H.B. Fuller EV Therm 440
1 of 79 products in this brandH.B. Fuller EV Therm 440 is a modified, highly engineered structural acrylic adhesive designed to provide excellent thermal conductivity while maintaining superior strength and performance properties across a wide range of temperatures and substrates. EV Therm 440 is an excellent flame retardant with a UL94 V0 rating. EV Therm 440GB allows control of the adhesive gap to a diameter of 0.25mm (0.01").
RTU Product Type: 2K (2 component) Adhesive, Reactive Adhesive, Structural Adhesive
Application Area: Electric Vehicle (EV)
Compatible Substrates & Surfaces: Acrylic, Acrylonitrile Butadiene Styrene (ABS), Aluminum, Coated Surfaces, Epoxies, Fiberglass, Metal, Phenolics, Polycarbonate (PC), Polyurethane, RIM Urethane, Stainless Steel
Chemical Family: Acrylics & Acrylates
Features: Excellent Strength, Excellent Substrate Adhesion, Excellent Toughness, Flame Retardant, Good Adhesion, Good Thermal Conductivity, High Impact Resistance
Enhanced TDS
Identification
- Chemical Family
- GBU
- RTU Product Type
- Categories
Application Information
- Cure Method
Applications
- Application Area
- Compatible Substrates & Surfaces
Applications & Uses
- Application Method
-
- The product is best used at temperatures between 65°F and 80°F. Temperatures below 65°F will slow the cure speed of the material and viscosities will be higher.
- Temperatures above 80°F will cause the material to cure faster and viscosities will be lower. For consistent dispensing maintain temperature in the above mentioned range.
- For optimum bond strength and to insure maximum performance in the finished assembly mate parts together within the specified work time of the adhesive. Make sure the bond joint has uniform coverage and that a sufficient amount of adhesive is in the bond area.
- It is important to have the adhesive applied, parts aligned and positioned, within the established work times for the product. To ensure maximum performance in the finished assembly parts should remain undisturbed until the fixture time is reached.
- Suitable Substrates
-
Metals
- Aluminum
- Steel
- Stainless
- E-Coated Metal
Thermoplastics- Acrylic
- ABS
- Polycarbonate
Thermosets- Fiberglass
- Phenolic
- Gel Coat
- Epoxy
- RIM Urethane
- Polyurethane
- Liquid Molding Resin
Features
- Ready-to-Use Product Features
Features & Benefits
- Key Attributes
-
- No Surface Preparation Required
- Excellent Strength to Metals, E-Coat, Thermoplastics, Thermosets, and Engineering Plastics
- Suitable for Easy Manual and Pneumatic Dispensing
- 100% Reactive
- Room Temperature Cure
- 10:1 meter-mix product for ease of application
- Use on aluminum, stainless and plated steels forms tough, high strength bonds without surface preparation
Identification & Functionality
- Product Information
-
Technology/Base Modified Acrylic Type of Product Structural Adhesive Components Two Component Curing Room Temperature Cure Consistency Viscous Liquid
Packaging & Availability
- Packaging Type
- Regional Availability
- Typical Packaging
-
EV Therm 440 is conveniently packaged in 50 ml, 490 ml, pail, and drum kits. Special packaging is available upon request.
Properties
- Density:
-
1670 kg/m³
- Dielectric Strength:
-
22.1~23.9 kV/mm
- Flash Point:
-
93.34 °C
- Shear Strength:
-
20 MPa
- Specific Gravity:
-
1.67
- Cured Properties
-
Value Units Test Method / Conditions Dielectric Strength 22.1 - 23.9 kV/mm - Elongation at Break min. 4 % - Hardness 70 Shore D ASTM D2240 Over Lap Shear Strength (at 25°C, 50% RH, aluminum cured) 15 MPa ASTM D1002 Over Lap Shear Strength (at 25°C, 50% RH, carbon steel) 15 MPa ASTM D1002 Over Lap Shear Strength (at 25°C, 50% RH, nickel coated low - carbon steel plated) 20 MPa ASTM D1002 Thermal Conductivity min. 1.0 W/mK - Thermal Service Range -67 to 212 °F - - Typical Properties
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Value Units Test Method / Conditions Mix Ratio (by volume) 10:1 - - Mix Ratio (by weight) 14:1 - - Mixed Density (mixed) 1.67 g/cc - Storage Temperature 55 - 75 °F - - Rheological Properties
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Value Units Test Method / Conditions Viscosity (at 25°C, spindle 7, 20rpm, activator) 40,000 - 80,000 cPs Brookfield Viscosity (at 25°C, spindle 7, 20rpm, resin) 100,000 - 200,000 cPs Brookfield - Uncured Properties
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Value Units Test Method / Conditions Cure Time 24 hours - Fixture Time 40 - 50 minutes - Flash Point min. 200 °F - Open Time 18 - 23 minutes -
Storage & Handling
- Storage & Handling Information
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- Product should be stored in a cool dry place out of direct sunlight. The shelf life of EV Therm 440 is 9 months from date of manufacture. Shelf life is based on the products being stored properly at temperatures between 55°F and 75°F. Exposure to temperatures above 75°F will reduce the shelf life. This product should never be frozen.
- Clean up is best before the adhesive has cured. Cleaners containing NMP (N-methyl pyrolidone) or Citrus terpene provide the best results. On cured adhesive repeat use may be required.