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A New Process for Manufacturing Biocomposite Laminate and Sandwich Parts using Mycelium as a Binder

机译:以菌丝体为粘合剂制造生物复合材料层压板和三明治零件的新工艺

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This paper describes research related to manufacturing of composite parts and resin infusionrnpreforms with new materials based on a fungal mycelium-based binder developed and patentedrnby Ecovative Design, LLC (Green Island, NY). Mycelium, the vegetative part of a fungus, actsrnlike a natural, self-assembling glue that digests and binds securely to natural reinforcementrnmaterials and agricultural byproducts with essentially no added energy. Laminate structures canrnconsist of natural reinforcement layers (e.g., jute textile, kenaf mat) bound by mycelium, whilernsandwich structures have laminate skins and core made of agricultural byproducts (e.g., groundrncorn stover) all bound with together with mycelium. These structures can be used as is or asrnpreforms for infusion with natural resin (e.g., epoxidized linseed oil) to significantly increasernstrength and stiffness.rnA new manufacturing system concept for mycelium-based biocomposite laminate andrnsandwich structures is proposed. The process steps include: (1) cutting natural fiberrnreinforcement in textile or mat form to the desired ply shape; (2) pre-impregnating each ply withrna natural glue; (3) using heated match tools to form, sterilize, and solidify flat stacks ofrnpre-impregnated plies into integral tooling; (4) filling integral tooling (thereby eliminating thernneed for dedicated molds) with agricultural waste pre-colonized with mycelium; (5) allowing therngrowing mycelium to bind together and grow into all constituent components under the rightrnconditions to form a completely unitized sandwich preform or part; (6) drying and inactivatingrn(killing) live mycelium in the mycelium-bound structure; and (7) infusing natural resin into thernreinforcement skins followed by resin curing if higher part stiffness is required. Proof ofrnconcept and process optimization for Steps 1-3 is demonstrated for a shoe-shaped part inrnpreparation for production scale-up.
机译:本文介绍了与新材料制造复合零件和树脂灌注瓶坯相关的研究,该材料基于真菌菌丝基粘合剂,并由Ecovative Design,LLC(纽约州绿岛)开发并获得了专利。菌丝体是真菌的营养部分,其作用类似于天然的自组装胶,可在不增加能量的情况下将天然增强材料和农业副产品牢固地消化并结合。层压结构可以由被菌丝体结合的天然增强层(例如,黄麻纺织品,洋麻垫)组成,而三明治结构具有层压的表皮和由农业副产品制成的芯(例如,磨碎的玉米秸秆)与菌丝体结合在一起。这些结构既可以原样使用,也可以作为预制件用于天然树脂(例如环氧化亚麻籽油)的输注,以显着提高强度和刚度。提出了一种新型的基于菌丝体的生物复合材料层压材料和三明治结构的制造系统概念。该工艺步骤包括:(1)将织物或垫子形式的天然纤维增强物切割成所需的帘布层形状; (2)用天然胶预先浸渍每层; (3)使用加热的火柴工具将预浸渍板的扁平叠层成型,灭菌和固化成一体的模具; (4)用菌丝预先定殖的农业废弃物填充整体工具(从而消除专用模具的需要); (5)允许生长的菌丝体在适当的条件下结合在一起并生长成所有组成成分,从而形成一个完全统一的三明治预成型坯或零件; (6)干燥并灭活结合在菌丝体中的活菌丝; (7)如果需要更高的零件刚度,则将天然树脂注入增强蒙皮,然后进行树脂固化。演示了步骤1-3的概念验证和工艺优化,用于鞋形零件的制备以扩大生产规模。

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