After long-term use, whether the wear and scratch resistance of UV Primer decreases is the focus of many users. UV Primer is widely used in furniture, electronic product casings and other fields due to its fast curing and high hardness, but in actual use, its performance will be affected by many factors and change.
From the nature of the material, the polymer network formed after UV Primer is cured is not absolutely stable. Although under ideal conditions, its tightly cross-linked molecular structure can resist daily friction, ultraviolet rays, high temperatures, chemicals, etc. will gradually destroy the molecular chain in a complex environment for a long time. For example, the UV Primer coating used outdoors is continuously exposed to ultraviolet rays in the sun, and the residual photoinitiator may cause photoaging reaction, resulting in molecular chain breakage, brittle coating, and natural reduction in wear and scratch resistance. In indoor environments, if UV Primer is in contact with chemical reagents such as alcohol and detergents for a long time, some components will react chemically with them, which will also weaken the density of the coating.
The external force in daily use is the direct cause of the decline in the performance of UV Primer. Although the hardness of the cured UV Primer is high, frequent and high-intensity friction and scratching by sharp objects will still cause damage to it. Take the surface of furniture as an example. If heavy objects are dragged on the table for a long time, even if the surface is protected by UV primer, the coating will have fine scratches. As time goes by, these scratches gradually accumulate, and the protective ability of the coating is weakened, which not only affects the appearance, but also may expose the substrate under the primer and accelerate the damage of the substrate. In addition, when friction objects of different materials come into contact with UV primer, the degree of wear on the coating is also different due to different hardness and roughness.
The quality of the construction process also determines the stability of the long-term performance of UV primer. If the coating thickness is uneven during construction, the too thin area is more likely to be worn through in long-term use; if the UV light intensity or time is insufficient during the curing process, the primer cannot be completely cross-linked, the intermolecular bonding force is weak, and the wear resistance is defective from the beginning. For example, in industrial production, problems such as too fast roller coating speed and failure to replace UV lamps in time due to aging will lead to insufficient curing of UV primer, which will cause the wear and scratch resistance of the product to decline faster after it is put into use.
The impact of environmental factors on UV primer cannot be ignored. High temperature and high humidity environment will accelerate the aging of the coating. When the humidity is high, moisture may penetrate into the coating, causing the polymer chain to hydrolyze and destroy the coating structure; high temperature will soften the coating, reduce the hardness, and increase the risk of scratches. In a cold environment, the toughness of UV primer decreases, becoming more brittle, and it is easy to crack when impacted by external forces. In addition, dust particles in the air will also wear the surface of the coating like sandpaper during daily wiping, affecting its wear resistance over time.
Although there is a risk of performance degradation, reasonable maintenance can effectively delay the decline of UV primer performance. When cleaning regularly, choose a mild detergent and avoid using rough cleaning tools; for areas prone to wear, additional protective measures can be taken, such as laying soft pads on the table. In the product design stage, choose the right type of UV primer according to the usage scenario. For example, outdoor products use a formula with stronger UV resistance, which can also improve its long-term stability.
Some advanced UV primer products have enhanced their anti-aging ability through technical improvements. For example, adding light stabilizers, antioxidants and other additives can effectively inhibit the damage of ultraviolet rays and oxygen to the coating; using nano-composite technology, nano-scale fillers are evenly dispersed in the primer to improve the density and hardness of the coating, making the wear and scratch resistance more durable. However, these new products still have certain limitations in terms of cost and application scope.
After long-term use, the wear and scratch resistance of UV primer will indeed decrease, but the degree of decrease is affected by a variety of factors such as materials, usage methods, environment, and process. Understanding these influencing factors and taking targeted preventive and maintenance measures can extend the effective protection time of UV primer to a certain extent, ensuring that the coated objects maintain good appearance and performance over a long period of time.
