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SikaForce-420 L45, Non-Sagging Assembly Adhesive, Interior & Exterior, White, 415 mL

SikaForce-420 L45, Non-Sagging Assembly Adhesive, Interior & Exterior, White, 415 mL

Adhesives & Sealants
SIKA

Sika is a global leader in specialty chemicals for the construction and industrial sectors. The company develops and supplies innovative products and systems for bonding, sealing, damping, reinforcing, and protecting structures. With a strong focus on sustainability and performance, Sika serves a wide range of applications including concrete production, waterproofing, roofing, flooring, and structural strengthening.

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General Specifications
Packaging 415 mL
Usage Profile & Sandwich Panel Bonding
Usage Area Interior & Exterior
Color White
Chemical Base Polyol - Isocyanate
Storage Conditions +5 °C to +25 °C - Store in original, unopened, undamaged packaging in dry conditions. Always refer to packaging.
Density 1.54 g/cm3
Service Temperature N/A
Application Time 45 min.
Curing Time N/A
Application Thickness N/A
Application Method Manual
UV Resistant No
Moisture Resistant Yes
Mold Resistant N/A
Paintable No
Sealant No
Flexible Yes

Non sagging assembly adhesive

SikaForce-420 L45 is a high viscous 2-component polyurethane adhesive for assembling sandwich panels and similar constructions of various materials. SikaForce-420 L45 is tested according to FTP Code system and approved according to the IMO Marine Equipment Directives.  

  • Non sagging
  • IMO approved
  • Good gap filling properties
  • Solvent free
PRODUCT BENEFITS
  • Non sagging
  • IMO approved
  • Good gap filling properties
  • Solvent free
 
Usage
SikaForce-420 L45 is used primarily for assembling of profiles and sandwich constructions of e.g. glass fibre reinforced plastic, wood, metal, ceramic materials and pre-treated plastic materials. This product is suitable for experienced professional users only. Tests with actual substrates and conditions have to be performed, ensuring adhesion and material compatibility.  
Typical Product Data
Cure mechanism

Polyaddition

Mixing ratioby volumeby weight

100 : 25

100 : 19

Application temperature

15 – 30 °C

Pot-life (CQP536-3)

45 minutes A

Open time (CQP526-3)

90 minutes A

Press time (CQP590-4)1 MPa

170 minutes A

Shore D hardness (CQP023-1 / ISO 48-4)

77 B

Tensile strength (CQP543-1 / ISO 527)

16 MPa B

Elongation at break (CQP543-1 / ISO 527)

15 % B

Tensile lap-shear strength (CQP546-1 / ISO 4587)

11 MPa B

Component ASikaForce-420 L45Component BSikaForce-010
Technical Information
CURE MECHANISM

The curing of SikaForce-420 L45 takes place by a chemical reaction of the two components. Higher temperatures speed up the curing process and lower slow it down.

CHEMICAL RESISTANCE

In case of chemical or thermal exposure, conduct project related testing.
Application Information
Surface Preparation

Surfaces must be clean, dry and free from grease, oil, dust and contaminants. After the cleaning process, a physical or chemical pre-treatment might be required, depending on surface and type of material. The type of pre-treatment must be determined by tests.
Application

Volume and positioning of the adhesive must be defined in a way, that the intended gap is sufficiently filled after joining the parts. The specific applied quantity and position must be determined by tests.
The procedure for manual application is as follows: Ensure that the A-component is stirred thoroughly to avoid any sediment or separation, taking care not to stir too vigorously as this may introduce air into the product. Add the B-component in the specified ratio and stir thoroughly, ensuring a homogeneous mixture is achieved.

Apply before reaching half of the pot-life and join parts together within the open time. Consider that, if mixed in larger amounts, the exothermic reaction can reduce the pot-life and open time significantly.
For dual cartridges static mixer MFHX 08-24T or MFHX 10-24T has to be used. For automated applications, contact the System Engineering Department of Sika Industry.

 
Pressing

An adequate bonding pressure is necessary to obtain a voidless contact between the substrates and the adhesive. The specific pressure is, however, dependent on the core material and must be determined by tests. The pressure must always be below the maximum compressive strength of the core. After starting the press process, do not release the pressure until the press time has elapsed.
Removal

Uncured SikaForce-420 L45 may be removed from tools and equipment with SikaForce-096 Cleaner. Once cured, the material can only be removed mechanically.
Hands and exposed skin have to be washed immediately using hand wipes such as Sika Cleaner-350H or a suitable industrial hand cleaner and water.

Do not use solvents on skin.
STORAGE CONDITIONS

SikaForce-420 L45 has to be kept between 10 °C and 30 °C in a dry place. Do not expose it to direct sunlight or frost. After opening of the packaging, the content has to be protected against humidity.
The lowest allowed temperature during transportation is -20 °C for max. 7 days.