Toughening mechanisms in modified syntactic foams

改性复合泡沫塑料的增韧机制

• 批准号: 1817974
• 金额: --
• 依托单位: Imperial College London
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2016
• 资助国家: 英国
• 起止时间: 2016 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-1817974
• 关键词: Toughening; mechanisms; modified; syntactic; foams

Syntactic foams are stiff but lightweight materials which comprise hollow glass microspheres embedded in an epoxy polymer matrix. This makes them excellent materials for structural applications, such as the core in sandwich panels with carbon fibre reinforced polymer skins. However, as they are based on highly crosslinked thermosetting polymer they can be brittle, and hence be susceptible to damage and cracking whilst in service. Their performance can be improved by increasing their toughness by the addition of modifiers such as rubber, polymeric or ceramic particles to the epoxy matrix. Thus this project will investigate the morphology, mechanical properties, fracture toughness and toughening mechanisms of syntactic foams with the addition of various modifiers. The toughening mechanisms will be identified, and the knowledge gained will be used to produce higher performance syntactic foams.

复合泡沫是一种坚硬但重量轻的材料，由嵌入环氧聚合物基体的中空玻璃微球组成。这使它们成为结构应用的优秀材料，例如碳纤维增强聚合物外壳夹心板的核心。然而，由于它们是基于高度交联的热固性聚合物，它们可能很脆，因此在使用过程中容易损坏和开裂。通过在环氧树脂基体中加入橡胶、聚合物或陶瓷颗粒等改性剂来增加其韧性，可以改善其性能。因此，本项目将研究添加各种改性剂后复合泡沫的形貌、力学性能、断裂韧性和增韧机理。将确定增韧机制，并将所获得的知识用于生产更高性能的句法泡沫。

项目成果

Toughening epoxy syntactic foams with milled carbon fibres: Mechanical properties and toughening mechanisms

• DOI: 10.1016/j.matdes.2019.107654
• 发表时间: 2019-05-05
• 期刊: MATERIALS & DESIGN
• 影响因子: 8.4
• 作者: He, Sammy;Carolan, Declan;Taylor, Ambrose C.
• 通讯作者: Taylor, Ambrose C.