Rifeng® W is a closed-cell rigid PMI foam base on Polymethacrylimide (PMI) polymer, that is completely free of CFC's. It's with Medium Cell Size.
Rifeng® W is specially developed for use as a structural core in connection with vacuum infusion processes, such as VARI and RTM. Its mechanical and thermomechanical properties are similar to the Rifeng® WH. Its cell size which is smaller, achieves an optimal compromise between low resin absorption (about 35% less than for Rifeng® WH), and satisfactory bonding of the facings to the core.
With outstanding mechanical strength, it is used for infusion components in aerospace applications and in sports equipment and automotive structures. Also is an ideal sandwich core material for UAV(unmanned aerial vehicle), radomes, shipbuilding and other industrial applications. Moreover, in the medical technology application, Rifeng® W is a common core material for X-ray and CT table tops.
The high density Rifeng® W PMI foam core material suitable for underwater buoyancy materials.
Processing and Production
The optimized cell structure of Rifeng® W makes it particularly suitable for vacuum infusion and RTM processes, where it can be used at temperature up to 180°C with pressure up to 0.7 MPa after heat treatment.
Weight Saving
Rifeng® W featuring a fine cell structure, make sure it takes up minimal resin at the surface where the cells have been cut open during core shaping. Less resin take-up during part processing means lower final part weight and reduced overall cost.
Thermoforming and Shaping
Rifeng® W can be easily thermoformed or CNC machined to meet customer requirements. High precision, pre-shaped and ready-to-use foam cores in simple or complex geometries can also be supplied by us.
Mechanical Properties
Property | Test Method | Unit | Rifeng® 32W | Rifeng® 52W | Rifeng® 75W | Rifeng® 110W | Rifeng® 200W |
Density | ISO 845 | Kg/m3 | 30±4 | 52±5 | 75±7 | 110±10 | 200±20 |
Compressive Strength | ISO 844 | MPa | 0.45 | 0.85 | 1.75 | 3.65 | 9.75 |
Tensile Strength | ASTM D638 | MPa | 0.85 | 1.70 | 2.25 | 3.65 | 7.10 |
Elastic Modulus | ASTM D638 | MPa | 40 | 85 | 110 | 198 | 380 |
Elongation at Break | ASTM D638 | % | 2.5 | 2.8 | 2.8 | 2.8 | 3.0 |
Flexural Strength | ASTM D790 | MPa | 0.85 | 1.65 | 2.95 | 5.25 | 13.00 |
Shear Strength | ASTM C273 | MPa | 0.45 | 0.85 | 1.30 | 2.4 | 5.00 |
Shear Modulus | ASTM C273 | MPa | 20 | 35 | 50 | 85 | 160 |
Heat distortion resistance | DIN 53424 | ℃ | ≧200 | ≧200 | ≧200 | ≧200 | ≧200 |
● Technical data values presented are typical for nominal density, subject to normal manufacturing variations.
● Density values are valid for full-size sheets with a minimum thickness of 10 mm(0.39 inch) only. Other density ranges are available upon request.
Sales range for Rifeng® W
Rifeng® W | Size (mm) | Thickness (mm) |
32W | 2500 x 1250 | 1~80 |
52 W | 2500 x 1250 | 1~120 |
75 W | 2500 x 1250 | 1~100 |
110 W | 2160 x 1100 | 1~90 |
200W | 1900 x 900 | 1~60 |
● All dimension ranges presented in these tables are standard. To discuss any size or thickness not listed, please contact a Rifeng® representative.
● Thickness tolerance +/- 0.2 mm, length / width tolerance ± 10 mm, other tolerances available on request.
● 1-4 mm thick sheets supplied in 1/4 or 1/2 sheet size.
Related products:
Aerospace
Unmanned Aerial Vehicles (UAV's), Business Jets, Commercial and Military Aircraft
● Flight Control Surfaces - Leading Edges, Trailing Edges, Ailerons, Flaps, Winglets, Vertical and Horizontal Stabilizers
● Airframe - Hat Stiffeners/Stringers, Longerons
● Landing Gear Doors
● Radomes
Helicopter
● Main and Tail Rotor Blades
● Floor and Body Panels
● Structural Elements
Spacecraft, Launch Vehicles, Rockets, Missles
● Payload Accessories
● Main Body Shell Panels
● Guidance Airfoils/Fins
● Structural Elements
Communication
● Satellites
● Radomes
Medical Imaging
● X-Ray & CT Beds
● Mammography Plates
● Fixating Devices
Automotive Industry
● Structural Elements
● Body Panels
● Airfoils/Splitters
Sports & Leisure Equipments
● Surf Boards, Skateboards, Skis, Cross-Country Skis, Bows, Windsurfers,Rackets, Racing Bike, Snowboards, Hockey/Lacrosse Sticks, Hockey
Blades & Pucks, Wake Boards, Knee Boards, Cycling Frames/Forks/Heads, Bicycle wheel, etc.
The high density Rifeng® W PMI foam core material suitable for underwater buoyancy materials.
