As a common space-dividing and decorative element in modern homes, the surface treatment process of double sliding doors directly affects their scratch resistance and lifespan. Among various processes, UV coating, fluorocarbon spraying, ceramic electrophoresis, and micro-arc oxidation are key technologies for improving the wear resistance of double sliding door surfaces due to their material properties and process advantages.
UV coating uses ultraviolet curing technology to form a high-density cross-linked structure on the surface of double sliding doors. This process uses acrylic resins as a base material; after UV irradiation, a dense network structure forms between the coating molecules, giving the surface a mirror-like gloss and significantly improving scratch resistance. The principle is that the hardness of the cross-linked structure can reach 3H or higher, far exceeding the 1-2H of ordinary coatings, effectively resisting daily friction from keys, furniture handling, etc. At the same time, UV coatings have strong adhesion to aluminum substrates and are not easily peeled off due to temperature changes or humidity fluctuations, making them particularly suitable for high-frequency use scenarios such as kitchens and balconies.
Fluorocarbon spraying uses polytetrafluoroethylene (PTFE) as the core component. Through multi-layer spraying and high-temperature curing, a diamond-like protective layer is constructed on the surface of double sliding doors. Fluorine atoms in fluorocarbon resin molecules form strong polar bonds, giving the coating extremely low surface energy, making it difficult for stains and scratches to adhere. Experiments show that the coefficient of friction of fluorocarbon coatings is 60% lower than that of ordinary coatings; even when in contact with hard objects, only slight marks are left, which are easily wiped clean and repaired. Furthermore, its excellent weather resistance allows it to withstand long-term environmental erosion such as ultraviolet radiation and acid rain, maintaining stable surface color, making it an ideal choice for double sliding doors in coastal or highly polluted areas.
Ceramic electrophoresis, through electrolytic deposition technology, generates a ceramic-textured oxide film on the aluminum surface. This process combines the advantages of anodizing and ceramic coatings, achieving an oxide film thickness of 20-30 micrometers and a hardness exceeding HV600, approaching the wear resistance level of ceramics. Its unique feature lies in the porous structure of the oxide film, which can adsorb special ceramic powder. After high-temperature sintering, a dense composite layer is formed, retaining the lightweight characteristics of aluminum while significantly improving impact and scratch resistance. In practical use, ceramic electrophoresis double sliding doors can resist direct scratches from metal tools, and the surface is not prone to fingerprints or oil stains, making cleaning and maintenance convenient. Micro-arc oxidation, an emerging technology, forms a ceramic oxide film on the surface of aluminum using a high-voltage electric field. Unlike traditional anodizing, micro-arc oxidation allows film growth at room temperature, resulting in a film containing over 30% α-Al₂O₃ phase (corundum) and achieving a hardness of HV1200-1500, far exceeding the HV400-600 of ordinary oxide films. This ceramic-like film not only exhibits strong wear resistance but also effectively isolates the aluminum from the external environment, preventing oxidation and corrosion. For double sliding doors requiring ultimate durability, micro-arc oxidation offers up to 20 years of scratch resistance, making it particularly suitable for high-frequency use in commercial spaces or public areas.
From the perspective of process cost and applicability, UV coating is the preferred choice in the mid-range market due to its low equipment investment and high production efficiency; fluorocarbon spraying, although more expensive, offers balanced overall performance and is suitable for high-end residences and engineering projects; ceramic electrophoresis, with its unique ceramic texture, has secured a place in light luxury design; and micro-arc oxidation, due to its high technical threshold, is mostly used in special scenarios with stringent durability requirements. Consumers can choose the most suitable surface treatment process based on their budget, usage environment, and style needs.
The improved scratch resistance of double sliding doors is essentially a fusion of materials science and surface engineering technology. Whether it's the cross-linking reinforcement of UV coatings, the low surface energy design of fluorocarbon spraying, the ceramic composite structure of ceramic electrophoresis, or the phase transformation hardening of micro-arc oxidation, all achieve breakthroughs in wear resistance from the microscopic to the macroscopic level by optimizing the coating molecular structure or film phase composition. When choosing a process, it is necessary to comprehensively consider the scratch resistance level, weather resistance, environmental friendliness, and cost to achieve the best balance between performance and economy.
