Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

Home > Press > Bayer MaterialScience and partners develop polyurethane nanofoams for thermal insulation

polyurethane nanofoams
polyurethane nanofoams

Abstract:
Double the insulating performance, reduced energy consumption

Bayer MaterialScience and partners develop polyurethane nanofoams for thermal insulation

Leverkusen | Posted on October 15th, 2010

Bayer MaterialScience is working on the development of polyurethane nanofoams that could lead to a quantum leap in thermal insulation performance several years down the road. The company is focusing its efforts on microemulsions, which react under supercritical conditions (Principle of Supercritical Microemulsion Expansion, POSME) to form polyurethane rigid foams. The aim is to produce rigid foams with pore sizes of less than 150 nanometers in diameter.

"Nanofoams of this kind achieve twice the thermal insulation performance of today's polyurethane foams, meaning that they could, for example, significantly reduce the energy consumption of refrigeration appliances and, in turn, make a major contribution to reducing CO2 emissions. Furthermore, the walls of these appliances could be of thinner design, resulting in more storage space for refrigerated goods," explained Dr. Stefan Lindner, a polyurethane rigid foam specialist at Bayer MaterialScience.

The company is partnering on this research project with Prof. Reinhard Strey from the University of Cologne's Institute of Physical Chemistry, who has applied for a patent on the POSME process. As part of the collaboration, his working group is engaged in optimizing the characteristics of the microemulsions.

The thermal insulation performance of a polyurethane rigid foam depends chiefly on the size of the foam pores. The smaller the diameter, the lower the thermal conductivity and the better the insulating effect. Today's polyurethane rigid foams typically have pore sizes of roughly 150 micrometers, which exceeds the pore size of nanofoams planned for the future by a factor of approximately 1,000.

To synthesize a nanofoam using the POSME method, carbon dioxide (CO2) and the liquid polyurethane raw materials (polyol and isocyanate) are mixed with the help of special surfactants at a pressure of 200 bar to form a microemulsion consisting of nanometer-sized droplets filled with CO2 and encapsulated in surfactants. The pressure is then reduced, causing the CO2 to expand and the droplets to become bubbles still in the nanometer range. At the same time, the polyurethane raw materials react to form a 3D polymer network that is a rigid polyurethane foam.

"One of the trickiest challenges we face is to optimally coordinate the reaction of the polyurethane raw materials with the expansion of the CO2 bubbles by carefully fine-tuning the processing parameters so that nanopores of the targeted diameter result," explained Mr. Lindner. "It's no easy task," added Dr. Wolfgang Friederichs, head of Global Product Research at Bayer MaterialScience. "It is likely to take several more years before these challenges are overcome."

####

About Bayer MaterialScience
With 2009 sales of EUR 7.5 billion, Bayer MaterialScience is among the world’s largest polymer companies. Business activities are focused on the manufacture of high-tech polymer materials and the development of innovative solutions for products used in many areas of daily life. The main segments served are the automotive, electrical and electronics, construction and the sports and leisure industries. At the end of 2009, Bayer MaterialScience had 30 production sites and employed approximately 14,300 people around the globe. Bayer MaterialScience is a Bayer Group company.

For more information, please click here

Copyright © Bayer MaterialScience

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

Three-dimensional graphene: Experiment at BESSY II shows that optical properties are tuneable May 24th, 2017

Leti to Demo 1st Wireless UNB Transceiver for ‘Massive Internet of Things’ at RFIC 2017 and IMS 2017: Leti Will also Present Three Papers & Two Workshops on 5G Communications IC Design, from RF to mm-Wave, During IMS 2017 and RFIC 2017 in Hawaii May 24th, 2017

GLOBALFOUNDRIES and Chengdu Partner to Expand FD-SOI Ecosystem in China: More than $100M investment to establish a center of excellence for FDXTM FD-SOI design May 23rd, 2017

Zap! Graphene is bad news for bacteria: Rice, Ben-Gurion universities show laser-induced graphene kills bacteria, resists biofouling May 22nd, 2017

Possible Futures

Three-dimensional graphene: Experiment at BESSY II shows that optical properties are tuneable May 24th, 2017

GLOBALFOUNDRIES and Chengdu Partner to Expand FD-SOI Ecosystem in China: More than $100M investment to establish a center of excellence for FDXTM FD-SOI design May 23rd, 2017

Zap! Graphene is bad news for bacteria: Rice, Ben-Gurion universities show laser-induced graphene kills bacteria, resists biofouling May 22nd, 2017

Leti Will Demo World’s-first WVGA 10-µm Pitch GaN Microdisplays for Augmented Reality Video at Display Week in Los Angles: Invited Paper also Will Present Leti’s Success with New Augmented Reality Technology That Reduces Pixel Pitch to Less than 5 Microns May 22nd, 2017

Announcements

Three-dimensional graphene: Experiment at BESSY II shows that optical properties are tuneable May 24th, 2017

Leti to Demo 1st Wireless UNB Transceiver for ‘Massive Internet of Things’ at RFIC 2017 and IMS 2017: Leti Will also Present Three Papers & Two Workshops on 5G Communications IC Design, from RF to mm-Wave, During IMS 2017 and RFIC 2017 in Hawaii May 24th, 2017

GLOBALFOUNDRIES and Chengdu Partner to Expand FD-SOI Ecosystem in China: More than $100M investment to establish a center of excellence for FDXTM FD-SOI design May 23rd, 2017

Zap! Graphene is bad news for bacteria: Rice, Ben-Gurion universities show laser-induced graphene kills bacteria, resists biofouling May 22nd, 2017

Food/Agriculture/Supplements

New technology could offer cheaper, faster food testing: Specialized droplets interact with bacteria and can be analyzed using a smartphone April 7th, 2017

Meta-lenses bring benchtop performance to small, hand-held spectrometer: Game-changing nanostructure-based lenses allow smaller devices, increased functionality February 9th, 2017

PCATDES Starts Field Testing of Photocatalytic Reactors in South East Asia December 28th, 2016

News from Quorum: The Agricultural Research Service of the USDA uses a Quorum Cryo-SEM preparation system for the study of mites, ticks and other soft bodied organisms November 22nd, 2016

Energy

Three-dimensional graphene: Experiment at BESSY II shows that optical properties are tuneable May 24th, 2017

Stanford scientists use nanotechnology to boost the performance of key industrial catalyst May 18th, 2017

Fed grant backs nanofiber development: Rice University joins Department of Energy 'Next Generation Machines' initiative May 10th, 2017

Discovery of new transparent thin film material could improve electronics and solar cells: Conductivity is highest-ever for thin film oxide semiconductor material May 6th, 2017

Home

Rice lab expands palette for color-changing glass: Nanophotonics team creates low-voltage, multicolor, electrochromic glass March 8th, 2017

Chemists Cook up New Nanomaterial and Imaging Method: Nanomaterials can store all kinds of things, including energy, drugs and other cargo January 19th, 2017

Industrial Nanotech, Inc. Announces Plans to Spin Off New Product Line to Major Paint Compan November 9th, 2016

New flexible material can make any window 'smart' August 23rd, 2016

NanoNews-Digest
The latest news from around the world, FREE



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project