I’m probably just getting old, but I always swallow hard when I see discussion of plastics in the popular media. The current issue of Time, for example, has a one page article titled “Freshen Up Your Drink” under the heading of “health”. The article tackles the subject of whether it’s OK to re-use water bottles, and looks at the case for single-use PET, polycarbonate, HDPE and stainless steel. A table with the article states that HDPE is “made from petroleum”. Are people supposed to believe that PET and polycarbonate are not derived from petroleum? Possibly they are made from some magical substance that is totally benign from an environmental and health viewpoint. The article states that “PET degrades with use”, but that there are “no known problems” with HDPE. My goodness, HDPE, which is a lower quality material than PET, does not degrade with use? And wait a minute, weren’t we just told five minutes ago by the green lobby that we want this stuff to degrade?
The article tells Time readers to dispose of PET containers after a single use (or re-use them as flower pots!), re-use HDPE containers because they are safe, and re-use stainless containers because they are as safe as glass. Time indicates that scientists have concerns with BPA leaching from PC even at room temperature. The article cautions readers not to fill stainless containers with hot water, but makes no such admonition for HDPE! The melting point for stainless is around 2600F; HDPE, 430F!
I remember 30 or so years ago how much I hated all of the broken glass litter left from people who smashed beer bottles. Today, I do see some trash of cans or plastic bottles, but at least they aren’t a safety hazard. And now we’re worrying about whether it’s safe to re-use plastic containers? OK, but let’s at least make sure we make some sense from a technical perspective.
Many of the new adhesives we're featuring in this slideshow are for use in automotive and other transportation applications. The rest of these new products are for a wide variety of applications including aviation, aerospace, electrical motors, electronics, industrial, and semiconductors.
A Columbia University team working on molecular-scale nano-robots with moving parts has run into wear-and-tear issues. They've become the first team to observe in detail and quantify this process, and are devising coping strategies by observing how living cells prevent aging.
Many of the new materials on display at MD&M West were developed to be strong, tough replacements for metal parts in different kinds of medical equipment: IV poles, connectors for medical devices, medical device trays, and torque-applying instruments for orthopedic surgery. Others are made for close contact with patients.
New sensor technology integrates sensors, traces, and electronics into a smart fabric for wearables that measures more dimensions -- force, location, size, twist, bend, stretch, and motion -- and displays data in 3D maps.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.