A name plate used etching |
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PURPOSE |
The process of learning electrolysis. We can manufacture something in a chemical domain. |
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TARGET |
The junior high school second, the third grade |
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CATEGORY |
Chemistry and manufacture |
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< Production of the copper name plate > Need ①Electrolysis |
(1)Copper plate (thickness: 5mm)…2 |
(2) Na2SO4 (0.1mol/L)…25mL |
(3) Sulfuric acid |
(4)Transfer sheet (Press-n-Peel America Techniks company) |
(5)A laser printer |
(6)Household pressing iron |
(7)Polishing agent for metal |
(8) Alkali manganese dry cell ,size D …2 |
(9) Electrolysis cell |
(10)Bamboo skewer |
(11)Clip…2 |
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Fig.1 used copper plate |
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②The formation of the alloy |
(1)Tweezers |
(2)Hotplate or gas stove |
(3) Electrolytic solution Show mass per electrolyte 1L ・ZnSO4・7H2O …300g ・NH4Cl …18g ・Al2 (SO4)3 …37g ・H3BO3 ...30g |
(4)Zinc plate (thickness: 0.5mm) …1 |
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Fig.2 used zinc plate |
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Production process ①Electrolysis |
(1) Wash the surface of the copper plate using cleanser and remove sebum. |
(2) Next, fix a transfer sheet to the copper plate. |
(3) A copper plate (being the name plate) is an anode. Another is a cathode. And we perform electrolysis at 3V for 15 minutes. |
(4) Last, wipe off the transfer sheet in a nail remover and wash it pure water. |
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Fig.3 state of the electrolysis |
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②Formation of alloy |
(1)Copper plate being the nameplate is positive. Zinc plate as a counter electrode is a negative electrode. They are immersed in the electrolyte solution. Perform electrolysis at 3V for 10 seconds. |
(2) This copper plate will have been galvanized. Wash this plate with pure water, and heat it with gas burner until the color change. |
(3) It become brass nameplate, polish it using metal polish. |
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Fig.4 brass name plate |
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< About cell of electrolysis > Something to need: |
Expanded polystyrene, for body ... (thickness 20mm) |
Expanded polystyrene, for base ... (thickness 5mm) |
Acrylic plate, for side body ... (thickness 2mm) |
Bolts and nuts |
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How to make: |
(1)Cut the acrylic plate and expanded polystyrene board. Drill a hole in these plate.(See figure) |
(2)Assemble the parts, and through the bolt into the hole and fix with a nut. |
(3)Adhere the body and base with adhesive. |
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Fig.5 cutting the acrylic plate and polystyrene board |
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Fig.6 cell of electrolysis |
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< How to make of transfer sheet and How to print > Something to need: |
Copper plate ...1 |
Transfer sheet...1 |
A laser printer |
Household pressing iron |
Cleanser |
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How to make and print: |
1) On slide the PowerPoint2007, Make a rectangle (14mm × 45mm)of the size of the name plate. On the figure, draw the design of the name plate. At this time, the white part to dissolve. The black parts not dissolve. |
(2) Graphic design reverse right to left. |
(3) Save this design in JPEG format.The picture that you saved will be put on the new slide that is set to the size of the transfer sheet . |
(4) This design print on the printing surface of the transfer sheet with a laser printer. |
(5) Cut the design. Place the design on top of the copper plate, and it will be heated using the iron of high temperature until a black stand out. |
(6) Copper plate is immersed in water for 1 minute. Be peel the transfer sheet off slowly. |
| Fig.7 After peeling off the transfer sheet |
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