H.B. Fuller EV Bond 343

Identification

Chemical Family

Polyurethanes (PU)

GBU

EA

RTU Product Type

2K (2 component) 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

Ceramic,

Metal,

Plastics,

Elastomers & Rubbers,

Polycarbonate (PC),

Acrylonitrile Butadiene Styrene (ABS),

Nylon,

Natural Rubber

Applications & Uses

Mixing and Cure Schedule

To obtain the best cured properties, accurate proportioning and thorough mixing are essential. The production of the desired polyurethane requires accurate measurement of the two components and adequate mixing.

Ratio	Part A	Part B
By weight	100	125
By volume	100	100

The cure schedule is dependent upon the temperature. The recommended cure schedule will vary with the desired properties. The recommended schedule to achieve the typical properties is shown below: 18 hours at 25°C (77°F) -or- 2 hours at 80°C (176°F).

Features

Ready-to-Use Product Features

Easier Processing,

Excellent Substrate Adhesion,

Good Bonding Strength,

Good Processability,

Good Sagging Resistance,

Highly Flexible,

Improved Adhesion,

Medium Hardness,

Resilient,

High Reliability,

Semi-flexible,

Ease Of Use,

Non-Sagging

Features & Benefits

Product Highlights

• EV Bond 343 is suitable for bonding metals, ceramics, natural rubber, thermosetting polymers and select types of unprepared thermoplastic substrates such as ABS, Polycarbonate and Nylon.
• It is recommended that this product be tested before use on any polymer not specifically noted above. Other types of Thermoplastic substrates may be suitably bonded with EV Bond 343 after physical or chemical pretreatment.

Packaging & Availability

Packaging Type

Cartridges,

Drums,

Pails

Regional Availability

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

Typical Packaging

• 200 mL Cartridge
• 5 gal Pails
• 55 gal Drums          

Physical Properties

Physical Form

Paste

Properties

Density:

1450 kg/m³

Shear Strength:

20.67 MPa

Shelf Life:

6 months

Specific Gravity:

1.45

Viscosity:

83000 cps

Component A

	Value	Units	Test Method / Conditions
Density	9.79	lbs/gal	-
Specific Gravity (at 25°C)	1.17	-	-
Viscosity (at 25°C)	16000	cPs	-

Component B

	Value	Units	Test Method / Conditions
Density	12.11	lbs/gal	-
Specific Gravity (at 25°C)	1.45	-	-
Viscosity (at 25°C)	83000	cPs	-

Typical Cured Properties

	Value	Units	Test Method / Conditions
Cast Tensile Elongation (7 day cure, cast)	avg. 160	%	-
Cast Tensile Strength (7 day cure, cast)	avg. 3709	psi	-
Hardness	65	Shore D	Shore D
Lap Shear Strength (aluminum, solvent degreased, 7 day cure)	avg. 2200	psi	-
Lap Shear Strength (cold-rolled steel, solvent degreased, 7 day cure)	avg. 3000	psi	-
Lap Shear Strength (galvanized steel, solvent degreased, 7 day cure)	avg. 1900	psi	-
Lap Shear Strength (polycarbonate, 7 day cure, substrate failure)	min. 2000	psi	-
Mixing and Curing Schedule (by volume)	100:100	-	-
Mixing and Curing Schedule (by volume, part B)	100	-	-
Mixing and Curing Schedule (by weight)	100:125	-	-
Mixing and Curing Schedule (by weight, part B)	125	-	-

Uncured Properties

	Value	Units	Test Method / Conditions
Gel Time (10g, blend)	3 - 5	minutes	-
Tack-Free Time (blend, 40 mil film)	15	minutes	-

Typical Properties

	Value	Units	Test Method / Conditions
Storage Temperature	16 - 27	°C	-

Safety & Health

Safety Information

• These materials are intended for industrial use only, and the practices of good housekeeping, safety and cleanliness should be followed before, during and after use. Although the system contains low volatility materials, care should be taken in handling. Use adequate ventilation in the work area.
• These materials may cause dermatitis in susceptible individuals. Keep off skin and out of eyes. In case of accidental skin contact, wash thoroughly with soap and water. In case of eye contact, flush eyes thoroughly with water and consult a physician immediately.

Storage & Handling

Storage and Shelf Life

These materials should be stored in a dry environment within a temperature range of 16°C to 27°C (60°F to 80°F). Extremes of temperature beyond this range may result in crystallization or polymerization of the materials. Introduction of a nitrogen blanket into the containers before closing will improve the storage life of the products.

Shelf Life

6 months (in separate sealed containers months)