Multifunctional Interphases: Percolation Behavior, Interphase Modification, and Electro‐Mechanical Response of Carbon Nanotubes in Glass Fiber Polypropylene Composites1 . Issue 3 (11th December 2015)

• Record Type: Journal Article
• Authors: Wiegand, Niclas; Mäder, Edith
• Other Names: Modler Niels guestEditor.; Hufenbach Werner guestEditor.
• Is Part Of: Advanced engineering materials. Volume 18:Issue 3(2016:Mar.)
• Page Start: 376
• Page End: 384
• Publication Date: 2015-12-11
• Subjects: Materials -- Periodicals; 620.11
• DOI: 10.1002/adem.201500447
• Languages: English
• ISSNs: 1438-1656

Abstract

Abstract : Carbon nanotube dispersions have been immersedin a maleated polypropylene film former system andapplied to insulating glass filament yarns compatible to polypropylene matrix. The percolation threshold can be reached below 0.5 wt% carbon nanotubecontent. In order to achieve a homogeneous multifunctional interphase, the average sizing thickness must be above 450 nm tailored during a coating process by varying the solid content of the sizing. The temperature and the velocity of the coating process have a great impact on the volume resistivity of the multifunctional interphase. Electro‐mechanical behavior as sensors in unidirectional composites containing 50 vol% glass fiber reinforcement is monitored during tensile and compression loading. The largest electrical sensitivity is achieved for tensile loading in the axis of fibers. Abstract : Carbon nanotube dispersions immersed in a maleated polypropylene film former system compatible to polypropylene matrix achieve a homogeneous multifunctional interphase tailored by solid content, temperature, and velocity during a coating process. Electro‐mechanical behavior as sensors in unidirectional composites containing 50 vol% glass fiber reinforcement is monitored during tensile and compression loading.