塑料工业讲稿

1、塑料工业Plastics Industry教学设计 教学内容与设计时间分配或备注说明1、PlasticsIntroduction to Materials When you hear the word PLASTIC, what comes to mind?What is a PLASTIC?How long have plastics been around?How much plastic is used each year? Basically a plastic is a material that you can shape when it is soft and it will t

2、hen harden. It can be a naturally occurring material like clay.It can be a synthetic material like Polyethylene.2、HistoryMuch of the development/discovery of plastics has either been in the attempt to replace other materials or through accidental discovery.Much of the development of PVC was in an at

3、tempt to replace rubberPlastics as we know them today have only been around for a couple hundred years.3、VolumeMany of the technological developments of the past 50 years would not have been possible without the discovery and development of plastic materialsPlastics have allowed for the miniaturizat

4、ion of many of todays common devices: Laptops Cell phones Ipods Etc.Plastics are highly used in almost every industry Automotive Medical Construction Packaging Consumer goodsIn 2006 there were 113.2 billion pounds of plastic produced worldwide. Making products out of plastic saves energy not only in

5、 the production of the items, but also in the transportation of those items. 4、RecyclingPlastic materials do not decompose quickly in a landfill environment. The lack of oxygen and sunlight slows the decomposition process.This is the reasoning behind two main initiatives in the plastics industry1. R

6、ecycling2. The development of degradable polymersCommon products made with recycled materials:Carpet Rope Flower PotsTrash Cans 5、QuestionWhat is your opinion about plastics in your everyday life? What is the advantage and the disadvantage of plastics? 【总结】 本篇需要掌握的单词，词组和句子Words and Expressions: Synthetic 合成的 Polyethylene 聚乙烯 Miniaturization 小型化 Automotive 汽车的 Landfill