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Primers and adhesion promoters are critical chemicals used in a variety of applications to enhance the bond strength between different surfaces. Chlorinated and non-chlorinated polyolefin primers and adhesion promoters are two significant examples that excel in improving adhesion properties. Chlorinated polyolefin, also referred to as CPOs, are a group of primers and adhesion promoters that are chemically modified to improve adhesion between the substrate and coating materials. The polyolefin backbone of these primers and adhesion promoters is treated with chlorine, which alters its chemical structure and attributes, resulting in an enhanced adhesion effect. Contrarily, non-chlorinated polyolefin do not undergo chlorination. Despite this, they exhibit strong adhesive properties due to the inherent chemical structure of polyolefins. They offer a practical alternative to CPOs when there might be concerns about the release of chlorine during the application process or due to environmental considerations.
Fig. 1. Structures of non-chlorinated polyolefin: polyethylene and polypropylene.
The addition of chlorine to the polyolefin structure significantly changes its properties. The chlorinated polyolefins possess enhanced adhesion qualities when applied to surfaces due to the presence of chlorine. The chlorine atoms in the structure provide excellent wetting and adhesion characteristics, especially to non-polar or low-energy surfaces. These products also show good resistance to heat, chemicals, and UV radiation, making them apt for various applications. Although they lack chlorine, properties of non-chlorinated polyolefin in terms of adhesion is not significantly diminished. Since these products do not contain chlorine, they are an environmentally friendlier option compared to CPOs, and are highly effective for specific substrates. Additionally, they deliver good resistance to heat and chemicals, making them a compelling choice in numerous industries.
Both chlorinated and non-chlorinated polyolefin find numerous applications across different industries, owing to their adhesive properties. These primers and adhesion promoters are extensively used in the coatings, paint, ink, and sealants to enhance their adhesion to different substrates, particularly polypropylene (PP) and thermoplastic olefin (TPO) substrates, and then further applied to all walks of life, for instances:
Automotive
They are instrumental in the automotive industry, where they are used in the coating process of car parts to provide better paint adhesion and improve the corrosion resistance of these parts.
Packaging
Additionally, they also find applications in the packaging industry to increase the bonding strength between various layers of the packaging materials and ensure the longevity and reliability of the packaged product.
Construction
As for the construction industry, these are incorporated into architectural coatings and sealants. They ensure that coatings firmly stick to the surfaces, thus providing a stable and durable finish and ensuring structural integrity.
Electronics
Chlorinated and non-chlorinated polyolefin are also used for electronic components and devices, ensuring the proper bonding and stability of circuits and other components.
Aeronautical
The aeronautical sector also sees a significant utilization of chlorinated and non-chlorinated polyolefin primers and adhesion promoters. They are used in aircrafts' interior components, exterior surfaces, and various other parts requiring adhesives or sealants.
Alfa Chemistry offers a wide range of chlorinated and non-chlorinated polyolefin primers and adhesion promoters. Their superior adherence properties and broad compatibility with different substances contribute to their vast applications. By selecting the suitable type and amount of chlorinated and non-chlorinated polyolefin, customers can optimize the performance of their adhesives, coatings, and sealants. In addition, we also provide customization options based on customer requirements. If you are interested in our products or have any questions, please do not hesitate to reach out to us. We are here to offer support and services to meet your needs.
