![]() Tensile strength decreases with increased water absorption. PMMA has a maximum water absorption ratio of 0.3 - 0.4% by weight. ![]() Its environmental constancy is superior to other plastics such as polystyrene and polyethylene, and PMMA is therefore often the material of choice for outdoor applications. PMMA swell up and dissolves in many organic solvents it also has poor resistance to many other chemicals. Acrylic balls offer high light transmittance and even prolonged exposure to moisture or total immersion in water does not significantly effect the optical properties of our acrylic balls. ![]() It filters ultraviolet (UV) light at wavelengths below about 300 nm. PMMA transmits up to 92% of visible light (3 mm thickness), and gives a likeness of about 4% from each of its surfaces on account of its refractive index (1.4914 at 587.6 nm). It also has great impact strength, higher than both glass and polystyrene though PMMA's impact strength is still considerably lower than polycarbonate and some engineered polymers. It has a density of 1.17 - 1.20 g/cm³, which is less than half that of glass. PMMA is a durable and lightweight material. Acrylic, also known as Polymethyl Methacrylate or PMMA, is a clear thermoplastic material often used as a light weight substitution for glass. We offer solid acrylic balls and spheres in a vareity of sizes. Our acrylic balls exhibit great resistance to breakage and are versatile as they are used for many applications. How to Select Right Frac Ball for Application.Precision Instrumentation & Registration.Hollow Polypropylene Plastic Precision Balls.
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