Reversion free high-temperature vulcanization of cis-polybutadiene rubber with the accelerated-sulfur system
The vulcanization of high diene elastomers with conventional or semi-efficient vulcanization systems exhibit reversion at a higher temperature due to the breakage of the polysulfidic crosslinks established in the vulcanized network. As a result, the vulcanizate show inferior mechanical and thermal s...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Budapest University of Technology
2020-09-01
|
| Series: | eXPRESS Polymer Letters |
| Subjects: | |
| Online Access: | http://www.expresspolymlett.com/letolt.php?file=EPL-0010496&mi=cd |
| _version_ | 1818359870195236864 |
|---|---|
| author | S. Gopi Sathi R. Stocek O. Kratina |
| author_facet | S. Gopi Sathi R. Stocek O. Kratina |
| author_sort | S. Gopi Sathi |
| collection | DOAJ |
| description | The vulcanization of high diene elastomers with conventional or semi-efficient vulcanization systems exhibit reversion at a higher temperature due to the breakage of the polysulfidic crosslinks established in the vulcanized network. As a result, the vulcanizate show inferior mechanical and thermal stability at elevated temperature. In this contest, the anti-reversion ability of Maleide F (75% N,N'-meta phenylene dimaleimide and a 25% blending agent: MF) was evaluated on the vulcanization behavior of cis-polybutadiene rubber (BR) with a conventional accelerated sulfur system. The anti-reversion ability of MF was also compared with Perkalink 900 (1,3-bis (citraconimidomethyl) benzene: PL). Based on the vulcanization studies using a moving die rheometer, it has been realized that MF forms carbon-carbon based bismaleimide crosslinks at the beginning of the vulcanization via Alder-Ene reaction. As a result, MF-filled systems exhibit a remarkable reversion resistance and a plateau type cure behavior even at 180 °C for a period of 1hr. On the other hand, PL shows its anti-reversion activity via Diels-Alder reaction after a short reversion. Moreover, the PL filled system exhibits a marching-modulus cure behavior at a higher vulcanization temperature. Therefore, PL cannot be considered as a promising candidate for the hightemperature vulcanization of BR with accelerated sulfur. |
| first_indexed | 2024-12-13T20:51:46Z |
| format | Article |
| id | doaj.art-d9d0b2adc3e34fa8903032a8948a4125 |
| institution | Directory Open Access Journal |
| issn | 1788-618X |
| language | English |
| last_indexed | 2024-12-13T20:51:46Z |
| publishDate | 2020-09-01 |
| publisher | Budapest University of Technology |
| record_format | Article |
| series | eXPRESS Polymer Letters |
| spelling | doaj.art-d9d0b2adc3e34fa8903032a8948a41252022-12-21T23:31:51ZengBudapest University of TechnologyeXPRESS Polymer Letters1788-618X2020-09-0114982383710.3144/expresspolymlett.2020.68Reversion free high-temperature vulcanization of cis-polybutadiene rubber with the accelerated-sulfur systemS. Gopi SathiR. StocekO. KratinaThe vulcanization of high diene elastomers with conventional or semi-efficient vulcanization systems exhibit reversion at a higher temperature due to the breakage of the polysulfidic crosslinks established in the vulcanized network. As a result, the vulcanizate show inferior mechanical and thermal stability at elevated temperature. In this contest, the anti-reversion ability of Maleide F (75% N,N'-meta phenylene dimaleimide and a 25% blending agent: MF) was evaluated on the vulcanization behavior of cis-polybutadiene rubber (BR) with a conventional accelerated sulfur system. The anti-reversion ability of MF was also compared with Perkalink 900 (1,3-bis (citraconimidomethyl) benzene: PL). Based on the vulcanization studies using a moving die rheometer, it has been realized that MF forms carbon-carbon based bismaleimide crosslinks at the beginning of the vulcanization via Alder-Ene reaction. As a result, MF-filled systems exhibit a remarkable reversion resistance and a plateau type cure behavior even at 180 °C for a period of 1hr. On the other hand, PL shows its anti-reversion activity via Diels-Alder reaction after a short reversion. Moreover, the PL filled system exhibits a marching-modulus cure behavior at a higher vulcanization temperature. Therefore, PL cannot be considered as a promising candidate for the hightemperature vulcanization of BR with accelerated sulfur.http://www.expresspolymlett.com/letolt.php?file=EPL-0010496&mi=cdrubbervulcanizationreversionbismaleimide diels-alder reaction |
| spellingShingle | S. Gopi Sathi R. Stocek O. Kratina Reversion free high-temperature vulcanization of cis-polybutadiene rubber with the accelerated-sulfur system eXPRESS Polymer Letters rubber vulcanization reversion bismaleimide diels-alder reaction |
| title | Reversion free high-temperature vulcanization of cis-polybutadiene rubber with the accelerated-sulfur system |
| title_full | Reversion free high-temperature vulcanization of cis-polybutadiene rubber with the accelerated-sulfur system |
| title_fullStr | Reversion free high-temperature vulcanization of cis-polybutadiene rubber with the accelerated-sulfur system |
| title_full_unstemmed | Reversion free high-temperature vulcanization of cis-polybutadiene rubber with the accelerated-sulfur system |
| title_short | Reversion free high-temperature vulcanization of cis-polybutadiene rubber with the accelerated-sulfur system |
| title_sort | reversion free high temperature vulcanization of cis polybutadiene rubber with the accelerated sulfur system |
| topic | rubber vulcanization reversion bismaleimide diels-alder reaction |
| url | http://www.expresspolymlett.com/letolt.php?file=EPL-0010496&mi=cd |
| work_keys_str_mv | AT sgopisathi reversionfreehightemperaturevulcanizationofcispolybutadienerubberwiththeacceleratedsulfursystem AT rstocek reversionfreehightemperaturevulcanizationofcispolybutadienerubberwiththeacceleratedsulfursystem AT okratina reversionfreehightemperaturevulcanizationofcispolybutadienerubberwiththeacceleratedsulfursystem |