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UR3543ABTF

UR3543ABTF is a two-component, self-leveling viscosity polyurethane that cures at room temperature. This material is perfect for encapsulating, sealing, and protecting electronic assemblies and components. It offers excellent adhesion to a wide range of surfaces, including common metals and engineering plastics, making it a reliable choice for electronic applications.

RTU Product Type: 2K (2 component) Adhesive, Structural Adhesive

Application Area: Electronic Assemblies, Electronic Components, Electronic Encapsulation, Sealing

Compatible Substrates & Surfaces: Engineering Plastics, Metal

Chemical Family: Polyurethanes (PU)

Features: Abrasion Resistant, Bleach Resistant, Caustic Solution Resistant, Excellent Environmental Resistance, Excellent Flowability, Fungus Resistant, Good Adhesion, Good Impact Strength, Non Corrosive, Non-Conductive, Room Temperature Curing, Self-Leveling

Technical Data Sheet
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Enhanced TDS

Identification & Functionality

Chemical Family
Polyurethanes (PU)
RTU Product Type
2K (2 component) Adhesive,
Structural Adhesive
Technologies
Adhesives & Sealants
Product Families
Adhesives & Sealants — Functional Adhesives
Structural Adhesives

Features & Benefits

Labeling Claims
Plasticizer-free,
Solvent-free
Ready-to-Use Product Features
Abrasion Resistant,
Bleach Resistant,
Caustic Solution Resistant,
Excellent Environmental Resistance,
Excellent Flowability,
Fungus Resistant,
Good Adhesion,
Good Impact Strength,
Non Corrosive,
Non-Conductive,
Room Temperature Curing,
Self-Leveling
Features and Benefits
  • No solvents, plasticizers, or low volatile components
  • 1:1 mix ratio by volume, designed for easy use with automated dispense systems
  • Excellent moisture penetration seal
  • Extreme environmental and abrasion resistance
  • Room temperature curing, no heat required
  • Non-conductive, non-corrosive
  • Outstanding resistance to corrosive acids, caustic and bleach solutions found in chemicals cleaners
  • High impact strength
  • Will not induce stress cracking in polycarbonate or polyethylene parts
  • Fungus-resistant does not support growth

Applications & Uses

Markets
Electrical & Electronics
Applications
Electrical & Electronics — Packaging & Assembly
Adhesives & Sealants
Application Area
Electronic Assemblies,
Electronic Components,
Electronic Encapsulation,
Sealing
Compatible Substrates & Surfaces
Engineering Plastics,
Metal

Properties

Cured Mechanical Properties
ValueUnitsTest Method / Conditions
Overlap Shear Strength (at 20% glass fill, Abraded Polycarbonate)12MPa-
Overlap Shear Strength (Abraded Nylon 6-6)8.22MPa-
Overlap Shear Strength (Abraded Stainless Steel)10.69MPa-
Overlap Shear Strength (IPA Wipe E-Coat Steel)8.61MPa-
Overlap Shear Strength (Abraded Aluminum)13.43MPa-
Tensile Strength (at 25°C 50% RH)4.5MPaASTM D638
Elongation at Break (at 25°C 50% RH)168%ASTM D638
Hardness45Shore DASTM D2240
Uncured Properties
ValueUnitsTest Method / Conditions
Full Cure (at 23°C)5 - 7days-
Specific Gravity1.07--
Viscosity (Mixed)20500cPs-
Viscosity (Part A)16500cPs-
Viscosity (Part B)25000cPs-
Gel Time40min-
Volume Mix Ratio1 - 1--
Weight Mix Ratio100 - 115--
Full Cure (at 70°C)6hr-
General Instructions
  • Surfaces to be bonded must be clean, dry and free from grease, oil, wax, weak oxide films and other contaminants. Bring both components to room temperature prior to mixing. Measure out specified amounts of parts A and B and mix, without introducing bubbles, until homogenous. Meter-mix equipment equipped with an automatic purge is recommended for higher volume applications. Contact your H.B. Fuller representative for suggested application equipment to suit your specific needs. We recommend that containers be purged with nitrogen after they are opened to the air and not all the material is used.

Packaging & Availability

Regional Availability
  • North America

Storage & Handling

Shelf Life
6 months (unopened)
Storage Information
  • UR3543ABTF should be stored in a cool dry place out of direct sunlight. The shelf life is from date of manufacture. Shelf life is based on the products being stored properly at temperatures between 16°C and 25°C. Exposure to temperatures above 25°C will reduce the shelf life. This product should not be frozen. Purge opened containers with dry nitrogen inert blanketing gas before resealing.