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Nonlinear Calibration Method for Pull Sensitivity Effect of Conducting Polymer Considering Temperature Effect

A conductive polymer, temperature effect technology, applied in the direction of strength characteristics, electromagnetic measurement devices, electromagnetic/magnetic solid deformation measurement, etc., can solve the problems of large temperature changes, poor accuracy of the deformation value of conductive polymers, etc. Effect

Active Publication Date: 2020-10-30
SHANDONG UNIV +1
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Problems solved by technology

[0004] The inventors have found that field applications and experiments all show that the pull-sensitivity effect of conductive polymers is greatly changed by the temperature during measurement. If the influence of temperature on resistance measurement is not considered in the process of determining the deformation of conductive polymers themselves, the obtained Conductive polymer deformation values ​​are less accurate

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  • Nonlinear Calibration Method for Pull Sensitivity Effect of Conducting Polymer Considering Temperature Effect
  • Nonlinear Calibration Method for Pull Sensitivity Effect of Conducting Polymer Considering Temperature Effect
  • Nonlinear Calibration Method for Pull Sensitivity Effect of Conducting Polymer Considering Temperature Effect

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[0069] A slow-speed tensile test was carried out on a temperature-controlled extensometer using a conductive polymer geobelt with high-density polyethylene (HDPE) as the matrix and superconducting carbon black as the filler. Each set of experiments was carried out at a constant temperature. The temperature is controlled every 5°C from -20°C to 40°C, the experimental results are as follows figure 1 shown.

[0070] (1) The pull-sensitivity characteristic curve at each temperature is the normalized resistance K corresponding to 10% strain 10 Perform normalization processing, such as figure 2 shown. It can be determined that the quadratic polynomial coefficients in formula (2) are: a=0.00845; b=0.01594.

[0071] (2)K 10 and working temperature T s relationship between image 3 As shown, the linear coefficient in formula (3) can be determined as: A=0.09421; B=3.162.

[0072] (3) Initial resistance value R 0 with the initial temperature T 0 The relationship between Figu...

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Abstract

The invention provides a nonlinear calibration method of a conducting polymer tensile sensitive effect considering a temperature effect. The method comprises the following steps: carrying out a tensile test on a conductive polymer at constant temperature to obtain a plurality of groups of tensile sensitive characteristic curves of the conductive polymer at different temperatures; in order to eliminate the influence of working temperature on tensile sensitive characteristics, normalizing all the tensile sensitive characteristic curves by using respective K10, wherein the normalized tensile sensitive characteristic curves obey quadratic polynomial distribution; K10 is a normalized resistance corresponding to a strain of 10% at the same temperature; according to the linear relationship between the K10 and the working temperature and the normalized relationship between the normalized tensile sensitive characteristic curves and the K10, a nonlinear calibration model of the conducting polymer tensile sensitive effect in the working temperature range is obtained, and then the obtained nonlinear calibration model is used for calibrating the tensile sensitive effect of the conductive polymer. The accuracy of the deformation value of the conductive polymer is improved.

Description

technical field [0001] The disclosure belongs to the field of non-linear calibration of the pull-sensitivity effect of conductive polymers, in particular to a nonlinear calibration method of pull-sensitivity effects of conductive polymers considering temperature effects. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] Since the advent of conductive polymers in the 1970s, they have been widely used in engineering fields such as civil engineering, transportation, and water conservancy. The conductive polymer has a pull-sensitivity effect after being processed by a special process, that is, its stretching deformation under the action of external stretching will cause its own resistance to increase. Based on this principle, the deformation of the conductive polymer itself can be determined by measuring the change in electrical resistance. ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/08G01N3/62G01B7/16G06F17/18
CPCG01B7/18G01N3/08G01N3/62G01N2203/0017G01N2203/0682G06F17/18
Inventor 崔新壮齐辉薛志超李骏孙华琛王艺霖刑兰景金青张小宁王帅孙玉杰韩若楠王洁茹
Owner SHANDONG UNIV
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