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    ROL   CH0003245351

VON ROLL HOLDING AG

(ROL)
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Von Roll : Casting, Potting, Encapsulation Systems

09/01/2021 EST

MARKETS // PRODUCTS

CASTING,

POTTING, ENCAPSULATION SYSTEMS

2 | CASTING, POTTING, ENCAPSULATION SYSTEMS

WE

ENABLE

ENERGY

As one of the oldest industrial companies in Switzerland, founded in 1803, we focus on products and systems for power generation, transmission and distribution, rotating machines and mechanical engineering. Von Roll is the global market leader for insulation products and the only company to offer the complete range of insulation prod- ucts, composites, consulting, tests and services for the electrotechnical industry.

For more than 100 years, we have been making outstanding contributions to this market, developing a number of highly innovative products that have enabled both steady increases in power output and smaller and more compact machines.

Customers enjoy the following benefits:

One single source for all insulating materials

Thorough expertise from power generation and transmission to its efficient utilization

Proven compatibility for system components

Testing at Von Roll of both materials and systems

Consulting for applications and technologies Training in insulation materials and systems

COATED MATERIALS SELECTOR GUIDE | 3

POLYURETHANES

Polyurethane systems improve overall productivity. Potting and casting can be quickly achieved thanks to fast hardening at room temperature. This is a noticeable advantage over traditional materials such as silicones and epoxies.

The main advantages of polyurethane are:

Adaptable gel time

Customized processability

Variable flexibility of the cured resin

Low shrinkage

Low exothermic reactions

Excellent resistance to vibrations and rising temperature

Suitable for a wide range of operating temperatures, from - 60°C up to 150°C

Dolph's® polyurethane resins are designed to efficiently integrate many fields of application in the electronic, electrical, power-supply devices, medical, automotive, marine,

railway, aircraft and military industries.

Mix viscosity

Thermal

Product

Mix

at 25°C

Shore

conductivity

Main

name

ratio

(cps)

hardness

W/m.K

UL 94

characteristics

Damival

Compliant with EN45545-2 railway standard, UL

100/35

2000

87D

0.65

V0

listed (94 V0, 94 HB, RTI 120), high glass-transi-

13518

tion temperature. Available in several colors.

Damival

100/24

1500

50D

0.33

n/a

Semi-rigid, hydrophobic, good thermal

13524

resistance, low viscosity grade.

Damival

Semi-rigid resin, compliant with EN45545-2

100/16

3000

50D

0.78

V0

railway standard, Good thermal conductivity

13552

and chemical resistance.

Compliant with EN45545-2 railway standard,

Damival

100/13

3000

90A

0.81

V0

Good thermal conductivity and high chemical

13553

resistance. Excellent adhesion and usable up to

150°C.

Damival

100/17

1400

85A

0.80

V0

Good thermal conductivity with low viscosity,

13554

semi-flexible resin.

DOLPHON®

Semi-rigid resin, available in several colors,

100/16

2100

40D

0.75

V0

included in UL system DV-155 Tab. IX,

1138

file E317429.

4 | COATED MATERIALS SELECTOR GUIDE

POLYBUTADIENE POLYURETHANES

Polybutadiene-based polyurethanes provide specific advantages:

Low glass-transition temperature < - 40°C

Flexible even in very cold conditions

Excellent water and moisture resistance

Good adhesion on most surfaces

Excellent resistance to vibrations and rising temperature

Suitable for a wide range of operating temperatures, from - 60°C up to 150°C

Cost-effective substitutes for silicone elastomers up to 150°C operating temperature

This polybutadiene range is perfectly suited to electronic protection application needs.

Mix viscosity

Thermal

Product

Mix

at 25°C

Shore

conductivity

Main

name

ratio

(cps)

hardness

W/m.K

UL 94

characteristics

Damival

100/25

3000

75A

0.24

n/a

Very hydrophobic, long-term sea water

13653

resistance. High adhesion.

Damival

100/22

3300

51A

0.28

n/a

MDI-free system. High thermal resistance:

13681

usable up to 150°C.

Damival

MDI-free system. High thermal conductivity.

100/9

5000

46A

0.95

V0

Usable up to 150°C. Compliant with

13682

EN45545-2 railway standard.

Damival

100/9

5600

61A

1.3

V0

MDi free system, high thermal resistance up to

13683

150°C. Highest thermal conductivity.

DOLPHON®

Very flexible, with excellent moisture

100/15

3000

45A

0.35

n/a

resistance even in severe conditions

1109

such as PCT.

DOLPHON®

100/20

2000

25A

0.20

n/a

Very soft system, with low viscosity.

1120

Clear potting for low-stress applications.

Potting of a sensor as it is used in the automated industry.

Protection of electronic assembly.

COATED MATERIALS SELECTOR GUIDE | 5

EPOXIES

Epoxy systems include a resin and a specific hardener that must be blended together. Cold-curing resins are suitable up to class F (155°C) insulating systems. Hot-curing epoxies can be used in potting of class H (180°C) coils and windings. They can be processed under vacuum to improve penetration of the resin.

The main advantages of epoxies are:

Low viscosity

High glass-transition temperature

Dimensional stability at elevated temperatures

High thermal conductivity >1W/m.K

Resistance to vibration and thermal shock

Outstanding adhesion

Thermal endurance up to 180°C

Resistance to moisture, water and chemicals

Mix

Max.

Thermal

Product

Mix

Typical

viscosity

operating

conductivity

Main

name

ratio

curing °C

(mPa.s)

temperature

W/m.K

characteristics

Damival

1000

Semi-rigid epoxy, high thermal shock resis-

100/22

60-80

180°C

0.75

tance. Low-temperature curing, free of

15350FL

50°C

anhydride. Class H 180°C UL1446. Very low

exotherm.

Damival

100/100

120

500

180°C

0.45

Semi-rigid epoxy. Excellent resistance to

thermal shocks, low viscosity for good

15225

80°C

impregnation.

DOLPHON®

100/10

25

2500

155°C

0.2

Flexibilized epoxy system, unfilled.

1024

25°C

DOLPHON®

100/5

25

6000

155°C

0.5

Black filled resin with good thermal

1078

25°C

conductivity and low shrinkage.

2000

UL94 V0 approved, good thermal conductivity.

DOLPHON®

100/13

25

180°C

0.8

Low mix viscosity. Good thermal shock

1114

25°C

resistance. EN45545-2 approval for railway

application.

3000

Semi-rigid epoxy. Shore hardness D45.

DOLPHON®

100/20

25

155°C

0.9

Cold-curing system. Low shrinkage.

1107

25°C

Self- extinguishing according to UL94 V0.

MDI-free alternative to polyurethane resins.

DOLPHON®

100/9

25

3000

180°C

1.3

High thermal conductivity with low mix

viscosity. Self-extinguishing according to

1123

25°C

UL94 V0. Available in several colors.

DOLPHON®

100/100

120

4500

180°C

0.7

Good mechanical properties at high tempera-

ture, high glass-transition temperature.

1037

60°C

Excellent crack resistance after thermal shocks.

DOLPHON®

750

Good mechanical properties at high tempera-

100/100

150

180°C

1.3

ture. Low coefficient of thermal expansion

1220

80°C

(CTE). High thermal conductivity.

Low mix viscosity.

Disclaimer

Von Roll Holding AG published this content on 01 September 2021 and is solely responsible for the information contained therein. Distributed by Public, unedited and unaltered, on 23 September 2021 06:51:01 UTC.


© Publicnow 2021
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Sales 2020 212 M 230 M 230 M
Net income 2020 -24,5 M -26,5 M -26,5 M
Net cash 2020 45,0 M 48,7 M 48,7 M
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Nbr of Employees 933
Free-Float 31,5%
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