A semi-crystalline polymer, POLYCARBONATE is characterized by unequalled impact resistance with very high clarity. Sheet has 250 times the impact resistance of glass and 30 times ACRYLIC. As well, dimensional stability and tensile strength are good. Creep resistance is very good over a broad range of temperature. POLYCARBONATE has good electrical resistance properties, little affected by humidity. But, if strong arcing is expected, POLYCARBONATE should not be used. Resistance to water, dilute acids, oxidizing and reducing agents, neutral and acidic salt solutions; animal, vegetable and mineral oils; cyclic and aliphatic hydrocarbons is good at room temperature. Alkalais, concentrated acids, amines, ketones, esters and aromatic hydrocarbons attack POLYCARBONATE. Halogenated hydrocarbons, phenols and aromatic amines dissolve POLYCARBONATE. Water based emulsions are usually employed when machining POLYCARBONATE. Close tolerance parts can be machined using high speed tooling, at high turning speeds with adequate allowance to minimizing heat build-up and internal stressing. Machining results in frosted surfaces and parts that are not clear. POLYCARBONATE parts not subject to impact may be solvent cemented; but parts subject to impact must be surface roughened and bonded with polar adhesives.
A unique laminated sheet using several ply's of POLYCARBONATE, with or without ACRYLIC interlayers, is bullet resistant with multiple-shot, no-spalling function.