Materials & Assembly

PLA Blends Perform Like Engineering Thermoplastics

View Comments: Oldest First|Newest First|Threaded View
Dave Palmer
User Rank
Thermoplastic starch vs. mineral filler
Dave Palmer   8/3/2012 4:03:22 PM
@Ann: Many of the comments from your recent article about soy-based polyurethane foam would apply to this material.  In fact, corn-based PLA is significantly more objectionable in terms of its impacts on the environment and the global food crisis.

Furthermore, if the goal is to increase the strength, stiffness, and heat deflection temperature of injection molded plastics, it's already possible to do so using traditional mineral fillers such as talc and calcium carbonate.

The mechanical properties of these new PLA blends look roughly equivalent to what could be expected from a talc-filled PC/ABS.  The main selling point appears to be the ability to put a USDA "bio-based" label on them.

Of course, the role of the USDA is to expand markets for U.S. agricultural products, which the use of bio-based plastics certainly does.  

Greg M. Jung
User Rank
Flammability Ratings
Greg M. Jung   8/21/2012 8:56:38 PM
Good to see these types of polymers being developed.  Any idea of the thicknesses needed for a V0 or 5V UL flammability rating? (which many electronic housings need).

Ann R. Thryft
User Rank
Re: Flammability Ratings
Ann R. Thryft   8/22/2012 12:30:43 PM
Greg, I saw a preliminary data sheet, but I don't believe it contained that info, and it's not up on the company's website yet. If you contact them to find out more, please let us know the result.

Partner Zone
Latest Analysis
Imagine being able to illegally download a physical product the same way you can with music and videos. That’s basically what’s happening with 3D printing and digital manufacturing, with huge repercussions in the intellectual property domain.
Our latest Design News Quick Poll reveals that readers are facing serious cyber security challenges.
Ford will be the first automaker to commercially use Alcoa's tough & fast Micromill aluminum alloy process and materials, debuting on several 2016 F-150 truck components. Alcoa will also license its Micromill process and materials technology to Danieli Group.
Even as an increasing number of instrument manufacturers migrate toward modern touch screens, many engineers say they still prefer the tactile feel of knobs and buttons, a new survey says.
Caterpillar Inc. demonstrated this week at Design and Manufacturing Philadelphia that heavy industry can reap big benefits from 3D printing.
Design News Webinar Series
10/1/2015 11:00 a.m. California / 2:00 p.m. New York
9/10/2015 11:00 a.m. California / 2:00 p.m. New York
10/20/2015 8:00 a.m. California / 11:00 a.m. New York
11/10/2015 11:00 a.m. California / 2:00 p.m. New York
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Oct 19 - 23, Embedded System Design Techniques™ - Driver Design Patterns and the Internet
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6 |  7

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

Sponsored Content

Technology Marketplace

Copyright © 2015 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service