Preparation and mechanical properties of poly (urea-formaldehyde) microcapsules containing liquid polysulfide

doi:10.1080/00218464.2020.1723553

CORC > 金属研究所 > 中国科学院金属研究所

	Preparation and mechanical properties of poly (urea-formaldehyde) microcapsules containing liquid polysulfide
	Wang, Xuan 1; Mu, Xianlian 2; Wang, Haowei 2; Liao, Shengzhi 2; Yang, Huaiyu 1
刊名	JOURNAL OF ADHESION
	2020-02-08
页码	19
关键词	Liquid polysulfide microcapsules poly (urea-formaldehyde) rubbers mechanical properties of adhesives microscopy
ISSN号	0021-8464
DOI	10.1080/00218464.2020.1723553
通讯作者	Yang, Huaiyu(hyyang@imr.ac.cn)
英文摘要	In this paper, we first report the preparation of poly (urea-formaldehyde) (UF) microcapsules filled with liquid polysulfide by one-step in situ polymerization. For obtaining the optimal preparation condition, the influences of various process factors including emulsifier type and its usage, initial pH value of the solution, reaction temperature and time on the dispersion, and encapsulation effects of liquid polysulfide were experimentally investigated. The structure and morphology of the prepared microcapsules were characterized by Fourier-transform infrared spectroscopy, optical microscopy, and scanning electron microscopy, respectively. The relative content of liquid polysulfide in microcapsules was determined using ultraviolet spectrum method. Furthermore, the mechanical properties of cured liquid polysulfide films before and after encapsulation were measured according to the relative standards. Results indicated that the liquid polysulfide was successfully encapsulated in UF microcapsules, which had a well-defined spherical shape, a continuous inner shell wall, a rough exterior surface, and an average diameter of about 200 mu m. The breakaway, disassembly torques, tensile strength, and hardness of microcapsule sealant were greatly improved in comparison with those of unencapsulated one. The study provides a valuable support for the automatic pre-coating technology of polysulfide sealants in the future.
资助项目	Ministry of Industry and Information Technology of the People's Republic of China[MJ-2014-F-14]
WOS研究方向	Engineering ; Materials Science ; Mechanics
语种	英语
出版者	TAYLOR & FRANCIS LTD
WOS记录号	WOS:000512945200001
资助机构	Ministry of Industry and Information Technology of the People's Republic of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/137089]
专题	金属研究所_中国科学院金属研究所
通讯作者	Yang, Huaiyu
作者单位	1.Chinese Acad Sci, Inst Met Res, Lab Met Corros & Protect, Shenyang 110016, Peoples R China 2.China Special Vehicle Res Inst, Aviat Key Lab Sci & Technol Struct Corros Protect, Jingmen, Hubei, Peoples R China
推荐引用方式 GB/T 7714	Wang, Xuan,Mu, Xianlian,Wang, Haowei,et al. Preparation and mechanical properties of poly (urea-formaldehyde) microcapsules containing liquid polysulfide[J]. JOURNAL OF ADHESION,2020:19.
APA	Wang, Xuan,Mu, Xianlian,Wang, Haowei,Liao, Shengzhi,&Yang, Huaiyu.(2020).Preparation and mechanical properties of poly (urea-formaldehyde) microcapsules containing liquid polysulfide.JOURNAL OF ADHESION,19.
MLA	Wang, Xuan,et al."Preparation and mechanical properties of poly (urea-formaldehyde) microcapsules containing liquid polysulfide".JOURNAL OF ADHESION (2020):19.