Double Components Polysulfide Two Component Polysulfide Silicone Sealant
Double component polysulfide sealants, also known as two-component polysulfide silicone sealants, are a type of sealant commonly used in construction, particularly for sealing joints and gaps in various building applications. They are composed of two separate components, typically a base compound and a curing agent, which are mixed together prior to application. Here is a description of their key characteristics:
1. Composition: Two-component polysulfide sealants are made primarily of a polysulfide polymer as the base compound. This polymer consists of repeating sulfur-containing chains, which provide the sealant with its unique properties.
2. Curing Mechanism: The base compound and the curing agent, often referred to as the accelerator or curing agent B, are mixed together in specific ratios. The curing process starts when the two components combine, initiating a chemical reaction known as cross-linking. This reaction forms a three-dimensional network of sulfur-sulfur bonds, resulting in the formation of a solid rubber-like material.
3. Flexibility: Two-component polysulfide sealants exhibit excellent flexibility even after curing. This flexibility allows the sealant to accommodate movement and expansion of different building materials, such as concrete, metal, glass, and wood. It helps to prevent the sealant from cracking or breaking under stress, ensuring long-term durability.
4. Chemical Resistance: Polysulfide sealants have good resistance to various chemicals, including water, oils, fuels, solvents, and atmospheric pollutants. This chemical resistance makes them suitable for use in environments where exposure to such substances is expected.
5. Excellent Adhesion: Two-component polysulfide sealants have strong adhesion properties, allowing them to bond effectively with a wide range of substrates, including concrete, metal, glass, wood, and many plastics. This strong adhesion creates a reliable seal that prevents air and water infiltration.
6. Weather Resistance: Polysulfide sealants are known for their excellent weather resistance. They can withstand prolonged exposure to ultraviolet (UV) radiation, extreme temperatures, and weathering without significant degradation. This resilience helps maintain the integrity of the sealant and ensures long-lasting performance in outdoor applications.
7. Gas and Moisture Barrier: Polysulfide sealants possess good gas and moisture barrier properties, making them suitable for sealing joints that require protection against moisture vapor transmission and gas penetration.
8. Application: Two-component polysulfide sealants are typically supplied in two separate containers—a base compound and a curing agent. The two components are mixed together thoroughly before application. The sealant can be applied using standard caulking guns or specialized dispensing equipment, depending on the size and complexity of the joint to be sealed.
Specification:
| Color (mixed) | Black | Application Temperature | Apply between 4℃ (40℉) and 40℃ (110℉ |
| Appearance | Lump-free paste | Odor | Alcohol |
| Base | Alcohol Silicone | Tack-Free Time | 80-90 minutes |
| Specific Gravity (component A) | 1.42 | Cure Time | 8-9 hours *Cure time is dependent on
temperature, humidity and
amount of product used |
| Specific Gravity (component B) | 1 | Tensile module MPa (23℃) | 0.8 |
| Shelf Life | 12 months from date of manufacture (unopened) | Hardness, Shore A | 43 |
| Elongation at break | 120% | | |
About Us
Foshan Kingdeli Viscose CO.,LTD was established at 1998 in Guangdong province China. We are a professional sealant & adhesive manufacturer. Hong Ying, as main brand of our company, is a Chinese well-known brand. At the beginning, we just produced silicone sealant and cartridge of silicone sealant. Today, we are a leading manufacturer of sealant, adhesive and HDPE cartridges, with a factory cover 66,000 square meter and 100,000 tone annual production capacity.
With our strong R&D ability and experiences in oversea trading, we provide industrial solution for our oversea customer in the field of sealant and adhesive for construction. Our main produces are silicone sealant, no more nail, acrylic sealant, polyurethane sealant, polyurethane sealant. They are widely used in door, window, mirror, wall, floor, aquarium, bridge, pipe, insulating glass etc.
Kingdeli is commits to quality and service, we control quality is from the raw material, production and before shipment.Our well trained and experience staff are available when you need us to support in term of produce inquiry, shipment, and marketing.
Welcome to contact us for more about our produce and service.
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Flexible Two Component Silicone Sealant , Polysulfide Joint Sealant For Aluminum Images
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