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Ebonite Rod: Rubber and an Equal Weight of Sulphur, Cured Hours in the Heat, Goodyear 1851
Ebonite is rubber with a great deal of sulphur. Nelson Goodyear's patent (1851) uses about equal weights of the two, far more than for soft rubber, moulded and then cured at 260–275 °F for three to six hours or longer. It comes out hard and stiff.
The picture: ebonite objects (photo by FBQ, Wikimedia Commons, CC BY-SA 3.0).
Hagati
1 day
Amabwiriza
1
1
Weigh equal parts
Weigh equal parts
Weigh the rubber and the sulphur, about equal parts by weight. Much less sulphur will not make it hard.
Ibikoresho by'iyi ntambwe:
Urupapuro rw'umupira rwumishijwe n'umwotsi500 g
Ifu ya sufuru500 gIbikoresho bikenewe:
Umunzani w'ibiro2
2
Work the sulphur in
Work the sulphur in
Mix the sulphur into the rubber the usual way rubber is compounded: on the rubber mill, until the sulphur is spread evenly through.
Ibikoresho bikenewe:
Urusyo rw'umupira rufite roulo ebyiri3
3
Mould the rod
Mould the rod
Press the compound firmly into a tube to shape it as a rod.
Ibikoresho bikenewe:
Umuyoboro w'icyuma wa milimetero 124
4
Cure it
Cure it
Heat it to 260–275 °F (about 127–135 °C) and hold it there three to six hours, or longer. Let it cool and push out the hard rod.
Ibikoresho bikenewe:
Itanura
Igipima UbushyuheIbikoresho
2- Umwanya
- 500 gUmwanya
Ibikoresho bikenewe
5- Umwanya
- Umwanya
- Umwanya
Iki gishushanyo gikora
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