You will see this in
many of our brochure displays, racks, counter displays, donation Clear Plastic
Folding Boxes and point of
purchase displays. They are formulated to filter ultraviolet energy in the
360-nm and lower band. Other acrylic formulations are opaque to UV light or
provide reduced UV transmission. And how about mechanical properties? Although
not known for having many, acrylics can be used for short-term loading. If the
intended use is long-term, stresses must be limited to 1,500 psi to avoid
surface cracking and deterioration.
Acrylic does well in the
cold, as the impact resistance of standard formulations is maintained in these
conditions. It should be noted that high-impact acrylic grades have greater
impact strength than standard grades at room temperature, but impact strength
decreases as temperature drops. Some types of acrylic are even known to resist
bullets! Acrylic plastics are highly scratch resistant, especially among other
thermoplastics. It's a good idea, however, to ensure proper maintenance and
cleaning.
Keep in mind that
abrasion-resistant acrylic sheet is available and has the same optical and
impact properties as standard grades. This brings up a good point - its
versatility and adaptability. Are you aware that Jet-aircraft cabin windows are
made from acrylic sheet? They do this by inducing molecular orientation during
forming. This proves the potential strength of acrylic sheet. How do they react
to other chemicals and compounds? Acrylic sheet and moldings resist solutions
of inorganic acids and alkalies and hydrocarbons such as VM&P naphtha, as
well as most detergent solutions and cleaning agents.
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