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Geotextile production line manufacturers take you to understand the establishment of geotextile aging equation

  • Categories:Industry News
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  • Time of issue:2023-02-03
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(Summary description)Geotextile production line manufacturers tell you that according to foreign laboratory research on polypropylene geotextile plastic products, year-round observation and practical experience, its oxidation rate and aging durability are in the absence of sunlight or at most under extremely weak scattering In the presence of light, it obeys the law of Arrhenius exponent.

Geotextile production line manufacturers take you to understand the establishment of geotextile aging equation

(Summary description)Geotextile production line manufacturers tell you that according to foreign laboratory research on polypropylene geotextile plastic products, year-round observation and practical experience, its oxidation rate and aging durability are in the absence of sunlight or at most under extremely weak scattering In the presence of light, it obeys the law of Arrhenius exponent.

  • Categories:Industry News
  • Author:
  • Origin:
  • Time of issue:2023-02-03
  • Views:0

Geotextile production line manufacturers tell you that according to foreign laboratory research on polypropylene geotextile plastic products, year-round observation and practical experience, its oxidation rate and aging durability are in the absence of sunlight or at most under extremely weak scattering In the presence of light, it obeys the law of Arrhenius exponent. This law relates most chemical reactions to temperature, and the final activation energy remains essentially constant regardless of the type of stabilizer formulation used, or the presence of oxidizing agents such as certain metal ions. Based on this, it is possible and reliable to extrapolate the experimental data measured at high temperature to low service temperature. The standard test temperature is 150±1°C, which is internationally recognized, and an accelerated aging experimental model for predicting the service life of polypropylene geotextiles can be established.

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The Geotextile production line manufacturer tells you that one of the most basic prerequisites for the prediction of the above fiber durability is to reduce the fiber strength to 2. 0cN/dtex as the criterion for achieving effective durability. In different practical applications, the criteria for judging the durability of fibers are not the same, and it is not easy to determine, so it needs to be analyzed in detail.
The oxidative degradation of polypropylene is generally divided into two stages: the induction stage and the autocatalytic stage. In the induction phase, the fiber strength decreases slowly; while in the autocatalysis phase, the fiber strength decreases rapidly. Therefore, during the actual use of polypropylene geotextile fibers, during the induction period, the fibers can maintain sufficient strength and have high reliability in use. The Geotextile production line manufacturer tells you that from the previous experimental results, it can be seen that whether it is an acid-base treated fiber or an untreated fiber, the induction period is about 1/3 of the aging period, that is, 1/3 of the predicted durability period of the fiber It is more reliable to use during the period, so the safety factor is set to 1/3e.

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