Irradiation crosslinking slurry-resistant halogen-free flame-retardant cable material used for petroleum platform and preparation method thereof

Abstract

The invention provides an irradiation crosslinking slurry-resistant halogen-free flame-retardant cable material used for a petroleum platform and a preparation method thereof. The material is composed of the following raw materials by weight: 25 to 55 parts of ethylene vinyl acetate copolymer, 10 to 20 parts of ethylene-vinyl acetate-carbon monoxide terpolymer, 25 to 45 parts of polyethylene, 5 to 15 parts of copolymer polyethylene grafted maleic anhydride, 8 to 10 parts of carbon black, 120 to 160 parts of a halogen-free flame retardant, 0.7 to 1.8 parts of a coupling agent, 1.5 to 3 parts of a crosslinking sensitizer, 1.4 to 2.4 parts of an antioxidant, 2 to 4 parts of silicone and 0.5 to 1.2 parts of a lubricant, wherein the ethylene vinyl acetate copolymer has a vinyl acetate VA content of 33% and a melt index of 0.2 g / 10min. According to the invention, the irradiation crosslinking slurry-resistant halogen-free flame-retardant cable material with low smoke, no toxicity, simple and convenient custom irradiation processing and low investment cost used for a petroleum platform and a preparation method thereof are provided; meanwhile, a halogen-free flame-retardant slurry-resistant sheathing material which meets the standards of halogen-free / anti-slurry cables used for a Norway NEK606 offshore platform can be produced.

Description

technical field [0001] The invention relates to the field of low-smoke, halogen-free, flame-retardant cable materials, in particular to a radiation-crosslinked, mud-resistant, halogen-free, flame-retardant cable material for oil platforms and a preparation method thereof. Background technique [0002] my country is rich in offshore oil resources. The proven geological reserves of oil in the South China Sea are 23 billion tons. It is called China's Persian Gulf. However, the sea area in this area is relatively deep, and the core technology of deep-water platform manufacturing is monopolized by foreign countries, which seriously restricts my country's South China Sea. Petroleum development and utilization. With the official drilling of Offshore Oil 981, China's first self-designed and built "sixth-generation deepwater semi-submersible drilling platform" in 2012, it marks a substantial step forward in the deepwater strategy of China's offshore oil industry. The technology of de...

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Problems solved by technology

[0006] Among the published mud-resistant cable material patents, the patent with application number 201310013029.9 discloses a power cable material for oil platforms and its preparation method, which uses hydrogenated nitrile as the matrix resin, and is wear-resistant, tear-resistant, oil-resistant, ozone-resistant, and oil-resistant. Mud, high flame retardancy and other properties, and meet the requirements of the Norwegian standard NEK606 for mud resistance, but it has the problems of high cost and large amount of smoke when burning, which is not conducive to popularization and application

[0007] The patent with the application number 201110359891.6 discloses a cable sheath material for offshore platforms and its preparation method. It uses ethylene-vinyl acetate rubber EVM as the base material, and acrylate rubber (ACM) and hydrogenated nitrile rubber with better oil resistance. Rubber (HNBR) and fluororubber (FKM) are blended and vulcanized by a peroxide crosslinking system, which has good mechanical properties, flame retardancy, and sludge resistance, but also has the problems of high cost and large amount of smoke when burned , and the use of peroxide cross-linking system for vulcanization requires special extrusion equipment and huge special cross-linking pipelines. The equipment investment is large, the process is cumbersome, and the cost is high

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