Optimization of hybrid oil/water-swelling ethylene/propylene/diene monomer compounds
| Autor: | Claudia S. P. Peixoto, Pedro F. Costa, Patrizio Raffa, Martin van Duin, Ana Vera Machado, Lorenzo Massimo Polgar, Philip Hough |
|---|---|
| Přispěvatelé: | Product Technology, Universidade do Minho |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Polymers and Plastics
CROSS-LINKING HYDROGELS rubber 02 engineering and technology 010402 general chemistry Elastomer 01 natural sciences law.invention chemistry.chemical_compound swelling Decalin Natural rubber law Materials Chemistry medicine oil and gas Science & Technology elastomers Vulcanization General Chemistry Carbon black MECHANICAL-PROPERTIES 021001 nanoscience & nanotechnology Saline water 0104 chemical sciences Surfaces Coatings and Films chemistry Chemical engineering visual_art Masterbatch visual_art.visual_art_medium Swelling medicine.symptom 0210 nano-technology |
| Zdroj: | Journal of Applied Polymer Science, 137(48):49579. Wiley Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP |
| ISSN: | 0021-8995 |
| Popis: | Hybrid swell packers are rubber products capable of swelling in (saline) water and hydrocarbon oils, by exploiting the hydrocarbon diffusion properties of an nonpolar elastomer with the osmotic swelling of a water absorbent (WA). In this study, a variety of modified natural and synthetic WAs and mixtures thereof have been screened in a rubber compound with respect to swelling in decalin, demineralized, and saline water, respectively. We aimed at achieving high and fast swelling in all used media. Mixing of the various WAs in an ethylene/propylene/diene monomer (EPDM)/carbon black masterbatch at an addition level of 75 phr did not pose any problems, although it was found that the WAs did affect the sulfur vulcanization. Decalin swelling of the vulcanizates is very fast, reaching high equilibrium swelling within 1.5 days. Swelling in demineralized or saline water is much slower, with up to 300% swelling in water and up to 100% swelling in saline water. Significant leaching of the organic WA from the EPDM vulcanizates to the water phase occurs. Some combinations of WAs show synergetic effects for swelling in water. To our knowledge, such a systematic study of hybrid swelling elastomers constitutes a novelty in the open literature. This work was funded by National Funds through FCT - Portuguese Foundation for Science and Technology, Reference PEst-C/CTM/LA0025/2013. |
| Databáze: | OpenAIRE |
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