HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
Blogs
Engineering Materials

Self-Healing Plastic Changes Color When Damaged

NO RATINGS
Page 1 / 2 Next >
View Comments: Oldest First|Newest First|Threaded View
<<  <  Page 2/2
ChasChas
User Rank
Platinum
Re: Smart Plastic
ChasChas   5/1/2012 10:03:07 AM
NO RATINGS
 

I don't think this is just about plactic. This looks like a venture into "intelligent material" in general.

Ann R. Thryft
User Rank
Blogger
Re: Plastics in need of healing?
Ann R. Thryft   5/1/2012 1:06:02 PM
NO RATINGS
Chuck, the types of damage mentioned were all surface types, such as cuts, cracks and scratches. This is not aimed at repairing structural damage.

Ann R. Thryft
User Rank
Blogger
Re: Smart Plastic
Ann R. Thryft   5/1/2012 1:12:39 PM
NO RATINGS

Nadine, intense light is one possible exposure mechanism--the article also mentions changes in temperature or pH. I'm not sure why strong light would be a problem for an implant, since an implant is usually kept away from light. Can you tell us more about what you mean?


Ann R. Thryft
User Rank
Blogger
Re: Smart Plastic
Ann R. Thryft   5/1/2012 1:13:41 PM
NO RATINGS

Mydesign, most countries are trying to find alternate feedstocks for plastics, like bioplastics, and/or design plastics that are compostable or recyclable, as I've written about here

http://www.designnews.com/author.asp?section_id=1392&doc_id=239645

http://www.designnews.com/document.asp?doc_id=239662

http://www.designnews.com/author.asp?section_id=1392&doc_id=240409

http://www.designnews.com/author.asp?section_id=1392&doc_id=241854

http://www.designnews.com/author.asp?section_id=1392&doc_id=242634

Meanwhile, these new plastics are only a drop in the huge bucket of the amount of plastics we consume. So extending the life of non-recyclable, non-compostable plastics by reusing them helps keep them out of the landfill.


NadineJ
User Rank
Platinum
Re: Smart Plastic
NadineJ   5/1/2012 2:01:32 PM
NO RATINGS
Ann: I'm thinkiing specifically about joint replacement.  I had the honor to attend an orthopaedic surgeons conference a few months ago. The technology is very interesting and has been making slow advances, especially in hip replacements.  Even temperature and PH changes would be problematic for spine, knee and hip replacements.

But, it may cause less trauma than entirely replacing the unit.

Ann R. Thryft
User Rank
Blogger
Re: Smart Plastic
Ann R. Thryft   5/1/2012 2:13:59 PM
NO RATINGS
Nadine, thanks for the clarification. Since this material is aimed at self-repairing surface damage, I don't think it's designed for implants. But that's an interesting idea. There are many biocompatible plastics made for that application, and designing one of those to be self-healing would be a good PhD project.

Ann R. Thryft
User Rank
Blogger
Re: Smart Plastic
Ann R. Thryft   5/2/2012 12:51:27 PM
NO RATINGS
Thanks Greg, that's a really good example of the type of application this could serve.

Ann R. Thryft
User Rank
Blogger
Re: Smart Plastic
Ann R. Thryft   5/3/2012 12:59:52 PM
NO RATINGS

ChasChas, thanks for that comment. I agree with you. I've reported on several other experimental materials that seem to be moving toward intelligence, some of them via nanotechnology, and many of them based on shifts in electrical charge.


William K.
User Rank
Platinum
Self-healing plastics
William K.   5/5/2012 9:52:53 PM
NO RATINGS
It would be quite useful to know some of the more common materials propertiies of this self healing material, such as strength, stiffness, and temperature ratings, and that all important property, PRICE. My guess is that it would never be found in consumer goods evenif the cost were half that of styrene regrind. It appears that many consumer goods have avery intentional low quality level, so that they would be replaced every few months.

Ann R. Thryft
User Rank
Blogger
Re: Self-healing plastics
Ann R. Thryft   5/7/2012 12:30:53 PM
NO RATINGS
William, thanks for your comment. I agree with you about this not being likely for consumer-grade use. We addressed this issue earlier in the thread: since this is not close to commercial development yet, price and cost differentials are unknown. But self-healing plastics like this one--which unusually can self-heal multiple times--multiply the life of the object several times. Less plastic gets used during that time, so the COO to manufacturers would be lower than buying it once. It's not aimed at high-volume, low-cost throwaway applications, but ones where continued use of a high-value product is important, such as military or medical products.

<<  <  Page 2/2
Partner Zone
More Blogs from Engineering Materials
Two new technologies from Stratasys, created in partnership with Boeing, Ford, and Siemens, will bring accurate, repeatable manufacturing of very large thermoplastic end products, and much bigger composite parts, onto the factory floor for industries including automotive and aerospace.
Optomec's Aerosol Jet systems have now been used by several customers for printing 3D polymer and composite structures at the micron scale with embedded electronics and biomedical applications.
3D printing is now adding value to manufacturers at all steps along the business value chain. Come find out how at a talk by John Jaddou at next month's Embedded Systems Conference in Minneapolis.
These new 3D-printing technologies and printers include some that are truly boundary-breaking: a sophisticated new sub-$10,000, 10-plus materials bioprinter, the first industrial-strength silicone 3D-printing service, and a clever twist on 3D printing and thermoforming for making high-quality realistic models.
A team of researchers at Stanford University and IBM Research have developed a catalyst that could quickly and inexpensively generate biodegradable plastics derived from renewable materials.
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6 |  7 | 8 | 9 | 10


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.
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Technology Marketplace

Copyright © 2016 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service