Silicone Sealants
Molecular Structure: Primarily derived from siloxane monomers, silicone sealants are characterized by a repeating Si-O backbone.
Properties:
Thermal Stability: Exceptional temperature resistance, functioning well across a wide range (from -50°C to 150°C).
Weather Resistance: Highly resistant to ultraviolet (UV) radiation, ozone, and external environmental conditions.
Flexibility: Excellent elastic recovery, allowing for movement and flexibility in structures.
Adhesion: Bonds well to a variety of substrates, including glass, metal, and certain plastics.
Chemical Resistance: Resistant to moisture, mildew, and many chemicals.
Applications: Used in a wide range of construction and industrial applications, such as glazing, window and door perimeters, and other building joints.
Frame Sealants (Acrylic/Polyurethane Based)
Molecular Structure: Typically derived from acrylic or polyurethane polymers.
Properties:
Paintability: Acrylic-based frame sealants can be painted over, allowing for a seamless blend with adjacent surfaces.
Durability: Polyurethane offers higher durability and strength compared to acrylic.
Adhesion: Both offer good adhesion, but polyurethane has a broader substrate range.
Shrinkage: Acrylic sealants may shrink more upon curing than polyurethanes.
Weathering: Polyurethane sealants generally offer better weather resistance than acrylics.
Applications: Specifically designed for sealing window and door frames, and other joinery applications. They are also used in gap-filling, internal skirting, and areas where paintability is required
