无卤低烟阻燃电缆生产工艺研究

Study of the Production Technology for LSOH Flame Retardant and Five- resisting Power Cables

为优化无卤低烟阻燃耐火电缆的制备工艺，研究了绕包、圆整、挤出等工艺条件。考察了绕包率、挤出温度对该电缆的性能影响。研究显示，绕包率高于30％时可满足耐火特性阻燃性能要求，挤出温度应在120～160℃时，可满足成型塑化要求；所研制的电缆阻燃性能达A类标准，烟浓度透光率达85％，材料烟气毒性为二级。通过工艺优化，获得了无卤、低烟型阻燃电缆。

To optimize the technology conditions for producing LSOH flame retardant and five -resisting power cables with oxygen -barrier , winding package , circular , and extrusion were studied in detail .The effects of the winding package and the temperature on the power cables performance were investigated .The results indi-cated that winding package （〉30%） and temperature （ 120~160℃） could meet the requirement of the prod-uct.The safety performance index of the product reached the international industry standard level .Moreover, the flame retardant performance passed over standard A and its smoke density light transmittance is high than 85%. Based on the optimization of production technology , the power cable of LSOH flame retardant was achieved .