IṢẸ́ ỌNÀ
ẸWÀ ÀTI ÌLERA
IṢẸ́ ỌWỌ́
ÀṢÀ ÀTI ÌTÀN
ÌṢERÉ
ÀYÍKÁ
OÚNJẸ ÀTI OHUN MÍMU
REVERSE ENGINEERING
SÁYẸ́ǸSÌ
ERÉ ÌDÁRAYÁ
ÌMỌ̀-Ẹ̀RỌ
ÀWỌN OHUN WÍWỌ̀
Acrylic Mirror Sheet: Silver Sprayed on Acrylic Treated with Tannin in Water and Acetic acid
Philips' Ponjee and Verwijlen (US 4,639,382, 1987) made silver hold on acrylic by first dipping it in tannin dissolved in water mixed with an organic solvent; tannin in plain water gave no bond. This is their acetic acid solution: 55–90 % water, 19–45 % acetic acid by volume, 3.3–5.5 g tannin per litre, which gave full bonding in their cross-cut test. The sheet is then sensitised with weak stannous chloride and silvered by spraying the silver solution and the reducer together.
The picture: our diagram.
Àárín
2 hours
Ìlànà
1
1
Dip in tannin solution for one minute
Dip in tannin solution for one minute
Make a solution of 3.3–5.5 g of tannic acid per litre in 55–90 % water and 19–45 % acetic acid by volume. Dip the acrylic sheet in it for one minute.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Pẹlẹbẹ Akrílíìkì1 ẹyọÀwọn irinṣẹ́ tí a nílò:
Tanikì Ásídì
Acid acetic (glacial)
Omi Àyọ́
Àwo dígí
Silinda òǹwọ̀n
Òǹwọ̀n ìdọ́gba
Àpótí eérú (tí ó ní ọ̀pá ìjáde)
Ìbọ̀wọ́ rọ́bà2
2
Rinse with water
Rinse with water
Rinse the sheet with water.
Àwọn irinṣẹ́ tí a nílò:
Omi Àyọ́
Ìgò Fífọ̀3
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.
Àwọn irinṣẹ́ tí a nílò:
Sitanọ́ọ̀sì Kloraidi
Hydrochloric acidOmi Àyọ́
Ìgò ìfọn omiÌgò Fífọ̀
Gílásì Ààbò Fún Ìfọ́n Kẹ́míkàÌbọ̀wọ́ rọ́bà4
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.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Silver Nitrate1 as requiredÀwọn irinṣẹ́ tí a nílò:
Omi amonia - 25-28 %
Omi formaldehyde (formalin 37 %)Omi Àyọ́
Ìbọn Fífọ́n Ihò MéjìÀpótí eérú (tí ó ní ọ̀pá ìjáde)Gílásì Ààbò Fún Ìfọ́n Kẹ́míkàÌbọ̀wọ́ rọ́bàÀwọn ohun-èlò
2- 1 ẹyọÀyè
- 1 as requiredÀyè
Àwọn irinṣẹ́ tó nílò
16- Àyè
- Àyè
- Àyè
- Àyè
- Àyè
Ìtọ́nisọ́nà yìí ń ṣe
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