Figure 1. The chemical structure of the diisocyanates used in this study.
Figure 2. The set-to-touch time of the gel-coat depending on chemical structure of the diisocyanate.
Figure 3. The surface hardness of the gel-coat depending on chemical structure of the diisocyanate.
Figure 4. The tensile strength of the gel-coat depending on chemical structure of the diisocyanate.
Figure 5. The pull-off test results of the gel-coat depending on chemical structure of the diisocyanate.
Table 1. Differences in color parameters of the gel-coat depending on chemical structure of the diisocyanate before and after QUV-exposure tests.
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