科技英语资料.doc_第1页
科技英语资料.doc_第2页
科技英语资料.doc_第3页
科技英语资料.doc_第4页
全文预览已结束

下载本文档

版权说明:本文档由用户提供并上传,收益归属内容提供方,若内容存在侵权,请进行举报或认领

文档简介

Engineering plasticEngineering plastics1are a group ofplasticmaterials that have better mechanical and/or thermal properties than the more widely usedcommodity plastics(such aspolystyrene,PVC,polypropyleneandpolyethylene).Being more expensive, engineering plastics are produced in lower quantities and tend to be used for smaller objects or low-volume applications (such as mechanical parts), rather than for bulk and high-volume ends (like containers and packaging).The term usually refers tothermoplasticmaterials rather thanthermosettingones. Examples of engineering plastics includeacrylonitrile butadiene styrene(ABS), used forcar bumpers,dashboardtrim andLegobricks;polycarbonates, used inmotorcycle helmets; andpolyamides(nylons), used forskisandski boots.Engineering plastics have gradually replaced traditional engineering materials such as wood or metal in many applications. Besides equalling or surpassing them in weight/strength and other properties, engineering plastics are much easier to manufacture, especially in complicated shapes.The global market for engineering plastics in terms of revenue was estimated to be worth $45.2 billion in 2011 and is expected to reach $76.8 billion by 2017.2Relevant propertieseditEach engineering plastics usually has a unique combination of properties that may make it the material of choice for some application. For example, polycarbonates are highly resistant to impact, while polyamides are highly resistant to abrasion. Other properties exhibited by various grades of engineering plastics include heat resistance, mechanical strength, rigidity, chemical stability and fire safety.ResearchmFaculty in the Department of Plastics Engineering are active researchers. The department maintains an extensive lab facility allowing the faculty to direct research in areas including the following: Plastics Product Design Plastics Process Development Plastics Materials and Additives Plastics Mold and Die Design Elastomers and Rubber Testing and Characterization Computer-Aided Engineering Plastics Recycling Polymeric BiomaterialsOther Research Initiatives Commercial Ventures and Intellectual PropertyTechnology commercialization takes place within Commercial Ventures and Intellectual Property (CVIP), whereas the focus of our economic development activities is with entrepreneurs and early stage companies within Commercial Venture Development (CVD). Nanomanufacturing CenterNanotechnology research is creating scientific breakthroughs at an amazing rate - inventions that hit the national and international news almost daily. The promise of nanotechnology will not be realized until lab-created inventions can be reliably replicated and manufactured. M2D2 NSF Biodegradable Polymer Research CenterThe Biodegradable Polymer Research Center (BPRC) functions to carry out exploratory and fundamental research on biodegradable polymers to support the technological interests of its members.The Plastics Engineering faculty works closely with both industry and governmental organizations on plastics-related research. Most research programs are developed between faculty members and the sponsoring company or organization. Project sponsors define their specific needs, and the faculty member(s) develop a proposal.In such cases, a proposal is developed with the assistance of the UMass Lowell Office for Research Administration, the Universitys one-stop solutions provider for managing research, budgets, technology research programs and technology licensing. Mechanisms exist for conducting all types of research programs: from simple short-term materials testing or consultations to major multi-year research projects.List of engineering plasticsedit Acrylonitrile butadiene styrene(ABS) (丙烯腈-丁二烯-苯乙烯共聚物) Nylon 6 (尼龙6) Nylon 6-6 Polyamides(PA) Polybutylene terephthalate(PBT) Polycarbonates(PC) Polyetheretherketone(PEEK) Polyetherketone(PEK) Polyethylene terephthalate(PET) Polyimides Polyoxymethylene plastic(POM / Acetal) Polyphenylene sulfide(PPS) Polyphenylene oxide(PPO) Polysulphone(PSU) Polytetrafluoroethylene(PTFE / Teflon) Ultra-high-molecular-weight polyethylene(UHMWPE / UHMW)ABS Outstanding impact resistance and easy to thermoform。Acetal High strength, low friction, and excellent machinability.High Density PolyethyleneHDPE, widely used as cutting board m

温馨提示

  • 1. 本站所有资源如无特殊说明,都需要本地电脑安装OFFICE2007和PDF阅读器。图纸软件为CAD,CAXA,PROE,UG,SolidWorks等.压缩文件请下载最新的WinRAR软件解压。
  • 2. 本站的文档不包含任何第三方提供的附件图纸等,如果需要附件,请联系上传者。文件的所有权益归上传用户所有。
  • 3. 本站RAR压缩包中若带图纸,网页内容里面会有图纸预览,若没有图纸预览就没有图纸。
  • 4. 未经权益所有人同意不得将文件中的内容挪作商业或盈利用途。
  • 5. 人人文库网仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对用户上传分享的文档内容本身不做任何修改或编辑,并不能对任何下载内容负责。
  • 6. 下载文件中如有侵权或不适当内容,请与我们联系,我们立即纠正。
  • 7. 本站不保证下载资源的准确性、安全性和完整性, 同时也不承担用户因使用这些下载资源对自己和他人造成任何形式的伤害或损失。

评论

0/150

提交评论