Polypropylene filler yarn and preparation method thereof

Abstract

The invention discloses a polypropylene filler yarn. The polypropylene filler yarn is prepared by the following steps: mixing polypropylene resin, a filling master batch and a defoaming agent; carrying out hot extrusion and cutting, wherein the weight ratio of the polypropylene resin to the filling master batch is 1 to 1 or 1 to 3; the adding proportion of the defoaming agent is 1 / 25 of total weight of a mixture of the polypropylene resin and the filling master batch. According to the polypropylene filler yarn disclosed by the invention, the polypropylene resin and the filling master batch are used as raw materials; by means of the filling master batch, the toughness of the polypropylene filler yarn is improved, the tensile and compressive performances of the polypropylene filler yarn are improved, the tensile rate reaches 20 to 30 percent, and the tensile strength is 6 to 10N / mm; by adding the defoaming agent, the performance of the polypropylene filler yarn is favorably further maintained and the influence of bubbles on the performance of the polypropylene filler yarn in a production process is avoided.

Description

technical field [0001] The invention relates to the field of cable filling rope manufacture, in particular to a polypropylene filling rope and a preparation method thereof. Background technique [0002] The wire and cable industry accounts for 1 / 4 of the output value of China's electrical industry. It has a wide range of applications, involving electric power, construction, communication, manufacturing and other industries, and is closely related to various sectors of the national economy. Wires and cables are also known as the "arteries" and "nerves" of the national economy. They are indispensable basic equipment for transmitting electric energy, transmitting information, manufacturing various motors, instruments, and meters, and realizing electromagnetic energy conversion. Basic products necessary in a modernized society. [0003] Polypropylene, English name: Polypropylene, referred to as polypropylene, is a thermoplastic resin made by polymerizing propylene. Polypropyle...

AI Technical Summary

Problems solved by technology

Polypropylene is widely used as a filler for wires and cables due to its excellent mechanical properties, such as the manufacture of polypropylene filled ropes, but the current polypropylene filled ropes have insufficient tensile strength and are easy to break, resulting in the use of cables. The roundness and compressive and tensile capacity of the steel pipe are reduced, which cannot meet the requirements of medium and high-end wire and cable