Insulating resin composition for DC power cable, resin cross-linked body, DC power cable, reinforcing insulation layer forming member for DC power cable connecting part and DC power cable connecting part

摘要

[PROBLEMS] To form an insulating layer that has excellent extrudability, is resistant to sag, has good scorch resistance, has a small amount of secondary cracked water, and stably exhibits good direct current electric characteristics. To provide an insulating resin composition for a DC power cable having excellent properties. (A) Complex viscosity η * 100 at 130 ° C. and frequency 100 rad / s is 600 to 1300 Pa · s, complex viscosity η * 0.1 at 130 ° C. and frequency 0.1 rad / s, and complex viscosity η * From a mixture of low density polyethylene having a ratio (η * 0.1 / η * 100) of 100 or more, (B) modified polyethylene, (C) hindered phenol antioxidant and thioether antioxidant The amount of the carbonyl group introduced into the resin composition by the component (B) relative to the total mass of the component (A), the component (B) and the component (C) 7 × 10 −6 to 1.3 × 10 −5 mol / g. [Selection] Figure 1