摘要
为了改善水性环氧树脂(Water-borne epoxy,WEP)的力学性能及丰富其驱动形式,首先合成了具有优异的光热性能的聚多巴胺(Polydopamine,PDA)纳米颗粒,然后将其添加到WEP基体中,制备PDA/WEP形状记忆复合材料,并通过一系列表征方法进行表征。结果表明:PDA纳米颗粒的添加能改善复合材料的力学强度,纯WEP的断裂强度为8.8 MPa,0.1 wt%PDA/WEP的断裂强度较纯WEP有明显的提高;PDA的加入赋予WEP光驱动性能,即使PDA含量仅为0.1 wt%,在808 nm的近红外光照射下,PDA/WEP复合材料的温度能在30 s内由室温(25℃)上升到104℃,且形状回复能在13 s内迅速完成,复合材料形状回复时间随PDA纳米颗粒含量增加而缩短。由于PDA纳米颗粒制备方法简单环保,且光热转换性能优异,具有作为功能填料制备光驱形状记忆聚合物复合材料的潜力。
In order to improve the mechanical propertyof WEP(water-borne epoxy)and enrich its driving mode,polydopamine(PDA)nanoparticles with excellent photothermal properties were synthesized and then added to the WEP matrix to prepare PDA/WEP shape memory composites.The PDA/WEP composites were characterized by a series of methods.The results showed that:PDA nanoparticles could improve the mechanical properties of the composite.The breaking strength of pure WEP was 8.8 MPa,and the breaking strength of 0.1 wt%PDA/WEP was obviously higher than that of pure WEP.The addition of PDA endowed WEP the light-driven property.Even when the PDA content was 0.1 wt%,the temperature of PDA/WEP composite could rise from 25℃to 104℃in 30 s under 808 nm NIR light,and the shape recovery could be completed within 13 s.Furthermore,the shape recovery time of the composite was shortened as the PDA content increased.Since the preparation method of the PDA nanoparticle is simple and environmentally friendly,and it has excellent photothermal conversion performance,it can be used as a functional filler to obtain a light-driven shape memory polymer composite.
作者
吴杨龙
董余兵
傅雅琴
WU Yanglong;DONG Yubing;FU Yaqin(Silk Institute,College of Materials and Textiles,Zhejiang Sci-Tech University,Hangzhou 310018,China)
出处
《浙江理工大学学报（自然科学版）》
2020年第2期173-181,共9页
Journal of Zhejiang Sci-Tech University(Natural Sciences)
基金
国家自然科学基金项目(51703204)
浙江省自然科学基金项目(LY19E030010)。
关键词
聚多巴胺
环氧树脂
形状记忆复合材料
近红外光
光热转换
polydopamine
epoxy resin
shape memory composite
near-infrared light
photothermal conversion
