High-performance micro-prestressing-force thermoplastic intelligent fiber rod and manufacturing method thereof

Abstract

The invention, which relates to fields of the building composite material, the sensor, the engineering detection, and solid mechanics, discloses a high-performance micro-prestressing-force thermoplastic intelligent fiber rod and a manufacturing method thereof. The fiber rod comprises a sensing fiber (10) and a thermoplastic rod body (20). The outside of the sensing fiber (10) is coated with the thermoplastic rod body (20). The sensing fiber (10) is a communication fiber with an applied micro-prestressing force; and the thermoplastic rod body (20) is a high-polymer-material-based coating element. The intelligent fiber rod has the following advantages: firstly, the weight is light, the density is 1900kg / m<3>, the rigidity and flexibility are high, and the fiber rod also has corrosion-resistant, magnetism-free, electric insulation, eddy-loss-free, and eddy-interference-free functions; secondly, the intelligent fiber rod belongs to the passive sensor field and does not need a power supply, so that a problem of electrode corrosion can be solved; and thirdly, the service life is long; the base material thermoplastic unit is arranged inside the structure and isolated from the fiber and air, so that the service life is prolonged; and the functional material fiber is a piece of glass essentially and has the service life equal to the structure.

Description

technical field [0001] The invention relates to the fields of building composite materials, sensors, engineering detection and solid mechanics, especially a [0002] A high-performance micro-prestressed thermoplastic intelligent optical fiber rod and a manufacturing method thereof. Background technique [0003] The Brillouin scattered light inside the fiber is sensitive to stress and temperature. According to this principle, there are relatively mature distributed optical fiber sensing technologies. The feature of this technology is continuous measurement instead of traditional point measurement, so its application and promotion will lead to revolutionary technological breakthroughs in the field of engineering detection and sensor application. Japan, Canada, Germany and China have successively developed Brillouin scattering optical fiber analyzers, commonly known as photonometers. The optical fibers used are very delicate and cannot adapt to the rough engineering environm...

AI Technical Summary

Problems solved by technology

[0007] 1. Although the tensile strength is high, it is a brittle material, so the bending performance is not good. Usually, during transportation, the minimum bending radius is 1.5 meters, but in engineering laying, the minimum bending radius is limited to 1.75 meters, which cannot adapt to smaller Or engineering components with large curvature;

[0008] 2. It is a thermosetting material, so it is inconvenient to do secondary processing;

[0009] 3. The material of the pultrusion process is added with an integral mold release agent zinc stearate, so it is inconvenient to glue the connection, and it is also inconvenient to glue and fix the end, and the pultrusion process will cause the optical fiber to bend and relax slightly, causing excessive light attenuation , affecting the sensitivity of the sensor

Images