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

Dow DOWSIL SE 1896 FR A B-EG Kit Toughener

Dow DOWSIL SE 1896 FR A/B-EG Kit Toughener is a two-part silicone elastomer system engineered for flame-retardant, high-toughness encapsulation and potting in demanding electronics and automotive applications. Featuring excellent thermal stability, low compression set, and UL94 V-0 rating, it delivers robust mechanical performance and reliable long-term protection.
  • dow dowsil se 1896 fr a b eg kit toughener_36d523bf
  • dow dowsil se 1896 fr a b eg kit toughener_36d523bf

Features Of Dow DOWSIL SE 1896 FR A B-EG Kit Toughener

  1. Two-component, room-temperature-curing silicone elastomer system designed specifically as a toughening additive for epoxy resins.

  2. Enhances impact resistance and fracture toughness of epoxy matrices without significantly compromising glass transition temperature (Tg) or modulus.

  3. Offers excellent compatibility with standard bisphenol-A and bisphenol-F epoxy systems, enabling homogeneous phase dispersion.

  4. Provides improved thermal cycling stability and reduced internal stress in cured epoxy composites.

  5. Halogen-free formulation supports flame-retardant (FR) composite design while maintaining UL 94 V-0 or V-1 performance when combined with appropriate FR fillers.

Typical Applications Of Dow DOWSIL SE 1896 FR A B-EG Kit Toughener

  1. Electronics encapsulation and potting compounds requiring high reliability under thermal shock and mechanical vibration.

  2. Structural adhesives for aerospace interior components where fire, smoke, and toxicity (FST) compliance is critical.

  3. High-performance printed circuit board (PCB) underfills and glob-tops demanding crack resistance and CTE matching.

  4. Fire-rated composite laminates for mass transit interiors, including railcar and aircraft cabin panels.

  5. Toughened epoxy tooling resins used in low-temperature mold fabrication for composite manufacturing.

Specifications Of Dow DOWSIL SE 1896 FR A B-EG Kit Toughener

Chemical TypeTwo-part addition-cure silicone elastomer (A+B)
Product FormLiquid kit: Component A (vinyl-terminated PDMS), Component B (Si-H crosslinker with Pt catalyst)
Appearance (Component A)Clear, colorless to pale yellow liquid
Appearance (Component B)Clear, colorless liquid
Primary ApplicationsToughening agent for flame-retardant epoxy systems
Key FeaturesRTV cure, halogen-free, epoxy-compatible, FST-supportive
Storage Stability (unopened, 25°C)≥12 months for Component A; ≥6 months for Component B
Recommended Mix Ratio (A:B by weight)100:1 to 100:5 (optimized per epoxy formulation)


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