POLYESTER 30% GLASS (POLYBUTYLENE TEREPHTHALATE) (PBT) | ||||
CELANEX 30% GLASS-FIBER REINFORCED FLAME RETARDANT POLYESTER -3310-2 (PBT) | ||||
Ticona Celanese/ Celanex 30% Glass-Fiber Reinforced Flame Retardant Polyester -3310-2 | ||||
PBT polyesters are semi-crystalline. They are versatile materials with a good balance of mechanical and electrical properties. They have excellent electrical properties and are abrasion resistant. Dimensional stability is significantly better than nylon, especially in humid environments. PBT performs much like nylon but can handle higher temperatures and does not absorb moisture. PBT has excellent impact strength but is very notch sensitive. | ||||
APPLICATIONS | ||||
Automotive, appliance, electrical, and electronics. | ||||
Properties | ||||
Physical | Units | Test Method | Data | |
Specific Gravity | ASTM D792 | 1.66 | ||
Water Absorption @ 24 Hour Immersion | % | ASTM D570 | 0.07 | |
Water Absorption @ Equilibrium | % | ASTM D570 | 0.25 | |
Mold Shrinkage, Flow Direction, 1/8 in thick | in/in x 10-3 | 3-5 | ||
Mechanical @ 73°F | Units | Test Method | Data | |
Tensile Strength @ Break | psi | ASTM D638 | 19,500 | |
Tensile Modulus | 106 psi | ASTM D638 | 1.7 | |
Elongation @ Break | % | ASTM D638 | 1.5 | |
Flexural Strength | psi | ASTM D790 | 28,000 | |
Flexural Modulus | 106 psi | ASTM D790 | 1.5 | |
Compressive Strength | psi | ASTM D695 | 18,000 | |
Shear Strength | psi | ASTM D732 | 8,900 | |
Izod Impact Strength, Notched | ft-lb/in | ASTM D256 | 1.3 | |
Izod Impact Strength, Unnotched | ft-lb/in | ASTM D256 | 4 | |
Tensile Impact Strength | ft-lb/in2 | ASTM D1822 | 48 | |
Taber Abrasion | mg/1000 cycles | ASTM D1044 | 40 | |
Rockwell Hardness | M Scale | ASTM D785 | 90 | |
Coefficient of Friction Against Metals, Dynamic | 0.10-0.13 | |||
Thermal | Units | Test Method | Data | |
Heat Deflection Temperature (66 psi) | °F | ASTM D648 | 442 | |
Heat Deflection Temperature (264 psi) | °F | ASTM D648 | 406 | |
Coefficient of Linear Thermal Expansion 32°F-284°F | in/in/°F x 10-5 | ASTM D696 | 0.8 | |
Deformation Under Load @ 122°F, 24 Hours, 2,000psi | % | ASTM D621 | 0.3 | |
Deformation Under Load @ 122°F, 24 Hours, 4,000psi | % | ASTM D621 | 0.4 | |
Electrical | Units | Test Method | Data | |
Volume Resistivity | ohm-cm | ASTM D257 | 5 x 1015 | |
Dielectric Strength | volt/mil | ASTM D149 | ||
1/8 in Thickness, 73°F, 50% RH | 490 | |||
1/8 in Thickness, 73°F, 90% RH | 460 | |||
1/8 in Thickness, 73°F, 6 Weeks in 73°F Water | 450 | |||
1/8 in Thickness, 150°F, 50% RH | 470 | |||
1/8 in Thickness, 250°F, 50% RH | 460 | |||
Dielectric Constant, 100 Hz | ASTM D150 | 3.9 | ||
Dissipation Factor, 100 Hz | ASTM D150 | 0.006 | ||
Rating or Property (Underwriters Laboratories Ratings) | Units | Test Method | Data | |
Temperature Indices | ||||
Electrical | °C | 140 | ||
Mechanical w/Impact | °C | 130 | ||
Mechanical w/o Impact | °C | 140 | ||
Arc Resistance | seconds | 123 | ||
Comparitive Tracking Index | volts | 280 | ||
Hot Wire Ignition | seconds | 73 | ||
High Amp Arc Ignition | arcs | 200 + | ||
High Voltage Track Rate | in/min | 8.2 | ||
Flammability @ 1/32" | UL 94 | V-0 | ||
UL 94-5V, Min. Thickness , In. | 0.058 | |||