Development of composites with waste plastics and waste glass fibres

废塑料与废玻璃纤维复合材料的开发

• 批准号: 2464884
• 金额: --
• 依托单位: University of Edinburgh
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2020
• 资助国家: 英国
• 起止时间: 2020 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2464884
• 关键词: Development; composites; waste; plastics; glass

Finding value-added uses for post-consumer waste plastic is a very important task. 95% of plastic packaging material value worldwide is lost via single use. Of the 6.8 million tonnes of plastic packaging waste generated in the EU annually, 6.75% is reused or recycled. Several barriers exist, limiting recycling capacity of plastic packaging waste within the UK e.g. 30% of plastic packaging waste is mixed plastic packaging requiring pre-treatment before recycling. Current processes for sorting and cleaning waste plastic are labour-intensive and expensive, failing to capture the economic benefit of this resource.The project will investigate a novel manufacturing process, utilising mixed plastic packaging waste as a raw material to manufacture upcycled composite products. The project will study the inherent issues in the plastics recycling industry, where 95% of plastic packaging material value is lost to the economy after a very short first-use cycle. This waste can be a valuable potential resource of reusable or recyclable materials, estimated to be worth around £18bn to the UK economy and using this material will divert large volumes of recyclable plastics from landfill and incineration.Industry sponsor Johns Manville https://www.jm.com/ sends thousands of tonnes of waste glass fibre to landfill annually. The possibilities of developing new circular economy processes to produce value-added products from waste glass-fibre and mixed plastic packaging waste will be investigated.The overarching objectives of the project are:- Understand the technical variabilities and challenges associated with mixed plastic wastes and waste glass fibres- Enhance the chemical compatibility between different types of plastic wastes- Investigate and enhance interfacial bonding with the waste glass fibres- Study their processing characteristics- Investigate mechanical and microstructural propertiesThe issues arising from the variability of plastic waste characteristics, which may affect material properties and production process performance will be investigated. The proposal will measure and generate a technical database of the recycled plastic properties and investigate pathways to control material properties. Physical characterisation of the waste plastic materials will be carried out to establish the degree of flow and mixing, melting and glass transition temperatures, infiltration of dry glass fabrics, void content and Izod impact properties.A new patented Enclosed Pressure Moulding (EPM) technology (PALTECH https://paltech.ie/) will possibly be used in this project, in combination with waste glass fibre supplied by Johns Manville. Optimisation of the processing parameters will be carried out to achieve the best properties of recycled mixed plastics and waste glass fibres.Characterisation and optimisation of polymer alloy and fibre-matrix interfaces will be performed. Fire testing will be performed to investigate its suitability in various industries. Optical microscopy, Scanning electron microscopy (SEM), SEM-EDX (Energy Dispersive x-ray), Dynamic mechanical analysis (DMA), Differential scanning calorimetry (DSC), Raman and FTIR spectroscopy, will be used. Izod impact strength will be measured. These will be carried out in consultation with Johns Manville and their test facility will be used for advanced characterisation.

寻找消费后废塑料的增值用途是一项非常重要的任务。全球95%的塑料包装材料价值因一次性使用而损失。在欧盟每年产生的680万吨塑料包装废物中，有6.75%被重复使用或回收。存在几个障碍，限制了英国塑料包装废物的回收能力，例如30%的塑料包装废物是混合塑料包装，需要在回收前进行预处理。目前的废塑料分类和清洁工艺劳动密集且成本高昂，未能充分利用这一资源的经济效益。该项目将研究一种新的制造工艺，利用混合塑料包装废物作为原材料，制造升级回收的复合材料产品。该项目将研究塑料回收行业的固有问题，其中95%的塑料包装材料价值在非常短的首次使用周期后损失。这些废弃物可能是可重复使用或可回收材料的宝贵潜在资源，估计对英国经济的价值约为180亿英镑，使用这种材料将从垃圾填埋场和焚烧中转移大量可回收塑料。行业赞助商Johns Manville https://www.jm.com/每年将数千吨废弃玻璃纤维送往垃圾填埋场。将研究开发新的循环经济工艺的可能性，以便从废玻璃纤维和混合塑料包装废物中生产增值产品。该项目的总体目标是：- 了解与混合塑料废物和废玻璃纤维相关的技术差异和挑战-提高不同类型塑料废物之间的化学相容性-研究并提高与废玻璃纤维的界面结合-研究其加工特性-调查机械和微观结构特性将调查可能影响材料特性和生产工艺性能的塑料废物特性变化所引起的问题。该提案将测量和生成再生塑料特性的技术数据库，并研究控制材料特性的途径。将对废塑料材料进行物理表征，以确定流动和混合程度、熔融和玻璃化转变温度、干玻璃纤维织物的渗透、空隙含量和悬臂梁冲击性能。本项目可能会使用一种新的专利封闭式压力模塑（PALTECH）技术（PALTECH https：//paltech.ie/），并结合Johns Manville提供的废玻璃纤维。将对工艺参数进行优化，以实现回收混合塑料和废玻璃纤维的最佳性能。将对聚合物合金和纤维基质界面进行表征和优化。将进行防火测试，以调查其在各个行业的适用性。将使用光学显微镜、扫描电子显微镜（SEM）、SEM-EDX（能量色散x射线）、动态力学分析（DMA）、差示扫描量热法（DSC）、拉曼和FTIR光谱。将测量悬臂梁冲击强度。这些将与Johns Manville协商进行，他们的测试设施将用于高级表征。