to further processing such as weaving to obtain an insulating rope the moisture absorption rate of the insulating rope is 1 42 after being washed for 10 times and immersed for 15 minutes at 15 u02dc 20 cm below water surface when the harsh conditions of environment temperature at 30 u00b0 c relative humidity at 85 ultraviolet wavelength at 340 nm and the irradiation smaller than or equal to 50 w m 2 are simulated and kept for 150 h the result of the accelerated aging test is that the tensile strength is reduced by 10 18 2 evenly mixing 1 5 kg of waterborne polyurethane polyacrylic acid decyl acrylate copolymer nano emulsion prepared in example 2 with 2 kg of silane coupling agent kh 550 and 1 kg silane coupling agent kh 570 to prepare the mixed conditioning fluid and soaking 150 kg of pbo yarn into the mixed conditioning fluid wherein the temperature of the mixed conditioning fluid is controlled at 115 u00b0 c and the treatment time of pbo yarn is 52 min 3 taking out the pbo yarn from the mixed conditioning fluid washing with water and then drying it soaking the pbo yarn in 22 5 kg of perfluor c8 chain waterproofing agent tg 581 and adding 1 95 g of c i basic yellow 24 in the perfluor c8 chain waterproofing agent wherein the temperature of the perfluor c8 chain waterproofing agent is controlled at 118 u00b0 c and the treatment time is 36 min 4 baking the waterproof treated.