Features Of Dow DOWSIL EA-7000 Silicone Adhesive
High-performance, one-component, addition-cure silicone adhesive with excellent thermal stability.
Low modulus and high elongation for superior stress relief in dynamic or thermally cycled assemblies.
Fast room-temperature tack-free time and rapid cure upon heating (e.g., 15 min at 125°C).
Excellent adhesion to challenging substrates including plastics, metals, glass, and coated surfaces without primers.
UL 94 V-0 rated for flame retardancy and compliant with RoHS and REACH regulations.
Typical Applications Of Dow DOWSIL EA-7000 Silicone Adhesive
LED lighting module bonding and encapsulation in high-brightness and automotive headlamp assemblies.
Thermal interface bonding of power electronics, inverters, and EV battery modules.
Sealing and bonding of sensors, actuators, and MEMS devices requiring long-term reliability under thermal cycling.
Structural assembly of medical device housings and diagnostic equipment requiring biocompatibility support.
Specifications Of Dow DOWSIL EA-7000 Silicone Adhesive
| Chemical Type | Platinum-catalyzed addition-cure silicone |
| Product Form | Paste, thixotropic, syringeable |
| Appearance | Opaque white to off-white |
| Primary Applications | Bonding, sealing, and potting of electronic and optical components |
| Key Features | Low modulus, high elongation (>150%), fast tack-free time (<30 min RT) |
| Benefits | Reduced thermal stress, no by-products, excellent aging resistance |
| Cure Mechanism | Heat-activated addition cure (RT tack-free, accelerated above 80°C) |
| Regulatory Compliance | RoHS 2015/863, REACH SVHC-free, UL 94 V-0 (per ASTM D3801) |
Dow DOWSIL EA-7000 Silicone Adhesive – Frequently Asked Questions (FAQ)
Q1: What substrates does DOWSIL EA-7000 bond well to?
A: DOWSIL EA-7000 exhibits strong adhesion to a broad range of substrates including glass, aluminum, stainless steel, and many engineering plastics such as polycarbonate and ABS. Surface preparation—such as cleaning and, where appropriate, priming—is recommended to optimize bond performance.
Q2: How long does it take for DOWSIL EA-7000 to fully cure under ambient conditions?
A: DOWSIL EA-7000 is a one-component, moisture-curing silicone adhesive. It typically achieves handling strength within 24–48 hours at room temperature and standard humidity, with full cure progressing over several days depending on joint thickness, temperature, and relative humidity.
Q3: Is DOWSIL EA-7000 suitable for outdoor or weather-exposed applications?
A: Yes—DOWSIL EA-7000 offers excellent resistance to UV radiation, ozone, rain, and wide temperature fluctuations, making it well-suited for long-term outdoor use in architectural glazing, transportation, and industrial enclosures.
Q4: Can DOWSIL EA-7000 be painted over after curing?
A: Paint compatibility depends on the paint system used. Many acrylic and polyurethane-based coatings have been successfully applied over fully cured DOWSIL EA-7000; however, adhesion testing under end-use conditions is strongly advised prior to full-scale implementation.
Q5: Does DOWSIL EA-7000 release acetic acid during cure?
A: No—DOWSIL EA-7000 is an acetoxy-free, neutral-cure silicone adhesive. It cures via release of low-molecular-weight alcohols rather than acidic byproducts, minimizing corrosion risk to sensitive metals and electronics.
English
Español
tiếng việt
русский
