Glass Fiber High Strength Fiberglass GelCoat XPS Core Panel

Product 

1. Technical characteristics of FRP gel-coated sheet and its suitability for cold storage

FRP gel-coated board is made of thermosetting gel-coat, synthetic resin and glass fiber. Its core performance is excellent, with good thermal insulation and thermal conductivity of about 0.23W/M.K; good moisture resistance, the surface FRP panel is impermeable; strong corrosion resistance, excellent chemical stability to the atmosphere, rainwater and acid, alkali and salt media of general concentration. Compared with traditional cold storage panels, it is light in weight, 30-40% less than traditional products, and easy to maintain, with no obvious traces after repair. The cold storage environment has low temperature and high humidity, and may also be exposed to various chemical substances. FRP gel-coated board can meet these special needs well.

2. Core application advantages of FRP gel-coated board in cold storage

1. Principle of achieving excellent thermal insulation performance

The closed-cell polyurethane sandwich structure and FRP composite process greatly inhibit thermal conductivity. The closed-cell structure forms many independent small spaces, effectively preventing heat transfer; the composite process allows various materials to work together to enhance the thermal insulation effect. The material density is about 1.8g/cm³, and the thickness is 1.0 - 4.0mm and can be adjusted as needed. Used in cold storage, it can significantly reduce energy consumption, such as saving about 20% of electricity per year in a small cold storage.

2. Corrosion resistance, moisture resistance and mildew resistance

The gel coat layer is like a solid shield, resisting the erosion of acid and alkali media and condensed water. It is dense and smooth, and it is difficult for acid and alkali substances to adhere and penetrate, and condensed water will also slide off. The surface finish reaches Ra0.8μm and is easy to clean. In places with high requirements for cleanliness such as food processing plants and pharmaceutical cold storage, it can keep the environment in the warehouse clean and reduce mold growth.

3. High strength and structural stability performance

The glass fiber reinforcement layer gives the FRP gel coat board a strong supporting force, which can withstand the load-bearing of cold storage shelves and equipment installation. The compressive strength test shows that it can withstand a pressure of about 2000N per square centimeter. Compared with traditional metal sheets, it is not easy to deform. Traditional metal sheets are prone to dents under heavy pressure, while it can maintain structural stability for a long time.

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Application advantages and characteristics of FRP composite panels in refrigerated car panels

FRP composite panels (FRP composite panels) are lightweight, high-performance materials made of glass fiber reinforced materials and resin matrix. They have been widely used in the field of refrigerated car manufacturing in recent years. Their unique physical and chemical properties make them an ideal choice to replace traditional metal or ordinary composite panels. The specific advantages are as follows:

(1) Dual advantages of lightweight and high strength

The density of FRP composite panels is only 1.5-2.0g/cm³, which is more than 60% lighter than traditional steel panels and can significantly reduce the vehicle's own weight. Through the directional laying design of glass fiber and the curing molding of resin matrix, the tensile strength of the composite board can reach more than 300MPa and has excellent impact resistance. It can still maintain mechanical stability in a low temperature environment of -40°C, avoiding the common low-temperature brittleness problem of metal materials.

2.Excellent thermal insulation performance

The sandwich structure of polyurethane/polystyrene core material has a thermal conductivity as low as 0.022W/(m·K). Compared with ordinary metal compartments, it reduces heat conduction loss by more than 40%. The continuous insulation layer formed by the closed-cell foaming process effectively blocks the cold bridge effect and can reduce the energy consumption of the refrigeration unit by 15%-20%. This is especially important for pharmaceutical cold chain transportation that requires precise temperature control (±2℃).

corrosion resistance and long life characteristics

The dense resin layer on the surface of FRP material can resist the corrosion of salt water, acid and alkali solutions and organic solvents. In a refrigerated environment with a humidity of 95%, the corrosion thickness does not exceed 0.1mm in 10 years, and the service life is more than 15 years. Compared with galvanized steel plates (5-8 years of life), the maintenance frequency of the compartment is greatly reduced, which is particularly suitable for long-distance transportation of corrosive goods such as seafood and dairy products.

(3) Modular design and environmental benefits

The one-step molding process can achieve precise control of the box panel size (tolerance ±1mm), and the assembly efficiency is improved by 30%. The overall sealing of the non-welded structure is better, eliminating air leakage. The material recyclability rate exceeds 85%, and the VOC emissions during the production process are reduced by 60% compared with traditional processes, which complies with the EU REACH environmental protection standards.

The dense resin layer on the surface of the FRP material can resist the erosion of salt water, acid and alkali solutions and organic solvents. In a refrigerated environment with a humidity of 95%, the corrosion thickness does not exceed 0.1mm in 10 years, and the service life is more than 15 years. Compared with galvanized steel plates (5-8 years of life), the maintenance frequency of the box body is greatly reduced, which is particularly suitable for long-distance transportation of corrosive goods such as seafood and dairy products.

4.Modular design and environmental benefits

Through one-step molding through the molding process, the size of the compartment panel can be precisely controlled (tolerance ±1mm), and the assembly efficiency is increased by 30%. The overall sealing of the non-welded structure is better, eliminating air leakage. The material recyclability rate exceeds 85%, and the VOC emissions in the production process are reduced by 60% compared with traditional processes, which meets the EU REACH environmental protection standards.

5 Economic Benefit Analysis

Although the initial cost is 20%-30% higher than that of ordinary steel plates, the overall operating cycle can save about 40% of costs by combining factors such as fuel savings (fuel consumption is reduced by 0.8-1.2L per 100 kilometers), reduced maintenance costs, and extended service life. At present, mainstream cold chain logistics companies such as Sinotrans and SF Cold Transport have fully adopted this material.

In summary, FRP composite panels are promoting the upgrading of refrigerated transportation equipment with their core advantages such as lightweight, strong weather resistance, energy saving and environmental protection. With the innovative application of material surface self-cleaning technology and intelligent temperature control integration technology, it will become an important carrier of the smart cold chain logistics system in the future.

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