A. Schulman Gapex® RPP20EU31UL 20% Fiberglass Reinforced, Chemically-Coupled, Impact-Modified Polypropylene

Login to see your most recently viewed materials here. Or if you don't have an account with us yet, then click here to register.

A. Schulman Gapex® RPP20EU31UL 20% Fiberglass Reinforced, Chemically-Coupled, Impact-Modified Polypropylene
Categories:	Polymer; Thermoplastic; Polypropylene (PP); Polypropylene with 20% Glass Fiber Filler
Material Notes:	20% Fiberglass Reinforced, Chemically-Coupled, Impact-Modified Polypropylene Description: Black Comments: Testing and measurements were performed at 73 ± 3°F and 50± 5% relative humidity unless otherwise noted. Filler Content: 20%; ASTM D2584 Material Pre-dry: Normally it is not necessary to pre-dry this material. However, if conditions dictate drying to optimize material properties and part appearance then dry in a desiccant dryer at 180°F for 2-3 hours or 160°F for >4 hours. Manifolds: Maintain manifolds, runners and tips 10 to 20°F above the front one temperature to allow easier filling. (Gate drool is best eliminated using screw decompression rather than reducing tip temperature.) Back Pressure (Range): 20-50 psi. Injection Speed: medium to slow > depending on surface appearance. Screw Speed: medium. Injection Pressure: Adjust to just above a short shot. Injection Time: Adjust to just above a short shot. Cushion (Range): 0.2-0.5 in. Nozzle Type: Free flowing/Standard. Some conditions may have to be altered to obtain acceptable parts. Please do not run too cold, molded in stress and rough surface may become a problem. If you must run below melt or temperatures recommended for dimensional precision you may compromise impact and esthetics. Retest parts to confirm performance. Data provided by Ferro Corporation - Specialty Plastics Group. A. Schulman has acquired the Ferro specialty plastics business.
Vendors:

Available Properties

Density, ASTM D792
Linear Mold Shrinkage, ASTM D955
Melt Flow, ASTM D1238
Tensile Strength, Ultimate, ASTM D638
Elongation at Break, ASTM D638
Flexural Yield Strength, ASTM D790
Flexural Modulus, Tangent; ASTM D790
Flexural Modulus, 1% Secant, ASTM D790
Izod Impact, Notched, ASTM D256
Izod Impact, Unnotched, ASTM D4812
Gardner Impact, ASTM D5420, M.F.E.
Deflection Temperature at 0.46 MPa (66 psi), ASTM D648
Deflection Temperature at 1.8 MPa (264 psi), ASTM D648
Rear Barrel Temperature
Middle Barrel Temperature
Front Barrel Temperature
Nozzle Temperature
Mold Temperature, Core. Cooler temperatures may be needed to maintain dimensions or eliminate sinks in thick sections.
Mold Temperature, Cavity
Drying Temperature, 2-3 hrs at 180°F or 4+ hours at 160°F.
Dry Time

Property Data

This page displays only the text
of a material data sheet.

To see MatWeb's complete data
sheet for this material (including
material property data, metal
compositions, material suppliers,
etc), please click the button below.

Manufacturer Notes:
A. Schulman, Inc., former Ferro Corporation

Category Notes
Plastic

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

	Advertise with MatWeb!
	Data sheets for over 180,000 metals, plastics, ceramics, and composites.
	HOME • SEARCH • TOOLS • SUPPLIERS • FOLDERS • ABOUT US • FAQ • LOG IN

System Message