Non-Polluting Composites Repair and Remanufacturing for Military Applications: Co-Injection Resin Transfer Molding
作者： Bruce K. Fink , John W. Gillespie
DOI:
关键词: Composite material 、 Transfer molding 、 Adhesive 、 Flammability 、 Materials science 、 Compression molding 、 Polyurethane 、 Epoxy 、 Damage tolerance 、 Composite number
摘要: Abstract : Vacuum-assisted resin transfer molding (VARTM) processes have been proven to be cost-effective manufacturing techniques for large composite structures. However, their use has limited single systems. A variety of structures requires multiple resins serve different purposes while being integrated into a structure. Significant environmental cost savings are possible by replacing currently practiced sequential repair and with reduced-step co-cure enabled the co-injection (CIRTM) variant VARTM process. The CIRIM process was investigated manufacture two dual-layered commonly required in Department Defense (DoD) first consists vinyl-ester layer structural integrity phenolic flammability, smoke, toxicity (FST) protection. second epoxy polyurethane improved damage tolerance. In each case, simultaneously injected mold filled stationary fiber bed co-cured. Resin separation is maintained 1-mil-thick polysulfone film sandwiched between layers 6.5-mil-thick adhesive. Various tests performed demonstrate mechanical, thermal, rate-dependent performance
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