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INORGANIC POLYMER MATRIX MATERIAL PROCESSING OPTIMIZATION

机译：无机聚合物基体材料加工优化

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摘要

Inorganic polymers have the potential to cross the process/performance gap that exists betweenrnpolymer matrix and ceramic matrix composites, enabling high temperature capable compositesrnthat are readily manufactured at relatively low temperatures. Unfortunately, process-inducedrnstresses in fiber reinforced inorganic polymer matrix composites often limit the mechanicalrnperformance. To gain a better understanding of the development of these residual stresses, therngeneration of shrinkage and the evolution of mechanical properties during the processing of thernneat inorganic polymer are investigated. Through a series of experiments, various stages of therncure process are evaluated. The results suggest that humidity control during the early lowrntemperature isothermal cure stage is critical to the final properties. Further, by optimizing thernlow temperature isothermal cure stage and subsequent drying and postcure, it has been found thatrnthe process-induced shrinkage can be reduced by as much as 20%, while simultaneously, therncompression strength can be improved by over 30% compared to baseline processing parameters.rnThus, it is demonstrated that, through process modification, a path exists to reduced residualrnstresses in continuous fiber reinforced, inorganic matrix composites.
机译：无机聚合物具有克服聚合物基体和陶瓷基体复合材料之间存在的工艺/性能差距的潜力，从而使得能够在相对较低的温度下容易制造的耐高温复合材料成为可能。不幸的是，纤维增强无机聚合物基复合材料的过程应力通常会限制机械性能。为了更好地了解这些残余应力的发展，研究了在无机无机聚合物加工过程中收缩的产生和机械性能的演变。通过一系列实验，评估了固化过程的各个阶段。结果表明，在低温等温固化早期阶段的湿度控制对于最终性能至关重要。此外，通过优化低温等温固化阶段以及随后的干燥和后固化，发现可以将过程引起的收缩降低多达20％，同时，与基准工艺相比，可以将抗压缩强度提高30％以上因此，证明了通过工艺改进，存在减少连续纤维增强无机基复合材料中残余应力的途径。

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  • 来源
    《SAMPE Tech 2013》|2013年|1-15|共15页
  • 会议地点 Wichita KS(US)
  • 作者

    Samsur Rahman; Donald W. Radford;

  • 作者单位

    Composite Materials, Manufacture and Structures LaboratoryColorado State UniversityFort Collins, CO 80523-1374;

    Composite Materials, Manufacture and Structures LaboratoryColorado State UniversityFort Collins, CO 80523-1374;

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