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Product Basic Attributes
Dowsil LDC2577D is a single-component, room-temperature curing
silicone dispersion coating designed for electronic applications.
It offers excellent moisture resistance, low stress, and durability
across a wide temperature range. The product is a translucent
liquid with a viscosity of 104 centipoise (0.1 Pascal-seconds) and
cures to form a flexible, abrasion-resistant layer.
Product Overview
Dowsil LDC2577D is a low-stress silicone elastomer specifically
formulated for protecting printed circuit boards (PCBs) and
electronic components from moisture, vibration, and harsh operating
environments. It provides reliable dielectric insulation and
ensures long-term performance in demanding conditions. The coating
is easy to apply via dipping, spraying, or automated methods and
requires only atmospheric moisture for curing, though mild heating
can accelerate the process. Its fast room-temperature cure and
reworkability make it an ideal choice for high-efficiency
electronics manufacturing.
Special Properties
This coating stands out for its low stress during and after curing, minimizing stress on sensitive
electronic components. It achieves fast room-temperature curing (5 minutes at 25°C) with optional heat acceleration (2 minutes at
60°C/15% RH). The cured film has a Shore D hardness of 23, balancing flexibility and durability. Electrical properties
include a dielectric strength of 660 V/mil (26 kV/mm) and volume resistivity of 6×10¹³ Ω·cm, ensuring robust insulation. Notably, it maintains performance
across a broad temperature range (-45°C to 200°C) and is easily reworkable for repair or modification.
Application Scenarios
Dowsil LDC2577D is widely used in: