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新型耐高温树脂—含二氮杂萘酮结构聚醚砜酮的拉伸力学行为

郭贺阳 孙凯 张博宇 孔令满 张灿宝 蹇锡高

郭贺阳, 孙凯, 张博宇, 等. 新型耐高温树脂—含二氮杂萘酮结构聚醚砜酮的拉伸力学行为[J]. 复合材料学报, 2024, 42(0): 1-11.
引用本文: 郭贺阳, 孙凯, 张博宇, 等. 新型耐高温树脂—含二氮杂萘酮结构聚醚砜酮的拉伸力学行为[J]. 复合材料学报, 2024, 42(0): 1-11.
GUO Heyang, SUN Kai, ZHANG Boyu, et al. Tensile Mechanical Behavior of a New High-Temperature Resin, Polyethersulfone Ketones with Diazanone Structure[J]. Acta Materiae Compositae Sinica.
Citation: GUO Heyang, SUN Kai, ZHANG Boyu, et al. Tensile Mechanical Behavior of a New High-Temperature Resin, Polyethersulfone Ketones with Diazanone Structure[J]. Acta Materiae Compositae Sinica.

新型耐高温树脂—含二氮杂萘酮结构聚醚砜酮的拉伸力学行为

基金项目: 国家自然科学基金青年科学基金项目(52005077);辽宁省自然科学基金项目(2022-BS-090);中央高校基本科研业务费(DUT23RC(3)010)
详细信息
    通讯作者:

    张博宇,研究生,副研究员,博士生导师,研究方向为热塑性复合材料构件高质量自动化制造技术与装备 E-mail: zhangboyu@dlut.edu.cn

    蹇锡高,研究生,中国工程院院士,博士生导师,研究方向为高性能树脂基复合材料 E-mail: jian4616@dlut.edu.cn

  • 中图分类号: TQ322.3; TB332

Tensile Mechanical Behavior of a New High-Temperature Resin, Polyethersulfone Ketones with Diazanone Structure

Funds: National Natural Science Foundation for Young Scholars of China (No. 52005077); Natural Science Foundation of Liaoning Province (No. 2022-BS-090); the Fundamental Research Funds for the Central Universities (No. DUT23RC(3)010)
  • 摘要: 为探索新型耐高温树脂——含二氮杂萘酮结构的聚醚砜酮(简称“PPESK”)的拉伸力学行为,本文采用对比实验的方式,以典型商用树脂——聚醚醚酮(简称“PEEK”)为参照,从耐热性、拉伸性能对拉伸速率变化的敏感性、拉伸变形-断裂行为三个层面详细分析了PPESK力学行为的特殊之处。研究表明,PPESK的耐热性远优于PEEK,且强度和模量对拉伸速率变化更敏感。在室温至250℃时,形变量在6%以内,发生脆性断裂;仅当温度达260℃及以上时,PPESK才出现较大变形,发生韧性断裂,这与各种条件下均产生大变形且韧性断裂的PEEK截然不同。上述特殊力学行为的产生,与PPESK结构中扭曲、非共平面的杂萘环以及强极性的砜基、羰基有关。这些基团使PPESK为无定形形态,且分子链刚性增大、分子间作用力增强,进而引起玻璃化转变温度升高、分子运动能力下降,导致PPESK更耐热、拉伸性能对拉伸速率变化更敏感,断裂形式以伴随主链断裂的脆性断裂为主。

     

  • 图  1  PPESK与PEEK的分子结构

    Figure  1.  Molecular structure of PPESK and PEEK

    图  2  拉伸试样制备过程

    Figure  2.  Tensile specimen preparation process

    图  3  ISO-527拉伸试样[30]

    Figure  3.  ISO-527 tensile spline[30]

    图  4  试样拉伸曲线

    Figure  4.  Specimen tensile curve

    图  5  不同温度下PPESK与PEEK强度和模量对比结果:(a)强度;(b)弹性模量

    Figure  5.  Comparison results of strength and modulus of PPESK and PEEK at different temperatures: (a) strength; (b) elastic modulus

    图  6  PPESK与PEEK的DMA曲线:(a)损耗模量;(b)储能模量

    Figure  6.  DMA curve of PPESK and PEEK: (a) loss modulus; (b) energy storage modulus

    图  7  PPESK与PEEK在不同温度下拉伸时的应力-应变曲线:(a)PPESK;(b)PEEK

    Figure  7.  Stress-strain curves of PPESK and PEEK at different stretching temperatures: (a) PPESK; (b) PEEK

    图  8  PPESK试样与PEEK试样变形-破坏过程照片

    Figure  8.  Photographs of the deformation and destruction process of PPESK and PEEK specimens.

    图  9  PPESK与PEEK的X射线衍射图

    Figure  9.  X-ray diffraction pattern of PPESK and PEEK

    图  10  PPESK试样与PEEK试样断口的微观形貌

    Figure  10.  Microscopic morphology of fracture of PPESK and PEEK specimens

    图  11  PPESK试样与PEEK试样的断口尺寸对比

    Figure  11.  Comparison of fracture size between PPESK and PEEK specimens

    图  12  PPESK与PEEK在不同速率下拉伸时的应力-应变曲线:(a)PPESK;(b)PEEK

    Figure  12.  Stress-strain curves of PPESK and PEEK at different rates of stretching: (a) PPESK; (b) PEEK

    图  13  PPESK与PEEK模量和强度随拉伸速率的变化趋势:(a)强度;(b)弹性模量

    Figure  13.  Trends of PPESK and PEEK modulus and strength with tensile rate: (a) strength; (b) elastic modulus

    表  1  拉伸性能测试条件

    Table  1.   Tensile properties test conditions

    Tensile temperature Tensile speed
    0.5 mm/min 5 mm/min 50 mm/min 500 mm/min
    25℃ PPESK/PEEK PPESK/PEEK PPESK/PEEK PPESK/PEEK
    80℃ / PPESK/PEEK / /
    130℃ / PPESK/PEEK / /
    150℃ / PEEK / /
    180℃ / PPESK/PEEK / /
    230℃ / PPESK / /
    240℃ / PPESK / /
    250℃ / PPESK / /
    260℃ / PPESK / /
    下载: 导出CSV
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  • 收稿日期:  2024-02-23
  • 修回日期:  2024-03-18
  • 录用日期:  2024-03-30
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