| 单词 |
overvulcanize |
| 释义 |
overˈvulcanize, v. [over- 27.] trans. To subject (rubber) to overvulcanization; to make hard or brittle by vulcanizing. Hence overˈvulcanizing vbl. n.
1911P. Schidrowitz Rubber xi. 172 Bysow..found that with a total sulphur of from 3·44 per cent. to 8·91 per cent. equilibrium was not produced until the samples were over-vulcanized. 1916[see overcure v.]. 1922Encycl. Brit. XXX. 35/1 In 1916 some resistance to petrol was introduced by using pure para heavily loaded with mineral matter and rather over-vulcanized. 1967tr. W. Hofmann's Vulcanization & Vulcanizing Agents i. 24 When an article is wholly or partly overvulcanized (thick-sectioned articles, for example, are sometimes overvulcanized at the surface), efficient protection against ageing is always necessary. |

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