NuSil™ R2-6755

1 of 565 products in this brand
NuSil™ R2-6755 is a clear silicone elastomer.

Product Type: Adhesive, Encapsulant

Application Area: LEDs

Chemical Family: Silicones

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Knowde Enhanced TDS

Identification & Functionality

Chemical Family
CAS No.
68909-20-6

Features & Benefits

Product Highlights
  • Three-part, optically clear, pourable silicone system
  • 1:1:0.1 Mix Ratio (Part A:B:C)
  • Incorporates an adhesion promoter to help adhere to polycarbonate and other difficult substrates
  • Offers excellent physical properties and a broad operating temperature range

Applications & Uses

Application Area
Applications
  • As an adhesive or encapsulant for applications requiring optical clarity and a 1.46 refractive index
  • Use as an optical coupling agent, as a lens sealing material, or for other photonics applications including HBLED’s, photo detectors, lasers, discrete optics and flat panel displays
Instructions for Use

Mixing

Mix in a ration of 1:1:0.1, Part A: Part B: Part C. If mixing by hand, take care to minimize air entrapment while mixing.

Vacuum Deaeration

Remove air entrapped during mixing by common vacuum deaeration procedure, observing all applicable safety precautions. Slowly apply vacuum, up to 28 inches Hg, to a container rated for use and of volume at least four times that of material being deaerated. Hold vacuum until presence of air is no longer evident.

Substrate Consideration

Cures in contact with most materials common to electronic assemblies. Exceptions include butyl and chlorinated rubbers, some RTV silicones and unreacted residues of some curing agents. Units being encapsulated or potted should be clean and free of surface contaminants. Containers and dispensers should also be clean and dry. Prevent cure inhibition by washing all containers with clean solvent or volatizing the contaminants by heat.

Note: Some bonding applications may require the use of a primer. NuSil Technology LLC CF1-135 silicone primer is recommended.

Adjustable Cure Schedule

Product cures at room temperature and a wide range of elevated temperatures and cure times to accommodate different production needs.

Properties

Appearance
Translucent
Typical Properties
ValueUnitsTest Method / Conditions
Viscosity45,000 (45,000 )cP (Mpa*s)
Durometer Type A20.0
Tensile550 (3.79 )psi (MPa)
Elongat ion325.0%
Refractive Index1.46
Specific Gravity1.14
Stress at Strain 100 %70 (0.48)psi (MPa)
Tack Free Time1.0hours
Tear25 (4.41 )ppi (kN/m)
Volat ile Content0.8%
Cured Properties
ValueUnitsTest Method / Conditions
Cure SystemPlatinum

Packaging & Availability

Regional Availability
  • Asia Pacific
  • Europe
  • Latin America
  • North America