ARALDITE® LY 3572 / ARADUR® HY 918 / DY 062

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

• Filament winding
• Pultrusion
• Wet laminating

• Manufacture of electrical laminates (tubes, rods, etc.)

Filament Winding

• To get good fiber wetting and reproducible building parts a temperature of 35-45°C is recommended for the impregnation bath. The mandrel temperature should be 60-120°C during winding. The gelling shall take place on the rotating mandrel at 90-120°C

Pultrusion

• To guarantee a good wetting of the fibers, the viscosity shall not exceed 2000 mPa.s. The temperature of the impregnation bath, has to be adapted correspondingly. Under these circumstances a pot life of least 90 min is achievable.
• These can also be influenced or adapted by the amount of the accelerator. It is advised to add about 2 pbw of DY 062 on 100 pbw of LY 3572.
• The accelerator is always to be added to the hardener. 

Mix Ratios 

System	ARALDITE LY3572 CI	ARADUR HY 918 CI	Accelerator DY 062 CI	Units
1	100	85	0.2	pbw
2	100	85	1.3	pbw

Physical Properties (acc Lab measuring results) 

Property	System 1	System 2	Unit	Test Method
Initial Viscosity at 25°C	250	250	mPa·s	Brookfield viscometer
Pot life to 1500 mPa·s at 60°C	30	4	h
Pot life to 15,000 mPa·s at 25°C	>50	>50	h
Geltime at 60°C	38	7	h
Geltime at 80°C	7	1.5	h
Geltime at 100°C	100	18	min
Geltime at 120°C	33	8	min

 

Component A
 

Property	Value	Unit	Test Method	Condition
Viscosity at 25°C	1100 - 1500	mPa·s	DIN 53015	25°C
Epoxy Content	5.80 - 6.05	equiv/kg	ISO 3001
Density at 25°C	1.1 - 1.2	g/cm³	ISO 1675	25°C
Flash Point	>200	°C	DIN 51758
Vapour Pressure at 25°C (Knudsen)	<0.01	Pa		25°C
Vapour Pressure at 60°C (Knudsen)	<0.5	Pa		60°C

Component B
 

Property	Value	Unit	Test Method	Condition
Viscosity at 25°C	50 - 80	mPa·s	DIN 53015	25°C
Density at 25°C	1.18 - 1.24	g/cm³	ISO 1675	25°C
Flash Point	159	°C	DIN 51758	-
Vapour Pressure at 25°C (Knudsen)	~1	Pa	-	25°C
Vapour Pressure at 60°C (Knudsen)	~10	Pa	-	60°C

Component C

Property	Value	Unit	Test Method	Condition
Viscosity at 25°C	~10	mPa·s	DIN 53015	25°C
Density at 25°C	0.88 - 0.92	g/cm³	ISO 1675	25°C
Flash Point	59	°C	DIN 51758	-
Vapour Pressure at 20°C (Knudsen)	~300	Pa	-	20°C
Vapour Pressure at 60°C (Knudsen)	~1600	Pa	-	60°C

 

System Preparation

 

Filament Winding

• To get good fiber wetting and reproducible building parts a temperature of 35-45°C is recommended for the impregnation bath. The mandrel temperature should be 60-120°C during winding. The gelling shall take place on the rotating mandrel at 90-120°C

Pultrusion

• To guarantee a good wetting of the fibers, the viscosity shall not exceed 2000 mPa.s. The temperature of the impregnation bath, has to be adapted correspondingly. Under these circumstances a pot life of least 90 min is achievable.
• These can also be influenced or adapted by the amount of the accelerator. It is advised to add about 2 pbw of DY 062 on 100 pbw of LY 3572.
• The accelerator is always to be added to the hardener. 

 

Mix Ratios

 

System	ARALDITE LY3572 CI	ARADUR HY 918 CI	Accelerator DY 062 CI	Units
1	100	85	0.2	pbw
2	100	85	1.3	pbw

 

Physical Properties (acc Lab measuring results) 

 

Property	System 1	System 2	Unit	Test Method
Initial Viscosity at 25°C	250	250	mPa·s	Brookfield viscometer
Pot life to 1500 mPa·s at 60°C	30	4	h
Pot life to 15,000 mPa·s at 25°C	>50	>50	h
Geltime at 60°C	38	7	h
Geltime at 80°C	7	1.5	h
Geltime at 100°C	100	18	min
Geltime at 120°C	33	8	min

 

Mechanical & Electrical Properties

 

Component	System 1 (Cured 80°C/2h + 80°C/2h + 120°C/24h)	System 2 (Cured 120°C/2h)
ARALDITE LY3572 CI	100	100
ARADUR HY 918 CI	85	85
Accelerator DY 062	0.2	1.3

 

Property	System 1	System 2	Unit	Test Method
Tensile Strength	70 - 80	70 - 80	MPa	ISO R 527: 1993
Elongation at Break	4.0 - 5.0	4.0 - 5.0	%	-
E Modulus from Tensile Test	3100 - 3200	3150 - 3250	MPa	-
Flexural Strength at 23°C	130 - 140	130 - 140	MPa	ISO 178
E-Modulus at 23°C	5.5 - 6.5	5.5 - 6.5	MPa	ISO 178
Glass Transition Temperature (DSC)	92 - 102	92 - 102	°C	IEC 61006
Breakdown Strength	21 - 25	22 - 26	kV/mm	IEC 60243-1
Dissipation Factor (tanδ at 50 Hz)	0.3	0.3	%	IEC 60250
Permittivity (εr at 50 Hz)	3.3	3.3	-	IEC 60250
Tracking Resistance	CTI>600-<1	CTI>600-<1	-	IEC 60112
Electrolytic Corrosion	A-1	A-1	-	IEC 60426
Volume Resistivity	9.1	7.8	10^16 Ω·cm	IEC 93 / DIN 53482

Guideline Values

Component A

Property	Value	Unit	Test Method	Condition
Viscosity at 25°C	1100 - 1500	mPa·s	DIN 53015	25°C
Epoxy Content	5.80 - 6.05	equiv/kg	ISO 3001
Density at 25°C	1.1 - 1.2	g/cm³	ISO 1675	25°C
Flash Point	>200	°C	DIN 51758
Vapour Pressure at 25°C (Knudsen)	<0.01	Pa		25°C
Vapour Pressure at 60°C (Knudsen)	<0.5	Pa		60°C

 

Component B
 

Property	Value	Unit	Test Method	Condition
Viscosity at 25°C	50 - 80	mPa·s	DIN 53015	25°C
Density at 25°C	1.18 - 1.24	g/cm³	ISO 1675	25°C
Flash Point	159	°C	DIN 51758
Vapour Pressure at 25°C (Knudsen)	~1	Pa		25°C
Vapour Pressure at 60°C (Knudsen)	~10	Pa		60°C

 

Component C

 

Property	Value	Unit	Test Method	Condition
Viscosity at 25°C	approx. 10	mPa·s	DIN 53015	25°C
Density at 25°C	0.88 - 0.92	g/cm³	ISO 1675	25°C
Flash Point	59	°C	DIN 51758
Vapour Pressure at 20°C (Knudsen)	approx. 300	Pa		20°C
Vapour Pressure at 60°C (Knudsen)	approx. 1600	Pa		60°C

 

System Preparation

 

Filament Winding

• To get good fiber wetting and reproducible building parts a temperature of 35-45°C is recommended for the impregnation bath. The mandrel temperature should be 60-120°C during winding. The gelling shall take place on the rotating mandrel at 90-120°C

Pultrusion

• To guarantee a good wetting of the fibers, the viscosity shall not exceed 2000 mPa.s. The temperature of the impregnation bath, has to be adapted correspondingly. Under these circumstances a pot life of least 90 min is achievable.
• These can also be influenced or adapted by the amount of the accelerator. It is advised to add about 2 pbw of DY 062 on 100 pbw of LY 3572.
• The accelerator is always to be added to the hardener. 

 

Mix Ratios

 

System	ARALDITE LY3572 CI	ARADUR HY 918 CI	Accelerator DY 062 CI	Units
1	100	85	0.2	pbw
2	100	85	1.3	pbw

 

Physical Properties (acc Lab measuring results) 

 

Property	System 1	System 2	Unit	Test Method
Initial Viscosity at 25°C	250	250	mPa·s	Brookfield viscometer
Pot life to 1500 mPa·s at 60°C	30	4	h
Pot life to 15,000 mPa·s at 25°C	>50	>50	h
Geltime at 60°C	38	7	h
Geltime at 80°C	7	1.5	h
Geltime at 100°C	100	18	min
Geltime at 120°C	33	8	min

 

Mechanical & Electrical Properties

 

Component	System 1 (Cured 80°C/2h + 80°C/2h + 120°C/24h)	System 2 (Cured 120°C/2h)
ARALDITE LY3572 CI	100	100
ARADUR HY 918 CI	85	85
Accelerator DY 062	0.2	1.3

 

Property	System 1	System 2	Unit	Test Method
Tensile Strength	70 - 80	70 - 80	MPa	ISO R 527: 1993
Elongation at Break	4.0 - 5.0	4.0 - 5.0	%	-
E Modulus from Tensile Test	3100 - 3200	3150 - 3250	MPa	-
Flexural Strength at 23°C	130 - 140	130 - 140	MPa	ISO 178
E-Modulus at 23°C	5.5 - 6.5	5.5 - 6.5	MPa	ISO 178
Glass Transition Temperature (DSC)	92 - 102	92 - 102	°C	IEC 61006
Breakdown Strength	21 - 25	22 - 26	kV/mm	IEC 60243-1
Dissipation Factor (tanδ at 50 Hz)	0.3	0.3	%	IEC 60250
Permittivity (εr at 50 Hz)	3.3	3.3	-	IEC 60250
Tracking Resistance	CTI>600-<1	CTI>600-<1	-	IEC 60112
Electrolytic Corrosion	A-1	A-1	-	IEC 60426
Volume Resistivity	9.1	7.8	10^16 Ω·cm	IEC 93 / DIN 53482

• The components have to be stored under dry conditions at 18-25°C, in tightly sealed original containers.
• Under these conditions, the shelf life will correspond to the expiry date stated on the label. After this date, the product may be processed only following reanalysis.
• Partly emptied containers should be closed tightly immediately after use.