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<p>Utilizing melt blending, ten different nucleating agents (NAs) were dispersed at 0.2 mass% in nylon 6 (PA6) matrix. A comprehensive examination of their influence on the crystallization and mechanical characteristics of PA6 was conducted through differential scanning calorimetry (DSC), X-ray diffraction (XRD), polarized optical microscope (POM), and mechanical property evaluations. DSC analysis indicated that the addition of various NAs triggered heterogeneous crystallization in PA6. In comparison with pure PA6, the crystallization peak temperature (<InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(T_{{\text{c}}}\)</EquationSource> <EquationSource Format="MATHML"><math> <msub> <mi>T</mi> <mtext>c</mtext> </msub> </math></EquationSource> </InlineEquation>) of PA6 modified with talc, HHPA-Ca, and TMC200 increased by approximately 4&#xa0;°C, with crystallinity was enhanced to 36.2%, 34.3%, and 34.0%, respectively. The complete crystallization time of PA6 modified with HHPA-Ca was lowered from 6 to 2&#xa0;min. Furthermore, XRD testing indicates that the addition of the HHPA-Na induces a phase transformation from the <i>γ</i> phase to the <i>α</i> phase in PA6. Corresponding mechanical properties tests exhibited a significant enhancement in both tensile strength and flexural modulus, with the former increasing by 83.4% and the latter by 26.4%.</p>

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Crystallization behavior and mechanical properties of nylon 6 modified with different nucleating agents

  • 期刊论文

  • 发表日期：

    2026年5月14日

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  • Ting Huang,
  • Mei-jiao Yuan,
  • Yue-Fei Zhang

摘要

Utilizing melt blending, ten different nucleating agents (NAs) were dispersed at 0.2 mass% in nylon 6 (PA6) matrix. A comprehensive examination of their influence on the crystallization and mechanical characteristics of PA6 was conducted through differential scanning calorimetry (DSC), X-ray diffraction (XRD), polarized optical microscope (POM), and mechanical property evaluations. DSC analysis indicated that the addition of various NAs triggered heterogeneous crystallization in PA6. In comparison with pure PA6, the crystallization peak temperature ( \(T_{{\text{c}}}\) T c ) of PA6 modified with talc, HHPA-Ca, and TMC200 increased by approximately 4 °C, with crystallinity was enhanced to 36.2%, 34.3%, and 34.0%, respectively. The complete crystallization time of PA6 modified with HHPA-Ca was lowered from 6 to 2 min. Furthermore, XRD testing indicates that the addition of the HHPA-Na induces a phase transformation from the γ phase to the α phase in PA6. Corresponding mechanical properties tests exhibited a significant enhancement in both tensile strength and flexural modulus, with the former increasing by 83.4% and the latter by 26.4%.