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DCPD Injection Molding – Dicyclopentadiene

September 10, 2017

The DCPD RIM process can provide large parts in low pressure molds with the mechanical property performance similar to injection molded engineered thermoplastics. The combination of DCPD process and material capabilities result in a new design freedom for replacing traditional materials such as metal, wood and fiberglass.

Injection molded engineering thermoplastics have a similar benefit package for smaller parts. Small parts for DCPD material are in the 8 to 10 ft² (1 m²) range which is the upper end for cost and size capability for standard injection molding. In addition, DCPD parts do not require identical part geometry for multi-cavity molds.

Features Target Applications
High Strength to Weight Ratio Hoods & Covers
High Toughness Protective Shields
High Impact Resistance Fan Shrouds
Primed / High-Gloss Paint Body Panels
Large Complex Parts High Impact & High Toughness Applications
B-Side Geometry

 

● Surface areas up to 120ft2
● Large part moldability
● Variable wall thickness
● Part thickness up to 12 inches
● Low stress molding
● Reduced parts vs. steel
● No rust or dents
● Excellent Impact Strength & Durability
● Outstanding surface finish
● Maintain tight tolerances
● Light weight and repairable
● High abuse applications
● Post applied painting needed for class-A finish.

Markets & Applications: Agricultural Components, Construction Equipment, Septic Tanks &
Components, Heavy Truck Components & Fascia’s, Air Deflectors, Automotive Pallets & Racks and
Medical and Electrical Housings.

The Mold Process

●   Injection time is 15 to 20 seconds
●   700 pound (320 kg) Part Demonstrated
●   Part Size is limited by machine flow rate and part thickness
●   Part fully cured in 1 minute
●   Cycle time is typically 4 to 6 minutes
●   No post cure needed.

Typical Properties for DCPD

DCPD
Density, g/cc 1.03
Flexural Modulus, ksi 273
Tensile Strength, ksi 6.8
Yield Strain, % 4.7
Notched lzod, ft.-lb./in 6
Plate Impact, ft-lbs 34.1
Flexural Strength, ksi 10.1
Tensile Modulus, ksi 275
CLTE X 10–6, in/in/°F 48.8

 

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