期刊
MATERIALS & DESIGN
卷 64, 期 -, 页码 687-693出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.matdes.2014.08.051
关键词
Silica particles; Modification; In-situ; Ex-situ; Surface area; Reinforcement
资金
- National Natural Science Foundation of China [51303034]
- Natural Science Foundation of Ningbo [Y40307DB05]
In-situ and ex-situ methods were applied to modify silica particles in order to investigate their effects on the reinforcement of silicone rubber. Surface area and pore analyzer, laser particle size analyzer, Fourier-transform infrared spectroscopy (FTIR), contact-angle instrument, and transmission electron microscope (TEM) were utilized to investigate the structure and properties of the modified silica particles. Dynamic mechanical thermal analyzer (DMTA) was employed to characterize the vulcanizing behavior and mechanical properties of the composites. Thermogravimetric analysis (TGA) was performed to test the thermal stability of the composites. FTIR and contact angle analysis indicated that silica particles were successfully modified by these two methods. The BET surface area and TEM results reflected that in-situ modification was more beneficial to preparing silica particles with irregular shape and higher BET surface area in comparison with ex-situ modification. The DMTA and TGA data revealed that compared with ex-situ modification, the in-situ modification produced positive influence on the reinforcement of silicone rubber. (C) 2014 Elsevier Ltd. All rights reserved.
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