导热凝胶
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SYLGARD170导热灌封胶

2022-02-17 10:31:57
SYLGARD170导热灌封胶
详细介绍:

SYLGARD™ 170 Silicone Elastomer FEATURES & BENEFITS 

Low viscosity

Long working time

Room temp or heat accelerated  cure 

Moderate thermal conductivity 

UL 94 V-0 and MIL1 Spec tested  to MIL-PRF-23586F (specifically  listed material numbers only) 

Enhanced flow and fill in narrow  spaces and around complex  geometries

Rapid, versatile cure processing  controlled by temperature

Provides stress relief in  applications where hard, rigid  encapsulants can cause damage  during thermal cycling Can be considered for uses  requiring added flame resistance  and MIL Spec applications 

Approved for railways standard  EN45545-2:  R22/R23/R24/R25/R26 – HL3 

COMPOSITION 

Two-part 

1:1 mix ratio 

Polydimethylsiloxane silicone  elastomer 1MIL: Military Specification and Standards 

Two-part, 1:1 mix, black, general purpose encapsulant with good  flowability, long working time and flame resistance APPLICATIONS

SYLGARD™ 170 Silicone Elastomer is suitable for use as an encapsulant or  potting material. 

 Potential applications:

Power supplies

Connectors 

Sensors 

Industrial controls 

Transformers

Amplifiers 

High voltage resistor packs

Relays 

TYPICAL PROPERTIES

Specification Writers: These values are not intended for use in preparing  specifications. 

 Property Unit Result 

Mix Ratio 1:1 Color (Part A) Black Viscosity (Part A) cP 3160 Pa-sec 3.1 

Viscosity (Part B) cP 1110 Pa-sec 1.1 

Viscosity (Mixed) cP 2135 Pa-sec 2.1

Specific Gravity (Uncured Part A) 1.37 

Specific Gravity (Uncured Part B) 1.37 

Thermal Conductivity btu/hr ft °F 0.277 w/mK 0.48 

Working Time at 25°C (Pot Life - minutes) minutes 15 

Cure Time at 25°C hours 24 

Heat Cure Time at 70°C minutes 25 

Heat Cure Time at 100°C minutes 10

Property Unit Result 

Durometer Shore A 47 

Dielectric Strength volts/mil 472 kV/mm 18 

Volume Resistivity ohm *cm 5.6E + 17 

Dielectric Constant at 100 Hz 2.54 

Dielectric Constant at 100 kHz 2.50 

Dissipation Factor at 100 Hz 0.002 

Dissipation Factor at 100 kHz 0.0002 

Linear CTE (by TMA) ppm/°C 275 

EN 45545-2 Certifications R22 – R23 – R24 – R25 – R26 HL3

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