THz Properties of Adhesives

We determined the THz properties of 12 different adhesives which are mainly used for industrial purposes. The adhesives applied can be classified according to their chemical structure: epoxy resins, acrylic resins, and polyurethane based materials. This work represents a basis for future studies, which will concentrate on aging effects, including the absorption of water of adhesive joints. Thus, the dielectric properties of the unaged adhesives are investigated and the results of these measurements are described herein.

[1]  M. Koch,et al.  Monitoring the Polymerization of Two-Component Epoxy Adhesives Using a Terahertz Time Domain Reflection System , 2015 .

[2]  Yun-Sik Jin,et al.  Terahertz Dielectric Properties of Polymers , 2006 .

[3]  M. Koch,et al.  Properties of Building and Plastic Materials in the THz Range , 2007 .

[4]  Peter Cawley,et al.  The Non-destructive Testing of Adhesively Bonded Structure: A Review , 1986 .

[5]  Martin Koch,et al.  Terahertz spectroscopy on adhesive bonds , 2011 .

[6]  Martin Koch,et al.  THz Properties of Nematic Liquid Crystals , 2010 .

[7]  Martin Koch,et al.  Optical Properties of 3D Printable Plastics in the THz Regime and their Application for 3D Printed THz Optics , 2014 .

[8]  M. Scheller.  Data Extraction from Terahertz Time Domain Spectroscopy Measurements , 2014 .

[9]  D. Grischkowsky,et al.  Far-infrared time-domain spectroscopy with terahertz beams of dielectrics and semiconductors , 1990 .

[10]  M. Koch,et al.  Terahertz spectroscopy and imaging – Modern techniques and applications , 2011 .

[11]  J. Coutaz,et al.  A reliable method for extraction of material parameters in terahertz time-domain spectroscopy , 1996 .

[12]  Martin Koch,et al.  Terahertz spectroscopy on polymers: A review of morphological studies , 2011 .

[13]  Richard Baraniuk,et al.  Material parameter estimation with terahertz time-domain spectroscopy. , 2001, Journal of the Optical Society of America. A, Optics, image science, and vision.

[14]  M. Koch,et al.  Highly accurate optical material parameter determination with THz time-domain spectroscopy. , 2007, Optics express.

[15]  Peter Uhd Jepsen,et al.  Investigation of aqueous alcohol and sugar solutions with reflection terahertz time-domain spectroscopy. , 2007, Optics express.

[16]  Martin Koch,et al.  Cure monitoring of two-component epoxy adhesives by terahertz time-domain spectroscopy , 2016, Polymer Science Series B.

[17]  C. Schmuttenmaer,et al.  FAR-INFRARED DIELECTRIC PROPERTIES OF POLAR LIQUIDS PROBED BY FEMTOSECOND TERAHERTZ PULSE SPECTROSCOPY , 1996 .

[18]  M. Havenith,et al.  Uncertainty and Ambiguity in Terahertz Parameter Extraction and Data Analysis , 2011 .