Huntsman - ARALDITE MY 740 / ARADUR HY 918 / ACCELERATOR DY 062

Enhanced TDS

Identification & Functionality

Chemical Family: Epoxy & Epoxy Derivatives
RTU Product Type: Impregnating Resin System
Technologies: Composite Materials
Product Families: Composite Materials — Resin Systems
Impregnating Resin

Features & Benefits

Ready-to-Use Product Features: Excellent Dielectric Properties,
Good Mechanical Properties,
High Glass Transition Temperature,
Improved Ageing Resistance,
Low Exotherm

Applications & Uses

Application Area

Composites Processing Methods

Filament Winding,

Impregnation,

Pultrusion,

Trickle Impregnation,

Wet Lamination

Markets

Electrical & Electronics,

Industrial

Applications

Electrical & Electronics — Wire & Cable

Jacketing & Insulation

Industrial — Chemical & Industrial Manufacturing

Equipment & Parts

Application Information

Manufacture of electrical laminates (tubes, rods, etc.)
Impregnation of high voltage bushings, coils etc.

Technical Details & Test Data

Product Properties

Good mechanical and dielectric properties at elevated temperature
Good aging resistance
Low exothermic reaction for 0.2 pbw DY 062

Mechanical, Physical and Electrical Properties

Cure	Test Method	Condition	Unit	2h 80°C+	2h 80°C +	2h 80°C +
24h 120°C	2h 120°C	2h 120°C
Glass Transition Temperature	ISO 11357-2		°C	120 - 130	120 - 130	125 - 135
Tensile strength	ISO 527		MPa	85 - 95	75- 85	85- 95
Elongation at break	ISO 527		%	4.8 - 5.8	3.0 - 4.0	4.7 - 6.5
E modulus from Tensile Test	ISO 527		MPa	3'200 - 3'800	3'200 - 3'800	3'000 - 3'500
Flexural strength	ISO 178		MPa	155 - 165	155 - 165	150 - 160
Surface strain	ISO 178		%	5.5 - 6.59	5.2 - 6.4	5.5 - 6.5
E modulus from flesural test	ISO 178		MPa	3'000 - 3'500	3'000 - 3'600	3'000 - 3'500
Water Absorption	ISO 62	10 days at 23°C	%	0.25 - 0.35	0.30 - 0.40	0.35 - 0.45
Water Absorption	ISO 62	60 min at 100°C	%	0.15 - 0.25	0.15 - 0.25	0.15 - 0.25
Dielectric constant € (50 Hz)	IEC 60250	23°C		3.4	3.3	3.3
Dielectric constant € (50 Hz)	IEC 60250	60°C		3.5	3.3	3.3
Dielectric constant € (50 Hz)	IEC 60250	80°C		3.6	3.3	3.3
Dielectric constant € (50 Hz)	IEC 60250	100°C		4.0	3.4	3.3
Dissipation factor tan 8 (50 Hz) 23C	IEC 60250	23°C	%	0.2	0.3	0.3
Dissipation factor tan 8 (50 Hz) 23C	IEC 60250	60°C	%	0.1	0.3	0.3
Dissipation factor tan 8 (50 Hz) 23C	IEC 60250	80°C	%	0.2	0.3	0.4
Dissipation factor tan 8 (50 Hz) 23C	IEC 60250	100°C	%	0.4	0.4	0.4
Volume resistivity p	IEC 60093	23°C	Ω-cm	5.6x 10¹⁶	6.7x10¹⁶	8.8 x 10¹⁶
Volume resistivity p	IEC 60093	60°C	Ω-cm	2.3 x 10¹⁶	2.6 x 10¹⁶	2.8 x 10¹⁶
Volume resistivity p	IEC 60093	80°C	Ω-cm	2.2 x 10¹⁶	1.8 x 10¹⁶	2.1 x 10¹⁶
Volume resistivity p	IEC 60093	100°C	Ω-cm	7.3x 10¹⁵	6.5x 10¹⁵	8.2 x 10¹⁵
Electrolytic corrosion	IEC 60426		kV/mm	A-1	A-1	A-1
Tracking resistance	IEC 60112			CTI >600-0.4	CTI >600-0.4	> 600-0.6
Breakdown strength	IEC 60243-1		grade	26 - 32	25- 30	22 - 27

Product Data

Araldite MY 740 Unmodified, medium-viscosity, solvent-free epoxy resin

Viscosity	10,000-14,500	mPa·s	ISO 12058	at 25°C
Epoxy content	5.25-5.55	equiv/kg	ISO 3001	-
Density	1.15-1.20	g/cm³	ISO 1675	at 25°C
Flash point	>200	°C	ISO 1523	-
Vapour pressure	<0.01	Pa	Knudsen	at 25°C
Vapour pressure	<0.5	Pa	Knudsen	at 60°C

Aradur HY 918-1 Liquid, anhydride hardener

Viscosity	50-70	mPa·s	ISO 12058	at 25°C
Density	1.2-1.22	g/cm³	ISO 2811	at 25°C
Flash point	159	°C	ISO 1523	-
Vapour pressure	≈1	Pa	Knudsen	at 25°C
Vapour pressure	≈10	Pa	Knudsen	at 60°C

Accelerator DY 062 Liquid, tertiary amine accele

Viscosity	50-70	mPa·s	ISO 12058	at 25°C
Density	1.2-1.22	g/cm³	ISO 2811	at 25°C
Flash point	159	°C	ISO 1523	-
Vapour pressure	≈1	Pa	Knudsen	at 25°C
Vapour pressure	≈10	Pa	Knudsen	at 60°C

Processing Guidelines

Initial viscosity (Hoeppler / ISO 12058)

Condition	Unit	Value
at 25°C	mPa s	700	700	800
at 60°C	mPa s	70	70	90

Pot life (Hoeppler / ISO 12058)

Condition	Unit	Value
to 1'500 mPa s at 60°C		23.6 h	3.3 h	88 min
to 15'000 mPa s at 25C	h	> 50

Gel time (measured with Gelnorm / ISO 9396)

Condition	Unit	Value
at 60℃	h	> 36	5.6	3.3
at 80C	min	440	80	45
at 100C	min	105	19	9
at 120C	min	28	5	3
at 140C	min	10	3	2

Processing Methods

Pultrusion
Wet laminating
Trickle Impregnation
Filament Winding

Safety & Health

Handling Precautions

Personal hygiene
Safety precautions at workplace
protective clothing	overalls
gloves	essential
arm protectors	recommended when skin contact likely
goggles/safety glasses	yes
Skin protection
before starting work	Apply barrier cream to exposed skin
after washing	Apply barrier or nourishing cream
Cleansing of contaminated skin	Dab off with absorbent paper, wash with warm water and alkali-free soap, then dry with disposable towels. Do not use solvents
Disposal of spillage	Soak up with sawdust or cotton waste and deposit in plastic-lined bin
Ventilation of workshop	Renew air 3 to 5 times an hour
Ventilation of workplaces	Exhaust fans. Operatives should avoid inhaling vapours

First Aid : Contamination of the eyes by resin, hardener or mix should be treated immediately by flushing with clean, running water for 10 to 15 minutes. A doctor should then be consulted. Material smeared or splashed on the skin should be dabbed off, and the contaminated area then washed and treated with a cleansing cream (see above). A doctor should be consulted in the event of severe irritation or burns. Contaminated clothing should be changed immediately. Anyone taken ill after inhaling vapours should be moved out of doors immediately. In all cases of doubt call for medical assistance.

Storage & Handling

Storage Conditions: Store the components at 18-25°C, in tightly sealed and dry original containers. Under these conditions, the shelf life will correspond to the expiry date stated on the label. Product specific advise regarding storage can be found on product label. After this date, the product may be processed only following reanalysis. Partly emptied containers should be closed tightly immediately after use.

Other