Körapop 250

Identification

Chemical Family

Silanes

GBU

EA

RTU Product Type

1K (1 component) Sealant,

1K (1 component) Adhesive,

Reactive Sealant,

Reactive Adhesive

Categories

Markets → Building & Construction → Applications → Building Materials → Construction Adhesives

Markets → Industrial → Applications → Chemical & Industrial Manufacturing → Equipment & Parts

Technologies → Adhesives & Sealants → Product Families → Bonding Technology → 1K Liquid Reactive Adhesives

Technologies → Adhesives & Sealants → Product Families → Sealing Technology → Reactive Sealants

Application Information

Cure Method

Moisture Cure

Applications

Application Area

Travel Trailers,

Metalworking Equipment,

HVAC Applications

Application Method

Cartridge Dispenser

Compatible Substrates & Surfaces

Glass,

Metal,

Plastics,

Wood,

Composites,

Steel,

Painted Surfaces,

Aluminum Alloys

Applications & Uses

Application Information

Applications	Fields of Application	Automotive
		Construction
		Industrial assembly
		Transportation
Processing	Suitable Substrates	Various galvanized steels
		Various aluminum alloys
		Various steel alloys
		Duroplastics
		Thermoplastics (except PE, PP, PTFE)
		Various composite materials (e.g. CFRP, GFRP)
		Glass
		Mineralic materials
		Wood
		Coated surfaces
	Consistency	Non-sagging Pasty
	Surface Requirements	Clean
		Free of grease
	Surface Cleaning	Körasolv GL
		Körasolv PU
		Körasolv WL
	Adhesion Promoter (absorbing surface)	Körabond HG 74 E
	Adhesion Promoter (non absorbing surface)	Körabond HG 83
	Application Method	Cartridge dispenser
	Product Overpaintability	No
	Product is free of	Solvents
Cleaning	Cleaner for Tools	Körasolv GL
		Körasolv PU
Hints	Resistance against UV Radiation	Not suitable for glass bonding with permanent UV radiation to the bonding area. Please ask your local sales office for products suitable for such applications
	Stress Cracking	Preliminary tests must be carried out on plastics with a tendency to stress cracking. (PMMA, ABS, PC or PS)
	Compatibility with Polystyrene Foams	Not suitable for bonding polystyrene foams. Please ask your local sales office for products suitable for such applications.

Cleaning Instructions

Clean tools immediately after use. Once cured, the material can only be removed mechanically. Appropriate cleaners are listed in the product properties.

Dimensioning

The required thickness of the adhesive layer depends on the expected maximum strength and joint movement. We recommend a minimum layer thickness of 2 mm.

Preparation

For some substrates the use of mechanical pretreatment and/or cleaner or primer is necessary to achieve good adhesion.

Processing

Low temperatures can cause a temporary increase in viscosity resulting in reduced extrusion and slower curing rates.

Features

Ready-to-Use Product Features

Excellent Elasticity,

Excellent Moisture Resistance,

Excellent Strength,

Exceptional UV Resistance,

Good Flexibility,

Good Sagging Resistance,

Good Weather Stability,

Heat Resistance,

High Flexibility,

Paintable,

UV Resistant,

Improved Ageing Resistance,

Good Cold Resistance

Packaging & Availability

Country Availability

Germany

Regional Availability

• North America

Physical Properties

Physical Form

Paste

Properties

Density:

1300 kg/m³

Solid Content:

100 %

Specific Gravity:

1.3

Strain at Break:

350 %

Tear Strength:

23 kN/m

Tensile Strength:

4.7 MPa

Physical Properties

	Value	Units	Test Method / Conditions
Density	1.3	g/cm³	-
Solid Content	100.0	wt %	-
Specific Volume Resistance	8 x 10⁶	Ω.cm	Kö-test method 100262

Cured Properties

	Value	Units	Test Method / Conditions
Curing to Depth (within first 24 h)	3.0	mm/d	Climate according to DIN 50014
Elongation at Break	350.0	%	DIN EN ISO 527
Hardness (after 28d, thickness of specimen = 6 mm)	56.0	-	DIN ISO 7619-1, Shore A
Lap Shear Strength (substrates: aluminum/aluminum)	3.9	MPa	DIN EN 1465
Skin Formation Time	10.0	min	Kö-test method 100109, Climate according to DIN 50014
Tear Strength	23.0	N/mm	ASTM D624
Tensile Strength	4.7	MPa	DIN EN ISO 527

Recommended Operating Conditions

	Value	Units	Test Method / Conditions
Service Temperature	-60 to 90	°C	-
Short-Term Temperature Resistance (60 min)	120.0	°C	-

Processing Parameters

	Value	Units	Test Method / Conditions
Processing Temperature	5 - 35	°C	-
Recommended Minimum Layer Thickness	2.0	mm	-
Required Squeezing Pressure	4 - 5	bar	-
Storage Temperature	5 - 25	°C	-

Storage & Handling

Storage Conditions

Körapop 250 should be used within the shelf life specified on the packaging. The storage stability only applies to material stored in original unopened containers, at storage temperature 5°C to 25°C.