Nanotechnology Now

Our NanoNews Digest Sponsors



Heifer International

Wikipedia Affiliate Button


android tablet pc

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

Atom-thick CCD could capture images: Rice University scientists develop two-dimensional, light-sensitive material December 20th, 2014

Oregon researchers glimpse pathway of sunlight to electricity: Collaboration with Lund University uses modified UO spectroscopy equipment to study 'maze' of connections in photoactive quantum dots December 19th, 2014

Instant-start computers possible with new breakthrough December 19th, 2014

Aculon Hires New Business Development Director December 19th, 2014

Possible Futures

A novel method for identifying the body’s ‘noisiest’ networks November 19th, 2014

Researchers discern the shapes of high-order Brownian motions November 17th, 2014

VDMA Electronics Production Equipment: Growth track for 2014 and 2015 confirmed: Business climate survey shows robust industry sector November 14th, 2014

Open Materials Development Will Be Key for HP's Success in 3D Printing: HP can make a big splash in 3D printing, but it needs to shore up technology claims and avoid the temptation of the razor/razor blade business model in order to flourish November 11th, 2014

Announcements

Atom-thick CCD could capture images: Rice University scientists develop two-dimensional, light-sensitive material December 20th, 2014

Oregon researchers glimpse pathway of sunlight to electricity: Collaboration with Lund University uses modified UO spectroscopy equipment to study 'maze' of connections in photoactive quantum dots December 19th, 2014

Instant-start computers possible with new breakthrough December 19th, 2014

Aculon Hires New Business Development Director December 19th, 2014

Food/Agriculture/Supplements

First Home-Made Edible Herbal Nanodrug Presented to Pharmacies across Iran December 17th, 2014

Scientists trace nanoparticles from plants to caterpillars: Rice University study examines how nanoparticles behave in food chain December 16th, 2014

Iranian Scientists Convert Curcumin Existing in Turmeric into Edible Nanodrug December 15th, 2014

Nanoparticles Prove Effective in Removing Phosphor from Calcareous Soil December 10th, 2014

Energy

Oregon researchers glimpse pathway of sunlight to electricity: Collaboration with Lund University uses modified UO spectroscopy equipment to study 'maze' of connections in photoactive quantum dots December 19th, 2014

How does enzymatic pretreatment affect the nanostructure and reaction space of lignocellulosic biomass? December 18th, 2014

Iranian Scientists Use Nanotechnology to Increase Power, Energy of Supercapacitors December 18th, 2014

Lifeboat Foundation gives 2014 Guardian Award to Elon Musk December 16th, 2014

Home

Biosenta Inc. Updates New Household Disinfectant Testing Results; It Kills 100% of a Broad Range of Deadly Molds, Fungi, Bacteria, and Viruses, Including Ebola and Enterovirus D68 November 20th, 2014

Iranian Nano Scientists Create Flame-Resistant Polymers September 13th, 2014

Industrial Nanotech, Inc. Announces Agreement with Eagle Roofing Products to Produce Ultra-Premium Concrete Roof Tile June 17th, 2014

SABIC collaborates with Cima NanoTech on breakthrough technology: industry-first transparent conductive polycarbonate film May 29th, 2014

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







© Copyright 1999-2014 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE