Brands Technical Data Sheets Shelf Life Starting Formulations Find a Distributor

Epoxy Resins and Systems for Wind Energy Composites

For rotor blade components, proven performance is essential. Since 1978, when the first fiber-reinforced rotor blades were being developed, Westlake Epoxy has been working closely with blade manufacturers, OEMs, designers and academia to achieve innovative engineering solutions backed by global, industry-leading technical support and infrastructure. We are a one-stop shop for leading expert assistance and resin systems for all types of blade applications, including infusion, hand lamination, bonding paste, and tooling.

Wind Composites—HAND LAY-UP

Epoxy Resin System	Performance & Features						Remarks
Epoxy Resin System	Mix Ratio (weight)	Pot Life Range (min¹)	Crystallization Stability	Track Record	Process Robustness	Ambient Cure	Remarks
Hand Lay-up
EPIKOTE™ Resin MGS™ LR 135 EPIKURE™ Curing Agents MGS LH 133 - 138	100:35	15-360					Today's Industry benchmark Proven performance over 25 years in the field
EPIKOTE Resin MGS LR 235 EPIKURE Curing Agents MGS LH 233 - 239	100:35	10-600					Reduced bleed out Reduced exothermicity Improved laminate quality Bio-based components
EPIKOTE Resin MGS LR 035 EPIKURE Curing Agents MGS LH 034-037	100:30	15-300					New value-engineered hand lay-up system Improved cold cure Ideal for overlaminates and repairs

1) Pot life of 100g in a waterbath at 30°C

Good

Better

Best

For more information, speak with a Westlake Epoxy representative.

Wind Composites—BINDERS, REPAIR & TOOLING

Epoxy Resin Product	Applications	Remarks
Binders, Repair, Tooling and Other Products
EPIKOTE Resin MGS PR685	Binder	Novel epoxy-based binder concept utilizing hot-melt spray/swirl application
EPIKOTE Resin 05390	Binder	Proven preform binder concept based on advanced epoxy resin technology
EPIKOTE Resin MGS BP 20	Adhesive	Cartridge system for field and site repair Ambient cure Good adhesion on unprepped surfaces Composite-to-metal bonding
EPIKOTE Resin TR 200	Tooling Gelcoats	Repair-friendly tooling gelcoat
EPIKOTE Resin TR 300	Tooling Gelcoats	Hard-surface, high-Tg gelcoats for durable molds
EPIKOTE Resin TR 900	Tooling Gelcoats	Coupling layer for EPIKOTE Resin TR 300
EPIKOTE Resin MGS RIM 935	Tooling Resin	Benchmark for tooling in the wind energy industry High-Tg, low viscosity tooling system Infusion-capable
EPIKOTE Resin 04434	Tooling Resin	High-Tg tooling system for up to 180°C

For more information, speak with a Westlake Epoxy representative.

Wind Composites—INFUSION

Epoxy Resin System	Performance & Features								Remarks
Epoxy Resin System	Mix Ratio (vol.)	Pot Life Range (min²)	Mixed Viscosity (at 25°C)	Infusion Perfor- mance	Exother- micity	Tg Develop- ment	Track Record/ Laminate Database	Crystalli- zation Stability	Remarks
Resin Infusion
EPIKOTE™ Resin MGS™ RIMR 135 EPIKURE™ Curing Agents MGS RIMH 134 - 137	100:36	45-240	240-270						Today's Industry benchmark Proven performance over 20 years in the field Ideal infusion repair system with RIMH 134
EPIKOTE Resin MGS RIMR 035c EPIKURE Curing Agents MGS RIMH 036 - 038	100:34	110-330	250-280						Today's most commonly used system High degree of hydrophobicity
EPIKOTE Resin MGS RIMR 036 EPIKURE Curing Agent MGS RIMH 039	100:41	300-380	240						Most robust infusion window Low exotherm
EPIKOTE Resin MGS RIMR 1036 EPIKURE Curing Agent MGS RIMH 1039	100:25	380	270						Long pot life Fast cure High integrated flow

1) With RIMH 038
2) Pot life of 100g in a waterbath at 30°C

Good

Better

Best

For more information, speak with a Westlake Epoxy representative.

Wind Composites—BONDING PASTE

Epoxy Resin System	Performance & Features							Remarks
Epoxy Resin System	Mix Ratio (vol)	Pot Life Range (min¹)	Gap Filling (mm)	Open Time	Crack Resistance	Fatigue Performance	Ease of Use	Remarks
Bonding Paste
EPIKOTE™ Resin MGS™ BPR 135 G3 Resin EPIKURE™ MGS™ BPH 134-137 GF Curing Agent	100:50	15-180	>10					Today's industry benchmark Proven performance over 20 years in the field Wide range of curing agents available Low exothermicity
EPIKOTE Resin MGS BPR 535/EPIKURE Curing Agent MGS BPH 538	100:43	260	>10					Next generation High fracture toughness and strain Low density Best-in-class open time
EPIKOTE Resin MGS BPR20/EPIKURE Curing Agent BPH20	100:50	15	<10					Cartridge system for field and site repair Ambient cure Good adhesion on unprepared surfaces Composite-to-metal bonding

Epoxy Resins and Systems for Wind Energy Composites

1) Pot life of 100g in a waterbath at 30°C

Good

Better

Best

1) With RIMH 0382) Pot life of 100g in a waterbath at 30°C

Good

Better

Best

1) Pot life of 100g in a waterbath at 30°C

Good

Better

Best

1) With RIMH 038
2) Pot life of 100g in a waterbath at 30°C