Comprehensive Investigation of Epoxy Adhesives for Structural Applications in Saudi Arabia: Mechanical Performance, Environmental Impacts, and Analysis on Health
View abstract on PubMed
Summary
This summary is machine-generated.This study compared four epoxy adhesives in Saudi Arabia, finding Sika 42 offered superior strength and a long pot life for hot climates. Sika 31 demonstrated excellent tensile modulus and shear strain for ductile bonding.
Area Of Science
- Materials Science
- Polymer Chemistry
- Engineering Adhesives
Background
- Epoxy adhesives are vital for engineering materials due to their mechanical properties and durability.
- Selection of four commercial epoxy adhesives available in Saudi Arabia for comparative analysis.
Purpose Of The Study
- To compare the mechanical properties, application suitability, and safety of four epoxy adhesives.
- To assess gas emissions and suitability for Saudi Arabian climatic conditions.
Main Methods
- Comparative analysis of storage, application, and service temperatures.
- Tensile, compressive, and shear testing of adhesive samples.
- Gas analysis for harmful emissions post-mixing.
Main Results
- Sika 42 exhibited highest tensile (75.7 MPa) and compressive (133.8 MPa) strengths with a 48-min pot life at 40°C.
- Sika 31 showed a high tensile modulus (10.4 GPa) and ultimate shear strain (10.7%) for ductile bonds.
- Nitrogen dioxide (NO2) and sulfur dioxide (SO2) were detected initially but absent after 120 min, indicating complete curing.
Conclusions
- Sika 42 is suitable for Saudi Arabian conditions due to strength and pot life, despite complex application and hazards.
- Sika 31 is ideal for applications requiring control of tensile deformation and ductile bonding.
- All tested adhesives showed no harmful gas emissions after complete curing.
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