Fiberglass

Question 1

What are the characteristics of fiberglass?

Answer 1

~ “e-glass”

~ calcium aluminosilicate glass

~ high CaO and Al2O3 content, need high temp for melt and firing

~ viscosity rapidly changes with temp, useful for forming fibers

~ highly durable

Question 2

How is fiberglass formed?

Answer 2

~ extruding through Pt/Rh alloy nozzles or propelling throgh Pt/Rh mesh by centripedal force, cooling and reaching infinite viscosity when contacts air

~ coated with organic binder and textile-processed to a texture similar to wool