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SikaPower®-830

High performance toughened adhesive for wind turbine blade bonding

SikaPower®-830 is a tough, high strength, solvent-free, thixotropic epoxy adhesive. It is designed for bonding of wind turbine blades.  

  • High resistance to fatigue and against crack initiation and propagation
  • Low density
  • Long open time at high temperatures and humidity
  • Fast curing at moderate temperatures
  • Low exothermic peak temperature
  • Very good non-sag properties
  • DNV-CP-0086 approved
 
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PRODUCT BENEFITS

  • High resistance to fatigue and against crack initiation and propagation
  • Low density
  • Long open time at high temperatures and humidity
  • Fast curing at moderate temperatures
  • Low exothermic peak temperature
  • Very good non-sag properties
  • DNV-CP-0086 approved
 

Areas of Application

SikaPower®-830 is designed for bonding highly stressed components in the manufacturing process of wind turbine blades (shells, shear webs, etc.). This product is suitable for experienced professional users only. Tests with actual substrates and conditions have to be performed ensuring adhesion and material compatibility.  

Packaging

 

SikaPower®-830 (A)

Drum

220 kg

SikaPower®-051

Drum

220 kg
 

Product Details

Typical Product Data
Properties

SikaPower®-830 (A)

SikaPower®-051

Chemical base

Epoxy

Amine

Color (CQP001-1)

 

mixed

Yellow

Blue

Green

Density

 

mixed

1.15 g/cm3

1.15 g/cm3

1.15 g/cm3

Mixing ratio

A:B by weight

100 : 47

Viscosity (CQP029-4)

at 10 s-1

120 Pa·s A

40 Pa·s A

Consistency

Thixotropic paste

Application temperature

15 ─ 30 °C

Open time (CQP046-11 / ISO 4587)

120 min B, C

Curing time (CQP046-9 / ISO4587)

at 70 °C

4 hours

Tensile strength (CQP543-1 / ISO 527)

45 MPa D, E

E-Modulus (CQP543-1 / ISO 527)

3000 MPa D, E

Elongation at break (CQP543-1 / ISO 527)

3 % D, E

Tensile lap-shear strength (CQP046-9 / ISO 4587)

20 MPa C, D

Glass transition temperature (CQP509-1 / ISO 6721)

90 °C

Shelf life

12 months

CQP = Corporate Quality Procedure

A) tested at 20 °C

B) 28 °C / 70 % r.h.

C) adhesive layer: 25 x 12.5 x 3 mm / on GFRPD) 23 °C / 50 % r.h.E) tested at 2 mm / min
Technical Information

CURE MECHANISM

SikaPower®-830 cures by chemical reaction of the two components. Higher temperatures speed up the curing process and lower slow it down. The final glass transition temperature, as well as the tensile and shear strengths, may be increased with higher curing temperature.

CHEMICAL RESISTANCE

In view of potential chemical or thermal exposure, it is required to conduct a project related testing.

Application

Application Information

Surface preparation

SikaPower®-830 adheres usually well to epoxy composites if applied subsequently after the removal of the protective peel ply.

Surfaces must be clean, dry and free from grease, oil and dust. Surface treatment may be required depending on the specific nature of the substrates. All pre-treatment steps must be confirmed by preliminary tests on original substrates considering specific conditions in the assembly process.

Application

SikaPower®-830 is applied out of drums with automatic application equipment.

For advice on selecting and setting up a suitable pump system, contact the System Engineering Department of Sika Industry.

 

Removal

Uncured SikaPower®-830 may be removed from tools and equipment with Sika® Remover-208 or another suitable solvent. 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 cleaning towels or a suitable industrial hand cleaner and water.

Do not use solvent on skin.

STORAGE CONDITIONS

SikaPower®-830 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 packaging, the contents have to be protected against humidity.

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