研究了滑石粉填充EPDM橡胶复合材料的力学性能,主要研究了滑石粉粒径、滑石粉含量、硫化温度以及硫化时间对EPDM橡胶复合材料力学性能的影响.结果表明,相比1250目滑石粉,2500目超细滑石粉对三元乙丙橡胶的补强效果显著.随滑石粉含量的增加,复合材料的断裂强度先增加后减小.超细滑石粉体系的断裂强度以及断裂伸长率随滑石粉含量的增加快速变大,当滑石粉含量为50份时出现拐点.对超细滑石粉-EPDM体系分别于145℃、150℃、155℃、160℃和170℃硫化30min,结果表明,150℃硫化时,复合材料的力学性能最好.依据160℃硫化特征时间T_(10)、T_(30)和T_(60)进行硫化,结果显示硫化时间为T_(10)时复合材料的力学性能最佳.
This work cover the talcum filled with EPDM, the effect of talcum's dimension, contents, curing temperature and curing time to the mechanics of the composites is studied. The results show that the 2500 mesh's talcum has better reinforcement than the 1250 mesh's talcum to the composites. As the contents of talcum increased, the mechanical properties first increased and then decreased. The tensile strength and the elongation at break increased rapidly as the filler contents of 2500 mesh's talcum increased, but when the filler reached to 50 phr. 100 EPDM, the mechanical properties appeare an inflexion. The fine talcum-EPDM composites is vulcanized at five different tempera-tures(145℃,150℃ ,155℃ ,160℃ and 170℃ for 30 minutes. The composites has the largest tensile strength cured at 150℃. With the increasing of temperature the mechanical properties become poor. Curing the blends for different time according to the vulcanization characteristics of T_(10), T_(30) and T_(60) at 160℃. The result shows that the sample vulcanization for time of T_(10) has better tensile strength.
参考文献
| [1] | 梁诚.新型乙丙橡胶生产与应用进展[J].化工新型材料,2005(02):1-4. |
| [2] | 包林康.乙丙橡胶的基本性能和应用[J].中国橡胶,2005(03):24-27. |
| [3] | 杜鹃,郭春红.乙丙橡胶生产、市场现状及发展分析[J].中国橡胶,2004(03):18-20,23. |
| [4] | 项素云,田春香,李慧玲,齐颖,贾岫庄.滑石粉在填充改性聚丙烯塑料中的应用与展望[J].中国非金属矿工业导刊,2005(06):13-16. |
| [5] | 徐涛,雷华,于杰,金志浩.滑石粉填充PP材料中颗粒分布分形特征及其与冲击性能的关系[J].高分子材料科学与工程,2002(01):135-139. |
| [6] | Jean L. Leblanc .Rubber-filler interactions and rheological properties in filled compounds[J].Progress in Polymer Science,2002(4):627-687. |
| [7] | 卢咏来;张立群;刘力 等.EPDM胶料的性能研究Ⅱ白炭黑补强EPDM胶料[J].橡胶工业,1996,46:195. |
| [8] | Seyed Javad Ahmadi;Yudong Huang;Wei LI .Fabrication and physical properties of EPDM-organoclay nanocomposites[J].Composites science and technology,2005(7/8):1069-1076. |
| [9] | Suprakas Sinha Ray;Masami Okamoto .Polymer/layered silicate nanocomposites:a review from preparation to processing[J].Progress in Polymer Science,2003(11):1539-1641. |
| [10] | Ru Liang Fan;Yong Zhorig;Feng Li et al.Effect of hightemperature curing on the crosslink structures and dynamic mechanical properties of gun and N330-filled natural rubber vulcanizates[J].Polymer Testing,2001,20:925. |
| [11] | Shan Haitao;Cui Juqing;Zhang Qiang et al.Preparation and properties of EPDM/TiO_2 composites[J].Journal of Applied Polymer Science,2007,106:314. |
| [12] | Donghee Kang;Dongsik Kim;Sung-Hwan Yoon et al.Properties and dispersion of EPDM:/modified-organoclay nanocomposites[J].Macromolecular Materials and Engineering,2007,292:329. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%