Volumetrical Characterization of Sheet Molding Compounds

Area of Science:

• Materials Science
• Surface Engineering
• Polymer Composites

Background:

• Sheet Molding Compound (SMC) surfaces present complex topographical features.
• Understanding surface characteristics is crucial for predicting material performance, such as coatability.
• Cavity formation on SMC surfaces impacts overall material properties and application suitability.

Purpose of the Study:

• To develop a profile model for understanding cavity formation on SMC surfaces.
• To characterize SMC surfaces for qualification and coatability prediction.
• To introduce and validate a new quantitative parameter for assessing surface modification effects.

Main Methods:

• Chromatic confocal imaging was used to obtain topographical data.
• Systematic analysis of profile data was performed to develop a surface model.
• A novel parameter, Surface Relative Smooth, was defined and applied to quantify surface modifications.

Main Results:

• A profile model was successfully developed to analyze SMC surface topography.
• Cavity characterization was established as a method for qualifying SMC surfaces and predicting coatability.
• The Surface Relative Smooth parameter effectively quantified the impact of surface modification treatments.

Conclusions:

• The developed profile model provides insights into SMC surface cavity formation.
• The characterization of cavities is a viable approach for predicting SMC surface coatability.
• The Surface Relative Smooth parameter offers a universal method for evaluating surface modifications on various solid materials.