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celluloid, hardening and softening
Значение термина celluloid, hardening and softening в knolik
celluloid, hardening and softening - Celluloid, Hardening and Softening
celluloid, hardening and softening - There is no method of hardening celluloid after it is made; if it is required hard, then 3 to 5 per cent, of resin or shellac is mixed with the original pyroxyline for the manufacture of the celluloid. To soften the celluloid and render it flexible castor oil is used. Opaque celluloid may also be made much harder and more like ivory by the addition of mineral matter such as carbonate of lime or zinc oxide.
Рядом со словом celluloid, hardening and softening в knolik
| celluloid, colouring | В начало буква "" буквосочетание "" | celluloid, incombustible |
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