This is a practical guide to Surface Science for researchers working in the Shipbuilding Industry.
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The shipbuilding industry encompasses both the engineering behind ship development and the industrial sectors responsible for completing and repairing ships. This complex field involves various sectors, including the construction of vessels for commercial shipping, naval defense, and recreational boating. Surface properties such as contact angle, sliding angle, surface tension, and surface energy are crucial for ensuring ships’ integrity, performance, and longevity.
We use the following surface properties to understand the behavior of Shipbuilding products and improve their quality.
Sample Image taken from Droplet Lab Tensiometer.
Joven – Método Laplace
Método polinómico
Ideally, when we place a drop on a solid surface, a unique angle exists between the liquid and the solid surface. We can calculate the value of this ideal contact angle (the so-called Young’s contact angle) using Young’s equation. In practice, due to surface geometry, roughness, heterogeneity, contamination, and deformation, the contact angle value on a surface is not necessarily a single consistent value but rather falls within a range. The upper and lower limits of this range are known as the advancing and receding contact angles, respectively. The values of advancing and receding contact angles for a solid surface are highly sensitive to many parameters, such as temperature, humidity, homogeneity, and minor contamination of the surface and liquid. For example, the advancing and receding contact angles of a surface can differ at different locations.
Las superficies y los recubrimientos prácticos muestran naturalmente histéresis de ángulo de contacto, lo que indica un rango de valores de equilibrio. Cuando medimos ángulos de contacto estáticos, obtenemos un solo valor dentro de este rango. Confiar únicamente en mediciones estáticas plantea problemas, como una repetibilidad deficiente y una evaluación incompleta de la superficie con respecto a la adherencia, la limpieza, la rugosidad y la homogeneidad.
In practical applications, we need to understand how easily a liquid spreads (advancing angle) and how easily it is removed (receding angle), such as in painting and cleaning. Measuring advancing and receding angles offers a holistic view of liquid-solid interaction, unlike static measurements, which yield an arbitrary value within the range.
Esta información es crucial para las superficies del mundo real con variaciones, rugosidad y dinámica, lo que ayuda a industrias como la cosmética, la ciencia de los materiales y la biotecnología a diseñar superficies efectivas y optimizar los procesos.
Aprenda cómo se realiza la medición del ángulo de contacto en nuestro tensiómetro
Para una comprensión más completa de la medición del ángulo de contacto, lea nuestra medición del ángulo de contacto: la guía definitiva
These reference measurements show how deionized water wets four standard substrates measured with the Droplet Lab Dropometer. Use them as visual and numerical benchmarks when you're checking your own sample preparation, treatments, and chemistry.
Full contact angle and surface energy datasets (including additional liquids and statistics) are available on our dataset hub.
The droplet images above are taken from the same benchmark series as our open dataset. For each substrate and probe liquid we report:
● Advancing and receding contact angles (and hysteresis)
● Derived surface energy (SFE) values based on multi-liquid measurements
● Measurement conditions, uncertainties, and sample preparation details
Comparing your own droplet shapes and angles against these references is a fast way to spot contamination, treatment drift, or unexpected changes in wettability.
Esta propiedad mide la fuerza que actúa sobre la superficie de un líquido, con el objetivo de minimizar su superficie.
Sample Image taken from Droplet Lab Tensiometer
Tensión superficial dinámica
La tensión superficial dinámica difiere de la tensión superficial estática, que se refiere a la energía superficial por unidad de área (o fuerza que actúa por unidad de longitud a lo largo del borde de una superficie líquida).
La tensión superficial estática caracteriza el estado de equilibrio de la interfaz líquida, mientras que la tensión superficial dinámica explica la cinética de los cambios en la interfaz. Estos cambios podrían implicar la presencia de tensioactivos, aditivos o variaciones en la temperatura, la presión y la composición en la interfaz.
Cuándo utilizar la medición dinámica de la tensión superficial
Dynamic surface tension is essential for processes that involve rapid changes at the liquid-gas or liquid-liquid interface, such as droplet and bubble formation, coalescence (change in surface area), the behavior of foams, and the drying of paints (change in composition, e.g., evaporation of solvent). It is measured by analyzing the shape of a hanging droplet over time.
La tensión superficial dinámica se aplica a diversas industrias, incluidas las cosméticas, los recubrimientos, los productos farmacéuticos, la pintura, los alimentos y las bebidas, y los procesos industriales, donde la comprensión y el control del comportamiento de las interfaces líquidas son esenciales para la calidad del producto y la eficiencia del proceso.
Aprenda cómo se realiza la medición de la tensión superficial en nuestro tensiómetro
Para una comprensión más completa de la medición de la energía superficial, lea nuestra medición de la tensión superficial: la guía definitiva
Sample Image taken from Droplet Lab Tensiometer
Aprenda cómo se realiza la medición de la energía superficial en nuestro tensiómetro
Para una comprensión más completa de la medición de la energía superficial, lea nuestra medición de la energía superficial: la guía definitiva
For benchmark contact angle and surface energy values on glass, nylon, PMMA, and Teflon, see the Open Benchmark Data panel above or visit our Dataset Hub for full CSV downloads.
El ángulo de deslizamiento mide el ángulo en el que una película líquida se desliza sobre una superficie sólida. Se emplea comúnmente para evaluar la resistencia al deslizamiento de una superficie.
Sample Image taken from Droplet Lab Tensiometer
Aprenda cómo se realiza la medición del ángulo de deslizamiento en nuestro tensiómetro
Para una comprensión más completa de la medición del ángulo de deslizamiento, lea nuestra medición del ángulo de deslizamiento: la guía definitiva
Within the Shipbuilding industry, several case studies exemplify the advantages of conducting surface property measurements.
Challenge: A ship painting company faced uneven surface coatings due to the coating fluid's viscosity, surface tension, and the substrate's contact angle.
Solution: The company’s engineering team discovered that using a coating liquid with a contact angle less than 90° caused a pinning effect, reducing surface unevenness. By adjusting the contact angle to create this effect, they mitigated the impact of uneven coatings, leveraging the interplay between fluid viscosity and the substrate's surface energy.
Challenge: The superhydrophobic coatings used in shipbuilding were expensive and complicated to fabricate.
Solution: Researchers developed cost-effective, mechanically stable micro/nano superhydrophobic coatings by combining laser processing with low-surface energy materials. These coatings, exhibiting excellent hydrophobicity through contact angle and sliding angle measurements, provided durable water repellency, simplifying the superhydrophobic coating process.
Challenge: Cargo shipping companies needed to reduce fuel consumption and emissions.
Solution: Companies adopted innovative hull coatings with low surface energy and sliding angles to minimize friction with seawater. By enhancing hydrodynamic efficiency, these coatings led to significant fuel savings, reduced operational costs, and a lower carbon footprint. Droplet Lab's portable instrument can enable accurate measurement of surface energy and sliding angles, ensuring these coatings' effectiveness in real maritime conditions.
Challenge: Aluminum 7075, despite its high strength, suffered from corrosion, limiting its use in subsea industries.
Solution: The research team experimented with bare aluminum and oil-impregnated anodic aluminum oxide (AAO) surfaces. Salt spray and pressure tests revealed that the oil-impregnated AAO maintained a high contact angle, significantly improving corrosion resistance. This modification made Aluminum 7075 viable for subsea applications.
Challenge: Slippery deck surfaces posed safety concerns.
Solution: To enhance deck surface hydrophobicity, engineers performed contact angle measurements on various surface treatments. Optimizing these treatments increased hydrophobicity, reducing slip risks in wet conditions and improving safety.
Si está interesado en implementar estas u otras aplicaciones, póngase en contacto con nosotros.
In an industry where precision reigns supreme, how can Shipbuilding manufacturers ensure their products withstand scrutiny? The answer lies in standards and guidelines: the compass that guides them through the complex maze of quality and performance.
A destructive coating-adhesion outcome test: you cut through the cured coating to the substrate, apply pressure-sensitive tape, remove it, and classify how much coating detaches. For a more actionable shipyard workflow, pair D3359 with an upstream wettability gate (e.g., water contact angle at a fixed timestamp and optional surface free energy trend) to detect surface-prep drift before coating.
Use D3359 to confirm the coating system meets the project’s required adhesion class after cure on representative panels/areas.
Use D3359 when ratings trend down, and use contact angle/SFE trending to quickly triage whether the likely issue is surface readiness (cleaning/treatment/contamination) vs coating/cure changes.
D3359 remains the adhesion outcome test; contact angle/SFE are surface-sensitive indicators that help you catch risk early and diagnose drift, but they do not “guarantee” adhesion. Any numeric wettability gates must be calibrated to your specific substrate + pretreatment + coating system by correlating to D3359 outcomes.
We hope this guide showed you how to apply surface science in the Shipbuilding industry.
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