Körapop 225-2K is a two-component adhesive and sealant based on silane-modified polymer chemistry. It is a non-sagging, elastic product that offers good strength and high flexibility. This adhesive provides exceptional adhesion to many substrates without requiring primers. The product also boasts outstanding UV, weather, and aging resistance.

Chemical FamilySilanes

Product Type2K (2 component) Adhesive, 2K (2 component) Sealant, Reactive Adhesive, Reactive Sealant

Application AreaHVAC Applications, Metalworking Equipment, Travel Trailers

Compatible Substrates & SurfacesAluminum Alloys, Glass, Metal, Painted Surfaces, Plastics, Steel, Wood

FeaturesExcellent Elasticity, Excellent Moisture Resistance, Excellent Strength, Exceptional UV Resistance, Good Cold Resistance, Good Flexibility, Good Sagging Resistance, Good Weather Stability, High Flexibility, Improved Ageing Resistance, Paintable, UV Resistant

Technical Data Sheet

Enhanced TDS

Identification & Functionality

Chemical Family

Features & Benefits

Applications & Uses

Cure Method
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

Using side-by-side cartridge with static mixer
via two part mixing and metering systems

Product Overpaintability

Wet-in-wet (depending on paint)

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.

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.

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.

Properties

Physical Form
Physical Properties
ValueUnitsTest Method / Conditions
Glass Transition Temperature-64.0°CDIN EN ISO 6721-1
Cured Properties
ValueUnitsTest Method / Conditions
Pot Life (with Köracur 310 N)20.0min
Pot Life (with Köracur 310 L)40.0min
Pot Life (with Köracur 310 SL)60.0min
Change in Volume-3.0%DIN EN ISO 10563
Hardness (after 14d)36.0DIN ISO 7619-1, Shore A
Tensile Strength2.6MPaDIN EN ISO 527
Elongation at Break450.0%DIN EN ISO 527
Tear Strength18.0N/mmASTM D624
Processing Parameters
ValueUnitsTest Method / Conditions
Mixing Ratio (Part A:Part B, by volume)10:1
Processing Temperature5 - 35°C
Recommended Minimum Layer Thickness2.0mm
Recommended Operating Conditions
ValueUnitsTest Method / Conditions
Service Temperature- 60 - 90°C
Short-Term Temperature Resistance (60 min)120.0°C
Physical Properties

Part A Körapop 225

Physical Properties

   
Density 1.4 g/cm3 DIN EN 542
Solid-content by weight 100%  

Processing Guidelines and Parameters

   
Storage Temperature 5 °C to 25 °C  

 

Part B Köracur 310 N

Physical Properties

   
Density 1.49 g/cm3 DIN EN 542

Processing Guidelines and Parameters

   
Storage Temperature 15 °C to 25 °C  

 

Part B Köracur 310 L

Physical Properties

   
Density 1.49 g/cm3 DIN EN 542

Processing Guidelines and Parameters

   
Storage Temperature 15 °C to 25 °C  

 

Part B Köracur 310 SL

 

Physical Properties

   
Density 1.49 g/cm3 DIN EN 542

Processing Guidelines and Parameters

   
Storage Temperature 15 °C to 25 °C  

Technical Details & Test Data

Curing of Körapop 225-2K

Körapop 225-2K - Curing of Körapop 225-2K

Curing of Körapop 225-2K with different boosters, build up of Shore A

Packaging & Availability

Regional Availability
  • Asia Pacific (Excluding Russia)
  • Australia
  • Canada
  • China
  • Europe (Excluding Russia)
  • Japan
  • Korea
  • Malaysia
  • North America
  • Philippines
  • USA

Storage & Handling

Storage Conditions

Körapop 225-2K should be used within the shelf life specified on the packaging. The storage stability only applies to material stored under appropriate conditions (original unopened containers, recommended storage temperature).