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Rifeng® WH

Rifeng® WH has been designed for use primarily in aerospace applications. Its outstanding properties make it an ideal material solution for aircraft components.
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Rifeng® WH is a closed-cell rigid foam base on Polymethacrylimide (PMI) polymer, that is completely free of CFC’s. It's with Coarse Cell Size. Excellent machinability and surface adhesion, As sandwich structure material, it has good fastness to be combined with skin.

 

Rifeng® WH has been designed for use primarily in aerospace applications. Its outstanding properties make it an ideal material solution for aircraft components, including stringer structures in pressure bulkheads. This structural foam is also suitable for helicopter applications and is frequently used in the main and tail rotor blades, as well as fuselage panels.

 

Processing and Production

Rifeng® WH core makes it possible to produce sandwich components in a single step (co-curing), resulting in reduced overall production time. Rifeng® WH can take curing temperatures up to 130 °C and pressures up to 0.7 MPa. After heat treatment, Rifeng® WH-HT can even be used at curing temperatures of 180 °C and at pressures of 0.7 MPa.

 

Rifeng® WH is highly suited to autoclave technologies and vacuum infusion processes, including RTM and VARTM processes.

 

Weight Saving

When building composite sandwich components, lightweight Rifeng® WH has a closed cell structure that ensures the resin stays exactly where you want it – in the interface. This eliminates excess and unnecessary resin that adds undesirable weight to the finished part.

 

Thermoforming and Shaping

Rifeng® WH 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®

52WH

Rifeng®

75WH

Rifeng®

110WH

Density

ISO 845

Kg/m3

52±5

 

75±7

110±10

Compressive Strength

ISO 844

MPa

0.85

 

1.80

3.60

Tensile Strength

ASTM D638

MPa

1.70

 

2.30

3.65

Elastic Modulus

ASTM D638

MPa

80

 

109

186

Elongation at Break

ASTM D638

%

2.6

 

2.8

2.8

Flexural Strength

ASTM D790

MPa

1.75

 

2.95

5.20

Shear Strength

ASTM C273

MPa

0.85

 

1.35

2.45

Shear Modulus

ASTM C273

MPa

35

 

55

85

Heat distortion resistance

DIN 53424

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® WH

Rifeng® WH

Size

(mm)

Thickness

(mm)

52 WH

2500 x 1250

 

1~120

75 WH

2500 x 1250

 

1~100

110 WH

2060 x 1100

 

1~90

● 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® W Series

Rifeng® F Series

Rifeng® WF Series

Rifeng® E-Li Series

Rifeng® X Series



       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


                                                                                                                                                                                                                                                       

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