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A new, simple water foamed injection moulding process to allow class A polymer surface finish

一种新的、简单的水发泡注射成型工艺，可实现 A 级聚合物表面光洁度

基本信息

批准号：
133242
负责人：
金额：
$ 8.6万
依托单位：
FOAMTECH SYSTEMS LTD
依托单位国家：
英国
项目类别：
Feasibility Studies
财政年份：
2018
资助国家：
英国
起止时间：
2018 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=133242
关键词：
new simple water foamed injection

项目摘要

"The global structural foam market is expected to reach $31.9 Billion by 2020, with annualized growth of ~6% between 2015 & 2020\.Structural foam is significantly lighter than solid plastics, with high strength-to-weight ratio and lower cost tooling. The automotive sector is the main driver to structural foam growth as lifetime energy & CO2 savings drive the need for light weight components.Chemical blowing agents normally used in structural foam production cause ozone depletion & will be phased out under the Montreal Protocol. Gases such as butane & pentane are an inherent fire risk, while N2 & CO2 are relatively expensive to use, require storage alongside the mould m/c. Structural foam parts also using these processes all suffer from relatively poor surface finish especially when low injection pressure is used. Foamtech is a new process to make structural foam moulded light-weight parts, with a Class A surface finish. The idea combines novel foaming technology - Super Heated Water Injection technology (SHWI) that uses tap water to foam polymer achieved using a novel injection technology derived from a common rail diesel injection system. This is combined with our novel melt stream splitting valve array that enables us to keep the 'foamed' fraction separate from the 'skin' fraction to achieve a class A surface finish."

“到2020年，全球结构泡沫市场预计将达到319亿美元，2015年至2020年期间的年增长率约为6%。结构泡沫比固体塑料轻得多，具有高强度重量比和较低的模具成本。汽车行业是结构泡沫塑料增长的主要驱动力，因为终身能源和二氧化碳节约推动了对轻质部件的需求。通常用于结构泡沫塑料生产的化学发泡剂会导致臭氧消耗，并将根据蒙特利尔议定书逐步淘汰。丁烷和戊烷等气体具有固有的火灾风险，而N2和CO2的使用相对昂贵，需要在模具m/c旁边储存。也使用这些方法的结构泡沫部件都遭受相对差的表面光洁度，特别是当使用低注射压力时。Foamtech是一种新工艺，用于制造具有A级表面光洁度的结构泡沫模塑轻质部件。该想法结合了新型发泡技术-超热水喷射技术（SHWI），该技术使用自来水使聚合物发泡，并使用源自共轨柴油喷射系统的新型喷射技术实现。这与我们的新型熔体流分流阀阵列相结合，使我们能够保持“泡沫”部分与“表皮”部分分离，以实现A级表面光洁度。"