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Acrylic sealant (Acrylate Sealant) is a sealing material primarily composed of acrylate polymers. It is formulated using acrylate polymers as the main film-forming substance, combined with additives such as fillers, plasticizers, and pigments.
As a significant polymer material for construction and industry, it boasts excellent weather resistance, light stability, and aging resistance, along with good colorability. It is also eco-friendly and non-toxic, making it widely used for joint sealing and bonding in building doors and windows, interior decoration, and industrial applications.
| Basic Information | |
|---|---|
| Chinese Name | Acrylate Sealant (丙烯酸酯密封胶) |
| English Name | Acrylate Sealant / Acrylic Sealant |
| Product Type | Sealing material, adhesive |
| Application Areas | Architectural decoration, industrial manufacturing, electronic packaging |
The evolution of acrylate sealants spans over a century, transitioning from early synthetic rubber alternatives to advanced eco-friendly and fast-curing formulations:
The development of acrylate sealants originated from synthetic rubber research in the early 20th century. In 1906, the German company Bayer began seeking alternatives to rubber. In 1955, the US company Eastman developed the first generation of acrylate adhesives, pioneering the application of this class of materials; however, early products suffered from high brittleness and insufficient toughness.
In 1975, DuPont invented the second generation of modified acrylate adhesives. By introducing redox systems and graft reactions, the toughness and peel strength of the products were significantly improved, leading to widespread adoption in industrial sectors.
Following 1968, the advancement of light-curing technology led to the emergence of third-generation UV-curing acrylate adhesives, which offered advantages such as rapid curing speeds and environmental friendliness. Meanwhile, the maturation of water-based acrylic emulsion technology drove its widespread adoption in the construction sector. In recent years, as environmental regulations have become increasingly stringent, the development of water-based, solvent-free, and bio-based acrylate sealants has become a key area of focus.
Acrylic sealants for construction are primarily water-emulsion products based on acrylate emulsions, with water serving as the dispersion medium. Key ingredients include:
Industrial acrylate sealants come in a wide variety of types engineered for demanding operational environments:
Acrylate sealants offer distinct performance parameters that make them ideal for specific interior construction and high-efficiency industrial assembly workflows.
| Property | Description & Performance Highlights |
|---|---|
| Weather Resistance | Resistant to UV radiation and oxidation, with excellent aging resistance; suitable for outdoor and indoor use. |
| Adhesion | Demonstrates good adhesion to most construction materials (concrete, masonry, wood) and industrial materials (metals, plastics). |
| Environmental Friendliness | Water-based formulations feature ultra-low VOC content and are non-toxic, meeting strict green building material standards. |
| Paintability | The cured surface can be painted, facilitating seamless architectural finishing and decoration—a significant advantage over silicone sealants. |
| Flexibility | Possesses a certain degree of elasticity and elongation, allowing it to accommodate joint movement (though generally less than silicone or MS sealants). |
China has established specific industry standards for acrylate architectural sealants to regulate product quality, performance classification, and environmental safety:
