Zhejiang Ruixin Electromechanical Co., Ltd takes you to understand the material characteristics of the meter box

The material of the meter box body is a resin based composite material. The main components of the box are injection molded and pressed from four materials: ABS engineering plastic, polycarbonate transparent PC material, DMC, and SMC. This composite material consists of two parts: the matrix - polyester resin; Reinforced materials (abbreviated as PC or SMC) are also known as transparent PC materials or fiber reinforced polyester materials. Transparent PC material and fiber reinforced unsaturated polyester are composite materials based on unsaturated polyester resin. These two materials have the characteristics of being insoluble, flame retardant, and recyclable, while the latter material has the disadvantage of being non fusible and non recyclable. Its physical structure is a three-dimensional network structure. These four materials have become high-performance engineering materials through functional filler modification and special fiber reinforcement. Next, the manufacturer of Zhejiang Ruixin Electromechanical Co., Ltd's meter box will take you to understand the material characteristics of the meter box.

Material characteristics of the meter box:

1. Good electrical performance

Fiber reinforced polyester materials used in the manufacturing of electrical products have the following electrical properties:

Insulation resistance (immersed in water for 24 hours): 1.0x10 M Ω

Arc resistance: 180s

Leakage resistance index: ≥ 600v

The insulation protection and anti creepage indicators comply with relevant DIN/VDE standards. This material not only has excellent electrical insulation, but also maintains good dielectric properties at high frequencies, free from electromagnetic effects and reflecting electromagnetic waves. These properties are far beyond the comparison of metallic materials.

2. Chemical resistance

Fiber reinforced polyester materials have excellent corrosion resistance to acids, dilute alkalis, salts, organic solvents, seawater, and other corrosive properties, while metal materials are not resistant to acid or seawater corrosion.

3. Lightweight and high-strength

Specific strength and specific modulus are one of the indicators to measure the load-bearing capacity of materials. Fiber reinforced polyester materials have a specific modulus comparable to steel, but their specific strength can reach four times that of steel.

4. Good fatigue resistance

The tensile strength of fiber reinforced polyester material is slightly better than that of steel. The Fatigue limit of steel and most metal materials is 40% -50% of their tensile strength, while the Fatigue limit of fiber reinforced composites is generally higher than this value, with the highest reaching 70% -80%.

5. Gap sensitivity

When the component is overloaded and a few fibers break, the load is quickly distributed on the unbroken fibers to reach Mechanical equilibrium again. This is incomparable to metal components.

6. Low thermal conductivity and low expansion coefficient

The thermal stress generated when there is a temperature difference is much smaller than that of metals.

7. Excellent UV resistance and aging resistance

Among non-metallic materials, fiber reinforced polyester materials have excellent anti-aging properties. The anti-aging performance test shows that the maximum aging thickness of the surface is less than 50 years for different places of use and different climatic zones μ M. The minimum thickness of most boxes is 5mm, which is less than 1% of the box thickness, so it has no significant impact on the mechanical performance of the box. The company has adopted a special UV resistant surface treatment process to further enhance its aging resistance.

8. Long service life

The usage history in Europe can prove that its service life is at least 20 years or more; After simulated aging tests, it has been shown that its service life is over 20 years, far exceeding that of metals and other materials