Novel Glycidyl Carbamate Functional Epoxy Resin Using Hydroxyl-Terminated Polybutadiene

Area of Science:

• Polymer Chemistry
• Materials Science
• Adhesives Technology

Background:

• Epoxy resins are versatile polymers with widespread applications.
• Developing advanced adhesives with improved performance is crucial for various industries.
• Functionalization of epoxy resins can tailor their properties for specific applications.

Purpose of the Study:

• To synthesize a novel glycidyl carbamate functional epoxy resin (GCE).
• To develop and evaluate a dual-curing adhesive system incorporating the synthesized GCE.
• To assess the adhesive performance of the dual-cure system.

Main Methods:

• Synthesis of GCE via addition reaction of tolylene diisocyanate (TDI) and hydroxyl-terminated polybutadiene (HTPB) with glycidol.
• Confirmation of GCE synthesis using FT-IR and 1H NMR spectroscopy.
• Formulation of dual-curing adhesives with varying GCE content, acrylic acid, and trimethylolpropane triacrylate.

Main Results:

• Successful synthesis of GCE confirmed by spectroscopic methods.
• Dual-cure adhesives exhibited varying adhesive strength, pencil hardness, and surface energy based on GCE content.
• The optimal formulation with 0.2 mol GCE achieved an adhesive strength of 11.1 MPa and pencil hardness of B.

Conclusions:

• The synthesized GCE is a viable component for advanced adhesive formulations.
• The dual-cure adhesive system demonstrates high performance, with properties comparable to polycarbonate.
• This novel epoxy resin offers potential for developing high-strength, durable adhesive materials.