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浙江大学学报(工学版)
浙江大学学报(工学版)  2024, Vol. 58 Issue (8): 1596-1603    DOI: 10.3785/j.issn.1008-973X.2024.08.007
机械工程、能源工程     
超声分散时间对GO-CF增强SMPC形状记忆性能的影响
宋晨1(),马玉钦1,*(),阮鸥2,徐津3,刘欣然1,刘思濛1
1. 长安大学 道路施工技术与装备教育部重点实验室，陕西 西安 710064
2. 威睿电动汽车技术（宁波）有限公司，浙江 宁波 315000
3. 极氪汽车（宁波杭州湾新区）有限公司，浙江 宁波 315336
Effect of ultrasonic dispersion time on shape memory performance of GO-CF reinforced SMPC
Chen SONG1(),Yuqin MA1,*(),Ou RUAN2,Jin XU3,Xinran LIU1,Simeng LIU1
1. Key Laboratory of Road Construction Technology and Equipment of MOE, Chang'an University, Xi'an 710064, China
2. Viridi E-Mobility Technology (Ningbo) Limited Company, Ningbo 315000, China
3. Polar Krypton Automobile (Ningbo Hangzhou Bay New Area) Limited Company, Ningbo 315336, China
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摘要：

为了研究超声分散时间对形状记忆聚合物复合材料（SMPC）微观组织和形状记忆性能的影响，采用真空浸渗热压工艺制备6组不同超声分散时间的GO-CF混杂增强SMPC，通过扫描电子显微镜表征SMPC的微观组织形貌，开展形状记忆性能的测试. 结果表明，适当的超声分散时间可以将GO剥离成片状结构并均匀分散在SMPC中，形成机械联锁和化学键合. 随着超声分散时间的增加，SMPC的形状固定率和形状回复率呈现先增大后减小的趋势，除30 min外，其他SMPC的平均回复速率呈现先减小后增大的趋势，当超声分散60 min时，SMPC具有最佳的形状记忆性能，形状固定率和形状回复率分别达到97.85%和97.30%，最大回复力为10.47 N，平均形状回复速率为1.04°/s，机械联锁和化学键合这种复合结构的增加有利于增强SMPC的形状记忆性能，但需要更多的能量来实现SMPC的形状回复.
关键词： 超声分散时间;  真空浸渗热压工艺;  氧化石墨烯;  碳纤维;  形状记忆性能    
Abstract:

Six groups of GO-CF hybrid reinforced SMPC with different ultrasonic dispersion time were prepared by using vacuum infiltration hot pressing system in order to analyze the effect of ultrasonic dispersion time on the microstructure and shape memory performance of shape memory polymer composites (SMPC). The microstructure morphology of SMPC was characterized by scanning electron microscopy, and shape memory performance tests were conducted. Results show that appropriate ultrasonic dispersion time can peel GO into sheet-like structures and disperse uniformly in SMPC, forming mechanical interlocking and chemical bonding. The shape fixation ratio and shape recovery ratio of SMPC show a trend of first increasing and then decreasing with the increase of ultrasonic dispersion time. The mean recovery ratio of other SMPC shows a trend of first decreasing and then increasing except for 30 minutes. SMPC exhibits the best shape memory performance when the ultrasonic dispersion time is 60 minutes, with shape fixation ratio and shape recovery ratio reaching 97.85% and 97.30% respectively, maximum recovery force of 10.47 N, mean shape recovery ratio of 1.04°/s. The increase of this composite structure of mechanical interlocking and chemical bonding is beneficial to enhance the shape memory performance of SMPC, but more energy is required to achieve the shape recovery of SMPC.
Key words: ultrasonic dispersion time    vacuum infiltration hot pressing system    graphene oxide    carbon fiber    shape memory performance
收稿日期: 2023-09-14 出版日期: 2024-07-23
CLC:  TB 332  
基金资助: 公共大数据国家重点实验室开放基金资助项目（PBD 2022-019）；长安大学中央高校基本科研业务费专项资金资助项目（300102253105）；陕西省自然科学基础研究计划资助项目（2022JM-265）；教育部产学合作协同育人项目（220506298133407）；河南省高等学校重点科研项目计划资助项目（23A460033）.
通讯作者: 马玉钦     E-mail: chen-song@chd.edu.cn;yqma@chd.edu.cn
作者简介: 宋晨（2000—），男，硕士生，从事新型碳纤维复合材料制件成型工艺控制的研究. orcid.org/0009-0008-7021-115X. E-mail：chen-song@chd.edu.cn
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引用本文:

宋晨,马玉钦,阮鸥,徐津,刘欣然,刘思濛. 超声分散时间对GO-CF增强SMPC形状记忆性能的影响[J]. 浙江大学学报(工学版), 2024, 58(8): 1596-1603.

Chen SONG,Yuqin MA,Ou RUAN,Jin XU,Xinran LIU,Simeng LIU. Effect of ultrasonic dispersion time on shape memory performance of GO-CF reinforced SMPC. Journal of ZheJiang University (Engineering Science), 2024, 58(8): 1596-1603.

链接本文:

https://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2024.08.007    或    https://www.zjujournals.com/eng/CN/Y2024/V58/I8/1596

图 1  GO-CF混杂增强SMPC固定过程的示意图
图 2  GO-CF混杂增强SMPC回复过程的示意图
图 3  超声分散70 min的GO-CF混杂增强SMPC的微观形貌
图 4  不同超声分散时间的CF表面的微观组织形貌
图 5  机械联锁的示意图
图 6  不同超声分散时间的SMPC的形状固定率
图 7  不同超声分散时间的SMPC的形状回复率
图 8  超声分散30 min的试样分层裂纹产生与扩展图
图 9  复合材料的交联结构示意图
图 10  不同超声分散时间下复合材料的温度-回复力曲线
图 11  不同超声分散时间的SMPC的平均回复速率
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