{"id":278108,"date":"2021-10-14T13:12:08","date_gmt":"2021-10-14T13:12:08","guid":{"rendered":"https:\/\/www.sanier.pl\/bw-hasla\/pmma-polimetakrylan-metylu\/"},"modified":"2025-02-12T12:53:09","modified_gmt":"2025-02-12T12:53:09","slug":"pmma-polimetakrylan-metylu","status":"publish","type":"knowledgebase","link":"https:\/\/www.sanier.pl\/en\/bw-hasla\/pmma-polimetakrylan-metylu\/","title":{"rendered":"PMMA (polymethyl methacrylate)"},"content":{"rendered":"

[vc_row][vc_column][vc_column_text]<\/p>\n

Polymer Used for Acrylic Glass Production<\/strong><\/h2>\n

Commonly known as plexiglass<\/strong>, this material is rigid, transparent, and thermoplastic<\/strong>. Naturally colorless with exceptional clarity<\/strong>, it can be dyed<\/strong> and is resistant to many corrosive chemicals<\/strong>.<\/p>\n

The hardness of PMMA<\/strong> lies between wood and steel<\/strong>, comparable to brass or lightweight alloys<\/strong>.<\/p>\n

[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column][vc_column_text]<\/p>\n

Selected Properties of Plexiglass:<\/strong><\/h3>\n
    \n
  • High transparency<\/strong> in the visible light spectrum (transmittance of about 92%<\/strong> for a 3 mm thick sheet).<\/li>\n
  • UV resistance<\/strong>, preventing yellowing<\/strong> (UV-protected sheets).<\/li>\n
  • Easy to process<\/strong>, due to its thermoplastic<\/strong> nature.<\/li>\n
  • Maximum operating temperature<\/strong>: 80\u00b0C.<\/li>\n
  • Softening temperature<\/strong>: 115\u00b0C.<\/li>\n
  • Annealing process<\/strong> (relaxation of internal stresses after processing) occurs at a constant temperature of 80\u00b0C<\/strong> (1 hour per 2 mm thickness).<\/li>\n
  • Relatively low depolymerization temperature<\/strong>, facilitating easy recycling<\/strong>.<\/li>\n
  • Density<\/strong>: 1.19 g\/cm\u00b3.<\/li>\n
  • Tensile strength<\/strong>: 75 MPa.<\/li>\n
  • Compressive strength<\/strong>: 100 MPa.<\/li>\n
  • Impact resistance (Charpy notched test)<\/strong>: 1.5 kJ\/m\u00b2.<\/li>\n
  • Shore D hardness<\/strong>: 75.<\/li>\n<\/ul>\n

    Disadvantage:<\/strong><\/h3>\n
      \n
    • Low surface hardness<\/strong> \u2013 The surface of the sheets is easily scratched<\/strong>, especially noticeable on glossy finishes<\/strong>.<\/li>\n<\/ul>\n

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