• Rifeng CR
  • Rifeng CR
Description

Self-Extinguishing PMI Structural Foam
Rifeng CR is a closed-cell rigid foam base on Polymethacrylimide (PMI) polymer, that is completely free of CFC’s. It's with Coarse Cell Size. Rifeng FR is Self-extinguishing and articularly suitable for applications in rail vehicles and watercraft, as well as use in the aerospace industry.

Processing and Production
Rifeng CR can withstand medium temperature curing process with maximum temperature of 180℃ and maximum pressure of 0.7 MPa (dependent upon density). It’s suitable for curing methods such as autoclave, vacuum bag, RTM, VARTM, VARI, HP-RTM, etc.

Weight Saving
When building composite sandwich components, lightweight Rifeng CR 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 CR 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 52CR

Rifeng 75CR

Rifeng 110CR

Density

ASTM D1622

Kg/m3

52±12

75±15

110±20

Compressive Strength

ASTM D1621

MPa

0.9

1.5

3.0

Compressive Strength

ASTM D1621

MPa

50

75

130

Tensile Strength

ASTM D638

MPa

1.3

2.2

3.5

Tensile Modulus

ASTM D638

MPa

60

96

160

Elongation at Break

ASTM D638

%

3.5

3.5

3.5

Shear Strength

ASTM C273

MPa

0.8

1.3

2.3

Shear Modulus

ASTM C273

MPa

25

40

55

Heat distortion

DIN 53424

≧200

≧200

≧200

  • Technical data values presented are typical for nominal density, subject to normal manufacturing variations, not applicable for designing and acceptance. Please contact our QA team for material criterion and standard.
  • 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 CR

Rifeng WH

Size (mm)

Thickness (mm)

52 CR

2500 x 1300

1~100

75 CR

2500 x 1300

1~90

110 CR

2500 x 1300

1~80

  • 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 ± 2 mm, other tolerances available on request.