H.B. Fuller EV Protect 4006 SFR

Identification

Chemical Family

Polyurethanes (PU)

Foam Type

2K System

GBU

EA

Categories

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

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

Technologies → Ready-to-Use Products → Product Families → Foams

Application Information

Product End Uses

Battery Module Encapsulation,

Battery Cell Potting

Applications

Application Area

Batteries,

Electric Vehicle (EV)

Applications & Uses

Hand Mixing Instructions for Foams

• Per the stated mix ratio, measure out (either by weight or volume) the appropriate portions of Part A and Part B as into a flat sided container.
• The mixing container should be larger than the amount of total material being mixed to allow for vigorous mixing. For example, for 75 grams of total material we suggest a minimum size of 150 ml container for mixing. For larger amounts, adjust container size appropriately.
• Generally it’s recommended to add the higher density part into the flat sided mixing container first and then add the other part gently on top of the first part.
• This helps limit pre-reaction of the materials to just the interphase. Scrape the side and bottom of the individual parts container’s to ensure nearly all the measured materials are added to the mixing container.
• Start timer and immediately mix vigorously for 20-30 seconds with a spatula or flat sided stir stick. Thoroughly scraping the sides and bottom of cup while mixing. Mixed material should be homogeneous and uniform in appearance.
• At end of mixing time, immediately pour mixed material into mold.
• Immediately clean all tools used in preparations that you wish to reuse with solvent.

Features

Equipment Features

Cost Effective

Ready-to-Use Product Features

Flame Retardant,

Good Processability,

High Impact Resistance,

Low Viscosity,

Vibration Resistance,

Self-Leveling,

Non-Outgassing,

High Insulation Properties,

Room Temperature Curing

Features & Benefits

Product Highlights

• EV Protect 4006 SFR is generally dispensed using a high speed dynamic mixer head directly into the battery module.
• The low viscosity liquid is easily able to flow and self level at the bottom of the enclosure.
• Once leveled, the material will foam and rise to approximately 5 times volumetric expansion.
• After rising, the foam will crosslink and cure creating a semi-structural interconnected foam that encapsulates all components within the module.
• In the event of a thermal event, the foam will absorb, isolate, and insulate the cells to mitigate thermal propagation.
• EV Protect 4006-A SFR / 4006-B SFR is a two-component material. Hand mixing may be difficult.
• It is recommended that an automated dispensing unit be used with dynamic mixer to mix material.
• Prior to use, stir the individual parts to ensure they are uniform and homogeneous.
• Mixing the 4006-A-SFR prior to use for 5 minutes is essential to achieve a consistent foam density and cell structure.
• Check the container bottom for sediment after mixing to ensure filler is mixed in.
• If an extended shutdown or break in produc tion has occurred (> 1 hour) re-mix part A side prior to use.
• Note: Pail or Drum size containers may require longer mixing times. Surface must be clean, dry, and free from grease, oil, wax and other surface contaminates.

Product Highlights

Technology/Base	Polyurethane Foam
Type of Product	Encapsulant
Components	Two Component
Curing	Room Temperature Cure

Product Highlights

• Reduces thermal propagation
• Ultra lightweight
• Low viscosity & self leveling
• Great vibration and impact resistance
• Outstanding insulation properties
• No outgassing of hydrogen gas during curing
• Meets UL94 V0 certification
• Up to 5 times expansion rate
• Cost effective - low volume usage
• Fast processability

Packaging & Availability

Packaging Type

Drums,

Pails,

Totes (IBC)

Regional Availability

• North America

Packaging Information

• 5 gal Pails
• 55 gal Drums
• 300 gal Totes

Physical Properties

Physical Form

Liquid

Appearance

Light amber low viscosity liquid

Properties

Cured Properties

	Value	Units	Test Method / Conditions
Foam Density (free rise)	0.16 - 0.19	g/cm³	-
Foam Density (free rise)	10 - 12	pcf	-
Hardness (for 24 hours)	20 - 30	Shore A	-
Hardness (for 48 hours)	35 - 45	Shore A	-
Operating Temperature Range	- 60 to 120	°C	-
Thermal Conductivity	0.05	W/mK	-

Electrical Properties

	Value	Units	Test Method / Conditions
Dielectric Constant (at 1 MHz)	1.4	-	ASTM D-0150
Dielectric Strength	3	kV/mm	ASTM D149
Dissipation Factor (at 1 MHz)	0.029	-	ASTM D-0150
Surface Resistivity	7700000000000	ohm	ASTM D-0257
Volume Resistivity	510000000000	ohm - cm	ASTM D-0257

Uncured Properties

	Value	Units	Test Method / Conditions
Cream Time (at 25°C, blend)	180 - 240	seconds	-
Density (ASFR)	1.17	g/cm³	D792/D1475
Density (BSFR)	1.25	g/cm³	D792/D1475
Mix Ratio (BSFR, by volume)	81	-	-
Mix Ratio (by volume)	100:81	-	-
Mix Ratio By Weight (BSFR, by weight)	86	-	-
Mix Ratio By Weight (by weight)	100:86	-	-
Tack Free Time (at 25°C, blend)	approx. 60	minutes	-
Viscosity (at 25°C, ASFR)	500	cPs	-
Viscosity (at 25°C, BSFR)	160	cPs	-
Working Time (at 25°C, blend)	120	Seconds	-

Typical Properties

	Value	Units	Test Method / Conditions
Storage Temperature	min. 15	°C	-

Appearance

Light amber low viscosity liquid

Storage & Handling

Storage and Handling Conditions

• EV Protect 4006 SFR should be stored in a cool, dry place above 15°C (60°F).
• Purge open containers with dry nitrogen.
• Shelf life is a minimum of one year in unopened containers when stored at 25°C.
• For cleanup of EV Protect 4006 SFR, Methyl Ethyl Ketone, Acetone, Dibasic Ester, Ethyl Acetate, or Mineral Spirits are recommended.
• Mineral oil can be used to flush uncured materials from lines.
• To clean uncured material from tabletops, tools or spatulas, additional cleaning solvent options are Isopropanol and Denatured Alcohol.

Shelf Life

min.1 year