KremGuard_EN | KREMPEL

Composite materials have become essential to mobility, enabling a range of innovations. In addition to lightweight properties, safety is the top priority when it comes to aircraft, rail or electric cars. A fire can have catastrophic consequences, in an emergency, every second counts for saving lives. The materials used in the aerospace, rail and automotive industries must therefore meet strict requirements for Fire, Smoke & Toxicity (FST) i.e. flammability, smoke density and smoke toxicity.

Our latest composite innovation, the epoxy resin-based prepreg system KremGuard, redefines the standards for low flame propagation, low smoke development and low toxicity.

Meets the highest FST fire protection requirements – flammability,
heat release and smoke development are reduced to a minimum
Excellent mechanical properties
Free from phenol, formaldehyde and halogens
Ideal choice for structural components and honeycomb sandwiches
Homogeneous, non-porous surface
Improved storability and shelf life compared to traditional phenolic systems

KremGuard - das Beste aus Epoxid und Phenol

During development, we combined the best properties of epoxy and phenol. The result: KremGuard.

Above all, KremGuard fulfills high fire and heat protection requirements. Even in complex composite structures, KremGuard is non-flammable, conducts little heat and generates hardly any smoke or toxic gases. These properties are achieved without the use of phenols, formaldehyde and halogens that harm our health and the environment. In addition, it has excellent mechanical properties and can be easily processed, even in the case of complex component shapes. The homogeneous, nonporous
surface can easily be coated, and integrated into your design. This makes KremGuard the optimum basis for use in interiors, exteriors, structural components and sandwich structures. Moreover: KremGuard outperforms existing phenolic systems at room temperature in terms of storability and shelf life.

KremGuard therefore sets a new standard for safety in the air, by rail and in terms of battery-operation on the road.

The strict safety and quality standards that are a prerequisite for applications in aircraft and trains are guaranteed with KremGuard: FAR 25, AIMS, AITM and EN45545 up to the highest classification HL3. In addition, KremGuard has been subjected to comprehensive testing with the UL Torch & Grid test. The result: KremGuard meets stringent fire protection requirements in a variety of applications, including automotive components and battery housings.

Aviation

FAR 25
AIMS (Airbus Industries Material Specification)
AITM (Airbus Industries Test Method)

Railway

EN 45545 HL3, R1, R7, R17

Industry

UL-94 V0

Prepregs
Rigid laminates / laminate panels
Sandwich panels and components with a honeycomb structure
Components

Test/Property

Unit

Result

Requirement

Standard

Burn length (12 s ignition time)

203

AITM 2.0002-B

After flame time (12 s ignition time)

AITM 2.0002-B

Drips (12 s ignition time)

yes/no

nein

AITM 2.0002-B

Burn length (60 s ignition time)

152

AITM 2.0002-A

After flame time (60 s ignition time)

AITM 2.0002-A

Drips (60 s ignition time)

yes/no

nein

AITM 2.0002-A

Smoke density

200

AITM2-0007

Heat release rate max

kW/m²

< 65

AITM2-0006

Heat release - 2 min

kW*min/m²

< 65

AITM-0006

Toxicity Test

HCN (ppm)

150

AITM3-0005

Toxicity Test

CO (ppm)

121

1000

AITM3-0005

Toxicity Test

NOx (ppm)

100

AITM3-0005

Toxicity Test

SO2 (ppm)

100

AITM3-0005

Toxicity Test

HF (ppm)

100

AITM3-0005

Toxicity Test

HCI (ppm)

150

AITM3-0005

The values given are typical values based on specific test specimens. Technical modifications reserved.

Test material	Test	Result in N/mm²	Requirement in N/mm²	Standard
Unconditioned laminate	Flexural strength - warp direction	539,8	>450	ISO 178
Unconditioned laminate	Flexural strength - weft direction	467,6	>360	ISO 178
Unconditioned laminate	E-Modul - warp direction	23188	>19000	ISO 178
Unconditioned laminate	E-Modul - weft direction	21653	>17000	ISO 178
Laminate in Skydrol 500 h	Flexural strength - warp direction	585	>360	ISO 178
Laminate in Skydrol 500 h	E-Modul - warp direction	24104	>17000	ISO 178
Laminate in destilled water 500 h	Flexural strength - warp direction	548	>370	ISO 178
Laminat in destilled water 500 h	E-Modul - warp direction	23551	>17000	ISO 178
Honeycomb LN 29967 A4 9,4	Flexural strength - warp direction	1040	>700	AITM 1-0018

The values given are typical values based on specific test specimens. Technical modifications reserved.

KremGuard can be used for robust walls, frames, doors and air conditioning ducts that effortlessly withstand everyday stresses. KremGuard combines long-lasting performance with aesthetic design.