Journal of Materials Science: Materials in Electronics

, Volume 28, Issue 17, pp 12683–12689 | Cite as

Aqueous solution blending route for preparing low dielectric constant films of polyimide hybridized with polytetrafluoroethylene

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Abstract

High performance polymer materials with low dielectric constant, good thermal stability and excellent mechanical property are on demand in the next generation integrated circuit devices as the interlayer dielectrics. This study reports the preparation of polyimide hybridized with polytetrafluoroethylene (PI/PTFE hybrid) films with low dielectric constant, excellent thermal stability and mechanical strength by a facile approach. The PI/PTFE hybrid films were prepared by an aqueous solution blending method, that a synthesized water soluble poly(amic acid) ammonium salt was blended with a PTFE aqueous emulsion, followed with spin-coating and thermal imidization. The PI hybrid film (40 wt% PTFE) showed a lowest dielectric constant of 2.25 (at 1 kHz). Meanwhile, the PI/PTFE hybrid films exhibited good thermal stability of the 5% weight loss temperatures (T5%) higher than 520 °C, and glass transition temperatures (Tg) higher than 285 °C; as well as excellent mechanical properties of the tensile stress, modulus, and elongation at break being 84–127 MPa, 0.94–1.86 GPa, and 56–118%, respectively.

Keywords

Dielectric Constant Polyimide PTFE Hybrid Film Good Thermal Stability 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Notes

Acknowledgements

This work is supported by the National Natural Science Foundation of China (Grant Nos. 21174058 & 21374044), the Major Special Projects of Jiangxi Provincial Department of Science and Technology (Grant No. 20114ABF05100) and the Technology Plan Landing Project of Jiangxi Provincial Department of Education (Grant No. KJLD1104).

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Copyright information

© Springer Science+Business Media New York 2017

Authors and Affiliations

  1. 1.Department of Chemistry and Chemical EngineeringJiangxi Normal UniversityNanchangChina

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