LINQBOND PM-PU514 | Two-component Polyurethane Potting Material

Harmonization Code : 3909509090 |   Polyurethanes potting
Main features
  • Low Viscosity
  • Excellent Thermal Conductivity
  • Wide Temperature Range

Product Description

LINQBOND PM-PU514 is a user-friendly, two-component polyurethane system designed for electronic and filtration applications. It is formulated to have low viscosity, ensuring ease of processing. PM-PU514 is ideal for capacitor potting, PCB encapsulation, filter sealing (including HEPA), and cable jointing.

LINQBOND PM-PU514  boasts a pot life of 25-30 minutes achieving full curing within 10-12 hours at 35°C. Its thermal conductivity >0.8 W/m·K, and wide temperature working range of -60 to +135°C make it a robust solution for various industrial applications. Additionally, with a UL 94 V-0 flammability rating guarantees strong performance and outstanding reliability.. Both Parts A & B are available in 250kg drums or 25kg plastic buckets. Contact us for more information. 

Key Benefits

  1. Low Viscosity: PM-PU514 offers low viscosity, ensuring easy application and thorough penetration into intricate components, enhancing the reliability of potting and sealing processes.
  2. Excellent Thermal Conductivity: With a thermal conductivity greater than 0.8 W/m·K, PM-PU514 effectively dissipates heat, protecting sensitive electronic components from thermal damage.
  3. Wide Temperature Range: The product's ability to perform in extreme temperatures, ranging from -60 to +135°C, makes it suitable for a variety of demanding environments, ensuring long-term stability and performance
  4.  

Key Applications

  • Capacitor potting
  • PCB potting
  • Filter sealing/HEPA filter
  • Cable jointing
Product Family
PM-PU514  
25 kg
Bucket

Catalog Product

Unlike other products we offer, the products listed on this page cannot currently be ordered directly from the website.
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Packaging
TDS, SDS & Technical documents

Technical Specifications

General Properties
Appearance
Appearance
Appearance at room temperature.
 Off-white
Pot Life 25 - 30 minutes
Gel Time
Gel Time
Gel time is the time it takes for a material to reach such a high viscosity (gel like) that it is no longer workable.

It is usually measured for different temperature conditions and even though it does not refer to full cure it is advisable to never move or manipulate the material after it reached its gel time since it can lose its desired end properties.
Gel Time at 30 °C 2,700 - 3,000 sec
Physical Properties
Viscosity
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
 2,400 3,500 mPa.s
Mechanical Properties
Hardness
Hardness
Hardness is a dimensionless quantity. There is no direct relationship between measurements in one scale and their equivalent in another scale or another hardness test.
Durometer (Shore A) 60 - 70
Thermal Properties
Thermal Conductivity
Thermal Conductivity
Thermal conductivity describes the ability of a material to conduct heat. It is required by power packages in order to dissipate heat and maintain stable electrical performance.

Thermal conductivity units are [W/(m K)] in the SI system and [Btu/(hr ft °F)] in the Imperial system.
 0.8 W/m.K
Curing Conditions
Curing Schedule
Curing Schedule
Curing schedule is the time and temperature required for a mixed material to fully cure. While this applies to materials that cure with heat, there are also other materials that can be cured with UV.

Even though some materials can cure on ambient temperatures, others will require elevated temperature conditions to properly cure.

There are various curing schedules depending on the material type and application. For heat curing, the most common ones are Snap cure, Low temperature cure, Step cure and Staged cure.

Recommended cure type, schedule, time and temperature can always be found on the Technical data sheets.
Full Cure Time 3 - 5 hours

Additional Information

PM-PU514 Part A & B Technical Specifications

Property Part A Part B Unit
Appearance Ivory Resin Brownish-yellow Liquid —
Viscosity 3,000 - 5,000 150 - 250 cP
Density 1.4 - 1.5 1.2 - 1.24 g/cm3

PM-PU514 Mixing Ratio

Part A (by weight) Part B (by weight)
100 25

Directions for Use

  • Thoroughly stir both parts prior to mixing together.
    • Mixing by Hand: Combine the required parts byweight, mix until completely mixed. Exercise caution while mixing to
      minimize air entrapment. Avoid foreign containments.
    • Mixing and dispensing by automated equipment: Use properly rationed equipment. Use mixing system that can
      properly mix part A & B.