In the granule cable production, according to the structure. And type of cable used, different protection layers use, but generally all cables insulate and laminate.
Insulation is part of the cable that prevents the flow of electricity.
The hose is made of a material or a combination of different materials. Such as nylon, polyurethane, polyethylene, polyurethane, natural rubber or synthetic rubber based on the environment and pressure required. In recent years, hoses produce from specialty polyethylene compounds (LDPE and especially LLDPE).
In the production of power cables, according to the structure. And type of cable use, different protection layers use, but generally all cables insulate and laminate.
Insulation is part of the cable that prevents conduction of electricity and must meet the following requirements in its production:
- The insulation of the wire should be sufficiently mechanical and elastic.
- The insulation of the wire should be completely conductive wire.
- The insulator must completely attache to the conductor of the wire, but with the exception of high flexible
joints, it is necessary to isolate the insulation from the wire conductor without damaging the conductor insulation or tin coating (if any).
The average insulating thickness of the standard value is not lower.
Also, cable overlays should:
The cable cover should be sufficiently mechanical and resilient.
– The cable cover should not stick to the insulation of the wires.
– The average thickness of the cable shroud is not lower than the standard value.
-Installation on single-conductor cables on insulation.
Used in multi-threaded cables on a string or filler set.
Polymers used for insulation and cable sheathing
PVC or PVC: Polyvinyl chloride the most commonly use insulation, especially in low pressure cables. This insulating material, which commonly use as a granule, consists of four materials of PVC resin, calcium carbonate, plasticizers (usually DOP). And thermal stabilizers (stabilizers) depending on the application and mechanical properties, heat and flexibility. The compositional viscosity and proportion of the percentage of these composite materials in different formulas of PVC granules can be different. This polymer is used as an insulator and cable covering.
XLPE: Networked or cross-linked polyethylene is another suitable insulating material. That most commonly use in medium pressure cables and high pressure cables. Compared to PVC, this polymer has higher insulating properties (higher insulation resistance). Greater durability, higher temperature resistance, abrasion resistance and higher chemical resistance.
The low flexibility of this type of material limits its use, especially for flexible wires.
Rubber: An important application of this type of insulation material is the need for high flexibility for wire and cable. Another important application of this kind of insulation that the cable is expose to high temperatures.
TPR: A mixture of polymers including plastics and rubber that has thermoplastic and elastomeric properties simultaneously. This insulating material, like many tires, has a high resistance to a variety of oils, chemicals, ozone and other environmental factors. These materials have low water absorption properties, excellent electrical properties, high flexibility and good abrasion resistance.
what is material oh hose
The hose is a hollow and flexible tube designed to carry fluids from one location to another. Sometimes the hose is also called a pipe, while the hose is soft and flexible and the tube is tight and firm. The hose is usually cylindrical with a circular cross section. In the design of the hose, several factors, such as the use and performance of the hose, size, pressure, weight, length, chemical compatibility, and several other criteria, are directly and indirectly involved.
In general, PVC hose use in various industries and is one of the most use and most valuable products of the petrochemical industry. The bulk of polyvinyl chloride (PVC) produced in the construction industry is consumed because it has a decent price, while it’s easy to assemble. By adding a plasticizer, this compound is very flexible and a good material for light pipes. PVC has become a common alternative to metal pipes.
Product use explanations
First of all, it is necessary to select the hose according to the need. Because it has different sizes and has been designed to be used in different environments, as mentioned earlier.