JP3290507B2 - Method for measuring coating weight of coated metal plate - Google Patents
Method for measuring coating weight of coated metal plateInfo
- Publication number
- JP3290507B2 JP3290507B2 JP14967493A JP14967493A JP3290507B2 JP 3290507 B2 JP3290507 B2 JP 3290507B2 JP 14967493 A JP14967493 A JP 14967493A JP 14967493 A JP14967493 A JP 14967493A JP 3290507 B2 JP3290507 B2 JP 3290507B2
- Authority
- JP
- Japan
- Prior art keywords
- metal plate
- coating film
- tin
- epoxy resin
- weight
- 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 - Fee Related
Links
Landscapes
- Sampling And Sample Adjustment (AREA)
- Investigating And Analyzing Materials By Characteristic Methods (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、エポキシ樹脂塗膜付き
ティンフリースチールを製造する工程において、ティン
フリースチール表面のエポキシ樹脂塗膜量を重量によっ
て管理するため、エポキシ樹脂塗膜重量を測定する方法
に関する。The present invention relates, with epoxy resin coating
In the process of manufacturing tin-free steel , tin
The present invention relates to a method for measuring the weight of an epoxy resin coating in order to control the amount of an epoxy resin coating on a free steel surface by weight.
【０００２】[0002]
【従来の技術】一般に、塗膜付き金属板表面の塗膜重量
の測定は、電解法によっている。図２はこの方法の概念
図で、（ａ）は電気分解開始前、（ｂ）は終了後を示
す。11は電解槽、12は電解液、13は陰極（金属板）、14
は塗膜、14' は剥離後の塗膜、15は陽極（カーボン）、
16は電源である。2. Description of the Related Art Generally, the weight of a coating film on the surface of a metal plate with a coating film is measured by an electrolytic method. 2A and 2B are conceptual diagrams of this method, in which FIG. 2A shows a state before the start of electrolysis and FIG. 11 is an electrolytic cell, 12 is an electrolytic solution, 13 is a cathode (metal plate), 14
Is the coating, 14 'is the coating after peeling, 15 is the anode (carbon),
16 is a power supply.
【０００３】電解槽11に電解液12を入れ、液中に塗膜14
の付いている金属板13を浸漬し、金属板13を陰極として
電気分解を行うと、陰極である金属板13の表面から水素
ガスが発生し、金属板13の表面と塗膜14との間に空間を
形成されて塗膜14が剥離するから、この剥離した塗膜1
4' を取り出して乾燥させた後重量を測定するのであ
る。[0003] An electrolytic solution 12 is placed in an electrolytic bath 11 and a coating film 14 is immersed in the electrolytic solution.
When the metal plate 13 is immersed and electrolysis is performed using the metal plate 13 as a cathode, hydrogen gas is generated from the surface of the metal plate 13 serving as a cathode, and the hydrogen gas is generated between the surface of the metal plate 13 and the coating film 14. A space is formed in the coating film 14 and the coating film 14 is peeled off.
The 4 'is taken out, dried and weighed.
【０００４】しかし、このような電解剥離法では、塗膜
を剥離するのに 1 A/dm2の電流で10分程度を要し、ま
た、塗膜剥離時に金属板表面上の異物も塗膜中に取り込
まれるため誤差を生じ易い。また、塗料密着性のよいク
ロムめっき鋼板の一種であるティンフリースチールなど
の場合、塗膜が連続して剥離しないで部分的に細かい小
片となって剥離し、こうした小片の重量を合計するため
にさらに測定精度が悪くなるという問題もあった。However, in such an electrolytic stripping method, it takes about 10 minutes at a current of 1 A / dm 2 to peel off the coating film, and foreign matter on the metal plate surface is also removed when the coating film is peeled off. Errors tend to occur because they are taken in. In addition, in the case of tin-free steel, which is a type of chrome-plated steel sheet with good paint adhesion, the coating film does not peel off continuously but peels off in small pieces, and the total weight of these pieces is calculated. Further, there is a problem that the measurement accuracy is deteriorated.
【０００５】[0005]
【発明が解決しようとする課題】本発明は、上記のごと
き問題点を解消し、能率的で精度のよい塗膜重量の測定
方法を実現することを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to solve the above problems and to realize an efficient and accurate method for measuring the weight of a coating film.
【０００６】[0006]
【課題を解決するための手段】本発明者らは、適切な溶
解液を選定することによって、塗膜は溶解せず、金属板
のみを溶解させることができることに着目し、本発明を
完成するに至った。 すなわち、本発明は、塗膜付き金属
板表面の塗膜重量を測定する方法において、 この塗膜付
き金属板がエポキシ樹脂塗膜付きティンフリースチール
であり、エポキシ樹脂塗膜付きティンフリースチールを
ティンフリースチールのみを溶解する溶解液に浸漬して
ティンフリースチールを溶解し、 残留物であるエポキシ
樹脂塗膜重量を測定することを特徴とする塗膜付き金属
板の塗膜重量測定方法である。Means for Solving the Problems The present inventors have focused on the fact that by selecting an appropriate dissolving solution, it is possible to dissolve only the metal plate without dissolving the coating film, and complete the present invention. Reached. That is, the present invention provides a method for measuring the weight of a coating film on the surface of a metal plate with a coating film, wherein the metal plate with a coating film is tin-free steel with an epoxy resin coating film.
And tin-free steel with epoxy resin coating
Immerse in a solution that dissolves only tin-free steel
Melts tin-free steel and leaves epoxy as residue
This is a method for measuring the weight of a coated metal plate, which comprises measuring the weight of a resin coating.
【０００７】[0007]
【作 用】本発明によれば、ティンフリースチールを溶
解させてしまうので、電解法と異なり水素ガスの発生も
なく、密着性のよいエポキシ樹脂塗膜でも連続したフィ
ルム状に剥離させることができ、測定精度が高い。 ま
た、剥離に要する時間も、ティンフリースチールの厚み
にもよるが従来の電解法に比べて半分以下であり、能率
的である。さらに、従来エポキシ樹脂塗膜に取り込まれ
ていた金属粉、スマッジ等の異物はティンフリースチー
ルとともに溶解し、エポキシ樹脂塗膜重量には入ってこ
ないから、測定精度は一層高いものとなっている。According to the present invention, tin-free steel is dissolved, so that unlike the electrolytic method, no hydrogen gas is generated, and even an epoxy resin coating film having good adhesion can be peeled into a continuous film. , Measurement accuracy is high. Also, the time required for peeling depends on the thickness of the tin-free steel , but is less than half that of the conventional electrolytic method, which is efficient. Further, the conventional epoxy resin coating film captured have metallic powder foreign matter such as smudge Tin fleece Qi
Since it dissolves with the epoxy resin and does not enter the weight of the epoxy resin coating film, the measurement accuracy is higher.
【０００８】[0008]
【実施例】本発明の一実施例を図１に示す。 １は溶解
槽、２は溶解液、 ３は金属板、４は塗膜である。（ａ）
のように、溶解槽１に溶解液２を入れ、 この液中に塗膜
４の付いている金属板３を浸漬させる。溶解液２として
は濃度36％、温度50〜90℃の熱塩酸を使用した。 また、
金属板３は厚さ0.17〜0.32mmのティンフリースチール、
塗膜４はエポキシ樹脂である。およそ３分経過後、
（ｂ）のように金属板３が溶解して塗膜４が完全に剥離
する。FIG. 1 shows an embodiment of the present invention. 1 is a dissolving tank, 2 is a dissolving solution, 3 is a metal plate, and 4 is a coating film. (A)
The dissolving solution 2 is put in the dissolving tank 1 as described above, and the metal plate 3 with the coating film 4 is immersed in this solution. As the dissolution solution 2, hot hydrochloric acid having a concentration of 36% and a temperature of 50 to 90 ° C. was used. Also,
Metal plate 3 is 0.17-0.32mm thick tin-free steel,
The coating film 4 is an epoxy resin. After about 3 minutes,
As shown in (b), the metal plate 3 is dissolved and the coating film 4 is completely peeled off.
【０００９】同一条件で塗装した塗装面積 100dm2 の試
料各10点について、電解法と、本実施例による溶解法に
よりエポキシ樹脂塗膜重量を測定した結果を表１に示
す。Table 1 shows the results of measuring the weight of the epoxy resin coating film by the electrolysis method and the dissolution method according to the present embodiment for each of 10 samples having a coating area of 100 dm 2 coated under the same conditions.
【００１０】[0010]
【表１】 [Table 1]
【００１１】表１に見られるように、両法による平均値
はほとんど変わらないが、測定値の範囲（最大値−最小
値）、標準偏差σともに本発明の方がデータのばらつき
が半分以下に減少しており、測定精度が大幅に向上して
いることがわかる。なお、この実施例では溶解液として
熱塩酸を用いたが、本発明の溶解液はこれに限定される
ものではなく、例えば硝酸など、金属板であるティンフ
リースチールを溶解するが塗膜であるエポキシ樹脂塗膜
とは反応しないものであればいかなるものでもよい。As can be seen from Table 1, the average value obtained by the two methods hardly changes, but the variation of the data in the present invention is less than half in both the range of the measured value (maximum value-minimum value) and the standard deviation σ. It can be seen that the measurement accuracy has been greatly improved. In this example, hot hydrochloric acid was used as the dissolving solution. However, the dissolving solution of the present invention is not limited to this, and for example , a tin plate made of a metal plate such as nitric acid.
Any material can be used as long as it dissolves lead steel but does not react with the epoxy resin coating film .
【００１２】ところで、本発明では主としてエポキシ樹
脂塗膜のない露出面側からティンフリースチールを溶解
させてエポキシ樹脂塗膜を分離するので、薄鋼板に片面
塗装を施した缶詰用鋼板の塗装試験片等に適用すれば、
きわめて効果的である。In the present invention, an epoxy resin is mainly used.
Since the no exposed surface side of fat coating by dissolving the tin-free steel separating epoxy resin coating, if applied to the coated test piece or the like canned steel plate subjected to one side painted steel sheet,
Extremely effective.
【００１３】[0013]
【発明の効果】本発明によれば、直流電源などの電気設
備が不要であり、能率的でかつ精度のよいエポキシ樹脂
塗膜重量の測定方法が実現するというすぐれた効果があ
る。According to the present invention, there is no need for electrical equipment such as a DC power supply, and there is an excellent effect that an efficient and accurate method for measuring the weight of an epoxy resin coating film is realized. .
【図１】本発明の実施例を示す概念図である。FIG. 1 is a conceptual diagram showing an embodiment of the present invention.
【図２】従来の技術を示す概念図である。FIG. 2 is a conceptual diagram showing a conventional technique.
１ 溶解槽 ２ 溶解液 ３ 金属板（ティンフリースチール） ４ 塗膜（エポキシ樹脂塗膜） 11 溶解槽 12 溶解液 13 陰極 14、14' 塗膜 15 陽極 16 電源1 Dissolution tank 2 Dissolution liquid 3 Metal plate (tin-free steel) 4 Coating (epoxy resin coating) 11 Dissolution tank 12 Dissolution 13 Cathode 14, 14 'Coating 15 Anode 16 Power supply
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭60−3548（ＪＰ，Ａ) 特開 平４−49040（ＪＰ，Ａ) 特開 昭60−235040（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) G01N 5/04 G01G 17/00 ＪＩＣＳＴファイル（ＪＯＩＳ)────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-60-3548 (JP, A) JP-A-4-49040 (JP, A) JP-A-60-235040 (JP, A) (58) Field (Int.Cl. 7 , DB name) G01N 5/04 G01G 17/00 JICST file (JOIS)
Claims (1)
る方法において、 この塗膜付き金属板がエポキシ樹脂塗
膜付きティンフリースチールであり、前記エポキシ樹脂
塗膜付きティンフリースチールをティンフリースチール
のみを溶解する溶解液に浸漬してティンフリースチール
を溶解し、 残留物であるエポキシ樹脂塗膜重量を測定す
ることを特徴とする塗膜付き金属板の塗膜重量測定方
法。A method for measuring the weight of a coating film on the surface of a metal plate with a coating film, wherein the metal plate with a coating film is coated with an epoxy resin.
Tin-free steel with membrane, epoxy resin
Characterized in that the coating with tin-free steel by immersion in solution which dissolves the tin-free steel <br/> only dissolve the tin-free steel <br/>, measuring the epoxy resin coating weight is the residue A method for measuring the weight of a coated metal plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14967493A JP3290507B2 (en) | 1993-06-22 | 1993-06-22 | Method for measuring coating weight of coated metal plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14967493A JP3290507B2 (en) | 1993-06-22 | 1993-06-22 | Method for measuring coating weight of coated metal plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0712702A JPH0712702A (en) | 1995-01-17 |
| JP3290507B2 true JP3290507B2 (en) | 2002-06-10 |
Family
ID=15480357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14967493A Expired - Fee Related JP3290507B2 (en) | 1993-06-22 | 1993-06-22 | Method for measuring coating weight of coated metal plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3290507B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101141419B1 (en) | 2010-07-29 | 2012-05-04 | 삼성전기주식회사 | Dissolution property measurement system using piezoelectric sensor |
| JP6061393B2 (en) * | 2013-09-17 | 2017-01-18 | 公益財団法人鉄道総合技術研究所 | Degradation state evaluation apparatus, deterioration state evaluation method, and deterioration state evaluation program |
| CN104048895B (en) * | 2013-11-18 | 2016-02-17 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of assay method of titanium dioxide surface hydroxy radical content |
| CN110873672B (en) * | 2018-08-30 | 2022-09-09 | 西部超导材料科技股份有限公司 | Method for measuring copper ratio of WIC (Wireless Fidelity) inlaid wire |
-
1993
- 1993-06-22 JP JP14967493A patent/JP3290507B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0712702A (en) | 1995-01-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |