What additives are used to improve the scratch resistance of plastic products?

2025,11,25

Plastic products are prone to scratches, affecting their appearance and performance. To improve the scratch resistance of plastics, specialized additives are usually added. Here are some common anti-scratch additives:

Silicone oil and silane coupling agents: Silicone oil acts as an external lubricant, reducing the coefficient of friction on the plastic surface, making it less prone to scratches during frictional contact. Silane coupling agents improve the hydrolysis resistance and chemical corrosion resistance of polymer materials, while also enhancing their scratch resistance.

Nanofillers: Nanoscale fillers such as nano-silica, nano-alumina, and nano-zinc oxide can significantly improve the hardness and wear resistance of plastic materials, thereby improving their scratch resistance.

Polymer modifiers: Some polymer modifiers, such as elastomers, thermoplastic elastomers (TPE), and thermoplastic polyurethane (TPU), can significantly improve scratch resistance when mixed with the plastic substrate.

Surface coatings: Applying special coating materials, such as fluoropolymers and polyurethane coatings, can form a protective layer, preventing direct contact and scratching of the base material. Scratch-resistant additives: There are also specially designed scratch-resistant additives on the market. They disperse evenly in plastics and provide durable scratch resistance.

However, it is important to note that the selection of additives requires consideration of multiple factors, including the type of plastic, the compatibility of the additives, and the application requirements of the final product. Furthermore, the amount of additive added needs to be properly controlled to ensure the overall performance of the plastic product.

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