Ultra-High Temperature Tooling Material
for the Manufacture of Advanced Composites
SAMPE 1991, 36, vol. 2, pp 1939-1949:
Geopolymers of the Poly(sialate-disiloxo) type (- Si-O-Al-Si-O-Si-O -), very-low viscosity inorganic resins, harden like thermosetting organic resins, but have use-temperature range up to 1000°C (1830°F). High-temperature techniques are no longer necessary to obtain materials which are ceramic-like in their properties. Geopolymers provide faithful reproduction of mold or die surface and allow for precision and fineness. Geopolymer composite-tooling and geopolymer castable-tooling offer direct replication, on-site construction capabilities and very short cure-cycle. They enable product designers and tool makers to envisage the use of ceramic type materials with the same facility as organic polymers. Geopolymer composite and castable tooling have been fabricated and are in use, processing APC-2 thermoplastic materials as well as PMR-15 polyimides.
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