What You Should Know About: Adhesives, Fillers and Sealants
MS Polymer Sealant is recommended for construction applications such as sealing concrete joints, window perimeter, aluminium composite panel, natural stone etc..
Great UV Stablility
The benefits are 100% UV stable. Sealant applied to building exteriors are subjected to rigorous weather conditions which will cause damage to its physical state leading to the loss of it’s designed functionalities.
Compared with Polyurethane sealant, MS polymer sealant has a much better Uv resistance for achieving longer service life.
When the sealant is applied, it is exposed to moisture (H2O) from the ambient environment as well as its adjacent substrates.
Polyurethane contains a chemical called ‘Isocynate’which upon reaction with moisture, release carbon dioxide (CO2)
The carbon dioxide molecule, in turn, forms bubbles and voids in the sealant bead which can also cause as uneven sealant surface.
Over time, the voids in the sealant bead may cause cohesive failure
Since MS Polymer does not contain Isocyanate, there will be no bubbling issue.
Damp Substrate Bonding
Without Isocyanate, MS Polymer sealant can, therefore, be applied to damp substrates which are prohibited with polyurethane sealant.
This feature allows the application of sealant even after rain thus giving your project a greater flexiblity.
Most silicone sealants contain non-reactive ‘silicone oil’ that will migrate into or onto adjacent substrates, causing stains
Ms polymer sealant does not contain silicone oil, therefore, there is no substrate issue caused by silicone oil migration
Less Fluid Streaking
As non-reactive silicone oil migrates onto its surface, more air dust particles will adhere to it.
After a sustained period of wash-up by rainwater, ‘Fluid streaking’ or ‘bleeding’ will appear on the building facade
In the absence of silicone oil, such aesthetic issue will be minimal with MS Polymer Sealant
MS Polymer sealant is paintable with most water-based paints for colour matching purposes a useful feature which is not feasible with silicone sealant
Meets ISO 11600 and ASTM C920 joint sealant standards with +-50% movement capability (ASTM C719) and its complaint to low SCAQMD rule 1168 standard
Many polyurethane sealants contain solvents that evaporated during the curing process, causing sealant shrinkage.
MS Polymer sealant is totally free of solvent and water, hence no shrinkage.