Manufacturing and Characterization of Basalt Fiber-Phenolic Resin Composites
Coating adhesion to low energy surfaces is a persistent issue for the commercial and business jet cabin interiors industry. Over time, cabin interiors products have grown to require an increasingly high aesthetic – necessitating the use of coatings – while the incorporation of low energy materials (i.e. thermoplastics) into the product design has likewise increased. Understandably, new coating–substrate combinations in products are both necessary to meet customer requirements and dreaded for the potential adhesion issues they may present. Therefore, every new coating-substrate combination undergoes thorough testing prior to engineering approval. The additional financial and schedule costs associated with this confidence testing may be significantly reduced if adhesion between various coating–substrate combinations could be accurately predicted.This research details an approach to predicting adhesion between coatings and material surfaces based on mechanical and physical adhesion theories. This is completed utilizing empirical modeling of surface roughness measurements and surface free energies calculated from contact angles on coatings (2K PUs) and thermoplastics (PPSU, PEI) typical to the cabin interiors industry. Model generation was accomplished using pull-off adhesion per ASTM D4541 and tape adhesion per ASTM D3359.
Author: Richard Morrison
Conference: SAMPE Seattle 2017