When it comes to the two properties of plexiglass, there is no doubt about physical properties and chemical properties. Then we will come to a simple understanding of the two properties of plexiglass today, and welcome interested friends to come to our company and factory to visit, look forward to your visit!
Physical properties：
The heat resistance of plexiglass is not high. Although its glass transition temperature reaches 104 °C, the maximum continuous use temperature varies between 65 °C and 95 °C depending on the working conditions. The heat distortion temperature is about 96 °C (1.18 MPa). ), Vicat softening point of about 113 ° C. The thermal stability of plexiglass is medium, better than polyvinyl chloride and polyoxymethylene, but less than polyolefin and polystyrene, the thermal decomposition temperature is slightly higher than 270 ° C, and its flow temperature is about 160 ° C, so there is still a wide Melt processing temperature range.
Chemical properties：
Plexiglass can withstand relatively thin inorganic acids, but concentrated inorganic acids can erode it and can be resistant to alkalis, but warm sodium hydroxide and potassium hydroxide can etch it, and can withstand salt and oil. It is resistant to aliphatic hydrocarbons, insoluble in water, methanol, glycerin, etc., but absorbs alcohols and swells, and produces stress cracking, which is not resistant to ketones, chlorinated hydrocarbons and aromatic hydrocarbons. Its solubility parameter is about 18.8 (J / CM3) 1/2, soluble in many chlorinated hydrocarbons and aromatic hydrocarbons, such as dichloroethane, trichloroethylene, chloroform, toluene, etc., vinyl acetate and acetone can also make it Dissolved. Plexiglass has good resistance to gases such as ozone and sulfur dioxide.
