ADHESION AND MORPHOLOGY OF POLYISOBUTYLENE-BASED SEPARATION COATING
Keywords:
coating, polyisobutylene, adhesion, morphology, hydrophobicity, thermal degradation.Abstract
The paper proposes a separation coating based on polyisobutylene to protect metal tooling. The effect of the polyisobutylene content, temperature, and polymerization time on the adhesion of coatings has been revealed. A regression equation is obtained that relates adhesion to the composition and conditions of coating formation. With the help of the developed software, optimal conditions were calculated that ensure the highest adhesion strength of the coating to the protected surface. The calculation results have been confirmed experimentally. Microscopy has shown that the formed coating has a relatively homogeneous defect-free structure and is hydrophobic. It has been established that the coating is thermally stable at temperatures below 420 ° C.
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