Читать книгу Henley's Formulas, Recipes and Processes (Applied Chemistry) - Various - Страница 65
To Fasten Rubber To Wood.
Оглавление—I.—Make a cement by macerating virgin gum rubber, or as pure rubber as can be had, cut in small pieces, in just enough naphtha or gasoline to cover it. Let it stand in a very tightly corked or sealed jar for 14 days, or a sufficient time to become dissolved, shaking the mixture daily.
II.—Dissolve pulverized gum shellac, 1 ounce, in 9 1/2 ounces of strong ammonia. This of course must be kept tightly corked. It will not be as elastic as the first preparation.
III.—Fuse together shellac and gutta percha in equal weights.
| IV.— | India rubber | 8 ounces |
|---|---|---|
| Gutta percha | 4 ounces | |
| Isinglass | 2 ounces | |
| Bisulphide of carbon | 32 ounces | |
| V.— | India rubber | 5 ounces |
| Gum mastic | 1 ounce | |
| Chloroform | 3 ounces | |
| VI.— | Gutta percha | 16 ounces |
| India rubber | 4 ounces | |
| Pitch | 4 ounces | |
| Shellac | 1 ounce | |
| Linseed oil | 1 ounce |
Amalgamate by heat.
VII.—Mix 1 ounce of oil of turpentine with 10 ounces of bisulphide of carbon in which as much gutta percha as possible has been dissolved.
VIII.—Amalgamate by heat:
| Gutta percha | 100 ounces |
| Venice turpentine | 80 ounces |
| Shellac | 8 ounces |
| India rubber | 2 ounces |
| Liquid storax | 10 ounces |
IX.—Amalgamate by heat:
| India rubber | 100 ounces |
| Rosin | 15 ounces |
| Shellac | 10 ounces |
Then dissolve in bisulphide of carbon.
X.—Make the following solutions separately and mix:
| (a) | India rubber | 5 ounces |
|---|---|---|
| Chloroform | 140 ounces | |
| (b) | India rubber | 5 ounces |
| Rosin | 2 ounces | |
| Venice turpentine | 1 ounce | |
| Oil of turpentine | 20 ounces |
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