SHIELD - Sustainable High Energy Absorbing Lightweight Material Development

该项目旨在开发新一代可持续、可回收的轻质材料，在动态冲击和冲击/爆炸载荷下提供显著改善的能量吸收和减震能力，并降低经济成本。还将开发采用新型材料的结构部件的设计和制造方法，从而提高一系列部门的安全和保护。所提出的材料是一种复合泡沫，基于分散在可回收和/或生物基聚合物基质中的多孔性可回收玻璃颗粒的随机分散。重点将是开发一种完全可回收和可回收的材料。为了优化材料性能，特别是能量吸收，将在方案的材料设计阶段开发和使用新的多尺度材料模型(使用显式有限元方法)。这将得到速率相关特性和失效机制的实验表征的支持。将开发一种新的软加工技术，以避免对玻璃颗粒的损害和聚合物的降解。还将开发多材料夹层结构，包括可回收的复合泡沫核心和玻璃增强热塑性复合材料皮肤，同样以完全可回收为目标。与工业合作伙伴一起，还将调查爆炸防护、汽车、铁路、基础设施和航空航天领域的应用。

This project aims to develop a new generation of sustainable, recyclable lightweight materials which will offer significantly improved energy absorption and shock mitigation capabilities under dynamic impact and shock/blast loading at reduced economic cost. Methods of designing and manufacturing structural components, incorporating the novel material, will also be developed, leading to improved safety and protection in a range of sectors. The proposed material is a syntactic foam based on a stochastic dispersion of porous recycled glass particles dispersed in a recycled and/or bio-based polymer matrix. The focus will be on developing a fully recycled and recyclable material. To optimise materials performance, particularly energy absorption, novel multi-scale materials models (using explicit FEA methods) will be developed and used during the materials design stage of the programme. This will be supported by experimental characterisation of rate dependent properties and failure mechanisms. A new soft processing technique will be developed that avoids damage to the glass particles and degradation of the polymer. Multi-material sandwich structures, comprising the recyclable syntactic foam core and glass-reinforced thermoplastic composite skins, will also be developed, again with full recyclability being a goal. With industrial partners, applications in blast protection, automotive, rail, infrastructure and aerospace sectors will also be investigated.