粘结涂层对拉挤碳纤维增强塑料板湿热老化性能的影响

Effects of Adhesive Coating on the Hygrothermal Aging Performance of Pultruded CFRP Plates.

作者信息

Hao Xinkai, Xian Guijun, Huang Xiangyu, Xin Meiyin, Shen Haijuan

机构信息

Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education, Harbin Institute of Technology, Harbin 150090, China.

Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters of the Ministry of Industry and Information Technology, Harbin Institute of Technology, Harbin 150090, China.

出版信息

Polymers (Basel). 2020 Feb 23;12(2):491. doi: 10.3390/polym12020491.

DOI:10.3390/polym12020491

PMID:32102258

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7077647/

Abstract

Bonding of carbon fiber reinforced polymer (CFRP) plates to a concrete member is a widely used strengthening method. CFRP plates used in construction degrade due to harsh environmental conditions such as high temperature or alkaline solution seepage from concrete. However, the adhesive between CFRP plates and concrete may have a positive effect on the durability performance of CFRP plates. In this paper, the long-term performance of both naked and adhesive coated CFRP pultruded plates subjected to different-temperature water or alkaline solution (20, 40 and 60 °C) are investigated to evaluate the protective effect of adhesive on CFRP plates. It is found that the adhesive coating can slow the deterioration of mechanical properties especially the tensile properties and fiber-matrix interfacial properties. The water absorption mechanism of CFRP plates was also investigated.

摘要

将碳纤维增强聚合物（CFRP）板粘结到混凝土构件上是一种广泛使用的加固方法。建筑中使用的CFRP板会因高温或混凝土中碱性溶液渗漏等恶劣环境条件而降解。然而，CFRP板与混凝土之间的胶粘剂可能会对CFRP板的耐久性产生积极影响。本文研究了裸露的和涂有胶粘剂的CFRP拉挤板在不同温度的水或碱性溶液（20、40和60°C）作用下的长期性能，以评估胶粘剂对CFRP板的保护作用。研究发现，胶粘剂涂层可以减缓力学性能尤其是拉伸性能和纤维-基体界面性能的劣化。还研究了CFRP板的吸水机理。