Main technical indexes of FRP cable bracket:
1, size requirements:
The length of the supporting beam is greater than 300mm, the width of the supporting surface is greater than 50mm, and the height of the supporting beam is greater than 50mm.
The length of the supporting beam is less than 300mm, the width of the supporting surface is greater than 40mm, and the height of the supporting beam is greater than 40mm.
The exposed supporting beam length of directly buried support is greater than 300MM, and the fixed length in the wall must be greater than 240MM.
The exposed supporting beam length of directly buried support is 250—300MM, and the fixed length in the wall must be greater than 180MM.
The exposed supporting beam length of directly buried support is less than 250MM, and the fixed length in the wall must be greater than120 mm. ..
2. Bearing capacity:
Directly buried support is more than 250KG.
Bolt bracket over 200KG.
3. oxygen index:? More than 60%, GB/T8927-88.
4. Bending strength: 140, GB 1449-83.
5. Tensile strength: 60, GB 1447-83.
6. Arc resistance: 180, GB 14 1 1-88.
7. Insulation resistance: 1.0 10 13? GB 14 1 1-88 .
Structure and performance
Composite materials made of synthetic resin as binder and glass fiber and its products as reinforcing materials are called glass fiber reinforced plastics. Because of its high strength, it can be compared with steel, so it is also called FRP.
The specific gravity of lightweight high-strength FRP is only 1.4-2.0, that is, it is only 1/4- 1/6 of ordinary steel lattice, which is about 1/3 lighter than aluminum, but its mechanical strength can reach or exceed the level of ordinary carbon steel. For example, the tensile and bending strength of some epoxy resin and unsaturated polyester fiber reinforced plastics exceeds 400 Pa.
Excellent chemical resistance. The electrochemical corrosion mechanism of FRP is different from that of ordinary metals. It is non-conductive and does not dissolve ions in electrolyte solution, so it has good chemical stability to medium with general concentration such as air, water, acid, alkali, salt, etc., especially strong non-oxidizing acid, and has good adaptability to medium with wide PH range. In the past, some media that stainless steel could not aim at, such as hydrochloric acid, chlorine gas, carbon dioxide, dilute sulfuric acid, sodium hypochlorite and sulfur dioxide, can now be well solved with FRP.
This product is formed by glass fiber briquetting. The molding process is reliable, which can meet the requirements of automatic and mechanized production and improve working conditions. This is a new way to produce profiled polyester FRP products with high efficiency. Product size is accurate, surface is smooth, parameters are unified and standardized, and quality is stable.
FRP bracket is a good natural insulator, so it has good performance in laying and fixing cables. The surface of FRP bracket is smooth, which reduces the friction and wear of cable; The FRP bracket is also very corrosion-resistant and bay-resistant, so there is no need to worry that it will be damaged underground or exposed to air, which will lead to cable damage. The service life of FRP bracket is 50 years underground and 25 years above ground, so the use of FRP cable bracket saves a lot of materials and money in cable laying.
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