Evaluation of Thermal Insulation Coatings for Container Houses

Thermal insulation coatings for container houses can effectively enhance thermal insulation performance, reduce energy consumption, and improve living experience. Here is a detailed evaluation:

Thermal Insulation Materials and Structures
The thermal insulation performance of container houses primarily relies on composite wall structures. For example, the outer layer uses anti-corrosion color-coated steel sheets to reflect sunlight, the middle layer is filled with over 50mm of polyurethane foam to block heat conduction, and the inner layer is paired with fire-resistant gypsum boards and moisture-proof membranes, forming a multi-layer temperature control system. Some high-end products use rock wool + extruded polystyrene board double-layer composite walls, combined with thermal break aluminum doors and windows, which can control the indoor-outdoor temperature difference within 8-10℃, achieving warmth in winter and coolness in summer. Additionally, new refrigeration coatings can be directly applied to building surfaces or materials such as glass and metal, reducing energy consumption by reflecting heat and dissipating heat outward without the need for electricity. Tests have shown that these coatings can lower the surface temperature of objects by over 20℃.

Thermal Insulation Effects and Measured Data

• Temperature Delay Response: Container house walls that meet national standards have a heat transfer coefficient of ≤0.45W/(㎡·K), with an insulation efficiency 1.8 times that of traditional brick-and-mortar walls. In summer, the cabin warms up 22 minutes slower than the outdoors at noon, and in winter, the indoor temperature only drops by 1.3℃ after being closed for 8 hours, providing a more stable feel.
• Scenario Application Verification: After applying the new coating in the Hainan storage tank project, the surface temperature dropped by over 20℃; the double-layer container café in Moganshan used sandwich panels with aluminum foil reflective layers, combined with sunshade canopies and ventilation slots, allowing the interior to remain comfortable without air conditioning in the afternoon.

Technical Optimization and Innovation

• Structural Improvements: By increasing the roof height and optimizing the splicing method (such as a 'T' layout), the heat dissipation space is expanded. Combining structural insulation panels (SIPs) or autoclaved aerated concrete (AAC) blocks enhances thermal insulation efficiency.
• Material Upgrades: Using energy-saving materials such as recycled steel and insulation boards, or integrating systems like vacuum water-saving and smart air purification, achieves 'internal greenness'.

Market Selection Recommendations

• High-end Demands: Prioritize brands with international certifications (such as CE, FCC) and full-process service capabilities, such as those offering 'space capsule' homestay products. Their composite walls and smart control systems can meet the high standards of cultural and tourism projects.
• Cost-effective Demands: Focus on established domestic companies with product lines covering standard containers to custom villas, offering wide market coverage and strong price competitiveness. However, it is essential to verify hard indicators such as steel thickness and fire resistance ratings.
• Extreme Environment Demands: For northern regions, it is recommended to choose brands specializing in seismic and thermal insulation technology research and development. Their container connection technologies and composite walls perform excellently under severe cold conditions.