泡沫芯材在风电叶片中的研究及应用进展  

Research and application progress of foam core materials in wind turbine blade

作　　者：李沛欣 周高飞 周文明 冯永国 Li Peixin;Zhou Gaofei;Zhou Wenming;Feng Yongguo(Guodian United Power Co.,Ltd.,Beijing 100039,China)

机构地区：[1]国电联合动力技术有限公司,北京100039

出　　处：《中国胶粘剂》2022年第12期58-64,共7页China Adhesives

基　　金：国家能源集团联合动力技术有限公司项目(LHDL-2021-10)。

摘　　要：通过对比几种泡沫芯材在风电叶片中应用进展,提出从不同方面来替代传统聚氯乙烯(PVC)泡沫的可能性。研究发现:聚对苯二甲酸乙二醇酯(PET)泡沫芯材由于其具有可循环利用、力学性能优异、耐高温、耐疲劳性能好以及价格较低等优势,可以在叶片壳体和腹板中替代PVC泡沫;聚苯乙烯(PS)泡沫材料具有优异的剪切应变特性,可用于叶片的剪切腹板;聚甲基丙烯酰亚胺(PMI)在确保性能前提下,可以通过共混、共聚等方式复合发泡,降低材料成本;聚氨酯(PU)泡沫具有一定的柔韧性,通过提升制造工艺性,特定的PU芯材可以在叶片的长度和宽度方向上改善其剪切性能。在未来的大兆瓦级叶片设计中,可以通过结合不同种类芯材的优势,有效减轻叶片重量,降低树脂和胶粘剂用量,避免泡沫因应力集中过大而被破坏,确保壳体的刚度满足性能要求。By comparing the application progress of several foam core materials in wind turbine blade,the possibility of replacing traditional polyvinyl chloride(PVC)foam from different aspects was proposed.The research showed that polyethylene terephthalate(PET)foam core material could replace PVC foam in blade shell and web due to its advantages of recyclability,excellent mechanical properties,high temperature resistance,good fatigue resistance and lower price.Polystyrene(PS)foam material,with excellent shear strain characteristics,could be used in shear web of the blade.Polymethacrylimide(PMI)could be compounded and foamed by blending and copolymerization to reduce material cost under the premise of ensuring performance.Polyurethane(PU)foam had a certain flexibility,and by improving the manufacturing process,specific PU core material could improve its shear performance in the length and width direction of the blade.In the future design of large megawatt-class blade,the blade weight could be effectively reduced by combining the advantages of different kinds of core materials,reducing the amount of resin and adhesive,avoiding the destruction of the foam due to excessive stress concentration,and ensuring that the rigidity of shell met the performance requirements.

关 键 词：风电 泡沫芯材 压缩 剪切 破坏应变 

分 类 号：TQ328[化学工程—合成树脂塑料工业]