は、水に殆ど不溶性で油脂汚れに
溶解し易い特性を有するため、本発明を構成するための
必須条件である。従って、一般に多く使用されている、
分子構造中にアミノ基や置換アミノ基を有する塩基性染
料や、スルホン酸基やカルボキシル基を有する酸性染
料、酸性媒染染料等は、イオン性を有するため水に溶け
易く、本発明では使用できない。In the present invention, which will be described in detail below, among the various dyes, only the dye having a nonionic structure can be used as the dye. The non-ionic dye (a) is an indispensable condition for constituting the present invention because it has a property of being almost insoluble in water and easily dissolved in oil and fat stains. Therefore, it is commonly used,
Basic dyes having an amino group or a substituted amino group in the molecular structure, acidic dyes having a sulfonic acid group or a carboxyl group, acidic mordant dyes and the like have ionic properties and thus are easily soluble in water and cannot be used in the present invention.
【００１１】（ａ）非イオン性染料の中では、スダンレ
ッド、オイルレッド、バターイエロー、オイルブラウン
などの油溶染料及びディスパーズレッド、ディスパーズ
ファーストピンク、ディスパーズポリエステルオレンジ
などの分散染料が油溶性が高いので特に好ましい。本発
明で使用される（ａ）非イオン性染料は、染色液中に
０．００５重量％以上１０重量％未満含有することが必
要で、０．００５重量％未満では着色が不十分で、１０
重量％を超えると全量が溶解せず沈殿を生じるため使用
できない。(A) Among the nonionic dyes, oil-soluble dyes such as Sudan red, oil red, butter yellow and oil brown, and disperse dyes such as Dispers red, Dispers fast pink and Dispers polyester orange are oil-soluble. Is particularly preferable because of high value. The (a) nonionic dye used in the present invention must be contained in the dyeing solution in an amount of 0.005% by weight or more and less than 10% by weight, and if less than 0.005% by weight, coloring is insufficient.
If it exceeds 5% by weight, it cannot be used because the whole amount does not dissolve and precipitates.
【００１２】本発明で使用する（ｂ）溶剤として、炭素
数が１〜５の脂肪族アルコール、脂肪族ケトン、グリコ
ール、グリコールエーテル、及び環状エーテルの群から
選ばれる少なくとも１種を含むことが必要である。これ
らの有機溶剤の中では、特に脂肪族アルコールとして
は、エタノール、メタノール、プロピルアルコール等、
ケトン類としてはアセトン、イソブチルケトン等、グリ
コール類としてはエチレングリコール等、グリコールエ
ーテルとしてはジエチレングリコールジメチルエーテル
等、環状エーテルとしてはジオキサン、ジオキソラン等
が好ましい。また、必要に応じてこれらを混合使用する
ことも可能である。炭素数５をこえる脂肪族アルコール
では、油性が高いため水との相溶性が悪く、染料が油汚
れに移行しにくい。The solvent (b) used in the present invention must contain at least one selected from the group consisting of aliphatic alcohols having 1 to 5 carbon atoms, aliphatic ketones, glycols, glycol ethers, and cyclic ethers. Is. Among these organic solvents, especially as aliphatic alcohol, ethanol, methanol, propyl alcohol, etc.,
Preferred ketones are acetone, isobutyl ketone, etc., glycols are ethylene glycol, etc., glycol ethers are diethylene glycol dimethyl ether, etc., and cyclic ethers are preferably dioxane, dioxolane, etc. Moreover, it is also possible to mix and use these as needed. An aliphatic alcohol having more than 5 carbon atoms has high oiliness and thus has poor compatibility with water, and the dye is less likely to transfer to oil stains.
【００１３】（ｂ）溶剤は、これらの有機溶剤のうち少
なくとも１種を５重量％以上、９９．９重量％未満含む
ことが必要であり、５重量％未満では染料が溶解しな
い。通常、４０〜９５重量％の範囲が最も好ましい。な
お、試験液（染料液）の他の（ａ）及び（ｂ）以外の成
分は（ｃ）水であることが必要である。また、測定が可
能な被測定材料は、鉄、ステンレス、アルミニウム、銅
などの金属の他、ガラス及びセラミックス等の無機材料
が挙げられる。ただし、合成樹脂、化学繊維等、又は表
面が樹脂等で被覆された金属等の場合には、これらの表
面が清浄であっても染色されてしまうことがあるため、
これらの材料には適用できない。The solvent (b) must contain at least one of these organic solvents in an amount of 5% by weight or more and less than 99.9% by weight, and if less than 5% by weight, the dye will not dissolve. Usually, the range of 40 to 95% by weight is most preferable. The components other than (a) and (b) of the test liquid (dye liquid) must be (c) water. The measurable materials to be measured include metals such as iron, stainless steel, aluminum and copper, and inorganic materials such as glass and ceramics. However, in the case of synthetic resin, chemical fiber, etc., or metal whose surface is coated with resin etc., it may be dyed even if these surfaces are clean,
Not applicable to these materials.
【００１４】また、試料を試験液に接触させる方法とし
ては液中に試料全体を浸漬して静置する方法が適してお
り、強い撹拌等は好ましくない。試験液の温度は室温が
適しており、５０℃以上の高い温度では溶剤分の蒸発を
促進するため好ましくない。また、試験液との接触時間
は５秒〜６０秒程度が適している。Further, as a method of bringing the sample into contact with the test solution, a method of immersing the whole sample in the solution and leaving it still is suitable, and strong stirring and the like are not preferable. Room temperature is suitable for the temperature of the test liquid, and a high temperature of 50 ° C. or higher promotes evaporation of the solvent component, which is not preferable. Further, the contact time with the test solution is preferably about 5 seconds to 60 seconds.
【００１５】本発明方法では試験液による処理後にただ
ちに水洗し、水切り又は乾燥後に着色の程度から油の付
着部位及び付着量を判定する必要がある。水洗は水道水
等の清浄な水で行い、溜水の中でゆるやかに揺動しなが
ら行う方法を用いるのがより望ましい。In the method of the present invention, it is necessary to wash immediately with water after treatment with the test solution, and to determine the oil adhesion site and the oil adhesion amount from the degree of coloring after draining or drying. It is more preferable to use a method of washing with clean water such as tap water and gently shaking in the accumulated water.
【００１６】着色の程度及び油の付着量の判定は、目視
で行う場合には、あらかじめ使用している油で付着量の
判明している汚れが付着した標準板を作成しておき、こ
れを同一条件で処理したものと比較判定して行う。ま
た、より正確に測定したい場合は色差計で色差を測定し
て汚れ付着量を算出する。When the degree of coloring and the amount of oil adhered are judged by visual inspection, a standard plate on which stains of which the amount adhered is known to have been adhered is prepared in advance and used. It is performed by comparing and judging with those processed under the same conditions. If more accurate measurement is required, the color difference is measured with a color difference meter to calculate the amount of dirt attached.
【００１７】[0017]
【作用】本発明における金属、ガラス及びセラミックス
材料表面の油性汚れ測定方法の原理は、非イオン性染料
分子の油に対する溶解度が、水やアルコール等に対する
溶解度に比較してはるかに高い性質を有すること、即ち
特定染料の油に対する分配係数の大なることを利用した
もので、この試験液（染色液）に浸漬した直後から染料
分子はアルコール等を含む水相から、油性汚れを含む油
相中へ速やかに移行する。このため染料は、油性汚れ
（油相）の中に速やかに濃縮され、試験液（水−アルコ
ール相）中の濃度よりもはるかに高濃度となり、油汚れ
が少量でも肉眼ではっきり認められるほど明瞭に着色す
るものと考えられる。The principle of the method for measuring oily stains on the surface of metal, glass and ceramic materials in the present invention is that the solubility of nonionic dye molecules in oil is much higher than that in water, alcohol and the like. That is, the fact that the partition coefficient of a specific dye with respect to oil is large is used. Immediately after being immersed in this test liquid (dyeing liquid), the dye molecules are transferred from the aqueous phase containing alcohol etc. to the oil phase containing oily stains. Move quickly. For this reason, the dye is rapidly concentrated in oily soil (oil phase) and has a much higher concentration than that in the test liquid (water-alcohol phase), and even a small amount of oil stain is clearly visible to the naked eye. It is thought to be colored.
【００１８】[0018]
【実施例】以下に実際の測定方法についていくつかの実
施例を比較例とともに挙げ、本発明の内容をより具体的
に説明する。 実施例１〜１４及び比較例１〜６ 試験に使用した試験板の材質を表１に、染料の種類を表
２に、溶剤の種類を表３に示した。また、表４と表５に
試験１の方法で評価した実施例１〜１４、及び比較例１
〜６での色差を測定した結果を示す。EXAMPLES The contents of the present invention will be described more specifically below by giving some examples of actual measuring methods together with comparative examples. Examples 1 to 14 and Comparative Examples 1 to 6 Table 1 shows the materials of the test plates used in the tests, Table 2 shows the types of dyes, and Table 3 shows the types of solvents. Further, Examples 1 to 14 evaluated by the method of Test 1 in Tables 4 and 5 and Comparative Example 1
The result of having measured the color difference in ~ 6 is shown.
【００１９】（試験１）試験板表面を四塩化炭素で十分
に脱脂した後、アセトンで希釈した防錆油をロールコー
ターで均一に塗布し、乾燥後の油分付着量が約５００ｍ
ｇ／ｍ2となる試験板を作製した。塗布、乾燥後の試験
板は、表４および表５の実施例および比較例に示した条
件の試験液（２５℃）に３０秒間浸漬したのち、ビーカ
ーに溜めた水に速やかに移し、１０秒間水洗した。処理
後の試験板は温風で乾燥した後、カラーアナナイザー
（東京電色（株）製：ＴＣ−１８００型）を使用して色
の濃度（色差：ΔＥ）を測定し、着色の程度を測定し
た。各種素材のうち、ガラスについては透過光で、他の
素材は反射光で測定した。(Test 1) After thoroughly degreasing the surface of the test plate with carbon tetrachloride, rust preventive oil diluted with acetone was uniformly applied with a roll coater, and the amount of oil adhered after drying was about 500 m.
A test plate with g / m 2 was prepared. The test plate after coating and drying was immersed in a test liquid (25 ° C.) under the conditions shown in Examples and Comparative Examples of Tables 4 and 5 for 30 seconds, and then rapidly transferred to water stored in a beaker for 10 seconds. Washed with water. The test plate after the treatment was dried with warm air, and then the color density (color difference: ΔE) was measured using a color analyzer (manufactured by Tokyo Denshoku Co., Ltd .: TC-1800 type) to determine the degree of coloring. It was measured. Of the various materials, the glass was measured with transmitted light, and the other materials were measured with reflected light.
【００２０】（試験２）実施例のうち代表的なものにつ
いて、汚れの付着量と色の濃度（色差）との関係を調べ
た。試験板は試験１と同様に脱脂した鋼板（Ａ）を使用
し、これに油の濃度を５０、２０、１０、５、２％と段
階的に変えてアセトンで希釈した油をロールコートし、
４８時間自然乾燥したものを使用した。油の付着量の確
認は、表面炭素分析装置（ＬＥＣＯ社製：ＲＣ−２１２
型）で表面の有機カーボン付着量（ｍｇ／ｍ2）として
測定した。試験液は実施例１、４及び比較例１の組成の
ものを使用した。表面の油汚れ付着量と着色濃度（色
差）との関係を図１に示した。(Test 2) With respect to a typical example among the examples, the relationship between the amount of adhered dirt and the color density (color difference) was examined. As the test plate, the degreased steel plate (A) was used in the same manner as in Test 1, and the oil concentration was changed stepwise to 50, 20, 10, 5, 2% and roll-coated with oil diluted with acetone,
What was naturally dried for 48 hours was used. The amount of oil adhered is confirmed by a surface carbon analyzer (LE-CO: RC-212).
It was measured as the amount of organic carbon adhered on the surface (mg / m 2 ) with a mold. The test liquids having the compositions of Examples 1 and 4 and Comparative Example 1 were used. The relationship between the amount of oil stains on the surface and the coloring density (color difference) is shown in FIG.
【００２１】実施例１〜１４及び比較例１〜６、さらに
図１から次のことが言える。 実施例１〜１４では少量の油汚れの付着でも、十分高
い着色度（色差）が得られ目視でも判別が容易である。
染料としてメチレンブルー（塩基性染料）を用いた比
較例１、溶剤としてジエチルエーテルを用いた比較例
２、溶剤として四塩化炭素を用いた比較例３、染料とし
てマラカイトグリーン（塩基性染料）を用いた比較例
４、染料としてアルザリンレッドＳ（酸性染料）を用
い、かつ溶剤としてジエチルエーテルを用いた比較例５
及び染料としてメチルオレンジ（酸性染料）を用い、か
つ溶剤を使用しなかった比較例６では、着色は殆ど得ら
れず、色差が１未満である。色差が１未満では肉眼での
色の判別は困難であることから、少量の油汚れの判別は
不可能である。 また、図１示すように、本発明の方法による油汚れの
付着量と着色の濃さ（色差）との相関は、比例関係を示
し、着色度から汚れの付着量を定量することも十分可能
である。The following can be said from Examples 1 to 14 and Comparative Examples 1 to 6 and FIG. In Examples 1 to 14, even if a small amount of oil stain is attached, a sufficiently high degree of coloring (color difference) can be obtained, and it is easy to visually identify.
Comparative Example 1 using methylene blue (basic dye) as a dye, Comparative Example 2 using diethyl ether as a solvent, Comparative Example 3 using carbon tetrachloride as a solvent, and Malachite Green (basic dye) was used as a dye. Comparative Example 4, Comparative Example 5 using Alzarin Red S (acidic dye) as a dye and diethyl ether as a solvent
Further, in Comparative Example 6 in which methyl orange (acidic dye) was used as the dye and no solvent was used, almost no coloring was obtained and the color difference was less than 1. If the color difference is less than 1, it is difficult to discriminate colors with the naked eye, and therefore it is impossible to discriminate a small amount of oil stains. Further, as shown in FIG. 1, the correlation between the amount of oil stain adhered by the method of the present invention and the color depth (color difference) shows a proportional relationship, and it is sufficiently possible to quantify the amount of stain adhered from the degree of coloring. Is.
【００２２】[0022]
【発明の効果】以上で説明したように本発明の、金属、
ガラス及びセラミックス材料表面の油性汚れ測定方法を
用いれば、これらの素材の洗浄現場等において従来の方
法では得られなかった、より厳密で作業性に優れた品質
測定及び管理が可能となる。ことに中小規模の一般的な
洗浄装置を、従来のフロン、トリクロロエタン等の溶剤
から水系洗浄などの代替システムへ変更する場合には大
きな効果が期待できる。As described above, the metal of the present invention,
By using the method for measuring oily stains on the surfaces of glass and ceramic materials, it becomes possible to perform more rigorous and excellent workability quality measurement and control that cannot be obtained by conventional methods at the cleaning site of these materials. In particular, a large effect can be expected when a general small-to-medium-sized general cleaning device is changed from a conventional solvent such as CFC or trichloroethane to an alternative system such as an aqueous cleaning.
【００２３】[0023]
【表１】 [Table 1]
【００２４】[0024]
【表２】 [Table 2]
【００２５】[0025]
【表３】 [Table 3]
【００２６】[0026]
【表４】 [Table 4]
【００２７】[0027]
【表５】 [Table 5]
【図１】色差（ΔＥ）と油分付着量との関係を示した図
である。FIG. 1 is a diagram showing a relationship between a color difference (ΔE) and an oil amount attached.
Claims (1)
％以上、１０重量％未満と、（ｂ）炭素数１〜５の脂肪
族アルコール、脂肪族ケトン、グリコール、グリコール
エーテル及び環状エーテルの群から選ばれる少なくとも
１種の溶剤、５重量％以上、９９．９重量％未満と、
（ｃ）水、残部とからなる試験液に、被測定材料表面を
接触させた後直ちに水洗し、該表面の着色度から油性汚
れの付着量を測定、又は付着部位を判定することを特徴
とする、金属、ガラス及びセラミックス材料表面の油性
汚れ測定方法。1. (a) a nonionic dye, 0.005% by weight or more and less than 10% by weight, and (b) an aliphatic alcohol having 1 to 5 carbon atoms, an aliphatic ketone, a glycol, a glycol ether or a cyclic ether. At least one solvent selected from the group of 5% by weight or more and less than 99.9% by weight,
(C) A test liquid consisting of water and the rest is brought into contact with the surface of the material to be measured, and then immediately washed with water, and the amount of oily soil adhered is measured or the adhered site is determined from the degree of coloring of the surface. A method for measuring oily dirt on the surface of metal, glass and ceramic materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8623595A JPH08261956A (en) | 1995-03-17 | 1995-03-17 | Oily stain measuring method for metal, glass, and ceramic material surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8623595A JPH08261956A (en) | 1995-03-17 | 1995-03-17 | Oily stain measuring method for metal, glass, and ceramic material surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08261956A true JPH08261956A (en) | 1996-10-11 |
Family
ID=13881141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8623595A Pending JPH08261956A (en) | 1995-03-17 | 1995-03-17 | Oily stain measuring method for metal, glass, and ceramic material surface |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08261956A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100797260B1 (en) * | 2005-12-26 | 2008-01-23 | 주식회사 포스코 | Method for measuring oil layer of strip |
-
1995
- 1995-03-17 JP JP8623595A patent/JPH08261956A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100797260B1 (en) * | 2005-12-26 | 2008-01-23 | 주식회사 포스코 | Method for measuring oil layer of strip |
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