摘要
采用联苯结构的生物质原料厚朴酚合成生物基环氧树脂,以柔性聚醚胺固化剂(D230、D400、D2000及T403)进行固化制备生物基环氧抗冲蚀涂层,探究聚醚胺分子量与官能度对厚朴酚环氧树脂力学性能、防腐性能以及抗冲蚀防护性能的影响,阐述厚朴酚环氧涂层抗冲蚀磨损机理。结果表明:D230固化的厚朴酚环氧涂层在3.5%(质量分数)NaCl溶液中浸泡15 d后仍具有较高的阻抗值(1.25×10^(11)Ω·cm^(2));以T403固化可获得高拉伸强度(26.59 MPa)、低摩擦系数(0.373)和磨损率[0.0183 mm^(3)/(N·m)]涂层;D2000固化的厚朴酚环氧涂层在抗冲蚀测试中表现出较低质量损失(244.74 mg)与体积损失(157 mm^(3))。在固/液/气三相流冲蚀作用下,D2000较长的柔性链段,赋予厚朴酚环氧涂层更好的弹性和柔韧性,降低了冲蚀介质的冲击作用,从而表现出优异的抗冲蚀性能。
The biomass raw material magnolol with a biphenyl structure was used to synthesize bio-based epoxy resin,and flexible polyetheram-ine curing agents(D230,D400,D2000 and T403)were used to cure the bio-based epoxy anti-erosion coating.The effects of polyetheramine mo-lecular weight and functionality on the mechanical properties,corrosion resistance and anti-erosion protection performance of magnolol epoxy resin were explored,and the anti-erosion mechanism of magnolol epoxy coatings was proposed.Results showed that the magnolol epoxy coating cured with D230 maintained a high impedance value(1.25×10^(11)Ω·cm^(2))after 15 d of immersion in 3.5%(mass fraction)NaCl solution.The coating cured with T403 possessed a high tensile strength(26.59 MPa),low friction coefficient(0.373)and wear rate[0.0183 mm^(3)/(N·m)],while the magnolol epoxy coating cured with D2000 exhibited lower mass loss(244.74 mg)and volume loss(157 mm^(3))in the erosion test.Under the coupled erosion of solid/liquid/gas three-phase flow,the longer flexible segment of D2000 endowed the magnolol epoxy coating with better elas-ticity and flexibility,and therefore reduced the impact of the erosion medium,thus showing excellent anti-erosion performance.
作者
李柱
黄橹
韩飞
安然
郭小平
刘栓
LI Zhu;HUANG Lu;HAN Fei;AN Ran;GUO Xiaoping;LIU Shuan(School of Materials Science and Chemical Engineering,Ningbo University,Ningbo 315211,China;Key Laboratory of Marine Materials and Related Technologies,Zhejiang Key Laboratory of Marine Materials and Protective Technologies,Ningbo Institute of Materials Technology and Engineering,Chinese Academy of Sciences,Ningbo 315201,China;Hangzhou Benchuang Technology Co.,Ltd.,Hangzhou 310030,China)
出处
《材料保护》
CAS
CSCD
2024年第3期70-79,97,共11页
Materials Protection
基金
国家重点研发计划项目(2023YFC2809901)
杭州本创科技公司科技项目
中科院海洋新材料与应用技术重点实验室开放课题。
关键词
厚朴酚环氧树脂
聚醚胺固化剂
力学性能
抗冲蚀防护性能
thickened magnolol epoxy resin
polyether amine curing agents
mechanical properties
anti-erosion protection performance
