稀土铝酸锶聚丙烯夜光纤维的结构与性能

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摘要稀土铝酸锶发光聚合物复合材料是目前应用最广泛的发光材料，可用于制备海洋用夜光纤维，有望解决深海、黑暗条件的水下作业难题。将稀土铝酸锶发光材料（SrAl₂O₄：Eu²⁺，Dy³⁺）与热塑性弹性体PP进行混合，再通过螺杆挤出纺丝机制备了SrAl₂O₄：Eu²⁺，Dy³⁺质量分数为2%、5%、10%和15%的聚丙烯夜光纤维。研究了不同质量分数的稀土铝酸锶对夜光纤维的结晶性能、荧光性能以及力学性能的影响。结果表明，稀土铝酸锶的加入没有破坏PP的晶体结构，并起到了异相成核的作用，且随着其质量分数增加，异相成核的作用越来越明显；当稀土铝酸锶质量分数为5%时，熔融焓与结晶度最大；稀土铝酸锶的质量分数越高，吸光储能效果越好，发光强度也就越大；夜光纤维的拉伸断裂强度随稀土铝酸锶质量分数的增加而逐渐降低，断裂伸长率在其质量分数为5%时出现最大值。

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	崔宁
	瞿瑾
	戚佩瑶
	谢锏辉
	刘宗保
	胡绍峰
	李昂
	刘晓非

关键词：稀土铝酸锶聚丙烯夜光纤维结构性能

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%.

Keywords： rare earth strontium aluminate polypropylene luminous fiber structure performance

Received 2021-06-29;

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Corresponding Authors: 刘晓非,教授,E-mail:liuxf315@qq.com。 Email: liuxf315@qq.com

About author: 崔宁(1986-),男,高级工程师。现从事海洋石油工程设计及施工技术研究。

引用本文:

崔宁, 瞿瑾, 戚佩瑶, 谢锏辉, 刘宗保, 胡绍峰, 李昂, 刘晓非.稀土铝酸锶聚丙烯夜光纤维的结构与性能[J]. 化学工业与工程, 2022,39(6): 69-74

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, 2022,39(6): 69-74

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