Structure and properties of rare earth strontium aluminate polypropylene luminous fiber

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Abstract Rare earth strontium aluminate luminescent polymer composites are currently the most widely used luminescent materials. They can be used to prepare marine luminescent fibers and are expected to solve the problems of underwater operations in deep sea and dark conditions. In this study, rare earth strontium aluminate luminescent materials (SrAl₂O₄:Eu²⁺, Dy³⁺) were mixed with thermoplastic elastomer PP, and then blended by a screw extrusion spinning machine to prepare SrAl₂O₄:Eu²⁺ with Dy³⁺ content of 2%, 5%, 10% and 15% polypropylene luminous fiber. In this paper, the effects of different contents of rare earth strontium aluminate on the crystallization, fluorescence and mechanical properties of luminous fibers were studied. The results show that the addition of rare earth strontium aluminate does not destroy the crystal structure of PP, and plays a role in heterogeneous nucleation, and as its content increased, the role of heterogeneous nucleation become more and more obvious; when the content of rare earth strontium aluminate is 5%, the melting enthalpy and crystallinity are the largest; the higher the content of rare earth strontium aluminate, the better the light-absorbing energy storage effect and the greater the luminous intensity; the tensile breaking strength of luminous fiber gradually decreases with the increase of the content of rare earth strontium aluminate, the elongation at break has a maximum value when its content is 5%.

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	CUI Ning
	QU Jin
	QI Peiyao
	XIE Jianhui
	LIU Zongbao
	HU Shaofeng
	LI Ang
	LIU Xiaofei

Keywords： rare earth strontium aluminate polypropylene luminous fiber structure performance

Received 2021-06-29;

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CUI Ning, QU Jin, QI Peiyao, XIE Jianhui, LIU Zongbao, HU Shaofeng, LI Ang, LIU Xiaofei.Structure and properties of rare earth strontium aluminate polypropylene luminous fiber[J] Chemcial Industry and Engineering, 2022,V39(6): 69-74

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