Journal
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
Volume 28, Issue 9, Pages 6544-6551Publisher
SPRINGER
DOI: 10.1007/s10854-017-6343-6
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Funding
- National Science Foundation of China [51407134]
- China Postdoctoral Science Special Foundation [2015T81028]
- China Postdoctoral Science Foundation [2016M590619, 2016M592138]
- Natural Science Foundation of Shandong Province [ZR2016EEQ28]
- Natural Science Basic Research Plan in Shaanxi Province of China [2015JM5215]
- Special Scientific Research Program of Shaanxi Provincial Department of Education [16JK1043]
- Baoji Science and Technology Project [16RKX1-29]
- Key Project of Baoji University of Arts and Sciences [ZK16072]
- Baoji Engineering Technology Research Center for Ultrafast Optics and New Materials [2015CXNL-1-3]
- China Scholarship of Council [201508615058]
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In this paper, titanium dioxide (TiO2)/phenolphthalein-type polyimide (PPPI) composite was synthesized in situ polymerization, the diamino phenolphthalein type compound and dimethylacetamide as the matrix, and TiO2 as the filler. The mechanical property and thermal conductivity properties were used to characterize the properties of the obtained composite. A diamine monomer containing more benzene rings of phenolphthalein and an ether bond in its main chain were prepared, synthesized by a nucleophilic substitution reaction and a hydrazine hydrate reduction reaction. Polyimide composite had the same structure as that of a diamine monomer. And it was synthesized by solution imidization and heat imidization. The results showed that TiO2 improved the dispersibility, alignment and interfacial strength of the TiO2/PPPI composite. The mechanical property of polyimide composite was increased with the increasing TiO2 loading. And a suitable addition of TiO2 could enhance the mechanical properties of polyimide system. Compared to polyimide resin, the TiO2/PPPI composite had a higher thermal conductivity with the increasing of TiO2 content. All of these changes in properties were closely correlated with the TiO2/PPPI composite, which could form an interaction interface structure in the system.
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