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Updated: May 31, 2026
09:06
Evaluation of the Curing of Adhesive Systems by Rheological and Thermal Testing
Published on: July 3, 2020
Induction Curing of Thiol-acrylate and Thiolene Composite Systems
Sheng Ye1, Neil B Cramer, Blake E Stevens
1Department of Chemical & Biological Engineering, University of Colorado, UCB 424, Boulder, CO 80309.
Macromolecules
|July 19, 2011
Summary
Induction curing offers a novel, light-independent method for polymerizing opaque composites. This technique rapidly cures thiol-ene and thiol-acrylate resins using magnetic nanoparticles, enhancing material properties like modulus and conductivity.
Area of Science:
- Materials Science
- Polymer Chemistry
- Nanotechnology
Background:
- Photocuring is limited by light accessibility, hindering its use with opaque materials.
- Developing alternative in situ curing methods is crucial for advanced composite fabrication.
Purpose of the Study:
- To introduce and demonstrate induction curing as a novel polymerization technique for opaque composites.
- To investigate the kinetics, thermal profiles, and material property enhancements of induction-cured thiol-ene and thiol-acrylate systems.
Main Methods:
- Utilized nanoscale magnetic particles within thiol-ene and thiol-acrylate resins, activated by an external magnetic field for induction heating.
- Modeled and experimentally characterized heat transfer, reaction kinetics, and temperature profiles under varying induction heater power, particle concentration, and sample thickness.
- Incorporated carbon nanotubes into thiol-acrylate composites to evaluate changes in mechanical and electrical properties.
Main Results:
- Achieved rapid polymerization (0.6 to 60 minutes) in thiol-ene and thiol-acrylate systems, with controllable maximum temperatures (86-146 °C).
- Developed a predictive model for reaction kinetics and temperature profiles with an average deviation of 9°C from experimental data.
- Demonstrated significant improvements in storage modulus (17.6 to 21.6 MPa) and electrical conductivity (<10⁻⁷ to 0.33 S/m) with 1 wt% carbon nanotube addition.
Conclusions:
- Induction curing is a versatile, designable, and tunable method for polymerizing opaque composites, overcoming photocuring limitations.
- The integration of magnetic nanoparticles and carbon nanotubes offers a pathway to create advanced functional materials with enhanced mechanical and electrical properties.
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