What Are Polysulphide Sealants?

Polysulphides are chemical compounds made from chains of sulfur atoms. This refers to a class of polymers, composed of several sulfur atoms and hydrocarbons. 

A polysulphide sealant or adhesive is a resin that provides flexible and chemical-resistant sealing properties. These polysulphide resins are used as construction sealants and have excellent resistance to fuels, saltwater, ozone, and even sunlight. They react completely and perform best in slightly elevated temperatures. They come with a peculiar smell, which is not harmful to the human body. 

Polysulphide adhesives are an ideal choice when it comes to sealing joints. Thanks to their qualities like amazing flexibility and adhesion that are inevitable to seal joints. Let us know in the following section about the properties and application of these adhesives. 

What Are The Properties Of Polysulphide Adhesives

Polysulphide adhesives:

  • Are capable of underwater curing
  • Resistant to chemicals
  • Resistant to shock, impact, vibration, and thermal cycling
  • Contain high dielectric and physical strength
  • Serve both high and low cryogenic temperature
  • Resistant to kerosene, gasoline, crude oils, natural gas, alcohol, and its products.
  • Easy to apply and use, with a low drippage.
  • Provides amazing adhesion to similar and different substrates.
  • Does not contain metal

What Are The Various Applications Of Polysuphide Adhesives

Polysulphide adhesives or sealants are versatile materials that find application in a number of industries. These industries include chemical, computer, appliance, automotive, electrical, electronic, etc. 

The polysulphide adhesives are used in the following:

  • Seal fuel tanks and fuselages of aircraft (aerospace industry)
  • Industrial tank liners
  • Electrical potting
  • Electro-optical devices
  • Sealing the joints and channels in construction
  • As a waterproof seal to prevent leakages in metal equipment
  • Sealing the channels in dams, reservoirs, canals, flood control waterways
  • Making expansion and contraction joints in road sidewalks and floors to prevent form effects of environmental changes.
  • Sealing wooden planks or decking of a boat.

How Are Polysulphide Adhesives Applied

The polysulphide adhesives are applied in the following manner:

  1. At first, the surface is cleaned properly before the adhesive or sealant could be applied to it. If it's a metal or glass surface, it is cleaned using toluene. Toluene is a colorless liquid that comes with a sweet smell and evaporates when exposed to air. 
  1. Then, the adhesives are applied to the surface using a caulking gun. If the surface area is large, the sealants can be poured directly from the container on the surface. 

Conclusion

Check out the polysulphide sealants by IWL India Ltd. We are a leading manufacturer of bitumen-based waterproof membranes and anti-corrosion coating tapes. Our range of pipe wrapping self-adhesive coatings, as well as sealants, have found markets across the world. Get in touch to know more or share your inquiries.

More info: https://iwlindia.com/

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