Sika Primer-209 N is a solvent-based black primer which reacts with moisture and forms a thin layer. This layer acts as a link between substrates and adhesives.
Sika Primer-209 N is specifically formulated to treat bond faces before applying Sika’s 1-component Polyurethanes. This primer might provide excellent adhesion on certain plastic substrates without the previous activation step.
Sika Primer 209 N – Areas of Application
Sika Primer-209 N improves adhesion on many plastics and paints such as ABS, PMMA, PC and, acrylics, alkyds/melamine varnishes.
Due to the wide variety of plastics, it is mandatory to perform preliminary tests on original substrates under production conditions.
Seek the manufacturer’s advice and perform tests on original substrates before using Sika® Primer-209 N on materials prone to stress cracking.
This product is suitable for experienced professional users only. Tests with actual substrates and conditions have to be performed to ensure adhesion and material compatibility.
Sika Primer 209 N – Typical Product Data
| Chemical base | Solvent-based Polyurethane solution
|
|
| Colour (CQP001-1) | Black | |
| Solid content | 38 % | |
| Application temperature | 5 ─ 40 °C
|
|
| Application method | Brush, felt or foam applicator.
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|
| Consumption | 50 ml/m2
|
|
| Flash-off time | minimum
maximum
|
30 minutes A
24 hours A
|
| Shelf life | 9 months B
|
| CQP = Corporate Quality Procedure | A) 23 °C / 50 % r. h. | B) stored in sealed container in up-right position in a dry place at ≤ 25 °C |
IMPORTANT NOTE FOR Sika Primer 209 N
Sika Primer-209 N is a moisture-reactive system. In order to maintain product quality, it is important to reseal the container with the inner plastic liner immediately after use. Once the surface pre-treatment operation is completed, the cap has to be screwed on.
Dispose of the product of approximately one month after opening if used frequently or after two months in case of infrequent use. 30 ml cans are for a single application only.
If gelling, separation or a significant increase in viscosity is noted, discard the primer immediately.
Never dilute or mix this product with any other substances.
If used on transparent or translucent substrates such as plastics, etc., an adequate UV protection is mandatory.
APPLICATION METHOD FOR Sika Primer 209 N
Surfaces must be clean, dry and free from grease, oil, dust and contaminants.
Adhesion on substrates may be improved by adding and/or combining pre-treatment processes such as scuffing, cleaning and activating.
Application
Shake the Sika Primer-209 N can very thoroughly until mixing ball rattles freely. Continue shaking for another minute and apply a thin but covering coat with a brush, felt or foam applicator.
Ideal application and surface temperature are between 15 °C and 25 °C.
Sika® Primer-209 N has to be applied once only. Care must be taken to ensure that this single application adequately provides dense coverage. Consumption and method of application depend on the specific nature of the substrates. Tightly reseal container immediately after each use.
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