聚氨酯叶片时代即将到来

Date: 2017-11-08
Views: 36

    北极星风力发电网讯:树脂材料是决定风电机组叶片性能的关键因素,很多企业都将材料的创新作为突破点,科思创便是其中一员,其首支聚氨酯树脂风电机组叶片的问世,为叶片的设计带来了新思路。


聚氨酯叶片时代即将到来


    2016年4月,科思创在中国成功试制了全球第一支聚氨酯叶片,这一科研成果得到了风能和复合材料行业的广泛认可;9月,该聚氨酯叶片项目荣获第22届中国复材展-JEC创新产品奖,这对聚氨酯在风能应用的创新得到了肯定。

    

    聚氨酯树脂体系主要应用于真空灌注工艺生产大型风电机组叶片。与传统的环氧树脂体系相比,聚氨酯树脂体系强度更高,综合力学性能提高10%以上,部分性能指标提高30%,为优化叶片设计提供可能。聚氨酯树脂和玻璃纤维有非常好的浸润性和界面结合力,其基体(浇注体)力学性能和玻璃纤维复合材料(FRP)力学性能均较环氧体系更为优越。同时,聚氨酯树脂粘度低和流动性能好,因而能提高灌注速度,缩短灌注时间,而且对PVC等泡沫材料更友好,避免了芯材过热变色等缺陷。科思创聚氨酯事业部亚太区研发总监李倩博士介绍道:“其固化时间也更短,且不需要后固化,这也进一步缩短了生产周期。通过提高叶片生产效率、缩短生产工时、降低能耗和模具的费用,聚氨酯树脂为制造企业大大节省了生产成本。”

    

    凭借一系列性能上的优势,聚氨酯使得制造更轻更强的叶片成为可能。更轻质、更高效的叶片可显著减少对风力发电机组轮毂部件和塔架结构的需求,从而降低风机的整体投资和运营成本。为满足新一轮风电机组叶片轻量化技术要求,今年9月,中车株洲所旗下时代新材公司新研制的第一支2.2兆瓦新型高性能聚氨酯树脂体系叶片在株洲光明工厂下线。


    风电机组叶片测试是确保叶片长期可靠运行的关键。据李倩博士向记者介绍,聚氨酯灌注树脂已获得德国DNV GL认证,今年,在使用聚氨酯灌注主梁和腹板的2MW叶型上,叶片又成功通过了在北京鉴衡认证中心进行的静力和疲劳测试。此次通过测试的风电机组叶片长度为55.2米,其大梁和腹板采用科思创的新型聚氨酯灌注树脂和重庆国际复合材料有限公司的TM+ 玻璃纤维制成,叶片的其他部分仍然使用环氧树脂制造。李倩博士谈到:“测试结果表明,聚氨酯树脂可以达到严格的行业标准,满足叶片在恶劣条件下的长期使用要求,同时也充分证明,聚氨酯与环氧树脂之间有着很强的界面结合力。”


    一种创新材料要替代传统材料,不是简单的替代,而是与其他材料以及产业链上下游的密切配合,需要经历时间的不断检验。关于未来发展,李倩博士谈到:“科思创将创新作为企业文化的基础,一直在不断寻找新的解决方案、材料和制作工艺。”科思创作为聚氨酯风能应用领域的先驱,为风电企业提供一种新的选择,为加速实现更清洁更低碳的社会、推动风能行业的可持续发展做出贡献。我们期待科思创在叶片的新时代开创更多精彩。


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