Comparison of Photo Degradation Behavior of LDPE using Accelerated Weathering Instruments

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  • 低密度ポリエチレンの耐候性試験機による劣化挙動の比較
  • テイミツド ポリエチレン ノ タイコウセイ シケンキ ニ ヨル レッカ キョドウ ノ ヒカク

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Abstract

Samples of low-density polyethylene (LDPE) were photodegraded using accelerated weathering instruments and outdoor exposure. The physical properties and chemical structures of the photodegraded samples were studied through a tensile test, gel chromatography, and infrared spectroscopy. The molecular weight distribution of a photodegraded sample by using a fluorescent UV lamp at a high black panel temperature (80°C) was more similar to that of an outdoor-degraded sample than that of other artificially photodegraded samples by using a Xenon lamp at the standard black panel temperature (63°C). It is estimated that accelerated weathering tests at a high sample temperature could accelerate cross-linking than chain scission, consequently recreating molecule-enlargement similar to the outdoor-degraded sample.

Journal

  • Zairyo-to-Kankyo

    Zairyo-to-Kankyo 64 (4), 139-144, 2015

    Japan Society of Corrosion Engineering

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