Novel 3-D printed high-performance polymer


Novel 3-D printed high-performance polymer
  1. Novel 3-D printed high-performance polymer
    3dprintingprogress.com
    Researchers have created a novel way to 3-D print the type of high-temperature polymeric materials commonly used to insulate space craft and satellites from extreme heat and cold. Previously, the polyimide could be made only in…
    Technology
Virginia Tech researchers have created a novel way to 3-D print the type of high-temperature polymeric materials commonly used to insulate space craft and satellites from extreme heat and cold. Previously, the polyimide could be made only in sheets.   The material, formally known as Kapton, is an aromatic polymer composed of carbons and hydrogens inside benzene rings, which provides exceptional thermal and chemical stability. But because of this molecular structure, the material is notoriously difficult to produce in any format other than thin sheets. Kapton often is used in the multi-layer insulation that forms the outer wrapping of spacecraft, satellites, and planetary rovers to protect them from extreme heat and cold. It often is mistaken for "gold foil."   Researchers from the College of Engineering and College of Science were able to synthesize the macromolecules, allowing them to remain stable and maintain their thermal properties for processing in 3-D printing. The high-performance polymer now could theoretically be used in any shape, size, or structure, with small chess pieces and lattice bricks already produced inside Virginia Tech labs. Possible future uses are not limited to the aerospace industry. The same material can be found in scores of electronic devices, including cell phones and televisions.   "Conventional processing routes have limited engineers to make only thin films from these materials," said Christopher Williams, an associate professor with the Department of Mechanical Engineering in the College of Engineering and leader of the Design, Research, and Education for Additive Manufacturing Systems (DREAMS) Laboratory. "Now that we can 3-D print these materials, we can start designing and printing them into much more complex 3-D shapes, which allows us to take advantage of their excellent properties over a much broader range of applications."   Materials currently used in 3-D printing do not have the high strength and stiffness across broad hot-cold temperature ranges necessary for the extremes of space. Typically, printable polymers start to lose their mechanical strength at about 300 degrees Fahrenheit.   This new polymer maintains its properties above 680 degrees Fahrenheit, the research team said. "We are now able to print the highest temperature polymer ever - about 285 degrees Fahrenheit higher in deflection temperature than any other existing printable polymer. Additionally, our 3-D printed material has equivalent strength to the conventionally processed thin-film Kapton material," Williams said. (The material's heat-resistant ceiling before degradation is 1,020 degrees Fahrenheit.)   "We can imagine this being used for printing a satellite structure, serving as a high-temp filter or a high-temp flow nozzle," said Williams, the Electro-Mechanical Corporation Senior Faculty Fellow in Advanced Manufacturing Systems. "We can imagine using the wide geometric and microscale possibilities offered by 3-D printing to further improve existing designs - say, a more lightweight satellite, a filter that provides optimum/efficient flow, a nozzle with a designed flow path that allows greater exit velocity and efficiency."   A key early breakthrough in the project occurred in the laboratory of Timothy Long, a professor with the Department of Chemistry, part of the College of Science, and also the director of the Macromolecules Innovation Institute…
  1. The Age of Anarchy

    Venturemagazine.me - Technology
    09.20 / 15:06 venturemagazine.me
    Crypto-anarchists are ahead of the curve when it comes to understanding how to navigate our seemingly chaotic digital existence. Crypto-anarchists use cryptographic software to conceal the sending and receiving information over networks, to protect their privacy and political freedom while... The post The Age of Anarchy appeared first on Venture…
  2. Top 10 Open Source CRM Systems

    Solutiondots.com - Companies
    09.20 / 11:05 solutiondots.com
    The post Top 10 Open Source CRM Systems appeared first on…
  3. Intl. Iran Pharma expo underway in Tehran

    En.mehrnews.com - Technology
    09.19 / 23:38 en.mehrnews.com
    TEHRAN, Sep. 13 (MNA) – The 3rd International Exhibition on Pharmaceuticals and Related Industries, Iran Pharma 2017, kicked off on Tuesday in Tehran and will run through September 1…
  4. Top 15 Best Free Bookkeeping Software

    Solutiondots.com - Companies
    09.19 / 23:13 solutiondots.com
    The post Top 15 Best Free Bookkeeping Software appeared first on…
  5. Top 'Streamripping' Site Shuts after Music Business Suits

    Naharnet.com - Technology
    09.19 / 22:09 naharnet.com
    The most popular "streamripping" site, in which millions of users have converted YouTube videos into audio files, shut down Thursday faced with a legal campaign by the music industry. YouTube-mp3.org, a site in Germany started in the bedroom of computer science student Philip Matesanz, was inaccessible on Thursday with no further…
  6. Conductive inks: never ceasing to adapt

    3dprintingprogress.com - Technology
    09.19 / 22:07 3dprintingprogress.com
    Cast your mind back a few years and you will find a conductive ink business that appeared very mature and slow moving. Then everything began to…
  7. Swiss Shut Down ‘Fake’ E-Coin in Latest Cryptocurrency Crackdown

    Hamodia.com - Technology
    09.19 / 22:05 hamodia.com
    Switzerland’s financial watchdog has closed down what it said was the provider of a fake cryptocurrency and is investigating around a dozen other possible fraud cases, in the latest clamp-down… Read more » The post Swiss Shut Down ‘Fake’ E-Coin in Latest Cryptocurrency Crackdown appeared first on Hamodia. In related news: Charities Open Coffers to Cryptocurrency Donations Secret Millions for Cryptocurrency Trader Swiss Relieved Credit Suisse Probe in US Is…
  8. Link Between Obssessive-Compulsive Disorder and High IQ Debunked by Israeli, U.S. Researchers

    Hamodia.com - Technology
    09.19 / 22:05 hamodia.com
    Obsessive-compulsive disorder (OCD) is not associated with a higher intelligence quotient (IQ), a myth popularized modern psychologists , according to researchers at Ben-Gurion University of the Negev (BGU), Texas State… Read more » The post Link Between Obssessive-Compulsive Disorder and High IQ Debunked by Israeli, U.S. Researchers appeared first on Hamodia. In related news: Israeli Researchers Discover Gene for Neurological Disorder Israeli Researchers Develop ‘Stealthy F…
  9. Self-Driving Uber Fleet Returns to Service Following Crash

    Hamodia.com - Technology
    09.19 / 22:05 hamodia.com
    Uber has resumed self-driving vehicle service in Pittsburgh following a crash. The company briefly suspended their self-driving fleet Monday morning. Police say a car collided with a self-driving Uber SUV.… Read more » The post Self-Driving Uber Fleet Returns to Service Following Crash appeared first on Hamodia. In related news: Uber Suspends Testing of Self-Driving Cars After Crash Uber Suspends Self-Driving Car Program in 2 States California Puts Brakes on Uber’s S…
  10. World’s Most Wired Cities Have Money, Ideas and Wide Internet Reach

    Naharnet.com - Technology
    09.14 / 22:06 naharnet.com
    A few extra-keen cities in developed countries are using internet technology to cut energy bills, fight crime and ease traffic congestion. Now everyone else wants to know how they got so far. New York, Singapore, Taipei, Barcelona and London are regarded now as what techies call “smart cities” due to efficient use of a speedy internet and wireless connections. Lesser known hotspots include Charlotte in the United States and Lyon, France. These cities make up just a partial lis…
  11. AT&T Opens iPhone Price War With Buy-One-Get-One-Free Offer

    Hamodia.com - Technology
    09.14 / 22:00 hamodia.com
    And so it begins. The promised truce among wireless carriers is over. After vowing to avoid a repeat of the blistering iPhone price war of last year, AT&T will fire… Read more » The post AT&T Opens iPhone Price War With Buy-One-Get-One-Free Offer appeared first on Hamodia. In related news: Ahead of iPhone 6, Wal-Mart Cuts Prices on iPhone 5s, 5c With New iPhone’s Arrival, Buyers Have More Pricing Options Than Ever Apple Reports Record-Breaking Orders for iPhone 6, iPhone 6 P…
  12. Choosing Between Cloud and Hosted ERP and Why It Matters

    Solutiondots.com - Companies
    09.14 / 11:12 solutiondots.com
    The post Choosing Between Cloud and Hosted ERP and Why It Matters appeared first on…