Product introduction

ARCHCELL® FR

ARCHCELL® is a closed-cell rigid PMI (Polymethacrylimide) foam, which used as the core of lightweight sandwich structure.

FR (Flame Retardant) is a grade suitable for flame retardant requirements. The foam is self-extinguishing inherently and is particularly suitable for the train, marine and aerospace industries. This grade is suitable for process conditions of 130°C and 0.3 MPa. It is also suitable for various curing processes (autoclave, vacuum bag, RTM, VARTM, VARI, HP-RTM, etc.). Also, it has good processability and can be easily thermoformed or CNC machined. The design of the cells in this grade and the closed cell structure of the foam ensure a good balance between peel strength and product weight of the sandwich structure parts.

TYPICAL PROPERTY VALUES

Properties	Unit	51 FR	71 FR	110 FR	Standard
Density	kg/m3	52	75	110	ISO 845
Density	lbs/ft3	3.25	4.68	6.87	ASTM D1622
Compressive Strength	MPa	0.73	1.59	2.88	ISO 844
Compressive Strength	psi	105.9	230.6	417.6	ASTM D1621
Tensile Strength	MPa	1.24	2.23	3.39	ISO 527-2
Tensile Strength	psi	179.8	323.4	491.6	ASTM D638
Shear Strength	MPa	0.62	1.25	2.17	DIN 53294
Shear Strength	psi	89.9	181.3	314.7	ASTM C273
Elastic Modulus	MPa	47.5	88.2	146.5	ISO 527-2
Elastic Modulus	psi	6887.5	12789.0	21242.5	ASTM D638
Shear Modulus	MPa	22.1	36.2	58	DIN 53294
Shear Modulus	psi	3204.5	5249.0	8410.0	ASTM C273
Elongation at Break	%	3.98	3.94	4.02	ISO 527-2
Elongation at Break	%	3.98	3.94	4.02	ASTM D638
HDT	℃	184.4	185.1	185.2	DIN 53424
HDT	°F	363.9	365.2	365.4	DIN 53424

The above technical data are typical values at nominal densities

Sales Range

Grade	Size（mm）	Standard Sheet Thickness（mm）	Possible Sheet Thickness （mm）
51 FR	2500*1250	90	1-155
71 FR	2500*1250	80	1-140
110 FR	2160*1100	70	1-115

Thickness Tolerance ±（0.5mm），others are available upon request