Amorphous thermoplastic polymer with high transparency, relative
density (30 ℃/4℃) 1.188-1.22. High transparency, light
transmittance 90%-92%, higher than inorganic glass, and can pass
through ultraviolet light up to 73.5%. Refractive index 1.49. High
mechanical strength, good toughness, tensile strength 60-75mpa,
impact strength 12-13kj /m, higher than inorganic glass 8-10 times.
It is stretchable and directional, and the impact strength is
increased by 1.5 times. It has excellent resistance to ultraviolet
and atmospheric aging. The vitrification temperature is 80-100 ℃,
and the decomposition temperature is >200 ℃. The service
temperature is -40 ~ 80℃. Resistance to alkali, dilute acid, water
soluble inorganic salts, alkanes and fats. Soluble in
dichloroethane, chloroform, acetone, glacial acetic acid, dioxane,
tetrahydrofuran, ethyl acetate, insoluble ethanol, ether, petroleum
ether, etc. Good electrical insulation. PMMA has the advantages of
light weight, low price and easy to shape.