Design Guide - Solvay Plastics

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Environmental Resistance. .................. 29 Weathering. ................................ 29 Hydrolytic Stability ........................... 29 Long-Term Exposure to Hot Water. ............ 29 Test Procedure. ............................. 29 Test Results. ............................... 29 Hot Chlorinated Water ...................... 31 Steam Sterilization Analysis. .................. 31 Radiation Resistance ......................... 32 Chemical Resistance (Unstressed). .............. 32 Stress Cracking Resistance .................... 34 Physical Properties. ........................ 39 Water Absorption. ........................... 39 Wear Resistance ............................ 39 Abrasion Resistance. ....................... 39 Permeability. ............................... 39 Rockwell Hardness. .......................... 40 Optical Properties. ........................... 41 Design Information. .................... 42 Mechanical Design. ........................ 42 Stress Levels ............................... 42 Stress-Strain Calculations. ..................... 42 Bending Stress. ........................... 42 Tensile Stress. ............................ 42 Designing for Stiffness ........................ 45 Increasing Section Thickness. ................ 45 Adding Ribs to Maintain Stiffness. ............. 45 Designing for Sustained Load. .................. 46 Calculating Deflection. ...................... 46 Design Limits. .............................. 47 Stress Concentrations ...................... 48 Threads ................................. 48 Interference Fits ........................... 49 Calculating the Allowable Interference. .......... 49 Designing for Injection Molding. .............. 50 Wall Thickness. ............................. 50 Wall Thickness Variation. ...................... 50 Draft Angle. ................................ 51 Ribs. ..................................... 51 Coring .................................... 51 Bosses. ................................... 52 Snap-Fits. ................................. 52 Fabrication. ........................... 54 Drying. ................................... 54 Injection Molding. .......................... 56 Injection Molding Equipment. ................... 56 Screw Design. .............................. 56 Screw Tips and Check Valves. ................ 56 Nozzles ................................... 56 Molds. .................................... 56 Draft and Ejection. ......................... 56 Gates. .................................. 56 Venting. ................................. 56 Mold Temperature Control ................... 56 Machine Settings. ........................... 57 Injection Molding Temperatures ............... 57 Mold Temperatures. ........................ 57 Barrel Temperatures. ....................... 57 Residence Time in the Barrel ................. 57 Molding Process. ............................ 57 Feed Characteristics. ....................... 57 Back Pressure ............................ 57 Screw Speed. ............................ 57 Injection Rate and Venting ................... 58 Demolding ............................... 58 Mold Releases. ........................... 58 Shrinkage. ............................... 58 Regrind ................................... 60 Measuring Residual Stress. .................... 60 Extrusion Blow Molding. .................... 61 Drying. .................................... 61 Equipment. ................................ 61 Process Conditions .......................... 61 Extrusion ................................. 62 Predrying. ................................. 62 Extrusion Temperatures ....................... 62 Screw Design Recommendations. ............... 62 Die Design. ................................ 62 Extruded Product Types ...................... 62 Wire. ................................... 62 Film .................................... 62 Sheet. .................................. 63 Pipe and Tubing. .......................... 63 Start-Up, Shut-Down, and Purging. .............. 63 Start-Up Procedure ........................ 63 Shut-Down Procedure ...................... 63 Purging. ................................. 64 Thermoforming. ........................... 64 Compression Molding. ...................... 65 Rheology ................................. 55 ii Udel ® Polysulfone Design Guide www.SolvayPlastics.com
Secondary Operations . ................. 66 Cleaning and Degreasing ................... 66 Annealing. ................................ 66 Processing for Low Residual Stress. ............. 66 Annealing in Air. ............................. 66 Rapid Annealing. ............................ 66 Machining. ................................ 67 Coolants. .................................. 67 Drilling .................................... 67 Tapping ................................... 67 Sawing. ................................... 67 Turning. ................................... 67 Milling and Routing. .......................... 67 Finishing and Decorating. ................... 68 Painting ................................... 68 Electroplating. .............................. 68 Hot Stamping. .............................. 68 Printing. ................................... 68 Vacuum Metallizing. .......................... 68 Assembly and Joining. ...................... 69 Ultrasonic Bonding. .......................... 69 Hot Plate Welding. ........................... 69 Solvent Bonding. ............................ 70 Spin Welding ............................... 70 Adhesive Bonding ........................... 70 Mechanical Fasteners. ...................... 71 Molded-In Threads. .......................... 71 Threaded Inserts. ............................ 71 Self-Tapping Screws. ......................... 71 Ultrasonic Inserts. ........................... 72 Index. ................................ 73 Table of Contents Udel ® Polysulfone Design Guide iii
Page 1: Udel® Udel ® PSU Design Guide SPE
Page 6 and 7: List of Tables Table 1: Temperature
Page 8 and 9: vi Udel ® Polysulfone Design Guide
Page 10 and 11: Therefore, large amounts of inciden
Page 12 and 13: Approvals A number of organizations
Page 14 and 15: Table 2: Typical Properties (1) of
Page 16 and 17: Tensile Properties Tensile properti
Page 18 and 19: Figure 7: Glass Fiber Increases Fle
Page 20 and 21: After the impact the pendulum conti
Page 22 and 23: Long-Term Creep Properties The resp
Page 24 and 25: Thermal Properties The ways a mater
Page 26 and 27: Deflection Temperature Under Load O
Page 28 and 29: Thermal Conductivity Polymers in ge
Page 30 and 31: Combustion Properties UL 94 Flammab
Page 32 and 33: Thermal Stability Thermogravimetric
Page 34 and 35: Electrical Properties Many applicat
Page 36 and 37: Table 22: Short-Term Electrical Pro
Page 38 and 39: Figure 40: Tensile Elongation After
Page 40 and 41: Radiation Resistance Test specimens
Page 42 and 43: Stress Cracking Resistance To evalu
Page 44 and 45: Table 32: Environmental Stress Crac
Page 46 and 47: Table 34: Environmental Stress Crac
Page 48 and 49: Rockwell Hardness Rockwell hardness
Page 50 and 51: Design Information The rules for de
Page 52 and 53: Table 39: Area and Moment Equations
Page 54 and 55:
A typical rib design is shown in Fi
Page 56 and 57:
Stress Concentrations Classical mec
Page 58 and 59:
Designing for Injection Molding Bec
Page 60 and 61:
Bosses Bosses are protrusions off t
Page 62 and 63:
Fabrication Drying Polysulfone must
Page 64 and 65:
Injection Molding Figure 65: Screw
Page 66 and 67:
Injection Rate and Venting The inje
Page 68 and 69:
Regrind Sprues, runners, and discre
Page 70 and 71:
Extrusion Udel ® polysulfone can b
Page 72 and 73:
Purging Polysulfone can be easily p
Page 74 and 75:
Secondary Operations Cleaning and D
Page 76 and 77:
Finishing and Decorating Udel resin
Page 78 and 79:
Solvent Bonding Solvent bonding is
Page 80 and 81:
Figure 69: Boss Design for Self-Tap
Page 82 and 83:
G Gates . . . . . . . . . . . . . .
Page 86:
Specialty Polymers Worldwide Headqu
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Design Guide - Solvay Plastics

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