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Acrylic Mirror Sheet: Silver Sprayed on Tannin-Treated Acrylic
Silver from a chemical bath barely sticks to acrylic: tannin in plain water gave no bond at all. Philips' Ponjee and Verwijlen (US 4,639,382, 1987) found that tannin dissolved in water mixed with an organic solvent such as ethanol makes the silver hold firmly, without etching or clouding the acrylic. The sheet is dipped for a minute, sensitised with a weak stannous chloride spray, then silvered by spraying the silver solution and the reducer together. In the patent's cross-cut test, no squares of silver came off.
The picture: our diagram.
Menengah
2 hours
Instruksi
1
1
Dip in tannin solution for one minute
Dip in tannin solution for one minute
Make a solution of 2.3–5.0 g of tannic acid per litre in water with 15–60 % ethanol by volume. Dip the acrylic sheet in it for one minute.
Material untuk langkah ini:
Lembaran Akrilik1 buahAlat yang dibutuhkan:
Asam Tanat
Etanol mutu laboratorium, 95 %
Air Suling
Baki kaca
Gelas ukur
Neraca lengan
Sarung tangan karet2
2
Rinse with water
Rinse with water
Rinse the sheet with water.
Alat yang dibutuhkan:
Air Suling
Botol semprot cuci laboratorium3
3
Spray with stannous chloride for 12 seconds
Spray with stannous chloride for 12 seconds
Spray the face to be silvered with a solution of 0.1 g stannous chloride and 0.1 ml concentrated hydrochloric acid per litre of water, for 12 seconds. Rinse off the excess with water.
Alat yang dibutuhkan:
Timah(II) Klorida
Asam kloridaAir Suling
Botol semprot airBotol semprot cuci laboratorium
Kacamata Pelindung Cipratan KimiaSarung tangan karet4
4
Spray silver and reducer together
Spray silver and reducer together
Atomise two solutions onto the face at the same time: silver nitrate with ammonia in water, and formalin in water. The patent gives no strengths: as required. Ours: a twin-nozzle spray gun.
Material untuk langkah ini:
Perak Nitrat1 as requiredAlat yang dibutuhkan:
Larutan amonia 25-28 %
Larutan formaldehida (formalin 37 %)Air Suling
Pistol Semprot Dua Nosel
Lemari asam (bersaluran buang)Kacamata Pelindung Cipratan KimiaSarung tangan karetBahan
2- 1 buahPlaceholder
- 1 as requiredPlaceholder
Alat yang Diperlukan
16- Placeholder
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Cetak biru ini membuat
Blueprint terkait
Blueprint ini berbagi pengetahuan — teknik, bahan, atau prinsip
Tannic Acid: Powdered Galls Extracted with Ether (Pelouze, Pharmacopoeia Form)
oleh Charlie
Industri
8
0
0
0
0
0
Berbahaya
Stannous Chloride (Tin Salt): Tin Dissolved in Hydrochloric Acid and Crystallised
oleh Charlie
Anorganik
7
0
0
0
0
0
Berbahaya
Making a Silver Mirror by the Liebig Process — Depositing Metallic Silver on Glass
oleh Charlie
Ruang Angkasa
108
0
0
0
0
0
CC0 Domain Publik
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