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The mar and scratch resistance will be improved primarily in two ways by colloidal silica: Increasing the cross-linking density of reactive groups in organic resins due to the abundance of hydroxyl surface groups.
The film’s build density and resistance will be affected by those, improving. Mar resistance is a term used to describe a coating’s capacity to tolerate harm caused by minor abrasion.
Mar is also a term used to describe a specific kind of physical damage to coatings that only affects the very top few micrometers of the coated surface.
The Europe Anti-Mar additives Market accounted for $XX Billion in 2023 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2024 to 2030.
High throughput techniques are helping in the analysis of the additive impact on qualities such as friction coefficients, mar and abrasion resistance, hardness, surface flaws, and clarity.
The application of slip/mar additives has been a recent topic of interest. Silicone-based additives are frequently employed in coatings to manage interfacial qualities, which have an impact on everything from manufacture to application and final film attributes.
Silicone additives are frequently used to regulate process and application foam, substrate wetting, and slide qualities in the industrial wood coatings industry.
As they affect appearance, feel, and durability, slip, mar, and scratch resistance are crucial performance factors of a wood coating. Despite the fact that silicone additives are most suited to manage slip, mar, and scratch qualities, a variety of silicone chemistries and compositions can still be employed for this purpose.
They used high throughput technologies in this inquiry because they wanted to assess these additives in depth. This made it possible to evaluate a wider range of samples, use levels, and formulations than was possible with conventional benchtop procedures.
In order to assess silicone slip and mar additives in wood coating formulations, they made use of both already-established high throughput test methods and newly created procedures.
Numerous elements, such as the coefficient of friction, hardness, and toughness, have an impact on the mar resistance of coatings. Because they experience less tensile stress along the surface and a smaller yield zone when subjected to the same normal force, coatings with lower friction coefficients exhibit superior mar resistance.
7 Slip-aids made of silicone can lower the coefficient of friction, improving mar resistance as a result. The critical load for mar resistance is defined as the lowest load that can mar the coated surface. The same apparatus was used to assess scratch resistance of coatings, however the critical load for scratch resistance was calculated using the lowest stress required for film breakthrough to the substrate.
