Materials for Mobile Toilets
Common materials for mobile toilets include metal materials, plastic/composite materials, wooden materials, and other materials, as detailed below:
Among metal materials, aluminum alloy is the mainstream choice for the framework and skeleton of mobile toilets. It is lightweight and highly corrosion-resistant, with its surface capable of undergoing oxidation treatment or fluorocarbon spraying for excellent rust prevention. Additionally, it is easy to process and shape, with typical applications weighing between 3 - 5kg/m². Stainless steel is primarily used for hardware components inside the toilet, such as water tanks, water pipes, door hinges, and some exterior finishes. It offers extremely high corrosion resistance, making it suitable for coastal areas, high-humidity environments, or chemically corrosive settings. However, it comes at a higher cost, approximately 1.5 - 2 times that of aluminum alloy, and is more challenging to process.
Regarding plastic/composite materials, PVC panels are commonly used for internal partitions, wall panels, and ceiling panels in mobile toilets. They are waterproof, moisture-proof, and easy to clean, with the ability to have patterns printed on their surface. With a density of about 1.4 - 1.6g/cm³, they are lightweight and cost-effective, costing around 50 - 150 yuan per square meter. However, it is essential to choose products that meet environmental standards. Fiberglass-reinforced plastic (FRP), composed of resin and glass fibers, is used for the outer shell or overall structure of mobile toilets. It has a strength close to that of steel, weighs only 1/4 - 1/3 of steel, and is corrosion-resistant and aging-resistant. However, its surface is prone to scratches, and repair costs are high.
Among wooden materials, pressure-treated anti-corrosion wood can be used for interior decoration or external framework of mobile toilets. It has a natural texture and is easy to process. However, it requires regular application of anti-corrosion coatings and may deform in high-humidity environments. It is generally used in scenic spots, homestays, and other settings where aesthetics are highly valued and is not recommended as a structural material. Ecological wood, composed of wood powder and plastic, combines the appearance of wood with the durability of plastic. It offers better waterproof and insect-resistant properties than natural wood but has poorer heat resistance and costs about 1.2 - 1.5 times that of anti-corrosion wood.
Other materials include rock wool sandwich panels, used for ceiling panels or partition walls in mobile toilets. Filled with rock wool inside, they effectively provide sound insulation and thermal insulation, with a fire rating of Class A, making them suitable for crowded areas. High-density polyethylene (HDPE) panels have high strength, impact resistance, and UV resistance, commonly used for the bottom and exterior decoration of mobile toilets. Galvanized steel structures offer a solid and stable overall structure, while reinforced concrete is used for the floor foundation of some mobile toilets.
