H.B. Fuller

Identification

Carrier: Resin-based,

Acrylics
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: Batteries,

Electric Vehicle (EV)
Application Method: Pneumatic Gun,

Dispensing Equipment
Compatible Substrates & Surfaces: Metal,

Aluminum,

Fiberglass,

Stainless Steel,

Polycarbonate (PC),

Acrylonitrile Butadiene Styrene (ABS),

Vinyl,

Epoxies,

Nylon,

Polyamide,

Acrylic,

Polyvinyl Chloride (PVC),

Polyurethane,

Polyethylene Terephthalate (PET),

Polystyrene (PS),

Polybutylene Terephthalate (PBT),

Phenolics,

RIM Urethane,

Gelcoat,

Plated Steel,

Poly(p-Phenylene Oxide) (PPO),

Polyether Ether Ketone (PEEK),

Thermoplastics,

Thermosetting Plastics,

Engineering Plastics,

E-Coated Surfaces

Applications & Uses

General Instructions

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

Thermosets:

Fiberglass
Phenolic
Gel Coat
Epoxy
RIM Urethane
Polyurethane
Liquid Molding Resin

Thermoplastics:

Acrylic
ABS
Polycarbonate
Nylon/PA*
PPO*
Vinyl*
PVC
Styrene
Peek
PBT Blends*
PET Blends

*Surface treatment may be needed.

Features

Ready-to-Use Product Features: Excellent Performance,

Excellent Strength,

Excellent Toughness,

Flame Retardant,

Good Adhesion,

Good Bonding Strength,

Good Thermal Conductivity,

High Impact Resistance,

High Viscosity,

Wide Temperature Operating Range,

Ease Of Use,

Room Temperature Curing,

Excellent Multi-Substrate Adhesion

Features & Benefits

Key Attributes

Thermally Conductive
No Surface Preparation Required
Excellent Adhesion Properties
Excellent Strength to Metals, E-Coat, Thermoplastics, Thermosets, and Engineering Plastics
High Impact Resistance
Suitable for Easy Manual and Pneumatic Dispensing
UL94 V0 Flame Retardancy
100% Reactive
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

Europe

Typical Packaging Information

EV Therm 441 is conveniently packaged in 50 ml, 490 ml, pail, and drum kits. Special packaging is available upon request.

Typical Packaging Information

EV Therm 441 is conveniently packaged in 50 ml, 490 ml, pail, and drum kits.
Special packaging is available upon request.

Physical Properties

Color (Properties): Blue
Physical Form: Liquid
Appearance: Blue viscous liquid

Properties

Pot Life:

0.30006~0.38341 hours

Shelf Life:

9.0 months

Strain at Break:

46.0 %

Viscosity:

100000.0~200000.0 cps

Cured Properties


	Value	Units	Test Method / Conditions
Dielectric Strength	20.1 - 21.9	kV/mm	-
Hardness	65	Shore D	ASTM D2240
Thermal Conductivity	1	W/mK	-
Thermal Service Range	-67 to 212	°F	-

Technical Data


	Value	Units	Test Method / Conditions
Mixed Density (mixed)	1.55	g/cc	-

Recommended Mixing and Handling Parameters


	Value	Units	Test Method / Conditions
Mix Ratio (by volume)	10:1	-	-
Mix Ratio (by weight)	14:1	-	-

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 RV7

Cured Mechanical Properties


	Value	Units	Test Method / Conditions
Elongation at Break	5 - 7	%	-
Over Lap Shear Strength (at 25°C, 50% RH, aluminum 6061)	13.8	MPa	ASTM D1002
Over Lap Shear Strength (at 25°C, 50% RH, carbon steel)	12.4	MPa	ASTM D1002
Over Lap Shear Strength (at 25°C, 50% RH, nickel coated low - carbon steel plated)	17.2	MPa	ASTM D1002
Over Lap Shear Strength (at 25°C, aluminum 2024, 50% RH)	13.1	MPa	ASTM D1002

Uncured Properties


	Value	Units	Test Method / Conditions
Cure Time	24	hours	-
Fixture Time	30 - 50	minutes	-
Flash Point	min. 200	°F	-
Open Time	18 - 23	minutes	-

Typical Properties


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

Appearance

Blue viscous liquid

Regulatory & Compliance

Certifications & Compliance: UL 94

Storage & Handling

Handling and Clean-Up Information

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.

Storage Conditions

Product should be stored in a cool dry place out of direct sunlight.
The shelf life of EV Therm 441 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

H.B. Fuller EV Therm 441

Enhanced TDS