SikaForce®-7800 Red & BlueSURFACE FILLING AND REPAIR Fast sanding Erosion resistant Easy to mix and apply

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Application window for SikaForce®-7800 Blue

Temperature [°C]

10

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50

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80

00 5 10 15 20 25 30 35 40

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Application window for SikaForce®-7800 Red

Temperature [°C]

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PRODUCT DESCRIPTIONSikaForce®-7800 Red and Blue are two-component polyurethane surface fillers used for final profilling and finishing of wind turbine blades prior to the application of a top paint coat. They are available in co-axial cartridge packaging for use in a standard caulking gun making them easy to extrude, mix and apply.They provide good adhesion to both polyester and epoxy GRP and are also color coded material for product identifica-tion to insure the correct product is used for the specific temperature range.

Our most current General Sales Conditions shall apply.

Please consult the Data Sheet prior to any use and processing.

PROCESSING BENEFIT• Rapid excess stock removal• Fine dust – no balling• Clog free abrasive surface after sanding• Pore free

ENVIRONMENTAL CONDITIONS• Application from +5°C to +35°C• Moisture resistance up to 80% R.H

SANDING TIME• Fast sanding times even at low temperatures• Both products offer a similar sanding time but at

different temperatures

SIKA SERVICES AGTuffenwies 16CH-8048 ZurichSwitzerland

CONTACT:Phone: +41 58 436 40 40Fax: +41 58 436 45 30www.sika.com/wind

www.sika.com/wind

Sand

ing

tim

e [m

ins]

Average properties after post curing at 80°C

Ambient temperature [°C]

10

15

20

25

30

35

40

45

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00 5 10 15 20 25 30 35 40

SikaForce®-7800 BlueSikaForce®-7800 Red

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Product Data Sheet Version 1 (03 / 2016)

SikaForce®-7800 Blue

Fast curing profile and surface filler for blade repair applications

Typical Product Data

Properties Component A

SikaForce®-7800 Blue (A)

Component B SikaForce

®-7800 (B)

Chemical base Polyols Isocyanate derivatives

Color (CQP1 001-1)

Color mixed

Light blue Brown

Light blue

Curing mechanism Polyaddition

Density2 (CQP 006-5)

Density mixed (calculated)

1.38 g/cm³ 1.22 g/cm³

1.33 g/cm³

Mixing ratio by volume 100 : 50

Solids content 100%

Viscosity2 (CQP 029-1) 25 mm PP, d=1 mm, 10 s

-1 3’500 mPa·s 1’500 mPa·s

Consistency (mixed) Thixotropic paste

Application temperature 5 – 15 °C

Working time3 2 minutes

Sanding time at 5 °C 10 °C 15 °C

40 minutes 30 minutes 15 minutes

Elongation at break (CQP 545-2 / ISO 527-2) 2.5 %

Glass transition temperature (ISO 11357-2) 55 °C

Shelf life (CQP 016-1) (stored at 10 - 30 °C) 15 months 1) CQP: Corporate Quality Procedure

2) 23 °C / 50 % r.h.

3) 10 °C 50 % r.h.

Description

SikaForce®-7800 Blue is a two

component polyurethane based profile and surface filler designed for the use at temperatures below 15 °C. If ambient temperatures are higher than 15 °C it is advisable to use SikaForce

®-7800 Red.

Product Benefits

- Excellent mixing, application and tooling properties

- Very good adhesion to fiberglass surfaces

- Non-sag up to layer thicknesses of approx. 20 mm

- Fast sanding time at low ambient temperature

- Easy to sand, does not clog the sandpaper

Areas of Application

SikaForce®-7800 Blue is used for

profile shaping and surface filling of damaged rotor blades in the wind turbine industry. This product is suitable for profes-sional experienced users only. Tests with actual substrates and conditions have to be performed to ensure adhesion and material compatibility.

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Further information available at:

www.sika.com

Sika Limited

Industry / Sealing & Bonding

Watchmead

Welwyn Garden City

Hertfordshire

AL7 1BQ

Tel. +44 (0)1707 394444

Cure Mechanism

The curing of SikaForce®-7800

Blue takes place by chemical reac-tion of the two components. Higher temperatures speed up the curing process and lower temperatures slow down the curing process.

Environmental Resistance

In case of expected chemical or thermal exposure, we recommend a project related testing. Consult the Technical Department of Sika Industry for advice.

Method of Application

Surface preparation Usually it is necessary to prepare the substrates to ensure optimal adhesion. Based on the surface condition and type of material, physical or chemical pre-treatment may be required after the cleaning process. Advice on specific applications is available from the Technical De-partment of Sika Industry.

Cartridge application

For the cartridge application use a suitable manual or a compressed air piston-type cartridge gun. To ensure good mixing quality a static mixer of type Sulzer MixPac

®

Quadro MGQ 08-20T is to be used. Other static mixers may be suitable but have to be thoroughly tested beforehand.

Cleaning

Uncured SikaForce®-7800 Blue

may be removed from tools and equipment with SikaRemover

®-

208. Once cured, the material can only be removed mechanically. Hands and exposed skin should be washed immediately using Sika

®

Handclean towels or a suitable industrial hand cleaner and water. Do not use solvents on skin!

Storage Conditions

SikaForce®-7800 Blue has to be

kept between 10 °C and 30 °C in a dry place. Do not expose to direct sunlight or frost. After opening of the cartridge, the contents need to be protected against humidity.

Further Information

The following publications are available on request: - Safety Data Sheet

Packaging Information SikaForce®-7800 Blue

Cartridge (2C) 195 ml

Basis for Product Data

All technical data stated in this Product Data Sheet are based on laboratory tests. Actual measured data may vary due to circumstan-ces beyond our control.

Health and Safety Information

For information and advice re-garding transportation, handling, storage and disposal of chemical products, users shall refer to the actual Safety Data Sheets contain-ing physical, ecological, toxicologi-cal and other safety-related data.

Disclaimer The information, and, in particular, the recommendations relating to the appli-cation and end-use of Sika products, are given in good faith based on Sika's current knowledge and experience of the products when properly stored, handled and applied under normal conditions in accordance with Sika's recommendations. In practice, the differences in materials, substrates and actual site conditions are such that no warranty in respect of merchantability or of fitness for a particular purpose, nor any liability arising out of any legal relationship whatsoever, can be in-ferred either from this information, or from any written recommendations, or from any other advice offered. The user of the product must test the product’s suitability for the intended application and purpose. Sika reserves the right to change the properties of its products. The proprietary rights of third parties must be observed. All orders are ac-cepted subject to our current terms of sale and delivery. Users must always refer to the most recent issue of the local Product Data Sheet for the prod-uct concerned, copies of which will be supplied on request.

 

 Additional Product Information        SikaForce®‐7800 Red   Sika Services AG 26.08.2014, VERSION 1  Tueffenwies 16 API_SikaForce‐7800_Blue_Mixing_e.docx  CH‐8048 Zuerich 

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ADDITIONAL PRODUCT INFORMATION SikaForce®‐7800 Blue  

Mixing instruction for 2‐component coaxial cartridge 

  

 

METHOD 1: APPLICATION THROUGH STATIC MIXER  SikaForce®‐7800 Blue can be directly applied from coaxial cartridges through a static mixer (type Sulzer 

MixPac® Quadro MGQ 08‐20T) 

Due to the fast curing speed the mixer open time is limited to approx. 1 min at 23°C 

The tooling time at 23°C is approx. 2 min  

  

     

Equipment required  Unscrew and remove  plastic retaining nut 

Pull out blanking plug 

           

Squeeze out approx.  10‐20 mm of filler  

Carefully cut off the corner  of the packaging. 

Squeeze out contents into mixing cup and discard packaging. 

       

 

Start application,…  …use spatula to tool filler  and let material cure 

 

 

 Additional Product Information        SikaForce®‐7800 Blue  Sika Services AG 26.08.2013, VERSION 1  Tueffenwies 16 API_SikaForce‐7800_Blue_Mixing_e.docx  CH‐8048 Zuerich 

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METHOD 2: HAND MIXING BY SPATULA SikaForce®‐7800 Blue can be mixed by hand using a spatula 

Mixing by hand increases the risk of inhomogeneous mixture and may affect the material performance 

The tooling time at 23°C is approx. 3 minutes (includes time required for mixing) 

  

     

Equipment required  Unscrew and remove  plastic retaining nut 

Pull out blanking plug 

           

Squeeze out…  …the required amount  of filler 

Homogeneously mix both  components until streaks  fully disappear (approx. 30 s) 

   

   

Tool filler by spatula and  let material cure 

   

 

 FURTHER INFORMATION  Copies of the following publications are available on request:  

Product Data Sheet  Safety Data Sheet  Additional Product Information: SikaForce®‐7800 Blue ‐ Application and curing properties 

 

HEALTH AND SAFETY INFORMATION  For information and advice regarding transportation, handling, storage and disposal of chemical products, users shall refer to the actual Safety Data Sheets containing physical, ecological, toxicological and other safety‐related data 

 Additional Product Information        SikaForce®‐7800 Blue  Sika Services AG 26.08.2013, VERSION 1  Tueffenwies 16 API_SikaForce‐7800_Blue_Mixing_e.docx  CH‐8048 Zuerich 

 3/3 

LEGAL NOTE 

The information, and, in particular, the recommendations relating to the application and end‐use of Sika products, are given in good faith based on Sika's current knowledge and experience of the products when properly stored, 

handled and applied under normal conditions in accordance with Sika’s recommendations. In practice, the differences in materials, substrates and actual site conditions are such that no warranty in respect of merchantability or of fitness for a particular purpose, nor any liability arising out of any legal relationship 

whatsoever, can be inferred either from this information, or from any written recommendations, or from any other advice offered. The user of the product must test the products suitability for the intended application and purpose. Sika reserves the right to change the properties of its products. The proprietary rights of third parties 

must be observed. All orders are accepted subject to our current terms of sale and delivery. Users must always refer to the most recent issue of the local Product Data Sheet for the product concerned, copies of which will be supplied on request. 

           

      

      

      

      

Version given by 

Sika Services AG       

Phone: +41 58 436 4040 

Fax: +41 58 436 5407 

www.sika.com 

 

© 2013 Sika Services AG 

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 Additional Product Information        SikaForce®‐7800 Blue  Sika Services AG 26.08.2013, VERSION 1  Tueffenwies 16 API_SikaForce‐7800_Blue_Application_e.docx  CH‐8048 Zuerich 

 3/3 

 

 

 

HEALTH AND SAFETY INFORMATION  For information and advice regarding transportation, handling, storage and disposal of chemical products, users shall refer to the actual Safety Data Sheets containing physical, ecological, toxicological and other safety‐related data. 

   VALUE BASES  All technical data stated in this document are based on laboratory tests. Actual measuBlue data may vary due to 

circumstances beyond our control. 

LEGAL NOTE 

The information, and, in particular, the recommendations relating to the application and end‐use of Sika products, are given in good faith based on Sika's current knowledge and experience of the products when properly stoBlue, 

handled and applied under normal conditions in accordance with Sikas recommendations. In practice, the differences in materials, substrates and actual site conditions are such that no warranty in respect of merchantability or of fitness for a particular purpose, nor any liability arising out of any legal relationship 

whatsoever, can be inferBlue either from this information, or from any written recommendations, or from any other advice offeBlue. The user of the product must test the products suitability for the intended application and purpose. Sika reserves the right to change the properties of its products. The proprietary rights of third parties 

must be observed. All orders are accepted subject to our current terms of sale and delivery. Users must always refer to the most recent issue of the local Product Data Sheet for the product concerned, copies of which will be supplied on request. 

           

      

      

      

      

Version given by 

Sika Services AG       

Phone: +41 58 436 4040 

Fax: +41 58 436 5407 

www.sika.com 

 

© 2013 Sika Services AG