Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Dow DOWSIL EA-4600 HM RTV Black UV Adhesive

Dow DOWSIL EA-4600 HM RTV Black UV Adhesive is a high-modulus, black silicone adhesive combining rapid UV cure with secondary moisture-cure capability. It delivers excellent adhesion to plastics, metals, and glass, plus superior UV resistance and thermal stability. Ideal for optical bonding and electronics assembly where fast processing and long-term reliability are critical.
  • dow dowsil ea 4600 hm rtv black uv adhesive_cd3f747d
  • dow dowsil ea 4600 hm rtv black uv adhesive_cd3f747d

Features Of Dow DOWSIL EA-4600 HM RTV Black UV Adhesive

  1. Fast, dual-cure mechanism: UV light initiation followed by moisture-cure RTV secondary cure for shadowed area reliability.

  2. High modulus elastomeric performance with excellent tear resistance and long-term mechanical stability.

  3. Optimized black pigmentation for consistent UV absorption and uniform through-cure in demanding optical assemblies.

  4. Low ionic content and halogen-free formulation suitable for sensitive electronic and optoelectronic applications.

  5. Excellent adhesion to challenging substrates including glass, stainless steel, aluminum, and engineered plastics without primers.

Typical Applications Of Dow DOWSIL EA-4600 HM RTV Black UV Adhesive

  1. LED packaging and chip-on-board (COB) encapsulation requiring thermal and optical stability.

  2. Automotive lighting assemblies, including headlamp and taillamp bonding and sealing.

  3. Optical sensor housings and camera module assembly in consumer electronics and ADAS systems.

  4. Medical device components where biocompatibility support and low outgassing are critical.

Specifications Of Dow DOWSIL EA-4600 HM RTV Black UV Adhesive

Chemical TypeUV-initiated, moisture-curing silicone elastomer
Product FormPaste (thixotropic, non-sag)
AppearanceOpaque black
Primary ApplicationsStructural bonding, optical sealing, and environmental protection in electronics and lighting
Key FeaturesDual-cure, high modulus, UV-stable, low stress
BenefitsProcess flexibility, shadow-area reliability, long-term durability under thermal cycling
Cure MechanismUV exposure (320–390 nm) + ambient moisture
Storage ConditionsRefrigerated at 2–8°C; protect from moisture and UV light


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