Resins Used in Rubber
| Autor: | Paul O. Powers |
|---|---|
| Rok vydání: | 1963 |
| Předmět: | |
| Zdroj: | Rubber Chemistry and Technology. 36:1542-1570 |
| ISSN: | 1943-4804 0035-9475 |
| DOI: | 10.5254/1.3539653 |
| Popis: | Resinous materials have long been used to aid in the processing of rubber and to impart special properties to the vulcanized product. Resins have been described as various solid or semisolid organic substances. Originally, naturally occurring resins such as rosin were employed but with the advent of synthetic resins, many of these have been used with natural and synthetic rubber. In general the resins considered here are readily fusible and relatively low in molecular weight, the average value often being less than one thousand. However, thermosetting resins are also employed, usually being introduced into the rubber at a low stage of condensation. Resins are frequently added to assist in processing and often are considered as softeners although they are higher in molecular weight than most softeners and their efficiency as softeners is somewhat less. However, they do not soften the resulting vulcanizate and may even increase the hardness. |
| Databáze: | OpenAIRE |
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