Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Nanoparticles Make Silicone Rubber Clearly Stronger

27.10.2003


Silicone rubber and other rubber-like materials have a wide variety of uses, but in almost every case they must be reinforced with particles to make them stronger or less permeable to gases or liquids. University of Cincinnati (UC) chemistry professor James Mark and colleagues have devised a technique that strengthens silicone rubber with nanoscale particles, but leaves the material crystal clear.



Silicone rubber is often reinforced by tiny particles of silica (the primary component of sand and the mineral quartz). However, those silica particles can cloud the silicone rubber, which is a problem for protective masks, contact lenses and medical tubing that rely on silicone rubber’s transparency.

Mark, along with graduate student Guru Rajan, UC professor Dale Schaefer, UC associate professor Gregory Beaucage and Yeungnam University (Korea) professor Gil Sur reported on their new technique in the August 15 issue of the Journal of Polymer Science Part B: Polymer Physics.


The technique infuses silicone rubber with nanoparticles up to five times smaller than the silica particles formed by comparable methods while still providing the same level of reinforcement and maintaining the silicone rubber’s clarity.

Variations on the technique might also be used to enhance other properties of silicone rubber and similar materials, affecting such traits as impermeability to gases or liquids. This could lead to better masks or suits to protect against agents that might be used in terrorist attacks.

The team’s technique is an improvement over related methods that use a chemical reaction to create silica particles within the silicone polymers. By generating the required catalyst in place from a tin salt and by restricting the amount of water to only that absorbed from water vapor in the air, the silica particles remain smaller—only 30 nm to 50 nm across—and are evenly dispersed throughout the silicone rubber. At that size, smaller than the wavelength of ultraviolet and visible light, the silica nanoparticles are essentially invisible.

NSF Media Contact: David Hart, 703-292-7737, dhart@nsf.gov

NSF Science Experts: Andrew Lovinger, 703-292-4933, alovinge@nsf.gov
Triantafillos J. Mountziaris, 703-292-8371, tmountzi@nsf.gov

Principal Investigators: James Mark, 513-556-9292, james.mark@uc.edu
Gregory Beaucage, 513-556-3063, gregory.beaucage@uc.edu

Josh Chamot | NSF
Further information:
http://www.nsf.gov/od/lpa/news/03/tip031027.htm#third

More articles from Materials Sciences:

nachricht Combining the elements palladium and ruthenium for industry
22.09.2016 | National Institute for Materials Science

nachricht Defects at the spinterface disrupt transmission
21.09.2016 | Eberhard Karls Universität Tübingen

All articles from Materials Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: OLED microdisplays in data glasses for improved human-machine interaction

The Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP has been developing various applications for OLED microdisplays based on organic semiconductors. By integrating the capabilities of an image sensor directly into the microdisplay, eye movements can be recorded by the smart glasses and utilized for guidance and control functions, as one example. The new design will be debuted at Augmented World Expo Europe (AWE) in Berlin at Booth B25, October 18th – 19th.

“Augmented-reality” and “wearables” have become terms we encounter almost daily. Both can make daily life a little simpler and provide valuable assistance for...

Im Focus: Artificial Intelligence Helps in the Discovery of New Materials

With the help of artificial intelligence, chemists from the University of Basel in Switzerland have computed the characteristics of about two million crystals made up of four chemical elements. The researchers were able to identify 90 previously unknown thermodynamically stable crystals that can be regarded as new materials. They report on their findings in the scientific journal Physical Review Letters.

Elpasolite is a glassy, transparent, shiny and soft mineral with a cubic crystal structure. First discovered in El Paso County (Colorado, USA), it can also be...

Im Focus: Complex hardmetal tools out of the 3D printer

For the first time, Fraunhofer IKTS shows additively manufactured hardmetal tools at WorldPM 2016 in Hamburg. Mechanical, chemical as well as a high heat resistance and extreme hardness are required from tools that are used in mechanical and automotive engineering or in plastics and building materials industry. Researchers at the Fraunhofer Institute for Ceramic Technologies and Systems IKTS in Dresden managed the production of complex hardmetal tools via 3D printing in a quality that are in no way inferior to conventionally produced high-performance tools.

Fraunhofer IKTS counts decades of proven expertise in the development of hardmetals. To date, reliable cutting, drilling, pressing and stamping tools made of...

Im Focus: Launch of New Industry Working Group for Process Control in Laser Material Processing

At AKL’16, the International Laser Technology Congress held in May this year, interest in the topic of process control was greater than expected. Appropriately, the event was also used to launch the Industry Working Group for Process Control in Laser Material Processing. The group provides a forum for representatives from industry and research to initiate pre-competitive projects and discuss issues such as standards, potential cost savings and feasibility.

In the age of industry 4.0, laser technology is firmly established within manufacturing. A wide variety of laser techniques – from USP ablation and additive...

Im Focus: New laser joining technologies at ‘K 2016’ trade fair

Every three years, the plastics industry gathers at K, the international trade fair for plastics and rubber in Düsseldorf. The Fraunhofer Institute for Laser Technology ILT will also be attending again and presenting many innovative technologies, such as for joining plastics and metals using ultrashort pulse lasers. From October 19 to 26, you can find the Fraunhofer ILT at the joint Fraunhofer booth SC01 in Hall 7.

K is the world’s largest trade fair for the plastics and rubber industry. As in previous years, the organizers are expecting 3,000 exhibitors and more than...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Experts from industry and academia discuss the future mobile telecommunications standard 5G

23.09.2016 | Event News

ICPE in Graz for the seventh time

20.09.2016 | Event News

Using mathematical models to understand our brain

16.09.2016 | Event News

 
Latest News

Chains of nanogold – forged with atomic precision

23.09.2016 | Life Sciences

New leukemia treatment offers hope

23.09.2016 | Health and Medicine

Self-assembled nanostructures hit their target

23.09.2016 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>