Navigation Links
Promising fire retardant results when clay nanofiller has space
Date:7/7/2011

If materials scientists accompanied their research with theme songs, a team from the National Institute of Standards and Technology (NIST) and the University of Maryland (UMD) might be tempted to choose the garage punk song "Don't Crowd Me"* as the anthem for the promising, but still experimental nanocomposite fire retardants they are studying.

That's because the collaborators have demonstrated that the more widely and uniformly dispersed nanoscale plates of clay are in a polymer, the more fire protection the nanocomposite material provides.

Writing in the journal Polymer,** the team reports that in tests of five specimenseach with the same amount of the nanoscale filler (5 percent by weight)the sample with the most widely dispersed clay plates was far more resistant to igniting and burning than the specimen in which the plates mostly clustered in crowds. In fact, when the two were exposed to the same amount of heat for the same length of time, the sample with the best clay dispersion degraded far more slowly. Additionally, its reduction in mass was about a third less.

In the NIST/UMD experiments, the material of interest was a polymera type of polystyrene, used in packaging, insulation, plastic cutlery and many other productsimbued with nanometer scale plates of montmorillonite, a type of clay with a sandwich-like molecular structure. The combination can create a material with unique properties or properties superior to those achievable by each componentclay or polymeron its own.

Polymer-montmorillonite nanocomposites have attracted much research and commercial interest over the last decade or so. Studies have suggested that how the clay plates disperse, stack or clump in polymers dictates the properties of the resultant material. However, the evidenceespecially when it comes to the flammability properties of the nanocompositeshas been somewhat muddy.

Led by NIST guest researcher Takashi Kashiwagi, the NIST-UMD team subjected their clay-dispersion-varying samples to an exhaustive battery of characterization methods and flammability tests. Affording views from the nanoscopic to the microscopic, the array of measurements and flammability tests yielded a complete picture of how the nanoscale clay plates dispersed in the polymer and how the resultant material responded when exposed to an influx of heat.

The researchers found that with better dispersion, clay plates entangle more easily when exposed to heat, thereby forming a network structure that is less likely to crack and leading to fewer gaps in the material. The result, they say, is a heat shield that slows the rate of degradation and reduces flammability. The NIST team, led by Rick Davis, is now exploring other approaches to reduce flammability, including the use of advanced materials and novel coating techniques.


'/>"/>

Contact: Mark Bello
mark.bello@nist.gov
301-975-3776
National Institute of Standards and Technology (NIST)
Source:Eurekalert

Related biology technology :

1. Amylin Pharmaceuticals to Present Promising New Data on the Companys Diabetes Programs at ADA 2011
2. 22 of Americas Most Promising Scientists Selected as 2011 Pew Scholars in the Biomedical Sciences
3. Jennerex and Partners Present Positive JX-594 Randomized Phase 2 Clinical Data Showing Promising Survival Benefit in Patients with Advanced Liver Cancer
4. Ontario Institute for Cancer Research Announces Spin Off Companies Developing Promising Anticancer Technologies
5. Reportlinker Adds Pipeline Insight: Cancer Overview- Breast and Gynecological Cancers - Promising agents emerge for BRCA positive patients
6. Early Safety Results Promising for Phase I/II Trial of Gene Therapy Treatment of Hemophilia B
7. New findings promising for transformation optics, cloaking
8. New hydrolysis model promising tool in cellulosic biofuel studies
9. Brown chemists report promising advance in fuel-cell technology
10. New atherosclerosis vaccine gives promising results
11. 3 Tufts engineering faculty earn prestigious national awards for promising research
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/11/2017)... Austin, TX (PRWEB) , ... October 11, 2017 ... ... in August compared the implantation and pregnancy rates in frozen and fresh ... the contribution of progesterone and maternal age to IVF success. , After comparing ...
(Date:10/10/2017)... ... October 10, 2017 , ... ... antibody-drug conjugate (ADC) therapeutics, today confirmed licensing rights that give it exclusive ... a technology developed in collaboration with Children’s Hospital Los Angeles (CHLA). ...
(Date:10/10/2017)... DALLAS , Oct. 10, 2017 International research firm ... IoT Strategy, will speak at the TMA 2017 Annual Meeting , ... key trends in the residential home security market and how smart safety ... ... "The ...
(Date:10/10/2017)... ... October 10, 2017 , ... The ... prestigious awards honoring scientists who have made outstanding contributions to analytical ... during Pittcon 2018, the world’s leading conference and exposition for laboratory science, which ...
Breaking Biology Technology:
(Date:4/11/2017)... 11, 2017 Crossmatch®, a globally-recognized leader ... today announced that it has been awarded a ... Activity (IARPA) to develop next-generation Presentation Attack Detection ... "Innovation has been a driving force within Crossmatch ... allow us to innovate and develop new technologies ...
(Date:4/11/2017)... MELBOURNE, Florida , April 11, 2017 ... "Company"), a security technology company, announces the appointment of independent ... John Bendheim to its Board of Directors, furthering the ... ... behalf of NXT-ID, we look forward to their guidance and ...
(Date:4/5/2017)... -- Today HYPR Corp. , leading innovator in ... the HYPR platform is officially FIDO® Certified . ... that empowers biometric authentication across Fortune 500 enterprises and ... 15 million users across the financial services industry, however ... suites and physical access represent a growing portion of ...
Breaking Biology News(10 mins):