Polyethylene multi-pore plum-shaped pipe and preparation method thereof

Abstract

The invention discloses a polyethylene multi-pore plum-shaped pipe, which comprises the following raw materials in parts by weight: 65-70 parts of low-density polyethylene, 24-28 parts of polyamide, 55-60 parts of ethylene-vinyl acetate copolymer, 40-45 parts of composite flame-retardant polyvinyl alcohol, 14-17 parts of carbon nanotubes, 5-8 parts of plasticizers, 18-21 parts of azobisisobutyronitrile and 3-5 parts of functional auxiliary agents. In the preparation process of the plum-shaped pipe, low-density polyethylene and the ethylene-vinyl acetate copolymer are polymerized under the action of azodiisobutyronitrile to form a macromolecular resin, and thus the strength and toughness of the plum-shaped pipe can be improved; and meanwhile, the composite flame retardant polyvinyl alcoholpolymer has certain bonding performance in a high-temperature molten state, and thus the carbon nanotubes can be uniformly bonded and fixed in the macromolecular resin prepared in the first step, so that the strength of the macromolecular resin is improved.

Description

technical field [0001] The invention belongs to the field of preparation of plum-blossom pipes, and relates to a polyethylene porous plum-blossom pipe and a preparation method thereof. Background technique [0002] Plum blossom tube is a kind of plum blossom-shaped communication pipe formed by PVC particles as the main material and other formulas through a unique mold, also known as honeycomb pipe. There are three types of five holes, seven holes and nine holes. Smooth, directly wearable optical cable, can save working hours, its structure is reasonable, high use value, long life, it is mainly used for communication cable sheath tube. [0003] In the existing plum-blossom pipe preparation process, the tensile strength of the plum-blossom pipe is directly increased by adding a reinforcing agent, but the dispersion performance of the reinforcing agent will be changed by melting during the preparation process of the plum-blossom pipe, and the strength of the plum-blossom pipe d...

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Problems solved by technology

[0005] The composite flame-retardant polyvinyl alcohol of the present invention has higher flame-retardant properties, and when dispersed in a macromolecular resin, the resin has a certain flame-retardant ability, and then the prepared plum blossom tube has a higher flame-retardant ability. After the fuel is added to the polyvinyl alcohol, it is bonded by the polyvinyl alcohol. At the same time, because the polyvinyl alcohol molecular chain contains hydroxyl groups, the cross-linking and fixing between each polyvinyl alcohol molecule is realized under the cross-linking action of toluene diisocyanate, and then The composite flame retardant is coated in the cross-linked network structure, even when the polyvinyl alcohol is melted, it will not detach, so that the composite flame retardant can be evenly dispersed in the resin, and the flame retardant performance in the resin can be evenly distributed Stable, solves the problem that the flame retardant is directly added in the preparation process of the existing plum blossom tube to achieve flame retardancy, but the flame retardant is easy to agglomerate, making the flame retardancy of the plum blossom tube wall uneven

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