Novel propargylether-terminated ester-imide prepolymers: III. Thermoset/thermoset blend prepolymers as matrix resins for composites

Glass-cloth-reinforced composites were prepared from prepolymers of various weight ratio blends of the state-of-the-art propargylether-terminated este r-imide (1) and bismaleimide (MB-8000). The T-g of a composite is directly related to the weight ratio of MB-8000 present. The composites demonstrated excellent initial mechanical properties. The chemical and electrical prope rties under severe long-ageing conditions were demonstrated.