H.B. Fuller

Enhanced TDS

Identification

Chemical Family: Silicones
GBU: EA
RTU Product Type: Potting Compound,

Encapsulant,

2K (2 component) Adhesive

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Application Information

Cure Method: Air Dry

Applications

Application Area: Turbines,

Edge Gluing,

PV Modules,

PV J-Box Potting,

Frame Sealing,

Blades,

Ingot Bonding,

Lithium-Ion Battery,

Energy Storage,

Module Installation,

Rail Bonding

Applications & Uses

Application Instructions

Part A should be blended thoroughly before mix with Part B in order to make filling material distribute evenly.
Mix evenly according to the ratio.
Pot the mixed material.
Recommended using automatic dispensing equipment to applying the potting compound.

Recommended cure: 21- 25°C, 45 - 55%RH for 7 days

Features

Ready-to-Use Product Features: Excellent Dielectric Properties,

Flame Retardant,

Good Thermal Conductivity,

Good Weather Fastness,

Fast Cure

Packaging & Availability

Country Availability

China (Mainland)

Regional Availability

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

Physical Properties

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

Properties

Flash Point:

93 °C

Strain at Break:

110 %

Tensile Strength:

1.2 MPa

Viscosity:

2500~3500 cps

Technical Data


	Value	Units	Test Method / Conditions
Density (mixed)	1.4	g/cm³	GB/T 13354
Mix Ratio (by volume)	4:1	-	-
Mix Ratio (by weight)	6:1	-	-
Nominal Service Temperature	- 50 to 150	°C	-
Thermal Conductivity	0.3	W/mK	DIN EN 821

Damp Heat Aging Test Properties


	Value	Units	Test Method / Conditions
Volume Resistivity (at 85°C, 85% RH, 1000h)	1.0 x 10¹⁵	Ω-cm	GB/T 1692

Electrical Properties


	Value	Units	Test Method / Conditions
Dielectric Strength	23	kV/mm	GB/T 1695
Volume Resistivity	1.0 x 10¹⁵	Ω-cm	GB/T 1692

Cured Properties


	Value	Units	Test Method / Conditions
Elongation at Break	110	%	GB/T 528
Flash Point	min. 93	°C	GB/T 5208
Gel Time (glue does not flow)	60	minutes	-
Hardness	40	Shore A	GB/T 531
Tensile Strength	1.2	MPa	GB/T 528
Work Life (viscosity higher than 30000 mPa·s)	8	m	-

Rheological Properties


	Value	Units	Test Method / Conditions
Viscosity (activator)	25	mPa.s	GB/T 2794
Viscosity (mixed)	3000	mPa.s	GB/T 2794
Viscosity (resin)	13000	mPa.s	GB/T 2794

Typical Properties


	Value	Units	Test Method / Conditions
Curing Temperature (at 45 - 55% RH, 7 days)	21 - 25	°C	-

Appearance

Black viscous liquid

Storage & Handling

Storage Condition: Product shall be ideally stored in a cool, dry area in unopened containers at room temperature. Keep away from children.
Shelf Life: 6 months

Tonsan® 1521 Black