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
Silicone Rubber Compound: Dimethyl Silicone Oil Gelled with Ferric Oxide, Agens 1948
Dimethyl silicone oil mixed with three-quarters its weight of red ferric oxide and a little aluminium chloride, heated to 130 °C, thins and then sets to a solid mass; milled on warm rubber rolls it becomes a silicone rubber compound ready to mould or extrude (Agens, General Electric, US 2,448,756, 1948). Cured, it stretches over 100 % and stays flexible at −60 °C.
The picture: our drawing of the beaker, the mill and the sheet.
Ilọsíwájú
A day
Ìlànà
1
1
Weigh the mix
Weigh the mix
To 400 g silicone oil add 300 g ferric oxide (75 % of the oil) and 5 g anhydrous aluminium chloride (1.25 %). Stir it smooth. Keep the chloride dry; it fumes in damp air.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Òróró dimethyl silicone400 g
Ìyẹ̀fun pupa ìdán kíkúnná300 gÀwọn irinṣẹ́ tí a nílò:
Aluminium chloride (aláìlómi)
Ago Bórósílíkéètì
Ohun ìrúwé
Òṣùwọ̀n Díjítà Ilé Ìdáná
Ìbọ̀wọ́ rọ́bà2
2
Heat to 130 °C
Heat to 130 °C
Heat the mix to 130 °C. It first gets thinner, then thickens fast until the whole mass is solid.
Àwọn irinṣẹ́ tí a nílò:
Pátákó Gbígbóná
Ẹ̀rọ Ìwọ̀n OoruAgo Bórósílíkéètì3
3
Mill and sheet
Mill and sheet
Work the mass on rubber rolls at 125 °C for about half an hour and take it off as a sheet. This is the compound.
Àwọn irinṣẹ́ tí a nílò:
Ẹ̀rọ rọ́bà olórólà méjìẸ̀rọ Ìwọ̀n Ooru4
4
Test a piece
Test a piece
Agens's test: press a sheet about 1.3 mm thick between platens at 150 °C for ten minutes, then 15 minutes in an oven at 200 °C. It should stretch over twice its length.
Àwọn irinṣẹ́ tí a nílò:
Ẹ̀rọ ìtẹ̀mọ́lẹ̀ gbígbóná
Ààrò ìrọ̀ irin5
5
The mix
The mix
Ń ṣí ìwé Jupyter…
Àwọn ohun-èlò
2- Àyè
- Àyè
Àwọn irinṣẹ́ tó nílò
10- Àyè
Ìtọ́nisọ́nà yìí ń ṣe
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