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JUNBOND JB21 Polyurethane Construction Sealant

Junbond® JB21 is one-component, moisture curing modified polyurethane sealant. Good sealing performance,no corrosion and no pollution to base material and environment-friendly. Good bonding performance with cement and stone.


Overview

Applications

Technical Data

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Application

Suitable for Bonding of galvanized sheet with cement, tile, stone, and metal substrates;

Indoor and outdoor expansion joint sealing of concrete. 

Features

  Environment friendly.

  Good weather-resistance.

Bonds well with many substrate

Packing

 

  • Cartridge:310ml                           
  • Sausage: 400ml and 600ml    
  • Barrel: 5 gallons(24kgs) and 55 gallons(240kgs)

 

Storage and shelf live

 

  • Transport: Keep away the sealed product from moisture, the sun, high temperature and avoid collisions.
  • Storage: Keep sealed into cool, dry place.
  • Storage temperature: 5~25℃. Humidity: ≤50%RH.
  • Cartridge and Sausage 9 month, barrel package 6 months

 

Color

● White/black/grey / customer required


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    Suitable for Bonding of galvanized sheet with cement, tile, stone, and metal substrates;

    Indoor and outdoor expansion joint sealing of concrete.

     

     

     

     

     

     

     Items  Test Standard  Requirement  Typical Value
     Appearance  / Black,Grey,White,homogeneous paste, No bubbles and gels  /

    Density

    GB/T 13477.2

    1.5±0.1

    1.54

    Extrudability(ml/min)

    GB/T 13477.4

    ≥150

     

    350

     

    Recovery rate

    GB/T 13477.6

    >80%

    84

    Tack free time(min)

     

    GB/T 13477.5

     

    ≤60

     

    40

     

    Curing speed (mm/d)

     

    HG/T 4363

     

    ≥1.8

     

    3

    Tear Strength

    GB/T 529

     

    8Mpa

     

    8.3

     

    Shore A-hardness

     

    GB/T 531.1

     

    30~50

    40

    Tensile strength(MPa)

     

    GB/T 528

     

    ≥1.2

     

    1.5

     

    Elongation at break(%)

     

    GB/T 528

     

    ≥400

     

    600

    Operating temperature(℃ )

     

    /

     

    -40~90

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