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

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^{1, 2},
孙凯^{1, 2},
张博宇^{1, 2, ,},
孔令满^{1, 2},
张灿宝^{1, 2},
蹇锡高^{1, 2, ,}

1.
大连理工大学　化工学院, 大连 116023
2.
大连理工大学　精细化工国家重点实验室, 大连 116023

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
计量
- 文章访问数: 41
- HTML全文浏览量: 17
- 被引次数: 0
出版历程
- 收稿日期: 2024-02-23
- 修回日期: 2024-03-18
- 录用日期: 2024-03-30
- 网络出版日期: 2024-04-28

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

GUO Heyang^{1, 2},
SUN Kai^{1, 2},
ZHANG Boyu^{1, 2
, ,},
KONG Lingman^{1, 2},
ZHANG Canbao^{1, 2},
JIAN Xigao^{1, 2
, ,}

1.
School of Chemical Engineering, Dalian University of Technology , Dalian 116023, China
2.
State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116023, China

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

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。
- 含二氮杂萘酮结构的聚醚砜酮 /
- 聚醚醚酮 /
- 拉伸力学行为 /
- 耐热性 /
- 断裂形式
Abstract: In order to explore the tensile mechanical behavior of a new high temperature resistant resin, Polyethersulfone ketones with diazanone structure ("PPESK"), a comparative experiment was conducted in this paper, and a typical commercial resin, Polyetheretherketone ("PEEK"), was used as a reference. The special mechanical behavior of PPESK was analyzed in detail from three aspects: heat resistance, sensitivity of tensile property to the change of tensile rate, and tensile deformation to fracture behavior. It is shown that the heat resistance of PPESK is much better than that of PEEK, and the strength and modulus are more sensitive to tensile rate changes. At room temperature up to 250℃, the deformation is within 6%, and brittle fracture occurs; only when the temperature reaches 260℃ and above, PPESK shows large deformation and toughness fracture occurs, which is very different from PEEK, which produces large deformation and toughness fracture under various conditions. The generation of the above special mechanical behavior is related to the twisted, non-coplanar heteronaphthalene ring in the structure of PPESK, as well as the strongly polar sulfone group and carbonyl group. These groups make PPESK amorphous form, and the molecular chain rigidity increases, the intermolecular forces increase, which in turn causes the glass transition temperature increases, the molecular movement ability decreases, resulting in more heat-resistant PPESK, tensile properties of more sensitive to changes in tensile rate, the form of fracture to the brittle fracture accompanied by the breakage of the main chain is dominant.
- Polyethersulfone ketones with diazanone structure /
- Polyetheretherketone /
- Tensile Mechanical Behavior /
- Heat resistance /
- Fracture form

HTML全文

图 1 PPESK与PEEK的分子结构

Figure 1. Molecular structure of PPESK and PEEK

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图 2 拉伸试样制备过程

Figure 2. Tensile specimen preparation process

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图 3 ISO-527拉伸试样^[30]

Figure 3. ISO-527 tensile spline^[30]

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图 4 试样拉伸曲线

Figure 4. Specimen tensile curve

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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

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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

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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

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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.

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图 9 PPESK与PEEK的X射线衍射图

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

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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

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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

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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

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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

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表 1 拉伸性能测试条件

Table 1. Tensile properties test conditions

Tensile temperature	Tensile speed
Tensile temperature	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	/	/

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