1 / 15

210 likes | 542 Vues

Polymers. Prof. David Roylance Department of Materials Science and Engineering. Advice to Benjamin Braddock, 1967: “I’ve got one word for you, my boy: …”. MIT/DMSE. Plastics, my boy. MIT/DMSE. MIT/DMSE. Some polymer history – ca 1492 Columbus (Priestly ca 1800)

Télécharger la présentation
## Polymers

**An Image/Link below is provided (as is) to download presentation**
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.
Content is provided to you AS IS for your information and personal use only.
Download presentation by click this link.
While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

**Polymers**Prof. David Roylance Department of Materials Science and Engineering Advice to Benjamin Braddock, 1967: “I’ve got one word for you, my boy: …” MIT/DMSE**Plastics, my boy ...**MIT/DMSE**Some polymer history –**• ca 1492 Columbus (Priestly ca 1800) • ca 1839 Goodyear/Hancock • ca 1930 Staudinger/Carouthers • ca 1953 Watson/Crick • ca 1955 Ziegler/Natta • ca 1970 Kwolek MIT/DMSE**The Polymeric Solid State**Semicrystalline microstructure Blow-molded HDPE milk bottle (recyclable) Covalently-bonded long-chain hydrocarbon MIT/DMSE**Stiffness vs. Temperature**MIT/DMSE**Molecular Orientation and Strength**MIT/DMSE**Polyamides**Carouthers: nylon 66 Kwolek: aramid MIT/DMSE**Kevlar Fibers – a polyaramid**MIT/DMSE**Modern Lightweight Personnel Armor**MIT/DMSE**Panel and Bullet After Impact**MIT/DMSE**Vs-Vr Plot – Kevlar 29, Single Layer**MIT/DMSE

More Related