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  • Design of Plastic Gears (.pdf)
    Property Chart for Basic Polymers for Gearing. Tensile. Izod. Water. Coeff. of. Mold Strength Flexural Impact Deflect. Linear. Specific. Absorp. Shrinkage * Yield Modulus Strength Temp. Thermal Gravity. 24hrs. • Break. Notched @24psi Expan. Units. %. in./in. psi. psi. ft⋅lb/in. °F. 10– °F. ASTM. D70
  • High-specific-gravity thermoplastics open new design windows
    Advanced materials and processes continue to push the performance limits of engineered plastics. Here are some recent developments and a few design tips to get the most from that plastic part. Thermoplastics have been used to decrease part weight and part count or both. Once a base resin has been
  • Proper Use Of Plastic Gears (.pdf)
    Property Chart for Basic Polymers for Gearing. Tensile. Izod. Water. Coeff. of. Mold Strength Flexural Impact Deflect. Linear. Specific. Absorp. Shrinkage * Yield Modulus Strength Temp. Thermal Gravity. 24hrs. • Break. Notched @24psi Expan. Units. %. in./in. psi. psi. ft⋅lb/in. °F. 10– °F. ASTM
  • Medical Device Link .
    with specific gravities ranging form 1.7 to 10, these "heavy " composites enable designers to combine functions and tune the weight of parts. According to Paul Blanchard, marketing manager, "the ability to add weight to functional plastic parts provides designers with new productivity opportunities. With LNP's
  • Medical Device Link .
    of Plastics. Resins are described by many physical properties. Some of the most common ones are the following. Density and Specific Gravity. Related measurements concerned with mass per volume. As a dimensionless number, specific gravity is a good way to compare materials. Water Absorption. The percent
  • Medical Device Link .
    injection molder Thogus Products Co. (Avon Lake, OH; www.thogus.com), GE Plastics is developing new grades of the thermoplastic that match the specific gravity of lead. The companies are also researching the creation of an elastomeric grade with high elongation for even greater design flexibility
  • Jamak Develops Fiber Reinforced Elastomer for Oil and Gas use
    applications. ï (R) Typical Physical Properties ï (R) Elastomer Conv. FRSE ï (R) Hardness 58 75 ï (R) Tensile 1285 1102 ï (R) Tear 114 151 ï (R) Elongation 421 347 ï (R) 25% Modulus 132 387 ï (R) 100% Modulus 1285 1102 ï (R) Specific Gravity 1.25 1.19 The chosen formulation was also evaluated
  • Medical Device Link . Material Considerations for Flexible Joint Design
    comparison. Property ASTM Method Units ETPU PA PEI PP HDPE Specific gravity D 792 g/cc 1.19 1.06 1.27 0.882 0.950 Melt-flow rate D 1238 g/10 min N/A 25a N/A 24b 12c Tensile yield D 638 MPa (psi) 50 (7000) 76 (11,000) 105 (15,200) 33(4800) 24 (3500) Elongation yield D 638 % 6 10d 7 8 18 N