Processing and Testing of Rubber

1.  Incoming raw material inspection
     a. Key characteristics for certain raw materials

2.  Mixing of rubber
     a. Batch vs. continuous mixing
     b. Rotor types
     c. Batch sizing
     d. 1 pass vs. 2 pass mixing
     e. Conventional mixing vs. upside down mixing
     f. Durometer effects on mixing
     g. Mixing for polymer
     h. Raw materials that require special attention during mixing
     i. Common mixing problems
     j. Common milling problems
     k. Batch take off

3.  Testing for Quality Control
     a. Rheology
          i. ODR/MDR
          ii. RPA
     b. Mooney viscosity and scorch
     c. Hardness (Durometer)
     d. Physical properties
     e. Specific gravity
     f. Common dispersion tests
         i. Tight Mill
         ii. Smile Die Extruder
         iii. Dispergrader
         iv. Phillips Dispersion
    g. In depth dispersion tests
         i. SEM/EDX
         ii. nSpec Dispersion
     h. Specialty flow tests
          i. Garvey Die Extrusion
          ii. Porosity
          iii. Spider Mold Flow
          iv. Cpk vs. standard deviation

4. Processing of Rubber (Vulcanization Types)
      a. Molding
           i. Injection
           ii. Compression
           iii. Transfer
          iv. Common Molding Problems
      b. Extrusion
           i. Liquid Curing Medium (LCM)
           ii. Microwave
           iii. Hot Air Oven
           iv. Common Extrusion Problems
      c. Calendering
           i. Common Calendering Problems
     d. Steam Cure
           i. Autoclave