中国塑料 ›› 2025, Vol. 39 ›› Issue (7): 93-101.DOI: 10.19491/j.issn.1001-9278.2025.07.015

• 助剂 • 上一篇    下一篇

钙盐成核剂对聚丁烯⁃1非等温结晶动力学及晶型转变的影响

李子涵(), 宋超波, 张紧紧, 梁大立, 林华杰   

  1. 中石化宁波新材料研究院有限公司,浙江 宁波 315207
  • 收稿日期:2024-07-31 出版日期:2025-07-26 发布日期:2025-07-22
  • 作者简介:李子涵(1995-),女,中级工程师,主要研究方向为PB⁃1性能研究及产品开发,lizh479.zhlh@sinopec.com

Effect of calcium salt nucleating agent on non⁃isothermal crystallization kinetics and crystal form transformation of polybutene-1

LI Zihan(), SONG Chaobo, ZHANG Jinjin, LIANG Dali, LIN Huajie   

  1. Sinopec Ningbo New Materials Research Institute Company Limited,Ningbo 315207,China
  • Received:2024-07-31 Online:2025-07-26 Published:2025-07-22

摘要:

在以提高聚丁烯⁃1(PB⁃1)的结晶性能为目的的成核剂筛选中,发现钙盐成核剂可明显提高PB⁃1的结晶性能和力学性能以及促进其晶型II⁃I的转化。以3款筛选出的钙盐成核剂作为添加剂,用差示扫描量热仪(DSC)研究了改性后PB⁃1后复合材料的热力学结晶行为及非等温结晶动力学,发现3款钙盐成核剂均可显著提高PB⁃1的结晶性能。通过粉末X⁃射线衍射仪(PXRD)跟踪了成核剂改性后PB⁃1的晶型转变情况,发现钙盐成核剂加入后可明显加快PB⁃1晶型II向晶型I的转变。此外,力学性能测试结果还表明钙盐成核剂可显著提高PB⁃1的力学性能。

关键词: 聚丁烯?1, 钙盐成核剂, 非等温结晶, 结晶动力学, 晶型转变

Abstract:

This study investigated calcium salt nucleating agents for enhancing the crystallization and mechanical properties of polybutene⁃1 (PB⁃1), with particular focus on accelerating the crystal form II⁃I transformation. Three selected calcium salt nucleators were evaluated using differential scanning calorimetry to analyze thermodynamic crystallization behavior and non⁃isothermal crystallization kinetics. Results demonstrated significant improvements in crystallization properties for all modified PB⁃1 composites. Powder X⁃ray diffraction analysis revealed that calcium salt nucleators markedly accelerated the phase transition from form II to form I crystals. Furthermore, mechanical property testing showed substantial enhancement in PB⁃1 performance with calcium nucleator incorporation. These findings provide valuable insights for developing high⁃performance PB⁃1 materials through nucleating agent modification.

Key words: polybutene?1, xcalcium salt nucleating agent, non?isothermal crystallization, crystallization kinetics, polymorphic transformation

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