DYMAX 9-984-LVF

Harmonization Code : 3910.00.00.90 | Silicones in Primary Forms; Others

DYMAX 9-984-LVF

Main features

  • Rapid UV cure
  • Bright fluorescent inspection
  • Strong substrate adhesion

Product Description

Dymax 9-984-LVF is a single-component, 100% solids UV-curable conformal coating formulated for electronic circuit board protection. Designed for rapid room-temperature cure under long-wave UV light (320-380 nm), thin coating layers cure within seconds while producing bright fluorescence for inspection under black light. The coating provides excellent adhesion to metals, ceramics, and glass-filled epoxy substrates and offers secondary heat-curing capability for shadowed areas on densely populated circuit boards. With RoHS 2015/863/EU compliance, low viscosity, durable cured properties, and long-lasting fluorescence, 9-984-LVF is suitable for electronics manufacturing environments requiring efficient coating application and cure verification.

Key features

  • Rapid UV cure: Thin coating layers cure in seconds when exposed to appropriate UV light intensity.
  • Bright fluorescent inspection: Retains high-brilliance fluorescence after curing to support black-light inspection processes.
  • Strong substrate adhesion: Exhibits excellent adhesion to metal, ceramic, and glass-filled epoxy surfaces.

Applications / Suitable for

  • Conformal coating of electronic circuit boards
  • Electronics manufacturing and assembly operations
  • UV-cured protective coatings requiring fluorescent inspection
  • Densely populated circuit boards requiring secondary heat cure in shadowed areas
Product Family

DYMAX 9-984-LVF

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TDS, SDS & Technical Documents

Technical Specifications

General Properties
Appearance
Appearance at room temperature.
Single Component/Clear Fluorescing Liquid
Specific Gravity
Specific gravity (SG) is the ratio of the density of a substance to the density of a reference substance; equivalently, it is the ratio of the mass of a substance to the mass of a reference substance for the same given volume. For liquids, the reference substance is almost always water (1), while for gases, it is air (1.18) at room temperature. Specific gravity is unitless.
1.05
Physical Properties
Viscosity
Viscosity is a measurement of a fluid’s resistance to flow. Viscosity is commonly measured in centiPoise (cP). One cP is defined as the viscosity of water and all other viscosities are derived from this base. MPa is another common unit with a 1:1 conversion to cP. A product like honey would have a much higher viscosity -around 10,000 cPs- compared to water. As a result, honey would flow much slower out of a tipped glass than water would. The viscosity of a material can be decreased with an increase in temperature in order to better suit an application
150 mPa.s
Mechanical Properties
Elongation
Elongation is the process of lengthening something. It is a percentage that measures the initial, unstressed, length compared to the length of the material right before it breaks. It is commonly referred to as Ultimate Elongation or Tensile Elongation at break.
5 %
Chemical Properties
Water Absorption
0.4 %
Other Properties
Storage Temperature
10 - 32 °C

Additional Information

Technical properties

As-supplied / before-processing properties

Typical uncured properties of Dymax 9-984-LVF prior to UV curing.

Property Value Unit Method / condition
Solvent Content None - Typical uncured property
Appearance Clear fluorescing liquid - Single-component material
Specific Gravity 1.05 - Typical uncured property
Viscosity 150 cP Nominal, ASTM D-1384
Shelf Life 18 months 10°C to 32°C, unopened container
Technical properties

After-processing / final-state properties

Typical cured properties after UV curing.

Property Value Unit Method / condition
Durometer Hardness D80 Shore D ASTM D-224
Tensile Strength at Break 6000 psi ASTM D-638
Elongation at Break 5 % ASTM D-638
Dielectric Strength 1800 V/mil ASTM D-1304
Dielectric Constant 3.4 - 1 MHz, ASTM D-1304

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