Journal
JOURNAL OF GEOPHYSICS AND ENGINEERING
Volume 14, Issue 5, Pages 1225-1232Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1742-2140/aa6e7e
Keywords
PMMA; modified carbon black; composite particle; heat treatment; ultra-lightweight proppant
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Funding
- Public Service Project of the Chinese Ministry of Land and Resource [201311024]
- Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) [CUGL150803]
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Carbon black (CB) is an excellent filler to reinforce polymers because of its unique thermal and mechanical properties. Thus, a type of modified carbon black (MCB) was developed, which led to reduced filler aggregation in methyl methacrylate (MMA) monomers and resulted in homogeneous dispersion in the polymethyl methacrylate (PMMA) substrate. The PMMA-MCB composite particles that were prepared in this work possessed remarkable and stable properties. Therefore, they can be used as an ultra-lightweight proppant (ULWP). Fourier transform infrared spectroscopy showed that CB was successfully modified and the MCB was well dispersed in the PMMA matrix. Results of crushing rate and differential scanning calorimetry demonstrated that MCB could significantly enhance the thermal and mechanical performance of the ULWP. Heat treatment of the ULWP under a nitrogen atmosphere could also clearly enhance its performance in various aspects. The process of modifying CB, the approach of synthesizing PMMA-MCB composite particles, and their mechanism were systematically investigated in this work.
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