A Novel Manufacturing Process for the Extrusion of Helical Auxetic Yarns

螺旋拉胀纱挤出的新型制造工艺

• 批准号: EP/J004553/1
• 负责人: Kenneth Evans
• 金额: $ 53.79万
• 依托单位: UNIVERSITY OF EXETER
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2012
• 资助国家: 英国
• 起止时间: 2012 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FJ004553%2F1
• 关键词: Novel; Manufacturing; Process; Extrusion; Helical

An auxetic material is one which exhibits a negative Poisson's ratio: this is a counter-intuitive physical property whereby the material becomes thicker when stretched.An exciting new invention in the field of auxetics is the helical auxetic yarn. This is a yarn composed of two conventional fibres, one helically wrapped around the other. By appropriate choice of materials and geometry this yarn can be made such that it effectively gets wider when stretched. This opens a panorama of interesting possibilities for high-performance or 'smart' textiles. Uses include pore-opening fabrics in healthcare or security and defence sectors, filtration, colour-change fabrics for healthcare, safety harnesses or fashion, and disaster mitigation - tornado, hurricane or earthquake protection.It is easy to make small quantities of auxetic yarn for laboratory trials. These trials have provided, and continue to provide, exciting evidence of benefits to society. To exploit these opportunities we need to develop a method of manufacturing the yarn in industrial scale quantities and at a quality with which commercial enterprises can work and earn profit.This research project is developing new extrusion manufacturing techniques to produce helical auxetic yarns and, in particular, developing a new version of the yarn which will truly unleash the commercial potential of the technology.

拉胀材料是一种表现出负泊松比的材料：这是一种违反直觉的物理性质，材料在拉伸时会变厚。拉胀领域一项令人兴奋的新发明是螺旋拉胀纱线。这是一种由两种传统纤维组成的纱线，一种螺旋缠绕在另一种周围。通过适当地选择材料和几何形状，这种纱线可以制成使得其在拉伸时有效地变得更宽。这为高性能或“智能”纺织品打开了一个有趣的可能性全景。用途包括医疗保健或安全和国防领域的开孔织物，医疗保健、安全带或时装领域的过滤、变色织物，以及减灾-龙卷风、飓风或地震防护。这些试验已经提供并将继续提供令人兴奋的证据，证明对社会有益。为了利用这些机会，我们需要开发一种方法，以工业规模的数量和商业企业可以工作和赚取利润的质量来制造纱线。本研究项目正在开发新的挤出制造技术，以生产螺旋拉胀纱线，特别是开发一种新的纱线，这将真正释放该技术的商业潜力。

项目成果

Dynamic thermo-mechanical and impact properties of helical auxetic yarns

• DOI: 10.1016/j.compositesb.2016.05.059
• 发表时间: 2016-08
• 期刊: Composites Part B-engineering
• 影响因子: 13.1
• 作者: Guanhua Zhang;O. Ghita;K. Evans

Large-scale manufacturing of helical auxetic yarns using a novel semi-coextrusion process

• DOI: 10.1177/0040517517725125
• 发表时间: 2018-11-01
• 期刊: TEXTILE RESEARCH JOURNAL
• 影响因子: 2.3
• 作者: Zhang, Guanhua;Ghita, Oana R.;Evans, Kenneth E.
• 通讯作者: Evans, Kenneth E.

The variation in Poisson's ratio caused by interactions between core and wrap in helical composite auxetic yarns

• DOI: 10.1016/j.compscitech.2014.07.023
• 发表时间: 2014-10-06
• 期刊: COMPOSITES SCIENCE AND TECHNOLOGY
• 影响因子: 9.1
• 作者: Bhattacharya, S.;Zhang, G. H.;Evans, K. E.
• 通讯作者: Evans, K. E.

The fabrication and mechanical properties of a novel 3-component auxetic structure for composites

• DOI: 10.1016/j.compscitech.2015.06.012
• 发表时间: 2015-09-29
• 期刊: COMPOSITES SCIENCE AND TECHNOLOGY
• 影响因子: 9.1
• 作者: Zhang, G. H.;Ghita, O.;Evans, K. E.
• 通讯作者: Evans, K. E.

Varying the performance of helical auxetic yarns by altering component properties and geometry

通过改变组件特性和几何形状来改变螺旋拉胀纱线的性能

• DOI: 10.1016/j.compstruct.2015.12.032
• 发表时间: 2016
• 期刊: Composite Structures
• 影响因子: 6.3
• 作者: Zhang G