Predictive Modelling of Combustion-Induced Mechanical Property Degradation of Flame-Retardant Structural Composites

这项建议涉及对阻燃玻璃纤维增强塑料层压板的燃烧和机械性能退化的数学模拟。在博尔顿，在早期的EPSRC项目中，已经开发了新型阻燃层压板并获得了专利。这些层压板含有新型阻燃化学品和固有的阻燃纤维素纤维，作为树脂基质中的添加剂或作为额外的布料层。一些层压板还含有聚合物层状硅酸盐纳米复合材料，可添加或不添加常规阻燃剂。与未改性层压板相比，层压板在火/热暴露后表现出更好的阻燃性能和残余力学性能。这项提议是博尔顿研究所的耐火和耐热材料研究小组和曼彻斯特大学的火灾工程研究小组联合尝试的，目的是对它们在火灾条件下的燃烧和机械行为进行数值预测。博尔顿球队将专注于燃烧方面，而曼彻斯特球队将专注于燃烧导致的机械性能退化。博尔顿团队的结果将为曼彻斯特团队提供材料损坏和温度信息的输入，因此该项目的结果将是一个结合燃烧和燃烧诱导的力学行为的综合预测模型。将在高温下进行有限数量的力学试验，为所开发的数值模型的验证提供数据。

This proposal involves mathematical modelling of the burning and degradation of mechanical properties of flame retadant glass fibre reinforced plastic laminates. At Bolton, novel flame - retardant laminates have been developed and patented during an earlier EPSRC project. These laminates contain novel flame retardant chemicals and inherently flame retardant cellulosic fibres as additives in the resin matrix or as additional fabric layer. Some laminates also contain polymer layered silicate nanocomposites with or without conventional flame retardants. The laminates show improved flame reatrdant and residual mechanical properties after fire/heat exposure compared to unmodified laminates. This proposal is a joint attempt by 'Fire and Heat Resistant Materials' group at Bolton Institute and 'Fire Engineering Research Group' at University of Manchester to numerically predict their burning and mechanical behaviour under a fire condition. The Bolton team will focus on the burning aspect and the Manchester team the burning induced degradation of mechanical properties. Results from the Bolton team will provide input of material damage and temperature information to the Manchester team so that the outcome of this project will be an integrated predictive model for combining both burning and burning-induced mechanical behaviour. A limited amount of mechanical tests at elevated temperatures will be carried out to provide data for validation of the numerical models developed.