Abstract
The traditional production process of a cable trunk is plastic extrusion with PVC or other halogen containing materials. However, they have many disadvantages such as easy burning, producing toxic gases and smokes. A low smoke zero halogen (LSZH) cable trunk was designed and developed in the present study and the injection molding process was adopted to produce the LSZH cable trunk. Numerical simulations were applied to investigate the effects of the important process parameters on the warpage of the cable trunk. Comparing the simulation results under different process conditions and consideration both of the volumetric shrinkage and the total warpage displacement, it is found that the process parameters, including mold temperature 75°C, melt temperature 265°C, injection pressure 190 MPa, packing pressure 152 MPa, cooling water temperature 50°C and injection time 3 s, are the optimal process conditions for the injection molding process of the new designed cable trunk.
Highlights
A cable trunking system is defined as a system of enclosures consisting of slotted trunking lengths and other appropriate system components intended for the accommodation and, where necessary, for the segregation of conductors, insulated cables or cords in a cabinet
Comparing the simulation results under different process conditions and consideration both of the volumetric shrinkage and the total warpage displacement, it is found that the process parameters, including mold temperature 75°C, melt temperature 265°C, injection pressure 190 MPa, packing pressure 152 MPa, cooling water temperature 50°C and injection time 3 s, are the optimal process conditions for the injection molding process of the new designed cable trunk
PC/ABS polymer alloy Multilon TN-7500 was adopted as the material of the cable trunk
Summary
A cable trunking system is defined as a system of enclosures consisting of slotted trunking lengths and other appropriate system components intended for the accommodation and, where necessary, for the segregation of conductors, insulated cables or cords in a cabinet. The traditional cable trunk is long and the traditional production process is plastic extrusion with PVC or other halogen containing materials. They have many disadvantages such as easy burning, producing toxic gases and smokes. The low smoke zero halogen (LSZH) materials, its production technology and its application in the cable industry have been investigated for decades to meet the needs of safety and environmental compatibility (Chaudhry et al, 1998; Cross et al, 2003; Hull et al, 2008; Naskar et al, 2007). The volumetric shrinkage warpage and the total warpage displacements were calculated and compared to find the optimal process conditions for the cable trunk
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