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<p>Polymeric materials have been commonly used to reinforce tomb mural pigment layers, but the consolidation effectiveness of different polymeric materials remains unclear. This study compares four common polymers—PVAc, Paraloid B72, Primal SF-016, and gelatin—by examining film properties (hydrophilicity, light transmittance, acid resistance, alkali resistance, water resistance, and UV resistance) and evaluating simulated murals for color difference, contact angle, water vapor permeability, and temperature-humidity aging resistance. Results indicate that SF-016 exhibits superior hydrophilicity and gelatin demonstrates outstanding UV transmission resistance. B72 and SF-016 show strong stability in acidic, alkaline, and aqueous environments, whereas PVAc is sensitive to alkaline conditions. Mural reinforcement simulations reveal that PVAc has poor compatibility with pigments like carbon black and iron oxide red. B72 significantly altered the surface wettability of the material; gelatin exhibited low adhesion and poor resistance to temperature-humidity aging, whereas SF-016 demonstrated high adhesion and excellent resistance to temperature-humidity aging.</p>

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Comparative analysis of four commonly used polymeric materials for consolidation of Tang tomb murals

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年7月14日

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  • Yuan Fang,
  • Meng-xing Shi,
  • Dou-dou Li,
  • Jia Wang,
  • Zhi-yong Lu,
  • Ting Zhao,
  • Wen-zong Yang,
  • Jian-feng Zhu,
  • Yue Zhang

摘要

Polymeric materials have been commonly used to reinforce tomb mural pigment layers, but the consolidation effectiveness of different polymeric materials remains unclear. This study compares four common polymers—PVAc, Paraloid B72, Primal SF-016, and gelatin—by examining film properties (hydrophilicity, light transmittance, acid resistance, alkali resistance, water resistance, and UV resistance) and evaluating simulated murals for color difference, contact angle, water vapor permeability, and temperature-humidity aging resistance. Results indicate that SF-016 exhibits superior hydrophilicity and gelatin demonstrates outstanding UV transmission resistance. B72 and SF-016 show strong stability in acidic, alkaline, and aqueous environments, whereas PVAc is sensitive to alkaline conditions. Mural reinforcement simulations reveal that PVAc has poor compatibility with pigments like carbon black and iron oxide red. B72 significantly altered the surface wettability of the material; gelatin exhibited low adhesion and poor resistance to temperature-humidity aging, whereas SF-016 demonstrated high adhesion and excellent resistance to temperature-humidity aging.