Organosilane crosslinked polyethylene power cable material with sound absorption and sound insulation functions and preparation method thereof

Abstract

The invention discloses an organosilane crosslinked polyethylene power cable material with sound absorption and sound insulation functions. The material is characterized by being made of the following raw materials by weight: 60 to 70 parts of high-density polyethylene, 30 to 40 parts of medium-density polyethylene, 14 to 17 parts of nylon 6, 11 to 14 parts of acrylic fibers, 10 to 15 parts of vermiculite, 30 to 40 parts of polyurethane emulsion, 14 to 20 parts of vinyltriethoxvsilane, 13 to 18 parts of StronWi powder, 1.4 to 2.8 parts of antimonous oxide, 2 to 4 parts of sodium antimonate, 0.1 to 0.3 part of an antioxidant 1010, 0.2 to 0.4 part of vinyl benzene, 0.3 to 0.5 part of dibutyltin dilaurate, 2.1 to 3.5 parts of dioctyl phthalate, 3 to 5 parts of isopropyl palmitate and a proper amount of water. According to the invention, the addition of modified acrylic fibers improves tear resistance of the power cable material; the addition of vermiculite with pores of different sizes as a filler can improve sound absorption and sound insulation properties of the power cable material; meanwhile, the organosilane crosslinked polyethylene power cable material provided by the invention is low in smoke and free of halogen, does not release poisonous and harmful gas, is safe and environment friendly, has excellent properties like thermal aging resistance, oil resistance and wear resistance and has broad application prospects.

Description

technical field [0001] The invention relates to the technical field of cable materials, in particular to a silane crosslinked polyethylene cable material with sound-absorbing and sound-insulating functions and a manufacturing method thereof. Background technique [0002] With the development of modern science and technology, people have higher and higher quality requirements for wires and cables. The appearance of silane cross-linked polyethylene makes up for the shortage of ordinary polyethylene wires and cables. Silane cross-linked polyethylene cable material can improve the transmission capacity and overload capacity of the line, and when the material is used to manufacture cross-linked wires and cables, compared with peroxide cross-linking and radiation cross-linking, the required manufacturing equipment is simple and easy to operate. Convenience, comprehensive low cost and other advantages, as the insulating material of low-voltage power cables, it has become the leading...

AI Technical Summary

Problems solved by technology

[0003] High-density polyethylene is cheap, light in weight, and excellent in performance, but the linear molecular structure of high-density polyethylene determines its performance defects at higher temperatures, such as decreased intermolecular bonding, prone to deformation, and creep Increase, rigidity and mechanical properties decrease; high-density polyethylene is a non-polar polymer. Although it has good barrier properties to polar solvents such as water, it has high permeability to organic solvents such as xylene and gas barrier properties. not good too

Nylon is a polar polymer, which has good barrier properties to non-polar solvents and gases, but poor barrier properties to polar solvents, and nylon is easy to absorb water, thereby reducing the mechanical properties of the material

Blending high-density polyethylene modified by silane cross-linking with nylon can improve the barrier properties of cable materials, but its function is relatively single. There are still defects in sunlight resistance and other aspects