Hind Sealant PU


pdf

Category: . Tag: .
Description

USES

Hind Sealant PU is used both horizontal & vertical expansion joints in all type of building and civil engineering construction such as:

  • Retaining wall.
  • Doors and Windows.
  • Precast Concrete Element.
  • Underpasses and Tunnels
  • Bridges
  • High and Low Rise building and wherever a permanently flexible seal is required.
  • Submerged Applications.

ADVANTAGES

  • Economical, Ready to use and fast curing.
  • Non-Staining.
  • Excellent adhesion to many substrate.
  • Non-sag in vertical and overhead joints.
  • Movement capacity 25%
  • Good chemical resistance and high tear resistance.
  • Excellent weather resistance

APPLICATION

Surface Preparation: All surfaces must be clean, dry and free oil, grease and loose particles. Correct joint depth can be determined by inserting compressible board tightly into the joint. Protect surface with a masking tape.

Flat, Soft or Round Polyethylene backing material should be used for controlling the depth so that sealant is filled as per the specification.

Priming: In most cases high bond strengths can be obtained without use of primer. Prior to application, adhesion testing is recommended to determine the requirement of primer. Contact our technical division for exact type of primer recommendations.

Application: Preparation of the joint and substrate are to be done at first and then backing rod is inserted into the joint to maintain the required depth.  After making a 1” slit near to the crimp at one end of the sausage pack, it is loaded into the applicator barrel (the slit should be out) . The rounded end of the sausage nozzle is placed onto the slit end of the sausage pack and fitted with a retaining ring. The nozzle is now cut as per desired size and shape and is dispensed  with the nozzle tip in contact with the substrate for proper gap filling. The entire material to be used within 24 hours from the time it is cut off. The bonding of the sealant should occur within the first 50% of the skin time. Hind Sealant PU should not be applied over frozen or wet surfaces. Should not be applied over silicone or hybrid products and every care to be taken so that it does not come into contact with alcohol and solvents during curing. Sealant can be tooled off immediately after application to give the desired appearance.

Joint Design:                                       Minimum joint depth  =   8 mm

Maximum joint width = 30 mm

Approximate Consumption :

Width of Joint 10mm 15mm 20mm 25mm 30mm
Depth of joint 8mm 8mm 10mm 12mm 15mm
Joint length per 600 ml 7.5 – 8.0 m 4.5- 5.0 m 2.5-3.0 m 1.5-1.7m 1.2-1.3m

PROPERTIES

Aspect Grey Colour Paste
Base Single Component Polyurethane
Density 1.3Kg/Ltr at 300 C
Rate of Curing ~ 3mm /24 hours ( > 230 C /50% Relative Humidity)
Tack-Free Time (ASTM C 679) 60 minutes
Movement Accommodation ± 25 % of the width
Sag Flow 0 mm, very good
Tear Strength Minimum 0.3 N./ mm²
Shore “A” Hardness (ASTM C661) 30- 35
Elongation at Break >600%
Full Cure 7 days
Width to Depth ratio Width 2:1 depth.
Temperature Range From 5º C to 80º C
Weather Resistance Excellent

 

SHELF LIFE

12 months from the date of manufacture in unopened condition. Keep in cool and dry place away from direct sunlight between 100 C to 250 C.

PACKING

600 ml & 310 ml  sausages.

HANDLING PRECAUTIONS

Hind Sealant PU is non-toxic. If contact with skin occurs must be cleaned with suitable solvents. If contact with eyes occurs, wash well immediately with water and seek medical advice.

Print Friendly
Reviews (0)

Reviews

There are no reviews yet.

Be the first to review “Hind Sealant PU”

Your email address will not be published. Required fields are marked *