Marine cable anti-mildew agent: Establishing a long-lasting anti-mildew defense line for cables in marine environments
Marine cables operate in a marine environment with high temperatures,high humidity, and salt fog, which creates a conducive environment for mold growth. Mold proliferation is one of the hidden threats that affect the long-term reliability of cables. The cabins of ships are enclosed spaces with limited ventilation, and the relative humidity remains at a high level throughout the year, precisely within the range where mold thrives. Once mold colonizes on the cable sheath, its mycelia penetrate the material, potentially causing a decrease in insulation resistance, mechanical performance degradation, and even the formation of electrical breakdown hazards. The core value of marine cable anti-mold agents lies in intervening at the source of the cable sheath material formulation to provide microbial protection for the long-term service of the cables in the marine environment.
Why are marine cables required to be treated against mold ?
The need for mold prevention in marine cables stems from both environmental and material factors. From the environmental perspective, ships are constantly exposed to humid and high-salt fog conditions in the ocean, with cabin temperatures typically ranging from 25 to 30 degrees Celsius, and relative humidity often exceeding 90%, which is precisely the ideal condition for mold growth. From the material perspective, additives such as calcium carbonate, carbon black, and stearic acid in the cable sheath material formulation may provide nutrients for mold, increasing the risk of mold growth.
Mold does not only harm the surface of the cable. After the mycelia grow on the cable sheath surface, they may secrete organic acids to erode the polymer chains, causing micro-cracks in the sheath and providing channels for water and salt fog penetration. For marine cables that perform power transmission and signal control functions, any attenuation of insulation performance may be related to the safety of ship operation. In industry practice, the mold growth grade of environmentally friendly marine cables is usually required to be 0-1, meaning that the mold coverage area is kept at an extremely low level, and the retention rate of mechanical properties such as tensile strength after testing must remain at a high standard.
Dalian Tianwei Marine Cable Anti-Mold Solution: Technical Core
Dalian Tianwei Chemical Co.,Ltd. has developed a cable-specific silver-zinc composite antibacterial and anti-mold solution for PVC cable materials.The product includes two formulations: antibacterial powder and antibacterial masterbatch,which are suitable for the processing technology and mold prevention requirements of marine cable sheath materials.
