Hydrophobic and oleophobic polyethylene master batch, preparation method thereof and polyethylene pipeline material

Abstract

The invention relates to a hydrophobic and oleophobic polyethylene master batch which comprises the following raw materials: metallocene polyethylene, fluorinated ethylene propylene, multi-walled carbon nanotubes and an antioxidant, the particle size of the fluorinated ethylene propylene is 200-400 nm, the diameter of the multi-walled carbon nanotubes is 5-15 nm, and the length of the multi-walled carbon nanotubes is 10-30 [mu] m; the dosage of each component of the raw materials is as follows: 30 parts by mass of metallocene polyethylene, 0.1-3 parts by mass of fluorinated ethylene propylene, 1-5 parts by mass of multiwalled carbon nanotubes and 0.5-2 parts by mass of an antioxidant. The invention also relates to a preparation method of the hydrophobic and oleophobic polyethylene master batch and a polyethylene pipeline material. The polyethylene master batch and the polyethylene pipe prepared by adopting the formula provided by the invention have better effects in the aspects of scaling and wax precipitation resistance, and are convenient to popularize and use in oil fields.

Description

technical field [0001] The invention relates to the field of polyethylene, in particular to a hydrophobic and oleophobic polyethylene master batch and a preparation method thereof, and a polyethylene pipe material comprising the polyethylene master batch. The polyethylene pipe prepared from the polyethylene pipe material is particularly suitable for use in For oil field pipelines. Background technique [0002] In recent years, with the increasingly harsh environment of oilfield medium, water content and temperature have gradually increased, and Cl - , CO 2 The content of other corrosive media increases, and even H appears in oil and gas wells in some areas. 2 S, brings a great risk to the application of metal pipes. Severe corrosion, scaling, waxing or leakage of steel pipelines has become one of the key bottleneck technologies restricting oilfield development. Leakage accidents also bring serious safety and environmental risks. Every year, plugging and replacing pipeline...

AI Technical Summary

Problems solved by technology

The concentration of dispersed carbon nanotubes in organic solvents is low, and it is difficult to obtain high-concentration carbon nanotube dispersions. At the same time, the large amount of volatile solvents used is not only not conducive to environmental protection, but also brings huge safety hazards to large-scale production.

[0010] Traditional polyethylene masterbatches are difficult to improve the surface oil and hydrophobic properties of products, and the above methods have defects such as the use of solvents and harsh processing conditions.

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