H.B. Fuller EV Bond 420

Identification

Chemical Family

Acrylics & Acrylates

GBU

EA

RTU Product Type

2K (2 component) Adhesive,

Reactive Adhesive,

Structural Adhesive

Categories

Markets → Automotive & Transportation → Applications → Automotive → Electrical & Electronic Systems

Markets → Electrical & Electronics → Applications → Parts & Components → Batteries

Technologies → Adhesives & Sealants → Product Families → Functional Adhesives → Structural Adhesives

Applications

Application Area

Battery Packs,

Batteries,

Electric Vehicle (EV)

Compatible Substrates & Surfaces

Metal,

Plastics,

Aluminum,

Composites,

Fiberglass,

Stainless Steel,

Polycarbonate (PC),

Acrylonitrile Butadiene Styrene (ABS),

Epoxies,

Acrylic,

Polyurethane,

Coated Surfaces,

Phenolics,

RIM Urethane,

Gelcoat

Applications & Uses

Application Details

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 ensure 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.

Clean Up

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.

Recommended For

Metals

• Aluminum
• Steel
• Stainless
• E-Coated Metal

Thermosets

• Fiberglass
• Phenolic
• Gel Coat
• Epoxy
• RIM Urethane
• Polyurethane
• Liquid Molding Resin

Thermoplastics

• Acrylic
• ABS
• Polycarbonate

Features

Ready-to-Use Product Features

Chemical Resistant,

Excellent Performance,

Flame Retardant,

Good Adhesion,

Good Bonding Strength,

Good Weather Stability,

High Durability,

High Impact Resistance,

Low Odor,

High Reliability,

Room Temperature Curing

Features & Benefits

Labeling Claims

Non-Flammable,

Environmentally Friendly

Typical Features & Benefits

• No Surface Preparation Required
• Excellent Strength to Metals, E-Coat, Thermoplastics, Thermosets, and Engineering Plastics
• UL94 V0 Flame Retardancy
• Suitable for Easy Manual and Pneumatic Dispensing
• Room Temperature Cure
• 10:1 meter-mix product for ease of application
• Use on as received metal surfaces including aluminum, stainless and plated steels and forms tough, high strength bonds without surface preparation

Packaging & Availability

Packaging Type

Drums,

Pails

Regional Availability

• Asia Pacific
• Europe
• North America
• Latin America
• India/MiddleEast/Africa (IMEA)

Typical Packaging

EV Bond 420 is conveniently packaged in 50 ml, 490 ml, pail, and drum kits.

Physical Properties

Physical Form

Liquid

Properties

Density:

1670 kg/m³

Dielectric Strength:

17.6~19.4 kV/mm

Flash Point:

93.34 °C

Shear Strength:

20 MPa

Specific Gravity:

1.67

Cured Properties

	Value	Units	Test Method / Conditions
Dielectric Strength	17.6 - 19.4	kV/mm	-
Elongation at Break	min. 3	%	-
Hardness	70	Shore D	ASTM D2240
Over Lap Shear Strength (at 25°C, 50% RH, aluminum)	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 Service Range	-67 to 212	°F	-

Typical Properties

	Value	Units	Test Method / Conditions
Diameter	0.25	mm	-
Storage Temperature	55 - 75	°F	-

Physical Properties

	Value	Units	Test Method / Conditions
Mix Ratio (by volume)	10:1	-	-
Mix Ratio (by weight)	14:1	-	-
Mixed Density (mixed)	1.67	g/cc	-

Rheological Properties

	Value	Units	Test Method / Conditions
Viscosity (at 25°C, spindle 7, 20rpm, activator)	40,000 - 80,000	cPs	Brookfield RV7
Viscosity (at 25°C, spindle 7, 20rpm, resin)	100,000 - 200,000	cPs	Brookfield

Uncured Properties

	Value	Units	Test Method / Conditions
Cure Time	24	hours	-
Fixture Time	15 - 20	minutes	-
Flash Point	min. 200	°F	-
Open Time	6 - 9	minutes	-

Regulatory & Compliance

Certifications & Compliance

UL 94

Storage & Handling

Storage and Shelf Life

• Product should be stored in a cool dry place out of direct sunlight. The shelf life of EV Bond 420 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.

Shelf Life

9 months

Thermal Properties

Flame Rating

UL 94 V0