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Rifeng® W

Rifeng® W specially developed for use as a structural core in connection with vacuum infusion processes. It is used for infusion components in aerospace applications and in sports equipment and automotive structures.
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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:

Rifeng® WH

Rifeng® F

Rifeng® WF

Rifeng® E-Li

Rifeng® X



      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.


                                                                                                                                                                                                                                                       

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