Unformatted text preview: c. O:Si ratio should be kept well above 2.5 ( b ) 4. The crystallinity of a polymer is higher in a. bifunctional polymer b. polyfunctional polymer c. condensation polymerization ( a ) 5. Particulate composites are a. anisotropic b. isotropic c. orthotropic ( b ) 6. Bonus An important and costly fiber that is important in strong, light, and high temperature composites is a. Boron fiber b. Glass fiber c. polyethylene ( a )...
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- Fall '08
- Glass, Crystal, Fiberglass, Glass transition, charge neutrality c.