Glass steel cable support is a thermosetting composite heat, is a kind of SMC paste made of resin impregnated glass fiber, it has high strength, light weight, corrosion resistance, electrical insulation and other characteristics, performance and design freedom, convenient processing, is one of the world's most widely used composite materials these advantages, just meet the requirements of cable support technology. The utility model is an ideal material for producing a cable bracket, and the cable bracket made of glass fiber reinforced plastic has the advantages of high strength, good toughness, corrosion resistance, high insulation property, good flame retardancy, aging resistance and long service life
1. high strength, good design
Continuous fiber reinforced thermosetting composites mainly consist of reinforcing glass fibers and thermosetting resins that act as cohesive agents and carry loads. The tensile strength of glass fiber is very high (3450mpa), and its content, length and laying form determine the strength of the bracket. Thermosetting glass fiber reinforced composites can be strength in the 30-1000mpa range. Therefore, according to the force, yield, production process and price bearing capacity of the product, we design the dosage, length and laying form of the glass fiber.
2. no creep
The stiffness of the continuous fiber reinforced thermosetting composite scaffold is doubled compared with the fiber reinforced nylon support produced by an American company. Even under long-term load, it will not deform, and there will be no downward inclination of the metal cable bracket used in the subway in some cities in china.
3. fire prevention
Oxygen index is an important means to evaluate the cable ignition products. Oxygen index refers to the maximum oxygen conditions, fire products burning resistance characteristics. In engineering, the use shall be based on the strength of the combustion. For example, under the condition of 30 cables, if a cable ignition accident occurs, a high temperature heat accumulation of more than 500 degrees can be formed within 4min, thus causing the cable to be ignited along the direction. The greater the cable density, the greater the mass of the combustible material. In 30 cables, fuel per unit length of body mass as 20.5kg/m, now calculated by 300 cables, fuel per unit length of body mass of 158kg/m, calculated according to the maximum possible intensity of combustion, the oxygen index or less than 65%. We believe that the product fire standard, oxygen index set at 70% is more appropriate.
According to the requirement, the oxygen index of composite cable scaffold developed is larger than or equal to 70%. Comply with fire, smoke, halogen free, non-toxic safety requirements. The fire performance is higher than the technical specification for Taiwan Metro glass fibre plastic cable trough (oxygen index 52%), which is much higher than that of an American company's reinforced thermoplastic stent. This target is no less than the target of composite fireproofing standards for new vehicles used by the British BS certified Hongkong metro.
4. corrosion resistance
Continuous fiber reinforced thermosetting composites stand against corrosion and are especially suitable for use in humid, salt, fog, acid and weak base environments.
5. electrical insulation
Insulation performance can be adjusted according to use requirement.
A) electrically insulated type with an insulation resistance greater than 1000G;
B) antistatic, with a surface resistance of less than 10G.
6. easy to use
The utility model has the advantages of good insulation performance and no need of grounding, and can reduce the workload of installation work.
7., the material of the bracket has no recycling value, so it can stop the occurrence of theft.
8., long service life: 50 years at the backlight, see the light for 20 years;