玻纤增强甲基丙烯酸酯基UV-CIPP材料抗弯性能及失效分析

doi:10.11896/cldb.22060190

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Abstract Ultraviolet curable in-place pipe (UV-CIPP) is a glass fiber composite material. Its flexural performance is an important reference index necessary to evaluate the effectiveness of pipeline rehabilitation and material optimization design. The flexural performance and failure mechanism of glass fiber-reinforced methacrylate-based UV-CIPP materials were investigated based on a three-point bending test that incorporated HD video and SEM observations, and accounted for the effects of curing time, curing distance, UV lamp power, and material thickness. Failure of glass fiber-reinforced methacrylate-based UV-CIPP materials was divided into three stages:elastic deformation, matrix cracking, and glass fiber fracture. Matrix cracking, debonding delamination, and fiber pull-out fracture caused bending failures in this material. Under the influence of a single variable, the flexural strength and flexural modulus of UV-CIPP materials firstly increased and then decreased with additional curing time, curing distance, and UV lamp power, but gradually decreased with increased material thickness. This study provides a reference basis for optimal UV-CIPP material design while laying an important foundation to develop of domestic UV-CIPP materials.

Key words： ultraviolet cured-in-place pipe materials three-point bending test HD video SEM curing parameters material thickness

Published: 25 June 2024 Online: 2024-07-17

CLC number:

TU599

Fund:National Natural Science Foundation of China (52178368, 51909242, 52009125), the Program for Science and Technology Innovation Teams and Talents in Universities of Henan Province (23IRTSTHN004, 23HASTIT007), the China Postdoctoral Science Foundation (2021T140619, 2021M692939), the Key Project of Natural Science Foundation of Henan Province (232300421137), the Postdoctoral Research Project Startup Grant in Henan Province (202001016), and the First-class Project Special Funding of Yellow River Laboratory (Zhengzhou University) (YRL22LT07).

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	Articles by authors
	XIA Yangyang
	FANG Hongyuan
	ZHANG Chao
	WANG Cuixia
	SHI Mingsheng

Cite this article:

XIA Yangyang,FANG Hongyuan,ZHANG Chao, et al. Analysis of Flexural Performance and Failure of Glass Fiber Reinforced Methacrylate-based Ultraviolet Cured-in-Place Pipe Materials[J]. Materials Reports, 2024, 38(12): 22060190-7.

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http://www.mater-rep.com/EN/10.11896/cldb.22060190 OR http://www.mater-rep.com/EN/Y2024/V38/I12/22060190

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