Concise and Efficient Self-Healing Cross-Linked Polyurethanes via the Blocking/Deblocking Reaction of Oxime Urethanes

doi:10.1021/acs.iecr.1c01446

	Concise and Efficient Self-Healing Cross-Linked Polyurethanes via the Blocking/Deblocking Reaction of Oxime Urethanes
	Xu, Bowen 2; Han, Feilong 2; Pei, Xuqiang 2; Zhang, Suojiang 1; Zhao, Jingbo 2
刊名	INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
	2021-08-04
卷号	60 期号:30 页码:11095-11105
ISSN号	0888-5885
DOI	10.1021/acs.iecr.1c01446
英文摘要	The development of self-healing polymers can extend the service life of polymer materials. However, it is still a challenge to prepare a polyurethane with high healing efficiency and maximum retention of the properties of polyurethane itself. In this research, we proposed a new scheme for the industrial production of self-healing polyurethane and successfully synthesized a self-healing polyurethane using diacetyl oxime as the chain extender and triethanolamine as the cross-linking agent. Oxime-blocked isocyanates deblock at a higher temperature and regenerate oxime urethanes at a lower temperature, thereby achieving thermal reversibility and self-healing due to the concise and efficient thermal reversible reaction of oxime urethanes. Fourier transform infrared and differential scanning calorimetry experiments confirmed that the oxime urethanes in the polyurethane deblock efficiently at around 90 degrees C and re-block after the temperature is lowered. The process can be cycled at least three times. Microscopic observation confirmed that the cracks disappeared within 60-90 min at 90 degrees C. The tensile test shows that the synthetic DiO-c-PU has a self-healing efficiency of over 94% at 90 degrees C for 1.5 h, which is more efficient. From the results, it appears that DiO-c-PU has good self-healing properties.
资助项目	Science Foundation of Aeronautics of China[201718S9001]
WOS关键词	DIELS-ALDER ; POLYMERS ; ELASTOMER
WOS研究方向	Engineering
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000683727000019
资助机构	Science Foundation of Aeronautics of China
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/49886]
专题	中国科学院过程工程研究所
通讯作者	Zhang, Suojiang; Zhao, Jingbo
作者单位	1.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China 2.Beijing Univ Chem Technol, Key Lab Carbon Fiber & Funct Polymers, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Xu, Bowen,Han, Feilong,Pei, Xuqiang,et al. Concise and Efficient Self-Healing Cross-Linked Polyurethanes via the Blocking/Deblocking Reaction of Oxime Urethanes[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2021,60(30):11095-11105.
APA	Xu, Bowen,Han, Feilong,Pei, Xuqiang,Zhang, Suojiang,&Zhao, Jingbo.(2021).Concise and Efficient Self-Healing Cross-Linked Polyurethanes via the Blocking/Deblocking Reaction of Oxime Urethanes.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,60(30),11095-11105.
MLA	Xu, Bowen,et al."Concise and Efficient Self-Healing Cross-Linked Polyurethanes via the Blocking/Deblocking Reaction of Oxime Urethanes".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 60.30(2021):11095-11105.