Making Lamps and Lanterns Plastic Raw Materials Transparent PMMA Granules Particles Plastic Resin Raw Materials

PMMA English full name: Polymethylmethacrylate, Chinese name: acrylic, color: transparent; chemical name is polymethylmethacrylate. Highly transparent amorphous thermoplastic polymer, relative density (30 ℃/4 ℃) 1.188-1.22. High transparency, light transmittance 90%-92%, higher than plexiglass, and can pass through ultraviolet light up to 73.5%. The refractive index is 1.49. High mechanical strength, good toughness, tensile strength 60-75MPa, impact strength 12-13kJ/m, 8-10 times higher than inorganic glass. It can be stretched and oriented, and the impact strength is increased by 1.5 times. It has excellent resistance to ultraviolet rays and atmospheric aging. The glass transition temperature is 80-100 ℃, and the decomposition temperature is >200 ℃. Use temperature -40～80℃. Alkali resistance, dilute acid resistance, water-soluble inorganic salt resistance, alkanes and grease. Soluble in dichloroethane, chloroform, acetone, glacial acetic acid, dioxane, tetrahydrofuran, ethyl acetate, etc., insoluble in ethanol, ether, petroleum ether, etc. Good electrical insulation.

     PMMA has the advantages of light weight, low price, and easy molding.

characteristic:

1. Excellent transparency, good weather resistance 2. High hardness, excellent surface gloss 3. Water resistance, salt, weak acid, but it will be corroded by alkali

4. Dissolved in organic solvents, good formability, mechanical properties (common heat resistance), tensile modulus of elasticity:

4.3e+005 psi thermal conductivity: 1.675-2.094e+004 erg/sec.cm.℃

Specific heat: 1.424 erg/g.℃

Coefficient of thermal expansion: 6.0-6.8e-005 1/℃

Glass transition temperature: 110-120 ℃